Backlight Is Not Working - LG -600 Service Manual

5.2.8 Backlight is not Working

START
In the Test mode,
select 'Baseband Test'
then LED Test then
Backlight ON/OFF
NO
R601 is well
connected
YES
NO
Voltage Level
of U601 is high
(Approx.3V)
YES
Voltage value
NO
Of LED PIN1 is same
As the voltage value
Of battery
YES
Replace
D900~D909
Defected Key
backlight
Re-Mount the
R601
Replace the
U600
Replace Battery
- 29 -
5. Data Kit & Test Method
NOTE : To get to the Test mode, press
2945 © #, then hold down * key.
Defected LCD
NO
R906 is well
connected
YES
NO
CON900(PIN15)
Voltage level is
high
YES
NO
CON902(PIN11)
Voltage level is
high
YES
Replace
The LCD Module
EL backlight
Re-Mount the
R906
Re-solder the
CON900
Re-solder the
CON902