HP OmniBook 3000
Troubleshooting and Diagnostics
3-3
•
Consider Causes.
Keep in mind possible causes for each problem, such as the ones listed in the
tables below. Use the diagnostic tools to help find possible causes and repair the problem.
The first table below lists general guidelines for repairing units with certain failure symptoms. The
suggested order of investigation is not mandatory. The second table (page 3-8) shows how you can
use the different diagnostic tools to isolate the cause.
Swapping easily replaced modules with known-good modules is an ideal way to isolate the cause down
to the module level. It is rare for more than one module to be responsible for one failure symptom.
Therefore, replacement of more than one module for a particular symptom should be the exception
rather than the normal expectation.
After replacing a module, it is normal for the unit to be in a confused state and lock up when power is
applied. If this occurs, press the system-off button to restart the computer in a known state.
Table 3-1. Troubleshooting Suggestions
Symptom
Call Center:
Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
To help determine likely causes, check to see what replaceable modules are involved in the system function
and what roles they play. See the table on page 1-10.
Startup
Does not boot on
ac or battery, no
display
Check the power source.
Push system-off button.
Remove any RAM boards
and try again. Reinsert and
try again.
AC adapter
(F1377-60901).
RAM board (varies).
Hard drive (varies).
CPU module (varies).
Motherboard
(F1391-60901).
Check ac adapter.
Remove any RAM boards
and retry.
If unit boots from floppy
drive, reprogram BIOS,
reload hard drive, replace
hard drive. Otherwise,
replace CPU module, then
motherboard.
Does not boot on
battery (boots on
ac)
Check battery level on status
panel and battery LEDs.
Check battery contacts. If
available, try another battery.
Battery or contacts
(F1382-60901).
Motherboard
(F1391-60901).
Does not boot from
floppy drive
Check floppy drive contacts.
Try using alternate
connection (with or without
floppy cable).
Check boot order in BIOS
Setup.
Floppy drive or
contacts
(F1384-60901).
Floppy cable
(F1380-60901).
Motherboard
(F1391-60901).
Error message
such as “Invalid
system disk” or
“Auto IDE error.”
Remove and reinsert hard
drive.
Hard drive contacts.
Hard drive (varies).
If unit boots from floppy
drive, check for corrupt files
on hard drive, reload hard
drive, replace hard drive.
Sluggish startup or
shutdown.
Run ScanDisk and Disk
Defragmenter to check and
optimize the hard drive.
Delete temporary and
unneeded files.
Use same suggestions
shown at left.
Password has been
forgotten
The unit may have to be
shipped to an HP service
center.
The unit may have to
be shipped to an
HP service center.
Password removal is
restricted to certain sites.
See page 5-1.
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