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Paper Empty
When the paper out detector indicates end of paper, the printer stops printing after
a maximum of two lines of printing or paper feed. The host computer can receive
the printer status by transmitting an ENQ code to the printer. The printer goes OFF
LINE and sets the DTR to “MARK” status in 5 seconds after occurrence of a paper
empty. It is necessary to install paper into the printer and press the ON LINE
BUTTON to light the ON LINE LAMP in order to recover from paper empty
status.
Machine Error
A machine error may be generated by paper jamming or when the printer is unable
to print data. When a machine error occurs the printer stops printing. In the X-ON/
X-OFF mode, the printer outputs an X-OFF signal immediately. At this time the
host computer can receive the printer status after transmitting an ENQ code to
printer. The printer goes OFF LINE and sets the DTR to “MARK” status within
5 seconds after the occurrence of Machine Error. It is necessary to turn the printer
power off and on again in order to recover from Machine Error.
STATUS
Parity
In DTR mode and X-ON/X-OFF mode parity check is done on vertical parity
only.
Framing Error
Framing Error occurs when SPACE signal is detected at STOP Bit time. Framing
error and vertical parity error will be indicated by printing “?”.