Flange Back Adjustment Sony Z1u - Service Manual?

I am trying to use my old Sony Z1u as a B camera but have encountered an apparent back focus issue (i.e. when I zoom in, focus, and zoom out, the image goes soft). Has anyone here seen that problem, and more importantly, does anyone here know how to fix it?

When I encountered that same problem on my EX1R I discovered that the camera's hidden menu offers an automatic "flange back adjustment" procedure.

Despite extensive searching, I haven't found a comparable fix for the Z1. But I have found a website that offers, for $15, a download of the Z1 Service Manual. Before I plunk down the cash for what might be a useless purchase, I thought I'd ask here: does anyone know of a procedure for adjusting back focus on the Z1? -and, does the service manual have the fix?

The closest I've come to an answer is either (a) send the camera to Sony, which will fix the problem for a rather large fee; or (b) buy the RM-95 remote, which enables you to access some hidden menu.

Thanks very much - perhaps hundreds of dollars of very much.

Bob C

Thanks. How'd you get your hands on the service manual?

I appreciate your help.

Bob C

Thank you for that. I had found that link. I found one that offered the manual, but the download doesn't work. I'm surprised that the information on this isn't available on the Internet. If you find it, please let me know!

Bob C

Thanks for the link, Bob!

I was even able to find the manual for my own V1. Very helpful.

Since I'm in Germany, I don't know any shops in the US...

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