5-4
ONE POINT REPAIR GUIDE
3. How to Duplicate Problem
Wireless rear speaker doesn’t output a sound.
3-1. Solution
Replace RIC307 (No 3.3 V)
3-2. How to troubleshoot (Countermeasure)
3-3. Service hint (Any picture / Remark)
Check SMPS board.
Replace RIC307.Check Module or connection.
YES YES
NO NO
5 VA (RIC307 pin2) no input.
PWM 3.3 V (RIC307 pin3) no
output.
RIC307
RIC308
RIC307
RIC308
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