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ONE POINT REPAIR GUIDE
7. NO USB
When unit is connected to USB, no audio and video from SET.
7-1. IC501 (MT8560)
7-1-1. Solution
Replace IC501 (MT8560).
7-1-2. How to troubleshoot (Countermeasure)
1) Check CN202 connector and FFC cable.
2) If there is short soldering on CN202, re-soldering CN202.
3) If problem still occurs, check 5 V (CN202 pin4 ~ pin8).
- If no output, check IC150 on MAIN board.
- If OK, check USB1+, USB1- signal.
- If there is no signal, replace IC501.
7-1-3. Service hint (Any picture / Remark)
< JACK board top view >
< JACK (W/O MIC) board bottom view >
CN202
pin4 ~ pin8 : 5 V
pin10 : USB1+
pin11 : USB1-
CN202
pin4 ~ pin8 : 5 V
pin10 : USB1+
pin11 : USB1-