Illustrated Parts Catalog | Removal & Replacement Procedures|Specifications
Pin Assignments|Battery Pack Operations
Models and
Features
Controls and
Lights
Internet
Zone
Buttons and
Lights
Front Bezel
Components
Left Side
Components
Right Side
Components
Bottom of
Unit
Back
Connectors
Port
Replicator
Components
Port
Replicator
Connectors
Welcome to the Presario 1800 Series Maintenance and Service Guide. This
online guide is designed to serve the needs of those whose job it is to repair
Compaq products. The
Preface shows symbol conventions, Technician Notes and Serial Number
The
locations on the unit.
Notice contains the copyright and trademark information.
Power
Management
for Windows
98
This MSG will be periodically maintained and updated online as needed. For
content comments or questions, contact Tech Support..
To report a technical problem, contact your Regional Support Center or IM Help
Center.
Illustrated Parts Catalog | Removal & Replacement Procedures |
Specifications
Pin Assignments | Battery Pack Operations
Notice
The information in this guide is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR
EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING,
PERFORMANCE, OR USE OF THIS MATERIAL.
This guide contains information protected by copyright. No part of this guide may be
photocopied or reproduced in any form without prior written consent from Compaq
Computer Corporation.
1999 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq, Presario 1800 Series Registered U. S. Patent and Trademark Office.
Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation.
Windows 98 is a trademark of Microsoft Corporation.
The software described in this guide is furnished under a license agreement or
nondisclosure agreement. The software may be used or copied only in accordance with
the terms of the agreement.
Product names mentioned herein may be trademarks and/or registered trademarks of
their respective companies.
Maintenance and Service Guide
Compaq Presario 1800 Series Portable Computer
First Edition (August 1999)
Compaq Computer Corporation
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Preface
This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when
servicing the Compaq Presario 1800 Series Portable Computers.
Compaq Computer Corporation reserves the right to make changes to the Compaq Presario 1800
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 indicates that failure to follow directions could result in
damage to equipment or loss of data.
IMPORTANT:
Text set off in this manner presents clarifying information or specific instructions.
Text set off in this manner presents commentary, sidelights, or interesting points of
NOTE:
information.
Technician Notes
WARNING: Only authorized technicians trained by Compaq should repair this equipment. All
troubleshooting and repair procedures are detailed to allow only subassembly/module level
repair. Because of the complexity of the individual boards and subassemblies, the user should
not attempt to make repairs at the component level or to make modifications to any printed
circuit board. Improper repairs can create a safety hazard. Any indications 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 1800 Series Portable Computer documentation set
Illustrated Parts Catalog | Removal & Replacement Procedures |
Specifications
Pin Assignments | Battery Pack Operations
Product Description
Models and
Features
Controls and
Lights
Internet
Zone
Buttons and
Lights
Front Bezel
Components
Left Side
Components
Right Side
Components
Bottom of
Unit
Back
Connectors
Port
Replicator
Components
Port
Replicator
Connectors
Power
Management
for Windows
98
Compaq
Presario
1800 Series
Portable
Computers
are a new
generation
of
multimedia
portable
computers
with a thin
and lightweight
design,
outstanding
audio and
video,
advanced
core
features,
and
attractive
styling.
The 1800T
Series
allows
configure-toorder (CTO)
accessibility,
providing a
range of
outstanding
and
innovative
features and
components.
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting
Preliminary
Steps
Clearing the
Power-On
Password
This section covers troubleshooting information for the Compaq Presario 1800 Series
Portable Computers. The basic steps in troubleshooting include:
1. Follow the
Preliminary Steps.
Power-On Self
Test (POST)
Compaq
Diagnostics
Diagnostic Error
Codes
Troubleshooting
Without
Diagnostics
Solving Minor
Problems
Contacting
Compaq
Support
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 message.
When following the recommended actions in the Sections on
Diagnostic Error Codes perform them in the order listed. Rerun POST after
each recommended action until the problem is solved and no error message
occurs. Once the problem is solved, do not complete the remaining
recommended actions.
NOTE:
If the problem is intermittent, check the computer several times to
verify that the problem is solved.
