Back case acts as a door to access change out film. It can be easily removed from the device and replaced if it becomes cracked or otherwise unusable.
In this guide we will refer to 'left' and 'right' as though the camera is facing away from you.
Pull up on the film rewind lever on the top left of the camera to release the back door.
Once the door is released, open it completely.
Locate the silver tab on the inside of the door hinge. Slide this down to free the hinge and remove it from the camera.