See the Notice for copyright and trademark information, and the Preface for symbol
conventions and Technician Notes.
Click to download ZIP file of complete MSG to hard drive.
This MSG will be periodically maintained and updated as needed.
To report a technical problem, contact your Regional Support Center or IM Help Center.
For content comments or questions, contact the Editor.
Page 2
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.
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.
Online Maintenance and Service Guide
Compaq Presario 5400 Series Personal Computers
June 1999
Page 3
PREFACE
WARNING.GIF
CAUTION.GIF
WARNING.GIF
This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing the
Compaq Presario Series Personal Computers.
Compaq Computer Corporation reserves the right to make changes to the Compaq Presario 5400 Series Personal
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
NOTE:
Text set off in this manner presents commentary, sidelights, or interesting points of
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.
instructions.
Locating Additional Information
The following documentation is available to support this product:
■ Compaq Presario documentation set
■ Introducing Windows 98 Guide
■ Service Training Guides
■ Compaq Service Advisories and Bulletins
■ Compaq QuickFind
■ Compaq Service Quick Reference Guide
■ Compaq Help Center
Page 4
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
Product DescriptionTroubleshootingIllustrated Parts Catalog
POST is a series of diagnostic tests that run automatically when the system is turned on. After the
computer is turned on, POST checks the following assemblies to ensure that the computer system is
properly functioning:
■ Keyboard
■ System board
■ Memory modules
■ Video memory
■ Diskette drives
■ Hard drive
■ Power supply
POST also detects the type of mass storage devices installed in the computer.
If POST finds an error in the system, an error condition is indicated by an audible and/or visual
message. The table below gives explanations of the error codes and a recommended course of action.
NOTE:An external speaker must be installed into the speaker output connector to
hear audible beeps during POST.
Click a link below to find the probable cause and recommended action for a given error message.
Diskette Drive A ErrorKeyboard Controller ErrorSystem BIOS Shadowed
Extended RAM failed at
Keyboard ErrorSystem Cache Error
offset nnn
Failing Bits nnnOperating System Not
System CMOS Checksum Bad
Found
Fixed Disk 0 or 1 FailureParity Check 1System RAM Failed at Offset, nnn
Fixed Disk Controller FailureParity Check 2System Timer Error
Incorrect Drive A TypeReal Time Clock ErrorUMB Upper Limit Segment
Address nnn
Invalid NVRAM Media TypeSystem Battery is DeadVideo BIOS Shadowed
POST Messages
Error messageProbable CauseRecommended Action
Diskette Drive A
Error
Drive A: is present, but fails the BIOS
POST diskette tests
1. Run
Setup.
2. Replace the signal cables.
3. Replace the drive.
Extended RAM
failed at offset nnn
Extended memory not working or not
configured properly
Failing Bits nnnnnn is a map of the bits at the RAM
address which failed the memory test
Fixed Disk 0 or 1
Failure
Fixed Disk
Controller Failure
Incorrect Drive A
Type
Invalid NVRAM
Hard drive is not working or not
configured properly
Hard drive is not working or not
configured properly
Type of diskette in drive A: not
correctly identified
Problem with NVRAM (CMOS) accessReplace the system board.
Media Type
Keyboard Controller
Error
Keyboard, I/O keyboard controller (on
system board), or mouse error
1. Replace the memory modules.
2. Replace the
system board.
1. Run Setup.
2. Replace the
1. Run
Setup.
system board.
2. Replace the signal cable.
3. Replace the hard drive.
1. Run Setup.
2. Replace the
1. Run
Setup.
2. Replace the
system board.
diskette drive.
1. Replace the keyboard.
2. Replace the mouse.
3. Replace the
system board.
Keyboard ErrorKeyboard, I/O keyboard controller (on
system board), or mouse error
1. Replace the keyboard.
2. Replace the mouse.
3. Replace the
Operating System
Not Found
Operating system cannot be located on
either drive A: or C:
Run
Setup.
Parity Check 1Parity error found in the system bus1. Run
2. Replace the
3. Replace the
Parity Check 2Parity error found in the I/O bus1. Run
2. Replace the
Real Time Clock
Real-time clock fails BIOS testReplace the system board.
Error
System Battery is
Dead
RTC battery is dead1. Replace the
2. Run
system board.
Setup.
memory modules.
system board.
Setup.
ISA board (modem).
RTC battery.
Setup.
