No audio
Normal video
off
N
Y
Cancel off
Check audio
13.2V of Power
Board
Normal
voltage
Y
N
Replace Power B/D or repair parts
Check
Speaker
connection
N
Y
Reassemble Speaker and cable
Replace Main B/D
C. Audio error
No audio / Normal video
☞
A20
☞
A21+A18
Disconnection
Established
date
Revised date
Error
symptom
Standard Repair Process
9
Y
N
Replace Speaker or cable
Normal
End
Replace Speaker or cable
Y
N
Normal
End
Y
N
Normal
End
Replace Main B/D
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