Epson Stylus Scan 2000 - Page 54

EPSON Stylus Scan 2000
Revision A
Operating Principles
Electrical Circuit Operating Principles
53
The following figure shows the sensor circuits. Out of the data such as EPW with
IEEE-1284 Nibble mode to be returned to the host, the data to indicate ink
consumption is calculated and managed by the counter of the firmware. Therefore, it is
omitted here.
Figure 2-27. Sensor Circuitry
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
97
98
99
SWA0
SWA1
SWA2
IC2
E05B588
ASF
HPV
GND
HP
PEV
GND
PE
ASF
ASFV
GND
CN4
ASF
CN5
HP
CN6P
E