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WPArm/D-Detection Arm/Compression
Spring (3-659-609-00) Replacement
b. Insert the standard disk dummy (OA-120)
into the cassette-up ass'y. Check if the stand-
ard disk dummy positioning hole aligns with
the positioning pin on the chassis, and if the
clearance shown in Fig. 4-9 (c) (d) are kept
assured, and then fasten the four screws
firmly.
Em
c. Install the head load ass'y. (Refer to 4-8)
Em
d. Install the damper
in
place. (Refer to 4-7)
e. Insert the level disk into the cassette-up ·ass'y.
Check if disk positioning is properly located
while touching the forefmge.r at the position-
ing holes in the left and right of the disk.
(Refer to Fig. 4-9 (e»
Check if disk position-
ing is properly located even while placing each
side of the disk drive downwards.
f.
If
any displacement is found during position-
ing test .in item (e), repeat the operations
defined
in
4-9-2.
g. Press the eject lever and check if the level disk
can smoothly be mifted up and down.
Em
h. Install the both FC-9 Mounted Board and
shield plate in place. (Refer to 4·1)
i. Make the head clean. (Refer to 5-11)
j. Install the main cover in place. (Refer to 4-5)
k. Install blind panel
in
place. (Refer to 4-3)
1. Install the front panel ass'y in place. (Refer
to 4-2)
4-10. WP ARMlD"[)ETECTION ARMICOMPRE.S·
SION SPRING (3-65~09~0) REPLACE-
MENT
4-10-1. Removal
_
a. Remove both the FC-9 Mounted Board and
shield plate. (Refer to 4-1)
b. Remove the front panel ass'y. (Refer to 4-2)
c. Remove the main cover. (Refer to 4-5)
d. Manually set the machine into the Disk-In
mode. (Refer to Fig. 4-9 (a) )
IE
e. Remove the damper. (Refer to 4-7)
_
f. Remove the head load ass'y. (Refer to 4-8)
g. Remove the cassette-up ass'y. (Refer to 4-9)
h. Remove the E ring (E2.3), pull out both the
WP and D-Detection arms, and remove the
compression spring
(3~59~09~0)
from the
chassis ass'y. (Refer to Fig. 4-10)
~E2.3
WPArm
~E2.3
D-Detection Arm
Fig. 4·10 WP Arm/D·Detection Arm/Compression
Spring Replacement
4·10·2. Installation and Adjustment
a. Pass the compression spring (3-659-609-00)
and WP arm or the compression spring
(3~59·
609·00) and D·Detection arm through the
shaft in sequence. Then, clamp them with the
E ring (E2.3). (Refer to Fig. 4·10)
b. Pressing with the fmgers the portion indicated
by arrow on the
WP'
or D-Detection arm,
check if the WP or D-Detection arm smoothly
returns to home position by spring force.
IE
c. Install both the FC·9 Mounted Board and
shield plate in place. (Refer to 4·1)
d. Install the cassette·up ass'y in place. (Refer to
4-9)
IE
e. Install the head load ass'y in place. (Refer to
4-8)
_
f. Install the damper in place. (Refer to 4-7)
-34-
g. Make the head clean. (Refer to 5-11)
h. Install the main cover
in
place. (Refer to
4-5)
i. Install the front panel ass'y in place. (Refer
to 4-2)
4·11.
DC DISK DRIVE MOTOR (BHC·2101A)
REPLACEMENT
4·11-1. Removal
a. Connect the MFD Checker II, and then turn
off the power switch. (Refer to Fig. 2-1)
b. Remove both the FC-9/FC-14 Mounted Board
and shield plate. (Refer to 4-1)
c.
Remove the front panel ass'y. (Refer to 4-2)
d. Remove the main cover. (Refer to 4-5)
e. Manually set the machine into the Disk-In
mode. (Refer to Fig. 4-9 (a) )
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