same problem
I had a cs-2550 do the same thing i tried replacing the tranfer roller and was still getting the white lines after 20 to 25 copies so i pulled out all the pm units and found that the developer had the same marking s on them i replaced the developer and havent had a problem since.
I had a cs-2550 do the same thing i tried replacing the tranfer roller and was still getting the white lines after 20 to 25 copies so i pulled out all the pm units and found that the developer had the same marking s on them i replaced the developer and havent had a problem since.
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