Chapter 4 111
LCD Failure
If the integrated LCD display fails, use the following flowchart to determine the required action:
No POST or Video
If the POST or video doesn’t display, perform the following actions one at a time to correct the problem.
1. Make sure the computer has power by checking at least one of the following occurs:
•Fans start up
•Status LEDs light up
2. Drain any stored power by removing the power cable and battery and holding down the power button fo r
10 seconds. Reconnect the power and reboot the computer.
3. Disconnect power and all external devices including port replicators or docking stations. Remove any
memory cards and CD/DVD discs. Restart the computer.
If the computer boots correctly, add the devices one by one until the failure point is discovered.
4. Reseat the memory modules.
5. Remove the drives (see “Disassembly Process” on page 42).
6. If the Issue is still not resolved, see “Online Support Information” on page 175.
START
Check LCD
cable connected
Check LCD
cable is good
Check LCD
module is good
Reconnect
LCD cable
Replace LCD
cable
Replace LCD
module
Replace
Mainboard
Close
Close
Close
Close
OK
OK
OK
OK
OK
OKNG
NG
NG
NG