Light Image or Grey background on MP4000/5000

[Ricoh HK]

Have any people aware the MP4000/5000 have Light Image or Grey background problems even the developer and PCU are not reach the PM yielding?

[teebee1234]

Re: Light Image or Grey background on MP4000/5000

That's probably the number one problem with this series, it is an inherited issue from the previous one (mp3500/4500). Attached is a TB in reference to it, also check back here several times to see other posts on remedies that have helped.

[Ricoh HK]

Re: Light Image or Grey background on MP4000/5000

Thanks teebee1234! I read the pdf but my experience tell that the Magnetic/Development roller is required to clean below 100K, not PM 160K.
Also, the Magnetic/Development roller is easy coated dark but the older model without this problem. So I this the toner or developer have some problem. What your opinion? Thanks!