LG LGXBR342 Service Manual page 52

VDR ELECTRICAL TROUBLESHOOTING GUIDE
No Component video signal when playing DISC
Component : No Y Signal
YES
R609, C613
YES
IC610 – 10
Check input
YES
C637
YES
R462
YES
IC4004-8 : HIGH
/RST_VIDEO
YES
IC4004 14,15
Check I2C Clk, Data
YES
IC4004 17,18,19 20, 29, 36
Check signal input
YES
IC4004 21~24 61~64 Check
VO_D0~VO_D7 signal
YES
RR123~RR126
Check VO_D0 ~VO_D15
Component : No Pb Signal
NO
R608, C612
NO
IC610 – 12
Check input
NO
C636
NO
R464
NO
IC2078 – 6
Check Signal
NO
R279 ~ R281
Signal and 3.3V level
NO
Check R112 CLOCK
Check IC4002 power
And Other circuits
3-62
YES
NO
YES
NO
YES
YES
YES
YES
Component : No Pr Signal
YES
R607, C611
YES
IC610 – 14
Check input
YES
C635
YES
R463
YES