Acer Aspire One AO531h - Touchpad Failure; Internal Speaker Failure

144 Chapter 4
TouchPad Failure
If the TouchPad doesn’t work, perform the following actions one at a time to correct the problem. Do not
replace a non-defective FRUs:
Internal Speaker Failure
If the internal Speakers fail, perform the following actions one at a time to correct the problem. Do not replace
a non-defective FRUs:
Sound Problems
If sound problems are experienced, perform the following actions one at a time to correct the problem.
1. Reboot the computer.
2. Navigate to Start´ Control Panel´ System and Maintenance´ System´ Device Manager. Check
the Device Manager to determine that:
START
Check M/B
T/P FCC
Check Upper
Cover
Replace
Mainboard
Reassemble
T/P FFC to
Mainboard
Swap/
Reassemble T/
P board or T/P
FFC
OK
NG
NG
OK
START
Check M/B
Speaker cable
Check Lower
Cover
Replace
Mainboard
Reassemble
Speaker cable
to Mainboard
Swap Lower
Cover
OK
NG
NG
OK