Just to inform
The problem is solved. Not a software issue but some kind of hardware issue or by design or I don't know.
A tiny but loud fan and a sensor too sensible. Resulting a fan runs like crazy even if printer is in deep sleep state.
Technical knows the problem, Konica Minolta knows the problem too but does not consider EU end users voice.
in fact, technical need to send some kind of mother board to KM. KM send a modified motherboard and charge technical about 200€ with a ≠ sensor and a ≠ fan.
Really big kudos for the technical, I should contact him at the first day. My bad.
The technical confirm I'm not alone and In EU lot of people complain about this problem in a quiet environnement.
Hope I will now enjoy my printer.
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