Paper feed motor drive circuit, Table 2-9. paper feed motor drive modes – Epson 4003353 User Manual
Page 49
Advertising
Color
Manual
Operating Principles
2.3.2.4
Paper Feed Motor Drive Circuit
The paper feed motor for this printer drives the following mechanisms:
■
Paper feed mechanism
■
Paper pickup mechanism
■
Pump mechanism
Driver SLA7041MS
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
Phase Excitation
Drive Frequency
Paper feed
2-2 phase or 2WI -2 phase
391 or 1600
Pump drive
2-2 phase
300 or 1800
SLA7041 MS
PFSTB
41
44
A
P F V R F
●
A
14
54
●
B
PFHLD —
9
I
●
I
B
NPN Tr
E
1
1
8
2
11 3
18 4
5
+
—
Figure 2-23. Paper Feed Motor Drive Circuit Diagram
Rev. A
2-19
Advertising