While performing multiple activities an error message says "The media is write protected" how remove?

Doubt that it is either of the STK's. If they are bad, then you would get a DC protect error and the unit would shut off. Most likely problem is either your digital board is bad or the volume control IC on the bottom of the main board.

CD370 errors occurs when• Multiple errors are detected by the
abnormal check of each NVRAM data.
You need to reset the printer's NVRAM . First find out how.

It isn't mentioned in the KBizhub350 User Manual, as required by government. Any fraudulent activity is also kept on the nvram. (copy bank notes).

it all should have been added in from the gitgo..then you would have had an entire total.. thats why its not going through.. simple math..

That's MALWARE riding on the Skype activation. Ren Spybot and Malwarebytes

The materials requring burning maybe copyrite protected. Second, the cd burner would be malfucntioning by connections to the computer. third, the cd disk may not be empty to allow additional media records producing error messages. Hault the entire burnign process, disconnect all devices, reconnnect, and then power back on to allow computer to perform diagnoses of what is missing or malfunct.

There are free converters, convert it to mp4 or wmp,
and back to mp3, a lot of times converting removes
the sig. just google mp3 converter.

your pendrive might have a tiny switch on its side that you need to slide to prevent the error message from coming.hope it helps!

Microsoft defines Kernel32 errors as follows: "The Kernel32.dll file is a 32-bit dynamic link library file that is found in Windows 95, Windows 98, or Windows Millenium Edition (Me). The Kernel32.dll file handles memory management, input/output operations, and interrupts. When you start Windows, Kernel32.dll is loaded into a protected memory space so that other programs do not take over that memory space. On occasion, you may receive an invalid page fault (IPF) error message. This error message occurs when a program tries to access the Kernel32.dll protected memory space. Occasionally, the error message is caused by one particular program, and other times the error message is provoked by multiple files and programs."

Microsoft defines Kernel32 errors as follows: "The Kernel32.dll file is a 32-bit dynamic link library file that is found in Windows 95, Windows 98, or Windows Millenium Edition (Me). The Kernel32.dll file handles memory management, input/output operations, and interrupts. When you start Windows, Kernel32.dll is loaded into a protected memory space so that other programs do not take over that memory space. On occasion, you may receive an invalid page fault (IPF) error message. This error message occurs when a program tries to access the Kernel32.dll protected memory space. Occasionally, the error message is caused by one particular program, and other times the error message is provoked by multiple files and programs."