Power Macintosh 9500: Unable to Sleep (6/97)

We have Power Macintosh 9500 computers and either an AppleVision 1710AV or 1710 Display. Whenever we select Sleep from the Special menu, the screen goes black for a few seconds and then the image comes back on the screen. This happens in every resolution. How can we get the computer to sleep?
You need an updated System Enabler for the Power Macintosh 9500. System Enabler 701 v1.1 corrects this issue and is available on the Power Macintosh 9500 CD v2.0 or later.
Published Date: Feb 19, 2012