HP LaserJet Pro 400 MFP M425 - Manual (Page 168)

59.X Error
Description
The product has experienced a problem with one of the motors.
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.
79 Error Turn off then on
Description
The product has experienced an internal firmware 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.
79 Service error
Description
An incompatible DIMM is installed.
Recommended action
1. Turn the product power off.
2. Install a DIMM that the product supports.
3. Turn the product on.
If the message persists, contact HP support.
Black cartridge low
Description
The toner cartridge is nearing the end of its useful life.
Recommended action
Printing can continue, but consider having a replacement toner cartridge on hand.
152 Chapter 8 Solve problems ENWW