F223 Service Manual

8/8/2019 F223 Service Manual

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F 223 SERVICE MANUAL

SERVICE MANUAL

Fax Model

F 223


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C O N T E N T SC O N T E N T S ............................................................................................................................. 1-2

1. PRECAUTIONS............................................................................................................................ 1-51.1. IMPORTANT SAFETY INFORMATION...................................................................................1-5

1.2. CAUTION FOR THE USED LITHIUM BATTERY ..................................................................1-51.3. CONFIGURATION................................................................................................................... 1-6

1.3.1. The content of package.........................................................................................................................................................1-6

1.3.2. Connections ............................................................................................................................................................................1-7

1.3.3. Loading the recording paper roll .......................................................................................................................................1-8

1.3.4. Overview of the operation panel. .......................................................................................................................................1-9

1.4. MAINTENANCE.....................................................................................................................1-11

1.4.1. Clearing jammed recording paper ...................................................................................................................................1-111.4.2. Clearing document jams ....................................................................................................................................................1-11

2. MECHANICS .................................................................................................................................2-1

2.1. PERSPECTIVE VIEW.............................................................................................................. 2-1

2.1.1. Outside view ...........................................................................................................................................................................2-1

2.1.2. Right perspective view ..........................................................................................................................................................2-2

2.1.3. Left perspective view ............................................................................................................................................................2-3

2.1.4. Top perspective view.............................................................................................................................................................2-4

2.2. OUTLINE OF MECHANISM .................................................................................................... 2-5

2.2.1. Transmission mechanism .....................................................................................................................................................2-5

2.2.2. Receiving mechanism ...........................................................................................................................................................2-6

2.2.3. Automatic document feeder .................................................................................................................................................2-7

2.3.

DISASSEMBLING OF MAIN PARTS...................................................................................... 2-82.3.1. Disassembling of the mechanism assy .............................................................................................................................2-8

2.3.2. Disassembling of the cover top assy.................................................................................................................................2-9

2 3 3 Disassembling of the operation panel assy 2-10


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3.2.1. Power on and system reset ..................................................................................................................................................3-2

3.2.2. Memory ...................................................................................................................................................................................3-2

3.2.3. Setting the Paper ...................................................................................................................................................................3-3

3.2.4. Setting the Document............................................................................................................................................................3-3

3.2.5. Scanning Keys & LCD indicator..........................................................................................................................................3-3

3.2.6. Scanning the Document ........................................................................................................................................................3-3

3.2.7. Printing ...................................................................................................................................................................................3-3

3.2.8. Transmission..........................................................................................................................................................................3-4

3.2.9. Reception ................................................................................................................................................................................3-4

3.2.10. Memory Back-Up...................................................................................................................................................................3-4

3.2.11. LSR Relay(MAIN B/D -K1) ...................................................................................................................................................3-4

3.2.12. Line Transformer (MAIN B/D-T1) .....................................................................................................................................3-4

3.2.13. Ringing Detection (MAIN B/D -U16) .................................................................................................................................3-4

3.2.14. Volume Control ......................................................................................................................................................................3-4

3.2.15. DP Dialing( Setting the DP mode) ......................................................................................................................................3-4

3.2.16. DTMF Dialing(Setting the DTMF mode).........................................................................................................................3-5

3.2.17. Transmitting a voice .............................................................................................................................................................3-53.2.18. Receiving a voice ...................................................................................................................................................................3-5

3.2.19. Hook detection .......................................................................................................................................................................3-5

3.3. POWER SUPPLY................................................................................................................... 3-7

3.3.1. Description .............................................................................................................................................................................3-7

3.3.2. Operation Principle for Each Circuit................................................................................................................................3-7

3.3.3. Input Cir cuit ...........................................................................................................................................................................3-7

3.3.4. EMI Filter Circuit .................................................................................................................................................................3-7

3.3.5. Input Rectifier and Smoothing Circuit. ..............................................................................................................................3-7

3.3.6. Transformer and Snubber Circuit .......................................................................................................................................3-7


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5.1. GENERAL ..................................................................................................................................5-15.2. TROUBLES SHOOTING & DIAGNOSIS THE SET ..........................................................................5-2

5.2.1. No operating at all. ................................................................................................................ 5-2

5.2.2. The machine does not transmit documents correctly. ............................................................ 5-2

5.2.3. The machine does not receive documents correctly. .............................................................. 5-25.2.4. Copies cannot be made when the START / COPY is pressed................................................. 5-3

5.2.5. The machine doesnt come out papers correctly. ................................................................... 5-3

5.2.6. Telephone doesnt operate when power turn off.................................................................... 5-3

5.3. TROUBLESHOOTING& DIAGNOSIS THE BOARD........................................................................ 5-4

5.3.1. MAIN board troubleshooting & diagnosis............................................................................. 5-4

5.3.2. OP Board Troubleshooting & diagnosis ................................................................................ 5-7

5.3.3. Power Supply Board Troubleshooting & diagnosis............................................................... 5-8

6. PART LIST.....................................................................................................................................6-16.1. MECHANICAL PARTLIST........................................................................................................... 6-1

7. CIRCUIT DIAGRAM ..................................................................................................................... 7-47.1. BLOCK DIAGRAM....................................................................................................................... 7-47.2. CONNECTION DIAGRAM ............................................................................................................. 7-57.3. MAIN BOARD DIAGRAM ............................................................................................................. 7-6


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1. PRECAUTIONS

1.1. Important safety information

To protect yourself and your fax machine against electrical shock, fire, power surges and any other risks, follow all instructions

and cautions.

1. Never install the fax machine in the following places:

-. Places exposed to direct sunlight

-. Moist, hot or dusty places

-. Unstable or vibrating places

-. Near water-. Near flammable liquid or gas.

-. Near large appliances such as air conditioners and refrigerators

-. Near electric apparatus such as radios and TV sets

-. Near magnetic bodies such as audio speakers

2. The environmental requirements for operation are as follows

-. Temperature: 5 ~ 35C

-. Humidity: 15 ~ 85%

3. Use a separate, grounded outlet at the specified voltage .

4. Never install or use the fax machine during a lightning storm.

5. Never block or cover slots and openings on the fax machine provided for ventilation.

6. Never use liquid or aerosol cleaners for cleaning.

7. Never disassemble or modify your fax machine.

8. Never open the cover of the fax machine during operation.

9. Never drop small pieces of metal on your fax machine.

10. Never pull on the power cord or place anything on the power cord.

11. Never pull the power plug out with wet hands.

12. To move the fax machine, disconnect the telephone line first, and then pull the power plug.

13. In case of malfunction, immediately turn off the fax machine, pull the plug, and call the Service Center.

Note:

Rapid temperature changes result in condensation forming on internal components. This may reduce printed image quality

or cause a malfunction. In this case, do not use the fax machine until the condensation has evaporated.


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1.3. Configuration1.3.1. The content of package


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1.3.2. Connections

Refer to the connection diagram as shown in the following illustration.

1. Connecting the power cordCheck the voltage of the power source as described on the label before connecting the power cord. Plug the

power cord into a grounded AC power outlet. This 3-prong power outlet is a safety feature to prevent fire or

electrical shock risks.

2. Connecting the handset

Connect one end of the curled cord to the handset and the other end to the jack on the left side of the fax

machine.

3. Connecting the line cord

Connect one end of the telephone line cord to a wall jack and the other end to the jack labeled LINE on the

backside of the fax machine.

