Sharp FDD-412A - Page 65

FDD412A/B
(d) Remove motor set screws (M4 3) and extract the motor.
Use care not to damage the fitting portions between motor
and base which are precision—finished.
(3) Assembling
(a) With care, insert the motor straight into the base.
Check the PWB guide for orientation.
(b) Secure the motor with the motor set screws.
4
(c) Close the plate, install the PWB, and mount the top cover.
(4) Adjustment
(a) After replacement, conduct checks or adjustment according to
4.3.1, "Head Position (Tracking) Adjustment".
Motor (DD spindle)
Motor set screw
Fig. 4.7 Motor (DD Spindle)
4.2.6
Head
Load
Solenoid
(1)
Tools
and
measuring
instrument
to
be
used:
#2 Phillips screwdriver
Small
standard
screwdriver
(for
wire
removal)
(2)
Disassembling
(a)
Remove
the
top
cover
and
open
the
plate
according
to
4.2.1
and
4.2.2.
(b)
Remove
the
PWB
according
to
4.2.4.
(c)
Detach
the
solenoid
wiring
from
the
J3
connector
according
€6°°45.25.3%.
:
(d)
Put
a
sheet
of
clean
paper
between
head
sliders
to
keep
the
head
from
contact.
(e)
Remove
head
load
solenoid
set
screws
(M4x
2).
While
holding
the
bail
steady
by
hand,
pull
out
the
solenoid
in
the
arrowed
direction
(Fig.
4.8).
Use
care
to
keep
the
roller
in
place.
'