LG M237WDP - Component Video Trouble Shooting

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Only for training and service purposes
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4. Component Video Trouble Shooting
Check input signal format
Is it supported?
Check signal
C1121,C122,C123
Check R164, R144, R145
C1121, C122, C123
Y
N
Check JK700
Replace JK602 or Check Divice
Y
N
Y
IC100 has problem
Y
Check Component Cable
Wave form of C121
Wave form of C122
Wave form of C123
Wave form of Comp Y
Wave form of Comp Pb
Wave form of Comp Pr
The Waveforms depend on input signal