Epson Stylus Photo R800 - Page 35

EPSON Stylus Photo R800 Revision A
OPERATING PRINCIPLES Electrical Circuitry Operating Principles 36
The following is the block diagram of the C550 MAIN control board.
Figure 2-15. C550 MAIN Control Board Block Diagram
CPU-ASIC
2 in 1
(IC14)
Data
Address
IEEE 1394
CN3
IEEE 1394
(IC1)
PROM
(IC4, IC15)
SDRAM
(IC12)
EEPROM
(IC3)
USB
CN2
Cutter Unit
CN6
Motor
Driver
(IC5)
Head
Driver
(IC7)
Q13, Q14
CN4
PF Encoder Sensor
Print Head
CR Encoder Sensor
CR Motor
CN10
CSIC Board
CN8
CN7
C550 Panel Board
C550 PSB/PSE Board
Reset
(IC13)
Reset
(IC16)
CN4
PW Sensor
Ink Mark Sensor
DAC
(IC2)
PF Motor
APG Motor
ASF Motor
Pump Motor
CN5
Relay Board
PE Sensor
PG Release Sensor
ASF Sensor
APG Sensor 1
APG Sensor 2
CN11
CN12
CN13
CN14
Motor
Driver
(IC6)
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