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No audio output
No audio output
Check voltage +34V whether normal or not
at XS703 on Amplifier Board
Yes
Check the control signal whether right or
not at theXP3 PIN7 +2.4V on Main Board
Yes
Replace Amplifier Board
Go
5-4
Check XP502 pin 2&3 34V on Power
No
Board whether normal or not
Replace
No
Replace main Board
Trouble shooting Chart
NO
No
Power Board
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