Sharp XV-Z2000 Service Manual page 43

Checking the S terminal input.
Input the S terminal (Y, C) signal to
INPUT 3. Select INPUT 3 with the
keys on the main body or the
remote controller.
Does the picture appear?
NO
Is the video signal inputted to the
pins (43) and (44) of IC3105?
NO
Check the input side and its
peripheral circuits.
Check the Y,C signal line.
YES
Is the picture disturbed?
1
Is the video signal outputted
YES
from pins (21), (22) and (23)
of IC3105 inputted into pins
(67), (68) and (69) of IC3102?
3
43
NO
YES
NO
YES
XV-Z2000
DT-400
End.
Check IC3105 and its
peripheral circuits.