Illustrated Parts Catalog | Removal & Replacement Procedures |
Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
System Unit
Boards
Display
Assembly
Mass Storage
Devices
Miscellaneous
Cable Kit
Miscellaneous
Hardware Kit
Miscellaneous
Plastics Kit
Miscellaneous
Parts
Documentation
and Software
This section provides a breakdown of spare parts and
identifies the spare part ordering number associated with
each item for Compaq Presario 1800 Series Portable
Computers.
Weight19.94 oz565 gm
Contrast Ratio150:1 mini
Brightness120 cd/mm^3
Total Power ConsumptionInformation not available
Top of Page
Memory Expansion
System MemoryExpansion Board
64-MB
64-MB
Memory Expansion
Total Memory
Memory
64-MB
32-MB96-MB
64-MB
64-MB
Diskette or LS120 Drive
Capacity per Diskette (High/Low)
Diskette Size
Number of LED Indicators (Read/Write)
Number of Drives Supported
Drive Rotation (rpm)
Transfer Rate (Kbps)
64-MB128-MB
128-MB192-MB
Diskette DriveLS120 Drive
1.44 MB/720KB120 MB
3.5"3.5"
01
11
300720
5005458
Bytes per Sector
Sectors per Track (High/Low)
Tracks per Side (High/Low)
Access Times
Track-to-Track (ms)
Average (ms)
Setting Time (ms)
Latency Average (ms)
Cylinders (High/Low)
Number of Read/Write Heads
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Hard Drive
512512
18/9
80
3
94
15
100
801736
22
20
112
800
41.67
Capacity Per Drive
Drive Type
Logical Configuration
Cylinders
Heads
Sectors per track
Bytes per sector
Seek Times
(Typical, Including settling in ms)
Single track
Average
Full stroke
Transfer Rate At Interface
Hard Drive
4.8-GB 6.4-GB 10.0-GB18.0-GB
4.8-GB6.4-GB10.0-GB18.0-GB
11648
3
190/330
512
8647
4
190/330
512
11968
6
190/330
512
16383
6
Not available
512
4
14
24
33.3 MB/s33.3 MB/s33.3 MB/s33.3 MB/s
4
14
24
4
14
24
2.5 (Read)
12 (Read)
23 (Read)
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CD/DVD Drive
Dimensions
Weight
Rotational Speed
Typical Transfer Rate
Sustained Data Transfer
Rate
Access Time
Average Random Access
Time
CD/DVD Drive
4x DVD6x DVD24x CD-ROM
128 x 129 x 12.7 mm 128 x 129 x 12.7mm 128 x 129 x 12.7 mm
0.27 kg0.28 kg<0.27 kg
2300 rpm3450 rpm4225 rpm
5400 KB/s
8100 KB/s3600 KB/s
140 ms
140 ms 120 ms
Spin Up time
Data Buffer Capacity
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Battery Pack
Dimensions
Height
Length
Width
Weight
3.8 s <15 s2.7 s
128 KB512 KB128 KB
Battery Pack
Lithium Ion (Li ion) *
0.8 in (20.3 mm)
5.7 in (145 mm)
3.1 in (78.7 mm)
0.90 lb (408.2 g)
Battery Pack Operating Time
2 hr 30 min*
Energy
Nominal Open Circuit Voltage
Capacity
Power
14.4 V
3200 mAH
46.1 WH
Environmental Requirements
Operating Temperature
Non-operating Temperature
Charging Temperature
32° F (0-50° C)
-20° C -60° C
5° C-45° C
*The battery operating time changes depending on your power management settings, system
components, options, and applications you use.
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Connector Pin Assignments
This section provides connector pin assignment tables for Compaq Presario 1800 Series Portable
Computers. For more information on connectors, refer to the sections on Back Connectors and Port
Replicator Connectors.
NOTE: The signals in all tables of this appendix are considered active high unless otherwise
indicated by an asterisk (*).
