Sharp DT300 - DLP Projector - 700 ANSI Lumens, Service Manual

Page: 33 / 140

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