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 IC SLA7041MS (IC14) drives the paper feed motor by a constant current. Its principle of
operation is same as for 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 2 W1-2 phase
391 or 1600 pps
Pump drive
2-2 phase
300 or 1800 pps
E05A96
(IC2)
4 1
4 0
4 3
4 2
P F B
P F S T B
C L K A
5
1 6
2
1 3
P F A
SLA7041MS
(IC14)
C L K B
S T B A
S T B B
DA TA A
DA TA B
6
1 7
PFV RF
RE F A
RE F B
PFH LD
R S A
R S B
3
1 4
9
1 0
P FCLK
(PB8-PB13)
B
E
C
A
A
B
B
1
8
1 1
1 8
1
2
3
4
+3
5 V
5
(CN 7)
5 7
44-48, 39
NPN Tr
(Q25, 26)
Figure 2-22. Paper Feed Motor Drive Circuit Diagram
Stylus Pro XL
Operating Principles
REV.-A
2-19
Summary of Contents for Stylus Pro XL
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