[CQ] MPC 305 SPF black toner falling dot dot all over page

[saa]

Dear All

one mpc 305 SPF is haveing dot dot black many places all over page.
toner falling and spreading over. Replaced with another good one used
black PCU / Transfer and Fuser unit. Problem still same.

looking for expert comments.

thanks you

[slimslob]

Re: MPC 305 SPF black toner falling dot dot all over page

Could be coming from the fusing unit.

[CableGuy]

Re: MPC 305 SPF black toner falling dot dot all over page

I've experienced toner marks on these models before and found it comes from a build up of toner and paper dust in the Transfer belt cleaning unit. It seems to be more prolific when customers are using heavier or none standard stock. It's easy to get the unit out and clean, just don't break the little clips in the cleaning unit.
Good luck....