Canon iPF780 Series Basic Manual page 110

Ink Level Detection
4
After checking the message, press the ▶ button.
5
Press ▲ or ▼ to select Yes, and then press the OK button.
6
Check the message and press the ▶ button.
7
Check the message and press the ▶ button.
8
Press ▲ or ▼ to select Yes, and then press the OK button.
9
A confirmation message about updating ink information is shown
on the Display Screen. After checking the message, press the ▶
button.
110
iPF780 Series
Basic Guide