Compaq Presario 1905 Maintenance & Service Manual Download Page 2

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Compaq.com - Compaq Discovery 1900 Series Maintenance and Service Guide - Models: 1905, 1910, 1915, and 1920

United States June 27, 2004

COMPAQ

Maintenance & Service Guide

Presario 1900 Series

Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

Home Page

Notice

Preface

Product Description

Troubleshooting

Illustrated Parts Catalog

Removal & Replacement Procedures

Specifications

Pin Assignments

Battery Pack Operations

Right Side
Components

Bottom of
Unit

Left Side
and Top
Wedge
Components

Right Side
Wedge
Components

Rear
Connectors

Port
Replicator
Connectors

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

conventions, Technician Notes and Serial Number locations on the unit.

file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...%201915%201919%201920%201922%201925/index.html (1 of 2)6/27/2004 5:04:32 AM

Summary of Contents for Presario 1905

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: ...ls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Port Replicator Connectors 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...

Page 3: ...ll be periodically maintained and updated online as needed For content comments or questions contact the Editor To report a technical problem contact your Regional Support Center or IM Help Center 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 index html 2 of 2 6 27 2004 5 04 32 AM ...

Page 4: ... 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 Microsoft Co...

Page 5: ...ce Guide Models 1905 1906 1910 1915 1919 and 1920 First Edition Oct 1998 Compaq Computer Corporation 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 notice html 2 of 2 6 27 2004 5 04 38 AM ...

Page 6: ... Compaq Computer Corporation reserves the right to make changes to the Compaq Presario 1900 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 manner indicate...

Page 7: ...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 1900 Series Portable Co...

Page 8: ...tions Pin Assignments Battery Pack Operations Product Description Models and Features Controls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Compaq Presario 1900 Series Portable Computers are a new generation of multimedia portable computers with an ultimate thin and light weight desi...

Page 9: ...integrated into one removable component Compaq Presario 1900 Series Portable Computers also have an optional integrated 10 100BaseT Ethernet Port Replicator allowing the user to quickly and easily attach or detach the computer from peripheral devices It contains a full array of ports some which are accessible while the system is docked to the Port Replicator This full file C SERVICE 20MANUALS COMP...

Page 10: ...6 1910 1915 1919 and 1920 function Intel Celeron and Pentium II based portable computer provides full desktop functionality 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01915 201919 201920 201922 201925 product html 3 of 3 6 27 2004 5 04 39 AM ...

Page 11: ...iagnostics Solving Minor Problems Contacting Compaq Support This section covers troubleshooting information for the Compaq Presario 1900 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 an error me...

Page 12: ...0 1915 1919 and 1920 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 201915 201919 201920 201922 201925 trouble html 2 of 2 6 27 2004 5 04 40 AM ...

Page 13: ...Pin Assignments Battery Pack Operations System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Wedge Kit Miscellaneous Parts Documentation and Software This section provides an illustrated parts breakdown and a reference for spare parts for the Presario 1900 Series Portable Computer The computer 1 serial number should be...

Page 14: ...tenance and Service Guide Models 1905 1906 1910 1915 1919 and 1920 bottom of unit 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20check 01915 201919 201920 201922 201925 illustra html 2 of 2 6 27 2004 5 04 41 AM ...

Page 15: ...Assignments Battery Pack Operations Removal and Replacement Procedures This section explains the removal and replacement procedures for the computer Serial Number Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Report the computer serial num...

Page 16: ... Converter Board Low Voltage Differential Signal Board Fan Assembly System Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01915 201919 201920 201922 201925 removal html 2 of 2 6 27 2004 5 04 42 AM ...

Page 17: ...ion Troubleshooting Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Specifications This chapter covers the following specifications of Compaq Presario 1900 Series Portable Computers Physical and Environmental System Interrupts System DMA System I O Addresses System Memory Catalog Display Diskette Drive or LS 120 Drive Hard Drive CD RO...

Page 18: ...es Maintenance and Service Guide Models 1905 1906 1910 1915 1919 and 1920 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20check 01915 201919 201920 201922 201925 specific html 2 of 2 6 27 2004 5 04 44 AM ...

Page 19: ...ovides connector pin assignment tables for Compaq Presario 1900 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...

Page 20: ...ransmit Data Data Terminal Ready Signal Ground Data Set Ready Ready to Send Clear to Send Ring Indicator Keyboard Mouse Connector Connector Pin Signal 1 2 3 4 5 6 Data Not defined Ground 5 VDC Clock Not defined External VGA Monitor Connector Connector Pin Signal file C SERVICE 20MANUALS COMPAQ 20_ 20chec 10 201915 201919 201920 201922 201925 pin html 2 of 4 6 27 2004 5 04 45 AM ...

