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Maintenance & Service GuidePresario Series

Models : 1270, 1670, and 1675

|Home Page |Notice | Preface | Product Description | Troubleshooting

Illustrated Parts Catalog | Removal & Replacement Procedures|SpecificationsPin Assignments|Battery Pack Operations

Models and

Features

Controls and

Lights

Front Bezel

Lights

Front Bezel

Buttons

Left Side

Components

Right Side

Components

Bottom of

Unit

Rear

Connectors

Power

Management

f Wi d

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Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications

Pin Assignments|Battery Pack Operations

NoticeThe information in this guide is subject to change without notice.

COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OREDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL

OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING,PERFORMANCE, OR USE OF THIS MATERIAL.

This guide contains information protected by copyright. No part of this guide may bephotocopied or reproduced in any form without prior written consent from CompaqComputer Corporation.

1998 Compaq Computer Corporation.All rights reserved. Printed in the U.S.A.

Compaq, Presario Series Registered U. S. Patent and Trademark Office.

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Preface

This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing the Compaq

Presario Series Portable Computers.

Compaq Computer Corporation reserves the right to make changes to the Compaq Presario Series Portable Computerswithout notice.

S y m b o ls

The following words and symbols mark special messages throughout this guide.

WARNING: Text set off in this manner indicates that failure to follow directions in the warning could result in bodily harm or loss oflife.

CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of data.

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Product DescriptionModels and

Features

Controls and

Lights

Front Bezel

Lights

Front Bezel

Buttons

Left Side

Components

Right Side

Components

Bottom of

Unit

Rear

CompaqPresarioSeriesPortableComputer is a

continuationof the newgeneration ofmultimediaportablecomputerswith aninnovative

integrateddesign,outstandingaudio andvideo,advanced corefeatures and

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Troubleshooting

Preliminary

Steps

Clearing the

Power-On

PasswordPow er-On Self

Test (POST)

Compaq

Diagnostics

Diagnostic Error

Codes

Troubleshooting

Without

Diagnostics

Solving Minor

This section covers troubleshooting information for the Compaq PresarioSeries Portable Computers. The basic steps in troubleshooting include:

1. Follow the Preliminary Steps.

2. Run the Power-On Self-Test (POST).

3. Follow the recommended actions described in the diagnostictables, if you are unable to run POST or if POST displays anerror message.

When following the recommended actions in the Sections on

POST and Diagnostic Error Codes perform them in the order

listed. Rerun POST after each recommended action until theproblem is solved and no error message occurs. Once theproblem is solved, do not complete the remainingrecommended actions.
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I llustrated Parts Catalog

System Unit

Boards

Display

Assembly

Mass Storage

Devices

Miscellaneous

Cable Kit

Miscellaneous

Hardware KitMiscellaneous

Plastics Kit

Miscellaneous

Parts

This section provides an breakdown and identifies the spare parts orderingnumber associated with each item(s) for the Compaq Presario Series PortableComputers.
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Removal and Replacement Procedures

This section explains the removal and replacement procedures for the computer.

Serial Number Location

Dis a s s e m b lyS e q u e n c e

Electrostatic

Discharge

Service

Considerations

Cables andConnectors

Preparing the

Computer for

Disassembly

Battery Pack
http://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.html

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Illustrated P arts Catalog | Removal & Replacement Procedures|Specifications


Specifications

This chapter covers the following specifications of Compaq Presario Series Portable Computers:

q Computer models

q Physical and environmental

q System Interrupts

q System DMA

q System I/O Address

q System Memory Catalog

q Display

q Memory expansion

q Diskette drive

q Hard drive

q DVD or CD drive

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Connector Pin AssignmentsThis appendix provides connector pin assignment tables for Compaq Presario Series PortableComputers. For more information on connectors, refer to the section on Rear Connectors.

NOTE: The signals in all tables of this appendix are considered active high unless otherwiseindicated by an asterisk (*).

