It is a bad or print job the 1st time if it keeps popping the code then
you need to flash the firmware which is easy. use a usb hook it to a laptop undo the network so no can send a job to it set up laptop to
print to it, so go to hp.com load driver then print then on the same page from hp download firmware and the installer read the how to then flash it,let it run its cycle it will turn on and off 1 or 2 times then it will come up to ready. if it keeps popping the code then check your cat 5 cables make sure they r in good shape if so, then ur looking at a
bad formatter board, $200 up is the price. go to ebay or look for on google a company that buys and sell used ones un plug remove to
screws install formatter turn on and in the printer put your ip gateway
and sub and ur good to go. but 75% of the time its firmware
SOURCE: LaserJet 2420dn Error
The error means -
A critical firmware error has
occurred.
Recommended action
1. After performing the actions
listed in the preceding item, if
the message persists when
using different software
programs and attempting
specific print jobs, disconnect
all cables that connect the
printer to the network or a
computer.
2. Turn the printer off.
3. Remove all memory DIMMs
or third-party DIMMs from the
printer. (Do not remove the
firmware DIMM in slot J1.)
4. Remove all of the
EIO devices from the printer.
5. Turn the printer on.
6. If the error message
disappears, reinstall
each DIMM and EIO device
individually, making sure to
turn the printer off and then
on again as you install each
device. To replace a DIMM,
see.
7. Replace the DIMM or
EIO device that caused the
error message.
8. Remember to reconnect all of
the cables that connect the
printer to the network or
computer.
9. If this error message persists,
replace the firmware DIMM.
10. Replace the formatter
SOURCE: 49.4c02 service error
This is a firmware error, you can try turning the printer on and off a few times, reseating any memory and the formatter board. If these steps don't work
Go to http: www.hp.com/
support/lj2410, www.hp.com/
support/lj2420, or
www.hp.com/support/lj2430.
Click 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 printer
models can receive firmware
upgrades.
If still no joy replace the formatter (this is the normal coarse of action)
SOURCE: hp laserjet 4650n
Hi 123sha:
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 operation. This type
of error can be caused by
invalid print commands,
corrupt data, or invalid
operations. In some cases,
electrical noise in the cable
can corrupt data during
transmission to the printer.
Other causes include poorquality
parallel cables, poorconnections,
or home-grown
programs. On rare
occasions, the formatter 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 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. If
the message appears
only with a certain
software program or
print job, contact the
software vendor for
assistance.
4 If the message persists
with different software
programs and print jobs,
disconnect all of the
cables to the printer that
connect it to the network
or computer.
5 Turn the printer off.
6 Remove all memory
DIMMs or third-party
DIMMs from the printer.
7 Remove all EIO devices
from the printer.
8 Turn the printer on.
9 If the error no longer
exists, install each
DIMM and EIO device
one at a time, making
sure to turn the printer
off and on again as you
install each device.
10 Replace a DIMM or EIO
device if you determine
that it causes the error.
Try new network card
pdouglasss
SOURCE: My HP Laserjet 2420dn will not print and is
This could be a firmware fault on the main formatter board inside the printer
1. Press CANCEL JOB to clear the
print job from the printer
memory.
2. Turn the printer off, and then
turn the printer on again.
3. Go to http: www.hp.com/
support/lj2410, www.hp.com/
support/lj2420, or
www.hp.com/support/lj2430.
Click 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 printer
models can receive firmware update
SOURCE: HP Laserjet 2420dn will not print and is
Does the error display when printing a particular job, or anything that you print? If you have extra memory installed, remove it. Power up and try again. If it won't clear replace the formatter
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