Please take out the carton and consumables and check whether there is paper jam or foreign matter inside the printer.
Restart the printer to confirm that the printer can return to the ready state.
If the printer is not ready, repair is recommended.
If the printer is ready, clean the paper take-up wheel of carton 1 and retest printing with normal A4 paper.
If the printer still has a paper jam problem, repair is recommended.
Sorry for the inconvenience.