Activate 2 - Enable Canon Printer

1. Plug the printer in, but leave it powered off. If it is already on, turn it off.
2. Press and hold the Stop/Reset button.
3. While still holding the Stop/Reset button, press and hold the Power button.
4. Hold both of them down for 5 seconds, then release the Stop/Reset button, continuing to hold down the power button.
5. Press and release the Stop/Reset button 2 times.
6. Release the power button.

At this point the printer should power on, but it will enter a special service mode. 

7. Wait until the green copy light on the control panel stops flashing. This takes about 30 seconds.
8. (Optional) If you wish, you can press the Stop/Reset button 1 time, then press the Power button, and a ROM page will print. It should indicate US region at the top.
9. Press the Stop/Reset button 5 times to enter the "Set Region Mode". Then press the Power button.
10. Press the Stop/Reset button 4 times for Europe/UK (3 times for the US if you wish to change it back later). Then press the Power button.
11. (Optional) If you wish, you can press the Stop/Reset button 1 time, then press the Power button, and a ROM page will print. It should indicate Euro region at the top.
12. Press the Power button 2 times to save the changes.