HP OmniBook 7100 Service Manual page 53

Symptom Call Center:
Suggestions
Password has been Verify proper ownership, then
forgotten follow the removal procedure
with the owner and log the
appropriate data—see page
5-1.
Power/Battery
Short battery Turn down display
operating time brightness.
Check power management
settings in BIOS Setup. Try
the default settings.
Inform user that certain
applications can cause
excess power usage. (User
can get power monitor from
www.intel.com and monitor
CPU load.)
Heavy modem use can affect
battery operating time.
Does not run on Check battery contacts. If
battery, empty available, try another battery.
battery indicator
Battery does not Check the power source.
charge
Check battery contacts. If
available, try another battery
and ac adapter.
Check for high ambient
temperature and blocked air
vents.
Second battery Try swapping the two
does not work, main batteries.
battery works
Check contacts on second
battery.
Second battery does not
charge until main battery is
fully charged.
Battery indicator is Completely charge and
inaccurate discharge the battery 2 to 4
cycles in the unit.
Display
Dark display, no Adjust display brightness.
light
Press Fn+F5 several times.
Try external monitor.
White display Adjust display brightness.
Erratic display
Bright or missing See quality statement on
pixels or lines page 5-2.
3-6 Troubleshooting and Diagnostics
Repair Center: Repair Center:
Likely Causes Comments
The user must call Technical
Support and provide proof of
ownership. Password
removal is restricted to
certain sites. See page 5-1.
Battery. Battery capacity often
decreases after a year or
Motherboard.
more.
Battery or contacts.
Motherboard.
Battery or contacts. Check ac adapter.
AC adapter. Check fan.
Motherboard.
Heatsink (fan).
DC-DC PCA.
Second battery or
contacts.
Motherboard.
DC-DC PCA. Try cycling the battery
charge.
Motherboard.
LCD module If an external monitor
(backlight). displays no image, replace
the video PCA instead, then
Display cable or
motherboard.
connections.
Inverter PCA.
LVDS PCA.
LCD module.
Inverter PCA.
LVDS PCA.
Display cable or
connections.
LCD module.
LCD module. See quality statement on
page 5-2.
Display cable or
connections.
HP OmniBook 7100