Parallel Connector
PinSignalPinSignal
1Strobe*10Acknowledge*
2Data Bit 011Busy
3Data Bit 112Paper Out
4Data Bit 213Select
5Data Bit 314Auto Linefeed*
6Data Bit 415Error*
7Data Bit 516Initialize Printer*
8Data Bit 617Select In*
9Data Bit 718-25Signal Ground
* = Active low
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Serial Connector
ConnectorPinSignal
1
2
Carrier Detect
Receive Data
3
4
5
6
7
8
9
Keyboard/Mouse
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Ready to Send
Clear to Send
Ring Indicator
ConnectorPinSignal
1
2
3
4
5
6
Data 1
Data 2
Ground
+5 V
Clock 1
Clock 2
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External VGA Monitor
ConnectorPinSignal
1
2
3
4
5
6
7
8
Red Analog
Green Analog
Blue Analog
Not connected
Ground
Ground Analog
Ground Analog
Ground Analog
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9
10
11
12
13
14
15
Universal Serial Bus
+5V
Ground
Monitor Detect
DDC2B Data
Horizontal Sync
Vertical Sync
DDC2B Clock
ConnectorPinSignal
1
2
3
4
+5V
Data Data +
Ground
Top of Page
Modem
ConnectorPinSignal
1
2
Unused
Tip
3
4
5
6
Ring
Unused
Unused
Unused
Top of Page
TV Out
ConnectorPinSignal
1
2
Ground
Composite
3
Ground
Top of Page
Game Port
ConnectorPinSignal
1
2
3
4
5
+5V
SWA
RBTA
GND
GND
6
7
8
9
10
11
12
13
14
RBTB
SWB
+5V
+5V
SWC
RBTC
RMSO
RBTD
SWD
15
RMSI
Top of Page
S Video
ConnectorPinSignal
1
2
3
4
Ground
Ground
SYR
SCG
Top of Page
Port Replicator Connector
PinSignalPinSignalPinSignalPinSignal
1Adapter Power21Serial Port CTS41Not Connected61Switch C
2Adapter Power22Serial Port DCD42Power Cycle62Switch D
3Adapter Power23Serial Port DSR43Keyboard Clock63MIDI Input
4Adapter Power24Serial Port TXD44Keyboard Data64MIDI Output
5Adapter Power25Serial Port RTS45Mouse Clock65Not Connected
6Adapter Power26Monitor DDC46Mouse Data66USB Power
7Not Connected27Monitor DDC47Lp Select67USB Power
8Printer Data 028Monitor Indicator48Lp Paper End68USB Power
9Printer Data 129V. SYNC49Lp Initialize69USB Power
10Printer Data 230Ground50Lp Busy70USB A11Printer Data 331H.SYNC51Lp Error71USB A+
12Printer Data 432Ground52Lp Acknowledge72USB B13Printer Data 533Blue53Lp AutoFeed73USB B+
14Printer Data 634Ground54Lp Strobe745V
15Printer Data 735Green55Joystick Data A755V
16Lp Indicator36Ground56Joystick Data B76Not Connected
17Port Replicator Dock
Indicator
18Serial Port RXD38Ground58Joystick Data D78Ground
19Serial Port RI39Composite TV Out59Switch A79S-Video SCG
20Serial Port DTR40Not Connected60Switch B80Ground
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Battery Pack Operations
This appendix covers the following information concerning battery pack 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
● Software applications
● Installed options
● Display brightness
● Hard drive usage
● Changes in operating temperature
● Type and number of installed PC Cards
NOTE:
The power consumption requirements for PC Cards vary widely. Some cards drain the battery pack
very rapidly.
Battery pack operating time can be increased by as much as 50 percent by controlling the energy required by the computer
and the energy stored in the battery pack.
Minimizing the Energy Required
To minimize the energy required by the computer, follow these guidelines:
● Set the power conservation levels in the Power Management utility to Maximum.
● Customize the timeout value to work more efficiently with the applications. The length of battery life
depends on the values selected.
Maximizing the Energy Stored
To maximize the energy stored in the battery pack, follow these guidelines
● Condition the battery 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.
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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, complete the following steps:
1. Plug in the AC adapter and allow the battery to charge until the battery charging status icon turns off. Your
battery gauge may show four bars (and Windows may report 100%) before the battery charging status icon
turns off. Do not unplug the AC adapter until the battery charging status icon disappears.
2. Unplug the AC adapter and allow the battery to drain until the computer reaches hibernation and turns itself
off. Do not plug in the AC adapter during this process or you will need to restart with Step 1. You
may use the computer while the battery is draining.
