Compaq Presario,Presario 1234 Maintenance & Service Manual Download

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"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1200 Series

Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252

Home Page

Notice

Preface

Product Description

Troubleshooting

Illustrated Parts Catalog

Removal & Replacement Procedures

Specifications

Pin Assignments

Battery Pack Operations

Removal and Replacement Procedures

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

Serial Number Location

Disassembly

Sequence

Electrostatic
Discharge

Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
Battery Pack
Palmrest
Cover with
Touch Pad
Heatspreader
Keyboard
Processor

Report the computer

serial number to Compaq when requesting

information or ordering spare parts.

file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...01238%201240%201242%201250%201252/removal.html (1 of 2)6/27/2004 2:22:42 AM

Summary of Contents for Presario,Presario 1234

Page 1: ...Thank you for purchasing this Factory Service Manual CD DVD from servicemanuals4u com Please check out our eBay auctions for more great deals on Factory Service Manuals servicemanuals4u ...

Page 2: ...nload a ZIP file containing the complete Maintenance Service Guide for this product Welcome to the Maintenance Service Guide MSG This online guide is designed to serve the needs of those whose job it is to repair Compaq products Many of the components of the hardcopy MSG are contained in this online guide The Notice contains the copyright and trademark information The Preface shows symbol conventi...

Page 3: ...nd Service Guide Models 1230 and 1232 Compaq Home Search Showroom Service Worldwide Compaq com Comments Copyright Revised 22 October 1998 file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201238 201240 201242 201250 201252 index html 2 of 2 6 27 2004 2 22 38 AM ...

Page 4: ...SE OF THIS MATERIAL This guide contains information protected by copyright No part of this guide may be photocopied or reproduced in any form without prior written consent from Compaq Computer Corporation Ó 1998 Compaq Computer Corporation All rights reserved Printed in the U S A Compaq Presario Registered U S Patent and Trademark Office Microsoft MS DOS and Windows are registered trademarks of Mi...

Page 5: ...Models 1234 1235 1236 1237 1238 1240 1242 1250 and 1252 First Edition August 1998 Compaq Computer Corporation 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201238 201240 201242 201250 201252 notice html 2 of 2 6 27 2004 2 22 39 AM ...

Page 6: ...ble Computers Compaq Computer Corporation reserves the right to make changes to the Compaq Presario 1200 Series Portable Computers without notice Symbols 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 of life CAUTION Text set off in this ma...

Page 7: ...cations of component replacement or printed circuit board modifications may void any warranty Serial Number When requesting information or ordering spare parts the computer serial number should be provided to Compaq The serial number is located on the bottom of the computer Locating Additional Information The following documentation is available to support this product Compaq Presario 1200 Series ...

Page 8: ...lacement Procedures Specifications Pin Assignments Battery Pack Operations Product Description Models and Features Controls and Lights Left Side Components Right Side Components Bottom of Unit Rear Connectors Power Management for Windows 98 Compaq Presario Portable Computer is a continuation of the new generation of multimedia portable computers with an innovative integrated design outstanding aud...

Page 9: ...dels 1234 1235 1236 1237 1238 1240 1242 1250 and 1252 based portable computer allows full desktop functionality 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01238 201240 201242 201250 201252 product html 2 of 2 6 27 2004 2 22 40 AM ...

Page 10: ...g Without Diagnostics Solving Minor Problems Contacting Compaq Support This section covers troubleshooting information for the Compaq Presario 1200 Series 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 diagnostic tables if you are unable to run POST or if POST displays ...

Page 11: ...1238 1240 1242 1250 and 1252 NOTE If the problem is intermittent check the computer several times to verify that the problem is solved 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20check 201238 201240 201242 201250 201252 trouble html 2 of 2 6 27 2004 2 22 40 AM ...

Page 12: ...s Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Illustrated Parts Catalog System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Parts Documentation and Software This section provides an breakdown and identifies the spare parts ordering number associated with each ...

Page 13: ...0checked 20ok NOT 1236 201237 201238 201240 201242 201250 201252 illust html 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20check 201238 201240 201242 201250 201252 illust html 2 of 2 6 27 2004 2 22 41 AM ...

Page 14: ... Procedures Specifications Pin Assignments Battery Pack Operations Removal and Replacement Procedures This section explains the removal and replacement procedures for the computer Serial Number Location Disassembly Sequence Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Pro...

Page 15: ...ives CD Drive Battery Charger Board Modem Display Panel Assembly Upper CPU Cover Speaker Assembly Diskette Drive Fan Assembly System Board Dip Switch Settings Memory Module 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01238 201240 201242 201250 201252 removal html 2 of 2 6 27 2004 2 22 42 AM ...

