HP Color LaserJet 3500 Printer "bypassing knock sensor" Questions

"cartridge memory error" I'm using remanufactured cartridges. They seem to work fine but I get this message and don't know which cartridge is causing the problem. If I open and close the cartridge ...

13 Paper Jam - but there is no paper inside! My old printer has always worked well. All of a sudden it says there is "13 Paper Jam" when no paper has become jammed. The last page printed out fine and ...

Ricoh SP c222sf is not recognizing that there is paper in Tray 1 or bypass - tried to rest tray 1 and turn on/off, but the display still shows that there is no paper. What else can I try? There is a ...

i have a lexmark X1150 printer and didnt use it for a couple of years for printing, only for scanning. I finally bought new ink nr.26 and when i put it i couldnt print anything or switch the printer ...

...knock on something - a contacts disperse) - a sheet stops after passing of the stove - left with its place roller, taking sheet after leaving from stove because of breakage of the near fastening the ...