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(2) Tracking
(X Value) Adjustment
(See Fig. 6-4-9.)
1)Load
the alignment
tape (VHJ-0009)
and set the
PLAY
mode.
2) Set
tracking
to
the
center
position
with
the
tracking
control
key (See Note below).
3) Rotate
the
stopper
bracket
fixing
screw
180"
counterclockwise.
4) Monitor
the
video
head
output
envelope
waveform
with
the oscilloscope.
5) Adjust
the
stopper
bracket
position
so
that
amplitude
of
the
envelope
waveform
becomes
maximum
at the tracking
center and the envelope
waveform
amplitude
changes
by
the
same
amount
when
shifting
the
tracking
center
by
pressing
the
PIUS (+)
and
minus
(–)
tracking
control
keys.
6) Tighten
the fixing
screw.
7) (Model
for LP mode tape speed capability)
Playback
the alignment
tape (VHJ-0052)
and set
the tracking
to the center using a tracking
control
key.
Then confirm
that
the playback
picture on screen
is normal. If not, Make readjustment
by referring
to
items
1)
through
7). To
readjust,
playback
VHJ-0009
and finely
adjust
the
position
of the
stopper
bracket
within
the
range
in which
the
amplitude
of
the
envelope
waveform
can
be held
to a maximum.
8) Perform
servo
circuit
PB
PHASE
( Switching
position)
adjustment.
Note : For
models
equipped
with
auto
tracking,
always
set
to
the
manual
tracking
mode
before
adjustment.
To confirm
the tracking
center
position,
press the tracking
keys (+,
–) and observe the front
panel clock display.
[t
will
read
"T -:
-"
at
the
tracking
center,
"T–:
,T
-
-:"
when
keeping
the
minus
(-)
key
pressed, and
"T
: –, T
: -
-"'
when
keeping
the
Plus
( + )
key pressed. The
time
indication
will
be
restored
2
to
3
seconds
after
the
tracking
keys
are
released.
[Maximize
the
envelope
waveform
after
setting
to
center
with
the
tracking
button.)
II
~
(Slotted
screwdriver
(-) )
II
(Stopper
bracket)
(Fixing
screw)
I
I
Fig.
6-4-9
. .
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)
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r
,. .,..
–77–
,.,,
.. .
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