LG 22LS5400/540T Service Manual page 19

5. No Video - RGB
Check input signal format
Is it supported?
Y
Check RGB Cable
Y
Check P400
Y
Check Hsync, Vsync
R4024, R4025
Y
Check signal RGB
R228,R230,R232
C204,C206,C208
Y
IC101 has problem
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Only for training and service purposes
N
Replace P400 or
Check Device
N
Replace R4024, R4025
N
Replace R228,R230,R232
C204,C206,C208
Wave f orm of R228/C204
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Wave f orm of R4025(Vsync) Wave f orm of R4024(Hsync)
Wave f orm of R230/C206 Wave f orm of R232/C208
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