HP OmniBook XE3 Service Manual page 78

Symptom Call Center:
Suggestions
Battery has short Turn down display
operating time. brightness.
Check Intel SpeedStep
Technology settings in BIOS
Setup Power menu. Try
default setting.
Check settings in Power
Management in Control
Panel.
Certain applications can
cause excess CPU and
power usage. (User can get
Intel Power Monitor from
www.intel.com and monitor
CPU load.)
When using applications with
automatic save feature (such
as MS Word), extend save
time or disable to reduce
hard disk access and power
usage.
PCMCIA card use can affect
battery life. Some PCMCIA
cards draw power even while
not in use.
Heavy modem use can affect
battery operating time.
Battery indicator is Time Remaining is an
inaccurate. estimate based on how
quickly the notebook is using
power at that moment. It
therefore depends on the
current task, and assumes
power will be used at the
same rate until the battery
runs out. So, for example, if
the notebook is performing a
task requiring a good deal of
power (such as reading from
a CD-ROM or DVD), the
value will probably show too
little time remaining.
Display
Dark display, no Make sure notebook is
light. turned on.
Check power supply.
Adjust display brightness.
Press Fn+F5 several times.
Make sure SDRAM modules
are installed properly.
Make sure video PCA is
installed properly.
Make sure CPU module is
installed properly.
Try external monitor.
HP OmniBook XE3
Repair Center: Repair Center:
Likely Causes Comments
Battery. Battery capacity often
decreases after a year or
Motherboard.
more.
Display cable Set DIP switch on video PCA
connection. to match label on display
(see page 2-19).
SDRAM modules.
Check cable connection.
Video PCA.
Replace SDRAM modules.
CPU module.
Replace CPU module.
Display assembly.
Replace display assembly.
Motherboard.
If external monitor displays
no image, replace
motherboard.
Troubleshooting and Diagnostics 3-7