Key Backlight Trouble - LG KP105 Service Manual

4. TROUBLE SHOOTING

4.8 Key backlight Trouble

TEST POINT
CIRCUIT DIAGRAM
KEY BACKLIGHT
LGE Internal Use Only
TP1
Q301
TP2
LD301~LD306
R308~R313
R308
C322
10
1u
R314
KEY_BACKLIGHT
- 64 -
VBAT
R309 R310 R311 R312
91 91 15 39
Q301
1K
KTC4075E
R315
10K
Copyright © 2008 LG Electronics. Inc. All right reserved.
R313
C323
56
1u
Only for training and service purposes