Akai M-9 - ADJUSTMENT OF HEADS

0~0.025mm
A
{
! ISG
Fig. 3
f=g-0.2mm~0.3mm
Fig. 5
ADJUSTMENT OF HEADS
Azimuth alignment of the Recording/Playback
Head (See Fig. 2)
Playback an Ampex Alignment Tape 8,000 Hz
at 7-1/2" tape speed and turn the screw (A)
until the Line Output Level reaches the Max-
imum.
Angle of the Bias Head (See Fig.2 and Fig.4)
Unfasten two screws (B), (C), and move the
Bias Head by hand until the center line (d) of
the Bias Head makes an angle of 90° with the
direction of the tape. Then fasten screws (B)
and (C).
Clearance of the Bias Head (See Fig. 5|
Unfasten two screws (B), (C) and move the Bias
Head by hand until the clearance ({) and (g)
reaches 0.2 — 0.3 mm. Then fasten s:rews (B)
and (C).
Note: If the clearance (f) and (g) becomesless than
0.2 ~ 0.3 mm, the Frequency Chan cteristic
will be too low, but Distortion will dcrease.
If the clearance (f) and (g) becomes nore than
0.2 - 0.3 mm, the Frequency Characteristic will
be too high, but Distortion will increae .