Compaq iPAQ Legacy-free Manual

Troubleshooting Guide
Compaq iPAQ Desktop Personal Computer
221333-001

NOTICE
© 2000 Compaq Computer Corporation. Except for use in connection with the
accompanying Compaq product, no part of this guide may be photocopied or reproduced
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Troubleshooting Guide
Compaq iPAQ Desktop Personal Computers
First Edition (December 2000)
Part Number 221333-001
Compaq Computer Corporation
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Quick Setup & User’s Guide Contents
Contents
Chapter 1
Troubleshooting
Helpful Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Solving General Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Solving Graphics Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Solving Audio Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Solving Printer Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Solving Hardware Installation Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Solving Network Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Solving Memory Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Solving CD-ROM and DVD Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Solving Software Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Troubleshooting Using Compaq Intelligent Manageability Features . . . . . . . . 1-14
Compaq Configuration Record Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Contacting Compaq Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
Appendix A
Resetting or Clearing CMOS
Resetting CMOS Using Computer Setup (F10). . . . . . . . . . . . . . . . . . . . . . . . . A-1
If You Forget the Power-On or Setup Password . . . . . . . . . . . . . . . . . . . . . A-1
Resetting the Password Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Using the Clear CMOS Button. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
Appendix B
Computer Setup Utilities (F10 Setup)
Using Computer Setup Utilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Appendix C
Compaq Diagnostics for Windows
Using Compaq Diagnostics for Windows. . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-2
Running Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
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Contents Quick Setup & User’s Guide
Appendix D
POST Error Messages
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-1
Appendix E
Drive Protection System (DPS)
Introducing the Drive Protection System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1
Accessing DPS Through Computer Setup. . . . . . . . . . . . . . . . . . . . . . . . . . E-1
Accessing DPS Through Compaq Diagnostics for Windows . . . . . . . . . . . . E-2
Appendix F
Electrostatic Discharge
Preventing Electrostatic Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1
Grounding Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1
Appendix G
Routine Care & Shipping Information
Routine Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-3
CD-ROM Drive Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-4
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-4
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-4
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-4
Shipping Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-4
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Troubleshooting Guide 1-1
chapter 1
Troubleshooting
This guide provides information on how to identify and correct minor disk,
graphics, memory, and software problems. It also explains many of the
messages that may be displayed on the screen, including specific error
messages that may appear during the Power-On Self-Test (POST) at startup.
POST Message Disabled suppresses most system messages during POST,
such as memory count and non-error text messages. If a POST error occurs,
the screen will display the error message. To manually switch to the POST
Messages Enabled mode during POST, press any key (except F10 or F12).
The default mode is POST Message Disabled.
The speed at which the Personal Computer loads the operating system and the
extent to which it is tested are determined by the POST mode selection.
Quick Boot is a fast startup process that does not run all of the system level
tests, such as the memory test. Full Boot runs all of the ROM-based system
tests and takes longer to complete.
Full Boot may also be enabled to run every 1 to 30 days on a regularly
scheduled basis. To establish the schedule, reconfigure your Personal
Computer to the Full Boot Every xx Days mode, using Computer Setup.
✎For more information, refer to appendix B, “Computer Setup Utilities (F10 Setup)” on page 1.
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Troubleshooting
1-2 Troubleshooting Guide
Helpful Hints
If you encounter some minor problem with your Personal Computer, monitor,
or software, refer to the following list of general suggestions before taking
further action:
■Check that the Personal Computer and monitor are plugged into a working
electrical outlet.
■Check to see that the Personal Computer is turned on and the power light is
on.
■Check to see that the monitor is turned on and the monitor power light is
on and not blinking.
■Turn up the brightness and contrast controls of the monitor if the monitor
is dim.
■Press and hold any key. If the system beeps, then your keyboard should be
operating correctly.
■Check all cable connections for loose connections or incorrect
connections.
■If you have installed an operating system other than the factory-installed
operating system, check to be sure that it is supported on the Desktop
Personal Computer. Windows 95 is not supported. To run Windows 98 or
Windows NT 4.0, you must have the Legacy Module installed on the PC.
■Be sure that all the needed device drivers have been installed. For
example, if you are using a printer, you need a printer driver.
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Troubleshooting
Troubleshooting Guide 1-3
Solving General Problems
You may be able to easily resolve the minor problems described in this
section. If a problem persists and you are unable to resolve it yourself, contact
Compaq Customer Support.
Solving General Problems
Problem Cause Solution
Computer won’t turn on. Computer is not connected to an
external power source.
Connect to an external power source.
Cables to the external power source are
unplugged.
Ensure that cables connecting the Personal
Computer to the external power source are
plugged in properly and the wall outlet is active.
Computer appears locked up and won’t
turn off when the power button is
pressed.
Software control of the power switch is
not functional.
