7-6. No Sound
Condition
StepCheck PointRemark
YesNo
1Check waveform Next StepReplace L503,or I501
2Check waveform Next StepReplace I501
3Vcc is 8.3V ?Next StepGo to NO POWER
4Check waveform Next StepCheck/replace QC601
5Vcc is 8.3V?Next StepGo to NO POWER
6X601 is operate?Next StepReplace X601
7Check SCL,SDA Next StepGo to NO POWER2
8,9Input level is 1.4Vp-p?Next StepGo to Sound Adjustment.
10,11Monitor out level is 1.4Vp-p?Next StepReplace I601
12,13Check Ext L,R Next StepCheck/replace A/V circuit.
14,15Check volume control.Next StepReplace I601
16Vcc is 13~16VNext StepGo to NO POWER.
17,18Check sound output.Max: 3W(20Vp-p) Replace I602
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