Epson 4003353 - Manual (Page 21)

Se Product Description
Indicators
Operate when the printer is on. Blinks during power on and off sequence.
Data when print data is in the input buffer. Data and Pause lights
blink if an error occurs.
Paper Out On when the printer is out of paper. Blinks when a paper jam
occurs.
No Ink Cartridge On when the ink is exhausted.
Economy when economy printing mode is selected.
Condensed
when condensed printing mode is selected.
Font These LEDs indicate the selected font.
Pause when printing is paused.
1.4.2 Panel Operation at Power On
You can activate the following modes by doing the following:
Self-test mode Turn on the printer while holding down the Load/Eject button.
Hex dump mode Turn on the printer while holding down the Font and
buttons. Once this mode is selected, the printer prints all received
data in hexadecimal format.
Demonstration mode Turn on the printer while holding down the button.
Default setting mode Turn on the printer while holding down the E c o n o m y /
Condensed button. For more information about the mode, see
Section 1.4.3.
Initialize EEPROM Turn on the printer while holding the Font, Load/Eject, and
Pause buttons.
Rev. A
1-13