8-3-3. Audio Working
Speaker Working
Operate speaker
NG
Check
Speaker
Soldering
YES
Speaker break
down?
NO
Signal on in
L502, L504?
NO
Signal on in
C407, C408?
NO
Change main PBA
NO
YES
YES
YES
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Resolder
Change Speaker
Resolder
L502,L504
SPK ASSY
Resolder
C407, C408
Replace U500
8-13
Level 3 Repair