Paper Feed Motor Drive Circuit - Epson LX-HOO Technical Manual

The auto loading function is valid under the following conditions:
When the printer is OFF LINE.
Just after the signal from the paper end sensor changes from LOW to HIGH. (The leading edge of
the signal is checked for.)

2.4.6.4 Paper Feed Motor Drive Circuit

Figure 2-28 shows the paper feed motor drive circuit.
(3B)
CPU
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3
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The paper feed motor drive circuit is a constant voltage switching circuit (unipolar drive), which is the
same as the carriage motor drive circuit. When output port PF of the E05A03 is HIGH, voltage is applied
to the motor coil. When PA2 of the CPU is HIGH, +24 V is applied to PFCOM. When it is LOW, +5
V is applied to PFCOM.
al 7
+ 2 4 + 5
RI
5
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5.6K
Fig. 2-28. Paper Feed Motor Drive Circuit
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D3 9
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REV.-A