4. Connecting an external TAM

To use an external TAM (Telephone Answering Machine) on the same telephone line with your fax machine,

connect it to the jack labeled TAD on the backside of the fax machine. To make the external TAM answerall incoming calls, change TAM ring count on your fax machine and select TAM mode.

(Refer to 9.8 Setting the number of rings for TAM MODE)


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1.3.3. Loading the recording paper roll

When you install the recording paper, turn the power off to prevent the shock of electric discharge.

1. Pull button as shown a nd open

The operation panel.

2. Remove package of new recording paper.

Adjust the recording paper as shown at right.

And then, place the recording paper roll into the

compartment.

3. Pull button as s hown and close

the operation panel.

4. Cut the recording paper


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1.3.4. Overview of the operation panel.

LCD: Displays various messages during operation and programming.

NUMERIC KEYS (0 ~ 9, *, #): Dials a phone/fax number directly.

Enter numbers or characters for registration.

ONE-TOUCH (01 ~05): Dials registered phone or fax number


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1.4. Maintenance

1.4.1. Clearing jammed recording paper

Follow instructions to clear the jammed recording paper.

1. Open the operation panel pulling the open button on the right side

2. Remove the jammed recording paper from the compartment.

3. Reinstall the recording paper (refer to the 1.4 Loading the recording paper roll).

1.4.2. Clearing document jams

1. Open the operation panel by pulling the open button on the right side

2. Remove the jammed documents.

3. Press stably on both sides of the operation panel to close it.


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2. MECHANICS

2.1. Perspective view2.1.1. Outside view

KEYTOP STOP

KEYTOP START

KEYTOP ONHOOK

KEYTOP TEN COVER BOTTOM

KNOB OPEN

PANEL OP

LCD

KEYTOP MENU(L)

KEYTOP OTC

KEYTOP VOLUME

GUIDE DOC(L)

HANDSET

KEYTOP ALPHA

KEYTOP REDIAL

TRAY DOC

COVER TOP

GUIDE DOC(R)


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2.1.2. Right perspective view


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2.1.3. Left perspective view


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2.1.4. Top perspective view


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2.2. Outline of mechanism

2.2.1. Transmission mechanism

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT

DOCUMENTIN

DOCUMENTOUT


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2.2.2. Receiving mechanism

As shown in Figure 2-2, the receiving unit is composed of TPH, Roller TPH, Driving Gears, Stepping Motor, PDS (Paper

Detect Sensor and so on.As the stepping motor turns on, paper roll moved the location between Roller TPH and TPH.

TPH transforms electric signals to thermal energy. And t he paper roll is printed

When the record is finished, the paper roll moved at the manual cutting part of the top panel.


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2.2.3. Automatic document feeder

As shown in Figure 2-3, the automatic document feeder is composed of the SPG PLT ADF, Rubber PAD ADF, Holder ADF,SPG ADF, BKT ADF.

Figure 2-3

The automatic document feeder transmits the pages one by one even though several sheets of the document are set.

Detected by DDS, the documents inserted are fed to the Rubber ADF one by one from the very bottom with rotation

Of Roller ADF.


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2.3. Disassembling of main parts

? Caution

- When disassembling or reassembling, be sure to unplug the power cord.

- When disassembling, remove the TEL line cable & Handset cord.

- Be sure to use screwdrivers suitable for the respective screws.

- Do not use damaged parts or screws.

- The use of damaged parts or screws may result in malfunction or failure of the machine.

- When disassembling or reassembling. Dont touch the boards.

Static electricity can damage parts.

2.3.1. Disassembling of the mechanism assy

1) Turn over the set and remove 2 screws securing the BKT BASE.

2) Disconnect all connectors connected to Main board, and remove all screws securing the board (Main: 4screws,

SMPS: 4screws). And then remove the board from the frame main ass y.


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2.3.2. Disassembling of the cover top assy

1) Disassembling the basic mechanism ASS'Y. (see 2. 3.1)

2) Remove 2 screws securing the cover bottom.

3) Disassembling cover top assy from cover bottom assy.


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2.3.3. Disassembling of the operation panel assy

1) Disassembling cover top assy.(See 2.3.2.)

2) Open the operation panel and then remove the 2 screws.

3) Disconnect a connector connected to operation panel board.4) Put operation panel on a clean and flat place, otherwise the operation panel can be damaged.

5) Remove 12 screws securing the operation panel board.

6) Disconnect the LCD module connector connected to operation panel board.

7) Remove operation panel board and LCD module from operation panel.


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2.3.4. Disassembling of the frame op assy

1) Disassembling the mechanism assy (See 2.3.1.)

2) Disassembling the cover top ASSY. (See 2.3.2.)

3) Remove 2 screws securing the cover bottom assy.

4) Disassembling cover top assy from cover bottom assy.


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2.3.5. Disassembling of the handset assy

1) Disconnect the Modular Jack of Curl Cord connected to the Phone Handset.2) The Handset is composed of a Handset Upper and a Handset Lower.

To separate them, remove a screw from the middle of the Handset Lower.

3) Press the middle of the Handset Upper slightly and pull it out from the Handset Lower


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2.4. How to replace main parts

2.4.1. How To Replace Thermal Print Head

1) Unplug the power cord.

2) Disassembling the basic mechanism ASS'Y. (See 2.3.1)

3) Disassembling the cover top ASSY. (See 2.3.2)

4) Disassembling the frame op ASSY. (See 2.3.4)

5) Remove 2 screws securing the frame op assy.

6) Disassembling the BKT TPH cover.

7) Apart TPH AS from BKT Receive in pull TPH while pressing it.

8) Disconnect 2 connectors connected to the TPH.

9) Remove 4 screws securing the BKT TPH (R)/(L).

10) Replace the new TPH.11) Check the copy condition.

* Check and see right -and-left of the connector when you insert the connector to the new TPH.


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2.4.2. How to replace CIS

1) Unplug the power cord.2) Disassembling the basic mechanism ASS'Y. (See 2.3.1)

3) Disassembling the cover top ASSY. (See 2.3.2)4) Open the operation panel.


6) Disassembling the motor assy.7) Disassembling the CIS assy from cover bottom.

8) Disconnect connectors connected to the CIS.9) Remove 4 screws securing the holder CIS.10) Replace the new CIS.11) Check the copy condition.


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2.4.3. How to replace roller TPH


3) Disassembling the cover top ASSY. (See 2.3.2)4) Open the operation panel.

5) Disassembling the roller TPH from cover bottom.6) Replace the new roller TPH.


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2.4.4. How to replace roller CIS


3) Disassembling the cover top ASSY. (See 2.3.2)4) Disassembling the frame op ASSY. (See 2.3.4)

5) Remove e-ring securing the roller CIS.6) Replace the new roller CIS.

Figure 2-11


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2.4.5. How to replace roller ADF

1) Unplug the power cord.

2) Disassembling the basic mechanism ASS'Y. (See 2.3.1)

3) Disassembling the cover top ASS'Y. (see 2.3.2)

4) Open the operation panel.


6) Disassembling the motor assy.

7) Remove the bush clutch ASF, gear ASF and bush ASF from roller ADF.

8) Disassembling the roller ADF.

9) Replace the new roller ADF.


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2.5. How to repair mechanism

When there are any problems in the mechanics, identify the symptom and check the following chart.

Symptom Cause Action1. Not close operation panel completely. - Close the operation panel completely.2. DDS does not detect document. - Check whether DDS Lever is bent

3. Deformation or stain of Spring PLT ADF. - Check the sensor operation.

4. Abrasion of Rubber ADF. (When pressing the DDS Lever, Roller ADF turns on.)

- Exchange the SPG PLT ADF.