3. Plug in the AC adapter and begin using the computer.
The table below shows the approximate battery pack charge times.
Approximate Battery Charge Time
ComputerOn LineOff Line
Li ion Battery Pack 4.5 hours 2:50 hrs
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Disposing of a Used Battery Pack
In the 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 exposes potentially harmful battery components.
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Power Management for Windows 98
The following power management features are available for conserving AC power and extending battery operating time:
● Power Management Settings
● Hibernation Mode
● Sleep Mode
● Battery Operating Time
● Rebooting After a Lockup
● Recovering From a Loss of Electrical Power
● Servicing the Computer - Full Off Mode
Power Management Settings
Differing patterns of computer use determine the level of power management. These different power management levels
can be activated based on the amount of time passed since the last system activity. System activity examples include
keyboard or mouse movement, DVD/CD playback (while under program control that monitors Sleep), and modem use.
Select different power settings or schemes through Power Management.The optional settings are Home/Office Desk,
Portable/Laptop, and Always On. Change the following settings from the default settings:
● when the computer goes into Sleep (Standby) mode
● when the screen times out and goes blank
● when the hard drive goes into low power mode.
Each of these system components sleeps after the selected or default periods of inactivity. (The setting for hard drive must
be less than or equal to the setting for System.)
IMPORTANT:
If the computer is on a network, Compaq recommends System Standby be set to Never.
There are five categories of power management settings under the Control Panel. The default setting for each feature is
listed below in the tables.
Power Management Properties
Always on Plugged inRunning on Batteries
System Standby
Turn OFF Monitor
Turn OFF Hard Disks
CAUTION: The settings on the Alarms tab have been preset for the computer to run at
its best. Changing any of these settings could cause the computer to function improperly.
It is recommended that these settings be left at their default values.
Power Management Properties
Alarms:
Low Battery Alarm: 10%
Critical Battery Alarm 0%
Alarm Actions:Notification: Text
Power Mode: No Action
Compaq Presario 1800 Series Computers have two levels of power management: Hibernation and Sleep.
Hibernation mode occurs by pressing the Power button once. The computer saves the contents of the computer memory
to the hard drive. This is followed by the computer turning off.
Sleep mode is a low-power mode, also referred to as Standby mode. It occurs by pressing the Fn+F4 function key or by
clicking the Start button, then Shutdown, then Standby.
CAUTION: While in Sleep mode, the computer will maintain system information and open
files. Unsaved information will be lost if the computer is turned off prior to system wakeup, or if a power loss occurs while using the AC adapter.
The following table shows the conditions and indicators for getting in and out of the various power management modes,
Sleep, Hibernation, and Off.
Hibernation and Sleep Functions
ModeTo InitiateTo EndIndicators
Manual - Fn+F4 key
Flashing Power light*
combination or click the Start
Sleep
button on the Windows Taskbar,
then point to Shutdown, then
click Standby.
Time-Out Default - 15 minutes
Press any key.
*Moon icon appears on status display
(1800 Series only)
if using battery power.
Computer will not automatically
enter Sleep mode if on AC
power.
Manual - Press Power Button
Power light is off, screen is blank*
once
*Power icon does not appear on status
Hibernate
Press Power
display (1800 Series only)
Button once
Off
Time-Out Default - If your
battery is low or after 1 hour of
Sleep. Computer will not
automatically enter Hibernation
mode if on AC power.
Standard - Perform normal
Windows shutdown using the
Start button on the Windows
Taskbar.
Manual* - Press and hold down
the Power button for 4 seconds.
*The Manual shutdown mode is
not recommended unless the
Standard shutdown mode does
not work.
Press Power
Button once
No Power light (or icon), screen is blank.
Hibernation Mode
Hibernation helps conserve battery life and protect the data. Hibernation can be a routine power-saving event or the result
of a low battery. As the computer enters Hibernation, it automatically saves the content of the computer memory to the
hard drive before it turns off.
The computer will automatically enter Hibernation mode when the battery has little power left or when the computer
(operating on battery power) has been in Sleep mode for more than one hour. Activate Hibernation mode by pressing the
Power button once.
To restart the computer, press the Power button once. When the computer enters or wakes from Hibernation mode, it
displays a Progress window.
