LG KG245 Service Manual page 82

CIRCUIT
VBAT
R325
KEY_BACKLIGHT
12K
CHECKING FLOW
KEY BACKLIGHT
R329 R330
R328 C316 10 10
12K 27p
Figure 4-20(b). KEY Backlight Trouble
START
Is the level at R325
High?
YES
Are all LEDs
Working?
YES
Backlight will work properly.
- 83 -
4. TROUBLE SHOOTING
VBAT
Q301
C315 R326 R327
27p 10 10
UMX1NTN
NO
Check U102
NO
Check the soldering
each R and LED
NO
Replace or resoldering
component