Thanks to those who responded to my question. The error code does indicate a over heat issue. At the end, the fan on the left side ran all the time, yet was only pumping out cool air.
Xerox sent a repair person, under warranty repair, and replaced the main control module. It works fine now.
Recently installed ColorQube 8570, have only printed 78 pages. After power up and wait for printer to initialize, eventual I get the code printer error: 93,93,532.00:80 on the display screen with green-orange-red flashing led. Press the ? button and printer shuts off. I power off and then on, printer initializes and the display has "XEROX" logo. After long, long wait 15+ minutes error displays again.