HP Printer Woes

I work in a warehouse where we use several laser printers (a major chain store, orders for each store need printouts for each pallet and order) and lately I have been having issues with 2 of them, an HP 4515 and an HP M603n, the 603 just seems to be a newer model of the 4515, and we seem to have the same issue between both, they will randomly throw up an error of paper size mismatch, 41.03.0x (x being tray number) no matter what tray or how much I have cleaned the sensors for paper I still get the error code, I have taken both apart made sure the paper path is clean and free of any thing that might cause an issue have preformed tests on all the sensors and paper path tests, updated the firmware on both, factory resets on both, changed what size paper the trays use, as well as adjusted the print out size, all use standard letter paper. if they were still under warranty I would call out an HP tech to look at it but alas they are not. I think the issue might be with the paper pickup, somehow being to slow or to fast or something randomly dragging and causing the printer to see different length paper then whats actually loaded.

So I turn to you fellow [H]'rs to see what you guys might have an idea on. please let me know. I'm going crazy and about to go Office Space on both, and if I do I will be sure to record it and post it here.

Are you using the Universal HP PCL5/PCL6 driver?
//Danne

Doesn't matter, the error happens when I tap thru the front panel for it to print a paper path test, it gives the error. And we have been using both the universal and the dedicated HP drivers for this printer.

diizzy said:

Are you using the Universal HP PCL5/PCL6 driver?
//Danne

Click to expand...

The client side driver won't throw a 41.xx error. That error will appear even when the printer is completely disconnected from a client pc or network.

It's probably faulty tray sensors. RM1-0041-xxx

I will check that today.

I checked the tray sensors, on both printers, both are working fine, I even took them apart and cleaned them, still having the same issues, have also tried legal sized paper just to see, getting the same issues. Tray 2 is the primary fault but the manual feed or Tray 1 also sees the same error which means its not the normal sensors, I am getting very pissed at these 2 printers, also we have a 2nd 603 starting to do the same... I am not liking this error code.