ERROR CODE SC329 IN AFICIO 450

That service code SC550 normaly is a fuser web end error, you must replace the web and reset the % in 1.902 to "0". But i dont think the Ricoh aficio 450 have a fuser web. does this SC550 coming from your Aficio 450?

sc329 on the MP4500 is a laser pitch error. The most likely fix is either to have a technician initialize the laser beam pitch adjustments or examine the laser unit to make sure none of the harnesses are getting in the way of anything.

SC329: Laser beam pitch adjustment error (B)
The LD unit HP sensor does not detect an on condition while changing the LD unit position for correcting the LD position or changing the dpi.
Laser beam pitch adjustment (SP2109-3/4 wasn't performed after a NVRAM clear; SP2109-1 ~ 4 not performed after replacing the LD unit; LD unit movement blocked because of incorrect connector routing

sc 329 is the laser unit problem. the noise is not gear, it is laser noise. you have to replace the laser unit mate. thats the only solution.

change the lazer diode unit -thanks

still sc329 error

Old old copier the error is a lazer problem maybe a service call??? Sorry. -Carl

theres no e5 on aficio 450must be sc542/546 problem with heater try to reset code press yellow
button then 1 0 7 then press red button keep the red button held down 4 secounds then select
copy 1 turn copier off then switch back on

You are going to have to replace the Laser unit.. Good Luck

ca 107 c then inter the sp mode then clear error