Canon iPF6400S User Manual page 818

Replacing Ink Tanks
3
Press ▲ or ▼ to select Rep. Ink Tank, and then press the OK button.
A message on the Display Screen requests you to open the Ink Tank Cover. Remove the Ink Tank at this
point.
Remove the Ink Tanks
1
Open the Ink Tank Cover and check the ink lamps.
Ink lamps flash when there is little ink left.
2
Press the tip of the Ink Tank Lock Lever of the color
for replacement horizontally and lift the Ink Tank Lock
Lever to open it.
818
iPF6400S
User's Guide