Only For Training And Service Purposes - LG KP105 Service Manual

4. TROUBLE SHOOTING
Checking Flow
TP1.VMIC=2.5V
LGE Internal Use Only
Make a call
Check voltage level
of TP1
YES
Check component
status around MIC
OK
Check status of MIC
OK
Replace U103 or
Replace PCB
- 70 -
NO
Check U103
Re-solder or
NG
replace the Component
Re-solder or
NG
replace Microphone
Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes