Checking X and Y Motor Assemblies for Conditions that Cause Motor Drifting

Using a flashlight, inspect the following Y motor assembly components, as described below.

1. Belt. Use a jig to check the belt tension. If the tension is not acceptable:
   • Adjust the Y motor belt tension, as required.
2. Motor Housing securing screws. Use a screwdriver to verify whether the screws are tightly secured. If they are not:
   • Tighten the motor housing securing screws.
3. Motor Shaft Ball Bearing. Closely inspect the motor casing around the area of the shaft (shown below - use a magnifying glass, as required). Look for:
• Damage of any kind.
• Protruding springs.
• Small, metal balls stuck on the outside of the motor.



If any of these are found:
• Replace the Y motor assembly.
4. Repeat steps 1 through 3 for the X motor assembly.