Epson Stylus Photo R340 InkJet Printer "disfunctional" Questions

I have a Ricoh Aficio 700 copier. I get an error message SC496. I am lead to understand that the Toner Bottle is disfunctioning. I don't know how to correct this. Can anyone help me? empty the waste ...

how to i clear the error code E602-0002 from my canon printer irc3220 the sceen only display dis problem resulting in the disfunction of the remaining key for factory reset The hard disk is ...

...and both had the same problem which occurred after the warranty period. The USB is the only disfunctional part, but it is the one critical part necessary to use it with a computer. Word to

...works . . . not always, but generally. I believer there is something with the feed rollers that is disfunctional. It only started happening last month. Up until then the printers have worked fine. ...