laserjet 4600 49.xxxx service error

[Cwest]

Hi everyone.
I currently have a laserjet 4600 that has just recently started showing up with the 49.xxxx service error codes. I had removed the network card (jetdirect 615n) and booted it up, and the error did not occur. I placed it back in, and after boot up, it came directly back with the error code. I replaced the network card to a jetdirect 620n, and was able to print out the config page as well as supply status page. Once the print queue started printing up, it got through one page before coming back up with the 49 service error. Any suggestions?

[redcow]

Is it always the same job that gets the error?(item 3 below)

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 poor quality
parallel cables, poor connections, or
home-grown applications. 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 back
on.
3 Try printing a job from a different
software application. If the job
prints, go back to the first
application and try printing a
different file. If the message
appears only with a certain
software application or print job,
contact the software vendor for
assistance.
4 If the message persists with
different software applications
and print jobs, disconnect all
cables to the printer that connect
it to the network or PC.
5 Turn the printer off.
6 Remove all memory DIMMs or
third-party DIMMs from the
printer. (Do not remove the
firmware DIMM in slot J1.)
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 back on as you
install each device.
10 Replace a DIMM or EIO device if
you determine that it causes the
error.
11 Remember to reconnect all
cables that connect the printer to
the network or computer.
12 If the error persists, replace the
firmware DIMM.
13 Replace the formatter and
calibrate the printer. See
“Calibrate Now” on page 294.
Table 7-3 Numerical printer messages (continued)