The X/Y Axis motor is responsible for the movement of the extruder so if the extruder does not move at all along the guide rails, or it moves with difficulties making unusual noises and you notice shifted layers on your model, check if the short and long belts are tense and the screws on motor pulleys are tightened. See the manual – here. If axes maintenance does not help, the axis motor needs to be replaced.

The following manual shows the M200 repair work. For the M300, these procedures are the same.
1

Unplugging the Power Cable

Turn off the printer and unplug the power cable.

2

Unplugging the Motor Cable

Unplug the motor cable.

3

Unscrewing the Axis Motor

Unscrew the four screws that secure the motor.

4

Axis Motor Removal

Remove the distance piece and remove the motor.

5

Axis Motor Assembly, part 1

Put the belt on the new motor pulley and install the motor distance piece.

6

Axis Motor Assembly, part 2

Insert the four screws into the holes in the housing and tighten them slightly.

7

Securing the Axis Motor

Press down the motor by hand to tense up the belt. Tighten the screws while the motor is still being pressed down.

8

Plugging the Motor Cable

Plug the motor cable in.

9

Plugging the Power Cable

Plug the power cable in.

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