The code can signify that the internal print engine and the formatter (the printer's "brain") have lost communication.
A physical yellow or orange restraint clip inside the door has not been removed (common in brand-new installations). 61.c4.d3 error
If the 61.c4.d3 error persists after a power cycle, it typically indicates a mechanical failure that cannot be fixed through software. You should: The code can signify that the internal print
If you have optional or Finishers attached, disconnect them. Power the printer on with only basic hardware. 61.c4.d3 error