System BIOS
System BIOS copied to Shadow RAMStatus message. No action required.
Shadowed
System Cache ErrorRAM cache failed the BIOS testRun
System CMOS
Checksum Bad
System RAM Failed
CMOS is corrupted or modified
incorrectly
System RAM failedReplace
Setup.
Run Setup.
memory modules.
at Offset, nnn
System Timer ErrorDMA, timers, etc.Replace the
UMB Upper Limit
Segment Address
nnn
Displays the address nnn of the upper
limit of Upper Memory Blocks,
indicating released segments of the
Status message. No action required.
BIOS
Video BIOS
Shadowed
Video BIOS successfully copied to
shadow RAM
Status message. No action required.
system board.
Page 7
Maintenance and Service Guide
CAUTION.GIF
Compaq Presario EZ2000 Series Computers
Product DescriptionTroubleshootingIllustrated Parts Catalog
This section explains how to use Setup and Compaq Utilities which should be accessed in the following
instances:
■ When a system configuration error is detected during the Power-On Self-Test
(POST)
■ To change factory default settings for some of the computer features
■ To change the system configuration, which is sometimes necessary when you add
or remove optional hardware
■ To set system configuration features
Click a link below to go to the appropriate subsection.
Preparing the Computer
Setup
Accessing Compaq Utilities Options
View System Information (INSPECT)
Preparing the Computer
If you encounter an error condition, complete the following steps before starting problem isolation
procedures:
1
Ensure proper ventilation. The computer should have a 3-inch (7.6 cm) clearance
at the back of the system unit.
2
Turn off the computer and peripheral devices.
CAUTION: Always ensure that the power is off before
disconnecting or reconnecting the mouse, keyboard, or any other
peripheral devices. Disconnecting or connecting the keyboard or
mouse while the unit power is on can damage the system board.
3
Disconnect any peripheral devices other than the monitor and keyboard. Do not
disconnect the printer if you want to test it or use it to log error messages.
4
Install loop-back and terminating plugs for complete testing.
Setup
The Setup utility gives a snapshot of the computer's hardware configuration, aids in troubleshooting,
and sets custom features. Setup recognizes a new internal component or an external device and
automatically updates the configuration screens. Use the Setup utility to:
■ Modify settings for audio, storage, power management, communications, and
input devices
■ Get an overall picture of the computer's hardware configuration
■ Verify configuration parameters in determining problems
■ Set time and date
Running Setup
To access the Setup utility, turn on the computer and press the F10 key when the Compaq logo
appears. A menu will appear on your screen.
NOTE:
The actual menu displayed on your computer may
vary slightly, depending on your configuration.
Accessing Compaq Utilities Options
This section provides information about the menu options accessible from the Compaq Utilities
menu.
Create a Compaq Utilities Diskette
A Compaq Utilities diskette must be created to troubleshoot the system. To create a Compaq Utilities
diskette, complete the following steps:
1
Insert the QuickRestore CD into the CD drive.
2
From the Windows desktop, click on Start, then Program, then Windows
Explorer.
3
Click on the CD drive icon.
4
Double-click on the PCdiags folder.
5
Insert a diskette in the diskette drive.
6
Double-click on the QRST5.exe icon.
7
Press Enter when the QuickRestore label appears.
8
After the CD has completed copying to the diskette, eject the QuickRestore CD.
Running Compaq Utilities
To run Compaq Utilities, turn on or reboot the computer with the Compaq Utilities diskette in the
diskette drive. A menu will appear on your screen.
View System Information (INSPECT)
The View System Information (INSPECT) utility provides information about the system once it has
been configured. INSPECT operates with MS-DOS and provides information about the system
operating environment including:
■ Contents of the operating system startup files
■ Current memory configuration
■ ROM version
■ Type of processor and coprocessor
■ Diskette and hard drives
■ Active printer and communications interfaces
■ Modem
Page 8
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
MSG indexProduct DescriptionTroubleshootingIllustrated Parts Catalog
Diagnostic error codes occur if the system recognizes a problem while running the Compaq Utilities
program. These error codes help identify possibly defective subassemblies.
Tables listed on this page give possible error codes, descriptions of each error condition, and actions
required to resolve the error condition.
IMPORTANT: Retest the system after completing each step. If the problem has
been resolved, do not proceed with the remaining steps.
For assistance in the removal and replacement of a particular subassembly, see
Replacement Procedures.
