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Wireless
General problems. Check TCP/IP setup in
Control Panel.
Check SSID, channel, and
encryption settings.
Mini-PCI card.
Antenna PCAs.
Motherboard.
Make sure all cables are
properly connected to mini-
PCI card and motherboard.
Check for damaged coaxial
cables or connectors.
One-Touch button
problems
Buttons not working
properly.
Make sure correct
applications are associated
with buttons in One-Touch
tab of Keyboard in Control
Panel.
Keyboard cover.
Switchboard PCA.
Motherboard.
On-screen display
does not appear
when button is
pressed.
Make sure Onscreen Display
is enabled in One-Touch tab
of Keyboard in Control Panel.
PCMCIA
General problems. Restart notebook.
Try card in another computer.
If card requires an IRQ, make
sure one is available.
In Device Manager, refresh
device list and check for
conflicts.
Download current drivers
from card manufacturer’s
Web site.
PCMCIA socket.
Motherboard.
Using a flashlight, look for
bent pins inside the PCMCIA
socket.
For model XE4500, if only
one slot is affected, replace
PCMCIA socket. If both slots
are affected, replace
motherboard.
AC adapter
Does not power
notebook.
Make sure AC adapter has
correct power rating.
Try another AC adapter, if
available.
AC adapter.
Motherboard.
AC adapter cannot be
repaired and must be
replaced.
Motherboard
Evidence of spilled
liquid.
Declared to be caused by
customer abuse.
Bent or broken
connectors, or burnt
component.
Declared to be caused by
customer abuse.
Motherboard
cracked.
Declared to be caused by
customer abuse.
Miscellaneous
Clock loses time Plug in AC adapter for 24
hours to charge CMOS
battery.
CMOS battery.
Motherboard.
Charge CMOS battery.
Notebook gets
abnormally hot.
Always set notebook on a flat
surface, so air can flow freely
around and underneath it
Make sure air vents are not
blocked.
Games and other programs
that drive CPU usage toward
100% can contribute.
Heatsink. Check heatsink for damage
or proper fan operation.
Check thermal contact
between CPU and heatsink.
Replace thermal pad if
needed.
3-16 Troubleshooting and Diagnostics Service Manual