Page 21: ...lue 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 Connector Pin Signal 1 Ground 2 D 3 D 4 Power Modem Connector file C SERVICE 20MANUALS COMPAQ 20_ 20chec 10 201915 201919 201920 201922 201925 pin html 3 of 4 6 27 2004 5 04 45 AM ...

Page 22: ...ed Unused This information was not available at time of publication Port Replicator Connector Pin Signal Pin Signal Pin Signal Pin Signal This information was not available at time of publication LAN Connector 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 10 201915 201919 201920 201922 201925 pin html 4 of 4 6 27 2004 5 04 45 AM ...

Page 23: ...k operating time Increasing battery pack operating time Conditioning a battery pack Disposing of a used battery pack Increasing Battery 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 S...

Page 24: ... pack at least every 30 days to improve overall battery performance Keep a battery pack in the computer when using it with AC power to supply the battery pack with a constant trickle charge Store the battery pack in a cool dry place when not in use Conditioning a Battery Pack CAUTION To avoid a loss of data ensure that all data is saved before discharging a battery pack To condition a battery pack...

Page 25: ... interest of safeguarding our environment Compaq Computer Corporation recommends that nickel metal hydride NiMH and lithium ion Li 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 p...

Page 26: ...ponents Right Side Wedge Components Rear Connectors Compaq Discovery 1900 Series Portable Computer Models Model 1905 Model 1906 Display 12 1 TFT 12 1 TFT Processor Intel Celeron 266 MHz w 128K Cache Intel Celeron 266 MHz w 128K Cache Hard Drive 4 0 GB 4 0 GB Modem 56 0 Kbps PCI Data Fax 56 0 Kbps PCI Data Fax CD Drive 24X CD ROM 24X CD ROM Model 1910 Model 1915 Display 12 1 TFT or 13 3 TFT 12 1 TF...

Page 27: ...919 Model 1920 Display 13 3 TFT 13 3 TFT Processor Intel Celeron 300 MHz w 128K Cache Pentium II 300 MHz w 256K Cache Hard Drive 6 4 GB 4 0 GB or 6 4 GB Modem K 56 0 Kbps PCI Data Fax 56 0 Kbps PCI Data Fax or 56 0 Kbps PCI Data Fax International DVD Drive DVD Drive DVD Drive Next Page 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 20192...

Page 28: ... Controls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Port Replicator Connectors Port Replicator Components Front of Unit 1 Display 9 TouchPad 2 Backlight Switch Button 10 Left TouchPad Button 3 Instant Internet Access Button 11 Power On Off Light 4 Instant Search Button 12 Scroll U...

Page 29: ...ce Guide Models 1905 1906 1910 1915 1919 and 1920 Power Management 8 Keyboard 16 Integrated Speakers 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 npage2 html 2 of 2 6 27 2004 5 04 47 AM ...

Page 30: ...leshooting Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Status Panel Lights Models and Features Controls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Status Panel Lights 1 AC Adapter Light 2 Num Lock Light 3 Caps Lock...

Page 31: ...odels 1905 1906 1910 1915 1919 and 1920 Port Replicator Connectors Port Replicator Components Power Management 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 npage3 html 2 of 2 6 27 2004 5 04 48 AM ...

Page 32: ...rated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Left Side Components Models and Features Controls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Port Replicator Connectors Left Side Components 1 Security Lock 2 Air Vent 3 PC Car...

Page 33: ...rvice Guide Models 1905 1906 1910 1915 1919 and 1920 Port Replicator Components Power Management 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 npage4 html 2 of 2 6 27 2004 5 04 49 AM ...

Page 34: ...rts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Right Side Components Models and Features Controls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Port Replicator Connectors Right Side Components 1 Battery Compartment 2 Volume Up Down Bu...

Page 35: ...rvice Guide Models 1905 1906 1910 1915 1919 and 1920 Port Replicator Components Power Management 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 npage5 html 2 of 2 6 27 2004 5 04 49 AM ...

Page 36: ... Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Bottom of Unit Models and Features Controls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Port Replicator Connectors Bottom of Unit 1 Wedge Interface Connector 2 Keyboard E...

Page 37: ...rvice Guide Models 1905 1906 1910 1915 1919 and 1920 Port Replicator Components Power Management 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 npage6 html 2 of 2 6 27 2004 5 04 50 AM ...