Removal and
100xx
200xx
300xx
400xx
600xx
Processor
Memory
Keyboard
Parallel (printer)
Diskette drive
1100-xx
1200-xx
1700-xx
2400-xx
3200-xx
Serial
Modem
Hard drive
Video
Audio
3300xx
3300xx
8600xx
CD or DVD Drive
CD-RW Drive
Pointing device
interface
Error
Code
301-xx
302-xx
303-xx
304-xx
Keyboard error codes
DescriptionRecommended Action
Keyboard short test, 8042
self-test failed
Keyboard long test failed
Keyboard LED test, 8042
self-test failed
Keyboard typematic test
failed
The following steps apply to error codes 301xx through 304-xx:
1Check the keyboard connection. If
disconnected, turn the computer off
and connect the keyboard.
2Replace the keyboard and retest.
3Replace the
system board and retest.
Modem error codes
Error
DescriptionRecommended Action
Code
1201-xx
1202-xx
1203-xx
1204-xx
Modem Internal Loop-Back
Test
Modem Time-Out Error
Modem External Termination
Test
Modem Auto Originate Test
The following steps apply to error codes
1201-xx through 1210-xx:
1Refer to modem documentation for
correct Setup procedures.
2Check the modem line.
Replace the modem and retest.
3
1206-xx
1210-xx
Dial Multifrequency Tone Test
Modem Direct Connect Test
Diagnostic Error Codes, continued
Page 9
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
MSG indexProduct DescriptionTroubleshootingIllustrated Parts Catalog
Hard drive ID types test failedThe following steps apply to error codes 1700-
Hard drive format test failed
Hard drive read test failed
Hard drive write/read/compare
test failed
xx through 1799-xx:
1 Run
2 Replace the hard drive signal and power
3 Replace the hard drive and retest.
4 Replace the system board and retest.
Setup and verify drive type.
cables and retest.
1704xx
1705xx
1706xx
1707xx
1708xx
1709xx
1710xx
Hard drive random seek test
failed
Hard drive controller test failed
Hard drive ready test failed
Hard drive recalibration test
failed
Hard drive format bad track
test failed
Hard drive reset controller test
failed
Hard drive park head test failed
1714xx
1715xx
1716xx
1717xx
1719xx
1719-x
1730-x
Hard drive file write test failed
Hard drive head select test
failed
Hard drive conditional format
test failed
Hard drive ECC* test failed
Hard drive power mode test
failed
Hard drive power mode test
failed
Fixed Disk 0 does not support
DMA Mode
1731-x
1740-x
1741-x
1750-x
1751-x
1760-x
1761-x
Fixed Disk 1 does not support
DMA Mode
Fixed Disk 0 failed Set Block
Mode command
Fixed Disk 1 failed Set Block
Mode command
Fixed Disk 0 failed Identify
command
Fixed Disk 1 failed Identify
command
Fixed Disk 0 does not support
Block Mode
Fixed Disk 1 does not support
Block Mode
1790-x
1792-x
1799xx
*Error Correction Code
Disk 0 Configuration Error
Secondary Disk Controller
Failure
Invalid hard drive type failed
Pointing device interface error codes
Error
DescriptionRecommended Action
Code
Error
Code
8601xx
Error
Code
3206xx
Pointing Device Interface
test failed
1. Replace with a working pointing device and retest.
2. Replace the
system board and retest.
Audio error codes
DescriptionRecommended Action
Audio System Internal
Error
Replace the
system board and retest.
CD-RW Drive error codes
DescriptionRecommended Action
xxxx-xx
Error
Code
3301-xx
3305-xx
66XX-xx
CD-RW drive The following steps apply to error codes xxxx-xx
through xxxx-xx and xxxx-xx:
1
2
3
4
CD or DVD Drive error codes
DescriptionRecommended Action
CD or DVD
drive read test
failed
The following steps apply to error codes 3301-xx
through 3305-xx and 66XX-xx:
1Replace the CD or DVD disk and retest.*
2Check the jumper settings on the CD or DVD
drive.
Check and/or replace the power and signal
3
cables and retest.
Replace the CD or DVD drive and retest.
4
* Boot to DOS (Command Prompt only) or Windows (Not Safe Mode). Press
the CD or DVD drive eject button (located on the front bezel) to eject the CD or
DVD and retest.
