Epson Stylus Scan 2000 - Page 60

EPSON Stylus Scan 2000
Revision A
Operating Principles
Electrical Circuit Operating Principles
59
Figure 2-31. PF (Pump) Motor Drive Circuit
PFIA0
PFIA1
PFIA2
PFPHAA
PFIB0
PFIB2
PFIA0
PFPHAB
8
9
10
11
4
5
6
7
E05B588(IC2)
+5
14
9
8
7
2
112
D0
D1
D2
PHASE
PFD
OUTA
OUTB
VBB
VCC
A3956(IC13)
10
15
10
14
9
8
7
2
1
REF
D0
D1
D2
PHASE
REF
PFD
OUTA
OUTB
DA1
VCC
A3956(IC13)
7
5
6
C90A05
(IC1)
Current
Detection
M6252 (IC1)
1
4
3
2
A
/A
B
/B
Rotor
CN8