Epson Stylus Photo 750 User Manual page 134

All lights are off
Possible cause
The printer is not
receiving power.
Only the P power light is on, but nothing prints
Possible cause
The interface cable is
disconnected.
The printer has an
internal problem.
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If the printer won't print, first check that:
The printer is turned on and the P power light is on, but not flashing.
Paper is loaded in the printer.
The printer is plugged into a working electrical outlet that's not
controlled by a switch or timer.
The interface cable is securely connected to the printer and computer.
If you still can't print, check the following solutions.
Solution
Try these solutions:
Make sure the printer is turned on.
Turn off the power and plug in the power cord securely.
Make sure the outlet is operable and not controlled by a switch or
timer. Try using another outlet.
Solution
Turn off your printer and computer, then connect the cable securely.
Make sure the cable meets the printer's specifications, as described in
Windows System Requirements
Turn off the printer and computer, disconnect the interface cable, and
run a printer check as described in
and Macintosh System
Running a Printer Operation
Requirements.
Check.