Panasonic JB-3300 Technical Manual page 374

11.8 Stepper Motor Assembly Removal and
Installation (See Fig. 11.8)
(1) Remove the insulating paperand shield
plate.
Removethe track 00 sensor as described in
11.3.
Remove the two (M2 x 4) actuator screwsthat
fasten the actuatorto the carriage arm
assembly.
Remove the two (M3 x 6) stepper motor
assembly mounting screws and then the
stepper motor.
Reverse the above procedureto reinstall.
After reinstallation, perform limiter check as
in 9.10 and radial alignment adjustment as in
9.5.
Adjust the track 00 sensor according to the
instruction in 9.8.
(2)
(3)
(4)
(5)
~ (6)
(7)
Stepper
Motor Assembly Actuator
Fig. 11.8 Stepper Motor Assembly Removal
11.9 Carriage Arm Assembly Removal and
VU— 16
Installation (See Fig. 11.9)
Remove the printed circuit board as described
in 11.1.
Removethe insulating paper and shield plate.
Removethe track 00 assembly as described in
11.3.
Remove the stepper motor assembly as
described in 11.8.
Removethe two guide rod clamp mounting
Screws.
Removethe carriage arm assembly, guide
rod clamp, and guide rod.
Pull out the guide rod from the carriage arm
assembly.
(8) Reverse the above procedure to reinstall.
(9) After replacement, perform limiter
adjustmentas described in 9.10, track 00
sensor adjustmentas described in 9.8, and
radial alignment adjustmentas described in
9.5.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Guide Rod
Clamp
Carriage Arm
Assembly
Fig. 11.9 Carriage Arm Assembly Removal