LG CE110 Service Manual page 91

4. TROUBLE SHOOTING
z MAIN KEY Backlight LED Trouble
Is the Voltage level VBAT
LD500 ~515(Main key)
R546 is high voltage?
Q100 is Broken and change
LGE Internal Use Only
START
NO
3.35 ~4.2?
YES
NO
Are all LEDs
Working?
YES
NO
Working?
YES
Q500 IC
- 92 -
Charge Battery
Check the soldering of each
R or Replace LESs not
working
R546 Resoldering and Q500
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