My x100s is not showing an image in the LCD screen. All system settings, etc., do appear normally so the LCD is functioning. I have checked through all the settings I can think of that might cause this. I've also done a complete reset and updated firmware. When I take a shot, a black image is recorded to the memory card. The LCD also shows a low light warning and AF warning. In all other respects, the camera is working properly. Thoughts?