Page 10
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
Product DescriptionTroubleshootingIllustrated Parts Catalog
This section describes some simple, preliminary tests and guidelines for troubleshooting the
computer.
Checklist For Solving Minor Problems
If you encounter some minor problem with the computer or software application,
go through the following checklist for possible solutions before running any of the diagnostic utilities:
■ Is the computer connected to a working power outlet?
■ Is the computer turned on and the power light illuminated?
■ Are all cables connected properly and seated?
■ Are all of the necessary device drivers installed?
■ Is the CONFIG.SYS file correct?
■ Is the AUTOEXEC.BAT file (MS-DOS) or STARTUP.CMD file correct?
■ Was a nonbootable diskette loaded in the diskette drive at power-up?
■ Are all switch settings correct?
■ Was Computer Setup run after installing options (memory, disk drives, etc.) and
before installing industry standard architecture boards?
Quick checks and possible solutions for problems related to these topics:
Digital DashboardCD driveHard drive
Diskette driveHardware installationUSB ports
Power
are provided in the tables below. The procedure for
resolving hardware conflicts is also described.
CD drive
ProblemProbable
Possible solution
cause(s)
Cannot read
compact disc.
Cannot eject
compact disc
(tray-load
only).
CD drive devices
are not
detected.
CD is not properly
seated in the drive.
Eject the CD, then re-insert it, pressing down
on the CD firmly to correctly seat it in the
drive.
CD has been loaded
Eject the CD, turn it over, then reload.
upside down.
CD may be dirty or
Clean the CD or load another CD.
scratched.
CD is not properly
seated in the drive.
Turn off the computer, insert a straightened
paper clip into the emergency eject hole, then
push firmly. Slowly pull the tray out from the
drive until the tray is fully extended, then
remove the CD.
Power cycle delay. After turning the computer off, wait 30
seconds before turning the computer on again.
CD drive is not
connected properly.
Open the computer and check to see that the
drive cable is connected properly.
Proper driver is not
loaded
Restart the system and make sure the CD
drive drivers are loaded.
DVD drive
ProblemProbable cause(s)Possible solution
Cannot
read DVD
disk
DVD or CD is not properly
seated in the drive.
DVD or CD has been
loaded upside down.
Eject the DVD or CD, press down on the DVD or
CD firmly to correctly seat it in the drive, then
reload.
Eject the disk, turn it over, then reload.
DVD does
not work in
the DOS
mode.
Cannot
eject DVD
disk.
DVD or CD disk may be
dirty or scratched.
Proper drivers are not
loaded.
The system is in the
Sleep mode.
The DVD, diskette, or
hard drive was active
when attempting to eject
the DVD.
DVD disk is not properly
seated in the drive.
Load another DVD disk.
Restart the system and make sure the DVD
drive drivers are loaded.
Press the Power button to bring the system back
to full power, then eject the DVD.
Wait until all drive activity ends (the CD/hard
drive light and diskette drive light will go out),
then try to eject the DVD.
Turn off the computer, insert a straightened
paper clip into the emergency eject hole, then
push firmly. Slowly pull the tray out from the
drive until the tray is fully extended, then
remove the DVD disk.
DVD drive
devices are
DVD drive is not
connected properly.
Open the computer and check to see that the
drive cable is connected properly.
not
detected.
Incorrect driver is
installed.
Ensure the correct driver is installed in
CONFIG.SYS.
Drive has been changed.Make sure the jumper setting is set for "Slave."
Proper drivers are not
loaded.
Restart the system and make sure the DVD
drive drivers are loaded.
Digital Dashboard
ProblemProbable cause(s)Possible solution
Digital
Dashboard
displays
component
icons
Digital Dashboard has not
detected system
components.
When the power button is pressed, the
computer will power-on. The LCD display will
display the following icons: keyboard, mouse,
and monitor. If any of these components are not
detected, the icons will continue to be displayed.
If these components are found, the icons will
disappear.
Digital
Dashboard
display is
Check the power cable
connection to the system
board.
When the power cable is properly connected, the
LCD display will display,"Push To Start."
blank
Resolving Hardware Conflicts
Hardware conflicts occur when two or more peripheral devices attempt to use the same hardware
resources. I/O addresses, interrupts, and DMA channels are the most common hardware resources
used by peripheral devices.
