The output density for each color may vary depending on the environment the machine is in such as temperature and humidity. Calibration helps you to improve the color density.
1
For MFC-9440CN, press Menu, 4, 5.
For DCP-9040CN, press Menu, 3, 5.
2
Press or to select Calibrate.
3
Press OK.
4
Press 1 to select 1.Yes.
You can reset the calibration parameters back to those set at the factory.
1
For MFC-9440CN, press Menu, 4, 5.
For DCP-9040CN, press Menu, 3, 5.
2
Press or to Reset.
3
Press OK.
4
Press 1 to select 1.Yes.
Note
If an error message is displayed, press Stop/Exit and try again. For more information, see Troubleshooting and routine maintenance in the User’s Guide.
or 
to select Calibrate. 
Note