Q346
L3 Service Manual
8、Receiver not working:
Solution：
1. Assembly the receiver or change it.
2. Check the receiver circuit verify it is shorted with grounding or not.
3. Check R714/R715/C712/C713/RV707/RV708
4. Re-Solder the CPU (U0100) or change it.
9、Speaker not working:
Solution：
1.
Assembly the speaker or change it.
2. Check the speaker circuit verify it is shorted with grounding or not.
3. Re-Solder the CPU (U0100) or change it.