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
Yes
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.
All manuals and user guides at all-guides.com
No
No
Yes
No
1-11-5
Check the line between video input terminal and
each pin of IC1509.
→ JK1504
IC1509 16PIN
→ JK3001
IC1509 14PIN
→ JK3004
IC1509 7PIN
→ JK3004
IC1509 9PIN
→ JK2001
IC1509 12PIN
→ TU1501 17PIN
IC1509 20PIN
Is 5V voltage supplied to Pin(27,29,47,63) of
IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?
Yes
Check the AL+5V(2) , AL+9V
Replace IC1509.
line and service it if defective.
Check the line between each pin of IC1509 and
each pin of CN1502 and service it if defective.
→ CN1502
IC1509 61PIN 10PIN
→ CN1502
59PIN
IC1509
VIDEO-IN 1 (AV1)
VIDEO-IN (FRONT)
Y-IN 1 (FRONT)
C-IN 1 (FRONT)
VIDEO-IN 2 (AV2)
TUNER-VIDEO
No
VIDEO-Y/CVBS-IN
8PIN
VIDEO-C-IN
E3B90TR