Hi... My name Zalee..

I have a problem with my plotter HP designjet 450C A1 paper siza...

Problem : I install a new cartridge and after that light cartridge is blinking with red color...So I was suspect the cartridge may faulty...I remove the cartridge and replace with the previous/other cartridge and same error occured...So I finalized the problem maybe the hardware (either - censor or cartridge holder)...Would anybody advice me on this matter...