Replacing Stepper Motor - SATO 9001226(A) Service Manual

Section 7: Replacement Procedures

7.10 REPLACING STEPPER MOTOR

The stepper drive motor transmits kinetic energy to different assemblies of the printer via the power route
assembly (timing belt and gear configuration) for precise print positioning.
Before proceeding, switch off the printer and remove the main cover, left housing cover and the top left
1.
housing cover to gain access to the internal (electrical and mechanism) hardware. Refer to Section 7.1
Removal of Housing cover for details.
Unscrew five screws to detach the Main (CONT) PCB bracket from the printer frame. Refer to Section
2.
7.6 Replacing Torque Limiter (Ribbon Unwinder) for details.
Loosen the adjustment screw of tension bracket and remove the Timing belt M386 as mentioned in step
3.
6 of Section 7.9 Replacing Timing Belt (Platen) .
On the printer frame side of the Platen roller assembly , remove the two Hex socket set screws with a
4.
Hex wrench to release the platen roller from the gear shaft. Refer to Section 7.3 Replacing Platen Roller
for details.
On the printer frame side of the Feed roller assembly , remove the two Hex socket set screws with a Hex
5.
wrench to release the feed roller from the gear shaft. Refer to Section 7.4 Replacing Feed Roller for
details.
Platen roller assembly
Remove five large pan head screws (1) securing the Power Route assembly (2) to the printer frame as
6.
shown.
Page 7-16
Platen roller
Hex socket
set screws
Feed roller
Hex socket
set screws
Feed roller assembly
2
1
TG3 Series Service Manual