Canon Colorado 1650 Operation Manual page 208

Replace the maintenance tray (first design)
6. Pull to open the maintenance drawer.
7. Take the lid out of the drawer.
8. Push the handle of the inner drawer and pull carefully to slide the maintenance tray to the front.
Make sure to extend the drawer completely.
CAUTION
Open the inner drawer very carefully to not let the ink splash and spill.
208 Chapter 6 - Maintain the system