Paper Feed Motor Drive Circuit; Figure 2-23. Paper Feed Motor Drive Circuit Diagram - Epson 4003353 Service Manual

Paper Feed Motor Drive Circuit

2.3.2.4
The paper feed motor for this printer drives the following mechanisms:
Paper feed mechanism
Paper pickup mechanism
Pump mechanism
Driver IC SLA7041MS (XC14) drives the paper feed motor by a constant current. The operation
principle is same as the carriage motor drive circuit. But the driving method is different for paper
feed and the pump.
Table 2-9. Paper Feed Motor Drive Modes
Mode
Paper feed
Pump drive
PFSTB
P F V R F
PFHLD —

Figure 2-23. Paper Feed Motor Drive Circuit Diagram

Rev. A
Phase Excitation
2-2 phase or 2WI -2 phase
2-2 phase
SLA7041 MS
41
44
14
54
9
I
I
E
NPN Tr
B
Operating Principles
Drive Frequency
391 or 1600 pps
300 or 1800 pps
1
A
8
11
18
+
1
2
3
4
5
—
2-19