Acer Aspire 4738 - Internal Speaker Failure; Internal Microphone Failure

Chapter 4 123
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:
Start
Check M/B SPK
cable
Re-assemble the
SPK cable to M/B
NG
OK
Swap M/B
Start
Check M/B Mic.
cable
Re-assemble the
MIC cable to M/B
NG
Swap M/B
OK