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Thank you everyone for your help. I ended up putting the old yellow drum on with the new cyan developer to rule out each one and after running several copies cyan came back. So it appears that it is...

Yes, I followed the correct procedures in SM

Everything appeared clean and in good shape.

No Error codes for this

I am not formally trained, but I have been working on this machine (mine)...

Thank you for your response. I cleaned all the lasers with the cleaner bar. I also removed the ITB and took off the belt and cleaned everything including the cleaning blade unit. I went ahead and put...

I installed a new Cyan Developer and drum, before doing so I the old developer and drum worked ok but had reached the end of its life. Cyan was dumping toner and the drum was producing streaks. After...

I just replaced the Cyan Developer and Drum due. It worked fine before I did this except it was at the end of its life dumping toner (dev.) and leaving streaks (drum) but cyan was there. After...

Any suggestions on easy or quick things to try first before having to order a new fixing Unit?

That is kinda of what I was figuring but then I thought it might be a defective toner cartridge with the clumps of toner being thrown out and that maybe it had gotten on the laser glass. But I wanted...

Yes, Genuine Canon Toner. So far I have basically have just taken the ITB unit out and cleaned the blade and vacuumed the toner that was mostly in clumps on the each side. I have not cleaned the...

I have attached a picture of a problem that just started. Can anyone assist me on this. I had a brand new OEM Toner cartridge inserted, I started getting clumps of toner dumped on the ITB so I am not...