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F
Audio abnormal
Have picture, no sound
Check if voltage of R, L pin of XP202 is normal
No
Check connection between R, L pin of XP202 and PCM1723
Yes
Is N202 and N203 signal output? Yes
No
Check 4558 and surrounding components
Is transistor V208 and V209 for mute usage broken down?
Yes
Replace transistor
No
Normal
12
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