Page 16: ...ted Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Specifications This chapter covers the following specifications of Compaq Presario 1200 Series Portable Computers Computer models Physical and environmental System Interrupts System DMA System I O Address System Memory Catalog Display Memory expansion Diskette drive Hard drive CD drive Battery p...

Page 17: ...age Operating Current Operating Frequency Maximum Transient 100 240 V 0 8 0 4 A RMS 47 63 Hz Meets IEC 801 4 and IEC801 5 1kV for 50 ns Temperature Operating 50 to 95 F 10 to 35 C Nonoperating 4 to 140 F 20 to 60 C Relative Humidity noncondensing Operating 10 to 90 35 C to 90 Nonoperating tw 38 7 C max 5 to 95 60 C to 95 Altitude Operating 0 to 10 000 ft 0 to 3 15 km Nonoperating 0 to 30 000 ft 0 ...

Page 18: ...r for PCI Steering IRQ11 IRQ Holder for PCI Steering IRQ11 NeoMagic MagicGraph 128XD IRQ11 Texas Instruments PCI 1131 CardBus Controller IRQ11 Texas Instruments PCI 1131 CardBus Controller IRQ12 Synaptics PS 2 TouchPad IRQ13 Numeric data processor IRQ14 Primary IDE controller dual fifo IRQ14 Opti Viper Max Dual PCI IDE Controller IRQ15 Secondary IDE controller dual fifo IRQ15 Opti Viper Max Dual P...

Page 19: ...Max Dual PCI IDE Controller x0170 x0177 Secondary IDE controller dual fifo x01F0 x01F7 Opti Viper Max Dual PCI IDE Controller x01F0 x01F7 Primary IDE controller dual fifo x0220 x022F ES1869 Plug and Play AudioDrive x02F8 x02FF Compaq Presario 56K DF x0330 x0331 ES1869 Plug and Play AudioDrive x0370 x0371 Motherboard resources x0376 x0376 Opti Viper Max Dual PCI IDE Controller x0376 x0376 Secondary...

Page 20: ...cGraph 128XD xFECFF000 xFECFFFFF OPTi 82C861 PCI to USB Open Host Controller xFED00000 xFEDFFFFF NeoMagic MagicGraph 128XD xFFFC0000 xFFFFFFFF Motherboard resources Display Information not available 12 1 Diagonal TFT Display U S Metric Dimensions Height Width Information not available Information not available Display Dimensions Width Height Depth Information not available Information not availabl...

Page 21: ...mation not available Diskette Drive Capacity per Diskette High Low Information not available Diskette Size Information not available Number of LED Indicators Read Write Information not available Number of Drives Supported Information not available Drive Rotation rpm Information not available Transfer Rate Kbps Information not available Bytes per Sector Information not available Sectors per Track H...

Page 22: ... Information not available Drive Type Information not available Information not available Logical Configuration Cylinders Heads Sectors per track Bytes per sector Information not available Information not available Seek Times Typical Including settling in ms Single track Average Full stroke Information not available Information not available Transfer Rate At interface Information not available Inf...

Page 23: ...0 3 mm 5 7 in 145 mm 3 1 in 78 7 mm Weight 1 01 Ib 458 1 g 0 90 Ib 408 2 g Battery Pack Operating Time 2 30 hr 3 00 hr Energy Nominal Open Circuit Voltage Capacity Power 9 6 V 3200mAH 40 W 14 4 V 2500mAH 40 W Environmental Requirements Operating Temperature Non operating Temperature Charging Temperature 32 F 0 50 C 20 C 60 C 5 C 45 C 32 F 0 50 C 20 C 60 C 5 C 45 C 1 800 AT COMPAQ privacy and legal...

Page 24: ...n assignment tables for Compaq Presario 1200 Series Portable Computers 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 otherwise indicated by an asterisk Parallel Connector Pin Signal Pin Signal 1 Strobe 10 Acknowledge 2 Data Bit 0 11 Busy 3 Data Bit 1 12 Paper Out 4 Data Bit 2 13 Select 5 ...

Page 25: ...Detect Receive Data Transmit Data Data Terminal Ready Signal Ground Data Set Ready Ready to Send Clear to Send Ring Indicator Keyboard Mouse Connector Pin Signal 1 2 3 4 5 6 Data 1 Data 2 Ground 5 V Clock 1 Clock 2 External VGA Monitor Connector Pin Signal file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01238 201240 201242 201250 201252 connec1 html 2 of 4 6 27 2004 2 22 46 AM ...

Page 26: ...g Green Analog Blue Analog Not connected Ground Ground Analog Ground Analog Ground Analog Not connected Ground Monitor Detect DDC2B Data Horizontal Sync Vertical Sync DDC2B Clock Universal Serial Bus Connector Pin Signal 1 2 3 4 5V Data Data Ground Modem file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01238 201240 201242 201250 201252 connec1 html 3 of 4 6 27 2004 2 22 46 AM ...

