Akai GX-2800D-SS

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SAME WIOTH (ABOUT 0.4mm)
FULL
TRACK
£.H.
4TRACK
E.H.
4. HEAD AZIMUTH ALIGNMENT
1) Playback Head
a.
b,
Connect a high sensitivity V.T.V.M. to the line
output terminals.
Depress the “7-1/2 ips” Tape Speed Selector
Switch, set Monitor Switch to TAPE, and set
Stereo Selector to “2 CH” position.
Playback an Alignment Test Tape (8,000 Hz
ampex alignment test tape recorded at 3-3/4
ips).
. At playback mode, adjust alignment adjust-
ment screw (h) shown in Fig. 16 by turning
to left and right until the line output level
of both channels is maximum.
. After the adjustments outlined in (d) above,
loosen screws (i), (i) and move the head gap
side of the playback head to left and right
until there is no fluctuation in output level
(both channels) when tension is applied to
the supply reel. Then tighten screws (i) (i’) to
maintain this position.
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PB. H. Fig. 16
2) Recording Head
a. Connect an Audio Frequency Oscillator to the
line input terminals and a high sensitivity -
V.T.V.M. to the line output terminals and
load a blank tape.
. Set the Monitor Switch to TAPE position and
record a 16,000 Hz signal at —10 dB.
. When the above adjustment has been com-
pleted, adjust the gap side of the recording
head by bending recording head installation
angle (i) shown in Fig. 16 to left.and right
until the line output level (both channels) does
not fluctuate when tension is applied to the
supply reel.
5. For optimum adjustment, repeat Items 1
and 2 above 2 or 3 times. Blank testing tape
should be new tape.
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