Hi Brien,
Thank you for using the Support Forum. Please make sure that you have followed the steps for disabling the tones. If the tone continues to sound please consider contacting your support centre for further assistance.
I have a Workcentre 6027 that makes a beep after every single print job. I have tried disabling the audio beep in the system menu bu the problem still persists. I would like to report this so it can be fixed in future updates.