Base I/O address220H
Interrupt IRQ 5
8-bit DMA Channel 1
When different peripheral devices use the same hardware resources at the same time, the devices
and/or the system may not function properly. You can resolve hardware conflicts by ensuring that no
devices are configured to use the same hardware resources. These resources can either be dipswitch
or jumper settings on the peripheral card or software configurable resources. The Computer Setup
selection of your Compaq Utilities allows you to view and modify the settings for the peripheral
devices factory installed in your system. Refer to the User's Guide for the particular peripheral cards
you wish to install for information on how to view and select their settings.
To resolve hardware conflicts:
1Change the hardware settings of your audio card or other peripheral card in your
system if the peripheral card is using any settings used by the factory-installed
devices.
2If you are unsure of the settings of the peripheral cards, you can isolate the
source of the problem by temporarily removing all cards not manufactured by
Compaq, or resetting the default settings and running Compaq Utilities. After
that, add the cards back one at a time until the card that is causing the conflict is
found.
Also see: System
Page 11
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
MSG indexProduct DescriptionTroubleshootingIllustrated Parts Catalog
Either the directory
structure is bad or
there is a problem
with a file.
Computer Setup.
Run
Reformat the hard disk.
Check cable connections.
From the desktop click on the Start menu. Choose
Program
Scandisk to check for problems. If problems exist,
run Scandisk and checkmark the "Automatically fix
errors" box at the bottom to correct the problems.
If a large number of lost allocation units is found,
click on the Start menu. Choose Program
Accessories
Accessories System Tools
System Tools Disk Defragmenter.
Nonsystem disk
message.
Hard drive
operation seems
slow
OR
Hard drive
activity light is
not on,
or stays on
without blinking.
The system is trying
to start from a
diskette that is not
bootable.
The system is trying
to start from the
hard drive but the
hard disk has been
damaged.
Diskette boot has
been disabled in
Computer Setup.
The hard disk files
may be fragmented.
Remove the diskette from the diskette drive.
Insert a bootable diskette into the diskette drive
and restart the computer with Ctrl+Alt+Del.
Run Computer Setup and enable diskette boot.
From the desktop click on the Start menu. Choose
Program
Scandisk to check for problems. If problems exist,
run Scandisk and checkmark the "Automatically fix
errors" box at the bottom to correct the problems.
If a large number of lost allocation units is found,
click on the Start menu. Choose Program
Accessories
Accessories System Tools
System Tools Disk Defragmenter.
Hardware installation
ProblemProbable cause(s)Possible solutions
A new device is
not recognized
as part of the
computer
system.
When the system advised you of
changes to the configuration,
you did not save the changes.
The system may not have
automatically recognized the
new device.
Reboot the computer and follow the
instructions for saving the changes.
Run
Computer Setup and identify the
new device.
The cables for the new external
device are loose, or the power
cables are unplugged.
The power switch for the new
external device is not turned on.
Check all cables.
Turn off the computer, turn on the
external device, and then turn on the
computer to integrate the new device
with the computer.
Power
ProblemPossible Solution
Computer will not turn on.Ensure that the computer is connected to a power
source.
Computer does not automatically
display the date and time.
Computer does not beep during
POST.
Computer powered off
automatically.
The real-time clock (RTC) battery may need to be
replaced.
The speaker volume may have been turned down. Select
the Volume option from the Control Panel and adjust the
volume.
The unit temperature may have been exceeded. Check
the fan for function and blockage.
Click here for replacement procedures.
USB
ProblemProbable cause(s)Possible solution
Port 3
cannot
work with
any slow
speed
devices.
USB device
does not
work with
the system.
The device is plugged
into the wrong port.
The USB device and the
system may use
different USB
architectures.
Check to see if the keyboard is plugged into Port
3.
Ensure that the USB device is properly inserted
into the port.
Ensure that the USB device and the system share
the same USB architecture. (UHCI-compliant
devices will only work with a UHCI-compliant
system, and OHCI-compliant devices will only
work with a OHCI-compliant system).
Diskette Drive
ProblemProbable cause(s)Possible solution
Diskette drive
light stays on.
Diskette may be damaged.
Diskette may be installed
incorrectly.
Software program may be
damaged.
From the desktop click on the
Start menu. Choose Program
Accessories
Scandisk to check for problems.
Remove the diskette and reinsert.
Check the program diskettes.
System Tools
Diskette drive
cannot write
to a diskette.
Diskette drive
cannot read a
diskette.
Diskette is not formatted. Format the diskette.
