Service manual

EPSON Stylus Photo R280/R285/R290 Revision B
Chapter 2 Operating Principles 2.2 Electrical Circuit Operating Principles 25
2.2.3 Circuit Block Diagram
Figure 2-3. Circuit Block Diagram for R280/R285/R290
Data
Address
Data
Address
CN11
CN6
PE Sensor
CPU-ASIC
(IC5)
Flash-ROM
(IC1)
Motor Driver
(IC8)
SDRAM
(IC2)
RESET IC
(IC3)
EEPROM
(IC6)
Serial
Flash-ROM
(IC4)
USB
(CN1)
C691 Panel Board
C691 PSB/PSE Board
CR Motor
PF Motor
Print Head
CR Encoder Sensor
CN5
CN14
CN13
CN10
CN16
CN15
CN12
PF Encoder Sensor
CN8
CN3
CR contact module
Head Driver
(IC7)
QM1,QM2
CN4
CDR Guide Sensor
PW Sensor
CN7
APG Sensor
CN17
Cover Open Sensor
CDR Tray Sensor