Parallel Connector

Pin Signal P in Signal

1 Strobe* 10 Acknowledge*

2 Data Bit 0 11 Busy

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Battery Pack Operating Time

This appendix covers the following information concerning battery pack operating time:

q Increase battery pack operating timeq Conditioning a battery packq Disposal of a used battery pack

I n c re a s in g B a t t e ry P a c k O p e r a t in g T im e

Battery pack operating time differs depending on several variables. To avoid unnecessary replacement, consider thefollowing variables when determining how long a charged battery pack should last:

q Power management settings

q Hardware configuration

q Software applications

q Installed options

q Display brightness

q Hard drive usage

q Changes in operating temperature

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|Home Page |Notice | Preface | Product Description | TroubleshootingIllustrated Parts Catalog | Removal & Replacement Procedures|Specifications


Models and Features

Models andFeatures

Controls and

Lights

Front Bezel

Lights

Front Bezel

Buttons

Left Side

Components

Right Side

Components

Bottom of

Unit

R

Compaq Presario Series Portable Computer Models

Model 1675 Model 1670

Display 14. 1" TFT 13.3" TFT

Processor AMD-K6 380-Mhz MMX AMD-K6 350-Mhz MMX

Cache 1-MB 1-MB

Hard Drive 6.4-GB 4.3-GB

DVD or CD Drive 2x DVD 24x CD

Modem 56.0 Kbps Data/Fax with PCI 56.0 Kbps Data/Fax with PCI

System Memory 64-MB 64-MB

Model1270

Display 12. 1" TFT

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Controls and Lights

Models and

Features

Controls andLights

Front BezelLights

Front Bezel

Buttons

Left Side

Components

Right Side

Components

Bottom of

Unit

Rear

1. Display

2. Power(On/Off)Button

3. Keyboard

4. Touch Pad

5. Touch PadButton (Left)

6. HeadphoneJack

7. MicrophoneJack

8. Touch PadButton (Right)

9. IntegratedSpeakers andPorts

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Front Bezel Lights

Models and

Features

Controls and

Lights

Front BezelLights

Front Bezel

Buttons

Left Side

Components

Right SideComponents

Bottom of

Unit

Rear

1. Power Light

2. BatteryCharge Light

3. Power Cord

Light

4. Num LockLight

5. Cap LockLight

6. Scroll LockLight

M i & S i G id

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Front Bezel Buttons

Models and

Features

Controls and

Lights

Front BezelLights

Front BezelButtons

Left Side

Components


Bottom of

Unit

Rear

1. InstantInternet AccessButton

2. Instant

Search Button3. VolumeDown Button

4. ScrollUp/DownButton

5. Volume UpButton

6. Secure E-CommerceButton

(or favoriteWeb site)

7. Instant E-Mail Button

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Right Side Components

Models and

Features

Controls and

Lights

Front Bezel

Lights

Front Bezel

Buttons

Left Side

Components


Bottom of

Unit

Rear

1. BatteryCompartment

2. DVD or CDDrive Manual

Eject Hole

3. DVD or CDDrive EjectButton

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Bottom of Unit

Models and

Features

Controls and

Lights

Front Bezel

Lights

Front Bezel

Buttons

Left Side

Components

Right Side

Components

Bottom ofUnit

R

1. MemoryCompartmentDoor

2. Stand Feet

Maintenance & Service Guide

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Rear Connectors

Models and

Features

Controls and

Lights

Front Bezel

Lights

Front Bezel

Buttons

Left Side

Components


Bottom of

Unit

RearConnectors

1. AC Adapter

2. UniversalSerial Bus

3. Security Slot

4. Serial Port5. PortReplicator

6. ExternalMonitor Port

7. ParallelPrinter Port

8.Keyboard/MousePort

9. Modem Jack


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Pow er Management for Windows 98

The following power management features are available for conserving AC power and extending battery operating time:

q Power Management Settingsq Sleep

q Hibernation

q Battery operating time

q Rebooting After a Lockup

q Servicing Your Computer - Full Off Mode

Po w e r Ma n a g e m e n t S e t t in g s

Depending on your patterns of computer use, you can set different levels of power management. These different powermanagement levels can be activated based on the amount of time passed since the last system activity. System activityexamples include keyboard or mouse movement, CD or DVD playback (while under program control that monitors Sleep),and modem use.

