Black and yellow are Okey so I swapped black and cyan without removing developer powder cyan developer units worked on black and black developer unit...
No issues with the North America fusers. Everything reset just fine. Slam in a drum and fuser. Those counters reset. Only thing you had to reset was...
If you installed black dev unit into cyan and cyan was visible then do not you think the problem is with the cyan developer assy? You said that cyan...
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For low TCR errors specifically. Check that the toner drive motors are running. This can be accomplished by removing the RU, if installed, and cover...