My HP color laser jet 4700n printer is giving me error 49

This is what HP says about error 49:

Control Panel Message:
49.XX.XX
PRINTER ERROR
To continue
turn off then on

Description:
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
programs. On rare occasions, the formatter
is at fault, which is usually indicated by a 79 Service Error.

Recommended Action:
1. Turn the printer off then on.
2. Press Stop to clear the print job from
the printer memory.
3. Turn the printer off then on.
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. If the message
displays only with a certain software
program or print job, contact the
software vendor for assistance.
5. 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.
6. Turn the printer off.
7. Remove all memory DIMMs or thirdparty
DIMMs from the printer. (Do not
remove the firmware DIMM.)
8. Remove all EIO devices from the
printer.
9. Turn the printer on.
10. 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.
11. Replace a DIMM or EIO device if you
determine that it causes the error.
12. Remember to reconnect all of the
cables that connect the printer to the
network or computer.
13. If the error persists, upgrade the
firmware compact flash card.
14. Replace the formatter and calibrate
the printer.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe


I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309