Only For Training And Service Purposes - LG KP105 Service Manual

Checking Flow
0V ~ 2.8V step
waveform
0V ~ 0.7V step
waveform
LD301~LD306
R308~R313
Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

START
Check Voltage Level
Of TP1
YES
Check Voltage Level
Of TP2
YES
Check LED
component
YES
Change PCB
- 65 -
4. TROUBLE SHOOTING
NO
Change PCB
Replace component
NO
Check component
R315 and Q301
NO
Replace component
LGE Internal Use Only
NG