Internal Speaker Failure; Internal Microphone Failure - Acer Aspire 4738 Service Manual

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 FRU:

Internal Microphone Failure

If the internal Microphone fails, perform the following actions one at a time to correct the problem. Do not
replace a non-defective FRU:
Chapter 4
Start
Check M/B SPK
cable
OK
Swap M/B
Start
Check M/B Mic.
cable
OK
Swap M/B
Re-assemble the
NG
SPK cable to M/B
NG
Re-assemble the
MIC cable to M/B
123