If colour still appears incorrectly after auto-registration, you will need to perform manual registration.
1
For MFC-9440CN and MFC-9450CDN, press Menu, 4, 7, 1.
For MFC-9840CDW, press Menu, 4, 8, 1.
For DCP-9040CN and DCP-9042CDN, press Menu, 3, 7, 1.
For DCP-9045CDN, press Menu, 3, 8, 1.
2
Press Mono Start or Colour Start to start printing the colour registration chart.
3
When the machine has finished printing the registration sheet, press 2 (Set Regist.) to correct the colour manually.
4
Starting at 1 (Magenta Left) on the chart, check which coloured bar has the most uniform print density and enter its number into the machine using the and keys.
Press OK.
Repeat for 2 (Cyan Left), 3 (Yellow Left), 4, 5, 6 to 9.
and 
keys. 