Older Sony Menu Access?

[Beachboy]

I acquired a 1992 vintage Sony KV-13TR27 TV this weekend. Naturally, it didn't come with a remote (does anyone NOT lose their remotes??). I've tried using several universal remotes with it, and I have had NO luck accessing the menu for adjusting the color, tint, brightness, etc. I've tried every Sony code the remote manuals suggest, and I can make the remotes work fine for power, volume, channel, muting, etc, but I can't get into the menu settings. I don't see anyplace on the front panel controls to access the menu function, either.

I have the original Sony remote to a same-year Sony 20" XBR series TV, but that remote's video buttons won't access the little Sony's menu either. So am I basically stuck with the video settings forever, or does anyone know how to break into the video settings menu? Thanks for any ideas you might have. I hate to junk this little Sony, since it seems to have a great picture (once I tweak the color intensity and hue).