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MIC Working
Operate MIC
NG
connect qwerty
key FPCB cor
rectly?
YES
Qwerty key
FPCB break
down?
NO
Mic on Qwer
ty key FPCB
break down?
NO
Check
C806 = High?
YES
Check C621, ZD604, L604, C418
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This Document can not be used without Samsung's authorization
NO
Connect correctly
YES
Change Qwerty
key FPCB
YES
Change MIC
Change main PBA
NO
9-9
Flow Chart of Troubleshooting
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