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MTH500 TETRA Portable Radio R1:380-400 MHz (PT811F) Detailed Service Manual Part Number: 6802963C70 @6802963C70@ Printed on recycled paper. Environmentally friendly cover and spiral bound. European Publications Department . 68P02963C70-O, Issued: 05.02.

MTH500_DSM 380-430

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MTH500

TETRA Portable RadioR1:380-400 MHz (PT811F)

Detailed Service Manual

Part Number: 6802963C70

@6802963C70@

Printed on recycled paper. Environmentally friendly cover and spiral bound. European Publications Department .68P02963C70-O, Issued: 05.02.

ii 68P02963C70-O

Scope of this Manual

This manual contains information necessary to identify andtroubleshoot the MTH500 Portable radio at the componentlevel. It also contains information on radio assembling, dis-assembling, and maintenance. Accordingly, information inthis manual is divided into four sections:

• Overview

• Theory of Operation

• Troubleshooting

• Radio Programming

• Maintenance

Manual RevisionsChanges which occur after this manual is printed are described in Manual Revisions. These Manual Revisions provide complete information on changes including pertinent parts listing data.

Related Publications• 68P02963C30-O MTH500 User Guide

• 68P02963C65-O MTH500 Basic Service Manual

• 68P02956C20-F CPS User’s Guide

• IFR-Operational Manual Supplement 46882-324

• IFR-Operational Manual 46882-274T

Computer Software CopyrightsThe Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty free license to use that arises by operation of law in the sale of a product.

TrademarksMOTOROLA and the Stylized M Logo are registered in the U.S.Patent and Trademark Office. All other product or service names are the property of their respective owners.

© Motorola, Inc. 2001

Safety And General InformationImportant Information on Safe and Efficient

OperationRead this Information before Using your

handsetThe information provided in this document supersedes the general safety information contained in service manuals published prior to June 2001. For information regarding handset use in a hazardous atmosphere please refer to the Factory Mutual (FM) Approval Manual Supplement or Instruction Card which is included with handset models that offer this capability.

Radio Frequency (RF) Operational CharacteristicsYour handset contains a radio frequency transmitter to convey the information you wish to send as well as occasional automatic signals used to sustain connection with the wireless network, and a receiver which enables you to receive communication and connection information from the network.

Handset Operation And EME ExposureYour Motorola handset is designed to comply with the following national and international standards and guidelines regarding exposure of human beings to radio frequency electromagnetic energy:

• United States Federal Communications Commission, Code of Federal Regulations; 47 CFR part 2 sub-part J

• American National Standards Institute (ANSI) / Institute of Electrical and Electronic Engineers (IEEE) C95. 1-1992

• Institute of Electrical and Electronic Engineers (IEEE) C95.1-1999 Edition

• National Council on Radiation Protection and Measurements (NCRP) of the United States, Report 86, 1986

• International Commission on Non-Ionizing Radiation Protection (ICNIRP) 1998

• Ministry of Health (Canada) Safety Code 6. Limits of Human Exposure to Radiofrequency Electromagnetic Fields in the Frequency Range from 3 kHz to 300 GHz, 1999

68P02963C70-O iii

• Australian Communications Authority Radiocom-munications (Electromagnetic Radiation – Human Exposure) Standard 1999 (applicable to wireless phones only)

• Anatel, Brasil Regulatory Authority“This equipment is in compliance with the limits of Specific Absorption Rate which refer to the exposal to electric, magnetic and electromagnetic fields adopted by ANATEL.”

To assure optimal handset performance and make sure human exposure to radio frequency electromagnetic energy is within the guidelines set forth in the above standards, always adhere to the following procedures:

Phone OperationWhen placing or receiving a phone call, hold your handset as you would a wireline telephone. Speak directly into the microphone.

Two-way radio OperationWhen using your handset, hold the handset in a vertical position with the microphone 2.5 to 5 cm away from your mouth.

Body-worn OperationTo maintain compliance with these RF exposure guidelines, if you wear a handset on your body when transmitting, always place the handset in a Motorola approved belt clip or leather case for this product. Use of non-Motorola-approved accessories may exceed these RF exposure guidelines. If you do not use a Motorola approved body-worn accessory and are not using the handset in the intended use positions along side of the head in the phone mode or in front of the face in the two-way radio mode, then ensure the antenna and handset is kept the following minimum distances from the body when transmitting:

• Phone or Two-way radio mode: 2.5 cm

• Data operation using any data feature with orwithout an accessory cable: 2.5 cm

Antenna CareUse only the supplied or an approved replacement antenna. Unauthorized antennas, modifications, or attachments could damage the handset and may violate FCC regulations.

DO NOT hold the antenna when the radio is “IN USE”. Holding the antenna affects call quality and may cause the radio to operate at a higher power level than needed.

Approved AccessoriesFor a list of Approved Motorola accessories, please see “REPLACEMENT PARTS AND KITS” on page 45.

Electromagnetic Interference/CompatibilityNOTE: Nearly every electronic device is susceptible to electromagnetic interference (EMI) if inadequately shielded, designed or otherwise configured for electromagnetic compatibility.

FacilitiesTo avoid electromagnetic interference and/or compatibility conflicts, turn off your handset in any facility where posted notices instruct you to do so. Hospitals or health care facilities may be using equipment that is sensitive to external RF energy.

AircraftWhen instructed to do so, turn off your handset when on board an aircraft. Any use of a handset must be in accordance with applicable regulations per airline crew instructions.

Medical Devices

PacemakersThe Health Industry Manufacturers Association recommends that a minimum separation of 15 centimetres be maintained between a handheld wireless handset and a pacemaker. These recommendations are consistent with those of the U.S Food and Drug Administration.Persons with pacemakers should:• ALWAYS keep the handset more than 15 centi-

metres from their pacemaker when the handset is turned ON.

• not carry the handset in the breast pocket.• use the ear opposite the pacemaker to minimise

the potential for interference.• turn the handset OFF immediately if you have

any reason to suspect that interference is taking place.

Hearing AidsSome digital wireless handsets may interfere with some hearing aids. In the event of such interference, you may want to consult your hearing aid manufacturer to discuss alternatives.

Other Medical DevicesIf you use any other personal medical device, consult the manufacturer of your device to determine if it is adequately shielded from RF energy. Your physician may be able to assist you in obtaining this information.

iv 68P02963C70-O

Safety and General

Use While DrivingCheck the laws and regulations on the use of radios in the area where you drive. Always obey them. When using the handset while driving, please:• Give full attention to driving and to the road.• Use hands-free operation, if available.• Pull off the road and park before making or answering a

call if driving conditions so require.

Operational Warnings

For Vehicles Equipped with an Air BagDo Not place a handset or install a Vehicular Adapter in the area over an air bag or in the air bag deployment area. Air bags inflate with great force. If a radio is placed in the air bag deployment area and the air bag inflates, the radio may be propelled with great force and cause serious injury to occupants of the vehicle.

Potentially Explosive AtmospheresTurn off your handset prior to entering any area with a potentially explosive atmosphere, unless it is a handset type especially qualified for use in such areas as “Intrinsically Safe” (for example, Factory Mutual, CSA, UL, or CENELEC Approved). Do not remove, install, or charge batteries in such areas. Sparks in a potentially explosive atmosphere can cause an explosion or fire resulting in bodily injury or even death.NOTE: The areas with potentially explosive atmos-

pheres referred to above include fuelling areas such as below decks on boats, fuel or chemical transfer or storage facilities, areas where the air contains chemicals or particles such as grain, dust, or metal powders, and any other area where you would normally be advised to turn off your vehicle engine. Areas with potentially explosive atmospheres are often, but not always, posted.

Blasting Caps and AreasTo avoid possible interference with blasting operations, turn off your handset when you are near electrical blasting caps, in a blasting area, or in areas posted: “Turn off two-way radio.” Obey all signs and instructions.

!W A R N I N G

!

Operational Cautions

AntennasDo not use any handset that has a damaged antenna. If a damaged antenna comes into contact with your skin, a minor burn can result.

BatteriesAll batteries can cause property damage and/or bodily injury such as burns if a conductive material such as jewellery, keys, or beaded chains touch exposed terminals. The conductive material may complete an electrical circuit (short circuit) and become quite hot. Exercise care in handling any charged battery, particularly when placing it inside a pocket, purse, or other container with metal objects.

European Union Directives Conformance Statement

This product is in conformance with the TETRA (TErrestrial Trunked RAdio) standard.This product is in conformance with the requirements of the applicable EU Council Directives.Declarations of Conformance with the requirements are located at:Motorola a/sMidtager 20DK-2605 Brondby

!C a u t i o n

Contents

68P02963C70-O v

MTH500 Portable Radio Model Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

MTH500 Model Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii

MTH500 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Digital Modulation Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Voice Compression Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Transceiver Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Digital Section Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Transmitter Path Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Receiver Path Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Frequency Generating Section Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Section Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Block Diagram Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Receiver Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Transmitter Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Digital Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Frequency Generating Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Block Diagrams Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5Receiver Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5Transmitter Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6Digital Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7Frequency Generating Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Main Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9RX Second Local Oscillator (LO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9Offset VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Detailed Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10Receiver Path, Detailed Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Antenna Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11Front Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11LNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11Second Pre-selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11Attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Contents

vi 68P02963C70-O

Mixer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11IF Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12BALUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12WPIC (receiver section) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Transmitter Path, Detailed Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13Forward Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

WPIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13LO LINE-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14LNODCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14BALUN - FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14RF Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15Coupler and Feedback Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15Isolator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15Antenna Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15Harmonic Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Digital Section, Detailed Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17Host Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Flash Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17SRAM Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Serial Peripheral Interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18DC Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

V1 Linear Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20V2 Linear Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20V3 Linear Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20V4 Linear Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20Switcher #1 (Synchronous Buck Mode Converter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20Switcher #2 (Boost Mode Converter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21DSC Linear Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21TS_REF Linear Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21VREF1 Linear Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21VREF2 Linear Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21Current Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

RS232, SB9600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23Battery ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23Radio Audio System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

Tx Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23Rx Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

Frequency Generating Section Detailed Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25REF. Oscillator - TCXO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26Main VCO and Main Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26WPIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26LMX - Dual Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27Second LO VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27Offset VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

Display and Keypad Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28Backlight and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

Backlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29Top LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

Radio Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29Accessory Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

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Mode Select (OPTION1 and OPTION2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2DMO Troubleshooting Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2TMO Troubleshooting Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Digital Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Digital Analysis Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Digital Analysis Test (Cont.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Digital Analysis Test (Cont.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5Digital Analysis Test (Cont.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6DC Distribution (V2_2.775V) Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7DC Distribution (V2_2.775V) Test (Cont.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8DC Distribution (V2_2.775V) Test (Cont.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9DC Distribution (V2_2.775V) Test (Cont.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10DC Distribution (SWB+) Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11DC Distribution (V4_2.775V) Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12DC Distribution (V3_2.775V/PWM2_1.8V) Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13DC Distribution (V5_RF/PWM1/VSIMI _5.6V) Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Transmitter Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15Standby Current Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15Open Loop Power Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16Open Loop Power Test (Cont.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17Open Loop Power Test (Cont.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18WPIC Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19Closed Loop Power Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20Transmitter Current Consumption Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

Receiver Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22Synthesizer Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23Synthesizer Troubleshooting (Cont.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24

Second LO VCO Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25Offset VCO Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26

Audio Troubleshooting (External Mic to External Out) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27

Programming the Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Programming The Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Codeplug Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Application Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Safe Handling of CMOS Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Disassembling and Reassembling the MTH500 Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Protecting Static-Sensitive Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

To create a proper ground: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3To store or transport a circuit board: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

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Removing and Installing the Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4To remove the antenna from the unit: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4To install the antenna in the unit: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Removing and Installing Battery Door and Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4To remove the battery door from the unit: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4To remove the battery: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5To install the battery: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6To install the battery door: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Removing and Installing the Back Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6Removing the back housing from the unit: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6Installing the back housing: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Removing and Installing the Vibrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7Removing the vibrator: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8Installing the vibrator: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Removing and Installing the Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9Removing the main board from the unit: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9Installing the main board: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Removing and Installing the Keypad and LCD Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10Removing the keypad and LCD boards from the unit: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10Installing the keypad and LCD boards: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Removing and Installing the LCD Module Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12To remove the LCD module assembly from the unit: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12To install the LCD module assembly: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Removing and Installing the Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14Removing the keypad: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14Installing the keypad: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Removing and Installing the Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15Removing the microphone: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15Installing the microphone: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Removing and Installing the Earphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15Removing the earphone: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15Installing the earphone: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15MTH500 Components List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

Component Board Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Schematic Diagrams and Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Appendix 1 Replacement Parts and Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-1Ordering Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-1

Level 3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-1EMEA Region . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-1Latin America Region . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-2

Contents

68P02963C70-O ix

Appendix 2 Test Equipment, Service Aids &Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A2-1

Appendix 3 Self Check Error/Fail Code Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A3-1General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A3-1

Self Check Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A3-1

Appendix 4 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A4-1

Contents

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Foreword

68P02963C70-O xi

MTH500 Portable Radio Model Information

This manual applies to the following MTH500, 1W, Hand-Held Portable Radio Models:

Black H39PCN6TZ5AZ, 380-400MHz

Blue H39PCN6TZ5AR, 380-400MHz

Typical Model Numbering: M 1 2 P C N 6 T Z 5 A Z Position:

MODEL NUMBERING SYSTEM

2 31 4 5 7 109 11 1286

Position 1 - Type of UnitH = Hand-Held PortableM = Mobile Product

Positions 2 and 3 - Model Series

02=Motorola Digital Communicator06=Motorola Advanced Feature Digital07=Motorola i370 Products08=Motorola i1000 Products12=Motorola 3:1 Mobile13=Motorola Ruggedized Digital39=Motorola MTH500 Family

Position 4 - Frequency Band

P=380 to 400 MHzQ=410 to 430 MHz*Values given represent range only; they are not absolute.

Position 5 - Power Level

A=0 to 0.7 WattsB=0.7 to 0.9 WattsC=1.0 to 3.9 WattsD=4.0 to 5.0 WattsE=5.1 to 6.0 WattsF=6.1 to 10.0 Watts

Position 6 - Physical Packages

F=Limited Keypad - With DisplayH=Full Keypad - With DisplayK= Limited Controls - Basic DisplayN=Enhanced Controls - Enhanced Display

Position 7 - Channel Spacing

1=5 kHz2=6.25 kHz3=10 kHz4=12.5 kHz

5=15 kHz6=25 kHz7=30 kHz

Position 12 - UniqueModel VariationsN=Standard PackageR=Blue HousingZ=Black Housing

Position 11 - VersionVersion Letter (Alpha) -Major ChangeVersion Letter (Beta)Major Change

Position 10 - Feature Level1=Basic2=Limited Pkg3=Limited Plus4=Intermediate5=Standard Pkg

6=Standard Plus7=Expanded Pkg8=Expanded Plus9=Full Feature/ Programmable

Position 9 - Primary System TypeR=iDEN BasicS= iDen AFUZ= Dimetra

Position 8 - Primary OperationN=Digital FrontQ=Low Profile -Basic DisplayR=Digital Multi-ServiceT=TDMA Digital Dual Mode

Foreword

xii 68P02963C70-O

MTH500 Model Specifications

Specifications subject to change without notice.

GENERAL RECEIVER TRANSMITTERETSI ETS 300 394-1 Receiver Type: Class A and B Modulation Type: ���DQPSK

Type Number: Frequency Range: R1:380-400 MHz

Temperature Range for Transceiver: Channel Spacing: 25 kHz RF Power

Operating: -20°C to +60°C Sensitivity (4%) BER: -112 dBm

Storage: -40°C to +85°C Intermodulation:Interfering Signal Level:

(4%) BER-47 dBm

Frequency Range: R1: 380-400 MHz

Selectivity Blocking:(50-100 kHz)Interfering Signal Level:

(4%) BER

-40 dBm

Frequency Stability: Locked to Base Not Locked to Base

± 100 Hz± 2 ppm

Battery Types:Standard SNN5705B 800mAH (LiIon),Standard SNN5705C 800mAH (LiIon),

High Capacity SNN5706A 1100mAH (LiIon)

Spurious Rejection:Interfering Signal Level:

(4%) BER

-45 dBm

Spurious Emissions Conducted30MHz-1GHz1GHz-4GHz Radiated30MHz-1GHz1GHz-4GHz

-36dBm-30dBm

-36dBm-30dBm

Frequency Stability: Locked to Base Not Locked to Base

± 100 Hz± 2 ppm

Adjacent Channel Power (at± 25kHz) – 60 dB

Battery Voltage: Audio Rated: 0.5 W

Minimum: 3.4 Vdc Distortion at Rated Audio: 5% Max.

Nominal: 3.8 Vdc

Portable Dimensions HxWxD in MMs: 140x55x31 mm

Weight:<155gr, without battery

R1:380-400 MHz: PT811F

1Watt

Foreword

68P02963C70-O xiii

MTH500 Accessories

Kit Number MTH500 Model Description

Batteries

FTN6030A Extended battery, 1100mAh, LiIon, Black (with battery door)

FTN6037A Extended battery, 1100mAh, LiIon, Blue (with battery door)

FTN6031A Standard battery, 800mAh, LiIon, Black (with battery door)

FTN6038A Standard battery, 800mAh, LiIon, Blue (with battery door)

Chargers

FLN9468A Dual Pocket Desktop Charger

SPN4716B Travel charger

SYN7455A Plug Adapter UK for travel Charger

SYN7456A Plug Adapter EU for travel Charger

FLN9469A Vehicular battery charger

Vehicular Adapters

FLN2850A Car Kit

FLN9569A Stand alone car cradle

Audio accessories

WADN4184A Headset with Boom mic and in line PTT

FLN9470A Headset with Boom mic (On Hold)

FLN9568A PHF

Carrying Accessories

FLN9476A Soft leather carry case

FHN6246A Belt clip

Others

Foreword

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68P02963C70-O 1- 1

Overview

General

To achieve a high spectrum efficiency, the MTH500 uses digital modulationtechnology and sophisticated voice-compression algorithm. The voice of the per-son speaking into the microphone is converted into a digital bit stream consistingof zeros (0) and ones (1). This stream is then modulated into a radio-frequency(RF) signal, which is transmitted over the air to another radio. The process iscalled digital modulation.

Digital Modulation Technology

The MTH500 is a 380-400 MHz portable radio that can operate in dispatch andphone mode. This radio can also operate in TMO (Trunked Mode Operation) andDMO (Direct Mode Operation). It uses two digital technologies: �/4DQPSK andTime Division Multiple Access (TDMA).

�/4DQPSK is a modulation technique that transmits information by altering thephase of the radio frequency (RF) signal. Data is converted into complex symbols,which alter the RF signal and transmit the information. When the signal is re-ceived, the change in phase is converted back into symbols and then into the orig-inal data.

The system can accommodate 4-voice channels in the standard 25 kHz channel asused in the two-way radio.

Time Division Multiple Access (TDMA) is used to allocate portions of the RF sig-nal by dividing time into four slots, one for each unit.

Time allocation enables each unit to transmit its voice information without inter-ference from other transmitting units. Transmission from a unit or base station isaccommodated in time-slot lengths of 15 milliseconds and frame lengths of 60milliseconds. The TDMA technique requires sophisticated algorithms and a dig-ital signal processor (DSP) to perform voice compressions/decompressions andRF modulation/demodulation.

Overview

1 - 2 68P02963C70-O

Voice Compression Technology

Voice is converted into a digital bit stream by sampling the voice at high rate andconverting the samples into numbers, which are represented by bits.

Voice compression reduces the number of bits per second while maintaining thevoice at an acceptable quality level. The MTH500 uses a coding technique calledACELP (Algebraic Code Excited Linear Prediction). The compressed voice-databits modulate the RF signal.

Description

Transceiver Description

All the radio circuitry is contained in the Digital/RF Board and the keypad board.The Digital/RF board is divided into the following sections: digital, frequencygenerating, transmitter, and receiver.

Digital Section Description

The digital section includes the Redcap 2 that consists of the Mcore risk machineand the Digital Signal Processor (DSP).

The Mcore is the controller of the Digital/RF Board. It controls the operation ofthe transmitter, receiver, audio, and synthesizer integrated circuits located in theRF section. It communicates with the keypad and display.

The Digital Signal Processor (DSP) which performs modulation and de-modula-tion functions for the radio. It also performs Forward Error Correction and othercorrection algorithms for overcoming channel errors and ACELP speech coding.It carries out linear 16-bit analog to digital conversions, audio filtering, and levelamplification for the microphone audio input and the received audio output.

The power and audio section is based on the GCAP III and includes power sup-plies, 13-bit CODEC, audio routing, microphone and ear piece amplifiers. A audiopower amplifier is used for the loud speaker.

Transmitter Path DescriptionThe transmitter circuitry includes a linear class AB Power Amplifier (PA) for thelinear modulation of the MTH500. It also includes a novel cartesian feedbackloop to enhance its transmitter linearity and reduced splattering power into adja-cent channels.

Overview

68P02963C70-O 1 - 3

The transmitter path consists of a novel cartesian feedback loop that contains theforward and loop feedback paths. The forward path includes the low noise ODCT(Offset Direct Conversion Transmitter), Balun, Attenuator, and Power Amplifier.The loop feedback path includes the directional coupler, attenuator, and LNODCT(Low Noise Offset Direct Conversion Transmitter) ASIC.

The cartesian Feedback output power passes to the antenna through the Isolator,Antenna Switch, and Harmonic Filter.

Receiver Path Description

The receiver path includes the Antenna Switch, SAW, LNA, ceramic filter, mixer,Crystal Filter, and WPIC (World Phone IC). The first IF consists of the CrystalFilter and WPIC ASIC.

Frequency Generating Section Description

The frequency generating section provides description of the following main com-ponents: Fractional-N Synthesizer, REF. oscillator, Main VCO, WPIC ASIC Syn-thesizers, LNODCT ASIC Synthesizer, External Offset and second LOSynthesizer, DSP PLL, and Host PLL.

Overview

1 - 4 68P02963C70-O

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68P02963C70-O 2 - 1

Theory of Operation

Section Introduction

This section provides a block diagram overview of the main Digital/RF Board.This is supplemented by the detailed block diagram and detailed circuit descrip-tion.

Block Diagram Overview

The main Digital/RF Block contains the following four sections (see Figure 1). Anoverview of these four sections is provided in the following paragraphs:

• Receiver Section

• Transmitter Section

• Digital & Audio Section

• Frequency Generating Section (Synthesizer)

Theory of Operation

2 - 2 68P02963C70-O

Figure 1 General Block Diagram

Receiver Section

The receiver section includes the following main components:

• Antenna Switch

• Limiter

• Front Filter

• Low Noise Amplifier (LNA)

• Second Pre-selector

• Attenuator

• Mixer

• IF Filter

• Balun

• WPIC

DigitalBlock

DCBlock

Transmitter

Receiever

Synthesizer

LCD KeyPad

Audio

Battery

Antenna

AntennaSwitch

Main Board

Theory of Operation

68P02963C70-O 2 - 3

The Receiver Path implements an Automatic Gain Control (AGC). It is requiredto maintain a good receiver linearity over a wide range of incoming signals andprevents clipping of high level signals.

The first Intermediate frequency (IF) circuit consists of the Mixer, IF Filter, andWPIC. The second IF consists of an analog IF and a digital mixer that converts tobase band. They are located in the WPIC. The WPIC performs the following func-tions:

• Carries out amplification and quadrature down conversion of the signal intothe second IF.

• Performs IF AGC.

• Converts the second IF analog signal into digital I & Q formats.

• Synthesizes the second VCO frequency.

• Synthesizes the Sigma-Delta clock.

• Synthesizes the receive and data transmit data clock.

• Transmits the received data to the DSP.

Transmitter Section

The transmitter circuitry includes a linear class AB Power Amplifier (PA) for thelinear modulation of the MTH500. It also includes a novel cartesian feedback loopto enhance its transmitter linearity and reduced splattering power into adjacentchannels.

The transmitter path consists of a novel cartesian feedback loop that contains theforward and feedback paths. The forward path includes the low noise ODCT (Off-set Direct Conversion Transmitter), Balun, Attenuator, and Power Amplifier. Theloop feedback path includes the directional coupler, attenuator, and LNODCT(Low Noise Offset Direct Conversion Transmitter) ASIC.

The cartesian Feedback output power passes to the antenna through the Isolator,Antenna Switch, and Harmonic Filter.

Digital Section

This section includes the REDCAP2, which controls the transmit, receive, andsynthesize operations of the integrated circuits located in the RF section. Withinthe REDCAP2 is the DSP and the serial communication interface.

The digital section contains the following:

• REDCAP2

• Power On/Off circuitry

• Serial peripheral interface (SPI)

• Host memories (flash and SRAM)

• Bottom connector signal MUX

• Keypad block and connector

• LCD (liquid-crystal display) circuit and connector

Theory of Operation

2 - 4 68P02963C70-O

Frequency Generating Section

The frequency generating section contains the following components:

• REF. Oscillator - TCXO

• Main Synthesizer - consists of the WPIC’s PLL and the Main Voltage Con-trolled Oscillator (VCO).

• 2nd Local Oscillator (LO) VCO together with the LMX Dual Synthesizer.

• Offset VCO together with the LMX Dual Synthesizer.

Theory of Operation

68P02963C70-O 2 - 5

Block Diagrams Descriptions

The block diagrams descriptions cover Receiver Path, Transmitter Path, Digital Section, andFrequency Generation Section.

Receiver Path

The received signal (see Figure 2) from the antenna is directed by the Antenna Switch to theFront Filter.

Figure 2 Receive Path Block Diagram

This block-type filter, which defines the receive frequency range, blocks the half IF and imagefrequency entry, and reduces the RF oscillator leakage. The signal is mixed with the local os-cillator to create the first IF at 109.65 MHz. The signal is filtered by the crystal filter and sentto the WPIC ASIC.

The WPIC performs down conversion to the second IF at baseband frequency (0 Hz) and con-verts the second IF analog signals into digital-in-phase (I) and Quadrature (Q) formats. This

(DSP)

LCFront FilterIL=2.5dB

WPIC

Theory of Operation

2 - 6 68P02963C70-O

data is sent for further processing to the Digital Signal Processor (DSP) (part ofRedCap2) over the Synchronous Serial Interface (SSI) data links.

The DSP performs: the demodulation, Forward Error Correction (FEC) and othercorrection algorithms for overcoming channel errors, and the GCAP decoder pro-cedure for digital speech data decompression.

Transmitter Path

When the radio is transmitting (see Figure 3), the microphone audio is sent to theGCAP (CODEC). The CODEC performs analog-to-digital conversion and thedigital signal is routed to the DSP. The DSP performs coding, Error Correction andmodulation. From the DSP, the signal is sent to the WPIC+.

Figure 3 Transmit Path Block Diagram

In the WPIC+ data is converted into analog signal. This signal is also filtered.From the WPIC+, the data is injected to the LNODCT. In the LNODCT the datais mixed with RF signal.

From the differential output of the LNODCT the modulated RF signal is injectedto the Balun-Filter, that transforms the differential input into single output, andthen it is routed to the antenna via the Antenna Switch.

The feedback signal is used for power control.

HarmonicFilter

AntennaSwitch

-0.8dB

-1dB4dB

-8dB

-3.5dB 36 - 39dB

RF PABalun-FilterLNODCTWPIC+

REDCAP2

GCAP

IsolatorAttenuator

Attenuator

Power at Antenna:30dBm ± 2dB

Theory of Operation

68P02963C70-O 2 - 7

Digital Mode of Operation

The digital section (see Figure 4) contains the radio's Redcap Risk-processor withits external memory and DSP, including its memory, within. GCAP III includesswitching regulator and linear regulators, audio preamplifiers, CODEC 13-bit, 8-channel 8-bit A/D Converter, Regulators, Audio Amplifier.

The Redcap controls the receive/transmit frequencies, power levels, display, key-pad, accessories, MMI, and other radio functions. This microprocessor can be op-erated through the RS232 interface by a personal computer to program theFLASH.

