Canon WUX450 User Manual page 199

3
As you hold down the lamp cover release button, slide the lamp cover
toward the back, and then lift the cover to open it.
Release button
As you slide the lamp cover toward the back, be careful not to pinch
your fingers between the lamp cover. We recommend using both
hands to slide the cover, as shown.
4
Loosen the three screws securing the lamp unit.
5
Remove the lamp unit.
6
Follow this procedure in reverse to install a new lamp unit.
Replacing the Lamp
199