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Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a
hardware defect, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement
should be considered only when a recurring problem exists.
When analyzing an intermittent problem, do the following:
1.Run the advanced diagnostic test for the system board in loop mode at least 10 times.
2.If no error is detected, do not replace any FRU.
3.If any error is detected, replace the FRU. Rerun the test to verify that there are no more errors.
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The diagnostic problems does not identify which adapter or device failed, which installed devices are incorrect,
whether a short circuit is suspected, or whether the system is inoperative.
Follow these procedures to isolate the failing FRU (do not isolate non-defective FRU).
NOTE: Verify that all attached devices are supported by the computer.
NOTE: Verify that the power supply being used at the time of the failure is operating correctly. (See “Power
System Check” on page 73):
1.Power-off the computer.
2.Visually check them for damage. If any problems are found, replace the FRU.
3.Remove or disconnect all of the following devices:
TPrinter, mouse, and other external devices
THard disk drive
TCD-ROM/Diskette drive Module
4.Power-on the computer.
5.Determine if the problem has changed.
6.If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
7.If the problem remains, replace the following FRU one at a time. Do not replace a non-defective FRU:
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Index of AFlash BIOS Error Message
Error MessageAction in Sequence
Hardware Error See “System Diagnostic Diskette” on page 46
VPD Checksum Error Reboot the system and then retest with this diskette.
BIOS Update Program Error Turn off the power and restart the system.
System Error Make sure this AFlash BIOS diskette for this model.
Without AC adapter make sure to connect AC adapter
Battery Low make sure to install a highly charged battery, and reboot
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Index of PQA Diagnostic Error Code, Message
Error CodeMessageAction in Sequence
16XXX Backup battery error Backup battery
01XXX CPU or main board error Reload BIOS default setting.
02XXX Memory error DIMM
03XXX Keyboard error Reset Keyboard
04XXX Video error System board
05XXX Parallel Port error System board
06XXX Serial port or main board error System board
07XXX Diskette drive error Diskette drive
08XXX Hard disk error Reload BIOS default setting
09XXX CD-ROM error Reset CD-ROM cable
10XXX Co-processor error System board
11XXX Pointing device error Reset Keyboard
12XXX Cache test error System board
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To p V i e w
DCIN1 AC adapter connector LIN1 Line-in port
CSW1 LCD cover switch connector HP1 Line-out port
CRT1 VGA port DM1 Memory slot 1
RJ1 RJ11 and RJ45 connectors SW1 Please refer to below for SW1 settings
LCD1 LCD coaxial cable connector RTC1 RTC battery connector
INV1 LED/Inverter board connector U25 Debug purpose only
MDC1 Fax/Modem board connector IR1 FIR connector
KB1 Keyboard cable connector MIC1 Inte rnal microphone and tablet PC lid
U11 855-GM chip (North bridge) CBUS2 PCMCIA ca rd connector
DOCK1 Docking connector SPK1 Speaker cable connector
CPU1 CPU BAT1 Battery connector
USB1 USB port 1 TPAD1 Touchpad connector
USB2 USB port 2 HDD1 Hard disk drive connector
1394 1394 port
Jumper and Connector Locations