Epson Stylus COLOR 440 Service Manual page 62

EPSON Stylus COLOR 440, 640, and 740
P-ROM
(IC3)
D-RAM
(IC4)
D-RAM
(IC5)
M-ROM
(IC6)
C90A05
CN2 Serial
CN3 USB
Head
CN1 Parallel
Buffer
(IC9)
E05B588
(IC2)
(IC1)
Address
Data
Transceiver
(IC10)
Figure 2-19. C257 MAIN Board Block Diagram for Stylus COLOR 740
CN9 HD FFC
CR1
Batt1
Timer Common
Counter
Driver
(IC8) (IC14)
EEPROM
Reset IC
(IC7)
(IC9)
CN11
CN6
CN4
CN5
HP Sensor
PE Sensor
Chapter 2 Operating Principles
CR Motor
Q2&Q3
PF Motor
CN7
CN8
Motor
Motor
Driver
Driver
(IC11)
(IC12)
Motor
Driver
(IC13)
C209 PNL
ASF Sensor
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