Andrew Pallant

If you have a lack of one (0r more) color do the following:

• Make sure all carts are full, placed well and are secured. 

• Insert a new original brother cartridge for the one that shows no color.
• Press menu then start bk-copy
• Press four times arrow up quick after another
• The printer will switch into maintenance mode and all lights will flash.
• Press 7 then 6 then 4 then start bk-copy.
• The printer will initialize the cartridges and refresh ink within tubes and print head. After that it does some power cleaning.
• When finished press 7 then 6 then 3 then start bk-copy.  The printer will run a power purge. 
• When finished press 9 then 9 to leave the maintenance mode. do run a quality test print.

Repeat until desired results.