8550, 8550N, 8550DN, 8550GN, 8550MFP Printer

Message Description Recommended Action
79 SERVICE
(XXXX)
CYCLE POWER
ACCESS DENIED
CALIBRATING
CANCELING JOB
CHECK STAPLER
DEVICE
alternates with
CLEAR JAMMED
STAPLE
CLEAN DENSITY
SENSOR
CYCLE POWER
The firmware has detected an
unrecoverable error.
X Description
01XX = IO ASIC Register
Error
02XX = Video ASIC Register
Error
03XX = IDE ASIC Register
Error
A user has attempted to
select a menu value while the
printer control panel locking is
enabled.
The printer is adjusting the
density sensor.
The printer is canceling the
current print job.
A staple jam occurred.
The density sensor values are
out of range or inconsistent.
The density sensor might be
dirty or the transfer drum
might be damaged.
Turn the printer off and on to
reset the printer. If the
condition persists, contact a
local authorized HP dealer or
service representative for
service.
See the system administrator
for access to the printer
control panel.
No action is required.
No action is required.
Clear the staple jam.
Clean the density sensor.
Then turn the printer off and
on to reset the printer. If the
problem is not resolved, clean
the transfer drum. If the
condition persists, contact a
local authorized HP dealer or
service representative for
service. For information on
cleaning the printer, see
“Cleaning the Density Sensor”
and “Cleaning the Transfer
Drum” in chapter 8.
138 7 Printer Control Panel Messages EN