Toshiba DVR19DTKB2, Service Manual

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1-11-7 E9TK3TR
Are the video signals outputted to each pin of CN1502?
Yes
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?
Yes
Yes
No
No
IC1509 VIDEO-IN 1 (AV1) 20PIN
IC1509 DTV-Y 3PIN
IC1509 VIDEO-Y/CVBS-IN 61PIN
IC1509 VIDEO-C-IN 59PIN
CN1502 VIDEO-Y/CVBS-IN 20PIN
CN1502 VIDEO-C-IN 22PIN
VIDEO-Y/CVBS-IN 20PIN
VIDEO-C-IN 22PIN
IC1509 DTV-C 5PIN
IC1509 VIDEO-IN 2 (AV2) 12PIN
IC1509 TUNER-VIDEO
VIDEO-IN 1 (AV1)
DTV-Y
DTV-C
VIDEO-IN 2 (AV2)
18PIN
IC1509
→
JK1504 20PIN
IC1509
→
CN1800 26PIN 3PIN
IC1509
→
CN1502 61PIN
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 28PIN 5PIN
IC1509
→
JK2001 12PIN
TUNER-VIDEO IC1509
→
TU1800 17PIN 18PIN
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).
Yes No
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.
Yes
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?
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
CN1502
→
IC1509 7PIN
CN1502
→
IC1509 5PIN
CN1502
→
IC1509 3PIN
→
IC1509
9PIN
51PIN
VIDEO-Y(I)-OUT CN1502
→
IC1509 1PIN 55PIN
52PIN
53PIN
57PIN
CN1502