Page 38: ...Specifications Pin Assignments Battery Pack Operations Left Side and Top Components of the Removable Drive Wedge Models and Features Controls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Port Replicator Connectors Left Side and Top Components of the Removable Drive Wedge 1 DVD Drive ...

Page 39: ...rvice Guide Models 1905 1906 1910 1915 1919 and 1920 Port Replicator Components Power Management 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 npage8 html 2 of 2 6 27 2004 5 04 51 AM ...

Page 40: ...edures Specifications Pin Assignments Battery Pack Operations Right Side Components of the Removable Drive Wedge Models and Features Controls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Port Replicator Connectors Right Side Components of the Removable Drive Wedge 1 Wedge Release But...

Page 41: ...rvice Guide Models 1905 1906 1910 1915 1919 and 1920 Port Replicator Components Power Management 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 npage9 html 2 of 2 6 27 2004 5 04 52 AM ...

Page 42: ...Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations Rear Connectors Models and Features Controls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Port Replicator Connectors Rear Connectors 1 Modem Jack 2 USB Port 3 Keyboard Mouse Port 4 Serial Po...

Page 43: ...rvice Guide Models 1905 1906 1910 1915 1919 and 1920 Port Replicator Components Power Management 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01915 201919 201920 201922 201925 npage11 html 2 of 2 6 27 2004 5 04 52 AM ...

Page 44: ...00BaseT Ethernet Port Replicator Connectors Models and Features Controls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Port Replicator Connectors Port Replicator Components Power Management Integrated 10 100BaseT Ethernet Port Replicator Connectors 1 Keyboard Mouse 2 AC Adapter 3 Seri...

Page 45: ...1900 Series Maintenance and Service Guide Models 1905 1906 1910 1915 1919 and 1920 privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01915 201919 201920 201922 201925 npage12 html 2 of 2 6 27 2004 5 04 53 AM ...

Page 46: ...trols and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Port Replicator Connectors CAUTION The computer power switch should be turned off before you connect or disconnect the port replicator Damage may occur to the computer if it is hot plugged to the port replicator Integrated 10 100Base...

Page 47: ...rface Port Replicator Components Power Management 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01915 201919 201920 201922 201925 npage13 html 2 of 2 6 27 2004 5 04 54 AM ...

Page 48: ...900 Series Portable Computers are equipped with Advanced Power Management APM This management system allows you to conserve battery power and customize the power saving settings to suit your individual needs Power Management Settings Sleep Hibernation Rebooting After a Lockup Servicing Your Computer Full Off Mode Power Management Settings Depending on your patterns of computer use you can set diff...

Page 49: ...off your system prior to system wake up or if you lose power while using the AC adapter Hibernation Mode Hibernation mode occurs by pressing the Power button once Your computer saves the content of your computer memory to the hard drive This is followed by the computer turning off The following table shows the conditions and indicators for getting in and out of the various power modes Sleep Hibern...

Page 50: ...r seconds This will cause a manual shutdown Press the Power button once to start the computer If the computer still does not restart follow these steps 1 Press the Power button and hold it for four seconds to shut the computer down 2 Remove the battery and unplug the AC power for at least 30 seconds 3 Reinsert the battery or reconnect AC power and press the Power button once to restart Full Off Ma...

Page 51: ...nd Service Guide Models 1905 1906 1910 1915 1919 and 1920 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20checked 20ok NOTEBOOK 905 201906 201910 201915 201919 201920 201922 201925 power html 4 of 4 6 27 2004 5 04 55 AM ...

Page 52: ... Handheld Devices Home Networking Monitors and Projectors Networking Notebooks Tablet PCs Options and Accessories Printing and Multifunction Servers Software Storage Supplies Privacy statement Using this site means you accept its terms 2004 Hewlett Packard Development Company L P http h20180 www2 hp com apps Nav h_tool email h_lang en h_cc us6 27 2004 5 05 05 AM ...

Page 53: ... clear the password 2 Run Compaq diagnostics 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 Verif...

Page 54: ... Models 1905 1906 1910 1915 1919 and 1920 When the preliminary steps are completed you are ready to run POST 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 prelim html 2 of 2 6 27 2004 5 05 06 AM ...

Page 55: ...ed Parts Catalog Removal Replacement 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 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 pack 4 Remove the k...

Page 56: ...system board or remove the RTC battery located under the battery charger board for 5 seconds The password together with other Setup attributes will be cleared 7 Reassemble the computer 8 Turn on the computer to verify that the power on password has been cleared If it has not been cleared repeat Steps 1 through 7 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec...

