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Hands-Free Stereo Headset Working
Hands-free stereo
headset
NG
Button NG?
NO
MIC NG?
NO
SPK NG?
NO
The End
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YES
Check IFC700 & R733
YES
Signal in L
702 = 1.8V?
Change U712
YES
Signal on
in L700,L70
1R731,R732?
Signal on
in C613,
C614?
Change Main PBA
9-11
Flow Chart of Troubleshooting
NO
Change Main PBA
YES
YES
Check IFC700
NO
YES
Check U600 & neighb
NO
oring circuits
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