At my work, we have a kyocera mita printer fs-1900, also known as the printer that has a boat load of ink. Yesterday I basically had to disassemble the printer because of a paper jam. put it back together and it worked great. we used it all day today and it worked great, then the toner started printing light, so we put a new one in and it printed fine for about 20 sheets, so i replaced it with another one and it was working. It started cycling through like it is running, and after several several minutes it starts beeping, and flashing replace the toner cartridge so we did and it still does the same thing. Any ideas. Also where would I get a manual for this?