The codec distribution is supported by the Global Control Audio Power (GCAPIII) IC. This IC supplies power to the radio using step-down PWM regulator sup-plying 1.88 VDC to the Redcap core, V3 linear regulator 2.775VDC to the exter-nal memories, display and Redcap peripheral modules, supplying V2 to the A/Dconverter, GCAP internal logic, and audio amplifier. The regulator's power-downmode is controlled by the redcap, which senses the ON or OFF condition.

The DSP performs signalling, and voice encoding and decoding. The audio filter-ing and volume control, and analog-to-digital and digital-to-analog conversionson audio signals, are performed in the GCAP's Codec.

.

Figure 4 Digital Section Block Diagram

CS2

OE

EB1

CS0

SPI CE WEOE

FLASHU403

DATA ADR

CE UB LB OE

SRAMU402

DATA ADR

Display

AddressBus

Data Bus

REDCAP2U401

Chip Selects

SPI Bus

RFBus

KeypressDetect

ColumnLines (5)Row

Lines (5)

KeypadBoard

Control Bus

To RadioBottomConnector

RS232

161619

RW

WE

EB0

22

Theory of Operation

2 - 8 68P02963C70-O

Frequency Generating Section

The frequency generating section contains the following components(see Figure 5):

• REF. Oscillator - TCXO

• Main Synthesizer - consists of the WPIC’s PLL and the Main Voltage Con-trolled Oscillator (VCO).

• 2nd Local Oscillator (LO) VCO together with the LMX Dual Synthesizer.

• Offset VCO together with the LMX Dual Synthesizer.

Figure 5 Frequency Generation - Block Diagram

Of fset VCO

Second LO

Dual Synthesizer (U808)

Main VCO

Main Synthesizer

493.65-513.65 MHz to RX Mixer

113.65 MHz to Offset Mixer

493.65-513.65 MHz to TX MixerReferenceOscillator - TCXO

Divider

OSC_IN

DOI F

IF Section

RF Section

DORF219.3MHz

FINIF

FINRF

50kHz

100kH zOSC_IN

WPI CXTALBASE

PRSCI N

CPGITR

Data

LOIN

LPF

LPF

LPF

Osc.

Osc.

Osc.

Buf fer

Theory of Operation

68P02963C70-O 2 - 9

All frequencies originate from the REF. oscillator -TCXO. This is a digital tem-perature compensated crystal oscillator producing an accurate and stable 16.8MHz reference frequency. The 16.8 MHz reference frequency is divided in theWPIC and in the Dual Synthesizer to produce required reference frequency for theother synthesizers.

Main Synthesizer

The Main Synthesizer consists of the WPIC internal PLL modules, and MainVCO on board. It produces the LO signal to down-convert the receive signal to thefirst IF 109.65 MHz frequency and to up-convert the 113.65 MHz transmitter IFfrequency to produce the RF carrier frequency.

RX Second Local Oscillator (LO)

The second LO synthesizer supplies the second IF local oscillator frequency to thereceiver. It produces 219.3 MHz that is divided by two in the WPIC in order todown-convert the received signal to the baseband.

Offset VCO

The Offset VCO consists of the LMX Dual Synthesizer and the VCO on board. Itproduces the output of the offset VCO 113.65 MHz.

Theory of Operation

2 - 10 68P02963C70-O

Detailed Circuit Description

Receiver Path, Detailed Circuit Description

See Figure 6.

Figure 6 Receiver Path Circuit Diagram

Antenna Switch

The signal coming from the antenna is routed to the receiver section via the har-monic filter, which is comprised of L890 and C1012. The signal continues to flowthrough image filter (equivalent quarter wave) transformer C1015 and L817 to theRx section toward limiter diode D500. The antenna switch attenuates the image

(DSP)

BasebandFilters

BasebandAmplifiers

LCFront FilterIL=2.5dB

GCAP

Theory of Operation

68P02963C70-O 2 - 11

frequency by approximately 38dB. The attenuation of wanted signal is typically0.7dB.

Limiter

The limiter (D500) function is to prevent entering of signal with power higher then30dBm, which may damage the receiver front-end.

Front Filter

The signal arrived from the limiter is flowing via the front filter (FL500) and rout-ed to the Low Noise Amplifier (LNA) (U500) via C576.

The front filter is also called -1st pre-selector and is used to attenuate the incomingparasitic RF frequencies, especially the image frequency (25dB). The InsertionLoss (IL) is typically 2dB.

LNA

The LNA module is the RF signal amplifier. The LNA gain (U500) including out-put matching circuit, C1048, L518, C521, R965, L500, C532, R580 and C507, istypically 23dB. Because the LNA is the first amplifier in the line, it is importantthat it will maintain large gain and small Noise Figure - 1.8dB.

The LNA has an “enable” pin (pin 3) which is called VPD. When this pin receivesa supply of 1.8 V from DC switch (Q504) - the amplifier is enabled. From theLNA the signal passes to second pre-selector, LC filter (FL501). The IIP3 of theLNA is between -5dBm to -2.5dBm.

Second Pre-selector

The 2nd Pre-selector (FL501) attenuates the non-linear products of the LNA andalso the image product by 25dB. Its IL is typically 2.5 dB. From the output of theLC filter the received signal is routed via a Pi-attenuator to the Mixer RF input.

Attenuator

The purpose of the resistor Pi-attenuator (R519, R517, R945), is to protect themixer (U504) input from saturation. The pad attenuates RF power by 2.5dB

Mixer

The Mixer (U504) function is to down convert the incoming RF signal into IF sig-nal (109.65 MHz). The Conversion Loss (CL) is typically 6.2dB and its IIP3 istypically 20dBm.

The RF signal enters the Mixer at pin 1, and the IF is produced at pin 6. The LO(from the main VCO) signal passes via the matching circuit (C522, L505, R943

Theory of Operation

2 - 12 68P02963C70-O

and C984), enters the Mixer at pin 3. The LO power at the LO mixer input is -2dBm. The 2.7V DC is supplied by switch Q500 to pin.4.

The mixer conversion Loss is 7dB.

An impedance matching net is placed between the mixer and the IF filter (FL502).It consists of L512, C525, C531, C524, L504 and C539.

IF Filter

The IF signal is routed via the IF filter (FL502), which has IL of 2.5dB and atten-uates parasitic products of the Mixer, and via an impedance matching network thatconsist of C546, C536 and L501 to the BALUN.

BALUN

The Balun transforms the single ended input RF signal to a differential double-ended output. It consists of L519, C526, C527, L520, C530 and C534.

The differential signal is routed to the WPIC (Word Phone IC) at pin A4 and B4.

WPIC (receiver section)

The differential IF signal is amplified and transferred into the WPIC and mixedwith 2nd LO signal. The 2nd LO signal is routed to the WPIC at pin D1 and divid-ed by 2 in to the quadrature generator block of the WPIC. The baseband signalfrom the mixer passes via a Baseband filters and amplifiers arrays that gives lowernoise and better I & Q balance, to the WPIC A/D block and than to the DSP.

An internal AGC that is controlled by a control unit, establishes an appropriate at-tenuation for unwanted signals as well as an appropriate gain for wanted signals.The voltage at external capacitor C557 indicates the AGC attenuation level for thedifferent input signal levels. The voltage at the capacitor varies from 1.4V to 2.7Vas a function of the power of the received signal.

Theory of Operation

68P02963C70-O 2 - 13

Transmitter Path, Detailed Circuit Description

See Figure 7.

Figure 7 Transmit Path Circuit Diagram

Forward Path

WPIC

The WPIC (World Phone IC) U503 receives serial data that is transmitted by theREDCAP2 at a 48 kbps rate to the SSI port (pin K10, STD). Data is transmittedas a 16-bit ‘I’ word followed by a 16-bit ‘Q’ word. The WPIC provides a serialclock of 4.8MHz to the REDCAP2 (pin K11, TXCLK) and sends a frame sync sig-nal (pin L11, RXFS/SFS) at the beginning of every ‘I’ word transmission, to in-struct the REDCAP2 to send data. In the WPIC, the received serial I & Q wordsfrom the REDCAP2 are converted into parallel I & Q words, and transferred to aninterpolating filter. The interpolating filter increases the sampling rate to reducein-band quantization noise, as well as to reduce image at multiples of the input da-ta. The interpolated samples are rounded to 8 bits, and run through the 8-bit D/Aconverters. The D/A converters take the digital I & Q words and convert them intoanalog signals, which are filtered and amplified. The output is comprised of twoseparate low-level differential signals, I & Q (pins A8, OUTQ; C8, OUTQB; D8,OUTI; A9, OUTIB). A differential output is used to minimize the noise pick-up,due to its inherent common mode rejection. The output signals are routed to theLNODCT IC where the transmitting loop is closed. The WPIC sends a 2.4MHz

LNODCT

Balun-Filter

Att.

+30

Att.

0

-3dB

37 ± 2

-5dB

-10dB

I/Q Split

Dr

ImageFilter Att.

-3

Main VCO

Mixer

WPIC(ADDAGpart)

REDCAP2

Power Amp.(FET)

Coupler

Isolator

Ant. Switch+Harm.Filter

OffsetVCO

DualSynthesizer

-0.1dB

Theory of Operation

2 - 14 68P02963C70-O

low-level differential reference clock signal (pins B11, TCLCK; C10, TCLCKB)to the LNODCT. It also sends a differential signal (pins A11, TSLOT; A10,TSLOTB) that marks the beginning and the end of each transmission time slot ofthe REDCAP2 (whenever a TXE signal (pin H8 TXE) is received from theREDCAP2). After receiving the TSLOT signal, the LNOCDT toggles the ASWline (pin J5, ASW) which signals the WPIC to set VCNTO signal LOW (pin J6,VCNTO) which enables the Antenna Switch during transmit time. WPIC starts toreceive data from REDCAP2 after TXE signal (pin H8, TXE).

LO LINE-UP

LO LINE-UP includes MIXER U800, Attenuator (R800, R819, R808), Image Fil-ter FL800, LO Driver Q808, and I - Q Splitter Q801. Offset VCO is based on DualSynthesizer IC U808 that receives data from REDCAP2 that defines Offset VCOparameters. The Offset VCO signal 113.65MHz is mixed with the Main VCO sig-nal (493.65 - 513.65MHz) in the Mixer U800. The output of the Mixer is the RFcarrier frequency. The signal passes through the ��attenuator and image filterFL800. The image filter attenuates the VCO and image frequencies and any out-of-band spurs that may be present. The signal is amplified by LO FET DriverQ808 and routed to I-Q splitter U801 that converts the single input signal into twoquadrature (90 degrees phase shift) ‘I’ and ‘Q’ signals and then routs them to theLNODCT LO input (pins 46, LOQ; 45, LOQB; 57, LOI; 56, LOIB). RF signal issampled at the I-Q splitter input and applied to the LNODCT LO feedback (pin24, MVCO).

LNODCT

The LNODCT (Low Noise Offset Direct Conversion Transmitter) U803 is theheart of the transmitter.

The differential base-band signals from the WPIC are inputted into the LNODCTon pins 58 – 61 (BINQB, BINQ, BINIB and BINI). They pass through a variableattenuator and then they are summed with the down converted I & Q feedback.The base-band signal is then amplified and sent to the up-mixer.

The up-mixer consists of two mixers, one for the I channel and the other for the Qchannel. The split I & Q LO signal is mixed with the base-band I & Q signals toproduce an I and Q modulated signals at RF frequency. The signal is then outputdifferentially on pins 51 and 52 (RFOUTB, RFOUT).

BALUN - FILTER

The differential RF signal is converted to a single-ended (unbalanced) signal bypassing the BALUN-Filter FL801 (balanced-unbalanced filter). The BALUN-Fil-ter has a 200 Ohm input and 50 Ohm single-ended output, the BALUN-Filter out-put voltage amplitude is two times higher than the differential voltagesamplitudes. Thus the LNODCT output signal is increased by 6dB in compare toeach of the differential signals.

Theory of Operation

68P02963C70-O 2 - 15

Another function of the BALUN-Filter is to attenuate the image frequencies andother unwanted out-of-band spurs present in the output signal. The insertion lossof the BALUN-Filter is 3dB. The output signal from the BALUN-Filter is appliedto the RF PA through -1.8dB attenuator (R836, R833, R834).

RF Power AmplifierThe signal is then routed through DC coupling capacitor C823 to the RF PowerAmplifier (PA). The PA IC consist of two amplifying stages. The PA output ismatched with 50 Ohm coupler by the ��LC-circuit (C1028, C1029, L921). LCnotch filter (L923, C1030) rejects the second harmonic of the RF signal. The PAgain is set by PA_BIAS voltage from the REDCAP2, L1T 3 (pin C6, TOUT3).The bias voltage is applied to the dual-transistor switch Q807, Q911 and then toPA (pins 8,VREG; 16, VBIAS respectively).

Coupler and Feedback PathA coupler U806 exists at the RF PA output, it is used to pass the signal to IsolatorFL801 and sample the signal thus providing the necessary feedback for the line-arization and feedback correction. The sampled signal is routed via attenuatorR815, R818, R825 to the LNODCT (pin 37, RFIN). The feedback signal is thenmixed down to base-band in a quadrature down mixer, amplified and summedwith the base-band input signal. The loop is closed.

Isolator

The signal in the forward path is fed to pin 2 of the isolator (FL801). The isolatoris placed at the PA output to decrease the influence of the antenna impedance var-iation on the PA performance. The reflected power returned from the antenna, isabsorbed in a 50 Ohms resistor inside the isolator. The isolator also protects theCartesian loop from sudden VSWR variations that could lead to loop instability.

Antenna Switch

The RF signal from the Isolator is applied to the PIN DIODES U802. The PIN di-odes are turned on during the transmission time slot, and the DC current flowsthrough the Isolator to the ground. The RF signal is routed through 2 �-LC-cir-cuits (C848/L818/C838 and C1010/L817/C852) and the Harmonic Filter to theAntenna. L817/C1015 circuit provides the image rejection of the output RF signal.In the Receiving mode the PIN diodes are turned off, the input RF signal is direct-ed to the receiver path via p/4 LC equivalent circuit (C1010/L817/C852). The con-dition of the PIN diodes is controlled by the voltage switch Q806 by applying theANT_EN signal to the switch. The resistor R832 determines the DC currentthrough PIN diodes; diode D801 provides the additional capacitance during theTransmission mode, capacitors C835 and C832 compensate the parasitic induct-ance of the D801. The VCNTO signal applied to the voltage switch Q806 is setLOW during the Receiving and Transmission modes.

The RF output signal is disabled during the CLCH (Training) mode by setting theVCNTO signal HIGH thus providing the low output power during the trainingslot.

Theory of Operation

2 - 16 68P02963C70-O

Harmonic Filter

From the antenna switch the signal is routed to a one section of LC filter, consist-ing of the coil L890 and capacitors C1010, C1011 and C1012. The filter is re-quired to attenuate the harmonics of the amplifying stages at the transmissionpath, and the Local Oscillator leakage at the receiver path.

Theory of Operation

68P02963C70-O 2 - 17

Digital Section, Detailed Circuit Description

See Figure 8.

Figure 8 Digital Section - Detailed Circuit Diagram

Host Memories

The RedCap2 Address bus is a 22-bit wide (0:21) and RedCap2 Data Bus is a 16-bit wide (0:15).

RedCap2 uses two types of memories:

Flash Memory

The Flash Memory is dedicated to the application software. This memory has a16-bit wide data bus. The Flash memory location has a 32M Bit of memory; Whenaddressing the Flash memory location, the processor reads into its 16-bit wide databus.

RF Section

GCAP3

CE Accessory Conn.

Keypad

Vibracall

Power Supplies

Radio Off

ES

SI

UA

RT

OP

TS

EL

ESSISPIBReset

OPT B+

USB/8-RS232

USB_PWR

BAT_FDBK

Ext Audio

ON3

Control

BBP

SPIA

REDCAP2

4 MB flashmemory1MB SRAM

Graphic Display

SPIB

Theory of Operation

2 - 18 68P02963C70-O

The Flash also stores the Radio CodePlug (Customer related information) such astelephone numbers, addresses, etc.

SRAM Memory

This 512 x 16 Static Ram is used for Data storage.

Serial Peripheral Interface (SPI)

The RedCap2 uses the SPI protocol (Serial Peripheral Interface) to communicatewith RF IC's (WPIC, ODCT, Synthesizer/LMX), GCAP3 IC and the display driv-er.

The RF IC's are connected to SPIA module, while GCAP3 and the display areconnected via SPIB module.

The protocol is built upon 4 lines [MOSI(Tx), MISO(Rx), CS, CLK)].

The Display Module, based on the display driver (i.e. Samsung KS0741) uses aserial interface.

Figure 9 is a block diagram of the RedCap2 and its interfaces.

Theory of Operation

68P02963C70-O 2 - 19

Figure 9 REDCAP2 Block Diagram

Encr yptionAccelerator

DSP Peripheral DMA

PR OM 2Kx24

PRAM 40Kx24

YROM 0Kx16

YRAM 15Kx16

DSPCore

ViterbiAcceler ator

MCU/DSPInterface

MDI

XROM 0Kx16

XRAM 12Kx16

Shared X/VIA CRAM 2Kx16

Shared X/MCURAM 2Kx16

Clocks/PLL

MCU Debug

Layer 1Timer

JTAG/OnCE

UARTB

MUX

UARTA

AudioCODECSer ial PortSAP

BRM

ExternalIntefaceModule

QSPIB

QSPIA

SIM

Reset

KeypadInterface

GPIO

MCUCore

ROM 4Kx32

RAM 512x32

PIGPeripher al I/F

Gask et

GPReg

MCU Timers/PWM/PIT/Watchdog

BasebandCODECSer ial P ortBBP

Counter

DSP Timer

MC

U I

nt. C

t l

DSP_IRQSTDB

SRDBSFSB(2)

SCKB(2)

STD ASRD A

SFSA(2)

SCKA(2)

ADRS(22)

DATA(16 )R/WOE

EB0,EB1CS(6)MOD

INT(6)INT6/DSRA/STD A/TRST

INT7/DTRA/SCLK/SRD A/TMS

MOSIBMISOBQSCKB

SPICSB(5)

MOSIAMISO A

QSCKASPICSA(5)

RST_OUTRST_IN

COLUMN(5)ROW(5)

COLUMN5/GPIOROW5/IC2B/GPIO

COLUMN6/OC1COLUMN7/PWM

ROW6/DCDA/SC2A/DSP_DEROW7/RIA/ISCKA//TCK

XYA(16)

XYRW,XYSEL,XYSTB

XYD(16)/TXA/RXA/GI

CKIH,CKILCKOH,CKO

DEBUG(6)

TOUT(16)

DSP_DEJTAG(5)MCU_DETESTRTSBCTSBTXBRXB

MUX_CTLRTSA/IC2A/RESET_INCTSA/MCU_DE

TXA/TDO

RXA/IC1/TDI

Theory of Operation

2 - 20 68P02963C70-O

DC Power Distribution

(See Figure 10).

V1 Linear Regulator

V1 is a programmable linear regulator. It is programmed using the Redcap SPI busfrom 0.975V to 3.0V in 8 steps. This regulator is active during Power Reset (POR)and its initial value is 0.95V. For this radio, V1 (programmed to 1.875V) is thesupply for the vibrator motor. This regulator is active whenever the radio is turnedON.

V2 Linear Regulator

V2 is a selectable linear regulator. It is selectable using the GCAP UV_SEL pinbetween either 2.5V and 2.775V. This regulator is active during POR and its initialoutput value is set by GCAP3 UV_SEL pin. Connecting UV_SEL pin to B+ setsV2 output value to 2.775V, connecting UV_SEL pin to Ground sets V2 output val-ue to 2.5V. For this radio, V2 is selected to 2.775V. This regulator is supplied byB+ and it is active whenever the radio is turned ON. V2 is the supply for internaland external audio circuits, CLK_IN input driver and TS interface.

V3 Linear Regulator

V3 is a selectable linear regulator. It is selectable using the Redcap SPI bus from1.875V to 2.775V in 4 steps. This regulator is active during POR and its initial out-put value is 2.775V. For this radio, V3 is selected to 2.775V. The regulator is sup-plied by B+ and it is active whenever the radio is turned ON. V3 is V3_2.775V,which is the supply for the SRAM, FLASH, Redcap, CE bus and Display.

V4 Linear Regulator

V4 is a selectable linear regulator with external pass transistor. It is selectable us-ing the Redcap SPI bus from 1.875V to 2.775V in 4 steps. It is set to 2.775V. V4is always powered from B+ and it is active whenever the radio is turned ON. Thisregulator is active during POR. V4 is V4_2.775V_RF, which is the supply for theWPIC, ODCT and LMX.

Switcher #1 (Synchronous Buck Mode Converter)

Switcher #1 is a selectable step down switching regulator. It is selectable using theRedcap SPI bus from 1.2V to 2.45V in 6 steps, Pass Through and Power downmodes. The switcher is active during POR in 1.86V mode. It is set to 1.86V.Switching regulator is PWM#1_1.86V, which is the supply for the internal core,emulation port and clock output drivers of the Redcap. The switcher is suppliedfrom B+ and it is active whenever the radio is turned ON.

Theory of Operation

68P02963C70-O 2 - 21

Switcher #2 (Boost Mode Converter)

Switcher #2 is a selectable step up switching regulator. It is selectable using theRedcap SPI bus to 5.6/5.0/3.35 Volt and Power down mode. The switcher is sup-plied from B+ and it is active whenever the radio is turned ON. The switcher isinherently in 5.6V mode at POR. The radio uses the switcher at 5.6 V to supply5V_RF and VSIM linear regulators.

DSC Linear Regulator

DSC is a fixed output linear regulator. This regulator is active during POR in the5V mode. DSC is supplied from PWM#2_5.6V, which is used to supply the WPICand ODCT charge pump circuits.

TS_REF Linear Regulator

TS_REF is a fixed output linear regulator. It is supplied internally from the V2 lin-ear regulator. It is set to 2.3V. The radio uses TS_REF for the AD voltage dividers.It is not active at POR.

VREF1 Linear Regulator

VREF1 is a programmable linear regulator. It is programmed using the RedcapSPI bus from 1.875V to 2.775V in 4 steps. This regulator is active during POR andits initial value is 2.775V. For this radio, VREF1 is programmed to 2.775V and isbattery supplied. VREF1 is VREF1_2.775V, which is the supply for TCXO.

VREF2 Linear Regulator

VREF1 is a programmable linear regulator. It is programmed using the Redcap SPI bus from 1.875V to 2.775V in 4 steps. This regulator is active during POR and its initial value is 2.775V. For this radio, VREF2 is programmed to 2.775V and is battery supplied. VREF2 is VREF2_2.775V, which is the supply for the keypad and display backlight circuits. This regulator is On whenever the radio is turned ON.

Current Limit

The SWB+ current limit regulator provides power from the phone battery to clip-on accessories. It is enabled only when the phone is powered up and an accessorywhich requires power from the phone is connected.

Several sections of the radio are connected directly to the battery, which suppliesRaw_B+ and Fused_B+. The radio operates with a low-level battery voltage of3.15Vdc, nominal-level voltage of 3.6Vdc, and high-level voltage of 4.2Vdc. Thebattery is connected to P1 - 4 (+) and P1 - 1 (-). These pins supply the Raw_B+to the RF TX power amplifier. The SWB+ output of the U104 regulator suppliesthe accessories through the bottom connector. Raw_B+ is routed via F600 (Fuse)

Theory of Operation

2 - 22 68P02963C70-O

becoming Fused_B+, which goes via the main FET and provides power to theGCAP III IC.

Figure 10 MTH500 DC Distribution

Bat

tery

Fil

ter

3.6VDC

RF PATetra

Filter

Filter

Filter

PWM2(Boost)5.6V @ 100mA

V32.775V @ 150mA

PWM1(Buck)1.86V @ 100mA

EXT_VSIM13.0V @ 50mA

CurrentLimit800mA

VREF12.775V @ 5 mA

V22.775V @ 200mA

V11.875V @ 150mA

VREF22.775V @ 100mA

V42.775V @ 250mA

VDSC5V @ 60mA

VTS2.3V @ 5mA

VVIB1.3V @ 200mA

VUSB3.3V @ 40mA

ON

ON

ON

OFF

OFF

OFF

ON

0.9V OFF

0.95V OFF

1.875V ON

ON

ONFILT_B+ V4_2.775V_RF

V4_2.775V_RF

FILT_B+

VREF2_2.775V_RF

WPICSFOUT:2.5V, 40mA

MainVCO&BufferOffsetVCO

: 10mA:

7mA

VCO&Buffer2ndLOVCO

: 10mA:

7mA

5V_RF

TETRATX

TETRATX

WPICCP5

Driver&mixer45

TETRARXWPIC: 20LNODCT: 130Mixer:2.5AntSW: 8LO_DRV: 40

TETRA_TX:202TCXO: 2

WPIC: 30Mixer:2.7LNA:7.5

TETRA_RX:62Dedicated: 2.5

VBLIN: 3ODCT CP: 1PA Bias: <1

REDCAPAVDD-AddressBusDVDD-Data BusCVDD-Bus ControlBVDD-SIMEVDD-AudioESSI

HVDD-SPIA/B,BBESSL,L1TLVDD-DSPAddress Bus VisibilityMVDD-DSPData Bus Visibility

FVDD-ClockOutputDriverKVDD-EMULPort

OVCCH-I/Opre driversvoltage

OVCC-Internalcore

GVDD-GPIO,JTAG, DebugSTO, DATA, Bottom

FLASHVCC

SRAM

AUDIO PA

Vibrator

Accessory VCC

Audio Circuits

USB Drivers

BL_SNKGCAP III

V3

SWB+ EN

UV_SEL

USBDETECT

ThermBatt,RF_PA Term,HW_ID

Keypad/DisplayBacklight

Display

R_G_LED

MA

IN-B

OA

RD

KE

YPA

D

LEDR/LEDGGCAP III

LNODCT:Upmixer40mA

TCXO: 2mA

NotUsed

Theory of Operation

68P02963C70-O 2 - 23

RS232, SB9600

The REDCAP processor (RCE) uses the three serial protocols: UART andSB9600 to communicate with external devices via the bottom connector of theunit. There is no external hardware for switching from one protocol to another be-cause the REDCAP2 handles the switching and line multiplexing functions inter-nally.

Battery ID

The battery is equipped with a Dallas 2502 EPROM. A one-wire serial bus allowsthe radio or the battery charger to communicate with the battery and identifywhether or not the battery is compatible. If the battery is determined to be incom-patible, the unit automatically shuts off, and the charger does not enter chargingmode.

Besides compatibility data, the EPROM also stores the following information:battery type, capacity, fuel-gauging parameters, and voltage threshold.

Radio Audio System

See Figure 11.

The audio system consists of the GCAP 3 IC (U600) and the DSP (U401), bothare located on the main board.

The GCAP 3 perform the analog task and part of the digital task of the audio sys-tem.

Tx Path

Audio speech is fed either to the internal microphone, or to a Phone Hands Free(PHF) microphone. The signals reach the GCAP 3 IC. In the GCAP 3 IC, a fix gainamplifier (A3 or A5) provides the signal amplification, the multiplexer (MUX) se-lects the active input, and the programmable Gain Amplifier (TxPGA) adjust thepath gain according to the radio mode of operation. Finally, the A/D converts theanalog signal into digital format and transfers it to the DSP. The DSP performs thefunctions of audio filtering, ACELP speech compression, digital modulation, andtransfers the data to the RF section. When the radio is operating in the telephoneinterconnect mode, the DSP performs the required tasks such as echo and noisereduction.

Rx Path

The digital output signal from the receiver is fed to the DSP which performs thefunctions of digital de-modulation, ACELP speech de-compression, and audio fil-tering. It transfers the data to the GCAP3 IC. In this IC, the D/A converts the dig-ital audio format to an analog signal, the Programmable Gain Amplifier (RxPGA)

Theory of Operation

2 - 24 68P02963C70-O

GCAPIII

adjusts the path gain according to the setting of the volume control, and the mul-tiplexer routes the audio to the active receive path. When the internal speaker isactive, the audio is fed to A2, double-ended audio power amplifier. Otherwise, theaudio is fed to A1, output amplifier, that drives the Internal Earpiece or the PHFearpiece.

