3-8AcerAltos 19000Pro4 System GuideThe doors are attached to the main housing by screwless hinges.Follow these steps to remove a door.1.Unlock the door with the key (when necessary).2.Open it to more than 45°angle.3.Lift it up for about an inch, then move it away from the housing.Figures 3-7 to 3-10 show how to remove the housing doors and upperfront panel cover.Figure 3-7Removing the Right Panel DoorFollow the same steps to remove the left panel door.