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Sleep Mode
Selecting Sleep mode instead of turning off the computer when finished allows the computer to wake up faster than turning
it completely off and saves power over the active (On) mode.
Activate Sleep mode by pressing Fn+F4. Or, click Start, select the Shut Down option, and click Standby.
Servicing the Computer - Full Off Mode
The computer must be turned off completely when installing or replacing components in the system. Follow the instructions
above for properly putting the computer into Off mode, unplug from the outlet, and remove the battery
(see battery
section for instruction on removing battery).
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Rebooting After a Lockup
To reboot the computer (as if from a cold start), when the keyboard is frozen or the screen is locked, press and hold down
the Power button for at least four seconds, which will cause a manual shutdown. Then, restart it with a single press of the
Power button. If it still does not recover, press the Power button and hold for four seconds to shut it down, then remove
the battery or unplug the AC power for at least 30 seconds. Reinsert the battery or reconnect AC power and press the
Power button once to reboot.
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Recovering From a Loss of Electrical Power
Loss of electrical power will cause the Internet PC to automatically turn off. This may cause loss of data because the
Microsoft Windows operating system is not able to properly close all files and programs.
Loss of power may be caused by one of the following:
● Electrical power service is interrupted.
● The power cord is accidentally disconnected.
If power surges or sags, the display and status lights may flicker, and the computer may automatically restart. If an
improper shutdown occurs, ScanDisk, a Microsoft Windows utility program, will automatically run once power is restored.
ScanDisk will determine if the improper shutdown caused any errors on the hard disk. These errors may occur if the
Microsoft Windows operating system was not able to properly close all files before the shutdown. If no errors are found, the
restart process will continue. If ScanDisk does detect errors, follow the instructions shown to continue the restart process.
Work that was not saved prior to the lockup may be lost.
Use of a surge suppressor, line conditioner, or uninterruptible power supply (UPS) may protect the computer from damage
caused by power surges or sags.
If a power failure occurs or the power cord disconnects while the computer is turned on, turn off the computer until normal
service has been restored. ScanDisk may run to check the hard disk for errors caused by the improper shutdown the next
time the computer turns on.
Top of Page
Battery Operating Time
Battery operating time is affected by variables such as the following:
● Power conservation settings
● Hardware configuration
● Software applications
● Installed options
● Display brightness
● Hard drive usage
● 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
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Preliminary Steps
Before running POST, complete the following preliminary steps:
1. If a power-on password has been established, type the password and press the
Enter key. If the password is not known, clear the password.
2. Run Computer Checkup.
3. Turn off the computer and its external devices.
4. Disconnect any external devices that you do not want to test. Do not disconnect
the printer if you want to test it or use it to log error messages.
IMPORTANT:
5. Install loopback plugs in the serial and parallel connectors if you would like to test
these ports.
6. Ensure the hard drive is installed in the computer.
7. Ensure that the battery pack is inserted in the computer and the computer is
connected to an external AC power source.
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 with and without the external device connected.
When the preliminary steps are completed, you are ready to run
Illustrated Parts Catalog | Removal & Replacement Procedures |
Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting
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 directly
forward of the fan.
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
4. Remove the palmrest cover
with touchpad.
battery pack.
5. Remove the keyboard.
6. Remove the heatspreader.
7. Slide the black switch
toward the front of the
computer to clear CMOS. Hold
the switch in the forward
position for at least 15
seconds to ensure that the
password is cleared. The
switch is located on the back
of the DVD or CD drive in the
middle of the system board.
8. Reassemble the computer.
9. Turn on the computer to
verify that the power-on
password has been cleared. If
it has not been cleared,
repeat Steps 1 through 9.
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Power-On Self Test (POST)
Running POST
To run POST, complete these directions:
Turn off the computer, then turn on the computer. As soon as the Compaq logo appears press the ESC key to clear the logo
and display the POST messages as they occur.
If POST does not detect any errors, the computer will not beep. This indicates successful completion of the POST test. POST
has run successfully and boots from the hard drive (or from a bootable diskette if one is installed in the diskette drive).
If POST detects errors, the errors are indicated by screen and/or audible messages. Refer to "Power-On Self-Test (POST)
Codes" in the tables for a list of POST codes and their relevant descriptions.