Diskette is write-protected.Either use another diskette that is
not write-protected or disable the
write protection on the diskette.
Writing to the wrong drive.Check the drive letter in your path
statement.
Not enough space is left on the
diskette.
Diskette is not formatted. Format the diskette.
Using the wrong diskette type for
the drive type.
Reading the wrong drive.Check the drive letter in your path
Use another diskette to write the
information.
Use a diskette that is compatible
with the drive.
statement.
Diskette drive has been disabled
by Computer Setup.
Run
Computer Setup and enable
the diskette drive.
Page 12
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
Product DescriptionTroubleshootingIllustrated Parts Catalog
Supports K56flex and/or ITU-T V.90
14400bps send and receive fax modem with
automatic fallback to 12000, 9600, 7200, 4800,
and 2400bps.
Support fax service Class 1 (EIA/TIA 578).
Support V.80 video ready modem.
Built-in DTE interface with speed up to 115.2kbps
or 57.6kbps, parallel 16550a UART-compatible
interface.
Power Management Registers to PCI Interface.
K56flex and/or ITU-T V.90 56kbits/s for highest
Internet connection rates
Ultrahigh compression throughput due to parallel
access directly to the host PC.
ITU-T V.34 extended rates 33600bps to 2400bps.
V.32terbo, V.32bis and fallbacks.
TIA/EIA 602 standard for AT command set.
V.42 error correction (LAM and MNP).
V.42bis and MNP Class 5 data compression.
Fax modem send and receive rates up to
Fax Mode
Error Correction
14400bps
* V.17, V.29, V.27ter, and V.21 channel 2 *
TIA/EIA 578 Class 1 FAX
Video15-pin VGA
Microphone inMini stereo
Audio Line outMini stereo
(2) DIMM sockets168-pin DIMM
(3) PCI slots32-bit PCI connector
Line in
LCD Panel (Digital Dashboard)10 pin header
Mini stereo
Battery socket2-pin socket
IDE drives40-pin headers, key 20
Diskette drive34-pin header
Fan with active heatsink3-pin header
Power supply20-pin header
USB (Used for Keyboard)2 ports on Rear connector
2 ports on Front 10 pin header
13942 ports on Front 10 pin header
Clear CMOS jumper3 pin header
Top of Page
Page 23
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
Product DescriptionTroubleshootingIllustrated Parts Catalog
Compaq Computer Corporation uses IDE hard disk drives that conform to two different device
0/device 1 implementations. These are Conner mode and ATA-compatible mode. These two modes
are incompatible with one another.
IMPORTANT:Jumper settings are shown on top of the hard drives.
Page 24
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
Home
System board
Hard drives
CD or DVD and
CD-RW drive
Product DescriptionTroubleshooting
Removal &
Replacement
Jumper & Switch
Information
JUMPER & SWITCH INFORMATION
CD and DVD Drive
Optical Device Type CD
Optical Device Speed 40x
Optical Device Transfer Rate From 2500 to 6000KB/s
Interface ATAPI
Transport Type Tray Load
CD-RW Drive
Illustrated Parts
Catalog
Specifications
Optical Device Type CD-RW
Device Recording Speed 4x Max
Device ReWrite Speed 2x Max
Device CD Read Speed 24x Max
Storage Capacity:Data 650MB
Storage Capacity:Music 74 Minutes
Interface EIDE/ATAPI
Transport Type Tray Load
Page 25
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
Illustrated Parts
Catalog
Specifications
Home
Product DescriptionTroubleshooting
Removal &
Replacement
Jumper & Switch
Information
REMOVAL & REPLACEMENT PROCEDURES INDEX PAGE
This section provides general service information for Compaq Series Personal Computers.
Adherence to the procedures and precautions described in this section is essential for safe and
proper service.
Electrostatic Discharge
Service Considerations
Preparation for Disassembly
Mass Storage Devices
Drive Cage
Hard drive
CD or DVD and CD-RW drive
Diskette drive
Serial Number
Left Easy Access Panel
Right Easy Access Panel
Top Access Panel
Rear Access Panel
Fax-Modem Board
Memory Module
Fan/Power Supply Assembly
I/O Board
LCD Display Board
Speaker Assembly
System Board and Components
RTC Battery
Processor/Heatsink Assembly
Chassis Base
Page 26
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
Product DescriptionTroubleshootingIllustrated Parts Catalog
Home
Removal &
Replacement
Jumper & Switch
Specifications
Information
REMOVAL & REPLACEMENT
Electrostatic Discharge (Return to Service Considerations)
A sudden discharge of static electricity from a finger or other conductor can destroy static-sensitive
devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic
device exposed to electrostatic discharge (ESD) may not be affected at all and will work perfectly
throughout a normal cycle. Or 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.