Page 57: ... 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 Power On S...

Page 58: ...ecommended 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 Replace the ...

Page 59: ...e following utilities Computer Checkup TEST View System Information INSPECT Prepare Computer for a Compaq Service Call RemotePaq If you have a difficult problem that seems unsolvable run the Diagnostics utilities before calling for support Run Computer Checkup and select to save the device list to a file to print or to save the log of errors Run the View System Information INSPECT utility and sele...

Page 60: ...evices are installed properly 9 Select one of the following from the Test Option menu Quick Check Diagnostics Runs a quick general test on each device with a minimal number of prompts If errors occur they are displayed when the testing is complete You cannot print or save the error messages Automatic Diagnostics Runs unattended maximum testing of each device with minimal prompts You can choose the...

Page 61: ... in drive A 3 Turn on or restart the computer The computer starts from drive A and the Diagnostics Welcome screen appears 4 Press Enter to continue The Diagnostics menu appears 5 Select View System Information INSPECT from the Diagnostics menu 6 Select the item you want to view from the following list System Memory ROM Audio Keyboard Operating system System ports System files System storage Window...

Page 62: ...elp 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 is resolved do not proceed with the remaining steps For the removal and replacement of a particular subassembly see the section for Removal and Replacemen...

Page 63: ...ontroller 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 Memory machine ID test failed 1 Flas...

Page 64: ...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 xx Diskette ID media failed 606 xx Diskette speed test fa...

Page 65: ...mat 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 internal LCD display 2 Replace the display a...

Page 66: ...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 Configuratio...

Page 67: ...A 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 failed CD DVD Dri...

Page 68: ...ve 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 201915 201919 201920 201922 201925 error html 7 of 7 6 27 2004 5 05 10 AM ...

Page 69: ...skette 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 before ...

Page 70: ...dio 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 this chapter ...

Page 71: ...Replace the RTC battery 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 Recharge the battery Discharge t...

Page 72: ...e Problems Problem Probable Cause Solution s CD DVD drive cannot read a compact disc or digital versatile disc Compact disc or digital versatile disc is upside down or is improperly inserted in the CD DVD drive Open the CD DVD loading tray lay the compact disc or digital versatile 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 Re...

Page 73: ...puter 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 Turn on the monitor and allow it to warm up for one minute The display should be wh...

Page 74: ...Replace the system board Backlight brightness cannot be adjusted with Fn F7 or Fn F8 Improper display cable connections 1 Reseat the display cable to the system board 2 Replace the display assembly Defective inverter board Replace the display assembly Defective display cable Replace the display assembly Defective system board Replace the system board Defective inverter board Replace the display as...

Page 75: ...n an up to date backup of your hard drive at all times in case of errors or failures Solving Hard Drive Problems Problem Probable Cause Solution s Reading hard drive takes an unusually long time after restarting the computer System entered Hibernation due to low battery condition and is now exiting from it Give the system time to restore the previously saved data to its exact state before Hibernat...

Page 76: ...isabled Num Lock function is not enabled Press the Shift NumLk keys to enable the Num Lock function and embedded numeric keypad The Num Lock icon on the status panel turns on Embedded numeric keypad is disabled and Num Lock function is on External numeric keypad is connected to the computer Disconnect the external numeric keypad from the computer Solving Memory Problems Some common causes and solu...

Page 77: ...any TSR terminate and stay resident applications are running Remove from memory any TSR applications that you do not need Solving Minor Problems continued 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01915 201919 201920 201922 201925 solving html 8 of 8 6 27 2004 5 05 13 AM ...

Page 78: ...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 the critical hard drive files Ensure that backup tapes diskette ar...

Page 79: ...isplay 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 01915 201919 201920 201922 201925 compaq1 html 2 of 2 6 27 2004 5 05 13 AM ...

Page 80: ...nit System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Wedge Kit Miscellaneous Parts Documentation and Software Description Spare Part Number 1 Keyboards 2 Upper CPU Cover w Palmrest and TouchPad 331423 001 or 140678 001 3 Speaker Assembly w Cable 331420 001 4 Battery Pack Li ion 386500 001 140664 001 5 CPU Base Asse...

Page 81: ...919 and 1920 CPU Base Assembly Enclosure with Shield Bottom Plastics Not Shown 331421 001 140679 001 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20checked 20ok NOTEBOOKS 905 201906 201910 201915 201919 201920 201922 201925 system html 2 of 2 6 27 2004 5 05 14 AM ...

