Page 6-11
Section 6. Replacement Procedures
SATO CL408e/CL412e Service Manual
PN 9001078
Rev. B
6.5 Replacing the Stepper Motor
The stepper motor is used to transmit motion to the print mechanism for precise print
positioning. The stepper motor transmits torque to the label feed roller, the platen roller,
the ribbon feed roller and the ribbon rewind spindle via a series of toothed pulleys and
timing belts.
STEP PROCEDURE
1. Switch the printer OFF and disconnect the power cable.
2. Raise the access door and remove (2) screws holding the side cover to the
inside frame. Figs. 6-1
3. Remove (2) screws holding the side cover to the outside frame. Remove the
cover to expose the electronics.
4. Detach the connector from the motor to the main PCB.
5. Remove (4) mounting screws attaching the stepper motor to the motor
bracket. Disengage the belt. Figs. 6-10
6. Remove and replace the stepper motor.
7. Check belt tension and adjust as necessary per Section 5.8.
8. Replace the cover and reconnect the power cable.
Figs. 6-10
STEPPER
MOTOR
REMOVE (4)
SCREWS
DETACH CONNECTOR
