The is a common yet frustrating issue for users of this legacy laser multi-function printer. This error typically occurs when the printer's internal controller receives data it cannot interpret, often resulting in the printer spitting out a single sheet of paper with this error message printed at the top.
: Check for stuck jobs by going to Settings > Devices > Printers & Scanners , selecting the Samsung SCX-4623F, and clicking Open queue . Cancel all pending documents. selecting the Samsung SCX-4623F