5-3
ONE POINT REPAIR GUIDE
1. How to Duplicate Problem
Wireless rear speaker doesn’t output a sound.
1-1. Solution
Check SMPS board (No PVDD).
1-2. How to troubleshoot (Countermeasure)
1-3. Service hint (Any picture / Remark)
2. How to Duplicate Problem
Wireless rear speaker doesn’t output a sound.
2-1. Solution
Replace RIC308 (No 12 V).
2-2. How to troubleshoot (Countermeasure)
2-3. Service hint (Any picture / Remark)
Check LED color of RX BOX.
Try to remate or reset.
Color is green? Check SMPS board.
YES
NO
Check SMPS board.14 VA (RIC308 pin2) no input.
AMP 12 V (RIC308 pin4)
no output.
Replace RIC308.Check 3.3 V.
YES YES
NO NO
RIC307
RIC308
RIC307
RIC308
< AMP board top view >
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