You can select different conditions or power schemes through Power Management.The optional settings are Home/ OfficeDesk, Portable/ Laptop, and Always On. From the default settings, you can change the following settings:

q the System goes to Sleep (Standby) modeq the screen times out and goes blankq the hard drive spins down

Each of these system components will go to sleep after the selected or default periods of inactivity. (The setting for harddrive must be less than or equal to the setting for System.)

M i t & S i G id

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Preliminary Steps

Before running POST, complete the following preliminary steps:

1. If a power-on password has been established, type the password and press the Enter key. Ifthe password is not known, clear the password.

2. Run Computer Checkup.

3. Turn off the computer and its external devices.

4. Disconnect any external devices that you do not want to test. Do not disconnect the printer ifyou want to test it or use it to log error messages.

IMPORTANT:If the problem only occurs when an external device is connected to the computer,the problem may be related to the external device or its cable. Verify this byrunning POST with and without the external device connected.

5. Install loopback plugs in the serial and parallel connectors if you would like to test these ports.


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Presario SeriesModels : 1270, 1670, and 1675




Power-On Self Test (POST)

R u n n i n g P O S T

To run POST, complete the following steps:

Turn off the computer, then turn on the computer.

If POST does not detect any errors, the computer will not beep. This indicates successful completion of POST test. POST hasrun successfully and boots from the hard drive (or from a bootable diskette if one is installed in the diskette drive).

If POST detects errors, the errors are indicated by screen and/or audible messages. Refer to "Power-On Self-Test (POST)Codes" in the tables for a list of POST codes and their relevant descriptions.

NOTE:If the system is not functioning well enough to run POST, or if the display is not functioning well enough to showPOST error messages, refer to the Troubleshooting tables.

Pow er-On Self-Test Messages

102-System Board Failure

Probable Cause Recommended Action

DMA, timers, etc. Replace the system board.

162-System Options Not Set

Probable Cause Recommended Action


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Clearing the Power-on Password

Clearing the power-onpassword requires removing allSetup attributes that areprogrammed in the CMOS. The

RTC battery is located on

the system board.

If the password is not known,clear it by performing thefollowing steps:

1. Turn off the computer.

2. Disconnect the power cord.

3. Remove the battery pack.

4 Remove the Palmrest Cover


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Compaq Diagnostics

Compaq Diagnostics is installed on the hard drive of the computer. Run the Diagnostics utilitieswhen you want to view or test system information and if you have installed or connected devices.If you run Compaq Diagnostics from a diskette, ensure that it is version 10.11 or later.

The Diagnostics menu includes the following utilities:

s Computer Checkup (TEST)

s View System Information (INSPECT)

s Prepare Computer for a Compaq Service Call (RemotePaq)

If you have a problem you cannot solve, run the Diagnostics utilities before you call for support.Run Computer Checkup and select to save the device list to a file and to print or to save the log of

errors. Run the View System Information (INSPECT) utility and select to print or to save thatinformation. Have the files or the printed information available when you call for support.

Co m p u t e r Ch e c k u p ( TES T )

Computer Checkup (TEST) determines whether the various computer components and devices are

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Contacting Compaq Support

Obtain the following information before contacting Compaq Reseller Support:

q Product nameq Product serial numberq Purchase dateq Conditions under which the problem occurredq Any error messages that have occurredq Hardware configurationq Type of printer connectedq Hardware/software being usedq Printed result of Computer Checkup (TEST)q Printed copies ofCONFIG.SYS and AUTOEXEC.BAT files, if possible

S h ip p in g P re p a ra t io n

To ship the computer, complete the following steps:

1. Back up the critical hard drive files. Ensure that backup tapes/diskette are not exposed to


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Illustrated Parts Catalog | Removal & Replacement P rocedures|Specifications


Boards

System Un it

Boards

Display

Assembly

Mass Storage

Devices

Miscellaneous

Cable Kit

Miscellaneous

Hardware Kit

Miscellaneous

Plastics Kit

MiscellaneousParts

Documentation

and Software

DescriptionSparePartNumber

1.Heatspreader

122702-001

2. VoltageConvertorBoard

352891-001

3. Modem56KData/Faxw/o SRAM

400445-001

4. ProcessorAMD P350-Mhz(Models:1270 and

1670)ProcessorAMD P380-Mhz(Model:1675)