Page 82: ...lay Assembly Mass Storage Devices Miscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Wedge Kit Miscellaneous Parts Documentation and Software Description Spare Part Number 1 Processors 2 Hard Drive Battery Charger Board w RTC Battery 331412 001 3 Modem w Shield 56 0 Kbps Data Fax 331429 001 4 Low Voltage Differential Signal Board For 13 3 Display Panel 331411 001 5 Voltage...

Page 83: ...cifications Pin Assignments Battery Pack Operations Display Panel Assembly System Unit Boards Display Panel Assembly Mass Storage Devices Miscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Wedge Kit Miscellaneous Parts Documentation and Software Description Spare Part Number Display Panel Assembly w Cable 13 3 inch TFT 331409 001 or 140666 001 Display Panel Assembly w Cabl...

Page 84: ...ss Storage Devices System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Wedge Kit Miscellaneous Parts Documentation and Software Description Model No Spare Part Number 1 Diskette Drive w cable 1 44 MB 3 5 inch 1905 1906 1910 1915 1919 1920 331428 001 2 LS 120 Drive 1922 1925 TDB 3 Hard Drive 4 8 GB 6 4 GB 4 0 GB 6 4 GB...

Page 85: ...w Interface Connector 1905 1906 1910 1915 1919 1920 1922 1925 331427 001 140682 002 24X CD Drive w cable 1905 1906 1910 1915 1919 1920 1922 1925 102122 001 TBD 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 0 201915 201919 201920 201922 201925 mass html 2 of 2 6 27 2004 5 05 16 AM ...

Page 86: ...mbly Mass Storage Devices Miscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Wedge Kit Miscellaneous Parts Documentation and Software Miscellaneous Hardware and Plastics Kit Spare Part Number 331418 001 Models 1905 1906 1910 1915 1919 1920 Spare Part Number 140675 001 Models 1922 1925 Description Quantity 1 Display Panel Assembly Hinge Cover Left 1 each 2 Display Panel Ass...

Page 87: ... each Battery Eject Latch Not Shown 1 each Display Screw Hole Covers Not Shown 4 each Battery Knob Spring Coil Not Shown 2 each Volume Switch Knob Not Shown 1 each Display Eject Latch Not Shown 1 each RJ11 Jack Assembly Not Shown 1 each Rubber Feet Not Shown 2 each 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20checked 20ok NOTEBOOK 905 201906 201910 201915 20191...

Page 88: ...dge Kit System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Wedge Kit Miscellaneous Parts Documentation and Software Miscellaneous Hardware and Plastics Wedge Kit Spare Part Number 331424 001 Models 1905 1906 1910 1915 1919 1920 Spare Part Number 140680 001 Models 1922 1925 Description Quantity 1 Diskette Drive Shield...

Page 89: ...nt Bracket 1 each Top and Bottom Wedge Cover Not Shown 331425 001 System to Wedge Interface Board 1 each Eject Plunger Knobs Not Shown 2 each Plunger Spring Coil Not Shown 2 each 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20checked 20ok NOTEBOOK 05 201906 201910 201915 201919 201920 201922 201925 newp61 html 2 of 2 6 27 2004 5 05 18 AM ...

Page 90: ...n Assignments Battery Pack Operations Miscellaneous Parts System Unit Boards Display Assembly Mass Storage Devices Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Wedge Kit Miscellaneous Parts Documentation and Software Description Spare Part Number 1 AC 45W Adapter 358976 001 2 Integrated 10 100BaseT Ethernet Port Replicator 331407 001 or 140663 001 Miscellaneou...

Page 91: ...age Devices Miscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Wedge Kit Miscellaneous Parts Documentation and Software Description Spare Part Number Quick Restore CD 1 US PR Mexico APD PRC Korea AUS Japan UK France Italy Belgium 122314 001 122314 161 122314 371 122314 AA1 122314 AD1 122314 371 122314 291 122314 031 122314 051 122314 061 122314 AK1 Quick Restore CD 2 Belgi...

Page 92: ...o not specify the 3 digit suffix 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 005 May 011 November 006 June 012 December 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 2...

Page 93: ...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 junctions Gener...

Page 94: ...yrofoam 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 201915 201919 201920 201922 201925 electro html 2 of 2 6 27 2004 5 05 21 AM ...

Page 95: ... Tool and Software Requirements To service the computer you need the following 5 millimeter nut drivers for screwlocks and standoffs Small Phillips P Zero screwdriver Small standard screwdriver Small pair of tweezers Diagnostics software Screws The screws used in the computer are not interchangeable If an incorrect screw is used during the reassembly process it can damage the unit Compaq strongly ...

