Epson Action Laser II - Manual (Page 161)

Power Supply
Power is not being supplied to the printer.
After turning on the printer, the display panel remains blank.
The power cable may be disconnected or may not be completely
plugged into the electrical outlet. Turn off the printer and check
the power cable connections between the printer and the
electrical outlet; then turn the printer back on.
The problem may be with the electrical outlet itself. If the outlet
is controlled by an outside source such as a wall switch, make
sure it is on.
If the printer still does not operate, the outlet may be faulty. Plug
another electrical device into the outlet to check whether the
outlet is operating properly.
7-16 Troubleshooting