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c)
Secure
the
PCB
post using screws.
d)
Mount
the stepping
motor assembly
as described
in
4-6-2.
e)
Mount
the
lever
frame assembly as
described
in
4-5-2.
f)
Mount
the
eject
assembly
as described
in
4-4-2.
g)
Mount
the
front plate
as described
in
4-3-2.
h)
Mount
the
lever
as described
in
4-2-2.
i)
Place the
printed
circuit
board as described
in
4-1-2.
j)Adjustthe
radial
track(5-2)
and
index
burst
time
(5-5),
and
checktheO
track sensor(5-3),
azimuth
(5-4),
level
(5-6),
resolution
(5-7)
and symmetry
(5-8)
after
mounting.
4-8
Spindle
Motor Assembly
Exchange
(See
Figure
4-8)
4-8-1
Spindle
Motor Assembly
Removal
a)
Remove
the printed
circuit
board as described
in
4-1-1.
b)
Remove
the
lever
as described
in
4-2-1.
c)
Remove
the
front plate
as described
in
4-3-1.
d)
Remove
the
eject
assembly
as described
in
4-4-1.
e)
Remove
the
lever
frame
assembly
as described
in
4-5-1
f)
Unfasten
the
four spindle
motor
fixing
screws
(three
screws on
top
and one screw on
the bottom).
g)
Remove
the spindle
motor
in
a
downward
direction.
Be
careful not to
damage
the top surfaces
of
the
spindle.
4-8-2
Spindle
Motor Assembly Mounting Adjustment
a)
Secure
the spindle
motor
with
four screws. Align the
W/P LED
approximately the
centre
of
the
housing
hole.
b)
Mount
the
lever
frame assembly
as described
in
4-5-2.
^
c)
Mount
the
eject
assembly
as described
in
4-4-2.
d)
Mount
the
front plate
as described
in
4-3-2.
e)
Mount
the
lever
as described
in
4-2-2.
f)
Place the
printed
circuit
board as described
in
4-1-2.
g)
Adjust the spindle
speed
(5-1
),
radial
track
(5-2),
track
sensor
(5-3)
and
index burst time
(5-5)
and check
the
azimuth
(5-4),
level
(5-6),
resolution
(5-7),
symmetry
(5-8)
and
write protect
sensor
(5-
9)
after
mounting.
4-9
Track
Sensor Assembly Exchange
(See
Figure
4-9)
4-9-1
Track
Sensor Assembly Removal
a)
Remove
the printed
circuit
board as described
in
4-1-1.
b)
Unfasten
the
track
sensor assembly
fix
screw.
c)
Remove
the
track
sensor assembly.
4-9-2
Track Sensor
Assembly Mounting and
Adjustment.
a)
Mount
the
track
sensor assembly
with
screws.
Temporary
tightening
of
screws
is
required.
b)
Place the
printed
circuit
board as described
in
4-1-2.
c)
Adjust the
track
sensor
after
mounting.
(Refer
to
5-3).
4-10 Metal
Belt
Exchange
(See
Figure 4-10)
^
4101
Metal
Removal
a)
Remove
the printed
circuit
board as described
in
4-1-1.
b)
Remove
the
lever
as described
in
4-2-1.
c)
Remove
the
front plate
as described
in
4-3-1.
d)
Remove
the
eject
assembly
as described
in
4-4-1.
e)
Remove
the
lever
frame assembly as described
in
4-5-1.
f)
Remove
the stepping
motor assembly
as described
in
4-6-1.
g)
Remove
the
head assembly
as described
in
4-7-1.
h)
Unfasten
the metal
belt
fix
screws and remove
the metal
belt
from the
head
assembly.
4102
Metal
Belt
Mounting and Adjustment
a)
Mount
the metal
belt
on
the
head assembly
using screws.
(Be
careful
of
the metal
belt direction).
b)
Mount
the
head assembly
as described
in
4-7-2.
c)
Mount
the stepping
motor assembly
as described
in
4-6-2.
d)
Mount
the
lever
frame assembly as
described
in
4-5-2
e)
Mount
the
eject
assembly
as described
in
4-4-2.
f)
Mount
the
front plate
as described
in
4-3-2.
g)
Mount
the
lever
as described
in
4-2-2.
h)
Mount
the
printed
circuit
board as described
in
4-1-2.
i)
Adjust the
radial
track
(refer
to
5-2),
index
burst
time
(5-5),
and
track
sensor
(5-3)
after
mounting.
10
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