Page 27: ...234 1235 1236 1237 1238 1240 1242 1250 and 1252 Connector Pin Signal 1 2 3 4 5 6 Unused Unused Tip Ring Unused Unused 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01238 201240 201242 201250 201252 connec1 html 4 of 4 6 27 2004 2 22 46 AM ...

Page 28: ...y Pack Operating Time Battery pack operating time differs depending on several variables To avoid unnecessary replacement consider the following variables when determining how long a charged battery pack should last Power management settings Hardware configuration Software applications Installed options Display brightness Hard drive usage Changes in operating temperature Type and number of install...

Page 29: ...tion a battery pack complete the following steps 1 Plug in the AC adapter and allow the battery to charge until the LED light on the display stops blinking Your battery gauge may read 100 percent for a period of time before LED light on the display stops blinking Do not unplug the AC adapter until the arrow disappears 2 Unplug the AC adapter and allow the battery to drain until the computer reache...

Page 30: ... ion battery packs be recycled Battery packs should be handled in accordance with country state province or local regulations CAUTION Never attempt to open or service a battery pack Opening a battery pack not only damages the pack and makes it unusable but also expose potentially harmful battery components Top of Page 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ ...

Page 31: ...Series Portable Computer Models Model 1234 Model 1235 Display 12 1 HPA 12 1 HPA or 12 1 TFT Processor AMD K6 266 MMX AMD K6 266 MMX Hard Drive 3 2 GB 4 0 GB or 3 2 GB CD Drive 24 MAX 24 MAX Modem M 56 0 Kbps Data Fax with ITU V 90 K 56 0 Kbps Data Fax with ITU V 90 Battery ES NiMH ES NiMH or Li ion Model 1236 Model 1237 Display 12 1 TFT 12 1 TFT Processor AMD K6 266 MMX AMD K6 266 MMX Hard Drive 4...

Page 32: ...tions Controls and Lights Models and Features Controls and Lights Left Side Components Right Side Components Bottom of Unit Rear Connectors Power Management for Windows 98 Front of Unit 1 Display 7 Easy Access Internet Button 2 Power On Off Button 8 Headphone Jack Left 3 Keyboard 9 Microphone Jack Right 4 Touch Pad 10 Volume Control Up Button 5 Touch Pad Button Left 11 Integrated Speakers 6 Volume...

Page 33: ...odels 1234 1235 1236 1237 1238 1240 1242 1250 and 1252 Compaq Home Search Showroom Service Worldwide Compaq com Comments Copyright Revised 22 October 1998 file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201238 201240 201242 201250 201252 contrs html 2 of 2 6 27 2004 2 23 06 AM ...

Page 34: ...escription Troubleshooting Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Left Side Components Models and Features Controls and Lights Left Side Components Right Side Components Bottom of Unit Rear Connectors Power Management for Windows 98 1 PC Card Eject Lever 3 Diskette Drive Slot 2 PC Card Slot 4 Diskette Eject Button 1 800 AT CO...

Page 35: ...ace Product Description Troubleshooting Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Right Side Components Models and Features Controls and Lights Left Side Components Right Side Components Bottom of Unit Rear Connectors Power Management for Windows 98 1 Battery Compartment 3 CD Drive Eject Button 2 CD Drive 1 800 AT COMPAQ privacy...

Page 36: ... Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Bottom of Unit Models and Features Controls and Lights Left Side Components Right Side Components Bottom of Unit Rear Connectors Power Management for Windows 98 1 Memory Compartment 2 Feet file C SERVICE 20MANUALS COMPAQ 20_ 2...

Page 37: ...ice Guide Models 1234 1235 1236 1237 1238 1240 1242 1250 and 1252 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20checked 20ok NOTEBOOK 35 201236 201237 201238 201240 201242 201250 201252 bottom html 2 of 2 6 27 2004 2 23 08 AM ...

Page 38: ...lustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Rear Connectors Models and Features Controls and Lights Left Side Components Right Side Components Bottom of Unit Rear Connectors Power Management for Windows 98 1 AC Adapter 6 USB 2 Parallel Printer Port 7 Keyboard Mouse Port 3 Serial Port 8 Modem Jack 4 Fan Exhaust 9 Security Slot 5 Exte...

Page 39: ...ated based on the amount of time passed since the last system activity System activity examples 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 Office Desk Portable Laptop and Always On From the default settings you can cha...

Page 40: ...over the active On mode Compaq Presario Notebook computers have two levels of sleep Hibernation and Sleep Hibernation by pushing the power button once your computer will perform a save to disk followed by a shut down of the computer into Off mode Sleep is a low power mode also referred to as Standby mode While in Sleep mode your computer will maintain system information and open files Unsaved info...