NOTE:
Probable CauseRecommended Action
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 Self-Test Messages
102-System Board Failure
DMA, timers, etc.Replace the system board.
162-System Options Not Set
Probable CauseRecommended Action
Configuration incorrectRun Computer Setup.
CMOS reflects that an invalid
configuration has been set.
RAM failure1. Replace the memory modules.
Memory test data error1. Replace the memory modules.
XX000YZZ RAM failureReplace the system board.
Run Computer Setup.
2. Replace the system board.
2. Replace the system board.
XX000YZZ 201-Memory Error
Probable CauseRecommended Action
Probable CauseRecommended Action
Keyboard failure1. Ensure the keys are not depressed during POST.
304-Keyboard or System Unit Error
Probable CauseRecommended Action
Keyboard or system board error1. Replace the keyboard.
1. Replace the memory modules.
2 Replace the system board.
301-Keyboard Error
2. Reconnect the keyboard with the computer off.
3. Replace the keyboard.
2. Replace the TouchPad or mouse.
3. Replace the system board.
601-Diskette Controller Error
Probable CauseRecommended Action
Mismatch in drive type or failure in the diskette
controller
605-Diskette Drive Error
Probable CauseRecommended Action
Mismatch in drive typeRun Computer Setup.
1780-Primary Hard Drive 0 Failure
Probable CauseRecommended Action
Disk 0 failed to respond1. Run Computer Checkup (TEST).
1. Run Computer Checkup (TEST).
2. Check and/or replace cables.
3. Replace the system board.
2. Replace the hard drive.
Hard drive format error1. Run Computer Checkup (TEST).
2. Replace the hard drive.
1782-Hard Drive Controller
Probable CauseRecommended Action
Hard drive controller failure1. Run Computer Setup.
Illustrated Parts Catalog | Removal & Replacement Procedures |
Specifications
Pin Assignments | Battery Pack Operations
Compaq Diagnostics
Compaq Diagnostics is installed on the hard drive of the computer. Run the Diagnostics utilities when you
want to view or test system information and if you have installed or connected devices. If you run Compaq
Diagnostics from a diskette, ensure that it is version 10.11 or later.
The Diagnostics menu includes the following utilities:
■ Computer Checkup (TEST)
■ View System Information (INSPECT)
■ Prepare Computer for a Compaq Service Call (RemotePaq)
If you have a problem you cannot solve, run the Diagnostics utilities before you call for support. Run
Computer Checkup and select to save the device list to a file and to print or to save the log of errors. Run
the View System Information (INSPECT) utility and select to print or to save that information. Have the
files or the printed information available when you call for support.
Computer Checkup (TEST)
Computer Checkup (TEST) determines whether the various computer components and devices are
recognized by the system and are functioning properly. You can display, print, or save the information
generated by Computer Checkup.
Follow these steps to run Computer Checkup:
1. Plug the computer into an external power source. (A low battery condition could interrupt the
program.)
2. Turn on the external devices that you want to test. Connect the printer if you want to print a log of
error messages.
3. Insert the Compaq Diagnostics diskette in drive A.
4. Turn on or restart the computer. The computer starts from drive A, and the Diagnostics Welcome
screen appears.
5. Press Enter to continue. The Diagnostics menu appears.
6. Select Computer Checkup from the Diagnostics menu. A Test Option menu appears.
7. Select View the Device List from the Test Option menu. A list of the installed Compaq devices
appears.
8. If the list of installed devices is correct, select OK. The Test Option menu appears.
NOTE:
9. Select one of the following from the Test Option menu:
If the list is incorrect, ensure that any new devices are installed properly.
■ Quick Check Diagnostics. Runs a quick, general test on each device with a minimal
number of prompts. If errors occur, they display 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 how many times to run 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.
12. Exit the Diagnostics menu.
View System Information (INSPECT)
The View System Information (INSPECT) utility provides information about the computer and installed or
connected devices. You can display, print, or save the information.
Follow these steps to run View System Information (INSPECT) from the Compaq Diagnostics diskette:
1. Turn on the external devices that you want to test. Connect the printer if you want to print the
information.
