Sharp XV-Z200U/E Handbuch Seite 33

Checking of Video Input
Feed the composite video signal to
INPUT 4. Select INPUT 4 using the
set's key or the remote controller.
Does the picture appear?
No
Is the picture signal inputted to the
connector TC (9) pin?
Yes
Is the picture signal inputted to the
pin (1) of IC3105?
Yes
Are the video signals inputted to
pins (39) and (41) of IC3501?
Yes
Are the video signals outputted
from pins (21), (22) and (23) of
IC3501 and inputted to pins (67),
(68) and (69) of IC3102?
Yes
Is input coming to pins (1), (3) and (5) of IC3104?
Is output coming from pins (16), (18) and (20) of IC3104?
Is the picture signal inputted to pins (43), (48) and (54) of
IC6004 and the synchronized signal inputted to pins (30)
and (31)?
Is each digital output coming on pins (64), (65), (66) and
(67) of IC6004?
Is output coming from IC8001, DPORT?
Check the formatter PWB.
Yes
Is the picture disturbed?
No
Check the TERMINAL2 PWB.
No
Check the VIDEO-IN signal
line of C3503.
Yes
Check IC3504, IC3506 and
their peripheral circuits.
Yes
Check IC3501 and its
peripheral circuits.
Yes
Yes
Yes
Yes
Yes
End.
1
No
Yes
No
Check IC3102 peripheral circuits.
No
Check IC3104 peripheral circuits.
2
No
Check around IC3104, IC6001 and IC6002.
No
Check IC6004 peripheral circuits.
No
Check IC8001 peripheral circuits.
Memo
The composite video signal is Y/C-separated by IC3506 (3 Line
COM) and the resulting signals are inputted to pins (39) and
(41) of IC3105.
The video signal is outputted from color-difference pins (21),
(22) and (23) of IC3105.
33
XV-Z200U/E, XV-Z201E
DT-300
Is synchronized signal
coming to pins (28) and
(29) of IC3102?
Yes No
Check IC3102 peripheral
circuits.
3