Troubleshooting
A. Once you’ve replaced your Canon printer ink cartridges, you should run a quick print test to make sure everything is working correctly.
If the ink comes out streaky, smudgy or missing color consult your Canon printer manual to check how to re-align the printheads.
Please run printer head cleaning or deep cleaning procedure 1 - 4 times. ( You can find it under your printer LCD screen or printer Printing Preferences on your computer).
B. If your printer can't detect the chip on cartridge, please try to clean the chip surface with a q-tip and alcohol or try an eraser from a pencil.
C. Try another cartridge from same combo pack beacuse it may be caused by defective chip or damaged chip.