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Sony SVT-3000 Service Manual page 54

Time lapse video cassette recorder

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7-4-5, Tape Path Check of Exit Side Fixed Guide
(T)(See Fig. 7-4-7.)
The fixed guide (T) of the exit side does not require
adjustment
in this mechanism.
Confirm
that
the
lower
edge
portion
of the tape
is running
close
to the
lower
flange
of the exit
side fixed guide (T).
The tape should not be curled by the exit side fixed
guide (T) upper and lower flanges.
7-4-6.COMPL Head Bracket (ACE Head) Adjustment
(1) Height
Adjustment
and
Azimuth
Adjustment
(See Fig. 7-4-8.)
1)
Load the alignment tape (NTSC HiFi 400Hz) and
set the PLAY
mode.
2) Monitor
the
audio
output
waveform
with
the
oscilloscope.
3) Rotate
the azimuth
adjustment
screw
until the
audio output
waveform
amplitude
is maximum.
4) After loosening the ACE head height adjustment
special
nut,
rotate
it slowly
clockwise
until
amplitude
of
the
audio
output
waveform
is
maximum, then adjust it finely clockwise to the
point just before the said waveform
amplitude
begins to decrease.
5) Rotate
the
azimuth
adjustment
screw. until
amplitude
of
the
audio
output
waveform
is
maximum.
6) Confirm
that
the
audio
output
amplitude
does
not fluctuate.
waveform
{Normal)
(Running
along. the
oy Tammi ETavel-))
{Too low tape running
position)
(Tape
curl)
(Too high tape running
position)
(Tape curl)
Fig. 7-4-7. Fixed Guide(T)
(Special nut for ACE head
height adjustment)
'(Azimuth
adjustment
screw)
(Do not adjust as these screws
have been
fine adjusted
at the factory.)
Fig. 7-4-8. Compl Head Bracket
— 100 —

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