S-Video (Input 3) Check; Video (Input 4) Check - Sharp XV-Z3000 Service Manual

S-VIDEO (INPUT 3)
check
Send S-Video signal (color
signal) from INPUT 3.
Select INPUT 3 using keys
on the main unit or the
remote control.
Is image displayed
normally?
NO
Is image displayed in black
and white?
NO
Is S-VIDEO signal (Y) sent
to C3306?
YES
Is 1.8 V applied to
TL3310?
YES
Is 3.3 V applied to pin(3) of
IC3303?
YES
Is 1.5 V applied to pin(2) of
IC3301?
YES
End
YES
End
Check S-VIDEO terminal
YES
and peripheral circuits of
Q3302.
Check S-VIDEO terminal
NO
and peripheral circuits of
Q3301.
End
Check VIDEO terminal and
peripheral circuits of
Q3303.
NO
Check IC3303 and
peripheral circuits.
NO
Check Q3305 and
peripheral circuits.
NO
Check IC1705 and
peripheral circuits.
37

VIDEO (INPUT 4) check

Send VIDEO signal from
INPUT 4. Use buttons on
the main unit or the remote
control to select INPUT 4.
YES Is image displayed
normally?
NO
NO
Is VIDEO signal sent to
C3320?
YES
XV-Z3000
DT-500