Figure 11 Audio Path Block Diagram

Theory of Operation

68P02963C70-O 2 - 25

Frequency Generating Section Detailed Circuit Description

See Figure 12.

This section describes the generating circuits that supply all the required frequen-cies for the required transmitter and receiver functions. These circuits are de-scribed as follows:

• REF. Oscillator - TCXO.

• Main VCO and Main Synthesizer.

• Second IF VCO and Dual Synthesizer RF section.

• Offset VCO and Dual Synthesizer IF section.

Figure 12 Frequency Generating Section - Block Diagram

Of fset VCO

Second LO

Dual Synthesizer (U808)

Main VCO

Main Synthesizer

493.65-513.65 MHz to RX Mixe

113.65 MHz to Offset Mixer

493.65-513.65 MHz to TX MixerReferenceOscillator - TCXO

Divider

OSC_IN

DOI F

IF Section

RF Section

DORF219.3MHz

FINIF

FINRF

50kHz

100kH zOSC_IN

WPICXTALBASE

PRSCI N

CPGITR

Data

LOIN

LPF

LPF

LPF

Osc.

Osc.

Osc.

Buf fer

Theory of Operation

2 - 26 68P02963C70-O

REF. Oscillator - TCXO

The TCXO is the reference frequency source for all the radio synthesizers. Theoutput of the oscillator is a 16.8 MHz stable temperature compensated referenceclock. This signal is present at pin 3 of the TCXO. This oscillator’s centre frequen-cy is programmed (256 steps of approximately 0.1 ppm). It drives the TCXO buff-er to split the 16.8 MHz signal to the WPIC, LMX Dual Synthesizer and GCAPIII.

The 16.8 MHz signal from pin 3 of the TCXO is routed into the following:

1. The WPIC via C580 to pin K6 XTALBASE. The signal is divided by 4 to produce the 4.2 MHz reference signal, which is used for the Main PLL syn-thesizer.

2. The LMX Dual Synthesizer via C946 to pin OSC_IN. The signal is divided to produce the 100 KHz reference signal for the second LO and to 50 KHz reference signal for the Offset VCO.

Main VCO and Main Synthesizer

The synthesizer components are WPIC, Loop Filter, VCO and buffer. It producesthe LO signal.

The synthesizer functions are as follows:

• To serve as the local oscillator for the mixer of the receiver. It is used to down-mix the RF frequency (109.65 MHz).

• To serve as the LO for mixing the transmitter IF frequency (generated by the Offset VCO) into the transmit RF band. The transmitter Offset VCO fre-quency is 113.65 MHz. This conversion is performed in the Tx Mixer.

• To serve as the WPIC feedback signal for locking the main synthesizer.

The WPIC is programmed by the DSP through the SPI bus.

WPIC

The WPIC contain internal synthesizer loops:

1. The main PLL is a three accumulators, fractional N system with a 24-bit resolution. The 16.8 MHz signal from pin 3 of the TCXO is routed via C580 to pin K6 of XTALBASE input of the WPIC. In the synthesizer, the signal is divided by 4 to produce the 4.2 MHz reference signal used for the main PLL synthesizer.

2. The second LO generator, which has a single ended signal at twice the de-sired IF frequency. The signal is routed as a differential signal (I, Q) to a quadrature phase splitter at the WPIC. The quadrature generator is a single master-slave flip-flop configured in a divide by two toggle mode.

Theory of Operation

68P02963C70-O 2 - 27

LMX - Dual Synthesizer

The LMX233XL is an integrated dual frequency synthesizer that includes prescal-ers. It is used with the second LO at the RF section and with the Offset VCO at theIF section.

The LMX uses the 16.8 MHz from the TCXO for both synthesizers and dividesthe TCXO frequency as follows:

• The reference frequency for the second LO is 100 KHz.

• The reference frequency for the Offset VCO is 50 KHz

Second LO VCO

The Second LO VCO is a discrete VCO that is controlled by the LMX Dual Syn-thesizer RF section. The VCO produces a frequency of 219.3 MHz.

The internal phase detector is of the charged pump type.

The output signal of the of the VCO is routed via the phase detector at U808,pin 5 (FINRF).

The output of the phase detector is present at U808, pin3 (DORF) and than via theloop filter R915, C903, C948.

Offset VCO

The Offset VCO is a discrete VCO that is controlled by the LMX Dual Synthesizer(U808) IF section. The Offset VCO produces frequency of 113.65 MHz.

The internal phase detector is of a charged pump type. The output signal of theVCO is routed via the phase detector at U808, pin 18 (FINIF).

The output of the phase detector is present at U808, pin 20 (DOIF) and than viathe loop filter R829, C895, C860.

Theory of Operation

2 - 28 68P02963C70-O

Display and Keypad Description

Display

The LCD (Liquid Crystal Display) Module is a Graphic Display based upon theKS0741TB-01 display driver.

It consist of LCD Holographic Glass, LED backlight and a 22 pin flex cable con-nected to the Keypad board.

The Communication to the RedCap2 IC is performed using a SPI protocol (SerialPeripheral Interface). The Operation of the LCD is determined upon the RS lineconfiguration (Data/Command).

The Display is 128X100 (Columns X Rows respectively).

Keypad

The RCE is responsible for decoding key presses and displaying them properly onthe LCD. The keys are arranged into a matrix of five rows and five columns, whichincludes the Volume and PTT keys.

The PWR key is not decoded by the RCE; it directly drives the GCAP III, whichsends a signal to RCE through INT1. The five row lines are pulled high via fiveinternal 22 Kohm resistors. The five row lines and five column lines are fed toREDCAP2 I/O pins. Pressing any key also generates the keypad internal interrupt.The REDCAP2 debounces the keys by reading them 25 milliseconds later.

The keypad-decoding scheme works as follows:

1. REDCAP2 sets rows to inputs; all columns are set as outputs and driven logic low.

2. Rows are pulled logic high. When a key is pressed, one row goes low, which indicates a key press and sends an internal interrupt.

3. REDCAP2 reads rows. A low on that row indicates a key press. All others are high.

4. REDCAP2 sets all columns to output logic high.

5. One column at a time is set to output logic low. REDCAP2 reads the rows to see which one is now at a logic low level. (A low seen on a row indicates the correct column and row.)

All keypad circuitry is located on the keypad board. Refer to the keypad boardschematics.

Theory of Operation

68P02963C70-O 2 - 29

Backlight and LEDs

Backlight

The keypad backlight consists of 10 green LEDs. There are two more LEDs in theLCD module that are connected in parallel to the keypad LEDs.

Top LEDs

There are one Green and one Red LEDs, both located on the LCD board. TheseLEDs are used as indicators to the radio operation.

Radio Programming

The radio is entered into programming mode by setting the MOD pin high level,and applying a preamble sequence to the radio via the RS232 lines.

The MOD pin assertion is encountered at least 4 CKIH cycles before the negationof the Reset pin.

Accessory Connector

The CE bus is intended to support connection to accessories, personal computers,and test systems. The bus connector has a total of 17 pins, 9 of which have multi-ple functions. The bus has six basic modes of operation: Normal (also No Acces-sory Connected), USB Mode, Analog Audio Mode, Phone Powered USB Mode,RS-232 Mode, and RS-232/SSI Mode (there is also two additional non-standardmodes, DSC and FLASH which are used only for development, factory program-ming, and debugging). Eight of the 17 pins have different functions depending onwhich mode is selected. The other 9 pins always have the same function regardlessof mode.

The mode is selected by applying appropriate logic levels to the Option Selectpins, named OPTION1 and OPTION2. Some of the modes listed above are select-ed by the additional application of a level on the USB POWER and AUDIO-INpins as well.

Theory of Operation

2 - 30 68P02963C70-O

Mode Select (OPTION1 and OPTION2)

Logic levels applied to the OPTION1, OPTION2, USB POWER, and AUDIO IN lines areused to select the CE Bus mode. The modes will be set as follows:

MODE OPTION_1 OPTION_2 USB_PWR AUDIO_IN

NORMAL (no accessory) 1 1 0 X

USB Accessory/Computer 1 1 >4.0V X

Dumb Accessory 1 0 X 1

Phone Powered USB Accessory 1 0 X 0

RS-232 (8 wire)/IDB Smart Cable 0 1 X 1

RS-232 (4 wire)/SSI 0 1 X 0

PTT 0 0 X X

SB9600 X X

Pin No. Signal Name (Short Form)

Power/Default States

USB Dumb RS232/SSI

RS232 (8

wire)

1 Power Ground (GND) GND GND GND GND GND

2 Battery Feedback (BATT_FDBK) BATT_FDBK

BATT_FDBK

BATT_FDBK

BATT_FDBK

BATT_FDBK

3 External Power (EXTB+) EXTB+ EXTB+ EXTB+ EXTB+ EXTB+

4 USB+/TXD (D+) D+ TXD TXD TXD

5 USB-/RXD (D-) D- RXD RXD RXD

6 USB Power/Ignition/RTS (USB_PWR)

USB_PWR

IGN RTS RTS

7 Switched Battery (SWB+) SWB+ SWB+ SWB+ SWB+ SWB+

8 Hook Switch/CTS (HKSW) HKSW HKSW CTS CTS

9 MUTE/FS/DCD (MUTE) MUTE FS DCD

10 DUMB_SEL2/SCK/RI (DSEL2) DSCEN DSCEN DSEL2 SCK RI

11 DUMB_SEL1/SRDA/DTR (DSEL1)

DSEL1 SRDA DTR

Theory of Operation

68P02963C70-O 2 - 31

12 DUMB_SEL0/STDA/DSR (DSEL0)

DSEL0 STDA DSR

13 Option 1 (OPT1) UPLink UPLink OPT1 OPT1 OPT1

14 Option 2 (OPT2) DNLink DNLink OPT2 OPT2 OPT2

15 Audio Out On/Off (AUDIO_OUT) AUDIO_OUT

AUDIO_OUT

AUDIO_OUT

AUDIO_OUT

AUDIO_OUT

16 Audio In (AUDIO_IN) AUDIO_IN

AUDIO_IN

AUDIO_IN

AUDIO_IN

AUDIO_IN

17 Audio Ground (AUDIO_GND) AUDIO_GND

AUDIO_GND

AUDIO_GND

AUDIO_GND

AUDIO_GND

Pin No. Signal Name (Short Form)

Power/Default States

USB Dumb RS232/SSI

RS232 (8

wire)

Theory of Operation

2 - 32 68P02963C70-O

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68P02963C70-O 3 - 1

Troubleshooting

General

Troubleshooting faults in the radio require proper understanding of the different circuitry con-tained in the radio. Since the radio contains a highly integrated system, the software and hard-ware functions can not be separated easily. Thus, it is also necessary to understand thefunctioning of different ICs and the role of the software in the operation of the radio.

This service manual includes schematic diagrams, circuit board layouts, block diagrams, andtroubleshooting procedures, which help a technician to troubleshoot a malfunctioning circuitand detect a defective component.

NOTE: The CPS has no capability to tune the radio. Tuning theradio can only be performed at the factory or at theappropriate Motorola Repair Centre.Components replacement can affect the radio tuning andmust only be performed by the appropriate MotorolaRepair Centre.

The radio is tuned and tested at the factory. The results of the tuning procedures are stored ina special EEPROM. This information includes tuning and other system parameters. The areaof the memory in the radio where the tuning information stored is called the “codeplug”. Aradio codeplug can be read using the CPS programme.

Test Procedures

This section explains the procedures required to troubleshoot a MTH500 radio.

The digital tests should be performed using the GoNoGo PATS test and TetraCom SW. Touse the TetraCom you must go to test mode by using the command <Test Enter>.

Troubleshooting

3 - 2 68P02963C70-O

Troubleshooting Flowcharts

Use the following flowcharts to troubleshoot the radio. These flowcharts contain proceduresusing TetraCom SW application, GoNoGo PATS test and factory test modes for troubleshoot-ing radios having digital, receiver, transmitter, or frequency generation test failures.

DMO Troubleshooting Charts

The troubleshooting flowcharts for the DMO mode are same like the TMO mode. If a problemoccurs in the DMO mode, then refer to the respective flowchart given under TMO mode.When a problem is found and fixed according to the TMO troublshooting charts, then it is au-tomatically fixed in the DMO. However, if the problem still remains in the DMO mode andnot in the TMO mode, then the software should be fixed.

TMO Troubleshooting Charts

The following flowcharts are included for the TMO mode:

* Digital Troubleshooting

* Transmitter Troubleshooting

* Receiver Troublshooting

* Synthesizer Troubleshooting

* Audio Troubleshooting

Troubleshooting

68P02963C70-O 3 - 3

Digital Troubleshooting

Digital Analysis Test

Use this test for troubleshooting the main board.

After completing thesetup procedure, power

on the unit.

Does thepower supply showcurrent of 0.05 to

0.1A?

Replace theMain Board.

Is thepower supplycurrent correct

now?

Check for a defectiveREDCAP2 (U401)

Refer to the MainBoard DC Flowchart

Use the GoNoGoPATS test for

“Bootload”

Didthe unit pass

the “Bootload”test?

A

Replace theMain Board.

Is thePower Supplycurrent OK?

Check for a defectiveREDCAP2

(U401)

Is the32kHz clock

From GCAP3Tp600 OK?

Is the8.4kHz clockFrom WPIC

correct?

2. Refer to theRF WPICflowchart

2. Check for a defectiveREDCAP2 (U401)

3. Check assemblyof the RCfilters U105, U106,U107

No

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Refer to theDC distribution (V2-2.775 V)

Test flowchart

1. Refer to theDC distribution(V2-2.775 V) Testflowchart

1. Refer to theDC distribution(V2-2.775 V) Testflowchart

Troubleshooting

3 - 4 68P02963C70-O

Digital Analysis Test (Cont.)

Did the “I/O_Loop”test pass?

Did thebacklightturn on?

Check beads E007,E005, E006 and40 pin connector

Use the GoNoGoPAT S test “IO_Loop”(40 pin connector)

Test the backlightby turning it on

Replace theKeypad and LCD

Boards

No

No

Yes

Yes

Note:This test will be perform by TetraCom SW application.Command: <BackL EN/DIS>.

Did theunit pass the

“Flash_up” test?The Flash (U403)

is defective.

Use the GoNoGoPAT S test for“Flash_up”

(U403)

A

B

No

Yes

Troubleshooting

68P02963C70-O 3 - 5

Digital Analysis Test (Cont.)

Does text appearon LCD?

Is J2 OK?

Contacts via 22pin Flex OK?

Visually check J2connector

on LCD board

Check 22pin Flex

Replace LCD

Replace FlexReplace J2 onLCD board

Check the LCD

C

B

No

No

Yes

Yes

Yes

No

Troubleshooting

3 - 6 68P02963C70-O

Digital Analysis Test (Cont.)

Did thevibratorvibrate?

Is theVoltage

OK?

Are theVoltages

OK?

Check the Power SupplyV1, 1.875V on C611

when “VIBR EN” TetraComcommand has been entered

Check 1.875V on D001and <0.4V on Q002

pin 1, 4

Replace the Vibrator

Check for defectiveQ002 or D001

The Main Boardsuccessfully passed

all tests

Refer to theDC distribution (V2_2.775V)

Test flowchart

Test the vibrator

No

No

Yes

Yes

Yes

Note:This test will be perform by TetraCom SW application.Command: <VIBR EN/DIS>.

C

Troubleshooting

68P02963C70-O 3 - 7

DC Distribution (V2_2.775V) Test

Use this test on a unit with the following symptoms: no power, no V2_2.775V, V1_1.875V,V3_2.775V, VREF1_2.775V, VREF2_2.775V.

Note: The following are the DC power distribution voltages with their correct values and ap-propriate location to check the voltages:• Fused_B+ (3.6 Vdc) @ F600• Filt_B+ (3.6 Vdc) @ C640• V1_1.875V (1.875 Vdc) @ C611• V2_2.775V (2.775 Vdc) @ C610, C613, C657• V3_2.775V (2.775 Vdc) @ C609, C658, C659• VREF1_2.775V (2.775 Vdc) @ C628• VREF2_2.775V (2.775 Vdc) @ C612, C660, C661• V4_2.775V (2.775 Vdc) @ C625, C644, C647• VSIM1 (3 Vdc) @ C653• 5V_RF (5 Vdc) @ C615, C651• PWM2_1.8V (1.8 Vdc) @ C624, C648• PWM1_5.6V (5.6 Vdc) @ C623

Troubleshooting

3 - 8 68P02963C70-O

DC Distribution (V2_2.775V) Test (Cont.)

Is the voltage OK?

Is the voltage OK?

Is the voltage OK?

Is the voltage OK?

Is resistance OK?

Check the benchPower Supply

Replace FuseF600

Check junction ofF600 and VR601

for 0 (ground)�

Check traces to Fused_B+for oepens.

Check Q600 pin 4circuitry for shorts.

Repair, as necessary.

Replace E600

Check junction ofF600 and Vr601 pin 2for 3.6Vdc (Fused_B+)

Check Q600 pin 3for 3.6 Vdc

Check all Fused_B+circuit components.

Repair, as necessary.

Check C640for 3.6 Vdc (Filt_B+)

Checkbattery contact P1-4

for 3.6 Vdc

A

No

No

No

No

Yes

Yes

Yes

No

Yes

Yes

Troubleshooting

68P02963C70-O 3 - 9

DC Distribution (V2_2.775V) Test (Cont.)

Is the voltage OK?

Are frequencyand amplitude OK?

Is Resethigh?

Replace U600 (GCAP III)

ReplaceU600 (GCAP III)

Check TP600 for32 kHz clock with 2.775V

amplitude

Check TP603for the Reset high

Check Filt_B+ atC640 or C652

for 3.6 Vdc

B

A

No

No

Yes

Yes

Yes

No

Troubleshooting

3 - 10 68P02963C70-O

DC Distribution (V2_2.775V) Test (Cont.)

Is the voltage OK? Replace U600 (GCAP III)

Check C610, C613, C657for 2.775 Vdc(V2_2.775V)

Refer to otherDC DistributionTest Flowcharts

B

No

Yes

Troubleshooting

68P02963C70-O 3 - 11

DC Distribution (SWB+) Test

Use this test on a unit with the following symptoms: no SWB+.

Note: This test will be performed using TetraCom SW application commands <SWBEN/Dis>.

Is the voltage OK?Is the voltage

0.3V?<

Are voltages OK?

Is the voltage OK?

TetraComcommand“SWB Dis”

SWB+current limit

test OK

TetraCom command“SWB EN”

Check R119

Refer to theDC distribution (V2-2.775 V)

Test flowchart

Check If U104 pin 5 isshorted to ground.

Repair, as necessary.

Check U104 pin 3Voltages >2.0V for “SWB EN”

<0.4V for “SWB Dis”(SPICS4A-Redcap)

Check U104.Replace if necessary

Check U104 pin 1for 3.6 Vdc (Filt_B+)

Check U104 pin 6for 3.6 Vdc

NoNo

No

No

Yes

Yes

Yes

Yes

Troubleshooting

3 - 12 68P02963C70-O

DC Distribution (V4_2.775V) Test

Use this test on a unit with the following symptoms: no V4_2.775V.

Is the voltage OK?

Is the voltage OK?

Is the voltage OK?

Is the voltage OK?

Check tracesto the RX section,

Freq. Gen. section,and TX section

Refer to theDC distribution (V2-2.775 V)

Test flowchart

Replace U600(GCAP III)

Replace E200

Check Q602 pin 1

for 3.0 Vdcreference voltage

(V4DRV)

Check Q602,replace if required

Check Q602 pin 3for 3.6 Vdc(Filt_B+)

Check Q602 pin 2for 2.775 Vdc

No

No

No

No

Yes

Yes

Yes

Yes

Troubleshooting

68P02963C70-O 3 - 13

DC Distribution (V3_2.775V/PWM2_1.8V) Test

Use this test on a unit with the following symptoms: no V3_2.775V, no PWM2_1.8V.

Is the voltage OK?

Is the voltage OK?

Check C624for 1.88 Vdc

(PWM2_1.8V)

Check E401 ferritebeads by REDCAP2

for opens

Check C609, C658, C659for 2.7 Vdc

(V3_2.775 V)

Yes

No

No

Yes

Refer to theDC distribution (V2_2.775 V)

Test flowchart

Refer to theDC distribution (V2_2.775 V)

Test flowchart

Troubleshooting

3 - 14 68P02963C70-O

DC Distribution (V5_RF/PWM1/VSIM1 _5.6V) Test and (VSIM1) Test

Use these tests on a unit with the following symptoms: no V5_RF, no PWM1_5.6V,or no VSIM1_5.6V.

Is the voltage OK?

ageIs the volt OK?

Is the voltage OK?

Is the voltage OK?

Check E201for opening

Refer to theDC distribution (V2_2.775 V)

Test flowchart

Replace L600

Replace U600(GCAP III)

Disconnect E201

Check3.6 VdcL600, C601

for

Check C623for 5.6 Vdc

Check C615, C651for 5 Vdc

No

No

No

No

Yes

Yes

Yes

Yes

Refer to theDC distribution (V2_2.775 V)

Test flowchart

Check VSIMI C652for 3.0 Vdc

Is the voltage OK ?Check trace tillC24, C406, C403

Yes

Check U601 pin 3for 2.775 Vdc

No

Is the voltage OK?

Refer to theDC distribution (V2_2.775 V)

Test flowchart

Check U601 pin 1for 5.6 Vdc

Is the voltage OK?Refer to the

DC Distribution 5V-RFTest flowchart

Replace L601

VSIMI

No

Yes

Yes

No

PWMI

Troubleshooting

68P02963C70-O 3 - 15

Transmitter Troubleshooting

Standby Current Troubleshooting

This test should be carried out only after the successful completion of the previous tests.

Measure the radiostandby current

by using PATS station

Is standbycurrent aboveupper current

limit?

No

No

Yes

Yes

Check if there are shorts on the board:- check if RF PA U809 is shorted to the ground- check voltage regulator VR601, R640, current

U104, VR102, elements on FLT_B+supply lines.

Replace parts i f faulty.Repeat the St andby Current test.Also see "GCAP" section

switch

Is standbycurrent below

minimum currentlimit?

Check:Radio Fuse F600, Switch Q600, bead E600, CR601.Replace damaged part.Repeat the St andby Current test.Also see "GCAP" section.

OK

Note: The standby upper current limit is 100mA and lower limit is 4mA

Troubleshooting

3 - 16 68P02963C70-O

Open Loop Power Test

This test should be carried out only after the successful completion of the previous tests.

A

No

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Measure theOpen Loop power

by using PATS

Is theoutput power

less than120mW (20.8dBm)?

Is theoutput power

above 0.5W (27dBm) ?Is the radio

in oscillation?

Check the bias voltageson pins 8,16 of RF PA U809.

Check resistors R827and R828, regulators Q807and Q911, replace partsif faulty.

Perform the Open looppower test again

Check RF PA U809, Isolator FL801, Coupler U806,components: E801, E808, E809, L916, L917, L920, L921,L923, L918, L919, C1030,C1028,C1029, C822,C867.

Replace damaged parts.Perform the Open loop power test again.

OK

Are voltages2.775V_RF, 5V_RF,

RAW_B+_RF and 2.5V_TXsupplied to the Transmitter

components?

Check the battery,regulators Q800, Q805,Q806, Q807, Q911,elements on 2.5V_TX lines.

Replace if faulty.Perform the Open loop

power test again.

Is there~ 2.5Vdc of ANT_ENsignal on Q806 pin(or C830) during

Tx slot?

Check E810.Perform REDCAP2 test.Repeat Open Loop

Power Test.

Using a Power Probe, measureRF power at the RF PAU809 input (pin 6).

Is power < -20 dBm?

Using a Power Probe test TXline-up (starting from RFPA U809 output: pins 12,13)by measuring output powerafter every component ofTransmitter till Antenna.It should be as specifiedin the spread sheet, otherwisereplace the damagedcomponents.Perform the Open loop powertest again.

Using a Power Probe,measure RF power at theLNODCT U803 outputs(pins 51,52).

Troubleshooting

68P02963C70-O 3 - 17

Open Loop Power Test (Cont.)

A

B

No

No

No

No

Yes

Yes

Yes

Yes

Is power < -4 dBm?

Check Tx line-up fromLNODCT U803 output till RFPA U809 input, replacedamaged parts.Perform the Open loop powertest again.

Perform the following:1. Visually check all components and solder connections around LN ODCT.2. Check L926 and ODCT pins 34,40,53,63 for 2.775Vdc_ODCT, check

pins 51, 52 for 5Vdc during Tx slot; check ODCT pins 45,46,56,57 for 2.3Vdcduring Tx slot.

Are all checks OK?

Replace damaged components.Perform the Open loop powertuning and test again.

Using aeasure

the RF level atpin 6 of Mixer (U800)

power highimpedance probe m

Is thepower < -6.5 dBm?

No

Yes

Check the power at pin 1of U800 mixer.

Is thesignal at U800

pin 1 stable and its power1 dBm?>

Check L809, C844.Perform Offset VCO test.Perform the Open loop powertest again.

Check the power at pin 3of U800 mixer

Is thesignal at U800

pin 3 stable and itspower -0.5 dBm?>

Replace the mixer U800.Perform the Open loop powertest again.

Check C800, L800, R805,C833.Perform Main VCO Buffer test.Perform the Open loop powertest again.

Measure the RF power at inputand output of Image filter (FL800).Calculate the difference betweenImage filter input and output.

No

Yes

Is thedifference > 3.5 dB?

Check FL800, Q808 (LO Driver),replace if faulty.Perform the Open loop powertest again.

Troubleshooting

3 - 18 68P02963C70-O

Open Loop Power Test (Cont.)

B

No

No

No

Yes

Yes

Yes

No

No

Yes

Yes

Measure the RF power at theinput of LO Driver (Q808) andinput of I/Q splitter U801.Calculate the LO Driver Gain.

Is the Gain< 22 dBm?

Check for 2.5Vdc during Tx slot,if voltage is OK, check L813, ifL813 is OK replace Q808.If there is no voltage, checkQ805 and L811.Replace damaged parts.Perform the Open loop powertest again.

Measure the RF power at inputand output of I/Q splitter (U801).Calculate the differencebetween I/Q splitter input and output.

Is thedifference > 3.5 dB?

Check I/Q splitter U801, C851,C849.Replace faulty parts.Perform the Open loop powertest again.

Measure theASW level on pin 28

of LNODCT U803 duringTx slot by using scope. Does theASW level go low (about 0V dc)

during Tx slot?

Replace LNODCT U803Perform the Open looppower test again

Replace LNODCT U803.Perform the Open loop powertest again.

Perform "WPIC Test"Perform the Open looppower test again

Was anydata detected?

Verify by using scope that there is an inputdata on pins 58-61 of the LNODCT U803.(AC voltage 300-400mV peak)

Does thetwo condition exist?

Verify by using scope that:1. There is 2.4MHz clock (1.8 0.3Vdc) on

pins 11,12 of U803 during Tx slot.2. SLT and SLTB go low on pins 9,10 of U803.

Troubleshooting

68P02963C70-O 3 - 19

WPIC Test

This test should be started in accordance to Open Loop Power test.

No

Yes

No

No

Yes

Yes

Perform the following:1. Set the unit to the Open loop test at a frequency of 390MHz.2. Read the value of WPIC1 9 register by using TetraCom. It has 8 b its.

Change the hexadecimal value of WPIC1 9 t o switch the 5-th bit from 0 to 1.3. U bserve output data voltage on Test Points 500,501.sing a scope o

Is datavoltage (0.4-0.8Vp-p)

observed duringTx slot?

Replace WPIC U503.If the Open Loop Power problemexists replace LNODCT U803.Repeat the Open Loop power test.

