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Main PCB Trouble Diagnosis
5. When No Sound
Check start
Does sereen appear?
1. Confirm AC connection
2. Confirm Power S/W ON
3. Check Video or other PCBs
Is the Sound input Jack
correctly connected?
Check the connection of
Jack(PDP or AV device)
Is the Speaker correctly
connected?
Check the connection of
Speaker
IC704(CXA2069) has a trouble.
So, exchange JACK PCB.
Is TP L_OUT or R_OUT normal?
IC 700 (MSP3420)has a trouble.
So, exchange JACK PCB.
Is TP RIGHT or LEFT normal?
IC701 IC702 (TDA7480)has a trouble.
So, exchange JACK PCB.
Is JP708 s SOUND output JACK
PCB normal?
SPEAKER or SOUND CABLE has a trouble.
So, exchange SPEAKER or SOUND CABLE
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