1. Not operate when a

document is inserted.

- Exchange the Rubber pad ADF.

1. Roller ADF is stained. - Clean the Roller ADF with alcohol.

2. Deformation or stain of spring PLT ADF. - Exchange the SPG PLT ADF.2. Stepping motor revolves

but document is not inserted.3. Abrasion of Rubber ADF. - Exchange the Rubber ADF.

1. Roller ADF and Rubber ADF are dirty. - Clean the Roller ADF and Rubber ADF with alcohol

and a soft cloth.

2. Deformation of Spring PLT ADF. - Exchange the SPG PLT ADF.

3. Document are not inserted

one by one.

3. Abrasion of Rubber ADF. - Exchange the Rubber ADF.

1. CIS glass is dirty. - Clean the CIS glass

2. There is a chemical dregon TPH. - Clean the Roller CIS.

- Clean the TPH.4. Vertical black line.

- Exchange the TPH.

1. TPH is stained. - Clean the thermal head.

2. TPH is broken. - Exchange the TPH.5. Printed with missing a letter.

3. Friction torque of Damper gear unit isInsufficient. - Align again after checking alignment of TPH

1. Out of order PDS (Paper Detection

Sensor)

- Exchange the PDS.6. Non feeding of recording paper

or not inserted one by one.

2. Receive cover is not closed completely. - Close the Receiver Cover firmly.

7. Poor printing quality 1. TPH connector is not connected. - Check TPH connector.- Non printing on recording paper 2. Receive Cover is not closed firmly. - Close Receive Cover firmly.

- Printing too lightly partly. 3. TPH and BKT TPH do not set correctly. - Align again after check alignment of TPH.

- Printing too lightly entirely. 4. TPH pressure is uneven. - Exchange the new SPG TPH.


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2.6. Preventive maintenance

To continue efficient performance, check the following item.

2.6.1. Preventive Maintenance

1) Transmit Mechanical Part

- Clean the Roller CIS with alcohol on a soft cloth.

- Clean the CIS Glass with alcohol on a soft cloth.

- Clean the Sensor parts adhered to paper particles and dust with air cleaner.

2) Receive Mechanical Part

- Clean the Roller TPH with alcohol on a soft cloth.

- Clean TPH head with alcohol on a soft cloth.

- Clean the Sensor parts adhered to paper particles and dust with air cleaner.

3) An Article of Consumption

The approved products for the fax machine are as follows:

? Recording Paper Spec.

- Type : Thermal Paper

- Size

1. 210mm(W) 15,000mm(L)2. 210mm(W) 30,000mm(L)

- Thickness 0.057mm

2.6.2. Cleaning of Thermal Print Head

When this paper is used for a long time, the copy quality will deteriorate because the color former and paper particles have

adhered to head. When it happens, disassemblethe FAX and lightly clean the head with alcohol on a soft cloth.

Use only a soft cloth because the surface of the head is precisely coated and a rough cloth can cause damage to the head.

Never use benzene, thinner or water.

2.6.3. Cleaning of CIS Glass


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3. ELECTRICAL DESCRIPTION

3.1. Outline

SPEAKER

+24V : 1.2A

TONE & CID

BLOCK DIAGRAM

LCD 16 X 1

SMPS

RINGDETECTION

4

CID DETECTION

3

(Thermal Print Head)

-12V : 0.03A

RESET LOGIC

VIDEO & SCANNER PROCESSOR

(Document Position Sensor)

POWER SUPPLY

TPH

5

IAA(20415)

MODEM : 14.4Kbps

SLIDE B/D

SRAM

#

+3.3VCIRCUIT

INLET

32KB

LINESELETION

PDS

*

HOOK S/W

THERMAL PRINTER CONTROL

EEPROM

MOTOR

ADF

KEY MATRIX

PSTN

TAD

AC

128KB

TONE RINGER

(Scanner Control& VideoProcessing)

MICROPROCESSOR(MC24)CONTROL

MAIN

HANDSET

(Paper Detection Sensor)

HOOK B/D

6

DRIVER

POWER DOWN CXD9450INTERFACE

7

OP

2DDS

MODEM

+5V : 0.45A

VOLUME

SELECTION

TX MOTOR

SRAM BACK-UP

9

1

0

TRANSFORMER

8

(Document Detection Sensor)

LINEINTERFACE

PART

TEL/LINE

INTERFACE

RX MOTOR

TAD/EXT

REAL TIME MULTITASKING

DPS

H/S

(Automatic Document Feeder)

NETWORK

DIALERTONE/PULSE

CIS

Figure 3.1 Architecture of system

The Single-chip Fax Engine(CXD9450) provides design flexibility by virtue of its built-in peripheral functions (such as


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3.2. Main board

3.2.1. Power on and system reset

When the power cord is connected the set, the source(+5V,+24V, -12V) is supplied for each circuit from the main board.

The mRESET signal is generated by R2 and CE2 on the main board to reset I/O ports of the main board.

It goes to mRESET(MAIN B/D -U8-80 PIN) of main board which is FAX engine and then the RESET is maintained

that the output voltage is low level from U3.

After the ENGINE is initialized, ENGINE(MAIN B/D -U8) will check the status of SRAM before being idle.

If they have a wrong, the defaults of SRAM(MAIN B/D -U4) data write onto SRAM from CPU (MAIN B/D -U8-154

PIN).

Figure 3.2 SYSTEM RESET TIMING

3.2.2. Memory

. ROM(U 1)The ROM contains a 128 Kbytes programmable area.

It is capable of directly accessing of the addressing range from FE0000 to FFFFFF.

The ROM operates at the access time of 70 nsec without insertion of a wait cycle.


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3.2.3. Setting the Paper

The thermal paper is installed in the CONTROL-PANEL, PDS(Paper Detection Sensor) check the paper.

The PDS(MAIN B/D-U8-52PIN) signal is low-active.

3.2.4. Setting the Document

When a document is inserted to the document guide, the DDS(Document Detection Sensor) is detected to high level.

After the ENGINE(M1-U8-51 PIN ) detects the DD S signal, the output of ENGINE(M1-U8-53 PIN) is high level the

24V/ON signal and the 24V RELAY of POWER is on and then is supplied motor from main board.

TM[0..3](M1-U8-169, 168, 167, 166 PIN) that are driving motors will drive the TX motor in one- & two-phases.

The stepping motor pulls out a document to reading position precisely.

As soon as the document detect the DPS(Document Position Sensor), DPS signal(M1-U8-107 PIN) is to high level.

And then TM motor stop.

3.2.5.Scanning Keys & LCD indicatorT here are 28 keys composed of STOP, START/COPY, PHONE, etc. on op panel.

The ENGINE(MAIN B/D -U8) detects an address of keys through row(OPO[0..6]) and column(OPI[0..3]) in matrix.

The ENGINE input key matrix and process for each key mode or function.

Because this machine hold an data bus of OPO[0..6] in common, the data bus is capable of time division as the LCD

and KEY.

3.2.6. Scanning the DocumentWe use CIS (Contact Image Sensor) in order to scan a document in the machine.

When transmitting and copying a document, printing density makes the horizontal and vertical scanning.The horizontal scanning in FINE & PHOTO and STD(standard) is scanned in 8dots/mm. FINE mode is in 7.7 line/mm

and STD(standard) in 3.85line/mm in vertical too. To drive CIS, the CISON(MAIN B/D -U8-116 PIN) control signal

that is power of CISLED become to low level, i t turned the +24V(CI S) source on power supply unit .

