[CQ] Black copy

[gansathya]

Dear friends,
i had a ricoh 2090. we take a continues copy after 30 to 35 copies copies come full black i replaced the drum assembly but still continues any one knows what i need to do kindly give me the help

[zed255]

Re: Black copy

Usually the charge assembly but I have seen the insulator block in the machine fail too. Other possibilities are leaking HV wires or the HV board.

[xordi69]

Re: Black copy

also replace all ozone filters

[gansathya]

Re: Black copy

i tried that one also, i take the HV BORD FROM running machine and placed the machine but problem continues.