C D368 on C250

[CKiiza]

I have this strange error code on the machine, Wont go away even when I format hard disk or format it. It doesn't exist in my service manual, thought may be its NVRam prob or something. Some ideas please? thanks.

[jotunn]

This is an error message related to NVRAM problems, you can try to clear this error with following combination: [STOP] 0 7 1 3 9 then MFP should show [*] on display, press it, and next MFP should ask for turning power off and on.
Sometimes you will need to perform that procedure several times - even 50 or so.

[remati]

...yes 50~60 or 70...but normaly it works....