Page 41: ...15 minutes If on Battery power system will not go to Sleep if on AC power Hibernate Manual Press Power Button once Press Power Button once No Power LED blank screen Time Out Default If low battery or after 1 hour of sleep system will not Hibernate if on AC power Off Perform normal Windows shutdown via the start button or press and hold down the power button for 4 seconds Press Power Button once No...

Page 42: ...ariables such as the following Power conservation settings Hardware configuration Software applications Installed options Display brightness Hard drive usage Power button Changes in operating temperature Type and number of installed PC Cards For more information on increasing battery pack operating time conditioning the battery pack and disposing of a used battery pack refer to the Battery Pack Op...

Page 43: ...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 if you 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 by running POST w...

Page 44: ...ntenance and Service Guide Models 1234 1235 1236 1237 1238 1240 1242 1250 and 1252 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201238 201240 201242 201250 201252 prelim html 2 of 2 6 27 2004 2 23 10 AM ...

Page 45: ...acement Procedures Specifications Pin Assignments Battery Pack Operations Clearing the Power on Password Clearing the power on password requires removing all Setup attributes that are programmed in the CMOS The RTC battery is located on the system board If the password is not known clear it by performing the following steps 1 Turn off the computer 2 Disconnect the power cord 3 Remove the battery p...

Page 46: ... battery for 30 seconds and replace it 9 Reassemble the computer 10 Turn on the computer to verify that the power on password has been cleared If it has not been cleared repeat Steps 1 through 10 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01238 201240 201242 201250 201252 ponpass html 2 of 2 6 27 2004 2 23 11 AM ...

Page 47: ...s 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 show POST error messages refer to the Troubleshooting tables...

Page 48: ... Cause Recommended Action Mismatch in drive type or failure in the diskette controller 1 Run Computer Checkup TEST 2 Check and or replace cables 3 Replace the system board 605 Diskette Drive Error Probable Cause Recommended Action Mismatch in drive type Run Computer Setup 1780 Primary Hard Drive 0 Failure Probable Cause Recommended Action Disk 0 failed to respond 1 Run Computer Checkup TEST 2 Repl...

Page 49: ...e 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 that information Have the files or the printed information available when you call for support Computer Checkup TEST Computer Checkup TEST determines whe...

Page 50: ...un the tests to stop on errors or to print or save a log of errors Prompted Diagnostics Allows maximum control over testing the devices You can choose attended or unattended testing decide to stop on errors or choose to print or save a log of errors 10 Follow the instructions on the screen as the devices are tested When testing is complete the Test Option menu appears 11 Exit the Test Option menu ...

Page 51: ...tem you want to view from the following list System Memory ROM Audio Keyboard Operating system System ports System files System storage Windows files Graphics 7 Follow the instructions on the screen to cycle through the screens to return to the list and choose another item or to print the information 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201238 2012...

Page 52: ...nostic program These error codes help identify possibly defective subassemblies The following tables list error codes a description of the error condition and the action required to resolve the error condition IMPORTANT Retest the system after completing each step If the problem has been resolved do not proceed with the remaining steps For the removal and replacement of a particular subassembly se...

Page 53: ...05 xx Port 61 error 106 xx Keyboard controller self test failed 107 xx CMOS RAM test failed 108 xx CMOS interrupt test failed 109 xx CMOS clock test failed 110 xx Programmable timer load data test failed 113 xx Protected mode test failed 114 01 Speaker test failed 1 Check system configuration 2 Verify cable connections to speaker 3 Replace the system board and retest Memory Test Error Codes 200 xx...

Page 54: ...tte Drive Test 600 xx Diskette ID drive types test failed 1 Replace the diskette media and retest 2 Check and or replace the diskette power and signal cables and retest 3 Replace the diskette drive and retest 4 Replace the system board and retest 601 xx Diskette format failed 602 xx Diskette read test failed 603 xx Diskette write read compare test failed 604 xx Diskette random read test failed 605...

Page 55: ...failed 1716 xx Hard drive conditional format test failed 1717 xx Hard drive ECC test failed 1719 xx Hard drive power mode test failed 1724 xx Network preparation test failed 1736 xx Drive monitoring test failed ECC Error Correction Code Video Test Error Codes 501 xx Video controller test failed The following apply to error codes 501 xx through 516 xx 1 Disconnect external monitor and test with int...

Page 56: ... failed 2408 xx Video 320 200 mode color set 0 test failed 2409 xx Video 320 200 mode color set 1 test failed 2410 xx Video 640 200 mode test failed 2411 xx Video screen memory page test failed 2412 xx Video gray scale test failed 2414 xx Video white screen test failed 2416 xx Video noise pattern test failed 2418 xx ECG VGC memory test failed 2419 xx ECG VGC ROM checksum test failed 1 Run the Conf...

