HP LaserJet Enterprise Printers - 51.00.xx Errors

When 51.00.xx Error To continue turn off then on is displayed on the control panel, it indicates that there is a laser/scanner assembly issue. The XX is a two digit code that provides information on the specific issue causing the error.

Turn the printer off, and then back on to clear the error.

If the issue continues, contact HP technical support to perform more complex troubleshooting steps.