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CBM-202PC User’s Manual
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CITIZEN
3.6 HEAD-UP DETECTION CIRCUIT
Up/down state of the head is detected so that no power is supplied in head-up state, with the head-up sensor
installed in the printer. With head UP, it becomes "OPEN". With head DOWN, it becomes "CLOSE".
In head UP state, CPU's HEADUP (Pin 88) gets "HIGH", where printing is immediately stopped with error
output if it is while in print operation. Printing is resumed when it becomes head DOWN.