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LGE Internal Use Only
Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
6. RGB Video
Check input signal format.
Is it supported?
Check RGB Cable conductors
for damage or open conductor.
Check EDID
I2C Signal
R138, R139(SDA,SCL).
Check JK1104
H/V_Sync/R/G/B Signal Line.
ok
ok
ok
No
No
R
e-download EDID data ,Replace Mstar(IC101) or Main Board.
ok
Replace Jack.
Check DSUB_DET.
Replac e R1146 or R1147.
No
Check Mstar LVDS Output.
Replace Mstar(IC101) o r Main Board.
ok
No
Summary of Contents for 42LK450
Page 41: ......
