Canon imagePROGRAF iPF720 User Manual page 526

Ink Tanks
11.
Close the Ink Tank Lock Lever until it clicks.
12.
Make sure the Ink Lamp is lit in red.
Note
•
Ink Lamp ashes when there is little ink left.
13.
Close the Ink Tank Cover.
The printer returns to the mode before replacement of Ink Tank.
512 Maintenance