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Flow Chart of Troubleshooting
9-1-3. Audio Working
Speaker(Receiver) Working
Operate speaker
NG
Connect Speak
er/Receiver FP
CB correctly?
YES
Speaker break
down?
NO
Signal on in
C617,C623
(SPK mode)/
C609,C616
(RCV mode)?
NO
Signal on in
C611,C612
(SPK mode)/
C609, C616
(RCV mode)?
NO
Change main PBA
NO
YES
YES
YES
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Connect correctly
Change speaker
ASSY
Connect SPK
ASSY(HDC803)
correctly?
YES
SPK ASSY
FPCB break
down?
NO
Check 2, 4(SPK mode)/
8,10(RCV mode) pins in
HDC803
Change U600
9-6
NO
Connect
correctly
YES
Change
SPK ASSY
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