TetraCom Commands:WPIC 1 9Read the register value

Measure:1. 2.775_WPIC dc voltage on C572 (C516, C519, C555,

C552, C549, C573, C547, C535, C502, C542.2. V3_2.775V on C515.

Are voltages(2.6-2.9Vdc)

OK?

Perform the GCAP test.If the problem still existsreplace WPIC U503.

Measure TXE signal(0.5-2.3Vdc) during Tx slot on R514.

Is the TXE signal OK?

Verify the REDCAP2 U401 functionality,replace if faulty, repeat WPIC test, if theproblem still exists replace WPIC U503.

Troubleshooting

3 - 20 68P02963C70-O

Closed Loop Power Test

This test should be carried out only after the successful completion of the previous tests.

No

Yes

No

No

Yes

Yes

Tune the radio on PATS.

Is theradio close loop

output power <28dBmor >31 dBm?

OK

OK

Check the elements: coupler U806, R815, R818,R825, R826, C817. Replace if faulty and repeat theClose Loop test.

Does theclose loop power

problem stillexists?

Measure the LO power on pin 24 MVCOof the LNODCT U803 (800-400 mVp-p(single ended) swing into a 50Ohm load).

Is the LO power OK?

Replace LNODCT, performOpen Loop Power test andClose Loop Power test.

Check R838, C814 replace if faulty, repeatClose Loop Power test. If the problem stillexists replace LNODCT U803 and repeatOpen Loop Power test and Close LoopPower test.

Troubleshooting

68P02963C70-O 3 - 21

Transmitter Current Consumption Test

This test should be carried out only after the successful completion of the previous tests.

No

Yes

NoYes

OK

Start TX current test.

Is TXcurrent > 2.2A

(average TX current?)

1. Measure RF PA bias voltages on pins 8and 16 of U809.

2. Measure supply votage on pin 12 of U809.

Are supplyor (and) bias voltages

high?

Repeat Open loop power test andClose loop power test.If the problem still exists replace U809.Repeat Transmitter current consumption test.

1. Check power supplies;2. Repeat tuning of the radio.Repeat Transmitter currentconsumption test.

Troubleshooting

3 - 22 68P02963C70-O

Receiver Troubleshooting

No

No

No

No

No

Ye s

Ye s

Ye s

Ye s

Ye s

Is thegain below

4dB?

Is theGain still below

4db?

Is theGain still below

4db?

Check with all powerInput s/Output s o f Ant. SW .,Front Filter (Fl500), LN A(U500), Second Filter (Fl501),Mixer (U504), Xt al Filter(Fl502). Replace if necessary .Check Front Gain again.

Check second LO .-16dBm<Power<-10dBmFreq.=219.3MHzRe pa ir if necessary(See Synth. Troubleshooting)

OK

Wa s that theproblem ?

Check 2.775V suppl y t oLN A & Mixer and checkcontrol lones (Q504, Q500).Rep air if necessary .Check Front Gain again.

Check Main Synth. Powerlevel (>-5dBm) and frequency .F F +109.65MHz).Rep ai r i f necessary .(See Synth. Troubleshooting)

main = rx

TetraCom Commands (TD MMode):>Freq. RX 390.0125>Mode RXTDM/Mode RSSI>LIMITER ON>BERRout WPIC BaseBand signalto test point s:>WPI C 2 0 7 2 NOWActivating control lines atcontinuos mode:WPI C 3 9 1 b NOW

Run RX_BER -112dBm &ULTIMA TE_BER

Check BaseBand Output atWPIC (U503) TP500/TP501.

Passed?Return to firsttest.

Check Front Gain, usinga R F probe on C536,

Frequency 109.65MHz

Replace if necessary.

Troubleshooting

68P02963C70-O 3 - 23

Synthesizer Troubleshooting

Use this test on a unit with the following symptom: no Tx or Rx

Using a 50-ohm probe on thespectrum analyzer,check the LO

output at the buffer output atR927 and R944.

Is the frequencyat 503.65MHz?

Is the bufferoutput between-5 and -3dBm ?

The unit tested successfully

check the VCOoutput at R937 ,Is

the freq 529.65MHz?

Test the VCO controlvoltage at R917.The typical

range is 0.5 to 4.5 V.

Check for opens,shorts,ormissing components in the

buffer circuits.Also check for 2.3 Vdc on

L907.

Is the controlvoltage railed to<0.5V or >4.5V

Possible prescaler feedbackproblem:1.check solderin ofC933,C915.2.Probe to determine if LOis reaching the prescalerinput.

NO

YES

YES

NO

YES

Note:This isthe abnormal

condition.

No

A

NO

YES

TetraCom Commands:

MAIN_VCO ONWPIC 3 1 c0 NOWWPIC 2 4 17 NOWWPIC 2 5 F4 NOWWPIC 2 6 9e NOWWPIC 2 7 79 NOWWPIC 0 5 30 NOWWPIC 0 8 0 NOW

Troubleshooting

3 - 24 68P02963C70-O

Synthesizer Troubleshooting (Cont.)

Possible VCO problem:Check for opens orshorts in the VCO circuit.

A

Whether theproblem found

and fixed ?

Check for the following:2.4Vdc on R934 and on R923.Confirm that the resonator tabis prperly soldered.Confirm that the Varicap is inthe right direction.

Unit testingis complete

Yes

Check Loop filter:Check for opens

or shorts .

NO

Whether theproblem found

and fixed ?

Unit testingis complete

Yes

NO Check buffer:Check for opens

or shorts .

Whether theproblem found

and fixed ?

Unit testingis complete

NO

Yes

WPIC Problem

Troubleshooting

68P02963C70-O 3 - 25

Second LO VCO Test

Perform the following:1.Remove the 2nd_LO shield.2.Set the Unit to continuous

Recieve mode (Rxndc).3.Measure the 2nd_LO control

voltage at C761.

Measure the RF power level atC959 at 219.3MHz.

The 2nd_LO VCO/synthesizeris O.K.

Chek for feedbackproblem:1.check soldering ofC262,R951,C970.2.Measure the RF powerlevel at Pin 5 of the LMXat 219.3MHz.

Check Q905,R939 for solderingproblems and forthe right values.

(compare with BOM)

No

Check DC supply for the VCO:1.Check for SF_OUT on C902,R939,R906.2.Check for TETRA_2nd_LO_En onQ910.

Check DC BlockNo

Check DC supply for the LMX:1.Check for 5V_RF on C954or on Pin 22 of the LMX.2.Check 2.775V_RF on Pin

23 and Pin 24 of the LMX.

Yes

Check DC BlockNo

Perform VCO_ONLY TEST:1.connect an external 0.5 to 4.5Vpower supply to R9016.2.Measure the RF freq at C959.3.Adjust the external supply voltageuntil the frequency is219.3MHz.

The VCO is working properly.the problem is with the LMX.

Replace the LMX.

Yes

Check R915,C903,C948,R916,D902,C960,L905,C940,C920,R909,R906,C922,C921,R922,R939,R906,C953,C959 for soldering

problems andcompare with BOM

values.

No

Is the control Voltage at R916 andC948

between 0.5 and 4.5Vdc

Is the power level at 0dBm

and stable on frequency.

No

Does the VCO hasits DC Supply?

Does the LMX has itsDC Supply?

Can the frequencybe set to

219.3MHz?

Yes

Yes

TetraCom Commands:

WPIC 3 9 1b NOWdual RF 0202a2 004447

Yes

Yes

Troubleshooting

3 - 26 68P02963C70-O

Offset VCO Test

Troubleshooting

68P02963C70-O 3 - 27

Audio Troubleshooting (External Mic to External Out)

Set the audio input to the external mic to 1.02KHz @ 44mV RMS. Test sequence is controlled by TetraCom commands tothe external mic-to-external out loopback.

Check R110, C103 & continuity to connec-tor.

Check R108, C104 & continuity to connec-tor.

No trouble found

Connect a scope or DVM to the following points and measure ac levels in Vrms.

Start AUDIO_LOOPBACK (1)

Is voltage atC103 =

44mVRMS?

Yes

No

Yes

No

Tetracom Routine

MIC VAMICGA 0DSP_LOOP ONDSP_VOL 0Vol 0SPKR VA

Is voltage atC104=

66mVRMS?

Troubleshooting

3 - 28 68P02963C70-O

This page left blank intentionally

68P02963C70-O 4 - 1

Programming the Radio

Programming The Radio

1. Verify that the radio is turned off.

2. Run the Customer Programming Software (CPS) on your computer.

Codeplug Programming

1. On the menu bar, click “File” “Open”.

2. Browse for the required Codeplug file and open the file.

3. The CodePlug window appears on the screen.

4. Click the Toolbar “Tools” icon and select “Write Entire Codeplug”.

5. Press the “Yes” icon.

Programming the Radio

4 - 2 68P02963C70-O

NOTE: The Codeplug is now being written into the radio. Aprogress bar is displayed on the computer screenshowing the writing status. The following display isshown on the radio screen:

After a successful writing, the message “The OperationWas Successful” appear on the computer screen.

6. Press the OK button.

Application Programming

1. On the menu bar click “Tools”, “Write Software”.

NOTE: The CPS is trying to reads data from the radio. A “PleaseWait” message is displayed on the computer screen.After the process ends, a “Operation Results” windowappears on the computer screen.

2. Press the “Write” button.

Diag. SW Ver. 01.01

HW ID Code: XXX

Flash: TE28F320C3BA

Command WRITE REQ.

00:00:00

--Done--

Elapsed TimeIndication

Appears at theend of the process

Programming the Radio

68P02963C70-O 4 - 3

NOTE: The application is now being written into the radio. Aprogress bar is displayed on the computer screenshowing the writing status. The following display isshown on the radio screen:

After a successful writing, the message “The OperationWas Successful” appear on the computer screen.

3. Press the “Ok” button.

4. Click the toolbar “R” (Reset) icon.

Diag. SW Ver. 01.01

HW ID Code: XXX

Flash: TE28F320C3BA

Command WRITE REQ.

00:00:00

--Done--

Elapsed TimeIndication

Appears at theend of the process

Programming the Radio

4 - 4 68P02963C70-O

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68P02963C70-O 5 - 1

Preventive Maintenance

This portable radio does not require a scheduled preventive maintenance program. However,periodic visual inspection is recommended.

Inspection

Inspect the radio’s external surfaces. A detailed inspection of interior circuitry is not neededor recommended.

Cleaning

The following procedures describe the recommended cleaning agents and methods to be used when cleaning the external and internal surfaces of the radio. External surfaces should becleaned whenever a periodic visual inspection reveals the presence of smudges, compound,or grime. Internal surfaces (circuit boards and components) should be cleaned only when theradio is disassembled for servicing or repair.

The only recommended agent for cleaning external radio surfaces is a 0.5% solution (one tea-spoon of detergent per gallon or four litres of water) of mild dishwashing detergent in water.The internal surfaces should be cleaned only with isopropyl alcohol (70% by volume).

Maintenance

Maintenance

5 - 2 68P02963C70-O

Safe Handling of CMOS Devices

Complementary metal-oxide semiconductor (CMOS) devices are used in the radio. While theattributes of CMOS devices are many, their characteristics make them susceptible to damageby electrostatic or high voltage charges. Damage can be latent, resulting in failure occurringweeks or months later. Therefore, special precautions must be taken to prevent device damageduring disassembly, troubleshooting, and repair. The following handling precautions aremandatory for CMOS circuits, and are especially important in low humidity conditions.

• All CMOS devices must be stored or transported in conductive material so that all ex-posed leads are shorted together. CMOS devices must not be inserted into conventionalplastic “snow” or plastic trays of the type that are used for storage or transportation ofother semiconductor devices.

• All CMOS devices must be placed on a grounded bench surface and the technician mustalso be grounded before handling the devices. This is done most effectively by havingthe technician wear a conductive wrist strap in series with a 100k� resistor to ground.

• Do not wear nylon clothing while handling CMOS circuits.

• Do not insert or remove CMOS devices with power applied. Check all power suppliesto be used for testing CMOS devices and be certain there are no voltage transientspresent.

• When straightening CMOS device leads, provide ground straps for the apparatus used.

• When soldering, use a grounded soldering iron.

• All power must be turned off in a system before printed circuit boards containing CMOSdevices are inserted, removed, or soldered.

Disassembling and Reassembling the MTH500 Unit

Mechanical checks and self tests should be performed on the unit at the basic level of service.To perform testing at the field level, it is sometimes necessary to remove the antenna and thehousing from the unit. Procedures for disassembling and reassembling the unit are describedin the sections that follow.

NOTE: Read each procedure thoroughly before performing the actual task.

Maintenance

68P02963C70-O 5 - 3

Protecting Static-Sensitive Devices

This unit contains static-sensitive devices that must be protected when opening the unit, orstoring and transporting any printed-circuit board.

To create a proper ground:• Ground the working surface of your service bench.

If possible, use the Motorola Static Protection Assembly (part #0180386A82) to groundyour service bench. This assembly contains a wrist strap, two ground cords, a table mat,and a floor mat.

• Wear a conductive wrist strap in series with a 1Mg ohm resistor to ground.

• Do not wear nylon clothing when handling any printed-circuit board.

• Prior to touching any printed-circuit board, touch an electrical ground to remove anystatic charge that might have accumulated.

To store or transport a circuit board:• Place the printed-circuit board in conductive, anti-static material.

• Do not insert the printed-circuit board into conventional plastic “snow” trays used fortransporting other devices.

Maintenance

5 - 4 68P02963C70-O

Removing and Installing the Antenna

The antenna must be removed each time the back housing is removed.

Recommended tools: no tools are required

To remove the antenna from the unit:(See Figure 13)

• Unscrew the antenna counter clockwise until it is detached from the handset.

To install the antenna in the unit:• Screw the antenna clockwise to the handset.

Figure 13 Antenna Removal and Installation

Removing and Installing Battery Door and Battery

Recommended tools: no tools are required

To remove the battery door from the unit:(See Figure 14)

1. Place the unit facing down on the work area.

Maintenance

68P02963C70-O 5 - 5

2. Press the battery door release button, slide the door towards the bottom of the unit and lift it up from the unit.

Figure 14 Battery Door Removal

To remove the battery:(See Figure 15)

1. Press the battery fastening bridge toward the upper side of the unit.

2. Simultaneously, using other hand, release the battery from its chamber.

Figure 15 Battery Removal

Maintenance

5 - 6 68P02963C70-O

To install the battery:

1. Locate the battery so that the lower part (coloured silver) is touching the lower wall of the battery chamber.

2. Carefully press the battery down until it snaps into location.

To install the battery door:

1. Position the door on the unit over the battery so that the door release button is just above the battery fastening bridge.

2. Slide the door upward until the door snaps into location.

3. Verify that the door is aligned with the handset back housing.

Removing and Installing the Back Housing

Recommended tools: T-8 Torx bit, Torx driver, mini flat-tip screwdriver

Removing the back housing from the unit:(See Figure 16)

1. Remove the antenna, refer to “Removing and Installing the Antenna”.

2. Remove the battery door and the battery, refer to “Removing and Installing Battery Door and Battery”.

3. Place the unit facing down on the work area.

4. Using the screwdriver remove the oval label at the top of the unit and the tamper evi-dent label in the center to enable access to all six screws fastening the back housing. Clean the adhesive remains of the tamper evident label using alcohol.

5. Using the Torx driver with the T-8 Torx bit, unscrew the six screws fastening the back housing.

6. Carefully remove the back housing from the unit.

Maintenance

68P02963C70-O 5 - 7

Installing the back housing:

1. Position the back housing over the unit.

2. Verify that the cover is positioned correctly, screw holes are aligned to the threads of the front housing, external antenna connector is inserted into its dedicated hole, and the styling groove of the back housing meets the styling groove of the front housing.

3. Set the Torx driver to 3.5 in-lb (0.4 Nm).

4. Screw the back housing screws in the following order: Upper left and right screws, center left and right screws and lower left and right screws.

5. Glue a new oval label over the holes of the two upper screws and a new tamper evident label (*only available to Motorola Services Centres) on the holes of the two center screws.

6. Install the battery and the battery door, refer to “Removing and Installing Battery Door and Battery”.

7. Install the antenna, refer to “Removing and Installing the Antenna”.

Figure 16 Back Housing Removal and Installation

Oval Label

External Antenna Connector

Back HousingFastening Screws

(X6)

Maintenance

5 - 8 68P02963C70-O

Removing and Installing the Vibrator

Recommended tools: mini flat-tip screwdriver

Removing the vibrator:(See Figure 17)

1. Remove the back housing, refer to “Removing and Installing the Back Housing”.

2. Turn the back housing up side down and, using the screwdriver, remove the vibrator from its chamber inside the back housing.

Installing the vibrator:

1. Carefully push the vibrator into its chamber in the back housing.

2. Install the back housing, refer to “Removing and Installing the Back Housing”.

Figure 17 Vibrator Removal and Installation

Back Housing

Vibrator

Maintenance

68P02963C70-O 5 - 9

Removing and Installing the Main Board

Recommended tools: no tools are required

Removing the main board from the unit:(See Figure 18)

1. Remove the back housing, refer to “Removing and Installing the Back Housing”.

2. Gently lift the main board, I/O connector side at the bottom of the board first, and re-move it from the unit.

3. Gently remove the rubber seal from the I/O connector, verify that the seal is not dam-aged (retain the seal for reinstallation).

Installing the main board:

1. Gently install the rubber seal over the I/O connector.

2. Position the main board in location. Verify that the two guide pins are inserted into the holes in the main board.

3. Gently push the main board down and verify that the Board-to-Board connector is properly connected to the keypad board.

4. Verify that the I/O rubber seal is properly located in the unit.

5. Install the back housing, refer to “Removing and Installing the Back Housing”.

Maintenance

5 - 10 68P02963C70-O

Figure 18 Main Board Removal and Installation

Removing and Installing the Keypad and LCD Boards

Recommended tools: mini flat-tip screwdriver

Removing the keypad and LCD boards from the unit:(See Figure 19)

1. Remove the back housing, refer to “Removing and Installing the Back Housing”.

2. Place the unit facing down on the work area.

3. Open the Personal Hands-Free Kit (PHF) jack cover (See Figure 18).

4. Using the screwdriver, remove the chassis assembly including the main board, keypad board and LCD board, out from the unit.

5. Place the chassis assembly, with the keypad and LCD boards facing down, on the work area.

6. Remove the main board from the chassis assembly.

7. Insert the screwdriver into one of the slots in the upper side of the chassis assembly, above the LCD board, and gently push the boards out from the chassis assembly.

8. According to the board to be replaced, open the required Zero Insertion Force (ZIF) connector, release the flat cable and the board.

Main Board

PHF Cover

I/O Connector

Rubber Seal

Maintenance

68P02963C70-O 5 - 11

Installing the keypad and LCD boards:

1. Place the keypad and LCD boards on the work area so that the ZIF connectors are fac-ing up.

CAUTION: Care must be taken when installing the keypad and LCD boards on the chassis.Failure to comply may result in tear of the flat cable between the two boards.

2. Insert the flat cable into the ZIF connectors and close the connectors doors until a click is heard.

3. Insert the LCD board between the two snags at the sides of the chassis assembly.

4. Push the LCD board down until it snaps into location.

5. Verify that the chassis center guide pin is properly located inside the hole in the LCD board and that the snag at the top of the chassis is inserted into the slot of the board.

6. Install the keypad board on the chassis assembly.

7. Verify that the keypad board is sited parallel to the chassis assembly.

8. Verify that the main board is fully installed with the rubber seal.

9. Turn the chassis assembly up side down.

10. Install the main board on the chassis assembly. Verify that the two guide pins are in-serted to the holes in the main board.

11. Verify that the guide pins are properly located and that the Board-to-Board connector is properly connected to the main board.

12. Install the chassis assembly with the boards into the unit. Verify that the I/O connector rubber seal is properly located in the unit.

13. Install the back housing, refer to “Removing and Installing the Back Housing”.

Maintenance

5 - 12 68P02963C70-O

Figure 19 Keypad and LCD Boards Removal and Installation

Removing and Installing the LCD Module Assembly

Recommended tools: no tools are required

To remove the LCD module assembly from the unit:(See Figure 20)

1. Remove the LCD board, refer to “Removing and Installing the Keypad and LCD Boards”

NOTE: Do not touch the LCD module assembly in the active viewing area;fingerprints on this surface cannot be easily removed.

2. Using your hand, gently disengage the right two snaps and rotate the LCD module as-sembly to the left until it disengaged from the LCD board.

Chassis Assembly

LCD BoardRelease Slot

LCD Board

Keypad Board

ZIF Connectors

Board-to-BoardConnector

Flat Cable

Maintenance

68P02963C70-O 5 - 13

To install the LCD module assembly:

NOTE: Do not touch the LCD module assembly in the active viewing area;fingerprints on this surface cannot be easily removed.

1. Locate the LCD module above the LCD board so that the two guide pins are aligned with the holes in the LCD board.

2. Gently push the module down, right snaps first and then left snaps.

3. Verify that the snaps are located correctly inside the board slots.

4. Remove the protective film from the LCD glass. Verify that no damage exists on the LCD glass.

5. Install the LCD board, refer to “Removing and Installing the Keypad and LCD Boards”.

Figure 20 LCD Module Removal and Installation

LCD Board

LCD Module

LCD ModuleSnaps(X4)

Maintenance

5 - 14 68P02963C70-O

Removing and Installing the Keypad

Recommended tools: no tools are required

Removing the keypad:(See Figure 21)

1. Remove the chassis assembly, refer to “Removing the keypad and LCD boards from the unit:”, steps 1 through 3.

2. Remove the keypad from the unit.

Installing the keypad:

1. Install the keypad inside the front housing.

2. Verify that all the keys are properly inserted into their dedicated holes.

3. Install the chassis assembly, refer to “Installing the keypad and LCD boards:”, steps 1 and 2.

Figure 21 Keypad Removal and Installation

Front Housing

Chassis AssemblyIncluding Main Board

AndLCD and Keypad

Boards

Keypad

Maintenance

68P02963C70-O 5 - 15

Removing and Installing the Microphone

Recommended tools: no tools are required

Removing the microphone:(See Figure 22)

1. Remove the chassis assembly, refer to “Removing the keypad and LCD boards from the unit:”, steps 1 through 3.

2. Remove the microphone.

Installing the microphone:

1. Insert a microphone into location.

2. Install the chassis assembly, refer to “Installing the keypad and LCD boards:”, steps 1 and 2.

Removing and Installing the Earphone

Recommended tools: mini flat-tip screwdriver

Removing the earphone:(See Figure 22)

1. Remove the Acoustic Safety Rubber.

2. Remove the chassis assembly, refer to “Removing the keypad and LCD boards from the unit:”, steps 1 through 3.

3. Using the screwdriver, remove the earphone from the unit. If the earphone was de-tached from its bottom plate, remove the plate as well.

Installing the earphone:

1. Install the Acoustic Safety Rubber.

2. Using the screwdriver, remove the protective film from the adhesive layer at the ear-phone bottom plate.

3. Insert the earphone into location. Verify that the two snags at the earphone sides are properly located in their dedicated slots.

4. Gently push the earphone until it is firmly glued inside the front housing.

Maintenance

5 - 16 68P02963C70-O

5. Install the chassis assembly, refer to “Installing the keypad and LCD boards:”, steps 1 and 2.

Figure 22 Microphone and Earphone Removal and InstallationMicrophone

Earphone

Acoustic Safety Rubber

Front Housing

Maintenance

68P02963C70-O 5 - 17

MTH500 Unit - Exploded View

MTH500 components are listed in the “MTH500 Components List”. The first column markedwith an # sign provides you with the call out numbers of the components as marked in Figure23 and Figure 24.

MTH500 Components List

# Description Part/Kit

1 Front Housing Assembly (Black)Front Housing Assembly (Blue)

0186163T070186163T08

2 Keypad Assembly 0186630T01

3 Chassis Assembly See Figure 23

4 Back Housing Assembly (Black)Back Housing Assembly (Blue)

0186396T040186396T05

5 Antenna 380-400 M Hz (R1) 8586381J02

6 Screw, Self Forming 0304637P17

7 Label, Back 5486278T01

8 Standard Battery Door Assembly (Black)Standard Battery Door Assembly (Blue)

Extended Battery Door Assembly (Black)Extended Battery Door Assembly (Blue)

0186613T010186613T02

0186239T010186239T02

9 LCD Module 7287702M01

10 Keypad Kit FCN9090A

11 Flex LCD to Keypad 8486498T01

12 LCD Kit FCN9797A

13 Chassis 2786168T01

14 Main Board (R2) See Service Replacement Kit Matrix in Appendix A

Maintenance

5 - 18 68P02963C70-O

Figure 23 Exploded View

1

2

3

4

5

7

6 (X6)

8

Maintenance

68P02963C70-O 5 - 19

Figure 24 Exploded View of Chassis Assembly

9

12

13

10

11

14

Maintenance

5 - 20 68P02963C70-O

MTH500 Detailed Service Manual - COMPONENT BOARD LAYOUTS

68P02963C70-O 6 - 1

Component Board Layouts

MTH500 Detailed Service Manual - COMPONENT BOARD LAYOUTS

6 - 2 68P02963C70-O

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MTH500 Detailed Service Manual - COMPONENT BOARD LAYOUTS

