Canon imageRUNNER C3489 Reference Manual page 279

2
(numeric keys) ➞ press
Enter the license key using -
[Start].
Details of each item are shown below.
Press to move the cursor to the desired position.
[ ][ ]:
[Backspace]: Press to delete the last number entered.
If the following screen is displayed, press [OK] ➞ enter the correct license key.
6
If the following screen is displayed, the required optional equipment needed for
license registration has not been installed. Press [OK] ➞ install the required
optional equipment or make sure that the required optional equipment is installed
properly ➞ try registering the license key again.
6-31
License Registration