Question about Brother DCP-9040CN Laser Printer

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Yellow Toner Ink Spotting

Everything I print in color it has droplets of yellow spots down the line. I cleaned the drum, the toner and the belt but the spots keep recurring. I need help like yesterday.

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  • Yvonne Davey
    Yvonne Davey Feb 11, 2009

    Brother DCP-9040CN Laser Multi-function Printer. What is causing yellow spotting on my color copies? I tried cleaning the drum and the belt but the spot keeps recurring on the belt. I even tried replacing the yellow cartridge. Help immediately, help!! - ydja

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Take a tissue and clean the area where the toner is. Do not use anything wet at all. Just a soft tissue. Re-install toner and try again to print. If the problem continues, it may be a leaking toner catridge. The cartridge has a cleaning blade built in and it may be deffective. Try a new toner cartridge if so.

Posted on Feb 12, 2009

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My Brother HL 4040cn printer is leaking toner, black and yellow. It leaves spatter spots of these colors on printed pages. The machine does not have any messages. Do you know what this may be from or how...


If you've taken the printer apart and cleaned the belt unit and everywhere else in the paper's path, then it is probably either a bad toner cartridge or the drum. Since it's multiple colors producing splatter, its most likely the drum unit. Try taking the drum out and removing all of the toner cartridges and then clean the drums and corona wires. If its still producing splatter afterward, you've got yourself a bad drum.

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envelopes have air in them and can bounce along the bely after the black has printed, and seeing the toner is powder and not yet fused on, the toner touches the cyan drum as the envelope hits the fuser entry point as well as dragging on the Left transfer belt Blue lift handle(take out the belt and spring the handle off).
If you open the lid in this print mode, and lift out the cyan drum, turn it over and pull back the cover for the OPC drum, you will see the black toner on the green drum.
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So I understand correctly, you were seeing different color toner on the cyan and yellow rollers?. If so gently clean that side of the roller off. Rotate the white gear on the right side of the toner cartridge back towards you and see if the correct color comes back on the roller. If you were seeing grooves on the roller then they will have to be replaced.

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