LG KP105 - Page 69

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4. TROUBLE SHOOTING
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Check U103
Check voltage level
of TP1
Check component
status around MIC
Re-solder or
replace the Component
Check status of MIC
Re-solder or
replace Microphone
YES
NO
OK
OK
NG
NG
Replace U103 or
Replace PCB
TP1.VMIC=2.5V
Make a call
Checking Flow