Link Electronics PRC-970 Proc Amp--Manuals available?

[N2IXK]

Just scored a couple of these guys on the auction site, and was wondering if anyone had manuals for them. All I can get from the web is the spec sheet/catalog page.

Looks like a really nice unit, with 2 banks of DIP switches to pass/replace any line in the vertical blanking interval, PERFECT for stripping macrovision or other nasties. Plus all the usual proc amp functions like pedestal, sync, chroma level controls. Looking forward to playing around with these.