HP Color LaserJet 8550 Multifunction Printer series - Manual (Page 139)

138 7 Printer Control Panel Messages EN
79 SERVICE
(XXXX)
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
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.
ACCESS DENIED A user has attempted to
select a menu value while the
printer control panel locking is
enabled. See the system administrator
for access to the printer
control panel.
CALIBRATING The printer is adjusting the
density sensor. No action is required.
CANCELING JOB The printer is canceling the
current print job. No action is required.
CHECK STAPLER
DEVICE
alternates with
CLEAR JAMMED
STAPLE
A staple jam occurred. Clear the staple jam.
CLEAN DENSITY
SENSOR
CYCLE POWER The density sensor values are
out of range or inconsistent.
The density sensor might be
dirty or the transfer drum
might be damaged. 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 .
Message Description Recommended Action