Service Manual
Troubleshooting and Diagnostics
3-11
Symptom
Call Center: Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
General problems
Close all applications before
entering (or allowing notebook
to enter) Standby or
Hibernation mode.
If problem appears after
installing new software
(including drivers), uninstall
that software. Contact software
vendor for additional support.
Notebook resumes
slowly from Standby
mode
Notebook can take a minute or
longer to resume if 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 to
Standby mode as
expected
Notebook won’t suspend
if connection to another
computer is active.
If notebook is busy, it normally
finishes current operation
before suspending.
Does not
automatically enter
Hibernation mode as
expected
Make sure hibernate support is
enabled in Power in Control
Panel. Also, make sure
Hibernate timeouts (Power
Schemes tab) for AC and
battery power are not set to
Never.
Display
Dark display, no light
Make sure notebook is 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.
Display cable
connection
SDRAM modules
CPU module
Display assembly
Motherboard
Check cable
connections.
Replace SDRAM
modules.
Make sure CPU
module is installed
properly, replace
CPU module.
Check display cable
connections, replace
display assembly.
If external monitor
displays no image,
replace motherboard.
White display
Adjust display brightness.
Display assembly
Switchboard PCA