Epson Stylus Pro 3800 - Outline of Circuit Boards; Main Board

Epson Stylus Pro 3800/3800C/3850/3880/3885/3890 Revision C
OPERATING PRINCIPLES Outline of Circuit Boards 58
2.9 Outline of Circuit Boards
2.9.1 Main Board
This section provides a summary of the main board (Epson Stylus Pro 3800/3800C/
3850: C653 MAIN / Epson Stylus Pro 3880/3885/3890: CA61 MAIN) that controls the
whole of the printer system.
 Explanation of main elements on C635/CA61 MAIN Board
 Circuit block diagram
Figure 2-33. C635/CA61 MAIN Board Block Diagram
Table 2-8. Main Elements
Model Number Location Function
E01A68CB IC15 Customized ASIC
FlashROM IC4
Program storage
• Capacity: 16Mbit
DDR-SDRAM IC3/IC19
Various buffers, work areas
• Capacity: 256Mbit
• Number of pieces: two
RTC9824 IC9
RTC complex circuit
(Reset, timer, EEPROM complex IC)
E09A54RA IC11 Printer driver
A6628SEDT IC7/IC13 Motor driver
A6627STPT IC6 Motor driver
BCM5980A2KFBG IC10
Ethernet 10/100BASE-TX circuit
• Flash ROM (32Mbit), SDRAM (64Mbit x 2)
installed
Custom
ASIC
E01A68C
(IC15)
Custom
ASIC
E09A54RA
(IC11㧕
Ethenet 10/100BASE-TX
BCM5980A2KFBG(IC10)
A6628 (IC13)
A6627 (IC6)
DDR-SDRAM
(IC3)
RTC9824
(IC9)
Flash ROM
(IC4)
Flash ROM
(IC1)
CN40
CR Motor
CN43
ASF Motor
CN44
Ink Change Motor
A6628 (IC7)
CN45
Pressurizing Pump Motor
CN57
Release Motor
CN58
CN41
PF Motor
CN41
APG Motor
CN67
USB I/F 2.0
CN102
Network
CN69/70/
71/72
Print Head
Pump Motor
(IC19)
DDR-SDRAM
(IC5)
SDRAM
(IC8)
SDRAM