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(2) Tracking (X Value) Adjustment (See Fig. 7-4-9.)
1)
Load the alignment
tape (NTSC
HiFi 400Hz) and
rX-) a 4a: a od WM
ne Tolo(- 8
2)Set
tracking
to
the
center
position
with
the
tracking control
key (See Note
below).
3)Rotate
the
stopper
bracket
fixing
screw
180°
counterclockwise.
7-91 Voy
ath co) ammmn ¢n\:
YZ (°(: 0 MN a 1-0 MN O18) 018] SME] \YZ-)
(0) 01)
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
plus
(+) 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
MH-1
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
SW
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.
—
101 —
pe
(Slotted
(Maximize the
screwdriver (-))
envelope waveform
after setting to
center with
the
tracking button.)
6S} Zoyeley:} ai ole-to1<:19)
(Drum (cylinder)
ey-L1:))
(Fixing screw)
Fig. 7-4-9.
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