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Service Manual Troubleshooting and Diagnostics 3-9
Symptom Call Center:
Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
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.
Erratic display. Display cable
connection.
Switchboard PCA.
Display assembly.
Motherboard.
Check display cable
connection.
Bright or missing
pixels or lines.
See quality statement on
page 5-2.
Display cable
connection.
Display assembly.
Check display cable
connection.
See quality statement on
page 5-2.
Punctured display. Declared to be caused by
customer abuse.
Vertical crack near
center of display.
Usually caused by
closing display with
pencil-sized object on
keyboard.
Declared to be caused by
customer abuse.
Scratched display
glass.
Declared to be caused by
customer abuse.