After LED is on, CISTR (MAIN B/D -U8-118 PIN) and CISCLK(MAIN B/D U8-115 PIN) are supplied for CIS

and a analog data output is at CIS analog after scanned a line. After a line of data is scanned by CIS, the CISTR signal is

changed low to high and an image data output moves to the system. As soon as the CISTR signal is low to high,

a 1728 image data transfers into the processor with shifting bit by bit in serial.

A CIS image data that synchronized with CISCLK. ENGINE reads video data in each CISCLK time

and controls the transmission stepping motor in one- & two-phase driving methods when scanning a document.An reading video signals transfer into the VIN(MAIN B/D-U8-84 PIN).

3.2.7. Printing


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3.2.8. TransmissionAfter the ENGINE(MAIN B/D-U8) codes image data by M R/MH coding, is saved in SRAM(MAIN B/D-U4).

A coded image data that is saved SRAM(MAIN B/D -U4) transfer to IA(MAIN B/D -U7) by one byte at synchronizing

with PORI signal(MAIN B/D -U8-143 PIN).

The TXOUTP(MAIN B/D-U7-17 PIN ) signal with coded image data transmit TX Amp(MAIN B/D -U9).

To pass by filter the modulation signal, the real signals transmit through amplifier.

These signals through Matching Trans.(MAIN B/D-T1) transmit to the Tel. Line.

3.2.9. Reception

T his machine receives image data from Tel-line. Image data moves to IA(MAIN B/D -U7-9PIN) through the matching

trans.(MAIN B/D-T1) and analog switch (MAIN B/D -U10).

A coded image data that is moved through RX Amp (MAIN B/D -U11) and is transmitted IA(MAIN B/D -U7) in main

board.

The ENGINE(MAIN B/D -U8) through IA demodulated image data internally.This action is in 1 byte and resaved in SRAM (MAIN B/D-U4). A coded image data print in print method.

3.2.10. Memory Back-Up

When the power source(+3.3V) is below +2.9V, first RESET IC(MAIN B/D-U3) is turned to low level,

then SRAM(MAIN B/D-U4) is changed into memory retention mode.

That is to say, the power source is below +2.9V, the mRAMCS(MAIN B/D-U8-75PIN) that is used to chip selection pin

in a retention mode of the SRAM(MAIN B/D-U4) is set to low level.

At power down, the power of the SRAM(MAIN B/D -U4) is supplied from a back- up battery (MAIN B/D-BT1).

If the power of the battery is exhausted, a data on the SRAM(MAIN B/D-U4) is erasable easily.A service engineer should change the used battery.

3.2.11. LSR Relay(MAIN B/D-K1)

Switches the line from fax/Ext. telephone.

3.2.12. Line Transformer (MAIN B/D-T1)

Pass AC signal components to FAX and block DC signal components from the line.Match the impedance between the line and the system.

3.2.13. Ringing Detection (MAIN B/D-U16)


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3.2.16. DTMF Dialing(Setting the DTMF mode)

- POWER ON

First of all set the DTMF mode.

When you press a key, ENGINE(MAIN B/D -U8) detects the dial number in DTMF,

The DTMF output signal transfer from Matching Trans(MAIN B/D-T1) to line through IA(MAIN B/D-U7-17PIN).

- POWER OFF DIALER TONE generates a line because PHOTO COUPLER doesnt operate.

When you press a DIAL KEY, DIALER TONE IC outputs DTMF signal. This signal outputs through NETWORK IC.

3.2.17. Transmitting a voice

Voice signal from Handset is transferred to Network IC(MAIN B/D -U19). This signal is transferred to Tel. Line.

3.2.18. Receiving a voice

Voice signal received from Tel. Line is transferred to Network IC(MAIN B/D -U19).

3.2.19. Hook detection

If for calling phone lift the handset, the hook switch is operating(Off hook).

The engine(MAIN B/D-U8) is detected low signal the mHOOKD(MAIN B/D-U8-142PIN).


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3.3. POWER SUPPLY

3.3.1. Description

This is device is switching mode power supply that operates at the rating of AC 230V by the fixed frequency and

provides the output voltage of +24,+5,-12 to the system by the input voltage AC of 180~264V within the frequency

range of 47~63Hz. This power supply provides the power of normal 31.41W and peak 77.01W and protection

functions against fire and inflammation by operation of the protection circuit at the time of the short-circuit of the

load circuit and power sources.

3.3.2. Operation Principle for Each Circuit

- Input and EMI filter circuit

C1 LF2LF1F1

TNR1

R1

C2

C3

C4

LIVE

NEUTRAL

F/G

3.3.3. Input Circuit

This part is composed of Fuse, Varistor and Inlet in order to connect with AC Cord.

-Fuse(F1) protects it by open when the Power supply is abnormal.

-Varistor(TNR1) is a part of absorbing the surge voltage that flows in from AC input line.


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TH1BD1

C5

3.3.6. Transformer and Snubber CircuitThis part is consist of T1,C6,C7,R5,D1.

-Transformer(T1) transforms from the primary high voltage to the secondary low voltage through the insulation.

-Snubber Circuit is composed of C6,C7,R5,D1 and controls the surge voltage and current when this device generates

from switching.

R5C6

D1 (C7)

3.3.7. PWM & Main Switch

T1


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3.3.8. +5V Output Circuit

-D5 and C15 rectify and make smooth for AC power sources left behind from the primary.

-U4 as the static voltage IC provides the stable output of +5V.

-C16 is a capacitor for protecting the oscillation of U4.

3.3.9. -12V Output Circuit

-D7 and C12 rectify and make smooth for AC power sources left behind from the primary.

-U2 as the static voltage IC provides the stable output of -12V.

-C10 is a capacitor for protecting the oscillation of U2.

D5

D7

C21

IN OUT

GND

U4

C15 C16

C10C12

IN OUTGND

U2

C20

COM

-12V_30mA

+5_0.45A

3.3.10. +24V Output Circuit

-D6,C14 rectifies and makes smooth AC voltages left behind from the primary.

-R18,PC1,U3,R19,R15,R16,R17,R18 detects and compares the secondary voltage and transfer the signal to the primary.

-C11,R20 is for the phase correction.

-D9 is for the protect the spike at ON/OFF of Relay.

RL1

D9

R27C14

D6/A

+24V_1.2A


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4. S/W DESCRIPTION

4.1. Service options

- SERVICE OPTION IS COMPOSED OF 5 GROUPS, entering method is as follows: FUNCTION+REDIAL/P (3 Times, within 2 seconds)+7793

So, 0 SYSTEM INIT. is displayed on the LCD.

And thereafter, you can change parameter value.

- For example, if you want to change RECALL PAUSE TIME(3 min.) into RECALL PAUSE TIME(2 min.),

1st You have to enter service mode using upper method.

2nd Press 2 + START/COPY 2 REGULATION + 2. SELECT SVC : 01 appear respectively.

3rd Press 2 + 1 + START/COPY ( RECALL PAUSE TIME is SVC221 )

SVC NO 3 appears and you can current setting 3 .

Press 2 + START/COPY, and changing setting is finished.

4.1.1. Memory initial & list

1) ALL MEMORY INITIAL

- This function is SERVICE MODE GROUP >

Clears all data in S-RAM and set the default parameters in S-RAM .

2) PRINT OUT SERVICE PARAMETER LIST

- This function is SERVICE MODE GROUP >

This list shows the stored parameters in S-RAM of the unit.All parameters can be adjusted.

