Epson EPL-N2000 Service Manual page 89

Operating Principles
Table 2-1 lists the main components of the C207 MAIN board and their functions.
Table 2-1. Functions of Main Board Components
Component
MB86936 RISC CPU
SLAM
GG46833
RIT4 Plus
E05B28 ASIC
IOC2
E05B27 ASIC
Two 8 M-bit FONT
ROMs
Option 8M-Bit ROM
EEPROM
DRAM
PIC
E05B29 ASIC
C207 PROG Board
*1: IC9, 10, 11 ,12 are used in Europe.
*2: IC5 and IC 6 are used in the United States.
2-16
Location
IC1 The CPU, which operates at 47.6 MHz manages the
video controller operation.
IC39 This LSI contains the following functions:
IC37 This ASIC is a video controller for BiRIT and EMGT.
IC28, IC29 This ASIC contains the following functions:
IC15, IC16 These ROMs are font ROMs.
IC21 This ROM is local language ROM (font) option.
IC38 This 16K-bit EEPROM stores the followings:
1
IC9 - 12 * These DRAMs are used as the working area of the
elements such as the CPU, input buffer, and image
2
IC5, IC 6 *
buffer.
IC20 This ASIC contains following functions:
- 4M-bit Flash ROMs are mounted on the C207 PROG
board to store the control programs.
EPL-N2000 Service Manual
Function
DRAM management ( refresh control, RAS/CAS
control )
Wait controller
Interrupt controller
IC28: Parallel B interface
IC29: Parallel C interface
Mode type
Printer page counter value
Toner life counter value
SelecType setting
PCMCIA controller
LocalLanguage controller
Rev.A