[QUOTE= The HL51000 works perfectly. The MFC9340CDW never printed. But at least I have one good functioning printer. Thanks again.[/QUOTE]

If you open a browser search and look for MFC9340CDW linux driver you should see a Brother download link which will provide you with the linux drivers for that printer. You will need the "deb" version. In addition you don't say rather you are trying to connect on USB, Lan or wifi. The string I supplied in the previous post is for wifi printing. If you download and install the drivers and then use the printer utility to install it you may have some success.
Anyway, thanks for the feedback on the HL printer. I,m on vacation so I may not be very quick to keep up if you get something going with the MFC printer. good luck