Star Micronics SP300 Series - Manual (Page 19)

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[Paper out]
When the “paper out’ detector senses the end of the paper, the printer stops
printing after printing a maximum of two more lines or on feeding the paper.
Immediately after a “paper out” condition is detected, the printer sets to OFF
LINE and the DTR changes to “MARK”. (To reset printer after a “paper out’, load
paper into the printer and press the ON LINE switch to set the printer to ON
LINE.)
[Mechanical error]
Mechanical errors are detected when the front cover is opened during printing, or
when the motor locks and the unit will not print. Immediately after a mechanical
error occurs, the printer sets the DTR to “MARK” and then sets the printer to OFF
LINE. To cancel a mechanical error, close the front cover properly and press the
ON LINE switch. If the buzzer sounds and the ALARM lamp flashes at this time,
then locate the cause of the error and turn the power for the printer off and back
on again to reset the printer.
[Status]
Data buffer
Full
Near Full Near Empty Empty
DTR “MARK” DTR “SPACE”
Remainder
256 bytes
256 bytes
Mechanical error
1: error
Buffer empty
1: empty
Buffer overflow
1: overflow
Compulsion switch
High level
(Switch is set to ON)
b7 b6 b5 b4 b3 b2 b1 b0
Constantly
set at “0”
Vertical parity error
1: error
Framing error
1: error
Paper empty
1: empty