Step 1: Restore factory settings>>.

Step 2: Check the tracks, belts, belt pulleys, Y-axis couplers, and other mechanical parts for any breakage or deformation.

A. If any, replace them with identical ones.

B. If there is no mechanical abnormality,

• Open the access door and check the drivers’ indicators.

Case 1: If it does not light up, see "Driver not lighting up>>" to troubleshoot.

Case 2: If the indicator of the driver does light up,

 check whether the input voltage of the driver is normal (as shown).

If the input voltage is normal (generally 24V or 36V),

1. Swap the motor plug of the axis in question with the working one. (as shown)
2. Check whether the fault axis transfers to another axis.

• If not, replace a new, identical motor.
• If so, swap all the remaining plugs on the two drivers. Check whether the faulty transfers to the initial fault axis.

          (a) If it does, the mainboard is faulty; replace it with a new, identical one.

          (b) If it doesn't, the driver needs to be replaced.