Page 57: ...8 xx Advanced VGA DAC test 2477 xx Advanced VGA data path test 2478 xx Advanced VGA BitBLT test 2480 xx Advanced VGA LineDraw test Audio Test Error Codes 3206 xx Audio System Internal Error Replace the system board and retest TouchPad Pointing Device Interface Test Error Codes 8601 xx Mouse test failed 1 Replace the TouchPad and retest 2 Replace the system board and retest 8602 xx Interface test f...

Page 58: ...CD drive and retest 5 Replace the system board and retest 6600 xx ID test failed 6605 xx Read test failed 6608 xx Controller test failed 6623 xx Random read test failed Back to top 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201238 201240 201242 201250 201252 error html 7 of 7 6 27 2004 2 23 14 AM ...

Page 59: ...Power Diskette Diskette drive Printer Display Touch Pad Hard drive Keyboard Numeric keypad Hardware Installation Since symptoms can appear to be similar carefully match the symptoms of the computer malfunction against the problem description in the Troubleshooting tables to avoid a misdiagnosis WARNING To avoid a potential shock hazard during troubleshooting procedures disconnect all power sources...

Page 60: ... Solving Audio Problems Problem Probable Cause Solution s Computer does not beep after the Power On Self Test POST This is typical it indicates successful completion of the Power On Self Test POST No action is required Solving Battery Pack and Battery Gauge Problems Some common causes and solutions for battery pack problems are listed in the following table The Solving Power Problems section in th...

Page 61: ...he RTC battery Problem Probable Cause Solution s Battery charge does not last as long as expected Battery is being exposed to high temperatures or extremely cold temperatures Keep the battery pack within the recommended operating temperature range 50 F to 104 F 10 C to 40 C or recommended storage range 4 F to 86 F 20 C to 30 C Recharge the battery pack Battery has partially self discharged Recharg...

Page 62: ...e listed in the following table Solving CD Drive Problems Problem Probable Cause Solution s CD drive cannot read a compact disc Compact disc is upside down or is improperly inserted in the CD drive Open the CD loading tray lay the compact disc in it label side up then close the tray CD is CD Plus or Pregap Track 0 type Cannot read these type CDs in 24x Remove the CD Solving Diskette and Diskette D...

Page 63: ...lving Display Problems This section lists some common causes and solutions for computer display and external monitor problems You can perform a monitor self test on an external VGA color or monochrome monitor by disconnecting the monitor from the computer To do so complete the following steps 1 Turn off the monitor 2 Turn off the computer 3 Disconnect the monitor signal cable from the computer 4 T...

Page 64: ...red up Improper backlight or display cable connections Replace the display assembly Defective inverter board Replace the display assembly Defective display cable Replace the display assembly Defective display panel Replace the display assembly Defective system board Replace the system board The light tubes on the edge of the display panel do not light up at all and Power On Self Test POST does not...

Page 65: ...owing until the problem is solved 1 System board 2 Display assembly Defective display cable Replace the display assembly Defective inverter board Replace the display assembly Defective system board Replace the system board Ghost bars extending from graphics on the display Common characteristic of STN displays 1 Change the background colors 2 Adjust the Contrast of the display by using Fn F5 or Fn ...

Page 66: ...oblem Probable Cause Solutions s A new device is not recognized as part of the computer system Cable s of new external device are loose or power cables are unplugged Ensure that all cables are properly and securely connected Power switch of new external device is not turned on Turn off the computer turn on the external device then turn on the computer to integrate the device with the computer syst...

Page 67: ...r or is defective Ensure that the optional memory expansion card is installed correctly Out of Memory message is displayed on the screen or insufficient memory error occurs during operation System ran out of memory for the application Check the application documentation for memory requirements Install additional memory Too many TSR terminate and stay resident applications are running Remove from m...

Page 68: ...upport Product name Product serial number Purchase date Conditions under which the problem occurred Any error messages that have occurred Hardware configuration Type of printer connected Hardware software being used Printed result of Computer Checkup TEST Printed copies of CONFIG SYS and AUTOEXEC BAT files if possible Shipping Preparation To ship the computer complete the following steps 1 Back up...

Page 69: ...ive and that there are no PC Cards in the PC slots 4 Close the display and all exterior doors of the computer 5 Pack the computer with sufficient packing material to protect it Use the original packing box or similar packaging 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01238 201240 201242 201250 201252 compaq1 html 2 of 2 6 27 2004 2 23 17 AM ...

Page 70: ...Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations System Unit System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Parts Documentation and Software Select the desired part for the description and spare part number Keyboard file C SERVICE 20MANUALS C...

Page 71: ...ntenance and Service Guide Models 1230 and 1232 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20checked 20ok NOTEBOOKS 235 201236 201237 201238 201240 201242 201250 201252 system html 2 of 2 6 27 2004 2 23 18 AM ...

