Epson 300 User Manual page 58

E
4. Hold down the load/eject button and turn on the printer;
then release the button.
The printer prints an operation check page including the
version of your printer's ROM, the ink counter code, and a
nozzle check pattern. Here is a typical printout:
The above sample is in black and white, but the actual test prints
in color (CMYK).
6-4
Troubleshooting