SERVICE PARAMETERS LIST

DATE/TIME : OCT/01 2001 00:35 NAME :

VERSION :

> SYSTEM INITIALIZE

> SERVICE PARAMETER LIST


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3) PRINT OUT SIGNAL LIST

- This list shows the contents of Protocol for last fax communication

SVC241 ------> 80 SVC242 ------> 11

SVC243 ------> 18 SVC244 ------> 44

SVC245 ------> 52 SVC246 ------> 21

SVC247 ------> 26 SVC248 ------> 21SVC249 ------> 26 SVC250 ------> 2

SVC251 ------> 50

> EXTENDED OPTION PARAMETERS

SVC301 ------> 5 SVC302 ---- --> 5

SVC303 ------> 0 SVC304 ---- --> 0

SVC305 ------> 1 SVC306 ---- --> 1

SVC307 ------> 1 SVC308 ---- --> 0

SVC309 ------> 0 SVC310 ---- --> 0SVC311 ------> 0 SVC312 ---- --> 0

> SPECIAL TEST MODES

SVC401 SVC402

SVC403 SVC404

SVC405 SVC406

SVC407 SVC408

SVC409 SVC410

SIGNAL LIST

DATE/TIME : OCT/01 2001 00:35 NAME :

VERSION :


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4.1.2. Parameters for REGULATION( GROUP > )

1) SVC201 : FAX SENDING LEVEL- Adjusts sending signal level for fax communication.

2) SVC207 : PULSE DIAL FORMAT(0:N, 1:N+1,2:10-N)

- Selects PULSE dial format for DP dialing.

3) SVC208, SVC209 : PULSE MAKE/BREAK TIME (unit msec)

- Adjusts PULSE MAKE/BREAK TIMEfor DP dialing.

4) SVC210 PULSE INTERDIGIT TIME(unit 100msec)- Adjusts PULSE INTER DIGIT TIME for DP d ialing.

5) SVC213, SVC214 : DTMF SIGNAL ON/OFF TIME (unit msec)

- Adjusts DTMF SIGNAL ON/OFF TIME for TONE dialing.

6) SVC215, SVC216 : DTMF HIGH/LOW GROUP LEVEL

- Adjusts DTMF HIGH/LOW GROUP LEVEL for TONE dialing.

7) SVC217 : FLASH RECALL TI ME(unit 10msec)

- Adjust FLASH RECALL TIME depending on the exchange

8) SVC218 : 1st DIGIT DELAY TIME (unit 100msec)

- Adjusts FIRST DIGIT DELAY TIME for dialing.

9) SVC219 : PAUSE TIME (unit 100msec)- Adjusts PAUSE TIME between dial digits.

In automatic dialing, if the fax machine encountered the pause character (not first pause character),

dialing is delayed by this interval .

10) SVC220 : RECALL COUNT

- Adjust RECALL COUNT in automatic fax transmission.

11) SVC221 RECALL PAUSE TIME ( it 1 i )


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4) SVC305 : CALLER ID TYPE

- You can set the caller ID type (BELLCORE/V.23/DTMF-A/DTMF-B).

NOTE: This option is adjusted according to regulations of each country.

5) SVC307 : PHOTO SHADING CORRETION ON/OFF- Selects whether adjust shading (1) or not(0), when scan document in the photo mode.

4.1.4. SPECIAL TEST MODES ( GROUP > )

1) SVC402 : SENSOR TEST

- Tests Document sensor/Paper sensor.

2) SVC403 : TPH PRINT TEST

- Tests TPH(Thermal Print Head) component .

3) SVC404 : MOTOR TEST

- Tests Tx & Rx motor.

4) SVC405 : 0 dBm 2100Hz TX TEST

- Sends 2100Hz -0dBm signal to adjust 0 dBm in H/W level.

5) SVC406 : DTMF TEST- Tests continuous Modem DTMF Tone transmission.

GROUP NO. ITEM RANGE(UNIT) DEFAULT

01 FAX SENDING LEVEL 0 ~ 15 (dBm) 9

02 MIN. RING FREQUENCY 13~70(Hz) 13

03 MAX. RING FREQUENCY 13 ~ 70 (Hz) 70

04 MIN. SIGNAL ON TIME 15, 20, 25, 90 (x 10ms) 20

05 MIN. SIGNAL OFF TIME 0 ~ 9 (x 100msec) 5

06 RING OVER TIME 00~99(sec) 7

07 PULSE DIAL FORMAT 0:N, 1= N=1, 2=10-N 0

08 PULSE MAKE TIME 00~99(ms) 33


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27 PSTN DIAL TONE FREQ

0.100Hz~550 Hz

1.300 Hz~550Hz

2.300~800Hz1

28 PSTN DT OVER TIME 00~99 (sec) 10

GROUP NO. ITEM RANGE(UNIT) DEFAULT

29

MIN. DT ON TIME

(CONTINUOUS MODE) 0 ~ 99 (x 100msec) 8

30MIN. DT ON TIME

(CADENCE MODE)0 ~ 99 (x 10msec) 90

31MAX. DT ON TIME


32MIN. DT OFF TIME


33MAX. DT OFF TIME

(CADEN CE MODE)0 ~ 99 (x 10msec) 35

34 CADENCE MODE CYCLES 0~9 335 PSTN MAX LOSS TIME 0 ~ 99 (x 10msec) 2

36 BUSY DETECT BEFORE 0.OFF, 1.ON 0

37 BUSY DETECT AFTER 0.OFF, 1.ON 1

38 1ST BUSY MIN. ON TIME 0 ~ 99 (x 10msec) 40

39 1ST BUSY MAX. ON TIME 0 ~ 99 (x 10msec) 80

40 1ST

BUSY MIN. OFF TIME 0 ~ 99 (x 10msec) 40

41 1ST

BUSY MAX. OFF TIME 0 ~ 99 (x 10msec) 80

42 2ND

BUSY MIN. ON TIME 0 ~ 99 (x 10msec) 11

43 2ND

BUSY MAX. ON TIME 0 ~ 99 (x 10msec) 1844 2

NDBUSY MIN. OFF TIME 0 ~ 99 (x 10msec) 44

45 2ND


46 3RD

BUSY MIN. ON TIME 0 ~ 99 (x 10msec) 21

47 3RD

BUSY MAX. ON TIME 0 ~ 99 (x 10msec) 26

48 3RD

BUSY MIN. OFF TIME 0 ~ 99 (x 10msec) 21

49 3RD


50 BUSY DETECTION CYCLES 0~9 2

51 SETTING THE T0 TIME 1~99 (x sec) 50

01 CIS SLICE LEVEL 0~9 502 PHOTO CIS SLICE LEVEL 0~9 5

03 MONITORING0.OFF, 1.ON,

2.ERROR0


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4.2. Error codes

1. Mechanical errors

Error Code Descriptions

#005 Document jam error during transmission

#007 Printing head over heated

#008 Paper out error

2. Transmission errors

3. Receiving errors


#152 Invalid command is received after fax machine goes to receiving mode

#153 Password does not match (Polling TX)

#154 No response from the remote party after fax machine goes to receiving mode


#102 No document in the document feeder after the fax goes to transmitting mode

#104 No send document because line condition is bad

#110 No response from the remote party after completion of data transmission

#114 Exceeding the transmission length of the one page (above 1m)

#115 Exceeding the transmission time of one page (over 8 min.)


