How to change battery on Mamiya Auto Lux 35?

How do I access or change the battery on a Mamiya Auto-Lux 35?



Thanks in advance =]How to change battery on Mamiya Auto Lux 35?
I don't think the Auto Lux 35 has a battery. The selenium cell is simply used to power the exposure needle system and set the aperture when in shutter priority (Auto) mode.



Here's the manual in case you don't already have it:

http://www.cameramanuals.org/mamiya_pdf/