Toshiba DVR19DTKB2 Service Manual page 31

Are the video signals outputted to each pin of IC1509?
IC1509 30PIN VIDEO-OUT 1 (AV1)
IC1509 22PIN VIDEO-OUT 2 (AV2)
IC1509 40PIN VIDEO-Y
IC1509 39PIN VIDEO-Pr/Cr
IC1509 38PIN VIDEO-Pb/Cb
Are the video signals outputted to the specific
output terminal?
Are the composite video signals outputted to
the VIDEO OUT (AV1) terminal (JK1504)?
Are the composite video signals outputted to
the VIDEO OUT (AV2) terminal (JK2001)?
Are the component video signals outputted to
the VIDEO OUT terminal (JK1505)?
FLOW CHART NO.5
Picture does not appear normally.
Set the disc on the disc tray, and playback it.
Are the video signals outputted to each pin of CN1502?
CN1502 7PIN VIDEO-Y(I/P)-OUT
CN1502 1PIN VIDEO-Y(I)-OUT
CN1502 5PIN VIDEO-Pr/Cr-OUT
CN1502 3PIN VIDEO-Pb/Cb-OUT
CN1502 9PIN VIDEO-C-OUT
Are the video signals shown above inputted into each
pin of IC1509?
IC1509 51PIN VIDEO-Y(I/P)-OUT
IC1509 55PIN VIDEO-Y(I)-OUT
IC1509 52PIN VIDEO-Pr/Cr-OUT
IC1509 53PIN VIDEO-Pb/Cb-OUT
IC1509 57PIN VIDEO-C-OUT
Are the video signals outputted to each pin of IC1509?
IC1509 30PIN VIDEO-OUT 1 (AV1)
IC1509 22PIN VIDEO-OUT 2 (AV2)
IC1509 40PIN VIDEO-Y
IC1509 39PIN VIDEO-Pr/Cr
IC1509 38PIN VIDEO-Pb/Cb
Continued to B on the next page.
A
Yes
Yes
Yes
Yes
No
Is 5V voltage supplied to Pin(27,29,47,63) of IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?
Yes
Replace P1(AV
ASSEMBLY).
No Check the periphery of JK1504 from Pin (30) of IC1509
and replace P1(AV ASSEMBLY) if defective.
Check the periphery of JK2001 from Pin (22) of IC1509
No
and replace P1(AV ASSEMBLY) if defective.
No Check the periphery of JK1505 from Pin (38, 39, 40) of
IC1509 and replace P1(AV ASSEMBLY) if defective.
No
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
No
defective.
→
CN1502 7PIN
→
CN1502 1PIN
→
CN1502 5PIN
→
CN1502 3PIN
→
CN1502 9PIN
No
Is 5V voltage supplied to Pin(27,29,47,63) of IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?
Yes
Replace P1(AV
ASSEMBLY).
1-11-8
No
Check the ECO+5V, ECO+9V
line and replace P1(AV
ASSEMBLY) or P4(PW/SW
ASSEMBLY) if defective.
IC1509 51PIN VIDEO-Y(I/P)-OUT
IC1509 55PIN VIDEO-Y(I)-OUT
IC1509 52PIN VIDEO-Pr/Cr-OUT
VIDEO-Pb/Cb-OUT
IC1509 53PIN
IC1509
57PIN VIDEO-C-OUT
No
Check the ECO+5V, ECO+9V
line and replace P1(AV
ASSEMBLY) or P4(PW/SW
ASSEMBLY) if defective.
E9TK3TR