Change developer every 300,000 copies
Total copies divided by 300,000
PM 150,000 copies. Items to be replaced. Drum, Drum blade, Charge Roller, Charge roller cleaning pad, drum pick off pawls, paper feed roller, Transfer belt and transfer belt cleaning blade, fuser heat roller and pressure roller, Doc Feeder transport Belt,
Hope this helps
When developer goes bad you use more toner for one thing, but the main sign is a gray background in your copy. The print should be black but appears to be gray. The ricoh 350/450 was always noted to leak toner and developer as it runs. Check your machine and see if you see any small piles of toner, which also has developer in it, in the machine. Ther are small seals made of felt that need to be replaced if you have this problem. These seals rub against the drum sides....Good luck.
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