Acer AT3720A Service Manual page 69

14. Component no sound
N
Check Component cable
Component Cable
or Replacement
plug in?
Component Cable
Mute turn-off
Volume =30
Check Component cable
Component Source
or Replacement
can Display?
Component Cable
Component Sound
Replacement IO /B
Normal?
Replace
Component Sound
L1
Normal?
M/B
END
Chapter 4 63