HP LaserJet Pro 400 MFP M425 - Manual (Page 167)

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.
If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product
on.
If the message persists, contact HP support.
54.XX Error
Description
The product has experienced an error with one of the internal sensors.
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.
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.
55.X Error
Description
The product has experienced an internal error.
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.
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.
57 Fan Error, Turn off then on
Description
The product has experienced a problem with its internal fan.
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.
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.
ENWW Interpret control panel messages 151