Time for maintenance T on taskalfa 8000i

[Fundikopia]

I have 8000i which is permanently showing Time for maintenance T. This does not clear even after using U906 to reset. Instead, after using U906 and switching OFF the ON, error C0840 appear. C0840 disappears after switching machine off/on, but "time for maintenance T" remains.
Any help on how to permanently clear both error will be appreciated.

Fundikopia

[Eric1968]

Reset the maintenance counter. This sometimes happens. The Kyo-techs told me it's an issue with the time of the various processors in the machine not being the same.

[Fundikopia]

Reset the maintenance counter. This sometimes happens. The Kyo-techs told me it's an issue with the time of the various processors in the machine not being the same.

U251 counters have all been cleared. Executing ''all memory clear'' and executing mode U002(returning to factory settings) and U278(setting installation date to current) also did not work.

Is there a way to match the processors' time?

[Eric1968]

U251 followed by U906 did it for me. But that was on the 250ci/300ci series.

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[Tonerkiller]

Set the time then do the 906

[tonerleak]

set delivery date maintenance mode 274 or 278. then do u906.

[taskalfaman]

update to version 6
do sim 906
problem will not come back anymore.