Brother MFC-J2720 - Cannot Identify a Black Ink Cartridge; Cannot Identify a Cyan Ink Cartridge; Cannot Identify a Magenta Ink Cartridge; Cannot Identify a Yellow Ink Cartridge

Confidential
2-24
Cannot identify a black ink cartridge.
The ink cartridge detection sensor and the ink remaining sensor are detecting.
Cannot identify a yellow ink cartridge.
The ink cartridge detection sensor and the ink remaining sensor are detecting.
Cannot identify a cyan ink cartridge.
The ink cartridge detection sensor and the ink remaining sensor are detecting.
Cannot identify a magenta ink cartridge.
The ink cartridge detection sensor and the ink remaining sensor are detecting.
User Check
- Check if incompatible ink cartridge is loaded.
- Reload the ink cartridge.
- Replace the ink cartridge.
- Check if ink cartridge has been already set before instruction for ink cartridge setting
during initial installation.

Error Code 20
Cannot Detect
LCD
Error Code 21
Cannot Detect
LCD
Error Code 22
Cannot Detect
LCD
Error Code 23
Cannot Detect
LCD
Step Cause Solution
1 Each ink cartridge sensor
defective
Replace the ink refill ASSY.
2 Main PCB defective Replace the main PCB ASSY.