Paper-Feed Motor Drive Circuit - Epson LX-810 Technical Manual

Paper-Feed Motor Drive Circuit

2.2.4.3
The paper-feed motor drive circuit is shown in Figure 2-40. The paper-feed motor is a step motor which
can utilize 2-2 phase excitation. When the paper-feed signal PC2 is set to HIGH, Q20 and Q 16 are turned
on, and +24 V is supplied to the motor. When the
via resistor R42 and diode D6, to hold the motor.
CPU
(2C)
19
GA
E 0 5 3 0
(3 B)
8
9
10
RI 16
33K
Figure 2-40. Paper-Feed Motor Drive Circuit
paper-feed motor
R36
1
2-37
is not driven, + 5 V is supplied,
10
9
12
8
11
7
GP
REV.-A
PF A
PF B
PF C
PF D