FOR MODELS: Ricoh Aficio MP6000, MP6001, MP6002, MP7000, MP7001, MP7502, MP8000, MP8001, MP9000, MP9001
If you have Sc550 Error code - this is Fusing Web End Roller problem.
Web End Roller requires replacement ...
Or Web End Sensor is bad.
After replacing The End Web Roller with a new one, reset SP1902 001 to "0" to release SC550.
First print an SMC report before executing Memory All Clear - SP 5801.
After executing SP 5801, make sure to re-enter the same value recorded for SP 1902-001 in your SMC