Page 96: ...es Maintenance and Service Guide Models 1905 1906 1910 1915 1919 and 1920 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20check 201915 201919 201920 201922 201925 service html 2 of 2 6 27 2004 5 05 22 AM ...

Page 97: ...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 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 fr...

Page 98: ...xcessive force during disassembly and reassembly When handling the plastic parts use care Apply pressure only at the points designated in the maintenance instructions Return to Removal Replacement Procedures 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01915 201919 201920 201922 201925 cables1 html 2 of 2 6 27 2004 5 05 22 AM ...

Page 99: ...preader Processor Display Panel Assembly 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 4 Remove the wedge IMPORTANT The battery pack should be removed before performing any internal maintenance on the computer WARNING Metal objects can damage the battery pack as we...

Page 100: ... a battery pack as this damages the pack makes it unusable and exposes potentially harmful battery components There are no field serviceable parts located inside the battery pack NOTE The Compaq Presario 1900 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 l...

Page 101: ...les and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the battery pack complete the following steps 1 Prepare the computer for disassembly 2 Turn the unit over 3 Slide the battery pack release bu...

Page 102: ...mbly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board Insert the battery pack into the chassis slot located on the right side of the unit and push in 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20che 201915 201919 201920 201922 201925 BPack html 2 of 2 6 27 2004 5 05 25 AM ...

Page 103: ... Drive Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the hard drive complete the following steps 1 Prepare the computer for disassembly 2...

Page 104: ...al Board Fan Assembly System Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 0 201915 201919 201920 201922 201925 Hard html 2 of 2 6 27 2004 5 05 25 AM ...

Page 105: ... Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the keyboard complete the following steps 1 Prepare the computer for disassembly 2 Partial...

Page 106: ...nal Board Fan Assembly System Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20che 201915 201919 201920 201922 201925 KeyB1 html 2 of 2 6 27 2004 5 05 26 AM ...

Page 107: ...e Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board To remove the memory module complete the following steps 1 Prepare the computer for disassembly 2 Release and lift ...

Page 108: ...tial Signal Board Fan Assembly System Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20che 1915 201919 201920 201922 201925 rmvdimm html 2 of 2 6 27 2004 5 05 27 AM ...

Page 109: ...s Removing the Modem Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the modem complete the following steps 1 Prepare the computer for disa...

Page 110: ...nal Board Fan Assembly System Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20che 201915 201919 201920 201922 201925 modem html 2 of 2 6 27 2004 5 05 29 AM ...

Page 111: ...rvice Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board Low Voltage Differential Signal Board To remove the heatspreader with thermal pad complete the following steps 1 Prepare the co...

Page 112: ...ge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board NOTE When replacing the heatspreader ensure that the thermal pad under the heatspreader is properly replaced 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 heat1 html 2 of 2 6 27 2004 5 05 31 AM ...

Page 113: ...siderations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the processor complete the following steps 1 Prepare the computer for disassembly 2 Release and lift the keyboard 3 Remove the...

Page 114: ... it 5 Insert a small blade screw driver under the right side of the processor Gently lift up the left side of the processor while rocking up and down the right side until the it releases from the socket This is necessary to prevent damage to the socket pins To replace the processor complete the following steps 1 Align the processor over the socket using the screw holes as a guide Apply equal press...

Page 115: ...ies Maintenance and Service Guide Models 1905 1906 1910 1915 1919 and 1920 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01915 201919 201920 201922 201925 process html 3 of 3 6 27 2004 5 05 32 AM ...

Page 116: ...ors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the 13 3 display panel assembly refer to the section for Removing the 13 3 inch Display Panel Assembly To remove the 12 1 display panel assembly complete th...

Page 117: ...ard Fan Assembly System Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 disp1 html 2 of 2 6 27 2004 5 05 33 AM ...

Page 118: ...derations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the Upper CPU Cover with Palmrest and TouchPad complete the following steps 1 Prepare the computer for disassembly 2 Remove the ...

Page 119: ...Fan Assembly System Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board Not shown Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20che 201915 201919 201920 201922 201925 CPU1 html 2 of 2 6 27 2004 5 05 34 AM ...

Page 120: ...ions Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board Low Voltage Differential Signal Board To remove the hard drive battery charger board complete the following steps 1 Prepare the computer for di...

Page 121: ...DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board front center portion of the chassis To replace the hard drive battery charger board reverse the previous procedures 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20che 201915 201919 201920 201922 201925 HDBC html 2 of 2 6 27 2004 5 05 35 AM ...