Generating Static
The table below shows the different amounts of static electricity generated by different activities .
Relative Humidity
Event10%40%55%
Walking across carpet35,000 V 15,000 V7,500 V
Walking across vinyl floor12,000 V5,000 V3,000 V
Motions of bench worker6,000 V800 V400 V
Removing DIPS from plastic tubes2,000 V700 V400 V
Removing DIPS from vinyl trays11,500 V4,000 V2,000 V
Removing DIPS from Styrofoam14,500 V5,000 V3,500 V
Removing bubble pack from PCBs26,000 V20,000 V7,000 V
Packing PCBs in foam-lined box21,000 V11,000 V 5,000 V
NOTE: 700 volts can degrade a product!
Preventing Electrostatic Damage to Equipment
Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of
sensitivity. The following proper packaging and grounding precautions are necessary to prevent damage:
■ Protect all electrostatic parts and assemblies with conductive or approved containers
or packaging.
■ Keep electrostatic sensitive parts in their containers until they arrive at static-free
stations.
■ Place items on a grounded surface before removing them from their container.
■ Always be properly grounded when touching a sensitive component or assembly.
■ Place reusable electrostatic-sensitive parts from assemblies in protective packaging
or conductive foam.
Use transporters and conveyors made of antistatic belts and metal roller bushings. Mechanized
equipment used for moving materials must be wired to ground and proper materials selected to avoid
static charging. When grounding is not possible, use an ionizer to dissipate electric charges.
Preventing Damage to Drives
To prevent static damage to hard drives, use the following precautions:
■ Handle drives gently, using static-guarding techniques.
■ Store drives in the original shipping containers.
■ Avoid dropping drives from any height onto any surface.
■ Handle drives on surfaces that have at least one inch of shock-proof foam.
■ Always place drives PCB assembly side down on the foam.
Grounding Methods
The method for grounding must include a wrist strap or a foot strap at a grounded workstation. When
seated, wear a wrist strap connected to a grounded system. When standing, use footstraps and a
grounded floor mat.
Static-Shielding Protection Levels
Method
Antistatic PlasticCarbon-Loaded
Metallized Laminate
Plastic
Voltages
1,5007,50015,000
Grounding Workstations
To prevent static damage at the workstation, use the following precautions:
■ Cover the workstation with approved static-dissipative material. Provide a wrist strap
connected to the work surface and properly grounded tools and equipment.
■ Use static-dissipative mats, heel straps, or air ionizers to give added protection.
■ Handle electrostatic sensitive components, parts, and assemblies by the case or PCB
laminate. Handle them only at static-free workstations.
■ Avoid contact with pins, leads, or circuitry.
■ Turn off power and input signals before inserting and removing connectors or test
equipment.
■ Use fixtures made of static-safe materials when fixtures must directly contact
dissipative surfaces.
■ Keep work area free of nonconductive materials such as ordinary plastic assembly
aids and Styrofoam.
■ Use field service tools, such as cutters, screwdrivers, and vacuums, that are
conductive.
■ Use a portable field service kit with a static dissipative vinyl pouch that folds out of a
work mat. Also use a wrist strap and a ground cord for the work surface. Ground the
cord to the chassis of the equipment undergoing test or repair.
Grounding Equipment
Use the following equipment to prevent static electricity damage to the equipment:
Wrist Straps are flexible straps with a minimum of 1 megohm ±10% resistance to the ground cords. To
provide proper ground, a strap must be worn snug against the skin. On grounded mats without bananaplug connectors, connect a wrist strap with alligator clips.
Heelstraps/Toestraps/Bootstraps can be used at standing workstations and are compatible with most
types of boots and shoes. On conductive floors or dissipative floor mats, use them on both feet with a
minimum of 1 megohm resistance between operator and ground. To be effective, the conductive strips
must be worn in contact with the skin.
