HP Omnibook XE4100 Service Manual page 73

Symptom Call Center:
Suggestions
Notebook resumes Notebook can take a minute
slowly from Standby or longer to resume if
mode. network card is installed.
Blinking cursor appears while
system is loading and
checking hardware and
network connections. When
hardware is reinitialized,
Windows desktop appears.
Does not suspend Notebook won't suspend if
to Standby mode as connection to another
expected. computer is active.
If notebook is busy, it
normally finishes current
operation before suspending.
Does not Make sure hibernate support
automatically enter is enabled in Power in
Hibernate mode as Control Panel. Also, make
expected. sure Hibernate timeouts
(Power Schemes tab) for AC
and battery power are not set
to Never.
Display
Dark display, no Make sure notebook is
light. turned on and warmed up.
Check power supply.
Make sure SDRAM modules
are installed properly.
Adjust display brightness.
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.
Punctured display.
Vertical crack near
center of display.
Scratched display
glass.
HP Omnibook XE4100/XE4500
Repair Center: Repair Center:
Likely Causes Comments
Display cable Check cable connections.
connection.
Replace SDRAM modules.
SDRAM modules.
Make sure CPU module is
CPU module. installed properly, replace
CPU module.
Display assembly.
Check display cable
Motherboard.
connections, replace display
assembly.
If external monitor displays
no image, replace
motherboard.
Display assembly.
Switchboard PCA.
Display cable Check display cable
connection. connection.
Switchboard PCA.
Display assembly.
Motherboard.
Display cable Check display cable
connection. connection.
Display assembly. See quality statement on
page 5-2.
Declared to be caused by
customer abuse.
Usually caused by Declared to be caused by
closing display with customer abuse.
pencil-sized object on
keyboard.
Declared to be caused by
customer abuse.
Troubleshooting and Diagnostics 3-9