Question about Ricoh Aficio 450 Copier
A SC540 error code dose deal with the fuser unit. You said you checked the fuser lamp & thermal fuse > have you cleaned or replaced the two thermistor's???? If one of them are shorting out, the fuser will never warm up... Have you cheated the front door and look to see if the lamps turn "ON"??? If they do, then it has to be the thermistor's..... Good Luck
Posted on Feb 29, 2012
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Posted on Jan 02, 2017
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