Table 3-2. Troubleshooting Suggestions - HP OmniBook 7100 Service Manual

If you can't isolate the cause of a problem using the diagnostic tools, you can use the suggestions in
the following table to help find the problem.
Symptom Call Center:
Suggestions
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 1-13.
Startup
Does not boot on Check the power source.
ac or battery
Push system-off button.
Unplug the ac adapter and
remove all batteries, then
reconnect power.
Remove any RAM boards
and try again. Reinsert and
try again.
Does not boot on Check battery level on status
battery (boots on panel and battery LEDs.
ac)
Check battery contacts. If
available, try another battery.
Does not boot from Check floppy drive contacts.
floppy drive
Check boot order in BIOS
Setup.
Check that floppy boot is
enabled in BIOS Setup.
Error message Check for a disk in floppy
such as "Invalid drive.
system disk" or
Remove and reinsert hard
"Auto IDE error"
drive.
Check boot order in BIOS
Setup.
Sluggish startup or Run ScanDisk and Disk
shutdown Defragmenter to check and
optimize the hard drive.
Delete temporary and
unneeded files.
HP OmniBook 7100

Table 3-2. Troubleshooting Suggestions

Repair Center:
Likely Causes
AC adapter.
DC-DC PCA.
RAM board.
CPU module.
Motherboard.
Video PCA.
LCD module.
Hard drive.
Battery or contacts.
DC-DC PCA.
Motherboard.
Floppy drive or
contacts.
Motherboard.
Hard drive contacts.
Hard drive.
Repair Center:
Comments
Check ac adapter. Remove
any RAM boards and retry.
If status panel does not turn
on, reprogram BIOS, replace
DC-DC PCA, replace
motherboard.
If status panel turns on but
display remains off, try
external monitor. If monitor
shows successful boot,
replace LCD module. If
monitor shows activity but
BIOS does not complete,
replace CPU module. If
monitor is blank, replace
video PCA, replace CPU
module, replace
motherboard.
If status panel and display
turn on, BIOS completes, but
OS does not start from hard
disk or from floppy drive,
replace CPU module, then
motherboard. If OS starts
from floppy drive, reload hard
drive, replace hard drive.
If unit boots from floppy drive,
check for corrupt files on
hard drive, reload hard drive,
replace hard drive.
Use same suggestions
shown at left.
Troubleshooting and Diagnostics 3-5