Epson Stylus Color 640 Service Manual page 79

EPSON Stylus Color 440/640/740
E05B43
(IC2)
CRA0
CRA1
CRA0
CRB1
CRAPH
CRBPH
MTBV0
MTBV1
MTBV2
MTBV3
MTBV4
MTAV0
MABV1
MTAV2
MTAV3
MTAV4
Chapter 2 Operating Principles
75
76
75
73
77
74
60
61
62
63
64
+5
65
66
67
70
71
+5
Figure 2-39. Carriage Motor Drive Circuit for Stylus Color 640
UDN2917
CN5
(IC15)
A
2 6
I10
Out1A
1 3
I11
Out1B
/A
18
23
Out2A
I20
21
24
I21
Out2B
43
PH1
B
26
PH2
/B
44
Vref1
25
Vref2
1
3
Rotor
2
4
Revision A
79