Press and hold the power button until the Personal
Computer turns off.
Computer date and time display is
incorrect.
RTC (real-time clock) battery may need
to be replaced. Battery life is
approximately 3 years.
Reset the date and time under Control Panel. If the
problem persists, contact Compaq Customer
Support.
Computer powered off automatically. The unit temperature was exceeded.
The fan may be blocked.
1 Unit is in an exceedingly hot environment. Let it
cool down.
2 Ensure Personal Computer air vents are not
blocked and internal fan is running.
3 Contact Compaq Customer Support.
Computer appears to pause periodically Network driver is loaded and no
network connection is established.
Establish a network connection, or use Computer
Setup or Windows Device Manager to disable the
network controller.
Cursor will not move using the arrow
keys on the keypad.
The Num Lock key may be on. Press the Num Lock key. The Num Lock light
should not be on if you want to use the arrow keys.
LS-120 drive light stays on. Diskette is damaged. In Windows 98 or Windows Millenium, run
ScanDisk. Click
Start > Programs > Accessories > System
Tools > ScanDisk.
In Windows NT or Windows 2000, right click Start,
click Explore, and select a drive. Select
File > Properties > Tools. Under Error-checking,
click Check Now.
Diskette is incorrectly inserted. Remove diskette and reinsert.
Drive is not properly connected. Reconnect drive.
LS-120 drive cannot write to a diskette. Diskette is not formatted. Format the diskette.
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Troubleshooting
1-4 Troubleshooting Guide
Diskette is write-protected. Use another diskette or remove the write
protection.
Writing to the wrong drive Check the drive letter in your path statement.
Not enough space is left on the
diskette.
Use another diskette.
Diskette write control is enabled. Use Computer Setup to check your storage
security feature disabled settings.
A problem has occurred with a disk
transaction.
The directory structure is bad, or there
is a problem with a file.
In Windows 98 or Windows Millenium, run
ScanDisk. Click
Start > Programs > Accessories > System
Tools > ScanDisk.
In Windows NT or Windows 2000, right click Start,
click Explore, and select a drive. Select
File > Properties > Tools. Under Error-checking,
click Check Now.
LS-120 drive cannot read a diskette. Diskette is not formatted. Format the diskette.
You are using the wrong diskette type
for the drive type.
Check the type of drive you are using and use the
correct diskette type.
Drive is not found or not recognized by
the system.
Removable drive is not seated properly. Reseat the drive.
You attempted to hot plug a removable
hard drive that has DriveLock security
enabled.
Shut down Windows and turn off the Personal
Computer. Insert the drive into the MultiBay, if it is
not already inserted. (Refer to the the User’s for
cautions and detailed instructions.) Turn on the
Personal Computer.
Nonsystem disk message The system is trying to start from a
nonsystem disk.
Remove the diskette from the drive or replace it
with a bootable disk.
Solving General Problems (Continued)
Problem Cause Solution
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Troubleshooting
Troubleshooting Guide 1-5
Solving Graphics Problems
If you encounter graphics problems, refer to the documentation that came
with your monitor and to the common causes and solutions listed in the
following table.
Solving Graphics Problems
Problem Cause Solution
Blank screen Monitor is not turned on and the
monitor light is not on.
Turn on the monitor and check that the monitor
light is on.
The cable connections are not correct. Check the cable connection from the monitor to the
Personal Computer and to the electrical outlet.
The energy saver feature has been
enabled.
Press any key or click the mouse button and, if set,
type your password.
The RGB (Red, Green, Blue) input
switch on the monitor is incorrectly
set.
Set the monitor’s RGB input switch to 75 ohms
and, if there is a sync switch, set it to External.
You are using a fixed-sync monitor
and it won’t sync at the resolution
chosen.
Be sure that the monitor can accept the same
sweep rate as the resolution chosen.
The VGA/BNC selector switch is not
properly set.
Set the selector switch to agree with the cable
connection.
Monitor does not function properly when
used with energy saver features.
Monitor without energy saver
capabilities is being used with energy
saver features enabled.
Disable the monitor energy saver feature.
Graphics colors are wrong. The cabling or monitor impedance is
incorrect.
1 If you are using BNC cables, be sure that the
Red, Green, and Blue BNC cables are connected
to the corresponding monitor connectors.
2 Be sure your monitor’s RGB inputs are set to 75
ohms.
Dim characters The brightness and contrast controls
are not set properly.
Adjust the monitor brightness and contrast
controls.
The RGB switch on the back of the
monitor is incorrectly set.
Set the RGB switch (and sync options, if this option
is available) to 75 ohms, with the sync set to
external. Refer to the documentation included with
the monitor.
Screen goes blank. You may have a screen blanking utility
installed or energy saver features are
enabled.
Press any key or type a password.
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