Brother MFC-3820CN - Manual (Page 167)

13 - 20 TROUBLESHOOTING AND ROUTINE MAINTENANCE
Replacing the ink cartridges
Your MFC is equipped with an ink dot counter that automatically
monitors the ink level in each color cartridge. When the counter
detects an ink cartridge is running out of ink, the MFC will notify you
with a message on the LCD.
The LCD shows you which color cartridges are low or empty. Be sure
to follow the LCD prompts so you replace the color cartridges in the
appropriate order.
When the ink cartridges are running low, you must use the Ink
key to begin the cartridge replacement (Steps 1 to 3). If the ink
is empty, skip to Step 3.
1
Press Ink.
2
Press or to select Replace Ink .
Press Menu/Set.
3
Lift the scanner cover.
4
Push the appropriate colored ink cartridge covers and remove
the used ink cartridge.
5
Open the new ink cartridge bag for the color shown on the LCD,
and then take out the ink cartridge.
If one or more ink cartridges are empty, for example Black, the
LCD shows
Pls Open Cover .
2750 2750 2750 2750
Ink Cartridge Covers