20 Most Recent Brother MFCJ615W AllInOne InkJet Printer Questions & Answers

You need to enter maintenance Mode by pressing the following buttons in row in less than 2 seconds Menu Star 2864. Then press 76 and then 6 and then press the right arrow until the monitor displays Black. Then press MONO Start and the machine will heavily clean Black

sounds like your printer is trying to act as a fax machine and intercepting the call. Program into it a delay ring of more than your answering machine before connecting.

try to clean the printheads

unable to init. 50

looks tricky :)
lift the scanner, not just the lid but all the top, using two hands on the plastic tabs on the sides until it locks in upper position. there you should see the usb.
if you have manual at hand, take a look on page 64
if you do not have manual, check the link http://www.manualowl.com/m/Brother%20International/MFC-J615W/Manual/116994