Sharp VC-780E - Page 29

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4,
Set
the
tracking
button
to
the
center
position.
5.
Observing
the
monitor
screen,
adjust
the
PAL
2.
LP
slow
tracking
preset
control
(R855)
until
the
noise
bar
disappears
form
the
screen.
3.
6.
Press
the
playback
button
to
play
back
the
tape.
Then
push
the
pause/still
button
to
reproduce
the
recording
in
the
still
mode.
Now
make
sure
there
is
no
noise
on
the
screen.
(Repeat
this
step
three
times
or
so.}
Adjustment of NTSC System EP Slow tracking
Measuring Monitor TV
instrument
Recording and playback on
self-recording tape.
Input signal Video signal
{external input selector switch)
Adjusting point R857 (NTSC EP slow tracking
control)
Test point
Specification No noise bar on the monitor TV
screen
1. Feed the video signal to the video input terminal
(with the external input selector switch).
2. Make recording and playback on the self-recording
tape.
3. Press the slow button and play back the recorded
portion in the slow mode.
4. Set the tracking button to the center position.
5.
Observing
the
monitor
screen,
adjust
the
NTSC
EP
slow
tracking
preset
control
(R857)
until
the
noise
bar
disappears
form
the
screen.
6.
Press
the
playback
button
to
play
back
the
tape.
Then
push
the
pause/still
button
to
reproduce
the
recording
in
the
still
mode.
Now
make
sure
there
is
no
noise
on
the
screen.
(Repeat
this
step
three
times
or
so.)
Adjustment of still picture vertical syne (Performance check)
Measuring Monitor TV
instrument
Still picture playback
Tape used Self-recording tape
Test point Monitor screen
Adjusting point R8110 (V-Lock control)
Specification No vertical jitter
29
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_
Play
back
the
tape
self-recorded
in
the
LP
mode.
Press
the
pause/stil!
button
to
reproduce
the
recording
in
the
still
mode.
Observing the monitor screen, adjust the still picture
V-Lock control (R8110) until the vertical jitter disappears
from the screen.
Note;
V-Lock
control
(R8110}
islocatedin
the
operation
PWB.