2. Insert the Compaq Diagnostics diskette 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:
SystemMemory
ROMAudio
KeyboardOperating system
System portsSystem files
System storageWindows files
Graphics
7. Follow the instructions on the screen to cycle through the screens, to return to the list and
Illustrated Parts Catalog | Removal & Replacement Procedures |
Specifications
Pin Assignments | Battery Pack Operations
Diagnostic Error Codes
Diagnostic error codes occur if the system recognizes a problem while running
the Compaq Diagnostic 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.
Retest the system after completing each step. If the problem
IMPORTANT:
has been resolved, do not proceed with the remaining steps.
For the removal and replacement of a particular subassembly, see
Removal
and Replacement Procedures.
Select error codes by number or type:
101 through 114Processor Test
200 through 215Memory Test
300 through 304Keyboard Test
401 through 403Parallel Printer Test
600 through 699Diskette or LS120 Drive Test
1101Serial Test
1701 through 1736Hard Drive Test
501 through 516Video Test
2402 through 2456
2458 through 2480
3206Audio Test
8601 through 8602TouchPad Pointing Device Test
3301 through 6623DVD or CD Test
Processor Test Error Codes
Error
CodeDescriptionRecommended Action
101-xxCPU test failedReplace the processor and retest.
102-xxCoprocessor or Weitek Error1. Run the Configuration and Diagnostics
Utilities.
2. Replace the processor board and retest.
103-xxDMA page registers test failedReplace the system board and retest.
104-xxInterrupt controller master test failed
105-xxPort 61 error
106-xxKeyboard controller self-test failed
107-xxCMOS RAM test failed
108-xxCMOS interrupt test failed
109-xxCMOS clock test failed
110-xxProgrammable timer load data test
failed
113-xxProtected mode test failed
114-01Speaker test failed1. Check system configuration.
2. Verify cable connections to speaker.
3. Replace the system board and retest.
Memory Test Error Codes
200-xxMemory machine ID test failed1. Flash the system ROM and retest.
202-xxMemory system ROM checksum failed
203-xxWrite/Read test failed1. Remove the memory module and retest.
204-xxAddress test failed
211-xxRandom pattern test failed
214-xxNoise test failed
215-xxRandom address test failed
Keyboard Test Error Codes
300-xxFailed ID Test1. Check the keyboard connection. If
301-xxFailed Self-test/Interface Test
302-xxFailed Individual Key Test
304-xxFailed Keyboard Repeat Test
2. Replace the system board and retest.
2. Install a new memory module and
retest.
disconnected, turn off the computer and
connect the keyboard.
2. Replace the keyboard and retest.
3. Replace the system board and retest.
Parallel Printer Test Error Codes
401-xxPrinter failed or not connected1. Connect the printer.
2. Check power to the printer.
402-xxFailed Port Test
403-xxPrinter pattern test failed
Diskette or LS 120 Drive Test
600-xx
601-xxDiskette or LS120 format failed
602-xxDiskette or LS 120 read test failed
603-xx
604-xx
605-xxDiskette or LS120 ID media failed
Diskette or LS120 ID drive types test
failed
Diskette or LS120 write, read,
compare test failed
Diskette or LS120 random read test
failed
3. Install the loop-back connector and
retest.
4. Check port and IRQ configuration.
5. Replace the system board and retest.
1. Replace the diskette media and retest.
2. Check and/or replace the diskette power
and signal cables and retest.
3. Replace the diskette or LS120 drive and
retest.
4. Replace the system board and retest.
606-xxDiskette or LS120 speed test failed
609-xx
610-xx
697-xxDiskette or LS120 type error
698-xx
699-xx
1101-xx
1701-xxHard drive format test failed1. Run the Configuration and Diagnostics
1702-xxHard drive read test failed
1703-xx
1704-xxHard drive random seek test failed
Diskette or LS120 reset controller test
failed
Diskette or LS120 change line test
failed
Diskette or LS120 drive speed not
within limits
Diskette or LS120 drive/media ID
error
Serial Test Error Codes
Serial port test failed1. Check port configuration
Hard Drive Test Error Codes
Hard drive write/read/compare test
failed
1. Replace media.
2. Run the Configuration and Diagnostics
Utilities.
2. Replace the system board and retest.
Utilities and verify drive type.
2. Verify that all secondary drives have
secondary drive capability.
