Pioneer KRL-46V Service Manual page 47

5
Does not the picture of the Y/C video signal input to INPUT1 go out?
Does not the picture of the Y/C video signal input to INPUT2 go out?
TERMINAL UNIT:
<INPUT1>
Is Y/C video signal sent to pins (20) and (15) of SCART1
(SC502)?
<INPUT2>
Is Y/C video signal sent to pins (20) and (15) of SCART2
(SC503)?
YES
<INPUT1>
Is Y/C signal sent to pins (67), (69) of IC506?
<INPUT2>
Is Y/C signal sent to pins (73), (75) of IC506?
YES
Is Y/C signal output to pin (2), (4) of connector SC501 from pin
(52/Y), (50/C) of IC506?
MAIN UNIT: YES
Is Y/C signal sent to pins (2), (4) of connector (SC1101)?
YES
Is Y/C signal sent to pins (Y4), (V9) of IC3301
(VIDEO_PROCESSOR)?
YES
Refer to "The picture doesn't appear in all modes."
5
6
<External input INPUT1, INPUT2> No picture on the display (6)
NO
NO
NO
NO
NO
NO
NO
KRL-46V
6
7
Check the setting of an external input device that connects of
SC502.
Check the setting of an external input device that connects of
SC503.
Check the line between SC502 and IC506.
Check the line between SC503 and IC506.
Check the line between IC506 and SC501.
Check the connector (SC501/SC1101)
Check the line between SC1101 and IC3301.
7
8
A
B
C
D
E
F
47
8