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Level 3 Repair
8-9
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8-3-3. Audio Working
z
Lower Speaker Working
C
Operate speaker
NG
Check
SPK_DWN, SPK_
DWP
Soldering
Resolder
NO
YES
Speaker break
down?
YES
Change Speaker
NO
Signal on in
L308, L309
Resolder
L308, L309
SPK ASSY
YES
NO
Signal on in
ether side of
c334?
Replace U312
YES
NO
Change main PBA