Page 122: ...charge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the converter board complete the following steps 1 Prepare the computer for disassembly 2 Remove the keyboar...

Page 123: ...sassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board board connector and remove from the chassis To replace the converter board reverse the previous procedures 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 sysbd5 html 2 of 2 6 27 2004 5 05 36 AM ...

Page 124: ...rostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the LVDS Interface Board complete the following steps 1 Prepare the computer for disassembly 2 R...

Page 125: ...ssembly System Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20che 201915 201919 201920 201922 201925 LVDS html 2 of 2 6 27 2004 5 05 37 AM ...

Page 126: ...trostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the fan assembly complete the following steps 1 Prepare the computer for disassembly 2 Remove t...

Page 127: ...e DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board 8 Disconnect the fan cable and lift the fan assembly from the slot on the system board To replace the fan assembly reverse the previous procedures 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 newge1 html 2 of 2 6 27 2...

Page 128: ...ecifications Pin Assignments Battery Pack Operations Removing the System Board Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly To remove the system board complete the following steps 1 Prepare the computer for disassembly 2 Remove the keyboa...

Page 129: ... Converter Board Low Voltage Differential Signal Board Fan Assembly System Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 sysbd html 2 of 2 6 27 2004 5 05 38 AM ...

Page 130: ... Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the speaker assembly complete the following steps 1 Prepare the computer for disassembly 2 Remove the keyboard 3 Remove th...

Page 131: ...rd Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board To replace the speaker assembly reverse the previous procedures 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01915 201919 201920 201922 201925 rmvspkr html 2 of 2 6 27 2004 5 05 39 AM ...

Page 132: ...Battery Pack Operations Disassembling the Removable Drive Wedge Electrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board 1 Prepare the computer for disassembl...

Page 133: ...nal Board Fan Assembly System Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20che 201915 201919 201920 201922 201925 wedge html 2 of 2 6 27 2004 5 05 40 AM ...

Page 134: ...es and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the CD ROM or the DVD Drive with shield attached complete the following steps 1 Prepare the computer for disassembly 2 Disassemble the wedge 3...

Page 135: ... Board Fan Assembly System Board Speaker Assembly Disassembling the Wedge DVD or CD ROM Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 port1 html 2 of 2 6 27 2004 5 05 41 AM ...

Page 136: ...tic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the System to Wedge Interface board complete the following steps 1 Prepare the computer for disassemb...

Page 137: ...al Board Fan Assembly System Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01915 201919 201920 201922 201925 wedge10 html 2 of 2 6 27 2004 5 05 42 AM ...

Page 138: ...ctors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the Diskette Drive or the LS 120 Drive with shield attached complete the following steps 1 Prepare the computer for disassembly 2 Disassemble the wedge 3 ...

Page 139: ...stem Board Speaker Assembly Disassembling the Wedge DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board attached reverse the previous procedures Next Step 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20che 201915 201919 201920 201922 201925 dISK html 2 of 2 6 27 2004 5 05 43 AM ...

Page 140: ...vice Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Hard Drive Keyboard Memory Module Modem Heatspreader Processor Display Panel Assembly Upper CPU Cover with Palmrest and TouchPad Hard Drive Battery Charger Board Converter Board To remove the Wedge to the Port Replicator Interface board complete the following steps 1 Prepare the computer for disassembly 2...

Page 141: ...e DVD or CD Drive System to Wedge Interface Board Diskette Drive Wedge to Port Replicator Interface Board Replicator Interface board and lift the board from the unit To replace the Wedge to Port Replicator Interface board reverse the previous procedures 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 201915 201919 201920 201922 201925 disp71 html 2 of 2 6 27 ...

Page 142: ...Procedures Specifications Pin Assignments Battery Pack Operations Physical and Environmental Computer Specifications U S Metric 12 1 TFT Dimensions Height Depth Width 13 3 TFT Dimensions Height Depth Width 1 1 11 6 9 2 1 2 11 6 9 2 234mm 294 7mm 29mm 234mm 294 7mm 30 5mm Weight 12 1 TFT 13 3 TFT Wedge 4 5 lbs 5 0 lbs 1 8 lbs Stand Alone Battery Pack Power Requirements Nominal Operating Maximum Ave...

Page 143: ... 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 to 9 14 km Shock Operating 10 G 11 ms half sine Non operating 240 G 2 ms half sine Vibration Operating 0 5 G Nonoperating 1 5 G NOTE Applicable product safety standards specify thermal limits for plastic surfaces Compaq Presario 1900 Series Portable Computers opera...