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5. ELECTRICAL TROUBLE SHOOTING & DIAGNOSIS

5.1. General

Troubleshooting comprises 1. Troubles shooting & diagnosis the set and 2. Troubles shooting & diagnosis

the board .

If the machine fails to operate correctly, check items in the section 5.2 Troubles shooting & diagnosis the set .

If the trouble is not solved, check the items in the section 5.3 Troubles shooting & diagnosis the board.

Notes on Troubleshooting:

It is very important to understand a machines functions to fine out the cause of the malfunction when repairing any piece

of equipment. In addition, it is necessary to know the removal/replacement and check test procedure of machine.When repairing, observe the following precautions.

PCB(Printed Circuit Boards) must be handled with care.

If a person charged with static electricity touches a PCB, some of the circuit may be damaged.

Be sure to turn the power off when replacing any part of a machine.

After disassembling or replacing any parts, be sure to run a machine check and make any necessary adjustments.

Be careful not to lose any small parts, such to screws, washers, spring, etc.

A PCB should be wrapped in a conductive sheet whenever it is moved or left outside the machine.

Be careful not to short the battery on the PCB.

After trouble shooting, check whether there are no loose screws, washers, paper scraps, etc., left in the machine.Before disassembling or replacing parts, prepare an anti-static mat and appropriate tools.

This tools include : Screwdriver, small blade screwdriver and pliers

Initial Inspection

(1) Setting Environment

a. Use the correct voltage supply.b. The machine should be placed on a flat and stable surface.

c. The machine should be used within the following ambient conditions.


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5.2. Troubles shooting & diagnosis the set

5.2.1. No operating at all.

Check point SolutionsIs the power inserted correctly? Insert the plug correctly referring to the User Manual.

Is the voltage correct ly? Check the voltage by plugging another electrical

appliance into the socket.

Is the MAIN PCB-P101 connector of main board correct ly? Check the MAIN PCB-P101.

The MAIN PCB-P101,-P109 connector of main board insert

only the power cord.

Check the message of LCD(stand-by mode).

If the message of LCD is correct, contact P102,

The MAIN PCB-P103,-P104s connector to main board.And then the power cord insert.

Check the message of LCD(stand-by mode).

5.2.2. The machine does not transmit documents correctly.

- No transmission when the START / COPY is pressed.

Check point SolutionsAre the modular connectors connected correctly? Check the LINE modular connection referring to

the User Manual.Have you replaced the handset before pressing the

START/COPY?

Press the START/COPY before placing the handset back.

Is the setting document jam to the scan part? Re-insert the document in the document guide.

Is the MAIN B/D -P109 connector of main board correctly? Check the MAIN B/D-P109.

Is the MAIN B/D-P102 connector of main board correctly? Check the MAIN B/D-P102.

Is the MAIN B/D-U5 short of pin and pin? Check the MAIN B/D-U5.

Is the other partys facsimile(receiving side) compatible? Contact the other party and check.

- Document is loaded the document guide but not fed.Check point Solutions

Is the document size correct (within the range to be

transmitted)?

Check the document size referring to the User Manual.


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5.2.4. Copies cannot be made when the START / COPY is pressed.

Check point Solutions Is the document size correct (within the range)? Check the document size referring to the User Manual.

Are documents stapled or clipped? Try again after removing all paper clips or staples.

Is OUT OF PAPER displayed on the LCD? Insert the new paper roll to the Cover -Paper..

Is TPH OVERHEAT displayed on the LCD? Check the temperature of TPH.

Is the document copying blank paper? Copying the document, check the light of led of CIS.

Check the CISs harness that is connected to the CIS correctly.

Check the CISs harness that is connected to the MAIN B/D-P102.

Check the TPHs harness that is connected to the MAIN B/D-P105.

Check the TPHs harness that is connected to the TPH module.

5.2.5. The machine doesnt come out papers correctly.

Check point Solutions Is the machine jammed the paper? After opening Operation panel, exclude the jammed paper.

Even if insert the paper, RX m otor dont operating. Check the PDS.

Check the PDS harness that is connected to the MAIN B/D -P106.

Check the RX motors harness that is connected to the MAIN B/D-P104.

Is TPH OVERHEAT displayed on the LCD? Check the temperature of TPH.

5.2.6. Telephone doesnt operate when power turn off.

Check point Solutions Is MODULAR JACK correctly connected? Check the line terminal that is connected to the MODULAR JACK

correctly.

Are TEN keys correctly inputted? Check the harness that is connected to the MAIN B/D -P202.

Check the harness that is connected to the OP B/D -P503.


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5.3. Troubleshooting & diagnosis the board

5.3.1. MAIN board troubleshooting & diagnosis.

- Doesn't power on.

No. Check point Solutions1 Is the power of MAIN B/D-P101(+5V) normal? Check Power Supply.

2 Is the MAIN B/D -P109 connector correct ly? Check OP-Panel.

3 Is the 2nd pin of MAIN B/D -U2 (+3.3V) correctly? Check the MAIN B/D -U2.

4Is the 75th pin of MAIN B/D U8 signal correctly? Check the MAIN B/D U8(Engine).

Check the MAIN B/DU4(SRAM).

5Is the A[0..16], D[0..7] of MAIN B/DU8

signal correctly?

Check the MAIN B/D U8(Engine).

Check the MAIN B/DU4(SRAM).

6Is the 160th pin of MAIN B/DU8 signal correctly? Check the M MAIN B/D -Y1(32.256MHz).

Check the MAIN B/D -R20,-R21-C16,-C17,-C18,-L2.

7Is the 73rd pin of MAIN B/D U8 signal correctly? Check the MAIN B/D -Y2(32.768KHz).

Check the MAIN B/D -R26,-C19,-C20.

8Is the 61st pin of MAIN B/DU8 signal correctly? Check the MAIN B/D -U8(Engine).

Check the 12th pin of the MAIN B/D -P109.

9Is the 13th pin(+5V) of MAIN B/D -P109 signal

correctly?

Check the OPs harness that is connected to the MAIN

B/D -P109.

- Doesn't Display on LCD.

No. Check point Solutions1 Is the power of MAIN B/D-P101(+5V) normal? Check the Power Supply.

2 Is the MAIN B/D -P109 connector connected correct ly? Check the OP B/D.

3Is the 13th pin of MAIN B/D -P109(+5V) correctly? Check the OPs harness that is connected to MAIN B/D -

P109.

4 Is the 61st pin of MAIN B/D-U8 correctly? Check the MAIN B/D -U8.

5 Is the 5 ~ 11th pins of MAIN B/D-P109 correctly? Check the 94 ~ 100th pin of MAIN B/D U8.

6 Is the 12th pin of MAIN B/D -P109(LCDCS) correctwith pressing a key?

Check the 61st pin of MAIN B/D-U8.Replace the LCD.

7 Is the 6th pin of OP-P502 correct? Check the 6st pin of OP-P502.


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4) T PH clock (2 00 KHz)

No. Point to check Solutions

1

Does the 42nd pin of MAIN B/D -U 8 operate at 200

KHz?

Check the MAIN B/D -U8.

Check the 10th pin of MAIN B/D -P105.

Check the TPH harness that is connected to the TPH

module.

- Even if document insert to the document guide, TX motor doesnt operate.

No. Check point Solutions

1

Does the 16nd of MAIN B/D -P109(DDS) operate from

low level to high level?

Check the 2nd pin(+3.3V) of MAIN B/D-U2.

Check the OP harness that is connected to MAIN B/D -

P109.

Check the MAIN B/D-R81.

Check the 51st pin(DDS) of MAIN B/D -U8.

