Acer AT4220A AT4220A Service Guide - Page 71

COMPONENT No Sound

Page 71 highlights

COMPONENT No Sound Z Component Cable plug in? Mute turn-off Volume =30 Earphone remove Check Component cable or Replacement Component Cable Component Source can Display? Check Component cable or Replacement Component Cable Component Sound Normal? Replacement IO/B Component Sound Normal? L1 Chapter 3 END 64

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