The next steps describes the removal of the black metal frame.

Be careful, do not touch the open contacts on the left side (pink)! You will be surprised by a "wake-up" electrical shock even 15 minutes after turning off the camera. The flash-condenser still holds enough energy!

Start on the right side of the camera. There is a small black plastic clip (yellow) which has to be lifted up a little bit. Slowly and carefully begin to separate the rear metal frame from the camera body.

A critical part is the very slim plastic cover on top (green). The red marker will show you in which direction you have to move this sensitive plastic part.