Brother HL 4040CL

[majormellons]

Hi Folks,

I have an issue with my Brother HL 4040CL printer.
I'm getting a.....

HV SELF TEST
WToner Mismatch

error.
I saw somewhere, not sure how or where, that it was a 'Print Unable 28' error.

No amount of 'google is your friend' searching is coming up with any fixes.

Your thoughts or assistance would be most welcome.

Thanks in advance.

MM