68P02963C70-O 6 - 3

Keypad Board (FCN9090A) - Sides 1 and 2

8487639U01_P1

OL 79B02964C13-O

SHOWN FROM SIDE 1O1 79B02964C11-O

P1

C1

C2

C3C4

C7

C8

C9

C10

C11

C12

E1

J1

P2

R1R2

R3

R4R5

R6

TP

1

TP

2T

P3

TP4

U1

U2

U3

U4

U5

VR1

VR2

VR3

VR

4

1

1

1

11 1

1

11

1

1

1

O1 79B02964C12-OSHOWN FROM SIDE 2

OL 79B02964C14-O

8487639U01_P1

D1

D2

D3

D5

D6

D7

D8

D9D10D

13

D14

D17

MK1

S1

MTH500 Detailed Service Manual - COMPONENT BOARD LAYOUTS

6 - 4 68P02963C70-O

LCD Board (FCN9797A) - Side 1 and 2

O4 79B02962C48-O

SHOWN FROM SIDE 1 O1 79B02962C46-O

8486097U01_P1

P1

C1

C2

C3

C4

C5

C6

C7

C8

C9

C10 C11

C12

C13

C14

C15

C16

C17

C18C19E1

M4

M5

S2

S3

S4

S5TP

1T

P2

TP

3T

P4

TP5

TP6

TP

7

8486097U01_P1

D11D

12

O1 79B02962C47-OSHOWN FROM SIDE 2O4 79B02962C49-O

J2

MTH500 Detailed Service Manual - COMPONENT BOARD LAYOUTS

68P02963C70-O 6 - 5

Main Board (FLF9011A) - Side 1

73B02964C24-O

73B02964C21-O

TP823TP923

TP830

TP804

TP930

TP904

TP915 TP815

TP806TP906

TP905 TP805

TP824TP924

TP917 TP817 TP802TP902

TP935 TP850

TP803TP903

TP919 TP819

TP818TP918

TP925 TP825

TP828TP928

TP922 TP822

TP821TP921

TP913 TP813

TP809TP909

TP912 TP812

TP832TP932

TP920 TP820

TP829TP929

TP933 TP833

TP808TP908

TP911 TP811

TP814

J002

Y901

D90

7

SH901

SH003SH912

J700

M500

TP914

8488996U01_P1

SHOWN FROM SIDE 1 O1 o

C03

1

C03

2

C03

3

C03

5

C03

6

C03

7C

038

C04

1

C042

C043

C044

C04

8

C05

0

C10

1C102

C10

3

C107

C108

C109

C110

C11

1

C112

C113

C114C115

C116C117

C11

8

C119

C12

0

C41

4

C415

C42

0

C54

5C60

0

C60

2C60

3C

604

C60

5

C60

6

C607

C608

C60

9

C610

C61

2

C61

4

C616

C617C618

C619 C620C62

1C

622

C62

7

C62

9

C63

0

C63

1

C63

2

C633

C634

C63

5

C63

6

C637 C638

C63

9

C640

C64

3

C646C650

C651

C652

C65

3

C654

C65

5

C65

6 C65

7

C65

8

C65

9

C66

0

C66

1

C66

2

C66

4

C70

1

C702

C70

3

C704

C802

C805

C809

C81

2

C815 C816

C817

C81

8

C820

C82

2

C823

C825

C83

1

C83

4

C83

7

C83

9

C840

C84

1

C842

C86

0

C86

1

C862

C863 C864

C865

C868

C869

C87

0C

871

C873

C87

4

C87

5

C87

6

C877

C87

8

C87

9

C880

C881

C882

C883

C885

C88

6

C88

7

C88

8

C89

0

C895

C89

7

C89

8

C899

C90

1C902

C903

C90

4

C90

5

C906

C909

C910

C915C916

C919

C92

0

C92

1

C92

2

C927C929

C93

0

C931

C93

2

C933

C93

7

C938

C939C940

C942

C946

C948C951

C953

C954

C955

C957 C95

8

C95

9

C96

0

C961

C962

C966

C967

C968

C970

C971

C980

C1004

C1009C1014

C10

16

C1020

C1022

C1023

C10

24

C10

25

C1026

C10

27

C1028

C1029

C10

30

C1031

C10

32

C10

33

C10

45

C1050

CR600

CR601

D001

D10

1

D60

1

D800

D902

E008

E009E01

0

E10

1

E400

E60

0

E60

1

E60

2

E60

3

E60

4

E801

E80

3

E80

8

E80

9

E901

F60

0

FL801

L801

L80

6

L903

L90

5

L912

L913

L916

L91

7

L918

L91

9

L92

0L

921

L922

L92

3

L93

0

M00

5

M00

6

Q00

2

Q10

0

Q60

0

Q801

Q80

4

Q80

7

Q900

Q903

Q904

Q905

Q90

7

Q910

R00

1

R00

3

R00

4

R00

8

R00

9R

010

R01

1R

012

R01

3

R01

4

R019

R020R021

R025

R026

R02

7

R10

1

R10

3

R10

4

R105R10

6

R10

7

R10

9

R110

R111

R113

R118

R120

R51

8

R600

R60

1

R60

2

R60

3

R60

4

R60

5

R60

6

R60

7

R60

8

R609

R610

R61

1R

612

R61

3

R61

4

R61

5

R616

R61

7

R61

8R

620

R62

1

R62

2

R62

3

R62

4

R62

5

R62

6

R62

7

R62

8

R62

9R

630

R63

1R

632

R64

0

R642

R643

R64

5

R64

6R

647

R64

8

R65

0

R65

1

R801 R80

2

R803

R810

R815

R81

8

R82

1

R822

R823

R82

4

R82

5

R82

6

R82

7R

828

R829

R833

R83

4

R835

R83

6

R90

1

R906

R907

R908

R90

9

R91

1

R91

3

R91

4

R915

R91

6

R917

R918

R91

9

R921

R92

2

R923

R924

R92

5

R927

R931R932

R933

R934

R93

6

R937R93

9

R944

R950

R95

1

R953

R954

R960

RT

800

SH005

SH801

SH900

TP001

TP401

TP402

TP403

TP405

TP407TP408

TP409 TP410

TP411TP412

TP413

TP414TP504

TP600

TP601

TP602

TP603

TP604

TP605

TP934

TP936

U10

0

U10

5

U106

U107

U600

U601

U803U804

U806

U808

U809

U810

VR002

VR003

VR004

VR005

VR

106

VR107

VR601

Y600

OL o

MTH500 Detailed Service Manual - COMPONENT BOARD LAYOUTS

6 - 6 68P02963C70-O

Main Board (FLF9011A) - Side 2

8488996U01_P1

E00

2

E004

E00

3

E00

6

E00

5

J10

M001

M002

P15

M501

Q808

E810

E800

E80

7

E500

E501

TP002

C00

1

C00

2C

003

C004

C00

5

C006

C007

C00

8

C00

9

C01

0C

011

C01

2

C01

3C

014

C01

5

C016C01

7

C01

9C

020

C02

1

C02

2

C02

3C

024

C02

5

C02

6

C02

7C

028

C02

9

C049

C10

4

C105

C10

6

C121

C12

2

C20

0

C20

1

C203

C204

C205

C206

C401

C402

C403

C40

4

C40

5

C40

6

C40

7

C40

8

C40

9

C41

0

C412C413

C41

6

C417

C418

C41

9

C421

C42

2C

423

C424

C425

C426

C42

7

C42

8

C42

9

C43

0

C500

C50

1

C50

2

C50

3

C504

C505

C507

C508

C510

C51

2

C513

C51

4

C515

C51

6

C518

C51

9

C52

1

C522

C524C525

C526

C52

7

C52

8

C530

C53

1

C53

2

C53

3

C534C535

C53

6

C53

9

C54

2

C54

6

C547C549

C55

0

C55

1

C552

C55

3

C554

C55

5

C557

C56

0

C56

1

C57

2

C573

C574

C576

C577

C58

0

C59

0

C60

1

C611

C613

C61

5

C623 C62

4

C625 C626

C62

8

C641

C64

2

C64

4

C647

C64

8

C649C66

3

C800

C80

8

C81

1

C814C819

C82

1

C824

C827

C828

C829 C830

C832

C83

3

C835C838

C843

C844

C84

5

C846

C847

C848

C84

9

C85

0

C85

1

C85

2

C85

3

C85

4

C855

C85

6

C857

C859

C866

C867

C891

C894

C984

C1010

C10

11

C10

12

C1015

C10

21

C10

46

C1048

C1049

CR602

CR

603

D500

D801

E00

1E007

E10

2

E201

E203

E40

1

E80

6

FL500

FL

501

FL502

FL800

L50

0

L50

1

L50

4

L505

L508L512

L51

3

L518

L519

L520

L52

5

L53

0

L60

0

L601 L602

L800

L803

L805

L80

8

L809

L810

L811

L81

2

L81

3

L81

5

L817

L818

L81

9

L89

0

L931

L932

Q500

Q504

Q602

Q80

0Q805

Q80

6

R01

5R

016

R10

8

R119

R12

1

R401

R405

R40

7

R41

7

R500

R504

R512

R514

R515

R51

7

R519

R520

R52

1

R58

0

R649

R80

0

R80

4

R805

R806

R80

7

R80

8

R80

9

R812

R81

4

R81

6

R817

R819

R82

0

R83

2

R838

R899

R943

R94

5

R95

6

R961

R962

R963

R964

R965

R966

R967

R968

RT500

SH500

SH501

SH502

SH802

SH911

TP500

TP501 TP502

TP503

U104

U401

U402

U403

U40

5

U50

0U503

U504

U80

0

U80

1

U802

VR101

VR

102

VR104

VR105

Y501

SHOWN FROM SIDE 2

73B02964C24-O

73B02964C22-OO1 o

OL o

MTH500 Detailed Service Manual - Schematic Diagrams and Parts Lists

68P02963C70-O 6 - 7

Schematic Diagrams and Parts Lists

SCHEMATIC DIAGRAMS - MTH500 Keypad Board (FCN9090A)

6 - 8 68P02963C70-O

MTH500 Keypad Board (FCN9090A)

INT_EAR+_R

GREEN LED

GND contact

pinsGND

RESET

Connector GND pins

BACKLIGHT-

RESET

1

9

MK12

1+

VALUEC8

INT_EAR-_R

ON_OFF

PTT

ROW4

COL2

COL4

PHF_GND

PHF_MIC

PHF_SENSE

PHF_PTT

PHF_EAR

PHF_JACK

place close to

ROW2

ROW1

MENU

UP

GND

GND

GND

GND

GND

GND

FLEX to Display Board

BACKLIGHT-

RESET

CHIP SELECT

2.775_DISPLAY

RS

DATA

CLOCK

INT_EAR+

INT_EAR-_PHF_EAR

PHF

ON_OFF

PTT

GND

INT_MIC+

INT_MIC-

ROW1

ROW2

COL0

COL1

COL2

COL3

COL4

SEND/ENDSOFT KEY

LEFT

SOFT KEY

RIGHTDOWN MODE

* 7

80

4

5

1

2

369#

MUTE LEFT

40 pin Main To Keypad conn

RED LED

RIGHT

ROW0

BACKLIGHT+

GREEN LED

ROW3

ROW4

COL0

COL1

COL2

COL3

COL4

PHF_GND

GND

PHF_MIC

GND

GND

GND

GND

GND

GND

PHF_SENSE

GND

GND

INT_MIC+

INT_MIC-

CHIP SELECT

2.775_DISPLAY

RS

DATA

CLOCK

MIC

ROW0

BACKLIGHT+

RED LED

ROW3

ROW4

R3

68

J1-5

J1-3

J1-4

5GN

D1

1

GN

D2

6

R110

R29

R38

R47

U5

FLTR_EZAST33A

C12

C23

C34

C4

1G

ND

1

6G

ND

2

10R1

9R2

8R3

7R4FLTR_EZAST33A

U3

2C1

3C2

4C3

C45

P2-22

22

P2-9

7

P2-19

19

P2-1

1

P2-7

2

P2-3

3

P2-4

4

P2-2

5C4

1G

ND

1

6G

ND

2

10R1

9R2

8R3

7R4

FLTR_EZAST33A

U4

2C1

3C2

4C3

VALUE

C9

41

P1-42

42

38

P1-41

P1-37

37

P1-38

35

P1-36

36

P2-5

5

P1-35

10

P2-8

8

P2-11

11

P2-10

18

P2-17

17

P2-21

21

P2-18

P2-20

20

VR4VR3

VR1 VR2

0.

R6

R5 0.

0.R4

VALUE

C4

VALUE

C3

C2

VALUE

C1 33.u

5

P1-4

4

P1-6

6

P1-5

P1-11

J1-1

J1-2

N2

S1

A1 A2

Q1 Q2

S1

N1

S1

V1 V2

S1

T2

S1

U1 U2

9R2

8R3

7R4

S1

T1

2C1

3C2

C34

5C4

6G

ND

1G

ND

21

10R1

P2-24

24

U2

EZAST21

P2-23

23

C34

C45

GN

D1

1

GN

D2

6

R110

R29

R38

R47

U1

FLTR_EZAST33A

C12

C23

E1

BLM11B601S

C12

10.n1.u 180.p

C11

S1

X1 X2

C10S1

M1 M2W1 W2

S1

G1 G2

11

S1

P1-40

40

P1-11

26

P1-39

39

P1-25

25

P1-26

23

P1-24

24

P1-22

22

P1-23

20

P1-21

21

18

P1-20

2

P1-17

17

P1-18

15

P1-2

P1-16

16

P1-15

P2-15

15

P2-16

16

6

P2-14

14

13

P2-6

P2-12

12

P2-13

C7

VALUE

P1-19

19

BACKLIGHT+

BACKLIGHT+

14

P1-13

13

P1-12

12

P1-14

9

P1-7

7

P1-10

10

P1-9

3

P1-8

8

S1 S2

P1-3

L2

S1

R1 R2

S1

K1 K2

S1

L1

S1

J1 J2

S1

P2

S1

H1 H2

E1 E2

S1

P1

S1

D1 D2

S1

B2

S1

C1 C2

F1 F2

S1

B1

P1-34

34

S1

32

P1-33

33

P1-31

31

P1-32

29

P1-30

30

28

P1-29

P1-27

27

P1-28

MTH500 Detailed Service Manual - MTH500 Keypad Board (FCN9090A) Component Parts

68P02963C70-O 6 - 9

MTH500 Keypad Board (FCN9090A) Component Parts

When ordering component parts, the part number should be included.

CAPACITORS CONNECTOR and INDUCTORS RESISTORS

Ref # Part # Description Ref # Part # Description Ref # Part # Description

C1 2311049A30 Tant. chip 33µF J1 0985885K01 conn.J

C2 9186929J02 400&880MHz resonance Cap.

P1 0986926J03 conn.J

C3 9186929J02 Part not placed P2 0986966J01 conn.J INTEGRATED CIRCUITS

C4 9186929J02 400&880MHz resonance Cap.

C7-9 9186929J02 Part not placed GENERAL Ref # Part # Description

C10 2113743P01 Part not placed Ref # Part # Description U1 9186133U02 FLTR_EZAST33A

C11 2113928A01 1µF U2 9185759B01 EZAST21

C12 2113741F49 10nF MK1 5086346J02 Part not placed U3-5 9186133U02 FLTR_EZAST33A

DIODES RESISTOR

Ref # Part # Description Ref # Part # Description ZENER DIODES

R1-2 0662057C43 res_47 Ohm Ref # Part # Description

LED R3 0662057A21 res_68 Ohm VR1-4 4804645P09 Suppr. 6V

Ref # Part # Description R4-5 0662057A18 res_51 Ohm

D1 4886955J02 Part not placed R6 0662057B47 res_0 Ohm

D2-3 4886955J02 LED_grn S1 9997639U01 Keypad_22

D5 4886955J02 LED_grn

D6 4886955J02 Part not placed

D7-10 4886955J02 LED_grn

D13-14 4886955J02 LED_grn

D17 4886955J02 LED_grn

E1 2409134J04 BLM11B6016

SCHEMATIC DIAGRAMS - MTH500 LCD Board (FCN9797A)

6 - 10 68P02963C70-O

MTH500 LCD Board (FCN9797A)

RS

2.775_DISPLAY

CHIP SELECT

DNP DNP

73D02964C07-O

DNP DNP

BACKLIGHT+

BACKLIGHT-

RESET

CLOCK

DATA

DNPDNP DNP DNPDNP

RED LED

GREEN LED

INT_EAR+_R

INT_EAR-_R

ON_OFF

PTT

ROW4

COL2

COL4

GND

GND

FLEX to Keypad Board

2.775_DISPLAY

RS

CHIP SELECT

GND

GND

GND

BACKLIGHT+

BACKLIGHT-

RESET

DNP DNPDNPDNPDNPDNP

DNP DNP DNP DNP DNP

VOL DOWN

VOL UP

ON/OFF

PTT

ROW4

COL2

COL4

RED GREEN

GROUND CONTACTS

DNP DNPDNPDNP

DISPLAY

GND

CLOCK

DATA

C3

180.p

C2

180.p

P1-14

14

C1

180.p

P1-4

4

P1-1

1

P1-22

22

P1-16

16

P1-21

21

P1-20

20

18

P1-19

19

M4

P1-18

4A

J2-5A5A

J2-7A7A

J2-4A

2A

J2-1A1A

J2-6A6A

J2-2A

8A

J2-3A3A

J2-9A9A

J2-8A

BACKLIGHT+

BACKLIGHT+

BACKLIGHT+

C12

180.p 180.p

C11

180.p

C10 C9

180.p 180.p

C8 C7

180.p

P1-15

15

C6

180.p

12

P1-13

13

5

P1-6

6

P1-12

3

P1-2

2

P1-5

8

P1-7

7

P1-3

P1-9

9

P1-8

P1-10

10

P1-17

17

M5

P1-11

11

J2-5B

C16

180.p

J2-4B

J2-9B

J2-7B

TP7CLIP

CLIP1

CLIP1

TP6CLIP

CLIP1

TP4CLIP

CLIP1

TP5CLIP

CLIP1

TP3CLIP

CLIP1

TL

SU

1008

_RE

D

D12

TP2CLIP

TL

GU

1008

_GR

N

D11

3

A24

B1 1

B2 2

B2 2

S2

A1

S5

A13

A24

B1 1

S4

A13

A24

B1 1

B2 2

S3

A13

4 A2

B1 1

B2 2

J2-8B

J2-3B

J2-6B

J2-1B

J2-2B

180.p

C5

180.p

TP1CLIP

CLIP1

C4

10.n

C19

1.u

C18

BLM11B601SE1

24

180.p

C17

P1-23

23

P1-24

C15

180.p

C14

180.p180.p

C13

MTH500 Detailed Service Manual - MTH500 LCD Board (FCN9797A) Component Parts

68P02963C70-O 6 - 11

MTH500 LCD Board (FCN9797A) Component Parts

When ordering component parts, the part number should be included.

CAPACITORS RECEPTOR RESISTORS

Ref # Part # Description Ref # Part # Description Ref # Part # Description

C1-17 2113743p01 Part not placed

C18 2113928A01 1µF GENERAL

C19 2113741F49 10nF Ref # Part # Description INTEGRATED CIRCUIT - AUDIO

M4-5 3986295T01 Contact Ref # Part # Description

S2-5 4086218A02 Switch

TP1-7 4209080u02 Part not placed

DIODES RESISTOR

Ref # Part # Description Ref # Part # Description

LED

Ref # Part # Description

D11 4886955j02 LED_grn

D12 4886955j01 LED_red

CONNECTOR and INDUCTORS

Ref # Part # Description

E1 2409134j04 Ind. chip fer.

J2 0988189K02 conn_J

P1 0986966j01 conn_J

SCHEMATIC DIAGRAMS - MTH500 MAIN Board (FLF9011A)

6 - 12 68P02963C70-O

MTH500 MAIN Board (FLF9011A)

5V_RF

ANT_EN

LO_Driver_En

LO_Mixer_En

PA_Bias

PA_TEMP

RAW_B+_RF

RESET

16.8_MHz_CLK

RF

79B02964C09-O

SHEET 1 OF 9

SPIA_CS2_ODCT

SPIA_MISO

SPIA_MOSI

SYNTH_CS

TCXO_WARP

TETRA_MAIN_VCO_ON

V3_2.775

V4_2.775V_RF

VREF1_2.775V

WPIC_OSC_EN

WPIC_SRD

WPIC_SSI_FSYNCH

WPIC_STD

WPIC_TXCLK

WPIC_TXE

DIGITAL

WPIC_STD

WPIC_TXCLK

WPIC_TXE

16.8_OR13_MHz_CLK

5V_RF

ANT_EN

LO_Driver_EN

LO_Mixer_EN

PA_BIAS

PA_TEMP

RAW_B+_RF

RESET

RF_TEMP

RX_ACQ

SPIA_CLK

SPIA_CS0_WPIC

RF_TEMP

RX_ACQ

SPIA_CLK

SPIA_CS0_WPIC

SPIA_CS2_ODCT

SPIA_MISO

SPIA_MOSI

SYNT_CS_

TCXO_WARP

TETRA_MAIN_VCO_ON

V3_2.775V

V4_2.775V

VREF1_2.775V

WPIC_FSYNC

WPIC_OSC_EN

WPIC_SRD

MTH500 Detailed Service Manual - MTH500 Main RF Block

68P02963C70-O 6 - 13

MTH500 Main RF Block

SHEET 2 OF 9

VA Connector

N/U

N/U N/U

N/U

N/U

1

TP828

CHTSTP

1

79B02964C09-O

Digital Test Point Shield

Antenna Contacts

C205

270.p

VALUE

TP825

CHTSTP

L931

1.u

E201

CHTSTP

1

TP808

CHTSTP

1

TP817

CHTSTP

1

TP804

CHTSTP

1

TP811

CHTSTP

1

TP823

CHTSTP

1

TP824

CHTSTP

1

TP815

CHTSTP

1

TP818

CHTSTP

1

TP821

1

TP805

CHTSTP

1

TP806

CHTSTP

1

TP830

CHTSTP

1

TP819

CHTSTP

1

TP822

CHTSTP

C1046

47.0U

M500

SHIELD

SH912

1

M501

TP934

1

GND

PLATED_HOLE5_2X7_6

U810

1

GND

J700-4

4

PLATED_HOLE5_2X7_6

1

J700-3

3

J700-2

2

J700-1

PA_BIAS

PA_TEMP

RAW_B+_RF

RX_TETRA

SPI_CLK

SPI_MISO

SPI_MOSI

TCLK

TCLKB

TETEA_TX_LO TETRA_ANT

TSLOT

TSLOTB

VCNTO

offset_vco

2.775V_RF

5V_RF+

ANT_EN

ASW

GND

LO_Driver_EN

LO_Mixer_EN

ODCT_CS

OD

CT

_RE

SE

T

OUTI

OUTIB

OUTQ

OUTQB

C206

CHTSTP

TP802

100.n

100.n

C204

C201

100.n

270.p

C200

C203

270.p

RX_2nd_LO

SF_OUT

SPIA_CLK

SPIA_CS3_SYNT

SPIA_MOSI

TETRA_2nd_LO_Enable

TETRA_MAIN_VCO_ON

TETRA_RX_LO

TETRA_TX_LO

offset_vco

offset_vco_En

TSLOT

TSLOTB

TXCLK

TXE

V3

VCNTO

VREF1_2.775V

WPIC_CE

WPIC_RESET

2.775V_RF

5V_RF+

ADAPT

CPGITR

Ded_Synt_Ref

GND

PRSCINPRSCIN

RF_TEMP

RX_2nd_LO

RX_ACQ

RX_TETRA

SF_OUT

SPI_CLK

SPI_IN

SRD

SSI_FSYNCH

STD

TCLK

TCLKB

TCXO_WARP

TETRA_2nd_LO_Enable

TETRA_RX_LO

2.775V_RF

5V_RF+

ADAPT

ASW

CLK_OUT

CPGITR

Ded_Synt_Ref

GND

OSC_EN

OUTI

OUTIB

OUTQ

OUTQB

E203

VALUE

CHTSTP

TP850

TP833

CHTSTP

1

TP812

CHTSTP

1

CHTSTP

TP809

1

CHTSTP

TP813

1

TP829

CHTSTP

1

TP814

CHTSTP

1

CHTSTP

1

TP803

CHTSTP

1

832

CHTSTP

1

RF_TEMP

16.8_OR13_MHz_CLK

SPIA_CS0_WPIC

WPIC_TXE

WPIC_STD

WPIC_SSI_FSYNCH

WPIC_TXCLK

WPIC_SRD

RX_ACQ

WPIC_OSC_EN

TP820

LO_Mixer_EN

PA_TEMP

V4_2.775V_RF

5V_RF

V3_2.775

ANT_EN

VREF1_2.775V

TCXO_WARP

RESET

SYNTH_CS

TETRA_MAIN_VCO_ON

LO_Driver_EN

SPIA_CS2_ODCT

PA_BIAS

RAW_B+_RF

SPIA_MISO

SPIA_CLK

SPIA_MOSI

ReceiverTETRA Transmitter

Frequency Generation

SCHEMATIC DIAGRAMS - MTH500 Transmitter Block (Sheet 1 of 2) )

6 - 14 68P02963C70-O

MTH500 Transmitter Block (Sheet 1 of 2) )

6.8n6.8n 6.8n

CMY210

DG0106A01

380Mhz

300300

18

1.8p

8V

DD

VC

C

49USUB

ODCT_H19GED

U803

23VSSR

17V

OF

F

6SPISB

5SPIO

4

14V

CP

53V

CC

U

22V

CC

O34

VC

CD

63V

CC

2

40

RFOUTB52

RFOUT

36RFINB

37RFIN

20

30TST4

29TST3

27TST2

26TST1

2

13LSUB

47LP2QB

48LP2Q

54

SPII

3SPIC

10SLTB

9SLT

51

LP1IB44

LP1I

45LOQB

46LOQ

56

OVCOB

19OVCO

25MVCOB

24MVCO

MRSTB

GN

DU

21G

ND

O35

GN

DD

62G

ND

2

39

LP2IB55

LP2I

41LP1QB

42LP1Q

43

2.775V_RF

CAPR

32CAPO

31CAPM

58BINQB

R824

18

59BINQ

L1T0

L1T1(LO Line Up)

ODCT Shield

ODCT Bottom Shield

60BINIB

61BINI

6.8n

1

2

N/U

N/U

N/U N/U

N/U N/U

N/U

6.8n N/U

28ASW

GN

D

15G

CP

33DSUB

7D

GN

D

16CPO

12CLKIB

11CLKI

1CAPRB

64

LOIB

57LOI

38LCAP

2.5V_TX

C850

4.3p

390.p

18G

OF

F

50

18.0n

18

R823

C862

R82118

GND GND GND

GND

GND

270.p

C805

5V_RF+

6.8NF

C880

C812

270.p

C874

100.n 100.n 100.n

C870

GND

GND

2.775V_ODCT

GNDGND

C868

270.p

C802

GND GND

C809

GND

270.p

R806

1.2K

GND

R812

270

100n100n

L805

270.p

L803

R817

C81451.

51.

R816

270.p

C819

270.p

C811

270.p

GND

GND

GND

GND

C818

270.p

C820

GND

C863

C815

270.p

C816270.p

C864

GND

C882

4.7n

GND

C881

4.7nC861

18.0n

18

R822

R808

300

GND GND

300

R819

R800

18

GND

R838

150.

R833

GND

R834

51.

R836

R814

C849

2.4p

C851

3.p

39n

L807

SLC_045P

IN

ISOL

OUT_0

OUT_90

GND

U801

GND

C877

2.775V_ODCT

GND GND

C878

C871

GND GNDGND GND

2.775V_ODCT

100.n

C869

100.n

C876

100.n

C875

100.n

L811

8.2n

GND

2.775V_RF

L813

22.n

GND

15.p

C843

12.p

C845C854

1.n

GND

1.n

510 C853

R807

GND

8.2p

C847

270.p

C821

100.p

C894C844

10.p

12.p

L810C846 12n

12n

L809

L800

68nC800

82.p

U800

2G

ND

1

5G

ND

2

6IF_RF

3LO_IN

1RF_IF

4

VDD

R804 C859

GND

2.2K

GND

GND

8.2

R820

L808

22n

DS

S1

2.775V_RF

2.5V_TX

Q808

Q800

E800

BLM10B601SDP

GND GND

47K

RT800

C828

270.p

C857

1.n

C827

GND

C856

GND

270.p

C855

GND

1.n

1.n 270.p

C824

BA_IN3

1B_IN

GN

D1

2 7G

ND

2

8NC1

6U_OUT

GND

5V_RF+

GND

2.5V_TX

U804

C1033

2.775V_ODCT

GND

C1032

270.p

GND

270.p

270.p

C1031

1

GND

BLM10B601SDP

L922

1

GND

SH802

SHIELD

100.n

GND

SH801

SHIELD

6OUT

7OUT_GND

GND

C1020

1G

ND

15

GN

D2

4G

ND

38

GN

D4

2IN

3IN_GND

GND

FL800

GND

C1009

10u

C704

BLM11B601S

E806

BLM11B601S

E803

GND

56n

L815

470.p

C833

R805

560

C834

270.p

GND

C885

100.n

8.2n

L812

270.p

C1050C831

R964

2K

330

GND

R961

R963

4.7K

GND

R962

4.7K

Q805

22n

L926

GND

2.775V_RF

LO_Driver_EN

offset_vco

LO_Mixer_EN

5V_RF+

TCLKB

ASW

GND

OUTIB

SPI_CLK

SPI_MOSI

SPI_MISO

TETEA_TX_LO

2.775V_RF

OUTI

ODCT_CS

ODCT_RESET

TSLOTB

OUTQ

TCLK

TSLOT

OUTQB

PA_TEMP

10K

10K

10K10K

MTH500 Detailed Service Manual - MTH500 Transmitter Block (Sheet 2 of 2)

68P02963C70-O 6 - 15

MTH500 Transmitter Block (Sheet 2 of 2)

PA Shield

Ant. SW Shield

79B02964C09-O

SHEET 3 OF 9

N/U

N/U

13p

2.2n

6.8n

N/U N/U N/U

200 301

215

56p

7.5p

390p

N/U

9.1p

120n

22n

6.8p

3p

15n

4.7p

68p

5.6p

ISO-UB1103-11

GND

1OUT

GND

C822

1.n

GND

R954

C1045

1K

GND

SH911

SHIELD

1

GND

R960

C848

L923

BLM10B601SDPBLM10B601SDP

L919

GNDGND

L918

C1026

270.p270.p

C1025

100.n

C1024

GND

100.n

C1023

1.u

C1022270.p

GND

5.6n

L921

C1027

GND

13.85n

L920

GND

C1029

C1030

GND

C1028

GND

GND

56.n

L916

L917

RF_IN6

RF_OUT114

RF_OUT213

RF_OUT312

VBIAS16

VCC

1

VREG8

GND

LTUNE2

NC1010

NC1111

NC1515

NC33

NC77

NC99

Q1C4

RF2175

U809

GN

D1

5 17G

ND

17

R899

100.K

GND

GND

E810

C1021

270.p

GND

BLM10B601SDP

SH800

SHIELD

1

GND

C1015

C1014

GND

5.6p

GND GND

270.p

C1011

3.9p

C1010

13.85n

C1012

GND

L890

5V_RF+

GND

C1004

100.n

C899

270.p

Q807

GND

GND GND GND

100.u

C703C702C701

100.u

4COUP

1IN

OHM_503

2OUT

100.u

GND

COUP_0902BW

U806

C897

33.p

E808

E809

BLM11B601S

GND

BLM11B601S

GND

C832

51

R826

GND

E807

BLM10B601SDP

GND

R818

150

C835

18.p150

R809

GND

D801

L818

GND

GND

OUT

2

C867

2.7n

E801

FM60RGND3

IN

1

R832

100.

