DISPLAYS ERROR MESSAGE: W2 INVALID PERS. WHAT DOES THIS MEAN AND HOW DO I GET IT TO PRINT?

It sounds like you are having a problem with your LaserJet4Plus printer after upgrading to macOS Big Sur. The error message "W2 Invalid Pers" likely indicates that there is a problem with the printer's firmware or configuration.

There are a few things you can try to resolve this issue:

Restart the printer and your computer. This can often resolve problems with the printer and the operating system.

Check the printer's driver and software. Make sure they are up to date and compatible with your version of macOS. You may need to download and install updated drivers or software from the manufacturer's website.

Reset the printer's configuration. This can often resolve issues with the printer's firmware. To do this, turn off the printer and unplug it from the power outlet. Wait a few minutes, then plug it back in and turn it on.

Check for any pending updates for your printer's firmware. If there are updates available, you may need to install them to resolve the issue.

If these troubleshooting steps do not resolve the problem, it is recommended that you contact the manufacturer for further assistance. They may be able to provide additional support or recommendations for troubleshooting the issue.

Dear master. I have a lapos VeriFone VX 680. when i open there are one maggage **security alarm** tampering detected [000C10] please reboot -

Critical firmware error. Can be caused by invalid print commands, corrupt data, invalid operations or even electrical noise in the cable.

Turn off the printer, then turn it on.
Press Stop to clear the print job from memory.
Turn off and back on.
Print a document from a different software program.
If that document prints, go back to the first program that failed and print a different file.
If the error comes back, that file is corrupt.
If the message persists with different programs and print jobs have the formatter replaced.

The job needs the correct language i.e., Postscript, PCL 5 or 6 installed.
You're trying to print a job in a particular language that isn't installed on your printer. You need to load the correct driver.

You need to replace your transfer roller. Might as well do a complete maintenance kit.(Rollers, Fuser and Transfer Roller)

This printer will not work with a Mac - it has no postscript.

The only laserjet 4's that work with Macs all have an "M" in their name - 4M, 4M Plus etc.

You might be able to get a Postscript personality module for the printer to effectively upgrade it to the "M" version.

Hi,

A 50 Service error is a fuser error. Turn the printer off for 5 to 10 minutes, then turn it back on. If the error is still there, I think your going to need to make a service call you can try reseating the fuser, but be sure to let the fuser cool completely before touching it.
Good Luck the HP Laserjet 4p is a great printer.

49.XXXX PRINTER ERROR To continue turn the printer off then on Description The printing operation has been aborted. The issue can be caused by a firmware error, invalid print commands, corrupt data, invalid operations, poor quality parallel cables, poor connections or specific applications. Action

1. Press Cancel Job to clear the print job from the printer memory.
2. Turn the printer off and then on to clear the error message.
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 above action does not solve the issue, contact HP or authorized service provider.

he printing operation has been aborted.
The issue can be caused by a firmware error, invalid print commands, corrupt data, invalid operations, poor quality parallel cables, poor connections or specific applications.

Action :

1> Press Cancel Job to clear the print job from the printer memory.
2> Turn the printer off and then on to clear the error message.
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,.

Go to the printer setting's and make sure that the printer paper feed are not set into a Manual feed.

Thanks,