LC-42/46/52D85X
6 – 10
<External input INPUT1,INPUT2> No picture on the display (5)
Does not the picture of the component video signal input to INPUT1 go out?
Does not the picture of the component video signal input to INPUT2 go out?
SUB UNIT:
<INPUT1>
Is COMPONENT1 signal sent to pins (6)/Y, (5)/Pb and (4)/Pr of
COMPONENT1 (J1705)?
NO
Check the setting of an external input device that connects of
J1705.
<INPUT2>
Is COMPONENT2 signal sent to pins (6)/Y, (5)/Pb and (4)/Pr of
COMPONENT2 (J1703)?
NO
Check the setting of an external input device that connects of
J1703.
YES
<INPUT1>
Is COMPONENT1 signal sent to pins (21)/Y, (23)/Pb and (25)/Pr
of IC506?
NO
Check the line between J1705 and IC506.
<INPUT2>
Is COMPONENT2 signal sent to pins (27)/Y, (29)/Pb and (31)/Pr
of IC506?
NO
Check the line between J1703 and IC506.
YES
<INPUT1>
Is detection signal COMP1_PLUG of the COMPONENT video
signal from pin (7) of the input terminal J1705 normal?
NO
Check from the input terminal J1705 to pin (38) of IC506.
<INPUT2>
Is detection signal COMP2_PLUG of the COMPONENT video
signal from pin (7) of the input terminal J1703 normal?
NO
Check from the input terminal J1703 to pin (40) of IC506.
YES
Is COMPONENT signal output from pin (60)/Y, (59)/Pb, and (58)/
Pr of IC506 to pin (6), (8), and (10) of connector (SC501)?
NO
Check the line between IC506 and SC501.
(Q516, Q518, Q520, etc.)
MAIN UNIT:
YES
Is COMPONENT signal output from pins (6), (8), (10) of connec-
tor (SC1101)?
NO
Check the connector. (SC501/SC1101)
YES
Is COMPONENT signal input into pins (W6), (Y9), (W8) of
IC3301 (VIDEO_PROCESSOR)?
NO
Check the line between SC1101 and IC3301.
YES
Refer to “The picture doesn't appear in all modes.”
