Denon DVM-2845CI Service Manual page 24

FLOW CHART NO.21
Picture does not appear normally.
Set the disc on the disc tray, and playback.
Are the video signals outputted to each pin of
CN1601 on the AV CBA?
CN1601 1PIN S-Y(I)
CN1601 3PIN Pr/Cr
CN1601 5PIN Pb/Cb
CN1601 7PIN S-Y(I/P)
CN1601 9PIN S-C
Are the video signals shown above inputted into
each pin of IC1402 and IC1403?
IC1402 3PIN S-Y(I/P)
IC1402 6PIN Pb/Cb
IC1402 8PIN Pr/Cr
IC1403 1PIN S-C
IC1403 3PIN S-Y(I)
Are the video signals outputted to each pin
of IC1402 and IC1403?
IC1402 13PIN S-Y(I/P)
IC1402 11PIN Pb/Cb
IC1402 10PIN Pr/Cr
IC1403 5PIN S-Y(I)
IC1403 6PIN CVBS
IC1403 7PIN S-C
Are the video signals outputted to the specific
output terminal?
Are the luminance signals outputted to the
S-OUT terminal (JK1401)?
Are the chroma signals outputted to the
S-OUT terminal (JK1401)?
Are the component video signals outputted to the
VIDEO OUT terminal (JK1403)?
Are the composite video signals outputted to
the VIDEO OUT terminal (JK1403)?
Yes
Yes
Yes
No
Replace the DVD Main CBA Unit or DVD Mechanism.
Check the line between each pin of CN1601 and
each pin of IC1402 and IC1403 on the AV CBA,
No and service it if detective.
7PIN → IC1402
CN1601
5PIN → IC1402
CN1601
3PIN → IC1402 11PIN Pr/Cr
CN1601
1PIN → IC1403
CN1601
9PIN → IC1403
CN1601
No
Is 5V voltage applied to the Pin(4, 12) of IC1402
and the Pin(4) of IC1403?
Yes
Replace IC1402
or IC1403.
Check the periphery of JK1401 from
No
Pin (5) of IC1403 and service it if detective.
No Check the periphery of JK1401 from
Pin (7) of IC1403 and service it if detective.
No
Check the periphery of JK1403 from Pins (10, 11,
13) of IC1402 and service it if detective.
No
Check the periphery of JK1403 from Pin(6) of
IC1403 and service it if detective.
24
DVM-2845CI
6PIN S-Y(I/P)
9PIN Pb/Cb
3PIN S-Y(I)
1PIN S-C
No
Check P-ON+5V line and
service it if detective.