AMSTRAD PC1512 - Spindle Motor Assembly Exchange; 0 Track Sensor Assembly Exchange; Metal Belt Exchange

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