Star Micronics TSP200 Manual

A SERVICE OF

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PRINCIPLES OF OPERATION

Fig. 2-9 Timing Chart

2-3. Feed-Motor Drive Circuit

The printer uses a 4-phase step motor (phase 1-2 excitation) to implement paper feed. The motor rotates through a certain

angle each time it receives a pulse from the drive circuit. The following diagram illustrates the excitation method. Figure

2-11 shows the feed-motor drive circuit.

Fig. 2-10 Motor Control by Phase 1-2 Excitation

Fig. 2-11 Feed-Motor Drive Circuit

1 2 3 4 5 6 7 8

1

2

3

4

ON

ON

ON

ON

ON

Step

Reverse Feed

Forward Feed

PB4

TP8

TP9

TP10

TP11

1

3

2

4

CN7

1

2

3

6

5

4

+24V

TR5

TA1

DT9

M-GND

IC1

CPU

tw

STB1

STB2

STB3

HD ON

(B)

BEO

(Q)

Trigger Retrigger Retrigger