HP 3500 - Manual (Page 162)

Control panel message Description Recommended action
79.XXXX
PRINTER ERROR
alternates with
To continue
turn off then on
A critical hardware error has occurred. 1. Turn the printer off and then back
on.
2. If the problem persists, contact
HP Support.
8X.YYYY
EIO ERROR
The EIO accessory card in slot X has
encountered a critical error. For the HP Color LaserJet 3700 series
printer only.
1. Turn the printer off and then back
on.
2. If the problem persists, contact
HP Support.
150 Chapter 8 Problemsolving ENWW