Toshiba RD-XV48DTKB, Service Manual

Page: 34 / 124

1-11-9 E3NG1TR
FLOW CHART NO.5
Picture does not appear normally.
Set the disc on the disc tray, and playback it.
(DVD MODE)
Or, playback by selecting the picture in HDD top menu.
(HDD MODE)
Are the video signals outputted to each pin of IC1509?
Yes
Yes
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
and replace P1(AV ASSEMBLY) if defective.
Check the periphery of JK1505 from Pin (38, 39, 40) of
IC1509 and replace P1(AV ASSEMBLY) if defective.
Are the video signals outputted to the specific
output terminal?
No
No
No
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)?
Are the video signals outputted to each pin of CN1502?
Replace the P2(DVD MECHANISM & DVD/HDD 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?
Yes
No
No
CN1502 VIDEO-Y(I/P)-OUT 7PIN
CN1502 VIDEO-Y(I)-OUT 1PIN
CN1502 VIDEO-Pr/Cr-OUT 5PIN
CN1502 VIDEO-Pb/Cb-OUT 3PIN
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)-OUT 51PIN
IC1509 VIDEO-Y(I)-OUT 55PIN
IC1509 VIDEO-Pr/Cr-OUT 52PIN
IC1509 VIDEO-Pb/Cb-OUT 53PIN
IC1509 VIDEO-C-OUT 57PIN
IC1509 VIDEO-OUT 1 (AV1) 30PIN
IC1509 VIDEO-OUT 2 (AV2) 22PIN
IC1509 VIDEO-Y 40PIN
IC1509 VIDEO-Pr/Cr 39PIN
IC1509 VIDEO-Pb/Cb 38PIN
CN1502
→
IC1509 7PIN
CN1502
→
IC1509 5PIN
CN1502
→
IC1509 3PIN
→
IC1509
9PIN
51PIN
VIDEO-Y(I)-OUT CN1502
→
IC1509 1PIN 55PIN
52PIN
53PIN
57PIN
CN1502
Check the ECO+5V, ECO+9V
line and replace P1(AV
ASSEMBLY) or P3(PW/SW
ASSEMBLY) if defective.
Replace P1(AV
ASSEMBLY).
Yes No
Is 5V voltage supplied to Pin(27,29,47,63) of IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?