Half looks great but the other half is gray scaled has been getting worse for about a month
1)So, your copie is half with good black color, and other half light, with possiblle white streaks?
IF YES: you need to clean the laser unit and replace the toner cylinder cleaning blade, also check the drum unit - if it got over 25000 copies change it too.
2)So, your copies are half good and half like no toner is fixated on paper?
If thats the case replace fixing roller and bushings, and check the press. roller bushings.
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