Hewlett-Packard All-in-one Machine Error No paper pickup what should I do?

HP All-in-one machine How to solve the error No paper pickup

1. Check whether there is paper in the tray, if not please put the paper in the tray, and then press the "OK" button on the printer panel to check whether the printing is normal. If the machine does not respond, press the picture to remove the toner cartridge. (lj3050 as an example)

2, check whether there is paper jam in the machine, if there is paper jam, please gently remove the paper jam, into the toner cartridge, waiting for the machine to see whether it can enter the ready state, if the failure is still, please contact the local repair center.