Sharp DV-NC100S, Руководство по обслуживанию

Страница: 28 / 126

1-10-6
H9740TS
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?
Replace the DVD Main CBA or the DVD
Mechanism.
Check the line between each pin of CN1601 and
each pin of IC1403 and IC102 on the Main CBA,
and service it if defective.
Is 5V voltage supplied to the Pin(4) of IC1403?
Replace IC1403.
Replace IC102.
Check DVD-P-ON+5V line
and service it if defective.
Check AL+5V line
and service it if defective.
Check the periphery of JK101 from Pins (10, 11,
15) of IC102 and service it if defective.
Check the periphery of JK1401 from
Pin (5) of IC1403 and service it if defective.
Check the periphery of JK1401 from
Pin (7) of IC1403 and service it if defective.
Are the composite video signals outputted to
Pin(4) of IC751?
CN1601 1PIN
→
IC1403 3PIN S-Y
CN1601 10PIN
→
IC1403 1PIN S-C
CN1601 4PIN
→
IC102 8PIN R
CN1601 8PIN
→
IC102 6PIN G
CN1601 6PIN
→
IC102 1PIN B
Are the video signals shown above inputted into
each pin of IC1403 and IC102?
Are the video signals outputted to each pin
of IC1403 and IC102?
Are the video signals outputted to the specific
output terminal?
Are the RGB video signals outputted to the
Scart jack (JK101)?
Are the luminance signals outputted to the
S-OUT terminal (JK1401)?
Are the chroma signals outputted to the
S-OUT terminal (JK1401)?
Yes
Yes
Yes
No
No
No
Is 5V voltage supplied to the Pin(4,12) of IC102?
No
No Yes
No Yes
No
No
No
CN1601 1PIN S-Y
CN1601 10PIN S-C
CN1601 4PIN R
CN1601 8PIN G
CN1601 6PIN B
IC1403 3PIN S-Y
IC1403 1PIN S-C
IC102 8PIN R
IC102 6PIN G
IC102 1PIN B
IC1403 6PIN CVBS
IC1403 5PIN S-Y
IC1403 7PIN S-C
IC102 10PIN R
IC102 11PIN G
IC102 15PIN B
Replace IC751.
Replace IC501.
Are the composite video signals outputted to
Pin(19) of JK101 (Scart jack)?
Check the line between Pin(4) of IC751 and JK101
and service it if defective.
Are the "H" pulse inputted into Pins(9,10,11) of IC751?
No
Yes
Yes
No
No