A1

A2

K1

K2

U802

Q806

GND

C891

270.p

270.p

C830

C838

GND

L819

C829

GND

270.p

C866

270.p

270.p

C825

GND

1.n

C823

GND

RAW_B+_RFRAW_B+_RF

R828

R827

270.p

GND

C898

GND

C888

2.775V_RF

270.p

FL801

GN

D1

3 4G

ND

2

2IN

180.p

C808

GND

L817

C852

180.p

C817

GND

39

R825

R815

150

ANT_EN

VCNTO

RX_TETRA

RAW_B+_RF

PA_BIAS

TETRA_ANT

10K

10K

10K

10K

10K

10K

10K

2

SCHEMATIC DIAGRAMS - MTH500 Receiver Block (Sheet 1 of 2)

6 - 16 68P02963C70-O

MTH500 Receiver Block (Sheet 1 of 2)

Enviorement Temp. Sens.

GPO5/DCLICP

should be 75n

Pins crossed for better routing

RX Front End Shield

N/U

1

2

3

4

5

6

DG0106A01

39n

47n

270p

22n

3.6p0380MHZ-BPF

N/U N/U

98A02

C524

L932

270.

R965

C1048

270.p

L530

R580

220.

C590

270.p

SH501

SHIELD

1

2.775V_WPIC

C510

270.p

C500

270.p

22n

L525

R519

R945

470470

R517

1.n

2.775V_RF

Q504

VREF1_2.775V

C513

470.p

C984

R943

560

D500

7OUT_GND

C574

270.p

1G

ND

15

GN

D2

4G

ND

38

GN

D4

2IN

3IN_GND

6OUT

FL500

E501

BLM10B601SDP

47K

RT500

E500

BLM10B601SDP

5V_RF+

V3

C514

270.p

2.775V_RF

2.775V_RF

2.775V_RF

Q500

6

GN

D1

GN

D2

2

8IN

4OUT

FL501

C576

C550

1.n

L500

L518

33n

6.8p

C521

C532

R500

1.K

C505

1n

C553

100.0n

C507

GN

D1

2

GN

D2

54

RF0UT

1RFIN

VPD3

1.n

RF2361U500

56.n

L508

12.n

L513

C528

C522

8.2p

68.n

L505

100.p

1.n

C551

VD

D4

270.p

C512

U504

GN

D1

2

GN

D2

5

IF_RF6

LO_IN3

RF_IF1

12.n

L512

CMY211

C531

12.p

C525

6

OUT4

IN1

4.7n

FL502

GN

D2 3

GN

D1

GN

D2

5

GN

D3

C539

1.8p

470.n

L504

1.8p

5V_RF+

V3

RF_TEMP

VREF1_2.775V

RX_TETRA

GND

2.775V_RF

PRSCIN

ADAPT

CPGITR

TETRA_RX_LO

10K

10K10K

10K

10K

10K

10K

10K

MTH500 Detailed Service Manual - MTH500 Receiver Block (Sheet 2 of 2)

68P02963C70-O 6 - 17

MTH500 Receiver Block (Sheet 2 of 2)

470.K

TP504

10.n

N/U

N/U

5

6

79B02964C09-O

SHEET 4 OF 9

4GPO6/DCLICIN

Tetra RX Mixer + 2nd LO Enable

3

2

1

RX IF Shield

Warp from WPIC

WPIC Shield

N/U

N/U

N/U

C516

100.n

7

8

6

5

C530

10.n

10.n

C534

VAGBYPE3

VBLINL5

VCNTOJ6

VCOCT1K1

VCOCT2J2

XTALBASEK6

XTALEMITL6

J8XTALWARP

D9TESTD_GP04

TME11

A11TSLOT

TSLOTBA10

K11TXCLK_SCK

TXE_TXKEYH8

TXKEYOUTF2

VAGE1

SRDJ11

STDK10

TCAPMC7

TCAPPB8

TCLKB11

TCLKBC10

TEST1D4

TEST2D3

SERIALGNDL8

SERIALVCCH11

K4SFBYP

SFGNDK3

L4SFOUT

SFVCCJ4

SPICLKK9

SPIIL9

REFPLLVCCG10

REFVCCB10

RFA0B1

RSTBE10

H9RXACQ

RXCLKJ10

RXFSL11

SATDETH1

PREINGBA3

PREINIB4

PREINIBA4

PRSCING1

QGNDC11

QVCCD10

REFGNDB9

REFPLLGNDH10

PLLCPF11

PLLCPVCCF9

PLLEMITG9

PRAGNDA2

PRAGNDDIGA1

C3PRAVCC1

PRAVCC2B5

PREINGB3

OUTIBA9

A8OUTQ

OUTQBC8

D6PKGGND1

F4PKGGND2

PKGGND3F8

PKGGND4H6

G11PLLBASE

MNCPGNDK2

MNCPVCCH4

NGNDD11

E9NVCC

OSCENBJ9

OSCGNDK5

OSCVCCJ7

OUTID8

J1GPO1

GPO2H2

GPO3B7

LOGICGNDL7

LOGICVCCK7

D1LOIN

G2MAINGND

MAINVCCH3

C6DCLQCIN

A6DCLQCP

DETSWJ3

DMCSL10

DMXGNDB2

DMXGNDDIGC2

DMXVCCC1

D2DMXVCCDIG

K8CEX

CLKOUTF10

C9CLKSEL

L3CPGITR

L2CPGT

CREFA7

DCLICINC5

DCLICPB6

ADAPTL1

AGCF3

AGCDRIVEG3

AGCGNDE2

AGCVCCF1

ASWJ5

BBFGNDA5

BBFVCCC4

9

9

U503

WPIC27C02

1

2

10uF

C561

100.n

C555

5

4

3

2

6

7

2.775V_WPIC

2.775V_WPIC

2.775V_WPIC

2.775V_WPIC

2.775V_WPIC

2.775V_WPIC

L519

220.n

L520

220.n

10.p

C527

C560

C526

10.p

10uF

3.3n

C542

100.n

C547

C502

100.n

100.n

C508

100.nC549

C535

100.n

C572

100.n

100.n

C501

C504

100.n

C515

100.n

100.K

R521

TP502

C580

1.n

V_CONT1

100.K

R520

Y501

TCXO_16.8MHZ

GND

2

OUTPUT

3

VCC

4

TP500

TP501

FREQ

51

R518C545

5.1p

3

4

C519

100.n

5

4

3

2

7

8

2.775V_WPIC

2.775V_WPIC

2.775V_WPIC

2.775V_WPIC

2.775V_WPIC

2.775V_WPIC

8

6

R968

22

R967

C1049

270.pR966

39

R956

0.

1

SH502

SHIELD

1.n

C552

33.

R504

100.n

C573

C554

47.n

C518

100.n

3

2

1

7

6

5

4

C533

C577

10u

VREF1_2.775V

10n

C503

R515

100K

R514

5.1K

R512

100K

1

2.775V_WPIC

5V_RF+

V3

TP503

SH500

SHIELD

C557

15n

C546

1.5p

C536

22p

470.n

L501

TCXO_WARP

8

SF_OUT

Ded_Synt_Ref

RX_ACQ

WPIC2(1:9)

SRD

SSI_FSYNCH

TETRA_2nd_LO_Enable

OSC_EN

WPIC_RESET

WPIC_CE

SPI_CLK

SPI_IN

STD

TXCLK

TXE

ASW

TCLKB

VCNTO

OUTIB

OUTI

WPIC1(1:8)

TSLOTB

TSLOT

TCLK

OUTQB

OUTQ

RX_2nd_LO

CLK_OUT

SCHEMATIC DIAGRAMS - MTH500 Frequency Block Tetra Main VCO (Sheet 1 of 2)

6 - 18 68P02963C70-O

MTH500 Frequency Block Tetra Main VCO (Sheet 1 of 2)

TETRA Main VCO

N/U

Main VCO Shield

N/U

3382022n

12p

3.6p

100n

GND

C955 D907

C937

1

GND

GND

SHIELD

SH900

10n18.pC980

L907

GND

100p

C915

C942

15p

R919510.

GND

C932

5V_RF+

GND

GND

SF_OUT

SF_OUT

2.775V_RF

Q907

GND

GND GND

GND

GND

GND GND

GND

GND

C938

1.5K

R933C939

4.3p

GND

100.p

C909

270

R921

Q903

GND

R924

R932

68

R914

1.3K

GND

3.6K

100.p

C906

51

R937

C910

GND

GND

100.p

R944

22.

R927

C933

22

5.6p

R918

180

R917

75

100n

C958

GND

R913

C957

4.7n

R911

2.2K

22.0n

C961

C929

5.1p

L903

390n

390nL913

L912

390n5.1p

C931

15.p

C927

C930

100p

100p

C905

C904 C901

270.p 100.n

R901

47.K

R925

R936

100.

R923

68.

R934

1.K

R931

8.2K

FREQ

RESONATOR

Y901

Q900

PRSCIN

TETRA_MAIN_VCO_ON

SF_OUT

2.775V_RF

5V_RF+

GND

Q904

ADAPT

CPGITR

TETRA_TX_LO

TETRA_RX_LO

10K

10K

10K

10K

MTH500 Detailed Service Manual - MTH500 Frequency Generation Block, Offset VCO (Sheet 2 of 2)

68P02963C70-O 6 - 19

MTH500 Frequency Generation Block, Offset VCO (Sheet 2 of 2)

TETRA - Rx 2ND LO

GPO6

Offset VCO

Dedicated Synth. Shield

N/U

79B02964C09-O

SHEET 5 OF 9

39p

18p

L930

390n

GND

TP936

TP_SMD_40X40

1

GND

R953

100.

GND

SHIELD

SH901

1.n

C970

150.

R951

510.

GND

R950

C971

1.n

6.8n

39.p

C1016

GND

C948

33.nC903

R915

4.7K

1.n

C865

GND

1.n

GND

18.

GND

GND

C916

R908

18.

R9071.n

C966

NC3

NC421 8

OSC_IN

24V

CC

1

23V

CC

2

2V

P1

22V

P2

GND

GN

D1

7G

ND

210

GN

D3

16G

ND

419

GN

D5

15LE

NC11

9NC2

13

DATA

20DOIF

3DORF

17FINIF

18FINIF2

6FINRF

5FINRF1

11FOLD

4

GND

LMX2332LSLB

U808

12CLK

14

C968

GND

C9671.n

GND

SF_OUT

GND

270.p

Q804

GND

L80668.n

39.p

C890

R803

2.2K

GND

D800

68.p

C887

0.01UF

C879

GND

1.n

GND

GND

C883

GND

C873

100.n

68.n

L816

GND

GND

22.p

C842

33.n

L801

GND GND

GND

C840

C88633.p

C837

68.p

C841

68.p

C839

4.7K

R801

2.2K

R802

510.

R835

Q801

100

R810

GND

BLM10B601SDP

E901

GND

GND

100.p

C946

270.p

C954

1.n

C953

5V_RF+

GND

2.775V_RF

SF_OUT

D902

Q910

C951

12.p

C962

GNDGND

GND

GND

GND

20.p

GNDGND

GND

C902

100.n100.

R939

C940

2p

33n

L906

R922390

2.2K

R916

4.7K

8.2p

C920

11K

R906

R909

8.2K

R829 C895

3.3n

22.n

C860

C960

C959

1.n

7.5p C919

15.p

C92110.p

10.p

C922L905

47n

Q905

offset_vco_En

offset_vco

SPIA_MOSI

TETRA_2nd_LO_Enable

Ded_Synt_Ref

RX_2nd_LO

SPIA_CS3_SYNT

SPIA_CLK

SCHEMATIC DIAGRAMS - MTH500 Main Digital Block (Sheet 1 of 2)

6 - 20 68P02963C70-O

MTH500 Main Digital Block (Sheet 1 of 2)

WPIC_TXE

WPIC_DSPCLK

WPIC_FSYNC

WPIC_SRD

WPIC_STD

RX_ACQ

WPIC_OSC_EN

RAW_B+_RF

SPIA_CLK

SPIA_MOSI

SPIA_MISO

N.C. RESET TETRA

DATA TETRA

CLK TETRA

COL0

COL1

COL2

COL3

COL4

ROW0

ROW1

ROW2

ROW3

ROW4

PA_TEMP

TETRA SIM

SYNT_CS_

RF_TEMP

DATA

RESET

CLOCK

TETRA_RESET

TETRA_CLK

TETRA_DATA

TETRA_VSIMTETRA_VSIM

PTT/PHF_PTT

PHF_MIC

MIC-

MIC+

Backlight-

GRN_LED

RED_LED

ON/OFF

DATA

CLOCK

PHF_GND

GND

GND

GND

GND

GND

GND

RESET

PHF_SENSE

EARPIECE+

PHF_EAR/EARPIECE-

Backlight+

V3_2.775V

DISPLAY_RS

CHIP_SEL

MAIN TO KEYPAD

40 pin connector

COL0

COL1

COL2

COL3

COL4

ROW0

ROW1

ROW2

ROW3

ROW4

GND

GND

GND

GND

GND

SPIA_CS0_WPIC

SPIA_CS2_ODCT

PA_BIAS

LO_Mixer_EN

LO_Driver_EN

TETRA_MAIN_VCO_ON

ANT_EN

16.8_OR_13MHz_CLK

RESET

J002

Contact GND

Contact GND

1

2

3

4

5

6

7

8

9

10

11

12

13

14

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

46

47

44

45

43

DNP

DNP

DNP

DNPDNPDNP

DNP

DNP

DNP

DNP

DNP

DNP

DNP DNP DNP DNP DNP DNP DNP DNP DNP DNP DNP

N/U

41

P15-42 42

3

12

VSIM

P15-41

12

VR005

VR0043

R026

05

6

VREF2_2.775V

7

2

3

1

C043 C044

22p 100.p

R020 47

R021 100.

22.p

C042

R019

75

E003 BLM10B601SDP

E004 BLM10B601SDP

E005

BLM10B601SDP

E002

BLM10B601SDP

E006

BLM10B601SDP

E007

BLM11B601S

1

E001

BLM11B601S

100n

VSIM

TP935

9

C041

P15-11 11

P15-9

R016

R015

22.

C017

22.

180.p180.p

C016

33.p33.p

C002 C003

180.p

C029

180.p

C028

180.p

C027C026C025

180.p180.p180.p

C024

180.p

C023

180.p

C022

180.p

C021

180.p

C015

180.p

C014

180.p

C013

180.p

C011 C012

180.p

C010

180.p180.p 180.p

C009C007 C008

180.p180.p

C006

180.p

C005

180.p180.p

C001 C004

180.p

C020

180.p

C019

V3_2.775V

P15-1 1

P15-8 8

P15-2 2

12

P15-7 7

P15-13 13

P15-12

34

P15-17 17

P15-38 38

P15-34

6

P15-39 39

21

P15-6

18

P15-20 20

P15-21

P15-10 10

P15-18

P15-4 4

P15-36 36

P15-35 35

P15-19 19

40

P15-16 16

P15-37 37

P15-40

3

P15-5 5

P15-22 22

P15-3

15

P15-14 14

P15-33 33

P15-15

P15-32 32

P15-28 28

P15-30 30

P15-26 26

P15-31 31

P15-24 24

P15-29 29

25

P15-27 27

P15-23 23

P15-25

12K

1

TP904

1

R003

WPIC_STD

WPIC_TXCLK

WPIC_TXE

TP908

1

TP903

SPIA_MOSI

SPIB_CLK

SPIB_CS1_DISPLAY

SPIB_CS2_GCAP3

SPIB_MISO

SPIB_MOSI

SW

B+_

EN

SYNT_CS_

TCXO_WARP

TETRA_MAIN_VCO_ON

TX_DETECT

VA

_EN

VIBR_EN

WPIC_FSYNC

WPIC_OSC_EN

WPIC_SRD

RS232_DSR

RS232_DTR

RS232_RI

RS232_RTS

RS232_RX

RS232_TX

RX_ACQ

SIM_CLOCK

SIM_DATA

SIM_POWER

SIM_RESET

SOFT_TURN_OFF

SPIA_CLK

SPIA_CS0_WPIC

SPIA_CS2_ODCT

SPIA_MISO

KP_ROW0

KP_ROW1

KP_ROW2

KP_ROW3

KP_ROW4

LO_Driver_En

LO_Mixer_En

LV_DETECT

MOD

MUX_CTRL

OPT_SEL_1

OPT_SEL_2

PA_Bias

PTT

RESET_OUT

RS232_CTS

RS232_DCD

ANT_EN

AU

DIO

_SE

NS

E

BAT_DATA

DISPLAY_RS

GCAP3_AD_TRIGGER

GCAP3_DCLK

GCAP3_FSYNC

GCAP3_INT

GCAP3_RX

GCAP3_STANDBY

GCAP3_TX

KP_COL0

KP_COL1

KP_COL2

KP_COL3

KP_COL4

TP923

1

TP914

1 16.8_MHz_CLK

32KHz_CLK1

TP917

1

TP924

1

TP919

1

TP911

TP918

1

TP928

1

1

TP922

1

TP921

1

1

TP909

1

TP913

TP912

1

TP929

1

TP920

TP930

1

6.2V

VR002

TP925

1

TP915

1

1

TP932

1

TP933SYNT_CS_

TCXO_WARP

RF_TEMP

ANT_EN

WPIC_FSYNC

WPIC_SRD

SPIA_MISO

SPIA_CS2_ODCT

SPIA_CS0_WPIC

LO_Mixer_En

TETRA_MAIN_VCO_ON

PA_Bias

LO_Driver_En

16.8_MHz_CLK

WPIC_TXE

WPIC_TXCLK

WPIC_STD

RX_ACQ

WPIC_OSC_EN

RESET

RAW_B+_RF

SPIA_CLK

SPIA_MOSI

PA_TEMP

DISPLAY

KEYPAD

TCXO

SPIA I/O

WPICI/O

WPICEPPI

SIMReader

PTT

CE Bus I/O

GCAP3CODECINTERFACE

GCAP3I/O

RS232I/O

MISCI/O

BATTERY ID

Bo

tto

m C

on

nec

tor

SPIBI/O

DIGITAL / KEYPAD / LEDBLOCK

VIBRATOR

MTH500 Detailed Service Manual - MTH500 Main Digital Block (Sheet 2 of 2)

68P02963C70-O 6 - 21

MTH500 Main Digital Block (Sheet 2 of 2)

Internal Speaker

Data

Batt_Ground

Thermistor

Batt_B+

Ext_B+ from Charger

RX_CODEC

RAW_B+

TX_CODEC

BATTERYCONTACTS

OPT2

RXD

DCD_MUTE

ASEL0

ASEL1

OPT1

ASEL2

AUDIO_OUT

TXD

BATT_FDBK_AD

EXTB+

BATT_FDBK

CE_ON_OFF

SWB+_EN

HKSW_CTS

USB_PWR

AUDIO_IN

AUDIO_SENSE

VIBRATOR

HW_ID = 301 for Freda R1

VREF1_2.775V

5V_REF

V4_2.775V

V3_2.775V

HW_ID2HW_ID1HW_ID0

VA_EN

DNP

USB_VCC_SW

DNP

16.8MHz

DNP

1

2

3

4

5

6

7

8

9

10

11

12

13

14

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

46

47

44

45

43 79B02964C09-O

SHEET 6 OF 9

DNP

DNP DNP

22K 33K 33K

2K 0 1K

DNP

1

P1-1

4

P1-4

M006

2

P1-2

M001

3P1-3

C050

BLM10B601SDP

E010

270.p

R027

470.K

C04933p

FM60R

E009

GND

3

IN1

OUT2

FM60R

E008

GND3

1INOUT

2

C0481n

G1

G2

S1

S2D001

Q002

D1

D2

1.KR025

SH007Linear_Main_to_Keypad

1

GND_EDGE_3TP004

1

GND

GND_EDGE_4TP005

1

GND

GND_EDGE_1TP002

1

GND

GND_EDGE_2TP003

1

GND

SIM1 Between SIM’sSH005

1

1

REDCAP2

SH004

1

Switching Reg.

SH001

1

GCAP3

SH003

TP001

VTS_2.3V

R012

R001

R004

M002

M005

VTS_2.3V VTS_2.3V

VREF1_2.775V

TP902

1

VR003

7.5VC037

180p

C038

33p

C036

33p

C035

33p

BATT_FDBK

BATT_FDBK_AD

CE_ON_OFF

DCD_MUTE_FS

EXT_B+

HKSW_CTS

OPT1

OPT2

RAW_B+

RxD_USB-

SWB+_EN

TxD_USB+

USB_PWR_RTS_IGN

USB_VCC_SW

VA_EN

R009

ASEL0_DSR_STDA

ASEL1_DTR_SRDA

ASEL2_RI_SCK

AUDIO_IN

AUDIO_OUT

AUDIO_SENSE

TP906

1

1

V4_2.775V

TP905

1

5V_RF

R008

V3_2.775V

TP907

TxD_USB+

USB_PWR_RTS_IGN

USB_VCC_SW

VA_MIC

VA_SPKR

VIB_VCC

WDI

39

RED_LED

RS232_RTS

RS232_RX

RS232_TX

RX

RxD_USB-

SPIB_CLK

SPIB_CS2_GCAP3

SPIB_MISO

SPIB_MOSI

SPKR+

SPKR-

STANDBY

TE

TR

A_R

F_P

A_T

HR

M

TX

TX_DETECT

GRN_LED

GS

M_R

F_P

A_T

HR

M

HW_ID0

HW_ID1

HW_ID2

INT_EAR+INT_EAR-_PHF_EAR

INT_MIC+

INT_MIC-

LV_DETECT

MOD

MUX_CNTL

ON

PH

F_G

ND

PHF_MIC

PHF_SENSE

16.8MHzCLK_IN

32KHz

AD6_WARP

ADTRIG

AUDIO_OUT_ON_OFF

BA

T

BA

TT

_FD

BK

BATT_TERM_VCC

BATT_THRM

Backlight-

CHARGER_ID

DCLK

EX

T_B

+

FSYNC

GCAP3_INTERRUPT

GCAP3_VSEN1

RAW_B+

180.p

R010

4.7K

V3_2.775V

C033

R013

C031

180p 180p

R014

C032

10.KR011

V4_2.775V

5V_RF

VREF1_2.775V

V3_2.775V

AUDIO / DCBLOCK

BOTTOM CONNECTOR BLOCK

SCHEMATIC DIAGRAMS - MTH500 Audio & DC Block (Sheet 1 of 2)

6 - 22 68P02963C70-O

MTH500 Audio & DC Block (Sheet 1 of 2)

STANDBY

BATT_TERM_VCC

HW_ID1

HW_ID2

TETRA_RF_PA_THRM

GSM_RF_PA_THRM

RxD_USB-

TxD_USB+

USB_PWR_RTS_IGN

RS232_RX

USB_VCC_SW

GCAP3_VSEN1

WDI

RS232_RTS

BAT

V4_2.775V

TP605

35

36

37

38

39

40

For P2.0 only

P2.6

TX

EN

B

VM

VP

SLUMP DETECTOR

Dual band

Dual band

DNP

BLM21P300S

DNP

DNP

ON\32kHz

MU

X_C

TL

AD

7

AD

8

RE

F1_

VC

C

RE

F1

RE

F1

L2

U600

GCAP3

C732KHZ

L3A1L_IN

4.7u

C653

ON3

Dual band

USB_PWR 3.3V

1

2

3

4

5

6

7

8

9

10

11

12

3.6 VOLTS

MOBPORTB

TX PEAK

CHARGE

MAIN

PWM Filter

SPI_CLK

SPI_DR

SPI_DW

INTERRUPT

STANDBY

WDI

TX

RX

CLK_IN

DCLK

FSYNC

CE

ON

VSEN1

43

44

13

14

15

16

17

18

19

20

21

42

41

22

23

24

25

26

27

28

29

30

31

32

33

344.7u

C626

2.2KR609

C632 1.u

R614 1.K

R613 1.K

R607 2.2K

R606 2.2K

C601

10u100.n

C642

100.n

C641

4.7UH

2 1

FREQ

32.768K

Y600

21

L600

R615

FILT_B+

75.K

R600

FILT_B+

56.K

R605

NEG POS

0.24CR600

18pF

C638

18pF

C637

C646

FUSED_B+

180.p 100.n

C640

C600

100.n

A6

E600

N2

VIN

2

G12

VIN

3

N12

VS

EN

1

VS

IM1

M13

M12

VS

IN

K13

WD

I

B10XRXD

A7

XT

AL

1

XT

AL

2

V2

H14

V3

K14

V4

J11

V4D

RV

A3

VA

G

M7

VIB

_OU

T

M8

VIB

_VC

C

E13

VIN

1

E9USB_POS

F13USB_PWR

F14USB_VCC

J13

US

B_V

CC

R

E10USB_VM

D10USB_VP

B4

UV

SE

L

E14

V1

P1

TSX1M4

TSX2L4

TSY1

TSY2P3

N5

TS

_BY

P

C5TX

B14

TX

EN

B

C9USB_NEG

K6

TH

ER

MB

IAS

K10

TH

GN

D1

L10

TH

GN

D2

L8

TH

GN

D3

H5

TH

GN

D4

G11

TH

GN

D5

K9

TH

GN

D6

TH

GN

D7

F5

N4

C8SR_IN

E7SR_OUT

D8SR_VIN

A8SR_VOUT

C4STANDBY

H3ST_COMP

G1ST_REF

F10TERM4

N1SPKRN

F1SPKROUT1

F2SPKROUT1L

M2SPKRP

H2SPKR_GND1

L1SPKR_GND2

SPKR_OUT2G3

B8SR_EXT

SIMI_O

SIM_PD1E11

E12SIM_PD2

L12SPI_CLK

L13SPI_DR

SPI_DWL11

K12

SP

I_V

CC

M1SPKRIN

RE

F2

RE

F2_

VC

CB

9

A11

RE

F3

B11

RE

F3_

VC

C

N14RESETB

B6

RT

C_G

N

B5RX

A10SE0_IN

M11

PGM2

N8

PG

ND

M9

PS

RC

1

PS

RC

2K

8

H13

RE

F1A

H12

RE

F1B

J14

RE

F1_

VC

CA

J10

RE

F1_

VC

CB

A9

PA

_ON

1P

13P

A_S

EN

SE

PGA_INLF4

F3PGA_INL2

E4PGA_INR

E1PGA_INR2

J2PGM0

J4PGM1

K1

N6

MO

BP

OR

TB

N3MOD

C12

MU

X_C

TL

D13

NC

J5ON

D6ON2

K4ON3

N13

PA

_DR

VP

14

MA

IN_F

ET

C2MB_CAP1

MB_CAP2D1

J12

MF

ET

_LO

W

A2MICINN

D2MIC_BIAS1

MIC_BIAS2E2

B2MIC_OUT

P10

LS

1_O

UT

P11

M10

LS

2_IN

N10

LS

2_O

UT

LS

3_R

XP

12

N11

LS

3_T

X

P9

LX

1

P8

LX

2

P6

N9

FB

1

L9

FB

2

D5FSYNC

A5INTERRUPT

K7

ISE

NS

E

D14LEDG

G10LEDR

B7

LIC

EL

L

LS

1_IN

DSC_INNB12

DSC_INP

G13

DS

C_P

WR

DS

C_S

PL

YG

14

A13

DW

N_I

NB

13D

WN

_OU

T

K3EXTOUT

EXT_MICC3E5

DCLK

H4

DG

ND

1K

11D

GN

D2

C11

DG

ND

3

DG

ND

4A

4

DINC10

A14DSC_EN

C13DSC_EN_OUT

A12

E8

BL

_SIN

KP

7B

PL

US

B3

CD

_CA

P

L14CE

CH

AR

GE

D7

M6

CH

RG

C

C6CLK_IN

D11CMP_OUT

G2ALRT_REF

J3ALRT_VCC

B1AUX_MICN

C1AUX_MICP

D3AUX_OUT

L7

BA

TT

ER

Y

BA

TT

_FD

BK

N7

P5

BG

_BY

P

L6

AG

ND

5H

11A

GN

D6

AG

ND

7H

10

F11

AG

ND

8D

9A

GN

D9

H1ALRTIN

J1ALRTOUT

K2ALRTOUTP

ADTRIG

E3

AG

ND

1E

6A

GN

D10

G5AGND11A

F12AGND11B

G4

AG

ND

2

AG

ND

3M

3

P2

AG

ND

4

A1L_OUT

D4A1_INT

M5AD4

L5AD5

K5AD6

C14

AD

7

D12

AD

8

P4AD9

M14

PWM1_5.6VVSIM1

VIN5

VOUT

100.n

C650

U601

LP2980

2G

ND

NC43

ON_OFF*

1

VTS_2.3V

VTS_2.3V VTS_2.3V

39.K

R622

39.K

R621

R620

V2_2.775V

39.K

R650

39.K

R651

1.K

V1_2.775V

D601

0.

