3-8
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Only for training and service purposes.
ONE POINT REPAIR GUIDE
NO SOUND
2-2. OPTICAL
2-2-1. Solution
Replace MAIN board.
2-2-2. How to troubleshoot (Countermeasure)
1) Please check 3.3 VA at FB203.
2) If 3.3 VA is ok, please check OPT_IN signal (R207) when optical mode.
3) If signal is abnormal, replace MAIN board.
2-2-3. Service hint (Any picture / Remark)
< MAIN board top view >
R207
< MAIN board bottom view >
FB203
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