LG KF510C Service Manual page 90

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Check micropho ne s ound
ho le
Mic bias ON
when call?
Yes
CN700 co nn ector
is g ood?
Yes
Check Signal
L100, L101
As semble
No Check mic . Bias
line
No Make reco nnection
on CN700
No
Replac e
micro phon e
(MIC100)
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5. Trouble shooting
LGE Internal Use Only