Error message

HMS_0300_0600_0001_0002: Motor-A has a short-circuit. It may have failed.
” Motor-A has a short-circuit. It may have failed. “

What it is

when the printer is turned on each time, the motor self-check program will start and sample the current through the motor by injecting voltage. If the sample current is abnormally large, it means that the motor has a short-circuit.

The error that Motor-A has a short-circuit may be caused by the following reasons:

  1. the motor is broken
  2. the MC board is broken

Safety warning and Machine state before starting operation

Please turn off the printer and disconnect the AC cable during operation

trouble shooting guide

First please refer to this wiki to remove the rear cover of printer and check the MC board.

From the above figure, we can see the socket postions of three motors. Motor A is the same as motor B, but motor Z is different, so if  HMS reports “Motor-A/B has a short-circuit”(Assume that motor A has a short-circuit):

  1. turn off the printer and disconnect the AC cable;
  2. exchange the cable of motors A and B and turn on the printer;
  3. If the HMS still reports that motor A has a short-circuit, the MC board is broken; if the HMS changes to motor B has a short-circuit, the motor A is broken.

If HMS reports “motor Z has a short-circuit”, this is usually due to the motor is broken but there is also a small probability that the MC board is broken.

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