Star Micronics TSP200 Auto-Cutter Drive circuit on TSP242-24/120/230 only, Cover-Open Detector

PRINCIPLES OF OPERATION

3Head-Up Detector

This detector senses the position of the thermal printhead. The leaf switch closes when the printhead is in contact with the platen, and opens when the printhead is separated from the platen.

IC1

CPU

P44

+5V

CN7

Leaf Switch

2

1

Fig. 2-20 Head-Up Detector

4Cover-Open Detector

This detector senses whether the upper cover is open or closed. The leaf switch closes when the cover closes, and opens when the cover opens.

IC1

CPU

P46

+5V	CN1
	Leaf Switch
	1

2

Fig. 2-21 Cover-Open Detector

3-4. Auto-Cutter Drive circuit (on TSP242-24/120/230 only)

The TSP242 includes a guillotine-type cutter. The motor rotation direction determines whether the cutter executes a full cut or a partial cut. (The partial cut leaves paper attached at one point.)

Note that Memory Switch 2 Bit 8 must be set ON to enable use of the cutter.

IC3

OUT

P42

P40

P41

IC1

CPU

VCC

							VCC
									CN9
										Switch
							2
VM VM		VM						3
						TA2	GND GND
				10
						TH3C10
	6	B E C				7	4			Motor
	2	B			C	3
	8	B			C	9	5			M
	4	B			C	5
			E
				1

M-GND

Fig. 2-22 Auto-Cutter Drive Circuit

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