Pentacon Six metering prism - adjustment?

Hi there,

does anybody have a service manual for the metering prism or knows how to adjust the meter. I have read it should be rather simple. But I don't want to dismantle it without any info, don't want to destroy it by trial and error.

Thanks in advance and best regards - Reinhold

It seems to me that when I calibrated the prism on my pentacon six, I removed the calculator dial on the top of the prism, and set the dial to the correct setting according to my Lunasix 3, then re-assembled everything. I guess it worked since the prism meter is pretty accurate now. I never adjusted anything inside the prism. I did however, have to go in there to re-attach a wire that had come off. Pretty simple stuff in there.