Seeking schematic or owners manual for Telefunken ELA E130b "stereo width control"

I'd love to get my hands on a Telefunken/Siemens U273 schematic. Especially since I picked one up on e-bay that appears to be D.O.A. I'll gladly reimburse someone a reasonable sum if they can photocopy and mail me one. Or be ever grateful to be pointed in the right direction on my quest. Thanks!