Toshiba DVR80KF - Page 30

1-11-7 E9TK3TR
Are the video signals outputted to each pin of CN1502?
Ye s
No
FLOW CHART NO.4
VIDEO E-E does not appear normally.
Are the video signals inputted to each pin of IC1509? Check the line between video input terminal and
each pin of IC1509, and replace P1(AV ASSEMBLY),
P6(BOARD DTV MODULE UNIT) or TU1800.
Are the video signals outputted to each pin of IC1509?
Ye s
Ye s
No
No
IC1509 VIDEO-IN 1 (AV1)20PIN
IC1509 DTV-Y3PIN
IC1509 VIDEO-Y/CVBS-IN61PIN
IC1509 VIDEO-C-IN59PIN
CN1502 VIDEO-Y/CVBS-IN20PIN
CN1502 VIDEO-C-IN22PIN
VIDEO-Y/CVBS-IN
20PIN
VIDEO-C-IN
22PIN
IC1509 DTV-C5PIN
IC1509 VIDEO-IN 2 (AV2)12PIN
IC1509 TUNER-VIDEO
VIDEO-IN 1 (AV1)
DTV-Y
DTV-C
VIDEO-IN 2 (AV2)
18PIN
IC1509 → JK150420PIN
IC1509 → CN1800 26PIN3PIN
IC1509
→ CN150261PIN
IC1509
→ CN1502 59PIN
Check the line between each pin of IC1509 and
each pin of CN1502 and replace P1(AV ASSEMBLY)
if defective.
IC1509 → CN1800 28PIN5PIN
IC1509 → JK200112PIN
TUNER-VIDEOIC1509 → TU1800 17PIN18PIN
Continued to A on the next page.
Check the ECO+5V, ECO+9V
line and replace P1(AV
ASSEMBLY) or P4(PW/SW
ASSEMBLY) if defective.
Replace P1(AV
ASSEMBLY).
Ye s N o
Is 5V voltage supplied to Pin(27,29,47,63) of IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?
FLOW CHART NO.3
Replace the P2(DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY).
The [No Disc] indication.
Both picture and sound do not operate normally.
Ye s
Are the video signals outputted to each pin of CN1502?
Replace the P2(DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY).
Check the line between each pin of CN1502 and
each pin of IC1509, and replace P1(AV ASSEMBLY)
if defective.
Are the video signals shown above inputted into each
pin of IC1509?
Ye s
No
No
CN1502 VIDEO-Y(I/P)-OUT7PIN
CN1502 VIDEO-Y(I)-OUT1PIN
CN1502 VIDEO-Pr/Cr-OUT5PIN
CN1502 VIDEO-Pb/Cb-OUT3PIN
CN1502 VIDEO-C-OUT
VIDEO-Y(I/P)-OUT
VIDEO-Pr/Cr-OUT
VIDEO-Pb/Cb-OUT
VIDEO-C-OUT
9PIN
IC1509 VIDEO-Y(I/P)-OUT51PIN
IC1509 VIDEO-Y(I)-OUT55PIN
IC1509 VIDEO-Pr/Cr-OUT52PIN
IC1509 VIDEO-Pb/Cb-OUT53PIN
IC1509 VIDEO-C-OUT57PIN
CN1502 → IC15097PIN
CN1502 → IC15095PIN
CN1502 → IC15093PIN
→ IC1509
9PIN
51PIN
VIDEO-Y(I)-OUTCN1502 → IC15091PIN 55PIN
52PIN
53PIN
57PINCN1502