LG M237WD - Rgb Video Trouble Shooting

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
C
2009
- 19 -
5. RGB Video Trouble Shooting
Check input signal format
Is it supported?
Check signal , Hsync, Vsync
(R673, R674)
Replace R6 73, R674
Check signal RGB
(R119, R104, R105
C121,C122,C119)
Y
N
Check JK607
Replace JK607
Y
N
Y
Replace R119, R104, R105,
C121,C122,C119
N
IC101 has problem
Y
Check RGB Cable connector
for damage
Y
Wave form of R673(Vsync)
Wave form of R673(Vsync)
Wave form of R104/C121
Wave form of R105/C122
Wave form of R119/C119