HP LaserJet Pro 400 MFP M425 - Manual (Page 166)

Interpret control panel messages
Control panel message types
The control panel messages indicate the current product status or situations that might require action.
Alert and warning messages appear temporarily and might require you to acknowledge the message by
pressing the OK button to resume or by pressing the Cancel button to cancel the job. With certain
warnings, the job might not complete or the print quality might be affected. If the alert or warning message is
related to printing and the auto-continue feature is on, the product will attempt to resume the printing job
after the warning has appeared for 10 seconds without acknowledgement.
Critical error messages can indicate some kind of failure. Turning off and then turning on the power might fix
the problem. If a critical error persists, the product might require service.
Control panel messages
49 Error, Turn off then on
Description
The product experienced an internal error.
Recommended action
Turn the product off, wait at least 30 seconds, and then turn the product on and wait for it to initialize.
If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product
power on.
If the message persists, contact HP support.
50.x Fuser Error
Description
The product has experienced an error with the fuser.
Recommended action
Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to
initialize.
Turn off the product, wait at least 25 minutes, and then turn on the product.
If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product
power on.
If the message persists, contact HP support.
51.XX Error
Description
The product has experienced an internal hardware error.
150 Chapter 8 Solve problems ENWW