Got an Epson 900G printer (B&W deal) hooked to my G$ tower running X.4. The things stars off okay and the Epson Printer Utility can see it alright. Once i select it from the list of printers (only one there), I am taken into the printer utility. I usually get only one event from the printer before it goes comatose - I can check the status, or check the printer nozzles, or clean the heads, etc. Once I do this one and only one thing, the printer goes comatose. Sometimes the power light stays on (green), but usually, it just dies and will not power on for several minutes. The only symptom of a problem on the Mac is a communication error, even if the printer has a solid green light and appears ready to print.
One transaction, then comatose.
Printer has a good working history when used on a 9.2.x machine about a year ago.