I'd exprience the same problem once. what i did was to change polygon size laser. its working perfectly now
Laser motor trouble
Error cde 320 ricoh 250
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You did not specify what machine you have, but I beleive it is a Ricoh. take a look at this link:
http://www.tecnodigitale.com/riparazioni/pdf/Codici_errore_Ricoh.pdf
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Yes, I have same problem with code SC320 "functional problem" on the display. Also I already follow the instruction to" turn off main power switch and then turn it on" but the problem still occur. By the way our photocopier is Ricoh Aficio 1018 and there is no troubleshooting instruction for this problem on the manual.
Thanks
Sarah Lung
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