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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. TROUBLE SHOOTING
START
Check
VBAT-
TP3
(on
F-KEY)&MLED-
TP4
(on KEY PCB)
Check BATTERY
Replace U104(SGR)
& U101(BD6095)
No
No
Check All of LEDs solder
Yes
Yes
Yes
Check GPIO
signal(KEY_BL-
TP2
&SU
B_KEY_BL-
TP1
)
Voltage
KEY_LED is operating