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Signal
CHASSIS
Direction
BUSY
OUT
OUT
OUT
AUTO
IN
FEED
NC
NC
IN
A HIGH signal Indicates the
printer cannot receive data.
The signal goes HIGH in the
following cases:
character)
pressed
A HIGH signal indicates that
the printer is out of paper.
Pulled up to 5 V through
1 .O kQ resistance
When this signal is LOW, the
paper b automatically fed
one line after printing.
Printer's chassis ground,
which is isolated from the
Not used
ground level
When this level becomes
LOW, the printer controller is
reset to its state when the
power ls first turned on and
the print buffer Is cleared.
This level& normally HIGH; Its
than 50 us at the receiving
Appendix A-9
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