Emergency stop error caused by cover opening (error code: 030004)

Cause

Occurs if the rear cover is opened during motor driving.
(Although the fatal error occurrence history is recorded to the main unit, the main unit display indicates a paper jam error)

Suspected cause
  • Rear cover opened during motor driving
  • Rear cover open sensor failure
Troubleshooting
Step Confirmation and action Yes No
1

Turn the power off and then back on
Did the corresponding error occur after the power was turned off and then back on?
Does an open error occur while the rear cover is in the closed state?

Replace the rear cover open sensor

End