ricoh 400 background copy

[remielee]

hello guys! can you help me about my problem of my machine ricoh aficio 400, theres a dark background on the copy i try to adjust the charging grid and the developer bias but theres no change still the dark background occured. please guys any suggestions do i need to change the developer or there are some alternative solutions? wait for your reply guys. thnk you in advance..more power..

[rsyarcia]

check for the total counter to determine if you need to replace developer,drum etc.