HP Laserjet 4000 Printer
Error Codes and Support
The EIO accessory in slot
X has encountered a
critical error as specified
by YYYY.
X Description:
1 = EIO slot 1 – The
printer detected an error
with the EIO card.
2 = EIO slot 2 – The
printer detected an error
with the EIO card.
6 = EIO slot 1 – The
1. Turn the printer off, and
then turn the printer on.
2. Reseat or replace the
EIO board.
3. if error persists, replace formatter
Call for Assistance 844-755-3000