Paper-Out Detection And Form Override Function - Epson LQ-870 Service Manual

1.6.3 Paper-Out Detection and Form Override Function

The paper-out detector is attached to the printer mechanism. When the paper-out detector senses a
paper end, the printer first performs a form override. If paper loading fails, the BUSY signal goes HIGH,
the PAPER OUT indicator light comes on, the interface PE signal becomes HIGH, the /ERROR signal
becomes LOW, and the printer enters the PAUSE condition.
The form override function ignores the paper out and allows the printer to print additional lines after
a paper out is detected. After you load paper and press the PAUSE button, the printer returns to the
RUNNING condition and printing begins again.
The printer enters the paper-out state only when a paper out is detected after the printer performs a
paper loading operation.
1.6.4 Error Conditions
If any of the following error conditions are detected, the printer automatically enters the PAUSE
condition.
If the parallel interface is selected, the following interface signals are output to indicate the error and
to stop data transmission:
1.6.5 Buzzer Operation
The buzzer sounds under the following conditions:
intervals.)
second intervals.)
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