Receiving printer error code 5020..wht does it mean and how is it corrected?

Actualy my copier is xerox work centre 5020. My problem is machine is indicate u2 error

i have one xerox 5020 machine, there is display showing C1 error code in first tray and C3 error code in bypass tray .if open and close the machine will be idle and ready to cpoy. there is no paper pick up in both trays. please help to resolve the problem.

I have just read it on the other forum..try this one
Error Code 5020:
Scanner lock switch locked. [5020] Release the scanner lock switch and turn the power
off and back on.
Turn the machine off, unlock the scanner lock
switch, then turn the machine on again.

Hope it helps.

All problems associated with this copier can be found in its user manual. The link below is the user manual for the model associated with this question. A simple search in the manual of the error code should result in the answer to your question.
http://www.retrevo.com/support/Canon-5020-Copiers-manual/id/23385dj783/t/2/

CODE EROR IR 5020

hold the power button for 15 sec. for a system reset. Try to remove each panel that opens and check for broken pieces of paper Recycle the system by reinstalling the software once again. If you getting error codes then follow this We need to clear out these error codes stored in your printer NVRAM or memory! Shut down the printer and pc associated with it. Remove data cable and reinstall the software for this printer, press and hold the power button on the printer for 15 seconds, then reconnect the printer after software installation is successful. This process will clear the error codes that you keep receiving

you reset your eror code program c#0#

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turn on the copier and quickly press * (with the little head around it) then 2 and 8 at the same time, then the * again... this should put you in service mode. now press copier >funtcion>clear>err>ok. now turn the copier off and back on, If the code comes back call your service local service tech.

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