Page 72: ...scription Troubleshooting Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Boards System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Parts Documentation and Software Select the desired part for the description and spare part number file C SERVICE...

Page 73: ...ntenance and Service Guide Models 1234 1235 1236 1237 1238 1240 1242 1250 and 1252 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201238 201240 201242 201250 201252 boards html 2 of 2 6 27 2004 2 23 19 AM ...

Page 74: ... Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Parts Documentation and Software Select the desired part for the description and spare part nu...

Page 75: ...tenance and Service Guide Models 1234 1235 1236 1237 1238 1240 1242 1250 and 1252 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20check 201238 201240 201242 201250 201252 display html 2 of 2 6 27 2004 2 23 19 AM ...

Page 76: ...eshooting Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Mass Storage Devices System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Parts Documentation and Software Select the desired part for the description and spare part number 1 800 AT COMPAQ ...

Page 77: ...n Troubleshooting Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Miscellaneous Cables Kit System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Parts Documentation and Software Select the desired part for the description and spare part number Spar...

Page 78: ...ries Maintenance and Service Guide Models 1234 1235 1236 1237 1238 1240 1242 1250 and 1252 privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201238 201240 201242 201250 201252 cables html 2 of 2 6 27 2004 2 23 21 AM ...

Page 79: ...neous Cable Kit Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Parts Documentation and Software Description Spare Part Number Power Cord Description Spare Part Number Modem file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201238 201240 201242 201250 201252 newp41 html 1 of 2 6 27 2004 2 23 21 AM United States French Canada 293831 001 International 293831 002 United Kingdom 261866 031 Japan...

Page 80: ...paq Presario 1200 Series Maintenance and Service Guide 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201238 201240 201242 201250 201252 newp41 html 2 of 2 6 27 2004 2 23 21 AM ...

Page 81: ...ns Pin Assignments Battery Pack Operations Miscellaneous Hardware and Plastics Kits System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Parts Documentation and Software Select the desired part for the description Miscellaneous Plastics Kit Spare Part Number 330949 001 Parts Not Shown Miscellaneous Hardware Ki...

Page 82: ...rio 1200 Series Maintenance and Service Guide Models 1230 and 1232 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20che 201238 201240 201242 201250 201252 newp6 html 2 of 2 6 27 2004 2 23 22 AM ...

Page 83: ...ecifications Pin Assignments Battery Pack Operations Miscellaneous Parts System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Parts Documentation and Software Select the desired part for the description and spare part number AC Adapter 298239 001 Miscellaneous Screw Kit Not Shown 330959 001 Logo Kit Not Shown ...

Page 84: ...com Compaq Presario 1200 Series Maintenance and Service Guide privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20check 01238 201240 201242 201250 201252 miscella html 2 of 2 6 27 2004 2 23 23 AM ...

Page 85: ...indows 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...

Page 86: ...ce exposed to electrostatic discharge ESD may not be affected at all and will work perfectly throughout a normal cycle Although it may function normally for a while then degrade in the internal layers reducing its life expectancy Networks built into many integrated circuits provide some protection but in many cases the discharge contains enough power to alter device parameters or melt silicon junc...

Page 87: ... from Styrofoam 14 500 V 5 000 V 3 500 V Removing bubble pack from PCBs 26 000 V 20 000 V 7 000 V Packing PCBs in foam lined box 21 000 V 11 000 V 5 000 V NOTE 700 volts can degrade a product Return to Removal Replacement Procedures 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20check 201238 201240 201242 201250 201252 electro html 2 of 2 6 27 2004 2 23 24 AM ...

Page 88: ...ftware Requirements To service the computer you need the following Compaq screwdriver kit Spare Part No 161946 001 Torx T 9 screwdriver 3 16 inch and 5mm nut drivers for screwlocks and standoffs Small standard screwdriver Small Phillips screwdriver Diagnostics software Screws The screws used in the computer are not interchangeable If an incorrect screw is used during the reassembly process it can ...

Page 89: ...tenance and Service Guide Models 1234 1235 1236 1237 1238 1240 1242 1250 and 1252 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20check 201238 201240 201242 201250 201252 service html 2 of 2 6 27 2004 2 23 25 AM ...

Page 90: ...at they cannot be caught or snagged by parts being removed or replaced Cables Use the following precautions when handling cables to avoid damage to the cable or computer Always handle cables by their connectors Avoid bending twisting or pulling on the cables Apply minimum required force when seating or unseating the cables from their connectors Place the cables in such a manner that they cannot be...

Page 91: ...n handling the plastic parts use care Apply pressure only at the points designated in the maintenance instructions Back to Top of Page Return to Removal Replacement Procedures Compaq Home Search Showroom Service Worldwide Compaq com Comments Copyright Revised 22 October 1998 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01238 201240 201242 201250 201252 cab...

