Specifications
EPSON Stylus Color 440/640/740 Revision A
Chapter 2 Operating Principles 77
Figure 2-37. PF (Pump) Motor Drive Circuit for Stylus Color 740
+5
M6252(IC16)
-
+
7
6
5
C90A05
(IC1)
112
DA1
D0
D1
D2
PHASE
REF
PFD
A3956(IC13)
OUTA
OUTB
VBB
VCC
Current
Detection
D0
D1
D2
PHASE
REF
PFD
A3956(IC13)
OUTA
OUTB
VBB
VCC
4
5
6
7
E05B588(IC2)
PFIB0
PFIB1
PFIB2
PFPHAB
PFIA0
PFIA1
PFIA2
PFPHAA
8
9
10
11
14
9
8
7
2
1
14
9
8
7
2
1
10
15
Rotor
A
/A
B
/B
1
3
2
4
CN8
10
15