Brother DCP-4020C - Manual (Page 219)

15 - 18 TROUBLESHOOTING AND ROUTINE MAINTENANCE
5
Open the new ink cartridge bag for the colour shown on the
LCD, and then take out the ink cartridge.
6
Each colour has its own correct position. Insert the new ink
cartridge into its carriage by pressing until it clicks.
7
After installing the ink cartridges, close the ink cartridge cover,
output paper support and scanner cover.
8
If you replaced an ink cartridge while NEAR EMPTY XXXX was
displayed on the LCD, the LCD will ask you to verify that it was
a brand new one. Example:
DID YOU CHANGE BLCK? 1.YES
2.NO . For each new cartridge you installed, press 1 on the dial
pad to automatically reset the ink dot counter for that colour. If
the ink cartridge you installed is not a brand new one, please be
sure to select 2.
WARNING
If ink gets in your eyes, irrigate them with water immediately and call
a doctor if you are concerned.
If you wait until INK EMPTY XXXX messages is displayed on the
LCD, the DCP will automatically reset the ink dot counter.
New Ink Cartridge
Insert until it clicks