Akai GX-F25

VIL HEAD ADJUSTMENT
TAPE GUIDE B
TAPE GUIDE A
©) —caestan
PINCH ROLLER
TAPE
—-- DIRECTION
ERASE HEAD REC/PB HEAD
Fig. 9 Head Adjustment
Fig. 10 Mirror Cassette
1. TAPE GUIDE HEIGHT ADJUSTMENT
(Refer to Figs. 9, 10)
1) When using an ordinary cassette, the tape guides
and heads, etc. are not visible. As shown in Fig. 10
use a cassette tape from which part of the cassette
case has been cut out and a mirror installed for
easy visibility of the head area when making tape
guide height adjustment.
2) At playback mode, using the tape guide (A) shown
in Fig. 9 as standard for height, adjust tape guide
(B) height with tape guide height adjustment nut
so that the tape runs smoothly and does not catch
on the tape guides.
2. RECORDING/PLAY BACK HEAD HEIGHT
ADJUSTMENT (Refer to Figs. 9, 10)
1) Utilize the cassette tape used in Tape Guide Height
Adjustment above and playback the leader tape
part of cassette tape.
2) As shown in Fig. 9 adjust head height with screws
(c) (fF) and (g) until the upper edge of the tape is
the same height as the upper edge of the left chan-
nel REC/PB head core.
3) After adjustment step 2), playback the Head
Height Adjustment tape (4 track, 1,000 Hz) and
adjust Head Height Adjustment screws (c) (f) and
(g) to put the output from both channels to maxi-
mum.
3. RECORDING/PLAY BACK HEAD AZIMUTH
ALIGNMENT ADJUSTMENT (Refer to Fig. 9)
1) Playback a 10 kHz pre-recorded cassette azimuth
alignment test tape and adjust screw (g) shown in
Fig. 9 to obtain maximum output on both chan-
nels.
2) Invert cassette and confirm that the out put level
does not change from that obtained in Item 3-1)
above. If the output level differs, adjust in the
same way as in Item 3-1) above until both sides of
the test tape display equal output.
3) After adjustment, better to check again head
height and azimuth alignment.
NOTES: 1. Be sure to clean the heads prior to head
adjustment.
2. Be careful not to use a magnetized driver
or other magnetized tools in thevicinity of
the heads.
3. Be sure to demagnetize the hads with a
Head Demagnetizer before anda fter head
adjustment.
4. When a mirror installed cassette te st tape as
shown in Fig. 10 is required, itcan be or-
dered from AKAI Electric Co.