2-4
2. MAJOR UNIT REPLACEMENT
EM18-33011
(Revision Date: Apr. 05 '94)
2.1 Replacing the Stepping Motor
2.2 Replacing the Stepping Motor
1) Remove the two black screws to detach the front plate, remove the two FL-4x6 screws to detach the
belt cover.
Fig. 2-6
2) Unclamp and disconnect the connector from CN13 on the CPU PC board.
3) Remove the two SM-4x10C screws, loosen the two belts from the pinion gear, and remove the
stepping motor.
4) When replacing the stepping motor, place the platen belt first then the feed roller belt around the pinion
gear so that the partition is positioned between two belts. Hold down the stepping motor at 3.5 kg
±
300 g force and secure it so that the belts have no slack or disengagement.
5) Reassemble in the reverse order of removal.
Fig. 2-7
Belt Cover
Screw (FL-4x6)
Black Screw
Front Plate
Screw (SM-4x10C)
Feed Roller Belt
Partition
Platen Belt
Clamp
CPU PC Board
CN13
Pinion Gear
Stepping Motor
PS Unit