Aficio CL1000N Printer: On my Ricoh aficio CL1000N it says add toner Cyan....

check your printer preference setting in computer driver you will see default set to black and white. select doc then select printer goto printer preference and select color

Toner pump bad call tech takes about 2 hours to replace one

sc 481 is the OPC belt error. check the opc belt unit. it is also called rum unit. i think the belt is worn out and needs replacing.

Toner leaks from cartridge

There is no sc922 for the CL1000N, but sc992 is a general software error. It typically shouldn't interrupt operation, but it if it does and it happens more than once, try to figure out what you were doing when it happened. Were you printing a big job? Were you printing a job with a particular font? Does it always happen at a certain time of day? Narrowing down the conditions can help to figure what is causing the error code.

possible transfer roller rotation sensor dirty or damaged transfer roller. check -- open rear door and see how the roller looks.

developer unit not set properly.
push the unit in tight

Normal 0 Disconnect the printer or at least be sure it is turned off. I'd do both and reinstall the CD software program that came with the printer. When the software program asks you to connect the printer to the USB port, do so and it should again work properly.
Hope this helps. Bud

possible toner pump

pcu