Toshiba D-R410KU, Service Manual

Page: 21 / 66

1-8-5 E7K7ATR
Are the video signals outputted to each pin of
CN1101?
Is 5V voltage supplied to the pin(1) of IC1301?
Replace P1
(AV ASSEMBLY).
Check VIDEO+5V line and replace
P1(AV ASSEMBLY) if defective.
Yes No
Yes
Yes
No
FLOW CHART NO.18
VIDEO E-E does not appear normally.
Are the video signals inputted to each pin of
IC1301? Check the line between video input terminal and
each pin of IC1301.
Are the video signals outputted to each pin of
IC1301?
Yes
No
No
IC1301 VIDEO-IN 1 (REAR) 8PIN
IC1301 Y-IN 1 (REAR) 13PIN
IC1301 VIDEO-Y/CVBS-IN 19PIN
IC1301 VIDEO-C-IN 21PIN
CN1101 VIDEO-Y/CVBS-IN 18PIN
CN1101 VIDEO-C-IN 20PIN
VIDEO-Y/CVBS-IN
18PIN
VIDEO-C-IN
20PIN
IC1301 C-IN 1 (REAR) 2PIN
IC1301 VIDEO-IN 2 (FRONT) 10PIN
IC1301 Y-IN 2 (FRONT) 15PIN
IC1301 C-IN 2 (FRONT) 4PIN
VIDEO-IN 1 (REAR)
Y-IN 1 (REAR)
C-IN 1 (REAR)
VIDEO-IN 2 (FRONT)
Y-IN 2 (FRONT)
C-IN 2 (FRONT) IC1301
→
JK2106 8PIN
IC1301
→
JK2105 13PIN
IC1301
→
CN1101 19PIN
IC1301
→
CN1101 21PIN
Check the line between each pin of IC1301 and each
pin of CN1101, and replace P1(AV ASSEMBLY)
if defective.
IC1301
→
JK2105 2PIN
IC1301
→
JK2102 10PIN
IC1301
→
JK2101 15PIN
IC1301
→
JK2101 4PIN
Continued to A on the next page.
Yes
Are the video signals outputted to each pin of
CN1101?
Replace P2(DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY).
Check the line between each pin of CN1101 and each
pin of IC1401, and replace P1(AV ASSEMBLY)
if defective.
Are the video signals shown above inputted into
each pin of IC1401?
Yes
No
No
CN1101 VIDEO-Y(I/P) 5PIN
CN1101 VIDEO-Pr/Cr 3PIN
CN1101 VIDEO-Pb/Cb 1PIN
CN1101 VIDEO-C
VIDEO-Y(I/P)
VIDEO-Pr/Cr
VIDEO-Pb/Cb
VIDEO-C
7PIN
IC1401 VIDEO-Y(I/P) 3PIN
IC1401 VIDEO-Pr/Cr 8PIN
IC1401 VIDEO-Pb/Cb 6PIN
IC1401 VIDEO-C 1PIN
CN1101
→
IC1401 5PIN
CN1101
→
IC1401 3PIN
CN1101
→
IC1401 1PIN
→
IC1401
7PIN
3PIN
8PIN
6PIN
1PIN
CN1101
Is 5V voltage applied to the Pin(4, 12) of
IC1401?
Replace P1
(AV ASSEMBLY).
Check VIDEO+5V line and replace
P1(AV ASSEMBLY) if defective.
Are the video signals outputted to each pin of
IC1401?
Yes No
Yes (VIDEO-CVBS) Yes (VIDEO-Y(I/P),Pr/Cr,Pb/Cb)
Yes
No
IC1401 VIDEO-Y(I/P) 13PIN
IC1401 VIDEO-Pr/Cr 10PIN
IC1401 VIDEO-Pb/Cb 11PIN
IC1401 VIDEO-CVBS 14PIN
IC1401 VIDEO-C 15PIN
Is the "L" pulse inputted to Pin (9, 10, 11) of
IC1022?
Replace P1
(AV ASSEMBLY).
Check the line between Pin (9, 10,
11) of IC1022 and Pin (37) of
IC1501, and replace
P1(AV ASSEMBLY) if defective.
Yes No
No
Is the video shignal outputted to Pin (15) of
IC1022?