HP LaserJet Pro 400 Printer M401 series - Manual (Page 104)

Recommended action
Wait for the cleaning process to finish.
Device error Press [OK]
Description
An internal error occurred.
Recommended action
Press the OK button to resume the job.
Door open
Description
The product front door is open.
Recommended action
Close the door.
Genuine HP supply installed
Description
A genuine HP supply was installed.
Recommended action
No action necessary.
Install black cartridge
Description
The toner cartridge is either not installed or not correctly installed in the product.
Recommended action
Install the toner cartridge.
Invalid driver Press [OK]
Description
You are using an incorrect print driver.
Recommended action
Select the correct print driver.
92 Chapter 5 Solve problems ENWW