I don't mean to hijack this thread but...
I still have a few of the cx50 series I keep hobbling along. Aside from anything foam related they still work reasonably well but holey hell do those K IUs spew. I confident that I know all of the tricks (the mod, HV board, etc etc). 30 min to vacuum? More like 2 hours if it smothers the PH and migrates to the paper trays that get toner on the tray below if you open/close one.
I never confirmed this, but I believe this happened a few times a one place because they were using cx52 K toners that has more Ferrite Oxide and slightly different resin blend. Which leads me to the OP is OEM and proper model toner being used?
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