LG KP500 - Page 81

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5. Trouble shooting
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Check microphone sound
hole
Assemble
Check All of
CN101 solder?
Y
es
Yes
CN101
CN501
TP3
TP1 TP2
Yes
No
N
o
Yes
No
Check Signal
TP1, TP2 (2.5V)?
44pin connector
(CN501)is good?
Mic bias ON
(2.5V)when
call?
(
TP3
)
Check mic. Bias
line
Repair the 44pin
conn. (CN501)
Replace
microphone
(MIC101)
No
Replace KEY FPCB