LG GS290 - Keypad Back Light Trouble

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4. TROUBLE SHOOTING
GS290 Operational Description Revision B
LG Electronics 80/136 LGE Property
4.9 Keypad back light trouble
Check Points
-Signal path is connected well
TP1
LD401LD404LD405
2
04
R
0
2
1
314R
0
2
1
224R
021
LD403
1
2
4R
021
604R
021
VBAT
LD400LD402
EVL5M02200
VA405
6
14
R
021
KEY_BL
KEY LED
TP1