Di3510f COF32 error and COF33 after F8

[Neos Eye]

I have this second hand Di3510f machine..when i replace the developer i forgot to clear the counter and do F8..COF32c error occur..then i clear the counter and do F8..but COF33 error occur..what will I do?

[fixthecopier]

Those machines are picky about their drum and developer life need to match. Put a new drum on and try, but do not run the F8 again.

[minimerlin]

The COF33 code happens because the dev tanks tend to get a warp on the cleaning/mixer shaft so the atdc sensor does not get cleaned. It should clear by shutting down the machine and reboot. Shold be no need to fit drum/dev again as long as the machine has not done too many copies since you forgot to clear the counters.

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[Neos Eye]

i got it working once..i removed the toner bottle, print black copies until "please add toner" occur..add a new toner bottle..i changed the tds adjustmnet to 135, works fine on few prints,then cof32 error..adjust to 140, few prints, cof32 error..now im on 174..im hoping to get a desired value that a sensor could work well..am i doing right???