Specifications

EPSON Stylus Color 440/640/740 Revision A
Chapter 2 Operating Principles 73
Figure 2-32. Head Drive Circuit for Stylus Color 440
H8D2813(IC6)
XOVM
CTB
COM
DTB
GND
GND
25
1
20
+5
F1
+42
22
23
VHV
VHV
+5
GND
GND
GND
GND
GND
GND
VDD
15
14
12
10
8
6
4
COM
COM
COM
19
21
20
GND2
GND2
GND2
16
18
17
E05B44(IC2)
VHCTL
2
4
6
199
CCO
LAT
SI1
SI2
CLK
NCHG
BCO
THM
1
2
5
9
7
11
3
13
200
198
SW7
SW8
90
LP
99
100
BIEN
BHSO
YCMHSO
97
96
YCMIEN
ICLK
BCHCLK
/NCHG
93
92
89
TMP95C061(IC1)
AN0
20
CN8
CHG
KC1
ND1
ND2
MD1
MD2
Data
CLK
/STB
/CLR
VRF
VK
CHG
KC1
ND1
ND2
MD1
MD2
Data
CLK
/STB
/CLR
VRF
VK
VHCTL
Vcc