Page 92: ... Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive Battery Charger Board Modem Before beginning removal and replacement procedures complete the following procedures 1 Disconnect AC power and any external devices 2 Remove the battery pack 3 Remove any PC Cards IMPORTANT The battery pack should be removed before performing any internal maintenance on the computer WARNING Metal objects c...

Page 93: ... and exposes potentially harmful battery components There are no field serviceable parts located inside the battery pack NOTE The Compaq Presario 1200 Series Portable Computers have several screws of various sizes which are not interchangeable Care must be taken during reassembly to ensure that the correct screws are used in their correct location During removal please keep respective screws with ...

Page 94: ...ent Procedures Specifications Pin Assignments Battery Pack Operations Removing the Battery Pack Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive Battery Charger Board Modem Display Panel Assembly To remove the battery pack complete the following...

Page 95: ...1238 1240 1242 1250 and 1252 Upper CPU Cover Speaker Assembly Diskette Drive Fan Assembly System Board Dip Switch Settings Memory Module 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201238 201240 201242 201250 201252 newp12 html 2 of 2 6 27 2004 2 23 27 AM ...

Page 96: ... Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive Battery Charger Board Modem Display Panel Assembly Upper CPU Cover The palmrest cover with touch pad must be removed to gain access to any of the interior components of the computer and it is the first component that has to be removed to gain...

Page 97: ...tte Drive Fan Assembly System Board Dip Switch Settings Memory Module 2 Close the computer and turn the computer upside down 3 Remove four screws from the bottom of the computer Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 237 201238 201240 201242 201250 201252 51 html 2 of 2 6 27 2004 2 23 28 AM ...

Page 98: ... Pin Assignments Battery Pack Operations Removing the Heatspreader Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive Battery Charger Board Modem To remove the heatspreader complete the following steps 1 Prepare the computer for disassembly 2 Remo...

Page 99: ...l Assembly Upper CPU Cover Speaker Assembly Diskette Drive Fan Assembly System Board Dip Switch Settings Memory Module To replace the heatspeader reverse the previous procedures 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 237 201238 201240 201242 201250 201252 52 html 2 of 2 6 27 2004 2 23 29 AM ...

Page 100: ...nments Battery Pack Operations Removing the Keyboard Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive Battery Charger Board Modem To remove the keyboard complete the following steps 1 Prepare the computer for disassembly 2 Remove the palmrest co...

Page 101: ...Display Panel Assembly Upper CPU Cover Speaker Assembly Diskette Drive Fan Assembly System Board Dip Switch Settings Memory Module 4 Remove the heatspreader Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 237 201238 201240 201242 201250 201252 53 html 2 of 2 6 27 2004 2 23 30 AM ...

Page 102: ...cedures Specifications Pin Assignments Battery Pack Operations Removing the Processor Electrostatic Discharge Service Consideration Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive To remove the processor complete the following steps 1 Prepare the computer for disassembly 2 Remove the palmre...

Page 103: ...tte Drive Fan Assembly System Board Dip Switch Settings Memory Module into the bottom slot opening on the processor and push toward the display to release the processor from the chassis slot 6 Lift the processor out of the processor chassis slot Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 237 201238 201240 201242 201250 201252 54 html 2 of 2 6 2...

Page 104: ...rocedures Specifications Pin Assignments Battery Pack Operations Removing the 3 2 GB 4 1 GB and 6 4 GB Hard Drives Electrostatic Discharge Service Consideration Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive To remove the hard drive complete the following steps 1 Prepare the computer for d...

Page 105: ...isplay Panel Assembly Upper CPU Cover Speaker Assembly Diskette Drive Fan Assembly System Board Dip Switch Settings Memory Module hard drive mounting bracket and lift up the hard drive Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 237 201238 201240 201242 201250 201252 55 html 2 of 2 6 27 2004 2 23 32 AM ...

Page 106: ...Specifications Pin Assignments Battery Pack Operations Removing the CD Drive Electrostatic Discharge Service Consideration Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive Battery Charger Board To remove the CD drive complete the following steps 1 Prepare the computer for disassembly 2 Remov...

Page 107: ... Modem Display Panel Assembly Upper CPU Cover Speaker Assembly Diskette Drive Fan Assembly System Board Dip Switch Settings Memory Module the back CD drive Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 237 201238 201240 201242 201250 201252 56 html 2 of 2 6 27 2004 2 23 33 AM ...

Page 108: ...ns Removing the Battery Charger Board Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive To remove the battery charger board complete the following steps 1 Prepare the computer for disassembly 2 Remove the palmrest cover with touch pad 3 Remove th...

Page 109: ...n Assembly System Board Dip Switch Settings Memory Module and lift out of the chassis To replace the battery charger board reverse the previous procedures NOTE When replacing the battery charger board ensure the pins are aligned with the connector on the system board 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 237 201238 201240 201242 201250 201252 57 htm...

