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Level 3 Repair
8-3-4. Audio Working
Speaker Working
Operate speaker
NG
Check
Speaker
Connecting
YES
Speaker break
down?
NO
Signal on in
L512, L513?
NO
Signal on in
C406, C407?
NO
Change main PBA
NO
YES
YES
YES
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Reconnecting SPK
Change Speaker
Module
Resolder
L512,L513
HDC501
Resolder
C407, C408
Replace U401
8-12
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