Samsung GT-B7330 Service Manual page 48

Flow Chart of Troubleshooting
9-1-3. Audio Working
Speaker(Receiver) Working
Operate speaker
NG
Connect
Speaker Module
FPCB correctly?
YES
Speaker break
down?
NO
Signal on in
C501,C512
(SPK mode)/
C502,C513
(RCV mode)?
NO
Signal on in
C506, C507
(SPK mode)?
NO
Change main PBA
NO
YES
YES
YES
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Connect correctly
Change speaker
ASSY
SPK ASSY
FPCB break
down?
NO
Check 1,3(SPK mode) /
7,9(RCV mode) pins in
HEA500
Replace U600
9-9
YES
Change
SPK ASSY