- Push the button [A] and open the front cover [B].
- Insert a flathead screwdriver into
, 
, and 
in order to release the three hooks of the left upper cover [A].
Remove the left upper cover [A] by inserting a flathead screwdriver into [B].
- Be careful not to damage the hooks on the inside of the left upper cover when you remove or install the left upper cover.
- Be careful not to damage the hooks on the inside of the left upper cover when you remove or install the left upper cover.