Malfunction code 6301 on bizhub 600 - Konica Minolta Office Equipment & Supplies

SOURCE: Malfunction(Code 3451) of Bizhub C252

This is a fuser heat error. The fuser unit is located in the area where the paper exits the machine. It heats up and "fuses" the toner onto the paper. The error code means that it did not heat up properly. This means you will most likely need a service person to come out and diagnose the problem.
You can try to reset the error but I doubt it will help.
Turn off the MAIN power switch (not the one on the control panel)
Now hold down the utility key while turning on the main switch and continue holding the utility key for at least 10 seconds. You should see a screen come up with nothing but "trouble reset"
Touch trouble reset and you should see a small "ok" come on. Then turn off then on the main switch again.
Good Luck and Thank You for using Fixya.

SOURCE: copier malfunction

Code C0F36 is a low toner density error on the black developing unit.

Was it asking for black toner before this code appeared?

SOURCE: Bizhub 200 Error Code C0202

I fix the error thanks to Patrillica on my BIZHUB 350!
The paper stock in tray 1 or to be exact above the tray 1, when you open it, you can hardly see it. After you remove the paper you should unplug your machine and then lug it back.
Thanks again to Patrillica.

SOURCE: BizHub 250 Malfunction Code C2557 - HELP!

I can even reach the "service mode".
The screen shows the error (c2557) and I can not access to anyother function.