122698-001

123923-001

5. SystemBoard


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System Unit

Boards

DisplayAssembly

Mass Storage

Devices

Miscellaneous

Cable Kit

Miscellaneous

Hardware Kit

Miscellaneous

Plastics Kit

Miscellaneous

Parts

Documentation

and Software

DescriptionSparePartNumber

1. Display14.1 TFT(Model:1675)

118165-001

2. Display13.3 TFTw/LVDS(Model:1670)

123924-001

3. Display12.1 TFTw/LVDS(Model:1270)

387544-001

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Mass Storage Devices

System Unit

Boards

Display Assembly

Mass Storage

DevicesMiscellaneous

Cable Kit

Miscellaneous

Hardware Kit

Miscellaneous

Plastics Kit

Miscellaneous

Parts

Documentation

and Software

Use the scroll down menu for the description and spare partnumber.

1. 4.3-GB Hard Drive 123927-001 (Models: 1270 and 1670)

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Miscellaneous Hardware Kit

System Unit

Boards

Display

Assembly

Mass Storage

Devices

Miscellaneous

Cable Kit

MiscellaneousHardware Kit

Miscellaneous

Plastics Kit

Miscellaneous

Parts

Documentation

and Software

MiscellaneousHardware Kit

Spare Part Number:346853-001

Description Quantity

1. HardDriveMounting

Bracket

1 each

2. LCDGuide FPC

1 each

3. SpringTorsionPCMCIA

4 each

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Miscellaneous Parts

System Unit

Boards

Display

Assembly

Mass Storage

Devices

Miscellaneous

Cable Kit

Miscellaneous

Hardware Kit

Miscellaneous

Plastics KitMiscellaneousParts

Documentation

and Software

Use the scroll down menu for the description andspare part number of spare parts Not Shown.

MiscellaneousParts

1. ACAdapter

298239-001

2. PortReplicator

102270-001

Miscellaneous Screw Kit (Not Shown) 330959-001


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Documentation and Software

System Unit

Boards

Display

Assembly

Mass Storage

Devices

Miscellaneous

Cable Kit

Miscellaneous

Hardware Kit

Miscellaneous

Plastics Kit

Miscellaneous

Parts

Documentationand Software

Description Spare Part Number

Quick Restore CD, Belgium Windows 98 Info. Not Available

France Windows 98 Info. Not Available

Germany Windows 98 Info. Not Available

Netherlands Windows 98 Info. Not Available

UK Windows 98 Info. Not Available

Quick Reference Guide Info. Not Available

QuickFind for Windows, North America, Latin America, Asia

Pacific

Info. Not Available

QuickFind for Windows, Europe, Middle East, Africa Info. Not Available

*QuickFind is updated monthly. To complete the QuickFind part number, add thesuffix from the table below for the desired month. If you do not specify the 3-digitsuffix, the default is the current month in which the order is placed.

QuickFind Part Number Suffix

Suffix Month Suffix Month

-001 January -007 July

-002 February -008 August

-003 March -009 September

-004 April -010 October


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Electrostatic Discharge

A sudden discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs.An electronic device exposed to electrostatic discharge (ESD) may not be affected at all and willwork perfectly throughout a normal cycle. Although, it may function normally for a while, thendegrade in the internal layers, reducing its life expectancy.

Networks built into many integrated circuits provide some protection, but in many cases, thedischarge contains enough power to alter device parameters or melt silicon junctions.

Generating Static

The table shows how different activities generate static electricity and at different electrostaticvoltage levels.

Typical Electrostatic Voltages


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S e rv ic e Co n s id e ra t io n s

Listed below are some of the considerations that you should keep in mind during the disassemblyand assembly of the computer.

T o o l a n d S o f t w a re R e q u ire m e n t s

To service the computer, you need the following:

q Compaq screwdriver kit (Spare Part No. 161946-001)q Torx T-9 screwdriverq 3/16-inch and 5mm nut drivers (for screwlocks and standoffs)q Small, standard screwdriverq Small, Phillips screwdriverq Diagnostics software

S c r e w s

The screws used in the computer are not interchangeable. If an incorrect screw is used during thereassembly process, it can damage the unit. Compaq strongly recommends that all screws


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Ca b le s a n d Co n n e c t o r s

Most cables used throughout the unit are ribbon cables. Cables must be handled with extreme care to avoid damage. Applyonly the tension required to seat or unseat the cables during insertion or removal from the connector. Handle cables by theconnector whenever possible. In all cases, avoid bending, twisting, or tearing the cables, and ensure that the cables are

routed in such a way that they cannot be caught or snagged by parts being removed or replaced.

