Epson LQ-300+II User Manual page 117

You can print the self test using either single sheets or continuous
paper. See "Printing on Continuous Paper" on page 15 or
"Printing on Single Sheets" on page 30 for paper-loading
instructions.
Caution:
c
You should use paper at least 210 mm (8.27 inches) wide to run
the self test; otherwise, the print head prints directly on the platen.
Follow these steps to perform a self test:
1. When using continuous paper, make sure paper is loaded,
and the paper release lever is set to the correct position. Then
turn off the printer.
Caution:
c
Whenever you turn off the printer, wait at least five seconds
before turning it back on; otherwise you may damage the
printer.
2. To run the test, turn on the printer while holding down the
LF/FF button or Load/Eject button.
Self test is printed in Draft characters when the LF/FF button
is held, or in LQ characters when the Load/Eject button is
held.
3. When using single-sheet paper, load paper in the printer.
After a few seconds, the printer loads the paper automatically
and begins printing the self test. A series of characters is
printed.
Note:
To temporarily stop the self test, press the Pause button. To resume
the test, press the Pause button again.
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