1.
REC/PB HEAD PROJECTION
ADJUSTMENT
Set the cassette head projection gauge (TF-111 CJ)
and set to
PLAY
mode. Loosen the screw (a) and
adjust so
that
the gauge indication at that time will be
3.2
± 0.05 mm. After adjustment, apply paintlock on
the screw (a).
2. TAPE GUIDE HEIGHT ADJUSTMENT
l)
Set the mirror cassette tape (TF-109CM) and set
to
PLAY
mode.
2. Adjust the tape guide
(A) so
that
the parts
of
the
erase head coming
out
of
both
sides
of
the tape
(A
and A' in Fig. 8) will be equal. For the adjust-
ment, use the adjustment
nut
(A).
3)
Adjust the tape guide (B) so
that
the tape runs
smoothly and
is
not
hitched by the tape guide.
For the adjustment, use the adjustment nut (B).
4)
After adjustment, paint-lock the adjustment nuts
(A) and (B).
3.
REC/PB HEAD HEIGHT ADJUSTMENT
l)
Set the mirror cassette tape and set
to
PLAY
mode.
2) Adjust the screws (b ), ( c) and ( d) so that the upper
edge
of
REC/PB head Leh core and the upper side
of
the tape
is
in alignment.
3)
Playback the head height adjustment tape
(4Tr
1,000 Hz) (TF-103CF), and fine-adjust the screws
(b), (c) and (d) so that the largest
output
is
obtained for
both
channels.
4. REC/PB HEAD AZIMUTH ALIGNMENT
ADJUSTMENT
I)
Playback a
10
kHz Head Azimus Alignment Tape
(TF-106CH) and adjust the screw
(d)
until the
output levels
of
both
channels are
at
maximum.
2) Record a
10
kHz,
-20VU
signal from the audio
frequency oscillator.
3)
Rewind and check for any fluctuation in the out-
put level at playback.
4)
After adjustment, paintlock the screws (b), (c) and
(d).
NOTES:
I.
Be
sure to clean the heads prior to head adjust-
ment.
2.
Be
careful not to use a magnetized driver or
other magnetized tools in the vicinity
of
the
heads.
3.
Be
sure
to
demagnetize the heads with a Head
Demagnetizer before and after head adjust-
ment.
GX-F71
4-11
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