TSC TTP 246M - Head Open Sensor; Peel-Off Sensor

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TTP-246M/344M Bar Code Printer
Service Manual
3.11.4 Head Open Sensor
This is the see-through sensor. The HEAD SENS signal is "High" when print head opens;
The HEAD SENS signal is "Low" when the print head closes.
3.11.5 Peel-off Sensor
This is a reflective sensor. The PEEL SENS signal is high when there is label below the
sensor; the PEEL SENS signal is low when the label is taken away.