Canon PIXMA MP990 Series Getting Started Manual page 12

Install the Ink Tanks
3
Tilt the ink tank, then insert it under the label and against the back end of the
slot.
Make sure that the color of the label matches the ink tank.
• Install in a well-lit environment.
0 Hardware Setup
4
Press the PUSH mark on the ink tank firmly until it clicks.
When the installation is completed properly, the Ink lamp lights red.