630D
(6)
Inspect all wiring extended through casting to upper deck area
for
crushed or
abraded wires.
(7)
Install the belt guard.
(8)
Reconnect all cables disconnected in Steps
(4)
through
(6)
of
Paragraph 6.27.1.
(9)
On
200
tpi models, remount the Temperature Compensation PCBA and retaining
hardware.
(10)
Lower the Logie and Servo PCBAs into operating position.
(11)
Inspect the interior of the disk drive for any items or parts that could interrupt
operation.
(12)
Return the disk drive
to
normal operating condition.
6.28 DRIVE MOTOR
6.28.1
DRIVE MOTOR REMOVAL
Refer to Figure
6·46
(1)
Pull the disk drive forward to the full extent
of
the slides; remove the dust cover
as
described
in
Paragraph
2.2.
(2)
Raise the Servo and Logic PCBA units to the maintenance position.
(3)
Remove the cover from the Motor Control PCBA.
(4)
Carefully remove cable ties from the cable bundle terminating at connectors
on
the Motor Control PCBA
and
to the point where wiring to the drive motor breaks
out of the cable bundle.
CAUTION
DO
NOT
CUT OR NICK
ANY
WIRES IN THE
CABLE
BUNDLE.
(5)
Disconnect connectors
P405
and
P406
from the Motor Control PCBA
and
separate
out the cable to the drive motor.
(6)
Remove the belt guard; remove belt from motor pulley only (refer to Paragraph
6.19.1).
(7)
Remove the motor pulley from the motor shaft.
(8)
Use
a thin·shank Phillips head screwdriver to remove
four
motor mounting screws
from the motor mounting plate. Refer to Figure
6·47.
(9)
Remove the drive motor from the mounting plate and from the disk drive.
6.28.2
DRIVE
MOTOR
INSTALLATION
From the top side of the disk drive, proceed
as
follows. Refer to Figure
6·46.
(1)
Position the motor so the motor cable exists from the motor frame
as
shown in
Figure
6·46.
(2)
From beneath the disK drive, install four motor mounting screws through the
motor mounting plate.
See Figure
6·47.
Secure motor
to
plate.
(3)
Install the drive motor pulley
on
the motor shaft.
(4)
Replace belt
as
noted
in
Paragraph 6.19.2.
(5)
From the top side
of
the disk drive, route the motor cable as shown in Figure
6·46.
Install connectors
P405
and
P406
to the Motor Control PCBA.
6-92
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