Ricoh mp7500 strange problem, broken polygon motor ever 100k copies

[copier tech]

Never heard of initialisation for polygon motor, are you sure you are thinking of correct brand/model.

Maybe Phil B should read the manual ..........

[m_donakov]

Maybe Phil B should read the manual ..........

Can anybody help with the problem?

[MIKON]

Check the flange on the drum drive in the back to see if the screw fell out

[m_donakov]

Check the flange on the drum drive in the back to see if the screw fell out

I check that when i first time got that priblem, everting is ok, Problem is fixed for 100k when i put another polygon motor, but i cant figure what is the problem. I cant change polygon motor every 100k

[slimslob]

Are you absolutely positive that there were no Service Codes. It could be a Level C Service Code. SCs that are not shown on the operation panel. They are internally logged. Check the SMC report. If the machine halts it could a code in the SC310~SC317. Many are sensor errors that could affect image quality.

[m_donakov]

Are you absolutely positive that there were no Service Codes. It could be a Level C Service Code. SCs that are not shown on the operation panel. They are internally logged. Check the SMC report. If the machine halts it could a code in the SC310~SC317. Many are sensor errors that could affect image quality.

I am 100% sure, i check sc histoty everytime when that is hapened.

[GIUBOSS]

Hi all

I have strange problem with my Ricoh MP 7500, poligon motor problems repeats every 100 000 copies. Change poligon motor working 100 000 copies with out problem after that problem with copy. No error code but blurry print an jaming. In the begining i cant figure out what is the problem becouse no sc code. One tehnician with lot of experiance told me to change poligon motor. After i change problem disapear, today after 2 months and 100k same problem. Put in 4th poligon motor in working ok. Already 3 motors in trash i must find what is causing polygon motor defects

Thanks

if I have to trust the expert technician that I assume has checked the rest (PM counter etc.) then
No error code but blurry print an jaming?
you said you replaced the polygon motor (I hope it is new), I had the same problem and I had also replaced the Laser Diode Unit

[m_donakov]

if I have to trust the expert technician that I assume has checked the rest (PM counter etc.) then
No error code but blurry print an jaming?
you said you replaced the polygon motor (I hope it is new), I had the same problem and I had also replaced the Laser Diode Unit

Do you suggest that I change the laser and try it?

[TonerMunkeh]

Change the door switches. The laser power goes through them, it could be you have a slightly fritzing switch.

[Mark Bbb]

Is this machine standing in a dusty or chemical pollutioned environment?
Are (fluctuating) heat or regular power failure regular?
Strange that a bad polygon would cause jams... never heard of that before!