49.2f9d service error in hp laserjet 2420 printer...

SOURCE: support

49.XXXX
PRINTER ERROR
To continue turn off then on
A critical firmware error has occurred that
caused the processor on the formatter to
abort the operation.
This type of error can be caused by invalid
print commands, corrupt data, or invalid
operations.
In some instances, electrical noise in the
cable can corrupt data during transmission
to the printer. Other causes include poorquality
parallel cables, poor connections, or
specific software programs.
Sometimes, the formatter itself is at fault,
which is usually indicated by a 79 Service
Error.
1 Press CANCEL JOB to clear the print job
from the printer memory.
2 Turn the printer off and then on.
3 Go to www.hp.com/go/lj4200_software,
www.hp.com/go/lj4250_software,
www.hp.com/go/lj4300_software, or
www.hp.com/go/lj4350_software.
Select Download Drivers and
Software. Check for the latest firmware
image version at the bottom of the
page. If this firmware image is newer
than the one installed on the printer
and the printer can receive a firmware
update, download the newer firmware
upgrade. Not all
HP LaserJet 4200/4300 printers can
receive firmware upgrades.
4 Try printing a job from a different
software program. If the job prints, go
back to the first program and try
printing a different file.
hope this helps you
pdouglasss

SOURCE: hp 2420 error 49 3c1a

Hello,

If the printer is displaying 49.xx error message, followng the following document

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c00280149&jumpid=reg_R1002_USEN

Upgrading the firmware should resolve the issue.

Please let me know one you perform the above upgrade.

- Nikhil

SOURCE: 49.c02 service error message on HP laserjet 4100

General printer error. Unplug the power cord for 10 seconds.

SOURCE: Hp laserjet 2420 service error 49.0665

This is either a firmware error or a memory error.

Try downloading and installing new firmware from HPs website.
Instructions are on the site.

SOURCE: HP LaserJet M1522 with error 49

on hp.com you can update the firmware and that should take care of it. its a free download