Fig. 2.19 Driver Circuit - Epson MX-80 Technical Manual

Fig. 2.18 shows the phase relationship between the timing signal (PTS) and the reset sig-
nal (RS).
Reset signal (RS)
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Timing signal
CPTS)
5V
T1 T2 T4 T5 T6 T7 T8
,
Home position of print head
Fig. 2.18 Timing and Reset Signals
(8) Driver circuit
The driver circuit amplifies very small signals for the carriage and paper feed stepper
motors to supply the currents necessary for driving the stepper motors, and also deter-
mines the pulse duration for energizing the print head solenoid. Fig. 2.19 shows the
driver circuit.
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