Citizen CBM-202PC-04, User Manual

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CBM-202PC-04 User’s Manual
16 CITIZEN
4.7 Head-up Detection Circuit
Print head up/down is detected by a head-up sensor built in the printer so that the printer will
not be energized on with the head up. The circuit is "opened" when the print head is up, and
"closed" when down.
When the print head is up, HEADUP (Pin 88) of the CPU is turned to "High," and if the printer
is printing, it will immediately stop printing and output an error. It resumes printing when
the print head is down.