I I .S Stepper Motor Assembly - Panasonic JU-455-5 Service Manual

11.8 Stepper Motor Assembly Removal and
Installation (See Fig . 11 .8)
(1) Remove the insulating paper and shiel d
plate.
(2) Remove the track 00 sensor as described in
11.3.
(3) Remove the two (M2 x 4) actuator screws that
fasten the actuator to the carriage a rm
assembly.
(4) Remove the two (M3 x 6) stepper motor
assembly mount ing screws and then the
stepper ·motor.
(5) Reverse the above procedure to reinstall.
(6) After reinstallat ion, perform limiter check as
in 9.10 and radial alignment adjustment as in
9.5.
(7) Adjust the track 00 sensor according to the
instruction in 9.8.
Fii- " .8 Stepper Motor Assembly Removal
- 16 -
11 .9 Carriage Arm Assembly Removal and
Insta llatio n (See Fig.11 .9)
(1)
Remove the printed circuit board as described
in 11
. 1.
(2) Remove the insulating paper and shield plate.
(3) Remove the track 00 assembly as descr jbed in
11.3.
(4) Remove the stepper motor assembly as
described in 11 .8.
(5) Remove the two guide rod clamp mounting
screws.
(6) Remove the carriage arm assembly, guide
rod damp, a nd guide rod .
(7)
Pul lout the guide rod from the carri age arm
assembly.
(8) Reverse the above procedure to reinstall.
(9) After replacement, perform limiter
adjustment as described in 9.10, track 00
sensor adjustment as described in 9.8, a nd
ra dial al ignment adj ustment as desc ribed in
9.5.
Gu ~e R .' ~C-
_____ . __
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Fig. " .9 Carriage Arm Anembly Removal