Acer Aspire S5-391 Acer S5-391 Notebook Service Guide - Page 86

Extend MIC and Speaker Failure If the extended microphone or speaker fails, perform the following: Start OK Check audio/B NG Cable assemble OK OK Connect it well Check audio/B NG OK Check audio/B NG cable OK Swap M/B Swap audio/B Swap audio/B cable Figure 4-8. Extend MIC and Speaker Failure Troubleshooting 4-12