C a b l e s

Use the following precautions when handling cables to avoid damage to the cable or computer:

q Always handle cables by their connectors.q Avoid bending, twisting, or pulling on the cables.

q

Apply minimum required force when seating or unseating the cables from their connectors.q Place the cables in such a manner that they cannot be caught or snagged by parts being removed or

replaced.q Handle flex cables with extreme care; they can tear easily.

CAUTION:When servicing these computers, ensure that cables are placed in their proper location duringthe reassembly process. Improper cable placement can cause severe damage to the unit.

S e le c t t h e d e s ire d illu s t r a t io n .

Removing a Cable from a ZIF Connector.


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The computer uses a zero insertion force (ZIF)connector for the keyboard cable to the system board.To remove a cable from a ZIF connector, lift bothcorners of the ZIF connector and slide simultaneouslywith constant light force.

CAUTION:A ZIF connector and itsattached cable can be easily damaged.Handle only the connector slide whenremoving or replacing a cable. Never pullor twist on the cable while it isconnected.

CAUTION:When servicing thiscomputer, ensure that cables are placedin their proper location during thereassembly process. Improper cableplacement can damage the computer.

Back to Cables and Connectors.

M inten n e & Se i e G ide

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The ribbon cable position for the CD or DVD drive.

Maintenance & Service GuideP i S i

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The ribbon cable position for the diskette drive.


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The cable position for the speaker assembly.


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Illustrated Parts Catalog | Removal & Replacement P rocedures|Specifications


Removing the Battery Pack

Dis a s s e m b ly

S e q u e n c e

Electrostatic

Discharge

Service

Considerations

Cables and

Connectors

Preparing the

Computer for

Disassembly

Battery Pack

Palmrest Cover

w ith Touch Pad

Keyboard

Heatspreader

To removethe batterypack,complete thefollowingsteps:

1. Slide thebattery packcompartmentdoor downand removeit from thebattery pack.

Next Step


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2. Pull down on the battery

pack tab and

pull the battery pack from

the chassis.

To replace the battery pack,reverse the previousprocedures.

Return to Removal &

Replacement Procedures


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Removing the Palmrest Cover with Touch Pad

D is a s s e m b lyS e q u e n c e

Electrostatic

Discharge

Service

Considerations

Cables and

Connectors

Preparing the

Computer for

Disassembly

Battery Pack

Palmrest

Cover w ithTouch Pad

Keyboard

Heatspreader

Processor

The palmrest coverwith touch pad mustbe removed to gainaccess to any of theinterior componentsof the computer,and it is the firstcomponent that hasto be removed togain access to theinteriorcomponents.

NOTE:

It is notnecessaryto remove

the displaypanelassembly toaccess theinteriorcomponentsof the


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4. Turn the computer over(right side up), pull forward onthe display latches to release

and open the displayassembly.

5. Lift up front end of thepalmrest cover with touch padand remove it from the groovein the chassis.

6. Tilt the palmrest cover withtouch pad, allowing it to reston top of the keyboard, anddisconnect the flex cable fromthe LIF connector on thepalmrest cover.

CAUTION:Whenreplacing the palmrestcover with touch pad,ensure that the cable isfully inserted into the


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Removing the Keyboard

Dis a s s e m b ly

S e q u e n c e

Electrostatic

Discharge

Service

Considerations

Cables and

Connectors

Preparing the

Computer for

Disassembly

Battery Pack

Palmrest Cover

w ith Touch Pad

Keyboard

Heatspreader

To removethe keyboard,complete thefollowingsteps:

1. Prepare

the computerfor

disassembly.

2. Removethe palmrest

cover with

touch pad.

