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Epson Stylus CX3700 Service Manual page 60

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EPSON Stylus CX3700/CX3800/CX3805/CX3810/DX3800/DX3850
The block diagram for the sensor circuit is shown below.
CN3
PE Sensor
CN4
Scanner HP
Sensor
SCN_HP
CN5
XHOT/
THM
THM
OPERATING PRINCIPLES
+3.3V
3
PEV
+3.3V_SN
2
GND
D5
1
PE
+3.3V
+3.3V_SN
PEV
3
GND
2
F20
1
+3.3V
A5
7
Figure 2-22. Sensor Circuit Diagram
Electrical Circuit Operating Principles
:
CPU
(IC8)
D13
DACDAT
A10
CO
B12
PE
CCLK
B11
CDIO
A11
CXRST
B10
EA_CR
A9
EB_CR
SCNHP
A16
EA_PF
B16
EB_PF
+3.3V
AN1
+3.3V_SN
+3.3V
5
CVDD
1
COI
6
CSCK
CN7
2
CSDA
CR
3
CRST
Encroacher
Sensor
CSIC
+3.3V_SN
11
ENCA
9
ENCB
PF Encoder
(P1)
A
A
VOA
VOB
VCC
GND
Revision A
60

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