Page 110: ...in Assignments Battery Pack Operations Removing the Modem Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive Battery Charger Board Modem Display Panel Assembly To remove the modem complete the following steps 1 Prepare the computer for disassembly...

Page 111: ...per CPU Cover Speaker Assembly Diskette Drive Fan Assembly System Board Dip Switch Settings Memory Module pull the modem off the connector on the system board Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 237 201238 201240 201242 201250 201252 58 html 2 of 2 6 27 2004 2 23 35 AM ...

Page 112: ...rvice Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive Battery Charger Board Modem Display Panel Assembly Upper CPU Cover Speaker Assembly Diskette Drive To remove the display panel assembly complete the following steps 1 Prepare the computer for disassembly 2 Remove the palmr...

Page 113: ...els 1234 1235 1236 1237 1238 1240 1242 1250 and 1252 Fan Assembly System Board Dip Switch Settings Memory Module 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 237 201238 201240 201242 201250 201252 59 html 2 of 2 6 27 2004 2 23 36 AM ...

Page 114: ...ted Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Removing the Upper CPU Cover Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack To remove the Upper CPU cover complete the following steps 1 Prepare the computer for disassembly 2 Remove the palmrest cover with touch pad 3 Rem...

Page 115: ...ory Module 6 Remove the display panel assembly 7 Remove the screw located under the bottom of the unit rear which secures the Upper CPU cover to the chassis and remove three screws located on the top 8 Lift the Upper CPU cover off the snaps on the chassis which will disconnect the power switch from the connector on the system board To replace the Upper CPU cover reverse the previous procedures 1 8...

Page 116: ...moval Replacement Procedures Specifications Pin Assignments Battery Pack Operations Removing the Speaker Assembly Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader To remove the speaker assembly complete the following steps 1 Prepare the computer for disassembly 2 Remove the palmrest c...

Page 117: ...ly System Board Dip Switch Settings Memory Module drive 6 Remove the display panel assembly 7 Remove the Upper CPU cover 8 Remove the charger board 9 Disconnect the speaker cables from the system board and remove the speaker assembly from the chassis To replace the speaker assembly reverse the previous procedures 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20che...

Page 118: ...nments Battery Pack Operations Removing the Diskette Drive Electrostatic Discharge Service Consideration Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive To remove the diskette drive complete the following steps 1 Prepare the computer for disassembly 2 Remove the palmrest cover with touch pa...

Page 119: ...e Fan Assembly System Board Dip Switch Settings Memory Module 7 Remove the screw from the diskette drive and lift up the diskette drive Next Step NOTE Ensure the diskette drive eject lever is properly inserted in the chassis slot when replacing the diskette drive 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 37 201238 201240 201242 201250 201252 512 html 2 ...

Page 120: ...ocedures Specifications Pin Assignments Battery Pack Operations Removing the Fan Assembly Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive To remove the fan assembly complete the following steps 1 Prepare the computer for disassembly 2 Remove th...

Page 121: ...tte Drive Fan Assembly System Board Dip Switch Settings Memory Module assembly 6 Remove the hard drive 7 Remove the Upper CPU cover 8 Lift the fan assembly from the chassis slot and disconnect the fan cable from the connector on the system board Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 37 201238 201240 201242 201250 201252 513 html 2 of 2 6 2...

Page 122: ...derations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive Battery Charger Board Modem Display Panel Assembly Upper CPU Cover Speaker Assembly To remove the system board complete the following steps 1 Prepare the computer for disassembly 2 Remove the palmrest cover with touch pad 3 Remove th...

Page 123: ...iskette Drive Fan Assembly System Board Dip Switch Settings Memory Module 12 Remove the CD drive 13 Remove the fan 14 Disconnect the speaker assembly cables Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 37 201238 201240 201242 201250 201252 514 html 2 of 2 6 27 2004 2 23 40 AM ...

Page 124: ...UTION When replacing the system board ensure the dip switch voltage settings on the system board are correct for the computer model and processor voltage marked on the processor chip If the system board dip switch voltage settings are not correct damage may occur to the computer and or system board NOTE The black area on the dip switch indicates the position of the switch Return to Removal Replace...

Page 125: ...res Specifications Pin Assignments Battery Pack Operations Removing the Memory Module Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive Battery Charger Board Modem To remove the memory module complete the following steps 1 Prepare the computer fo...

Page 126: ... Assembly Upper CPU Cover Speaker Assembly Diskette Drive Fan Assembly System Board Dip Switch Settings Memory Module door and slide the memory module door to the right Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 37 201238 201240 201242 201250 201252 515 html 2 of 2 6 27 2004 2 23 42 AM ...

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Compaq Presario,Presario 1234, Maintenance & Service Manual

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