Page 144: ...rocedures Specifications Pin Assignments Battery Pack Operations System Interrupts IRQ Device s 0 System timer 1 Standard 101 102 Key or Microsoft Natural Keyboard 2 Programmable interrupt controller 3 Ambit Modem 4 Communications Port COM1 5 NMA2 Audio Controller 6 Standard Floppy Disk Controller 7 Printer Port LPT1 8 System CMOS real time clock 9 Intel 82371AB EB PCI to USB Universal Host Contro...

Page 145: ...hics Controller 12 PS 2 Compatible Mouse Port 13 Numeric data processor 14 Intel 82371AB EB PCI Bus Master IDE Controller 15 Intel 82371AB EB PCI Bus Master IDE Controller Next Page 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20checked 20ok NOTEBOOKS 201906 201910 201915 201919 201920 201922 201925 SysInterp html 2 of 2 6 27 2004 5 05 46 AM ...

Page 146: ... and 1925 Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal Replacement Procedures Specifications Pin Assignments Battery Pack Operations System DMA DMA Device s 0 NMA2 Audio Controller 1 NMA2 Audio Controller 2 Floppy Disk Controller 3 Parallel Port ECP Mode 5 Free 6 Free 7 Free 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPA...

Page 147: ...064 0064 Standard 101 102 Key or Microsoft Natural Keyboard 0070 0071 System CMOS real time clock 0081 008F Direct memory access controller 00A0 00A1 Programmable interrupt controller 00C0 00DF Direct memory access controller 00E0 00E1 Motherboard Resources 00F0 00FF Numeric Data Processor 0170 0177 Intel 82371AB EB PCI Bus Master IDE Controller 01F0 01F7 Intel 82371AB EB PCI Bus Master IDE Contro...

Page 148: ...NeoMagic NMG5 Graphics Controller 000B0000 000BFFFF NeoMagic NMG5 Graphics Controller 000C0000 000CBFFF NeoMagic NMG5 Graphics Controller 000E4000 000FFFFF System board extension for PnP BIOS 00100000 03FFFFFF System board extension for PnP BIOS 04000000 04000FFF Texas Instruments PCI 1225 CardBus Controller 04001000 04001FFF Texas Instruments PCI 1225 CardBus Controller F4000000 F40000FF PCI Comm...

Page 149: ...le in this Form Factor Diskette Drive or LS 120 Drive Storage Drives 3 5 Drive LS 120 Drive Capacity per Diskette High Low Low 720KB High 1 44MB Low 720KB High 120MB Diskette Size 3 5 3 5 Number of LED Indicators Read Write 1 1 Number of Drives Supported 1 1 Drive Rotation rpm 360 720 Transfer Rate Kbps Sec Low 31 High 62 Low 313 565 High 313 565 Bytes per Sector 512 512 Sectors per Track High Low...

Page 150: ...DMA 33 U DMA 33 U DMA 33 Logical Configuration Cylinders Heads Sectors per Track Bytes per Sector Not Available Not Available Not Available Not Available 13424 4 63 512 16383 6 63 512 Seek Times Typical including settling in ms Single Track Full Stroke Read N A Write N A Read N A Write N A Read N A Write N A Read 13ms Write 14ms Read 2 5ms Write 3 0ms Read 23ms Write 24ms Read 13ms Write N A Read ...

Page 151: ...9mm 128mm 12 7mm 129mm Weight 300g Not Available 280g 270g Rotational Speed 5000RPM Not Available 2300 RPM 2300RPM Typical Transfer Rate Sustained Data Transfer Rate 16 67MB s 3600KB s Not Available Not Available 16 6MB s PIO 5400KB s 16 7MB s PIO 5400KB s Access Time Average Random Access Time 110ms Not Available 150ms 140ms Spin Up Time 5s Not Available 15s 1 3 8s Data Buffer Capacity 1Mbit Not ...

Page 152: ...odels and Features Controls and Lights Status Panel Left Side Components Right Side Components Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors Compaq Discovery 1900 Series Portable Computer Models Model 1922 Model 1925 Display 12 1 TFT 13 3 TFT Processor Intel Celeron 300 MHz w 512K Cache Intel PentiumII 333 MHz w 256K Cache Intel Celeron 333 MHz w 128...

Page 153: ...odels 1905 1906 1910 1915 1919 and 1920 Port Replicator Connectors Port Replicator Components Power Management 1 800 AT COMPAQ privacy and legal statement file C SERVICE 20MANUALS COMPAQ 20_ 20chec 01915 201919 201920 201922 201925 npage1a html 2 of 2 6 27 2004 5 05 49 AM ...

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