Toshiba RD-XV47KE Service Manual page 28

FLOW CHART NO.4
VIDEO E-E does not appear normally.
Are the video signals inputted to each pin of
IC1509?
IC1509 16PIN VIDEO-IN 1 (AV1)
IC1509 14PIN VIDEO-IN (FRONT)
IC1509 7PIN Y-IN 1 (FRONT)
IC1509 9PIN C-IN 1 (FRONT)
IC1509 12PIN VIDEO-IN 2 (AV2)
IC1509 20PIN TUNER-VIDEO
Are the video signals outputted to each pin of
IC1509?
IC1509 61PIN VIDEO-Y/CVBS-IN
IC1509 59PIN VIDEO-C-IN
Are the video signals outputted to each pin of
CN1502?
CN1502 10PIN VIDEO-Y/CVBS-IN
CN1502 8PIN VIDEO-C-IN
Continued to A on the next page.
Yes
Yes
No
Check the line between video input terminal and
each pin of IC1509.
IC1509 16PIN
IC1509 14PIN
IC1509 7PIN
IC1509 9PIN
IC1509 12PIN
IC1509 20PIN
No
Is 5V voltage supplied to Pin(27,29,47,63) of
IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?
Yes
Replace IC1509.
No
Check the line between each pin of IC1509 and
each pin of CN1502 and service it if defective.
→ CN1502
61PIN
IC1509
→ CN1502
IC1509 59PIN
1-11-5
→ JK1504
VIDEO-IN 1 (AV1)
→ JK3001
VIDEO-IN (FRONT)
→ JK3004
Y-IN 1 (FRONT)
→ JK3004
C-IN 1 (FRONT)
→ JK2001
VIDEO-IN 2 (AV2)
→ TU1501 17PIN
TUNER-VIDEO
No
Check the AL+5V(2) , AL+9V
line and service it if defective.
10PIN
VIDEO-Y/CVBS-IN
8PIN VIDEO-C-IN
E3B90TR