Hitachi DVPF2E, Руководство по обслуживанию

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E1-8-5
FLOW CHART NO.9
Picture does not appear normally.
Set the disc on the disc tray and playback.
Are the video signals outputted to each pin of
main unit connector CN1601?
Replace DVD Main CBA Unit or DVD Mechanism.
Check the line between each pins of main unit
connector CN1601 and each pins of IC1402.
Is 5V voltage supplied to Pins(1, 3, 5, 34) of
IC1402?
Check the line and their periphery between Pin (4)
of IC751 and the base of Q104.
Check or replace IC1402.
Check the periphery of JK1401 from Pin (27)
of IC1402.
Check the periphery of JK1401 from Pin (33)
of IC1402.
Check the line and their periphery between
Pins(9,10,11) of IC751 and Pin(100) of IC501.
CN1601 10PIN IC1402 4PIN CVBS
CN1601 8PIN IC1402 6PIN S-Y
CN1601 12PIN IC1402 2PIN S-C
Are the video signals shown above inputted into
each pin of IC1402?
Are the video signals outputted to each pin
of IC1402?
Are the video signals outputted to the specific
output terminal?
Are the composite video signals outputted to
the VIDEO OUT terminal (JK751)?
Are the composite video signals outputted to
Pin(4) of IC751?
Check or replace IC751.
Are the composite video signals outputted to the
emitter of Q104?
Check the line and their periphery between the
emitter of Q104 and JK101.
Is the "H" pulse inputted into Pins(9,10,11) of IC751?
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
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
CN1601 10PIN CVBS
CN1601 8PIN S-Y
CN1601 12PIN S-C
IC1402 4PIN CVBS
IC1402 6PIN S-Y
IC1402 2PIN S-C
IC1402 30PIN CVBS
IC1402 27PIN S-Y
IC1402 33PIN S-C