2 Does the 7,8th pin of the MAIN B/D-P101 come out+24V? Check the 53rd pin(24V/ON) of MAIN B/D-U8.Check the MAIN B/D-P101.

3

Does the 1,2,3,4th pin(mTM[0..3]) of the MAIN B/D -

P103 come out signal?

Check the 166-169th pins(TM[0..3]) of MAIN B/D-U8.

Check the +24V that is supplied to MAIN B/D-U5.

Check the input port(1,2,6,7th pin) of MAIN B/D-U5.

Check the output port(16,15,11,10th pin) of MAIN B/D -

U5.

Check the TX motor harness that is connected to MAIN

B/D -P103.

Check the TX motor.

- Even if paper insert to the Cover-Paper, RX motor doesnt operate.


1

Does the 3st of MAIN B/D -P106(PDS) operate from

high level to low level?

Check the 2nd pin(+3.3V) of MAIN B/D-U2.

Check the PDS harness that is connected to MAIN B/D-

P106.

Check the MAIN B/D-R80.

Check the 52th pin(PDS) of MAIN B/D -U8.

2Does the 7,8th pin of the MAIN B/D-P101 come out

+24V?

Check the 53rd pin(24V/ON) of MAIN B/D-U8.

Check the MAIN B/D-P101.Does the 1,2,3,4th pin(mRM[0..3]) of the MAIN B/D-

P104 come out signal?

Check the 162-165th pins(RM[0..3]) of MAIN B/D -U8.

Check the +24V that is supplied to MAIN B/D-U6.

Check the input port(1,2,6,7th pin) of MAIN B/D -U6.

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F223 SERVICE MANUAL

- Dont operate a copying of document.

1) In case of printing the Service List.


1Does the 115th p in(CISCLK) of MAIN B/DU8 come

out at 500 KHz?

Check the solution of CIS clock part.

2Does the 118th pin(CISTR) of MAIN B/DU8 come out

signal?


Check the 4th pin of MAIN B/D-P102.

3

Does the 84th pin(VIN) of MAIN B/D -U8 come out

signal?

Check the CIS harness that is connected to MAIN B/D-

P102.

Check the 1st pin of MAIN B/D-P102.

Check the MAIN B/D-C12,-R13,-R14,-D2,-D3.

Check the CIS harness that is connected to the CIS module.

2) In case of no printing the Service List.


1Does the 42nd pin(PCLK) of MAIN B/D-U8 come out

at 200 KHz?

Check the solution of TPH clock part.

2Does the 44th pin(PLAT) of MAIN B/D-U8 come out

signal?


Check the 3rd pin of MAIN B/D-P105.

3Does the 43rd pin(PDAT) of MAIN B/D-U8 come out

signal?

Check the TPH harness that is connected to MAIN B/D-

P105.

- Doesn't operate a Transmission of document .

No. Check point Solutions 1 Is the 0dB-2100Hz transmitting in service mode? Check the Tel line.

2

Does the TXA signal come out? Check the 7th pin of MAIN B/D-U9.

Check the 17th pin(TXOUTP) of MAIN B/D-U7.

Check the 146th pin(SOUT) of MAIN B/D -U8.

Check the MAIN B/D -T1.

Check the MAIN B/D -K1.

3

Does the RXA signal come out? Check the MAIN B/D -U11.

Check the 9th pin(RXIN) of MAIN B/D -U7.

Check the 147th pin(SIN) of MAIN B/D-U8.

- BEEP/RING isnt adjusted by a electrical volume.


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F223 SERVICE MANUAL

- Even if lift up handset, this machine doesnt detected the off-hook.


1Does the 142nd pin(mHOOKD) of MAIN B/D-U8

come out low level?

Check the 142nd pin of MAIN B/D-U8.

Check the connector ass y of MAIN B/D-P203.

- The others problems

No. Check point Solutions1 Not switched to FAX. Check the MAIN B/D -K1,-U17,-Q2 4.

2 Do not transmit and receive. Check the No.1 & RX, TX part of main board.

3 Do not Auto Start Check the No. 2.

4No DP dialing is possible while using TEN keys. Check the OP-Panel.

Check the MAIN B/D -Q24.

5 No DTMF dialing is possible while using TEN keys. Check the OP-Panel & No. 4.

6No operation of internal handset. Check the Tel. line modular jack.

Check the MAIN B/D-U19,-K1 & internal handset.

7Any voice isnt transferred to RX-unit. Check the MAIN B/D -U19.

Check the RX-unit.

8The Ring sound isnt heard. Check the MAIN B/D -U16,-ZD21,D22,C201,

-R202,-R201.

9 Dial tone does not hear when pressing the ON-HOOK. Adjust to the Electronic volume.

10After pressing the ON-HOOK, no switched to TEL. Check the MAIN B/D-mHOOK,-K1,U17,Q24.

Check the No. 6.

- Telephone doesnt operate when power turn off.

No. Check point Solutions1 Not switched to handset. Check the HOOK SW.

2No DTMF dialing is possible while using TEN keys. Check the OP-Panel.


3The Ring sound isnt heard. Check the SLIDE SW(SW1).

Check the MAIN B/D -U18,U20.

4Any voice isnt transferred to RX-unit. Check the MAIN B/D -U19.

Check the RX-unit.

5.3.2. OP Board Troubleshooting & diagnosis



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5.3.3. Power Supply Board Troubleshooting & diagnosis

NO Failure Type Check point

1 No Output power

1. Make sure that Power Cord is normally connector.

2. Make sure whether LINE Power is defective or not.

3. Make sure that Fuse is open.4. Make sure whether FET(Q1) is defective or not.

2No Output power of

+24V

1. Make sure that there are short -circuit between the terminals of output.

2. Make sure that Over Current Protection circuit normally operates when

over current flow in.

