Epson 5000/5500 - Manual (Page 100)

Power Supply
Power is not being supplied.
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The OPERATE light does not go on.
Check that the power cord is plugged into the electrical
outlet properly.
If the electrical outlet is controlled by an outside switch or
automatic timer, use a different outlet.
Plug another electrical device into the outlet to determine
whether the outlet is operating properly.
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The OPERATE light comes on briefly and then goes off. The light
stays off even when the power is switched on again.
Check that the printer’s voltage rating matches the voltage of
your electrical outlet. If the voltages do not match, unplug
the printer and contact your dealer immediately. Do not
reconnect the power cord to an electrical outlet.
Troubleshooting 6-3