FUNAI DRVR-B778S Service Manual page 31

FLOW CHART NO.6
Picture does not appear normally. [In the RGB/Component video output (JK1501, JK1502)]
Set the disc on the disc tray and playback.
Are the video signals outputted to each pin of
CN1502?
CN1502 7PIN VIDEO-Y(I/P)-OUT
CN1502 5PIN VIDEO-Pr/Cr-OUT
CN1502 3PIN VIDEO-Pb/Cb-OUT
Are the video signals inputted to each pin of
IC1510?
IC1510 14PIN VIDEO-Y(I/P)-OUT
IC1510 4PIN VIDEO-Pr/Cr-OUT
IC1510 15PIN VIDEO-Pb/Cb-OUT
Are the video signals outputted to each pin of
IC1510?
(Output to JK1501)
IC1510 13PIN VIDEO-Y(I/P)-OUT
IC1510 3PIN VIDEO-Pr/Cr-OUT
IC1510 1PIN VIDEO-Pb/Cb-OUT
(Output to JK1502)
IC1510 12PIN VIDEO-Y(I/P)-OUT
IC1510 5PIN VIDEO-Pr/Cr-OUT
IC1510 2PIN VIDEO-Pb/Cb-OUT
Yes (Output to
JK1501)
Are the video signal inputted to each pin of
IC1509?
IC1509 2PIN VIDEO-Y(I/P)-OUT
IC1509 12PIN VIDEO-Pr/Cr-OUT
IC1509 5PIN VIDEO-Pb/Cb-OUT
IC1509 1PIN VIDEO-G-IN
IC1509 13PIN VIDEO-R-IN
IC1509 3PIN VIDEO-B-IN
Are the video signal outputted to each pin of
IC1509?
IC1509 15PIN VIDEO-Y(I/P)-OUT/VIDEO-G-IN
IC1509 14PIN VIDEO-Pr/Cr-OUT/VIDEO-R-IN
IC1509 4PIN VIDEO-Pb/Cb-OUT/VIDEO-B-IN
Continued to "C1" on the next page.
No
Yes
Yes
Yes (Output to JK1502)
Yes
Yes
"B"
No
Replace DVD MECHANISM & DVD MAIN CBA
ASSEMBLY.
Check the line between each pin of IC1510 and
No
each pin of CN1502, and service it if defective.
IC1510 14PIN → CN1502 7PIN VIDEO-Y(I/P)-OUT
IC1510 4PIN → CN1502 5PIN VIDEO-Pr/Cr-OUT
IC1510 15PIN → CN1502 3PIN VIDEO-Pb/Cb-OUT
No
Is 5V voltage supplied to Pin(16) of IC1510?
Is -5V voltage supplied to Pin(7) of IC1510?
Yes
Replace IC1510.
Check the line between each pin of IC1509 and
each pin of IC1510, and service it if defective.
IC1509 2PIN → CN1510 12PIN VIDEO-Y(I/P)-OUT
No
IC1509 12PIN → CN1510 5PIN VIDEO-Pr/Cr-OUT
IC1509 5PIN → CN1510 2PIN VIDEO-Pb/Cb-OUT
No
Check the line between Pin(1,3,13) of IC1509 and
JK2001, and service it if defective.
No
Is 5V voltage supplied to Pin(16) of IC1509?
Is -5V voltage supplied to Pin(7) of IC1509?
Yes
Replace IC1509.
1-11-7
No
Check the DVD-P-ON+5V and
AL-5V line, and service it if
defective.
No
Check AL+5V(1) and AL-5V
line, and service it if defective.
E9G01TR