Can you print from your PC ?
Do you get any error message or code, when you try to scan copy or fax ?
Then, can you explain, what is exactly happening, when you try to scan copy or fax ?
Are you trying to copy any b&w document ?
Do you mean, the printer is printing in black from your computer ?
I can understand your frustration, but as I cannot see your printer, I have to clarify the problem completely, so that I can help you. As you are getting blank pages, when you try to copy or fax is black, but you are not clarifying, if you are able to print in black from the PC or not, because without that fact, I will not understand the exact fault.
OK, as you wish, if you do not want to co operate with me and want a solution for the problem then, I am very sorry that is not possible, because this is a online platform and I cannot see your printer.