R647

5V_RF

FILT_B+

R646

56.K

56.K

R645

C615

5V_RF

C614

10u

V3_

2.77

5V

FILT_B+

4.7u

C639

C627

4.7u

100.n

0.047u

C662

1.5K

R643

39.K

R642

TP604

TP603

1K

TP601

R640

V3_2.775V

2.2KR630

100n

C656

3.3K

R618

G2

S1

S2

TP600

D1A

D1B

D2A

D2B

G1

V3_2.775V

Q600

15u

L601

C623

NEG POS

68uF

PWM1_5.6V

MBRM120L

CR602

100.n

C643

R616 10.M

MBRM120LT3

NEGPOS

CR601

F600

7.5

VR601

2.5A

C651

180.p

10.u

C652

C649

V3_2.775V

4.7u

1.uC631

1.uC630

47.0u

L602

C648CR603

MBRM120L

NEG

POS180.p

PWM2_1.8V

C624

33uF

2.2K

R617

AD6_WARP

LV_DETECT

V4_DRV

INT_MIC-

INT_MIC+

PHF_MIC

VA_MIC

ON

VIB_VCC

SPIB_CLK

SPIB_MOSI

SPIB_MISO

GCAP3_INTERRUPT

Backlight-

RX

TX

16.8MHzCLK_IN

DCLK

FSYNC

SPIB_CS2_GCAP3

GRN_LED

RED_LED

EXT_B+

MOD

AUDIO_OUT_ON_OFF

PHF_GND

32KHz

PHF_SENSE

BATT_THRM

CHARGER_ID

HW_ID0

ADTRIG

BATT_FDBK

TX_DETECT

RS232_TX

MTH500 Detailed Service Manual - MTH500 Audio & DC Block (Sheet 2 of 2)

68P02963C70-O 6 - 23

MTH500 Audio & DC Block (Sheet 2 of 2)

42

43

44

SHEET 8 OF 9

79B02964C09-O

8

6

7

9

10

5

14

- Vibrator

13

12

DNP

1

2

3

4

11

C605

VSIM

TP602

C663

R649

3.3n

PGM1 = 0

VIB_VCC

External LP2980 regulator 3.0V for QVCCM

Bias current for the A/D inputsVTS_2.3V

WPIC, ODCT, LVFracN, ...V4_2.775V

V1_2.775V

Dual band

NU

VREF2_2.775V

VSIM1 -

PGM2 = 1

DNP

DNP

DNP

PGM0 = 1

TP connected to Redcap MUX_CNTL pin

Leds and Backlight

- 3.6V nominal - RF PA, TX Pre-drivers, ODCT Up-mixer

- RAW_B+ thru ferrite bead with bypass caps

- 5.0Vdc to WPIC Charge Pump

DC Power Supply Distribution

Digital section - Redcap, Flash, RAM, Display

- Audio

- 5.6Vdc (GCAP3 switching regulator #2 - BOOST) to the input of DSC regulator (5.0Vdc) to the WPIC Charge Pump , VSIM1

- 1.875Vdc(GCAP3 switching regulator #1 - BUCK) to REDCAP core

V2_2.775V

V3_2.775V

5V_RF

RAW_B+

FILT_B+

PWM2_5.6V

PWM1_1.8V

RF TCXOVREF1_2.775V

SW_B+ Battery Voltage for CE bus with the Current limit function

C647

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

180.p

C619

E604

BLM11B601S

100.n

BLM11B601S

E603

4.7u

C629

R648

C6592.7K

4.7u4.7u

C658

4.7u

C609

C657

V3_2.775V

C613

4.7u

V2_2.775V

4.7u10.u

C610

R623

0.

4.7u

VREF2_2.775V

V4_DRV

C654 1.u

VREF1_2.775V

10.u

V1_2.775V

C628

C611

100.n

C608C616

10.u

C607

FILT_B+

R603

100.n

75K

100.n

C606

1.u

C635

C604

100.n

FILT_B+

C621 1n

C620

R601 33K

180.p

C625

100u 180.p

390.pC664

100

4.7u

C612 C660

4.7u

C661

4.7u

C636 390.p

R632

100

R631 100

10n

C655

R629 6.2K

0.

R627R624

0.0.

R626

0.

R625R628

0.

R608 22KC634 1.u

C618 C617

180.p180.p

E602

BLM11B601S

E601

BLM11B601S

C603

33K

1n

R612

6.2KR611R610 22K

C602

10n

1.uC633

R604 75K

C622 390.p

R602

FILT_B+ V4_2.775V

75K

100.n

C644

Q602

1

2

3

SPKR-

SPKR+

VA_SPKR

MUX_CNTL

INT_EAR-_PHF_EAR

INT_EAR+

SCHEMATIC DIAGRAMS - MTH500 REDCAP 2 Block (Sheet 1 of 2)

6 - 24 68P02963C70-O

MTH500 REDCAP 2 Block (Sheet 1 of 2)

19

2

4 3 2 1

3

5

1

O

SWB+_EN

NU

NU

NU

O

SYNT

O

O

II

ODISPLAY RS

BAT_DATA

O

O

O

O

O

I/O

AUDIO_IN

SWB+ Voltage enable for the CE bus

NU

DIS

PL

AY

_RS

O

I

WPIC Serial Port SRD Pin 77

OTCXO_WARP

O

O

VIBR_EN

I

I

I

IINT0 - PTT

O

O

I

MOD

RESET_OUTRESET_OUT

SIM_CARD

TX_DETECT

Sam

sun

g 5

12k

x16

I

SPIB

WPIC Serial Port STD Pin 83

WPIC Serial Port CLK Pin 25

WPIC Serial Port Frame Sync Pin 24

O

O

O

INT1 - GCAPIII INT

RESET_2.5V-2.7V Low_Voltage_Dector (Connect to GCAP3 RESETB Pin)

INT4 - Option_Select_1

INT5 - Option_Select_2

I

I

I

I

KEYPAD

PT

T

ON

/OF

F f

rom

GC

AP

3

Op

tio

n_S

elec

t_1

Op

tio

n_S

elec

t_2

IGCAP3 Audio Serial Port Frame Sync

Internal Pulldown

INPUTS

RESET_OUT

16.8 MHz InputI

32.768 kHz Input

OE

INTERRUPT

GCAP3

I

O

Connect to GCAP3 WDI Pin

INT0 - PTT

INT1 - GCAPIII INT

INT4 - Option_Select_1

INT5 - Option_Select_2

RTS

RX

TX

ROW7

ROW6

INT6

INT7

SYMBOL

PIN NAME

Gen Port Ctrl Reg (GPCR)GPCR = xxxxxxxx x11xxx11

Gen Port Ctrl Reg (GPCR)GPCR = xxxxxxxx x00xxx00

GPCR (Bit7)=1GPCR (Bit7)=0

I

I

O

O

O

O

O

I

I

I

O

O

O

O

O

I

I

I

I

O

NOTE: RESETS FROM THE BOTTOM CONNECTOR WILL ONLY BE POSSIBLE IF

MUX_CTRL =1 AND THE 8-WIRE INTERFACE IS THUS SET TO JTAG MODE

32.768 kHz Input

16.8 MHz InputI

Un

use

d G

PO

Un

use

d G

PO

Un

use

d G

PO

Un

use

d G

PO

Un

use

d G

PO

Un

use

d G

PO

O

O

O

O

O

LA

YE

R1

TIM

ER

RI

DCD

DSR

DTR

8-Wire RS232

STDA

SRDA

SB9600

ESSI

MUX_CTRL=1MUX_CTRL=0

DSP_DE

CTS

REDCAP2

17x17mm BGA

CS2#-SRAM

FLASH2 Meg x16

WPIC

ODCT

FL

AS

H

SR

AM

RA

DIO

SO

FT

TU

RN

OF

F

NU

RESET_OUT

SPIA

GCAP3 Audio Serial Port Clock

DSP_SRD goes to GCAPIII_TX

DSP_STD goes to GCAPIII_RX

CTS

RTS

RX

TX

WPIC

I

I

O

O

O

O

O

MCU_DE

RESET_IN

TDI

TDO

TCK

TRST

TMS

JTAG

CTS

RTS

RX

TX

SCKA

SC2A

STDA

SRDA

4-Wire RS232

ESSI

BUSY_OUT

BUSY_IN (IC2)

RX

TX

SCKA

SC2A

TP414

100.n

C430

R417

6.8K

TP411

TP412

TP413

TP409TP410

TP407

TP408

C426 10n

C425

10n

14

TP402

1

TP405

VS

S2

E3

VS

S3

8

9

10

11

12

13

G5

LBA1

G2NC1

NC2H6

B2UB

E1

VC

C1

D6

VC

C2

VS

S1

D1

E6

D4F5

D5F6

D6G6

D7B1

D8C1

D9

B6DO

EN_OEA2

EN_WE

D10D2

D11E2

D12F2

D13F1

D14G1

D15

C6D2

D5D3

E5

A5C4

A6D4

A7H2

A8H3

A9

B5CS1

A6CS2

C5D1

C2

A14

A15F4

E4A16

A17D3

H1A18

A5A2

B3A3

B4A4

C3

K6F8016U6AA3A0

A4A1

H4A10

H5A11

G3A12

G4A13

F3

V3_2.775V_FLTR

U402

TP4011

V3_2.775V_FLTR

0R401

21

18

0

V3_2.775V_FLTR

21

TP4031

C412 100.n

100.n

C401

F1

GN

D2

NC1C4

F5

VC

CE

1V

CC

Q

A4

VP

P

5

DQ8D6

DQ9E6

EN_CED7

EN_OEF8

EN_RPB4

EN_WEB3

A5EN_WP

E8

GN

D1

DQ14D2

DQ15E2

DQ2D5

DQ3E5

DQ4F4

D3DQ5

DQ6E3

DQ7F2

A3A8

C3A9

DQ0E7

DQ1F7

DQ10F6

DQ11D4

DQ12E4

DQ13F3

A6A19

B8A2

C5A20

C7A3

A8A4

B7A5

C6A6

A7A7

A2A11

C2A12

A13A1

B1A14

C1A15

D1A16

B6A17

B5A18

28F320C3

U403

D8A0

C8A1

B2A10

4

6

33

2

2 3 4 5

15

6

4

N8

XY

D6

M6

XY

D7

XY

D8

L10

XY

D9

M9

XZ

YR

WC

4

B5

XY

SE

L

XY

ST

B4

1

N9

T9

XY

D13

XY

D14

R9

P9

XY

D15

M5

XY

D2

P8

XY

D3

R8

XY

D4

T8

XY

D5

A1

XY

A7

C2

C3

XY

A8

D1

XY

A9

R7

XY

D0

T7

XY

D1

XY

D10

M10

XY

D11

M11

XY

D12

XY

A12

XY

A13

E1

E3

XY

A14

XY

A15

E4

XY

A2

B3

XY

A3

B2

XY

A4

A3

XY

A5

A2

XY

A6

B7

H14

TR

ST

G15TXA_TDO

TXBK11

XY

A0

A4

XY

A1

D4

D2

XY

A10

D3

XY

A11

E2

E8

D5TOUT2

C6TOUT3

B6TOUT4

A6TOUT5

D6TOUT6

D7TOUT7

TOUT8C7

TOUT9

TM

S

A5TOUT0

C5TOUT1

TOUT10B8

TOUT11A8

TOUT12D8

TOUT13E6

TOUT14E7

TOUT15

B12

D16STDA

A14STDB

T13STO

H13

TC

KG

12T

DI

F12

TD

O

G16

TE

ST

H12

SPICS3A

SPICS3BA10

F7SPICS4A

E12SPICS4B

A9SPI_CKA

SPI_CKBD11

D13SRDA

B14SRDB

SRDB2

SIZ

0F

14S

IZ1

D9SPICS0A

SPICS0BD10

E11SPICS1A

SPICS1BC10

E10SPICS2A

SPICS2BB10

E9

SC2B

C15SCKA

C13SCKB

SCKB2A12

SE

NS

EP

12

N11

SIM

CL

K

N12

SIM

DA

TA

T12

SIM

RE

SE

T

F15

RW

G14RXA_IC1_TDI

RXBJ12

SC0AB16 B13

SC0BA16

SC1AA13

SC1BA15

SC2AC14

ROW2K15

ROW3J14

ROW4

ROW5_IC2BJ15

J16ROW6_DCD_SC2A_DSP_DE

J13ROW7_RI_SCKA_TCK

G13RTSA_IC2A_RESET_IN

RTSBK12

M2

PS

TA

T2

D15

PS

TA

T3

T10PVCC

PW

R_E

NT

11

R13RESET_IN

P13RESET_OUT

L15ROW0

K13ROW1

K14

D12

F16MUX_CTL

M1

OE

P1GNDN10

R10PCAP

P10PGND

E13

PS

TA

T0

PS

TA

T1

E15

D14

INT

5M

13IN

T6_

DS

R_S

TD

A_T

RS

TL

14IN

T7_

DT

R_S

CL

K_S

RD

A_T

MS

MC

U_D

EH

11

B9MISOA

MISOBC11

R12

MO

D

C9MOSIA

MOSIB

DS

P_I

RQ

K1

EB

0J3

EB

1

INT

0N

16

N15

INT

1N

14IN

T2

M15

INT

3M

16IN

T4

M14

R3

P3D4

T4D5

R4D6

P4D7

P5D8

N5D9

G11

DS

P_D

E

C12

T2

P6D10

R6D11

T6D12

N6D13

N7D14

P7D15

T3D2

D3

CS

1P

2C

S2

R2

CS

3P

1C

S4

R1

CS

5

F13CTSA_MCU_DE

CTSBL12

T1D0

D1

COLUMN1R15

COLUMN2T14

COLUMN3R16

COLUMN4P16

COLUMN5P15

COLUMN6_OC1P14

COLUMN7

N3

CS

0N

2

ADDR7H5

ADDR8G5

ADDR9

K4CKIH

CKILK2

M3CKO

L2CKOH

N13COLUMN0

R14

ADDR19

ADDR2J4

F2ADDR20

F3ADDR21

ADDR3L5

K6ADDR4

J6ADDR5

H6ADDR6

G6

ADDR11

ADDR12H1

H2ADDR13

H3ADDR14

ADDR15E5

G3ADDR16

G4ADDR17

F4ADDR18

F1

U401

30C40

J2ADDR0

J1ADDR1

F5ADDR10

H4

12

13

14

15

15

8

9

10

11

11

12

13

14

15

10

11

12

8

9

10

5

6

7

8

9

7

1

2

3

4

1

2

3

4

5

6

16

17

18

19

0

0

1

2

3

4

5

6

7

13

14

15

1

2

8

9

10

11

12

3

4

5

6

7 5

6

7

0

1

2

19

1

2

3

4

14

15

16

17

18

8

9

10

11

12

13

3

4

5

6

7

14

15

16

17

PWM2_1.8V_FLTR

20

20

13

22.KR405

10uF

C415

U405R407

47.

C422

10.n

DISPLAY_RS

VIBR_EN

TCXO_WARP

C423

6.8n

MEM_CNTL(6:1)

SPIB_CS2_GCAP3

SPIB_MISO

SPIB_CLK

SPIB_MOSI

SPIB_CS1_DISPLAY

SIM_BUS(5:1)

VA_EN

WPIC_OSC_EN

GCAP3_STANDBY

AUDIO_SENSE

BAT_DATA

MOD

SOFT_TURN_OFF

SWB+_EN

SIM_DATA

SIM_POWER

SIM_RESET

SIM_CLOCK

CS2_

EB1

EB0

WPIC_SRD

KP_ROW4

TX_DETECT

RX_ACQ

TETRA_MAIN_VCO_ON

SYNT_CS_

RESET_OUT

RESET_OUT

RS232_DTR

RS232_DSR

16.8_MHz_CLK

KP_COL0

KP_COL1

KP_COL2

KP_COL3

KP_COL4

KP_ROW0

KP_ROW1

KP_ROW2

KP_ROW3

LV_DETECT

GCAP3_FSYNC

GCAP3_DCLK WPIC_TXCLK

GCAP3_TX

GCAP3_RX WPIC_STD

LO_Driver_En

LO_Mixer_En

WPIC_TXE

PA_Bias

GCAP3_AD_TRIGGER

ANT_EN

RS232_TX

HST_Addr(0:21)HST_DATA(0:15)

SPIA_CS0_WPIC

SPIA_MISO

SPIA_CS2_ODCT

SPIA_CLK

32KHz_CLK

RS232_CTS

PTT

GCAP3_INT

OPT_SEL_1

OPT_SEL_2

MCU_DE

SPIA_MOSI

MUX_CTRL

RS232_DCD

RS232_RI

RS232_RTS

RS232_RX

WPIC_FSYNC

AUDIO

CODEC

QSPI-A

QSPI-B

EIM

EMU AND DEBUG INTERRUPTS

KEYPAD

UART-B

UART-A

CLOCK AND PLL

LAYER1 TIMER

BASEBANDCODEC PORT

JTAG AND TEST SMART CARD

MTH500 Detailed Service Manual - MTH500 REDCAP 2 Block (Sheet 2 of 2)

68P02963C70-O 6 - 25

MTH500 REDCAP 2 Block (Sheet 2 of 2)Bypass Caps for REDCAP

REDCAP2

PWR, GND, NC

Ad

dre

ss B

us

Bu

s C

on

tro

l

Dat

a B

us

Au

dio

Co

dec

Po

rt

Clo

ck O

utp

ut

Dri

ver

Bo

tto

m, G

PIO

, JT

AG

, DE

BU

G, D

AT

A,S

TO

QS

PI &

L1T

& B

BP

EM

UL

po

rt

SIM

CA

RD

Inte

rnal

Co

re

Co

re V

olt

age

Co

nve

rto

rs

DS

P A

dd

ress

vis

ibilt

y

DS

P D

AT

A v

isib

ilty

VCC TRUTH TABLE

PWM2_1.8V = 1.875V (Redcap Core, ADDR/Data Bus, Flash, SRAM.

V3_2.775V = 2.775V (from GCAP3 V3)

PWM2

V3

VSIM1 = 3V for the SIM port and QVCCH

VSIM1

79B02964C09-O

SHEET 7 OF 9

C429

100n

100n

C428

100n

C427

C424

100n

VSIM1

PWM2_1.8V_FLTR

V3_2.775V_FLTR

10.u

C416

E401

V3_2.775V

PWM2_1.8V

E400

1.u

C420C414

180p

1.u

C421

180p

C413

QV

CC

2L

4

QV

CC

3L

13

QV

CC

4M

7

QV

CC

H1

F9

J11

QV

CC

H2

QV

CC

H3

M8

QV

CC

H4

K3

NC7H8

NC8H9

NC9H10

QG

ND

1F

10

QG

ND

2L

1

QG

ND

3L

7

QG

ND

4L

16

QV

CC

1F

8

K10NC17L6NC18L11NC19

NC2G7

NC3G8

NC4G9

NC5G10

NC6H7

NC1F11

NC10J7

NC11J8

NC12 J9

NC13 J10

K7NC14K8NC15K9NC16

C8

HV

DD

2

KG

ND

E14

KV

DD

E16

C1

LG

ND

B1

LV

DD

MG

ND

L9

MV

DD

L8

NC0F6

GG

ND

2K

16

T15

GG

ND

3

GV

DD

1H

16

GV

DD

2M

12

T16

GV

DD

3

A7

HG

ND

1

HG

ND

2A

11

HV

DD

1B

11

CV

DD

N1

DG

ND

T5

DV

DD

R5

EG

ND

C16

EV

DD

B15

FG

ND

L3

FV

DD

M4

GG

ND

1H

15

AG

ND

1G

2

AG

ND

2K

5

AV

DD

1G

1

AV

DD

2J5

BG

ND

P11

BV

DD

R11

CG

ND

N4

PWR_GND_NC

U401

C418

.01uF

.01uF

C417 C419

.01uF

100.n

C402C405

100.n

C407

100.n

C404

100.n

C409

100.n

C410

10.n

C406

100.n 100.n

C408C403

10.n

SCHEMATIC DIAGRAMS - MTH500 Accessory Connector Block

6 - 26 68P02963C70-O

MTH500 Accessory Connector Block

DNP

Battery Feedback/Charger ID

External Power

USB-(RXD/TDI)

USB+(TXD/TDO)

USB POWER/IGNITION/RTS

700 mA Switched B+ Supply

HOOK SWITCH/CTS

MUTE/FS/DCD

AUD_SEL2/SCK/RI

AUD_SEL1/SRDA/DTR

AUD_SEL0/STDA/DSR

OPTION 1

OPTION 2

AUDIO OUT/RADIO ON/OFF

AUDIO IN

NC

SWB+ FOR CE BusCE_BUS

CONNECTOR

AUDIO_GND

GND

OVER VOLTAGE PROTECTION

BLM21P300S

BLM11P300S

to GND

0603

0402

79B02964C09-O

SHEET 9 OF 9

DNP DNP DNP DNP

DNP DNP DNP DNP

DNP

N/U

N/U

180.p

J10-2020

C105

E101

R108

100.

J10-1818

J10-1919

V3_2.775V

100K

R121

C122

100.n

C121

100.n

10K

R120

V3_2.775V

16VR107

7.5

VR106

E102

9R2

8R3

7R4

2

C1

3

C2

4

C3

5

C4

6G

ND

11

GN

D2

10R1

10R1

9R2

8R3

7R4

EZAST31U105

2C1

3C2

4C3

5C4

1G

ND

1

6G

ND

2

9R2

8R3

7R4

FLTR_EZAST33A

U106

2C1

3C2

4C3

5C4

1G

ND

1

6G

ND

2

10 R1

FLTR_EZAST33AU107

R119

22K

R118

1K

MC33645

U100

32

4

1

5

C120

100n

Q100

V3_2.775V V3_2.775V

SI3443DV

47.K

R113

47.K

R109

16

J10-1717

J10-1515

J10-16

13

J10-1414

J10-1212

J10-13

10

J10-11

11

J10-99

J10-10

J10-7

7

J10-8

8

J10-66

J10-44

J10-55

J10-33

J10-1

1

J10-22

180.p

C119

180.p

C116

180.p

C117

180.p

C118

C115C114

180.p180.p180.p

C113

180.p

C112

33.p

C108

180.p

C111

180.p

C110

180.p

C109

2G

ND

1

5G

ND

2

4NC

1VIN

6VOUT

U104CURRENT_SWIT

3ENABLE

R101

V3_2.775V

R111

10.K

39K

10.n

C101

V3_2.775V

D101

V3_2.775V

R105

47.K1.5K

100.n

C104

R106

100.n

C103

C102

0.47u

R104

10K

R103

270.K

R110

1K

C107

180.p

C106

180.p VR102

5.6V

2 5

1 3 4 6

7.5V

4631

VR105

5.6V

VR104

25

25

3146

100.

R107

5.6VVR101

AUDIO_SENSE

USB_VCC_SW

ASEL2_RI_SCK

BATT_FDBK_AD

SWB+_EN

RAW_B+

USB_PWR_RTS_IGN

EXT_B+

VA_EN

BATT_FDBK

TxD_USB+

RxD_USB-

HKSW_CTS

DCD_MUTE_FS

ASEL1_DTR_SRDA

ASEL0_DSR_STDA

OPT1

OPT2

AUDIO_OUT

AUDIO_IN

CE_ON_OFF

MTH500 Detailed Service Manual - MTH500 (FLF9011A) Component Parts (for reference only)

68P02963C70-O 6 - 27

MTH500 (FLF9011A) Component Parts (for reference only)When ordering component parts, the part number should be included. If the correct numbers cannot be located, call Motorola Parts Identification.

