Table of Contents
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No audio output
No audio output
Check voltage +32V whether normal or not
at XP702 on Amplifier Board
Yes
Check the 24pin FFC connection XP13 on
Main Board and XP703 on Amplifier Board
whether right or not between Main Board
and Amplifier Board
Check the control signal whether right or
not at the U4 PIN6,PIN7,PIN36,on Main
Board and the signal at the XP13 PIN9
PIN10 PIN22
Yes
Replace Amplifier Board
Go
Yes
5-4
Check XP13 pin 14&16 3.3V on Main
No
Board whether normal or not
Refer to CON502 on
Power Board
No
Replace U4 on Main Board,or
replace Main Board
Trouble shooting Chart
Yes
No
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