Epson TM-300A Operator's Manual page 11

l Operation panel
Panel Switches
POWER switch
Turn the printer ON and OFF.
FEED switch
Feeds roll paper.
Feeds roll paper based on the line feed amount set by ESC 2 and ESC 3.
Panel Lights (LED)
POWER LED (green)
On when power is turned on.
PAPER LED (red)
On when the paper roll near the end.
Blinks when an error has been detected, when the printer is in the test printing
standby state, or when printing has stopped due to exceeding the allowable
print duty cycle.
(See 5-2 The PAPER LED)
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