Brother MP-21C Service Manual page 191

USER'S GUIDE
How to replace the ink cartridges
4-2
1. Make sure that the
2. Remove the ink cartridge you need to replace.
Fig. 4-1 Removing the Cartridge
Warning
DO NOT push the shutters in the ink cartridge slot. There are sharp
pins inside the Ink Cartridge Slot. If you touch them, it might cause
injury.
!
Caution
DO NOT remove ink cartridges if you do not need to replace them. Once
you remove a cartridge, you cannot re-use it.
!
Caution
Throw away the removed ink cartridges immediately so that you do not
re-install the old one by mistake.
3. Open the new ink cartridge box and take the cartridge out of the bag.
Note
You can recognize whether the cartridge is used or new by the white gum
on the rear of the cartridge. If it is stained with ink, it is a used ink
cartridge.
(On/Off) LED is on. Open the top cover.