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~adial
Track Alignment Adjustment
1.
Loosen the two Number 1 Phillips retaining screws on
_stepper motor (see Figure 5-7).
2.
Using a flat blade screwdriver between the chassis carruninlJ
bar and the stepper
moto~,
~ota
te the stepper
moto~.
3.
Observe the Cats Eye
patte~n
of the head farthest out
of alignment.
4.
Adjust until the Cats Eye
patte~ns
a~e
equal in amplitude
(Figure
5-6).
5.
Tigh te n the ste pper motor
~e
ta i n i ng screws.
6.
Recheck the RadL
1
Track ali'lnment.
#1 PHILLIPS
RETAINING
SCREWS
STEPPER
MOTOR
I
I
1(\1
,
t
I
V
~
BOTTOM OF DRIVE
u
u
fIGURE 5-7
STEPPER MOTOR RETAINING SCREWS AND CAMMING BARS
5.7
INDEX CHECKS AND ADJUSTMENT
The
index
the
start
should
be
interchange
adjustment changes the time period from the index pulse to
of
the
data
in hard sectored diskettes.
The adjustment
checked
after the drive has been aligned or when diskette
errors are suspected.
5-10
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