Epson STYLUS 3000 Service Manual

EPSON Stylus COLOR 3000
Rev. A
2-1
5
2.3.2

MAIN Control Board
This printer uses  MAIN for the main control circuit board. It consists of the following:
 16-bit  H8S/2655 (IC5) Runs at 19.66 MHz
 2 gate arrays E05B33 (IC6) Manages interfaces, motors and printheads.
E05B45 (IC16)
 P-ROM, DRAM and MROM
 Drivers Produces common voltage for printheads
Drives motors.
Table 2-8 and Figure 2-15 show the allocated functions for major components and the main control circuit
block diagram, respectively.
IC Location Function
CPU IC5
 16-bit 
 Runs at 19.66 MHz
 Controls the printer at the gate arrays IC5 and IC6
according to the program in P-ROM.
 Monitors the printhead temperature.
Gate Array IC16  Controls the I/F for the control panel.
 Controls the  motor.
 Manages the sensors.
IC6  Controls the parallel I/F.
 Controls the serial I/F.
 Controls Type- $ I/F.
 Controls the  motor.
 Controls the pump motor.
 Controls black and color printheads.
DRAM IC12
 Manages buffers, work area in the  %
SRAM IC14, IC28  Manages input buffer.
C.G. ROM IC11  Manages C.G. (Character Generator).
P-ROM IC13  Manages printer control program.
Optional ROM
IC7, IC10
 For optional fonts and  (not attached as a
standard item.)
EEPROM IC1  Stores values for the default settings and other
values.
Timer counter IC IC2  Manages timers for the ink system.
Reset IC IC9
 Outputs a reset signal to the logic line (+5  ).
IC3
 Outputs a reset signal to the power line (+42  ).
Common driver IC IC22  Produces common voltage for the black printhead.
IC23  Produces common voltage for the color printhead.
Driver IC17
 Drives the  motor.
IC18  Drives the pump motor.
IC25
 D/A converter for  motor control
IC19, IC20
 Drives the  motor.
Table 2-8. Location and function of the Major Components

Epson STYLUS 3000 Specifications

General

Brand	Epson
Model	STYLUS 3000
Category	Printer
Language	English