3. Gently liftand turn thekeyboard


Models : 1270 1670 and 1675
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Models : 1270, 1670, and 1675




Removing the Heatspreader

Dis a s s e m b ly

S e q u e n c e

Electrostatic

Discharge

Service

ConsiderationsCables and

Connectors

Preparing the

Computer for

Disassembly

Battery PackPalmrest Cover

w ith Touch Pad

Keyboard

Heatspreader

To removetheheatspreader,complete thefollowingsteps:

1. Prepare

the computer

for

disassembly.

2. Remove

the palmrestcover with

touch pad.

3. Gently liftand turn the


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, ,




Removing the Processor

Dis a s s e m b ly

S e q u e n c e

Electrostatic

Discharge

Service


Connectors

Preparing the

Computer for

Disassembly

Battery Pack

Palmrest Cover

w ith Touch Pad

Keyboard

Heatspreader

To removetheprocessor,complete thefollowingsteps:

1. Preparethe computer

for

disassembly.


cover with

touch pad.

3. Removethe keyboard.


d l d

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Models : 1270, 1670, and 1675



To replace the processor complete the following steps:

IMPORTANT:The notch on the upper left corner of the processor serves as an orientationindicator. Align the notch on the left corner of the processor with the notch onthe left corner of the processor chassis slot.

1. Insert the processor into the slot on the system board.

NOTE: When installing the processor into the chassis slot, be sure that the hole pattern on thechassis slot lines up with the pins on the processor. The processor should drop into thesocket without any force.

2. Insert a small blade screw driver into the top slot opening on the processorand push away from the display to lock the processor.

Return to Removal & Replacement Procedures


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Removing the 4.3-GB or 6.4-GB Hard Drive

Dis a s s e m b ly

S e q u e n c e

Electrostatic

Discharge

Service

Considerations

Cables and

Connectors

Preparing the

Computer for

Disassembly

Battery Pack

Palmrest Cover

w ith Touch Pad

Keyboard

H t d

To removethe harddrive,completethe followingsteps:

1. Preparethecomputer

for

disassembly.


cover with

touch pad.

3 R


Models : 1270 1670 and 1675
http://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.html

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5. Disconnect the hard drivedata cable from the hard driveand remove from the chassis.

Next Step


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To remove the hard drivemounting bracket, completethe following steps.

Remove four screws from thehard drive mounting bracket.

To replace the hard drive andhard drive mounting bracket,reverse the previous

procedures.

Return to Removal &


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6. Remove two screws fromthe base enclosure whichsecures the DVD or CD drive to

the chassis.

Next Step


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7. Disconnect the DVD or CDdrive cable from the DVD orCD drive and remove the DVDor CD drive from the chassis.

To replace the DVD or CDdrive, reverse the previousprocedures.

Return to Removal &



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Removing the Battery Charger Board

D is a s s e m b ly

S e q u e n c e

Electrostatic

Discharge

Service

Considerations

Cables and

Connectors

Preparing the

Computer forDisassembly

Battery Pack

Palmrest Cover

w ith Touch Pad

To remove thebattery chargerboard, completethe followingsteps:

1. Prepare thecomputer for

disassembly.

2. Remove thepalmrest cover

with touch pad.

3. Remove thekeyboard.

4. Remove theheatspreader.


Models : 1270, 1670, and 1675
http://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.html

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Removing the Modem

Dis a s s e m b ly

S e q u e n c e

Electrostatic

Discharge

Service


Connectors

Preparing the

Computer for

Disassembly


w ith Touch Pad

Keyboard

Heatspreader

To removethe modem,complete thefollowingsteps:

1. Prepare

the computer

for

disassembly.


cover with

touch pad.



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6. Disconnect the modemcable from the modem.

To replace the modem, reversethe previous procedures.

Return to Removal &



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Removing the Display Panel Assembly

Dis a s s e m b ly

S e q u e n c e

Electrostatic

Discharge

Service


Connectors

Preparing the

Computer for

Disassembly

Battery Pack

Palmrest Cover

w ith Touch Pad

Keyboard

Heatspreader

To removethe displaypanelassembly,complete thefollowingsteps:

1. Prepare

the computer

for

disassembly.


cover with

touch pad.

3 Remove


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7. Disconnect the flex datacable attached to the displaypanel assembly from the LowVoltage Differential Signal

(LVDS) connector the on thesystem board.

