LG KG270 Service Manual - Page 66
Backlight is OK?
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4. TROUBLE SHOOTING Checking Flow START Backlight is OK? YES Check Operation After LCD changes NO Change PCB OK Change LCD NG C221=2.8V Control Signal= Refer to next page Check Control Signal and Power Including soldering status NG Replace component Or change PCB OK Check soldering NG Replace CN200 status of CN200 OK Change PCB - 67 -
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4. TROUBLE SHOOTING
- 67 -
START
Backlight is OK?
Change PCB
YES
NG
Check Operation
After LCD changes
NO
Check Control
Signal and Power
Including soldering status
C221=2.8V
Control Signal=
Refer to next page
NG
Replace component
Or change PCB
Change PCB
OK
Check soldering
status of CN200
OK
Change LCD
OK
NG
Replace CN200
Checking Flow