5 screws directly attach the printer to the base of the case. 3 at the rear are obvious. A sixth screw also needs to be removed from adjacent to the USB socket.

The first photo shows screw 4 at the front left corner.

The second photo shows screw 5 - which is buried just to the left of the motor.

The third photo shows the final screw, which attaches the metal frame adjacent to the USB socket.

You can now carefully lift the printer from the lower part of the case, taking care of wiring!