Service manual

Page 6-16
Section 6. Replacement Procedures
PN 9001080
Rev. A
SATO M-8485Se Standard Print Engine
Service Manual
STEP PROCEDURE
1. Switch the printer OFF and disconnect the power cable.
2. Remove screw from cabinet side to allow printer halves to swing open for
access to the inside of the printer. Fig. 6-22
3. Remove (2) mounting screws attaching the stepper motor to the frame.
Remove motor to dislodge pulley from belt. Figs. 6-23
4. Detach the cable from the cable holder. Disconnet the cable connector from
the main PCB and remove the motor. Fig. 6-24 & 6-25
5. Replace the motor with gear installed and remount to the frame. Reconnect
the cable connector to the PCB and reattach the cable to the cable holder.
6. Adjust belt tension as outlined in Section 5.6.
7. Close the printer halves and replace the locking screw.
8. Reconnect the power cable.
6.8 Replacing the Stepper Motor
REMOVE LOCKING
SCREW AND SWING
CABINET OPEN
6-22
Fig.
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.