Problem to register to AD for MX-M6050

[abangcopier]

Hi, want to ask about this problem if anyone know how to fix it.

I tried to register MX-M6050 to Active Directory but failed. There is no problem for AD configurations and network since MX-6071 can be registered.
Is that possible cause by hard disk or firmware? Because MX-M6050 not equipped with hard disk (optional to add-on) Or, Active Directory is only works for Colour MFP and not for Monochrome machines?
I try to googled for few days and ask the SHARP Principle but still not work. The tutorial also give the Colour Model for guide, not for Monochrome.
Please advise..

[abangcopier]

BUMP~~

Try everything in youtube and tutorial.. anyone have the same things happen?