Sharp DV-NC100X Service Manual page 28

FLOW CHART NO.7
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 Main CBA?
CN1601 8PIN S-Y
CN1601 10PIN S-C
CN1601 6PIN Cb
CN1601 4PIN Cr
Are the video signals shown above inputted into
each pin of IC1402?
IC1402 3PIN S-Y
IC1402 1PIN S-C
IC1402 6PIN Cb
IC1402 8PIN Cr
Are the video signals outputted to each pin
of IC1402?
IC1402 14PIN CVBS
IC1402 13PIN S-Y
IC1402 15PIN S-C
IC1402 11PIN Cb
IC1402 10PIN Cr
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 (JK751)?
Are the composite video signals outputted to
Pin(4) of IC751?
Are the "H" pulse inputted into Pins(9,10,11) of IC751?
Replace IC501.
Yes
Yes
Yes
No
No
No
No
Replace the DVD Main CBA or the DVD
Mecha.
Check the line between each pin of CN1601 and
each pin of IC1402 on the Main CBA, and
service it if defective.
No
8PIN → IC1402
CN1601
CN1601 10PIN → IC1402
6PIN → IC1402
CN1601
4PIN → IC1402
CN1601
Check DVD-P-ON+5V line and service it if defective.
No
Is 5V voltage applied to the Pin(4, 12) of
IC1402?
Replace IC1402?
Check the periphery of JK1401 from
No
Pin (13) of IC1402 and service it if defective.
Check the periphery of JK1401 from
No
Pin (15) of IC1402 and service it if defective.
Check the periphery of JK1403 from Pins (10, 11,
No
13) of IC1402 and service it if defective.
No
Yes
Check the line between Pin(4) of IC751 and JK751
and service it if defective.
Yes
Replace IC751.
1-10-6
3PIN S-Y
1PIN S-C
6PIN Cb
8PIN Cr
No
Yes
H9745TS