3. Replace the hard drive and retest.
4. Replace the system board and retest.
1705-xxHard drive controller test failed
1706-xxHard drive ready test failed
1707-xxHard drive recalibration test failed
1708-xxHard drive format bad track test failed
1709-xxHard drive reset controller test failed
1710-xxHard drive park head test failed
1715-xxHard drive head select test failed
1716-xx
1717-xxHard drive ECC* test failed
1719-xxHard drive power mode test failed
1724-xxNetwork preparation test failed
1736-xxDrive monitoring test failed
* ECC = Error Correction Code
Hard drive conditional format test
failed
Video Test Error Codes
501-xxVideo controller test failedThe following steps
502-xxVideo memory test failed
503-xxVideo attribute test failed
504-xxVideo character set test failed
505-xx
506-xx
507-xxVideo 40 x 25 mode test failed
508-xx
509-xx
510-xxVideo 640 x 200 mode test failed
511-xxVideo screen memory page test failed
512-xxVideo gray scale test failed
Video 80 x 25 mode 9 x 14 character
cell test failed
Video 80 x 25 mode 8 x 8 character
cell test failed
Video 320 x 200 mode color set 0 test
failed
Video 320 x 200 mode color set 1 test
failed
apply to error codes 501-xx through 516xx:
1. Disconnect external monitor and test
with internal LCD display.
2. Replace the display assembly and retest.
3. Replace the system board and retest.
514-xxVideo white screen test failed
516-xxVideo noise pattern test failed
2402-xxVideo memory test failedThe following steps apply to error codes
2403-xxVideo attribute test failed
2404-xxVideo character set test failed
2405-xx
2406-xx
2408-xx
2409-xx
2410-xxVideo 640 x 200 mode test failed
2411-xxVideo screen memory page test failed
2412-xxVideo gray scale test failed
Video 80 x 25 mode 9 x 14 character
cell test failed
Video 80 x 25 mode 8 x 8 character
cell test failed
Video 320 x 200 mode color set 0 test
failed
Video 320 x 200 mode color set 1 test
failed
2402-xx through 2456-xx:
1. Run the Configuration and Diagnostics
Utilities.
2. Replace the display assembly and retest.
3. Replace the system board and retest.
2414-xxVideo white screen test failed
2416-xxVideo noise pattern test failed
2418-xxECG/VGC memory test failed
2419-xxECG/VGC ROM checksum test failed1. Run the Configuration and Diagnostics
Utilities.
2421-xxECG/VGC 640 x 200 graphics mode
test failed
2422-xxECG/VGC 640 x 350 16 color set test
failed
2423-xxECG/VGC 640 x 350 64 color set test
failed
2424-xxECG/VGC monochrome text mode test
failed
2. Disconnect external monitor and test
with internal LCD display.
3. Replace the display assembly and retest.
4. Replace the system board and retest.
2425-xxECG/VGC monochrome graphics mode
test failed
2431-xx640 x 480 graphics test failure
2432-xx320 x 200 graphics (256 color mode)
test failure
2448-xxAdvanced VGA Controller test failed
2451-xx132-column Advanced VGA test failed
2456-xxAdvanced VGA 256 Color
test failed
2458-xxAdvanced VGA BitBLT testThe following step applies to error codes
2458-xx through 2480-xx:
2468-xxAdvanced VGA DAC test
Replace the system board and retest.
2477-xxAdvanced VGA data path test
2478-xxAdvanced VGA BitBLT test
2480-xxAdvanced VGA LineDraw test
Audio Test Error Codes
3206-xxAudio System Internal ErrorReplace the system board and retest.
TouchPad/Pointing Device Interface Test Error Codes
8601-xxMouse test failed1. Replace the TouchPad and retest.
2. Replace the system board and retest.
8602-xxInterface test failed
DVD or CD Drive Test Error Codes
3301-xxDVD or CD drive read test failed1. Replace the DVD or CD and retest.
2. Verify that the speakers are connected.
3305-xxDVD or CD drive seek test failed
6600-xxID test failed
6605-xxRead test failed
6608-xxController test failed
6623-xxRandom read test failed
3. Verify that drivers are loaded and
properly installed.
4. Replace the DVD or CD drive and retest.
5. Replace the system board and retest.
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