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• Pulleys and belt may have collected dirt. Clean the pulleys and belt, by preference replace the
pulleys and belt. Then apply some grease on the belt.
• The main board may not process the encoder signal from the Y-motor correctly. Replace the
main board.
6.11 Vertical shift (X axis)
When the machine starts cutting on the wrong place, or when curves are not closed or of
wrong size in the length (movement direction of the media), then check the following:
• There may be tracking issues. See “Media transport issues”.
• The pulley on the X-motor and/or drive shaft may be loose. Loose the setscrew to break the
thread lock glue, then tighten the screw again.
• The encoder on the X-motor may be defective. Replace the X-motor.
• The connector of the encoder on the X-motor may have a bad contact. Replace the X-motor.
• The X-belts may be worn. They may look good, however worn belts have changed shape, and
due to this the teeth no longer grip in the grooves of the pulleys. This causes the belt to jump
over the teeth of the pulley. Replace the belts. This requires the motors to be removed.
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