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4-9
Stepping
Motor Assembly Exchange (See
Fig.
4-9)
4-9-1
Stepping
Motor Assembly Removal
a)
Remove
the
lever
as described
in
4-3-1.
b)
Remove
the bezel as described
in
4-4-1.
c)
Remove
the
LED
assembly
as described
in
4-5-1.
d)
Remove
the ejector
assembly
as described
in
4-6-1.
e)
Remove
the
lever
frame assembly as described
in
4-7-1.
f)
Remove
the
head assembly
as described
in
4-8-1.
g)
Disconnect
the
connector
(stepping
motor).
h)
Unfasten two stepping motor
fixing
screws.
i)
Remove
the stepping
motor
assembly.
Be
careful not
to
touch
the
screw
shaft
of
the stepping
motor.
4-9-2
Stepping Motor
Assembly Mounting and
Adjustment
a)
Install
the
stepping
motor assembly
in
the
chassis,
and
fix
with
two
screws.
b)
Reconnect
the
disconnected connector
(stepping
motor).
c)
Mount
the
head assembly
as described
in
4-8-2.
d)
Mount
the
lever
frame
assembly
as described
in
4-7-2.
e)
Mount
the ejector
assembly
as described
in
4-6-2.
f)
Mount
the
LED
assembly
as described
in
4-5-2.
g)
Mount
the bezel
as described
in
4-4-2.
h)
Mount
the
lever
as described
in
4-3-2.
i)
Adjust the
radial
track
alignment
(5-2),
index
burst
time
(5-5),
trackOO
sensor
timing
(5-3),
head
azimuth
(5-4),
resolution
(5-7)
and symmetry
(5-8)
after
mounting.
*
«tk
Fig
£-9 Stepping Motor Assy Exchange
4-1
DC
Motor Assembly
Exchange
(See
Fig.
4-1
0)
4-10-1
DC
Motor Assembly Removal
a)
Remove
the
drive
belt
as described
in
4-1-1
a)
b)
Disconnect the connector
(DC
Motor)
c)
Unfasten
two
DC
motor assembly
fixing
screws.
d)
Remove
the
DC
motor
assembly.
4-10-2
DC
Motor Assembly Mounting and Adjustment
a)
Secure
the
DC
Motor assembly
with
two
screws.
b)
Reconnect
the
disconnected connector
(DC
Motor).
c)
Replace
the
drive belt
as described
in
4-1-2
d), e).
d)
Adjust the spindle
speed
(5-1)
after
mounting.
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