3. Make sure that Diode(D6) is failure.

4. Make sure the Base of TR(Q3).

5. Make sure the contacting point of RL1.

3

No Output power of

+5V

1. Make sure that there are short-circuit between the terminals of output.

2. Check that Regulator(U4) is normal.3. Check that Diode(D5) is normal.

4No output power of

-12V

1. Make sure that there are short -circuit between the terminals of output.

2. Check that Regulator(U2) is normal.

3. Check that Diode(D7) is normal.

5ON/OFF Fail of

+24V

1. Make sure that there are short - circuit between Base and GND of TR(Q3).

2. Make sure that TR(Q3) is normal.

3. Make sure that RL1 is normal.

6Power ON/OFF

Repetition

1. Make sure that there are short - circuit.

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6. PART LIST

6.1. Mechanical Part List


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F223 SERVICE MANUAL

F 223 6-1

NO Description XMC part number

1 WINDOW LCD 062F73037

3 PANEL OP 002F731944 LCD 123F73017

6 KEYTOP OTC 110F73102

7 KEYTOP TEN 110F73100

9 KEYTOP PHONE 110F73101

10 KEYTOP STOP 110F73099

11 KEYTOP START 110F73098

12 RUBBER PAD OP 019F73054

13 RUBBER PAD ADF 019F73055

14 SPG PLT ADF 009F73138

15 BKT ADF 030F73018

16 LEVER DPS 011F73045

17 LEVER DDS 011F73044

18 HOLDER ADF 147F73075

19 SPG ADF 009F73139

20 BKT HINGE L 030F73029

21 BKT TORION L -> SPG TORSION L 009F73142

22 BKT SUPPORT L 030F73021

23 SPG GND ROLLER 009F73140

24 GUIDE UPPER 038F73064

25 BKT SUPPORT R 030F73020

26 BKT TORION R -> SPG TORSION R 009F73141

27 BKT HINGE R 030F73019

28 ROLLER CIS 022F73120


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F223 6 - 2

29 BUSH CIS L 016F73050

30 BUSH ROLR L 016F73051

31 GEAR CIS 007F73135

32 GUIDE LOWER 038F73065

33 SPG TPH 009F7314334 BKT RECEIVER 030F73022

35 BKT TPH L 030F73024

36 BKT TPH R 030F73023

37 TPH 046F73026

38 BKT TPH COVER 030F73025

48 HOLDER CIS L 147F73076

49 CIS 130F73121

50 HOLDER CIS R 147F73077

51 SPG CIS 009F73144

52 MOTOR RX 127F73050

53 MOTOR TX 127F73051

54 BKT MOTOR 030F73026

56 GEAR 40 007F73137

57 GEAR 32 007F73136

59 BUSH OILNESS 016F73055

60 GEAR TPH 007F73138

61 ROLLER TPH 022F73122

63 BKT LOCKER 030F73027

64 COVER PAPER 002F73196

65 PDS SENSOR AS 130F73122

66 COVER GEAR 002F73198

68 LINE CORD 117F73072

70 COVER BOTTOM 002F73195


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F223 6 - 3

71 KNOB OPEN 003F73038

73 SPG PLT LOCKER 009F73146

76 BUSH CLUTCH ASF 016F73054

77 SPG CLUTCH ASF 009F73145

79 BUSH ROLR R 016F7305280 ROLLER ADF 022F73121

81 BUSH ASF 016F73053

82 PCB MAIN AS 140G73198

83 SMPS 105F73050

84 BKT BASE 030F73028

86 TRAY DOC 050F73039

87 GUIDE DOC L 038F73066

88 GUIDE DOC R 038F73067

89 COVER TOP 002F73197

90 LEVER HOOK 011F73046

92 SPEAKER 130F73123

93 SPG PLT SPEAKER 009F73148

94 GEAR ADJUST common with L-711

95 SPG ADJUST 009F73147

96 OP PCB AS 140G73199

IC EEPROM 133F73182

H/S CORD 117F73073

RX UNIT (Gear Drive Unit) 007F73139

OP AS (Operation Panel assy) 002F73199

HANDSET ASSY 110F73097

SHFT ADF 006F73030

NO.


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F223 7 - 4

7. CIRCUIT DIAGRAM

7.1. Block diagram

KEY MATRIXDDS

TRANSFORMER

MODEM

TX MOTOR

MAIN

INTERFACE

TAD/EXT

1 2

H/S

(Automatic Document Feeder)

(Document Detection Sensor)

PART

TEL/LINE

VOLUMESELECTION

RX MOTOR

REAL TIME MULTITASKING

SPEAKER

+5V : 0.45A

RINGDETECTION

TONE & CID

4LCD 16 X 1

9

RESET LOGIC

CIS

(Paper Detection Sensor)

5

NETWORK

CID DETECTION

+3.3VCIRCUIT

+24V : 1.2A

(Thermal Print Head)

8

DIALERTONE/PULSE

MODEM : 14.4Kbps

SLIDE B/D

SRAM

POWER SUPPLY

BLOCK DIAGRAM

MICROPROCESSOR(MC24)

3

#

VIDEO & SCANNER PROCESSOR

SMPS

32KB

TONE RINGER

(Document Position Sensor)

TPH

HOOK B/D

HOOK S/W

-12V : 0.03A

EEPROM

THERMAL PRINTER CONTROL

7

MOTOR

PSTN

ADF

6

TAD

DRIVER

IAA(20415)

128KB

AC

LINESELETION

(Scanner Control

& VideoProcessing)

PDS

CONTROL

INLET

HANDSET

LINEINTERFACE

*

POWER DOWN CXD9450INTERFACE

0

SRAM BACK-UP

OP

DPS


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F223 SERVICE MANUAL

F 223 7-5

7.2. Connection diagram

T

.P

.

H

P103

4

3

1

16+24V

3

1

13

DB6

16DB7

3

2

VCC

LIVE

+24V

2

4

14

P109

OPO2

DGND

VOL2

GLED(GND)

VIN

TAD OR EXT.TEL

10

INT. TELHANDSET

1

8

6

32

18

THD

PAPER

15

7

WHITE

AGND

GND

NEUTRAL

+24V

mRM0

3

1

2

5

mHOOKD

VOL1

VCC

5

AGND

8

4

3

4

1110

6 L CDCS

REC-

P206

-12VA

TM

2

mTM0

6

5

54

10

1

4

NC

2

CISCLK

3

MIC-

SPEAKER

P106

3

OPO1

7 DI

6+24V

DGND

CIS

P204

6OPO0

2

VOLUME

4

mSTB1

F.G

mTM1

4

1

2

1

POWERDOWN

GREEN

3

TEL-LN

+24V

6

2

3

PDS

P202

12

OPO0

9

7

8

14

SIG

7

R4

1

2

1

mSTB2

2

+24V

2

5

10

P501

7

1

OP

PAN

EL

9

OPI1

2

TEL

MOTOR

DGND

6

2

OP

P502A

1

7

5CLOCK

OPO1

R3

1

TX

mLATCH VDD

mTM2

NC

6

11 11OPO5

CONTRAST

9

3

3

1

4

OPO4_RS

VCCDGND

DDS

RX

BPLAT6

6

R2

13

-

CIS

CLK TM

mTM3

7

4

+24V

5

18

2

OPI3

DGND

12

4

VCC

PO

WER

1

7

5

4

2

DGND

HOOK

DG24DG24 VLED(+24V)

2

R1

VH DGND

6

+24V6

DG24

6

14

4

17

1

DGND

BLACK

3

2

9

2

14

MJ1

-

2

HOOK

S/W

BmSTB1

9 T.P.H

1

5

SPKOUT

C3

POWER

VH DGND

mRM33

17

8

MJ3

3

1

1

5

8

5

LCD

VCC

6

1

RS4 3

PAPER

9

5

12

P105

3

C2

DB4

5

+24V

PD01

MOTOR

mRM2

5

5

2

2

MJ2

P203

2

5

1

3

OPO4_RS

M

ODU

LA

R

VO

DETECTION

2

4

BmSTB0

13

5

C1

SENSOR

DGND

RED

6

+24V

VH

RM

5

1

2VCC

E

SENSOR

2

LINE

1

4AC

OPI2 VCC

DPS

OPO3

3

7

15

4

MIC+

DECTECTOR

-

4

CONNECTION DIAGRAM

P104

mSTB4

4

12

4

P

2

0

1

DB5

1

1

2

7

7

31

16

1SPEAKER

2

DG24

BPDATVCC

4

LCDCS

SLIDES/W

6

32

mSTB3

7

BmSTB0

11

9

OPO2

1

10

3

DGND 6

3

15

LCD

1

SI

3

13

NC

5

7

TM

P101

MAIN

PD02

4

BmSTB1

OPI0

PANEL

8

8

24V/ON

VH

2

1

mRM1

R/W

8

P503

GND

CISON

-

3

7

6

MOTOR

BOARD

MOTOR

GND

6

1

+24V

BPCLK

16 X 1

OPO6

3

P502

P102

DGND

AC INPUT

5

3

5

P108

3

8

OPO3

7

CISTR

4

H/SMOD.

12

REC+


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F223 SERVICE MANUAL

F 223 7-7

Documents

F223 Service Manual