Recommended Materials and Equipment
Other materials and equipment that are recommended for use in preventing static electricity include:
■ Antistatic tape
■ Antistatic smocks, aprons, or sleeve protectors
■ Conductive bins, and other assembly or soldering aids
■ Conductive foam
■ Conductive tabletop workstations with ground cord of 1 megohm of resistance
■ Static dissipative table or floor mats with hard tie to ground
The screws used in these products are not interchangeable. If an incorrect screw is used during the
reassembly process, it could cause damage to the unit. Compaq strongly recommends that all screws
removed during the disassembly process be kept with the part that was removed, then returned to
their proper locations.
Memory
Module
Top Access
Panel
Rear Access
Panel
Fax-Modem
Board
Mass Storage
Devices
Fan/Power
Supply
Assembly
I/O Board
IMPORTANT: As each subassembly is removed from the computer, it should
be placed away from the work area to prevent damage.
Cables and Connectors
Most cables used throughout the unit are ribbon cables. These must be handled with extreme care to
avoid damage. Apply only the tension required to seat or unseat the cables during insertion or removal
from the connector. Handle cables by the connector whenever possible. In all cases, avoid bending,
twisting, or tearing the cables, and ensure that they are placed in such a way that they cannot be
caught or snagged by parts being removed or replaced.
CAUTION: When servicing these computers, ensure that cables
are placed in their proper location during the reassembly process.
Improper cable placement can cause severe damage to the unit.
Ribbon Cable Positions
LCD Display
Board
Speaker
System Board
and
Components
Chassis Base
CD and CD-RW DriveHard Drive
Diskette driveI/O Board
Power Supply/Fan Assembly
Page 28
Compaq.com - Compaq Presario Maintenance and Service Guide - Series
United States December 10, 2002
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
Product DescriptionTroubleshootingIllustrated Parts Catalog
The computer serial number should be provided to Compaq whenever
requesting information or ordering spare parts. The
(1) serial number is located on the back of the chassis above the voltage select
switch and inside of the front door on the base directly below the Front I/O
connectors.
Serial Number
Left Easy
Access Panel
Right Easy
Access Panel
Memory
Module
Top Access
Panel
Rear Access
Panel
Fax-Modem
Board
Mass Storage
Devices
Fan/Power
Supply
Assembly
I/O Board
LCD Display
Board
Speaker
System Board
and
Components
Chassis Base
Page 30
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
Product DescriptionTroubleshootingIllustrated Parts Catalog
With the unit lying on right
side, remove one screw from
the (1) rear of the chassis and
lift the Drive Cage Assembly
upward straight out of the
chassis
IMPORTANT: Before removing
the drive cage from the chassis,
disconnect all the drive cables
from the drives.
Return to Section
Index
Page 41
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
Product DescriptionTroubleshootingIllustrated Parts Catalog
Lift up the hard drive bracket,
disconnect the (1) power and
(2) data cable from the hard
drive, and remove the hard
drive bracket with the hard
drive attached from the
chassis.
Removing the Hard Drive
Bracket
NEXT STEP
Page 47
Maintenance and Service Guide
Compaq Presario EZ2000 Series Computers
Product DescriptionTroubleshootingIllustrated Parts Catalog
The power cord set (flexible cord and wall plug) received with the computer
meets the requirements for use in the country where the computer was
purchased.
Power cord sets for use in other countries must meet the requirements of
the country where you use the computer. For more information on power
cord set requirements, contact your Compaq authorized dealer, reseller, or
service provider.
General Requirements
USB
Keyboard
Controls
Rear CPU
Connectors
Power Cord
Set
Requirements
The requirements listed below are applicable to all countries:
1
The length of the power cord set must be at least
6.00 feet (1.8 m) and a maximum of 9.75 feet (3.0
m).
2
All power cord sets must be approved by an
acceptable accredited agency responsible for
evaluation in the country where the power cord set
will be used.
3
The power cord set must have a minimum current
capacity of 10A and a nominal voltage rating of 125
or 250 volts AC, as required by each country's power
system.
4
The appliance coupler must meet the mechanical
configuration of an EN 60 320/IEC 320 Standard
Sheet C13 connector, for mating with appliance inlet
on the Switch Box.
Country-Specific Requirements
CountryAccredited Agency
United StatesUL*
US/CanadaUL and CSA
* The flexible cord must be Type SJT-2 or equivalent, No. 18
AWG, 3-conductor. The wall plug must be a two-pole
grounding type with a NEMA 5-15P (15A, 125V) or NEMA 615P (15A, 250V) configuration.
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.