Next Step


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8. Close the display panel

assembly and push back on

top of the hinge covers and

lift up from the bottom edge ofthe hinge covers to remove thecovers off the chassis.

IMPORTANT:

Carefullyremove thedisplay panel

assemblyhinge covers.

Next Step


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9. Support the back of thedisplay panel assembly andremove two screws from each

of the display panel hinges.

Next Step


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10. Remove the connectoron the end of the display flex

data cable.

IMPORTANT:

Compaqrecommendsreplacing theLVDS interfaceconnector onthe display flex

data cableafterremoving.

CAUTION: Theconnector on the endof the flex cable mustbe removed before thecable can be routedthrough the slot on theU CPU


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Removing the Upper CPU Cover

Dis a s s e m b ly

S e q u e n c e

Electrostatic

Discharge

Service


Connectors

Preparing the

Computer for

Disassembly


w ith Touch Pad

Keyboard

Heatspreader

To removethe UpperCPU covercomplete thefollowingsteps:


for

disassembly.


cover with

touch pad.

3. Removethe keyboard


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8. Remove four screws locatedon the top of the Upper CPUcover.

9. Lift the Upper CPU cover offthe snaps on the chassis whichwill disconnect the powerswitch from the connector onthe system board.

To replace the Upper CPUcover, reverse the previousprocedures.

Return to Removal &



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Removing the Speaker Assembly

Dis a s s e m b ly

S e q u e n c e

Electrostatic

Discharge

Service

Considerations

Cables and

Connectors

Preparing the

Computer for

To removethe speakerassembly,complete thefollowingsteps:


for

disassembly.


cover with

touch pad.

3. Removethe keyboard


Models : 1270, 1670, and 1675
http://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.html

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Removing the Diskette Drive

D is a s s e m b l y

S e q u e n c e

Electrostatic

Discharge

Service

Considerations

Cables and

Connectors

Preparing the

To remove thediskette drive,complete thefollowing steps:

1. Prepare the

computer for

disassembly.

2. Remove thepalmrest cover

with touch pad.

3. Remove the

keyboard.

4. Remove theheatspreader.


Models : 1270, 1670, and 1675
http://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.htmlhttp://www.compaq.com/athome/support/msgs/1270-1675/newp1.html

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Removing the Fan Assembly

Dis a s s e m b ly

S e q u e n c e

Electrostatic

DischargeService

Considerations

Cables and

Connectors

Preparing the

Computer forDisassembly

Battery Pack

Palmrest Cover

w ith Touch Pad

To removethe fanassembly,complete thefollowingsteps:


for

disassembly.


cover withtouch pad.


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15. Remove five standoffsfrom the system board.

Next Step

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Models : 1270, 1670, and 1675



Pi A i t | B tt P k O ti

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18. Pull the PCMCIA eject lever out (straight), lift up the rightside of the system board and pull forward to remove thesystem board from the chassis.

To replace the system board, reverse the previousprocedures.

IMPORTANT: Remove all cables from the system board.

Dip Switch System Board Settings



Models : 1270, 1670, and 1675


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g | p | p


For Models: 1670 and 1675

CAUTION: Only change settings 1-5 on SW1 . Settings 6-10 vary by model and should not be changed when replacing the

system board. Ensure the dip switch voltage settings (SW1 and SW3 ) on the system board are correct for the computermodel and processor voltage marked on the processor chip. If the system board dip switch voltage settings are not correct, damagemay occur to the computer and/or system board.

NOTE: The black area on the dip switch indicates the position of the switch.



Models : 1270, 1670, and 1675


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| g | | | p | g



Removing the Memory Module

Dis a s s e m b ly

S e q u e n c e

Electrostatic

Discharge

Service

Considerations

Cables and

Connectors

Preparing the

Computer for

Disassembly

Battery Pack

Palmrest Cover

w ith Touch Pad

Keyboard

Heatspreader

To removethe memorymodule,completethe followingsteps:

1. Preparethecomputer

for

disassembly.

2. Close the

computerand turn thecomputerupsidedown.


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4. Pull side levers to releasethe memory module andunplug the memory modulefrom the system board.

To replace the memorymodule, reverse the previousprocedures.

Return to Removal &


Documents

HP / Compaq 1270-1675