C211 Main Control Board - Epson Stylus COLOR 1520 Service Manual

EPSON Stylus &2/25 1520

2.3.2 C211 MAIN Control Board

This printer uses C211 MAIN for the main control circuit board. It consists of the following:
„16-bit CPU C90A02CB (IC7)
„2 gate arrays E05B33 (IC6)
„P-ROM, DRAM and MROM
„Drivers
Table 2-8 and Figure 2-19 show the allocated functions for major components and the main control circuit
block diagram, respectively.
Table 2-8. Location and function of the Major Components
IC
CPU
Gate Array
Gate Array
DRAM
DRAM
MROM
P-ROM
P-ROM
EEPROM
Timer counter IC
Common driver IC
Common driver IC
Driver
Driver
2-18
:Running at 19.66 MHz
:Controls interfaces, motors and printheads.
E05B34 (IC5)
:Produces common voltage for the motors and printheads.
Location
‰16-bit CPU
‰Run at 19.66 MHz
‰Controls the printer at the gate arrays IC5 and IC6
IC7
‰Controls the I/F for the control panel.
‰Controls the CR motor.
IC5
‰Detects the signals from the PE sensor, cover
‰Controls the parallel I/F.
IC6
‰Controls the serial I/F.
‰Controls Type-B I/F.
‰Controls the PF motor.
‰Controls black and color heads.
‰Controls the HP sensor and DE sensor.
‰Manages buffers, work area in the CPU, and
IC9
‰For image buffer. Expansion
IC10
‰24 Mbit
IC13
‰Manages C.G. (Character Generator).
‰Equipped only for the European version.
IC11
‰8Mbit
IC14
‰Printer control program
‰Manages C.G. (Character Generator).
‰Stores values for the default settings and other
IC2
‰Manages timers for the ink system.
IC3
‰Produces common voltage for the black head.
IC18
‰Produces common voltage f or the color head.
IC19
‰Drives the PF motor.
IC16
‰Drives the CR motor.
IC17
Function
according to the program in P-ROM.
open sensor and REL (Release) sensor.
stuck area.
values.
Rev. A