HP OMNIBOOK 2100 Service Manual page 63

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.
OmniBook 3000 fan
turns on, no
display, cannot
reset
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.
Secondary battery Check secondary-battery
does not work, main contacts.
battery works
Secondary 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.
3-6 Troubleshooting and Diagnostics
Repair Center: Repair Center:
Likely Causes Comments
An OmniBook 3000 The user must call Technical
may have to be Support and provide proof of
shipped to an HP ownership. Password
service center. removal is restricted to
certain sites. See page 5-1.
Audio PCA (rev 1.0). For an OmniBook 3000 with
serial number TW745... or
lower, replace the audio PCA
if it is marked rev 1.0 on the
corner of the PCA. Also, if
the smaller of the two
connectors on the
motherboard for mounting
the audio PCA is tilted
slightly, replace the
motherboard. (Service note
3000-10.)
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.
Fan.
Secondary battery or
contacts.
Motherboard.
Motherboard. Try cycling the battery
charge.
LCD module If an external monitor
(backlight). displays no image, replace
the motherboard instead.
LCD cables or
connections.
Inverter PCA.
LVDS PCA.
HP OmniBook 2100/3000/3100