CAPACITORS

Ref # Part # Description Ref # Part # Description Ref # Part # Description Ref # Part # Description Ref # Part # Description

C001 2113743p01 180pF C401-402 2113743M24 100nF C526-527 2113743n26 10pF C608 2113743M24 100nF C701-703 2360567A06 100µF

C002 2113740F39 33pF C403 2113743L41 10nF C528 2113743n24 8.2pF C609 2113928C04 4.7µF C704 2311049G32 10µF

C003 2113740F39 33pF C404-409 2113743M24 100nF C530 2113743L41 10nF C610-611 2113928k09 10µF C800 2113740F49 82pF

C004 2113743p01 180pF C410 2113743L41 10nF C531 2113741F41 4.7nF C612-614 2113928C04 4.7µF C802 2113743L03 270pF

C005 2113743p01 180pF C412 2113743M24 100nF C532 2113743n22 6.8pF C615 2113928D08 10µF C805 2113743L03 270pF

C006 2113743p01 180pF C413-414 2113740F57 180pF C533 2113928U08 10nF C616 2311049A72 Tant. 10µF C808 2113740F57 180pF

C007 2113743p01 180pF C415-416 2311049A59 Tant. 10µF C534 2113743L41 10nF C617-620 2113743p01 180pF C809 2113743L03 270pF

C008 2113743p01 180pF C417-419 2113743L41 10nF C535 2113928n01 100nF C621 2113743L17 1nF C811-812 2113743L03 270pF

C009 2113743p01 180pF C420-421 2113928P04 1µF C536 2113743n34 22pF C622 2113743L07 390pF C814-816 2113743L03 270pF

C010 2113743p01 180pF C422 2113741F49 10nF C539 2113743Q08 1.8pF C623 2311049C16 Tant. 68µF C817 2113740F57 180pF

C011 2113743p01 180pF C423 2113741F45 6.8nF C542 2113743L29 3.3nF C624 2311049C15 Tant. 33µF C819-821 2113743L03 270pF

C012 2113743p01 180pF C424 2113743M24 100nF C545 2113743n19 5.1pF C625 2311049C14 Tant 100µF C822-823 2113741F25 1nF

C013 2113743p01 180pF C425-426 2113743L41 10nF C546 2113743Q07 1.5pF C626-627 2113928C04 4.7µF C824 2113743L03 270pF

C014 2113743p01 180pF C427-429 2113743M24 100nF C547 2113928n01 100nF C628 2113928P04 1µF C827-830 2113743L03 270pF

C015 2113743p01 180pF C430 2113928n01 100nF C549 2113928n01 100nF C629 2113928C04 4.7µF C831 2113743N69 1.8pF

C016 2113743p01 180pF C500 2113743L03 270pF C550-552 2113743l17 1nF C630-635 2113928P04 1µF C832 2113743N46 68pF

C017 2113743p01 180pF C501-502 2113928n01 100nF C553 2113928N01 100nF C636 2113743L07 390pF C833 2113743L09 470pF

C031 2113743p01 180pF C503 2113743L41 10nF C554 2113743E12 47nF C637-638 2113743N32 18pF C834 2113743L03 270pF

C032 2113743p01 180pF C504 2113928n01 100nF C555 2113928n01 100nF C639-643 2113743M24 100nF C835 2113743N32 18pF

C037 2113743p01 180pF C505 2113743L17 1nF C557 2113743E03 15nF C644 2113928n01 100nF C837 2113740F39 33pF

C038 2113743N38 33pF C507 2113743L17 1nF C560-561 2311049A59 Tant. 10µF C646-648 2113740F57 180pF C838 2113743N18 4.7pF

C049 2113743N38 33pF C508 2113928n01 100nF C572-573 2113928n01 100nF C649 2113928C04 4.7µF C839 2113740F47 68pF

C101 2113743L41 10nF C510 2113743L03 270pF C574 2113743L03 270pF C650 2113743M24 100nF C840 2113740F30 18pF

C102 2113928A02 0.47µF C512 2113743L03 270pF C576 2113743L03 270pF C651 2113740F57 180pF C841 2113740F47 68pF

C103-104 2113928n01 100nF C513 2113743L17 1nF C577 2113743L41 10nF C652 2311049G32 Tant. 10µF C842 2113743N34 22pF

C107 2113743p01 180pF C514 2113743L03 270pF C580 2113743l17 1nF C653 2311049C18 4.7µF C843 2113743N30 15pF

C116-119 2113743p01 180pF C515-516 2113928n01 100nF C590 2113743L03 270pF C654 2113928C04 4.7µF C844-845 2113743N28 12pF

C120-121 2113743M24 100nF C518-519 2113928n01 100nF C600 2113743M24 100nF C655 2113743L41 10nF C846 2113743N26 10pF

C122 2113928s04 100nF C521 2113743n15 3.6pF C601 2113928D08 10µF C657-661 2113928C04 4.7µF C847 2113743N24 8.2pF

C200 2113743L03 270pF C522 2113743N50 100pF C602 2113743L41 10nF C662 2113928S02 0.047µF C848 2113743N25 9.1pF

C203 2113743L03 270pF C524 2113743Q08 1.8pF C603 2113743l17 1nF C663 2113743L29 3.3nF

C205 2113743L03 270pF C525 2113743n28 12pF C604-607 2113928n01 100nF C664 2113743L07 390pF

SCHEMATIC DIAGRAMS - MTH500 (FLF9011A) Component Parts (for reference only)

6 - 28 68P02963C70-O

C849 2113743N11 2.4pF C909-910 2113743N50 100pF C984 2113743L37 470pF E007 2409134j04 blm11b601s

C850 2113743N17 4.3pF C915 2113743N50 100pF C1004 2113928n01 100nF E008 9108445S04 fm60r

C851 2113743N13 3pF C916 2113743L17 1nF C1009 2113743L37 6.8pF E009 9108445S04 fm60r

C852 2113740F21 1pF C919 2113743n30 15pF C1010 2113743N22 8.2pF E010 7686949J02 blm10b601sdp

C853-857 2113743L17 1nF C920 2113740F25 8.2pF C1011 2113740F17 3.9pF E101 2480675U01 idctr

C859 2113743L07 390pF C921-922 2113740F27 10pF C1012 2113740L05 3pF E102 7686949J08 idctr

C860 0804533C48 22nF C927 2113740F31 15pF C1014 2113743L03 270pF E201 2480675U01 idctr

C861-862 2113743E05 18nF C929 2113740F20 5.1pF C1015 2113743N20 5.6pF E203 2480675U01 idctr

C863-864 2113741F45 6.8nF C930 2113743N50 100pF C1016 2113743N40 39pF E400-401 2480067M02 blm21a121s

C865 2113743L17 1nF C931 2113740F20 5.1pF C1020 2113928n01 100nF E500-501 7686949J02 blm10b601sdp

C866 2113743L03 270pF C932 2113740F31 15pF C1021 2113743L03 270pF E600 2480675U01 idctr

C867 2113740F35 2.7nF C933 2113743n20 5.6pF C1022 2113928P04 1µF E601-604 2409134J04 blm11b601s

C869 2113928N01 100nF C937 2104263L01 100nF C1023-24 2113743K15 100nF E800 7686949J02 blm10b601sdp

C873 2113743L17 1nF C938 2113743n17 4.3pF C1028 2186113u01 56pF E801 9108445S04 fm60r

C874-875 2113928n01 100nF C939 2113743N15 3.6pF C1029 2113740F30 13pF DIODES E803 2409134J04 blm11b601s

C877-878 2113743cL37 6800pF C940 2113740L01 2pF C1030 2113740F24 7.5pF Ref # Part # Description E806 2409134J04 blm11b601s

C879 2113741F49 10nF C942 2113740F25 8.2pF C1031-1032 2113743L03 270pF CR600-603 4813833a19 mbrm120L E807 7686949j02 blm10b601sdp

C880 2113741f45 6.8nf C946 2113743N50 100pF C1045 2113743L07 390pF D001 4808032h08 1ss355 E808-809 2409134j04 blm11b601s

C881-882 2113741F41 4.7nF C948 2113743L37 6.8nF C1046 2113928W09 47µF D101 4809948D42 1ss367 E810 7686949j02 blm10b601sdp

C883 2113928n01 100nF C951 2113743n28 12pF C1048 2113743L03 270pF D500 4808115L17 tekelec E901 7686949j02 blm10b601sdp

C886 2113740F41 38pF C953 2113743L17 1nF C1050 2113743L03 270pF D601 4809948D42 1ss367 FUSES

C887 2113743N46 68pF C954 2113743L03 270pF D800 4804135k05 1sv231 Ref # Part # Description

C888 2113743L03 270pF C955 2113743L48 22000pF D801 4885908A02 ma4p789 F600 6586221j04 2.5A 16V

C890 2113743N40 39pF C957 2113743L33 4.7nF D902 4809877c13 1sv305

C891 2113743L03 270pF C958 2104263L01 100nF D907 4805656W28 BBY5802W

C894 2113740F51 100pF C959 2113743L17 1nF BEADSC895 2113743L29 3.3nF C960 2113740F24 7.5pF Ref # Part # Description

C897 2113743N38 33pF C961 2113743L48 22nF E001 2409134j04 blm11b601s

C898-899 2113743L03 270pF C962 2113743N33 20pF E002 7686949j02 blm10b601sdp

C901-902 2113928n01 100nF C966 2113743L17 1nF E003 7686949j02 blm10b601sdp

C903 0804533C50 33nF C967 2113743L03 270pF E004 7686949j02 blm10b601sdp

C904 2113743L03 270pF C968 2113743L17 1nF E005 7686949j02 blm10b601sdp

C905-906 2113743N50 100pF C970-971 2113743L17 1nF E006 7686949j02 blm10b601sdp

CAPACITORS

Ref # Part # Description Ref # Part # Description Ref # Part # Description Ref # Part # Description Ref # Part # Description

MTH500 Detailed Service Manual - MTH500 (FLF9011A) Component Parts (for reference only)

68P02963C70-O 6 - 29

FILTERS TRANSISTORS

Ref # Part # Description Ref # Part # Description Ref # Part # Description Ref # Part # Description Ref # Part # Description

FL500 9180310L24 390mhz L530 2409154M21 47n L916 2413926g16 56n Q002 4809579E50 si1905dl R011 0662057N11 33K

FL501 9186216J06 380mhz L600 2408603y01 4.7uh L917 2413926g05 6.8n Q100 4809579E29 si3443 R012 0662057M24 1000K

FL502 9185898A02 109.65mhz L601 2486085A02 15u L918-919 7686949j02 blm10b601sdp Q500 4805723X03 umd3n R013 0662057M90 res_4.7K

FL800 9180310L23 390mhz L602 2486085A05 47uh L920 2460591C23 13.85n Q504 4805723X03 umd3n R014 0662057M98 res_10K

FL801 5804901K15 380mhz L800 2409154M23 68n L921 2486616u01 5.6n Q600 4885140c01 fds6875 R015 0662057m34 res_22

L801 2409377M10 33n L922 7686949j02 blm10b601sdp Q602 4805128M27 bsr33 R016 0662057m34 res_22

CONNECTORS L803 2413926g19 100n L923 2485930822 2.8n Q800 4805723X03 umd3n R025 0662057M74 res_1K

Ref # Part # Description L805 2413926g19 100n L926 2409154M17 22n Q801 4805793y01 ne68519 R101 0662057V17 res_39K

J10 0987636k05 conn_ce L806 2413926g17 68n L930 2486170u01 390n Q804 4805723X03 umd3n R103 0662057n33 res_270K

J700 0987984k02 conn_va L807 2409154M20 39n L931 2486185u01 1u Q805 4805921t11 21t11 R104 0662057M98 res_10K

L808 2409154M17 22n L932 2409154M20 39n Q806-807 4805723X03 umd3n R105 0662057n15 res_47K

L809-810 2409154M14 12n Q808 4809579E41 ne38018 R107-108 0662057m50 res_100

L811-812 2413926m12 8.2n CONTACTS Q900 4805723X02 umt1 R109 0662057n15 res_47K

L813 2413926g11 22n Ref # Part # Description Q903-905 4805793y01 ne68519 R110 0662057M74 res_1K

INDUCTORS L815 2409154M22 56n M001 3986389t01 contact_Spkr Q907 4805723X03 umd3n R111 0662057M98 res_10K

Ref # Part # Description L816 2409154M23 68n M002 3986389t01 contact_Spkr Q910 4805723X03 umd3n R113 0662057n15 res_47K

L500 2487685L08 22n L817 2409377M06 15n M005 3986535t01 contact_Vibrator

L501 2462587V42 470n L818 2487685L08 22n M006 3986535t01 contact_Vibrator

L504 2462587V42 470n L819 2409377M19 128n M500 3986916t01 contact_Ant_Hot RESISTORS

L505 2413926G17 68n L890 2460591C23 13.85n M501 3986917t01 contact_Ant_Gnd Ref # Part # Description

L508 2413926G16 56n L903 2486170u01 390n P1 0989368K01 Connector J R001 0662057n07 res_22K

L512-513 2413926G08 12n L905 2409377M12 47n P15 2886925J04 Connector P R003 0662057n01 res_12K

L518 2409154M19 33n L906 2409154M19 33n R004 0662057M81 res_2k

L519-520 2462587V38 220n L907 2409154M13 10n R008 0662057M40 res_39

L525 2409154M17 22n L912-913 2486170u01 390n R010 0662057M01 res_0

SCHEMATIC DIAGRAMS - MTH500 (FLF9011A) Component Parts (for reference only)

6 - 30 68P02963C70-O

RESISTORS (Continued) MISCELLANEOUS

Ref # Part # Description Ref # Part # Description Ref # Part # Description Ref # Part # Description Ref # Part # Description

R118 0662057M74 res_1K R640 0662057M74 res_1K R835 0662057M67 res_510 R960 0662057M74 res_1K U100 5109731 C32 MC33645

R119 0662057N07 res_22K R642 0662057N13 res_39K R836 0662057M61 res_300 R961 0662057M62 res_330 U104 5109817 F45 current switch

R121 0662057N23 res_100K R643 0662057M78 res_1.5K R838 0662057m54 res_150 R962-963 0662057M90 res_4.7K U105 9185759B02 ezast31

R401 0662057M01 res_0 R645-646 0662057V21 res_56K R899 0662057N23 res_100K R964 0662057M81 res_2K U106 9186133U02 FLTR_ezast33a

R405 0662057N07 res_22K R647 0662057M01 res_0 R901 0662057n15 res_47K R965 0662057M60 res_270 U107 9186133U02 FLTR_ezast33a

R407 0662057A17 res_47 R649 0662057M50 res_100 R906 0662057M90 res_4.7K R966 0662057M40 res_39 U401 5185130C40 redcap 30c40

R417 0662057M94 res_6.8K R650 0662057N13 res_39K R907-908 0662057M32 res_18 R967 0662057M34 res_22 U402 5189509A43 SRAM 512k

R500 0662057M74 res_1K R651 0662057M74 res_1K R909 0662057M99 res_11K RT500 0686931j01 therm_47K U403 5199420A01 flash -2m

R504 0662057M38 res_33 R800 0662057M61 res_300 R911 0662057M82 res_2.2K RT800 0686931j01 therm_47K U405 2480067m02 blm21a121s

R512 0662057U94 res_5.1 R801 0662057m90 res_4.7K R913 0662057M72 res_820 U500 5185368c01 rf2361

R514-515 0662057N23 res_100K R802-804 0662057m82 res_2.2K R914 0662057M87 res_3.6K U503 5185127c02 wpic27c02

R805 0662057M68 res_560 R915 0662057M90 res_4.7K U504 5108428s91 mixer

R519 0662057M01 res_0 R806 0662057m76 res_1.2K R916 0662057m82 res_2.2K U600 5109879e83 gcap-3

R520-521 0662057N23 res_100K R807 0662057m67 res_510 R917 0662057M47 res_75 U601 5104667m01 lp2980

R580 0662057M58 res_220 R808 0662057m61 res_300 R918 0662057m56 res_180 U800 5109944C20 linear mixer RF

R600 0680195M64 res_0.24 R809 0662057m54 res_150 R919 0662057M67 res_510 U801 5880334L02 i/q splitter

R601 0662057n11 res_33K R810 0662057M50 res_100 R921 0662057m60 res_270 SHIELDS U802 4808115L16 pin diode

R602-604 0662057v24 res_75K R812 0662057m60 res_270 R922 0662057m64 res_390 Ref # Part # Description U803 5108428S43 Lnodct

R605 0662057V21 res_56K R814 0662057m43 res_51 R923-924 0662057m46 res_68 SH001 2686672t01 shield U804 9186395J02 380MHz-BW

R606-607 0662057m82 res_2.2K R815 0662057M54 res_150 R925 0662057m38 res_33 SH003 2686661t01 shield U806 5880334L06 coupler

R608 0662057N07 res_2.2K R816-817 0662057m43 res_51 R927 0662057m34 res_22 SH004 2686671t01 shield U808 5186226j12 lmx2332

R609 0662057m82 res_2.2K R818 0662057M54 res_150 R931 0662057M96 res_8.2K SH005 2686663t01 shield U809 5108683Y04 RF2175

R610 0662057N07 res_22K R819 0662057M32 res_18 R932 0662057M77 res_1.3K SH007 2686670t01 shield VR003 4885849B01 49b01

R611 0662057m93 res_6.2K R820 0662057M24 res_8.2 R934 0662057M74 res_1K SH500 2686831t01 shield VR101 4885656W08 mmqa5v6t1

R612 0662057n11 res_33K R821-824 0662057M32 res_18 R936 0662057M50 res_100 SH800 2686655t01 shield VR102 4885656B01 49b01

R613-614 0662057m74 res_1K R825 0662057M40 res_39 R937 0662057m43 res_51 SH802 2686830t01 shield VR104 4805656W08 MMQA5V6T1

R615 0662057V24 res_75K R826 0662057M43 res_51 R939 0662057M50 res_100 SH900 2686658t01 shield VR105 4805656W08 MMQA5V6T1

R617 0662057m82 res_2.2K R827 0662057MV70 res_301 R943 0662057M68 res_560 SH901 2686659t01 shield VR106 4885849B01 49B01

R620-622 0662057n13 res_39K R828 0662057V69 res_215 R944 0662057M34 res_22 V107 4813830C29 mmsz5246bt1

R623-625 0662057M01 res_0 R829 0662057M96 res_8.2K R950 0662057M67 res_510 VR601 4813830A19 mmbz5236b

R629 0662057m93 res_6.2K R832 0662057M50 res_100 R953 0662057M50 res_100 Y501 5102845C20 tcxo 16.8 mhz

R630 0662057m82 res_2.2K R833 0662057M32 res_18 R954 0662057M57 res_200 Y600 480995L05 xtal 32.768 khz

R631-632 0662057M50 res_100 R834 0662057M61 res_300 Y901 4804122K12 resonator

MTH500 Detailed Service Manual - MTH500 Flex CD

68P02963C70-O 6 - 31

MTH500 Flex CD

73B02964C06-O

J2-1

J1-14

J1-15

to keypad to LCD

J1-12

J1-13

J1-10

J1-11

J1-8

J1-9

J1-5

J1-6

J1-7

J1-3

J1-4

J1-1

J1-2

J2-3

J2-2

J2-6

J2-5

J2-4

J2-8

J2-7

J2-10

J2-9

J2-12

J2-11

J2-14

J2-13

J2-16

J2-15

J2-18

J2-17

J2-21

J2-20

J2-19

J1-22

J2-22

J1-20

J1-21

J1-18

J1-19

J1-16

J1-17

SCHEMATIC DIAGRAMS - MTH500 Flex CD

6 - 32 68P02963C70-O

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68P02963C70-O A1 - 1

Appendix 1 ReplacementParts and Kits

REPLACEMENT PARTS AND KITS

Damaged parts should be replaced with identical replacement parts.

Replacement Parts

For complete information on ordering required parts and kits, contact your local customer service representative.

Level 3 Maintenance

EMEA Region

EMEA Radio Support Depots are level 3 service partners. The depots are capable of performing repairs down to component level where retuning is required. Con-tact your local CGISS office for information.

Motorola European Radio Support Centre ERSC Phone: +49 6128 702618Heinrich Hertz Strasse 1D-65232 TaunussteinGermany

ERSC Customer Information Desk available through the following service number:Austria: 06 60 75 41 Italy: 16 78 77 387Belgium: 08 00 72 471 Luxemburg: 08 00 23 27 Denmark: 80 01 55 72 Netherlands: 60 22 45 13Finland: 08 00 11 49 10 Norway: 80 01 11 15France: 05 90 30 90 Portugal 05 05 49 35Germany: 01 30 18 75 24 Spain: 90 09 84 902Greece: 00 80 04 91 29 020 Sweden: 02 07 94 307UK: 08 00 96 90 95 Switzerland: 1 55 30 82Ireland 18 00 55 50 21 Iceland: 80 08 147or dial +49 6128 70 2618Please use these numbers for repair enquires only.

Replacement Parts and Kits

A1 - 2 68P02963C70-O

Latin America Region

Latin America Radio Support CentersThe Customer Support is available through the following service centers:

Warranty and Repairs:Motorola De Colombia Service CenterCarrera 7 No. 71-52Torre B piso 13Oficina 1301Bogota- Colombia(571) 376-6990

Motorola De Mexico Service CenterBosques de Alisos #125Col. Bosques de las LomasCP 05120 Mexico DF5252576700

Piece Parts:To order parts in Latin America and the Carribean:7:00 A.M. to 7:00 P.M. (Central Standard Time)Monday through Friday (Chicago, USA)

1-847-538-8023

Technical Support:https://businessonline.motorola.com, go to Contact Us to request technical sup-port

Motorola Parts (Accessories and Aftermarket Division AAD):Attention: Order Processing1313 E. Algonquin RoadSchaumburg. IL. 60196

Parts Identification:1-847-538-0021 (Voice)1-847-538-8194 (Fax)

Some replacement parts, spare parts, and/or product information can be ordered directly. If a complete Motorola part number is assigned to the part, it is available from Motorola Radio After market and Accessory Division (AAD). If no part number is assigned, the part is not normally available from Motorola. If the part number is appended with an asterisk, the part is serviceable by Motorola Depot only. If a parts list is not included, this generally means that no user-serviceable parts are available for that kit or assembly.

Replacement Parts and Kits

68P02963C70-O 3

Radio Replacement Parts List

Part/Kit Number MTH500 Model Description

0186163T070186163T08

Front Housing Assembly (Black)Front Housing Assembly (Blue)

0186630T01 Keypad Assembly

0186396T040186396T05

Back Housing Assembly (Black)Back Housing Assembly (Blue)

8586381J03 Antenna 380-400 MHz (R1)

0186613T010186613T02

0186239T010186239T02

Standard Battery Door Assembly (Black)Standard Battery Door Assembly (Blue)

Extended Battery Door Assembly (Black)Extended Battery Door Assembly (Blue)

7287702M01 LCD Module

FCN9090A Keypad Kit

FCN9797A LCD Kit

(See Service Replacement Kit Matrix below)

Main Board (R1)

Replacement Parts and Kits

4 68P02963C70-O

Accessories Replacement Parts List

Kit Number MTH500 Model Description

Batteries

FTN6030A Extended battery, 1100mAh, LiIon, Black (with battery door)

FTN6037A Extended battery, 1100mAh, LiIon, Blue (with battery door)

FTN6031A Standard battery, 800mAh, LiIon, Black (with battery door)

FTN6038A Standard battery, 800mAh, LiIon, Blue (with battery door)

Chargers

FLN9468A Dual Pocket Desktop Charger

SPN4716B Travel charger

SYN7455A Plug Adapter UK for travel Charger

SYN7456A Plug Adapter EU for travel Charger

FLN9469A Vehicular battery charger

Vehicular Adapters

FLN2850A Car Kit

FLN9569A Stand alone car cradle

Audio accessories

WADN4184A Headset with Boom mic and in line PTT

FLN9470A Headset with Boom mic (On Hold)

FLN9568A PHF

Carrying Accessories

FLN9476A Soft leather carry case

FHN6246A Belt clip

Others

FKN4897A Data cable

Replacement Parts and Kits

68P02963C70-O 5

Recommended Programming Equipment

Service Replacement Kit Matrix (1)

Note: All models listed in the Service Tanapa Column are not field replaceable for Latin America

Name Part NumberMTH500 CPS PMVN4065BData Cable FKN4897A

Sales Model Description

Service Tanapa

Description

MTH500 Black 380-400 MHzPT811F

FUF1208AS MTH500 BlackS/T R1 CLEAR

FUF1210AS MTH500 BlackS/T R1 TEA1

FUF1211AS MTH500 BlackS/T R1 TEA2

MTH500 Blue380-400 MHzPT811F

FUF1209AS MTH500 BlueS/T R1 CLEAR

FUF1212AS MTH500 BlueS/T R1 TEA1

FUF1213AS MTH500 BlueS/T R1 TEA2

Replacement Parts and Kits

6 68P02963C70-O

Replacement Parts and Kits

68P02963C70-O 7

Replacement Parts and Kits

8 68P02963C70-O

68P02963C70-O A2 - 1

Appendix 2 Test Equipment,Service Aids &

Tools

The table below lists the special test equipment required for servicing MTH500radios.

Name Part Number

Anritsu Digital Signal Generator MG3660A

Power Meter HP437B

Power Supply HP6032A

Universal Multimeter HP3457A

RF Probe HP85024A

Spectrum Analyzer HP8560E

R&S Audio Analyzer UPL16

Data Cable FKN4897

Flash/Data programming cable FLN9636

IFR System 2968

Test Equipment, Service Aids & Tools

A2 - 2 68P02963C70-O

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68P02963C70-O A3 - 1

Appendix 3 Self CheckError/Fail Code Tables

GeneralThis appendix describes the possible self check error codes for the MTH500Portable Radios.

Self Check Error Codes

Table 1. is the possible self check error (non fatal) codes for the MTH500 PortableRadios. No corrective action is required.

Table 2. is the possible self check fail (fatal) codes for the MTH500 Portable Ra-dios. The radio is inoperatable, the user should return the radio to Depot.

Table 2. Self Check Fail (Fatal) Codes

Table 1. Self Check Error (Non-Fatal) Codes

Message Cause

Error00001 A non-fatal error was logged during operation

Error00002 Codeplug error log validity error

Message Cause

Fail00100 Old CodePlug Version failure

Fail00200 New CodePlug Version failure

Fail00400 CodePlug Model failure

Fail00800 Codeplug validity error

Fail00801 CP - Unknown block

Fail00802 CP - Unknown eld

Fail00803 CP - Unknown ag

Connector Pin Functions

A3 - 2 68P02963C70-O

Fail00804 CP - Unknown format

Fail00805 CP - Invalid pointer

Fail00806 CP - Invalid path

Fail00807 CP - Invalid handler

Fail00808 CP - Invalid leght

Fail00809 CP - Invalid index

Fail0080A CP - Invalid offset

Fail0080B CP - Invalid header pointer

Fail0080C CP - Invalid block header

Fail0080D CP - Initialization failed

Fail0080E CP - Recovery failed

Fail0080F CP - Write failure

Fail00810 CP - Corrupted block

Fail00811 CP - Corrupted codeplug

Fail00812 CP - Radio Operattion System eror

Fail00813 CP - Lower layer error

Fail00814 CP - Too many arguments

Fail00815 CP - Log over ow

Fail00816 CP - Invalid check summ

Fail00817 CP - Not initilized

Fail00818 CP - Ambiguous code

Fail00819 CP - Invalid start entry

Fail0081A CP - Duplicate data

Fail0081B CP - Invalid version number

Fail01000 Flash checksum error

Fail02000 A fatal error was logged during operation

Fail10000 Handset communication error

FailF4000 Ergo pre-selftest codeplug error

FailF8000 Ergo pre-selftest invalid device error

Message Cause

68P02963C70-O A4 - 1

Appendix 4 Glossary

µC Microcontroller

ABACUS Analog to digital converter for a radio receiver.

A/D Analog to Digital

A/D Converter A device that converts an instantaneous dc voltage level to a corresponding digital value. Also known as CODEC.

ACELP Algebraic Code Excited Linear Prediction

AGC Automatic Gain Control

BDM Background Debug Mode

CPS Customer Programming Software

D/A Digital to Analog converter

D/A Converter A device that converts a digital value to a corresponding dc voltage value.

DQPSK Differential Quadrature Phase Shift Keying. A sub-class of the QPSK methods of transmitting data. Rather than using the absolute value of phase (as in QPSK), only the difference between the current value of phase and the previous value of phase are used. By using phase differences, the implementation is simpler (since an absolute reference source is not required).

DSI Data Serial Input

DSO Data Serial Output

DTMF Dual Tone Multi-Frequency

DSP Digital Signal Processor; microcontroller specifically tailored for signal processing computations.

EEPROM Electrically Erasable Programmable Read Only Memory. Integrated circuit used to store data, which can be erased by electrical methods.

GCAP Global Control Audio Power

IC Integrated Circuit

IF Intermediate Frequency

Glossary

A4 - 2 68P02963C70-O

IMIC Integrated Memory Interface

I & Q In-phase & Quadrature

LCD Liquid Crystal Device/Display

LED Light Emitting Diode

LO Local Oscillator

LPF Low-Pass Filter

OOIC On-Off Interface Circuit

PCB Printed Circuit Board

PLL Phase Locked Loop. A circuit in which an oscillator is kept in phase with a reference, usually after passing through a reference divider.

POR Power Reset

PTT Push-To-Talk

RESET Reset line; an input to the microcontroller that restarts execution.

RF PA Radio Frequency Power Amplifier

RTS Request-To-Send

SRAM Static-RAM chip used for volatile, program/data memory.

SSI Synchronous Serial Interface

RF Radio Frequency

STN Super Twisted Nematic

TDMA Time Division Multiple Access

TDS TETRA Diagnostics Software

TOT Time-Out Timer; a timer that limits the length of a transmission.

TranLin IC Transmit Linear IC

UART Universal Asynchronous Receiver Transmitter

VCO Voltage-Controlled Oscillator; an oscillator whereby the frequency of oscillation can be varied by changing a control voltage.

VVA Voltage Variable Attenuator

WPIC World Phone Integrated Circuit