Epson 890N - FX B/W Dot-matrix Printer User Manual

EPSON FX-890/2190 Revision B
Operating Principles Overview 44
2.1 Overview
This printer is divided into several main components for easy removal and repair. The
main components are:
 C524MAIN: Control board
 C524PSB/PSE/PSH: Power supply board
 C524PNL: Operation panel board
 Printer mechanism: Printhead, Carriage, Ribbon mechanism, Platen
gap adjustment mechanism, Paper feed
mechanism, Release mechanism
 Housing: Upper case, Lower case, Rear sheet guide,
Knob, Printer cover
 C524MAIN Board
The C524MAIN board consists of 2in1ASIC(CPU), EEPROM, PROM, DRAM,
PF Motor Driver IC, CR Motor Driver IC driver elements, and so on.
Figure 2-1. C524MAIN Component

C524 PSB/PSE/PSH Board
The C524 PSB/PSE/PSH power supply board consists of Transformer, Switching FET,
Regulator IC, Diode bridge, Fuse, Photo-coupler, and so on.
Figure 2-2. C524 PSB/PSE/PSH Component
EEPROM
Print Head
Driver
CR Motor Driver IC PF Motor Driver IC
DRAM
2in1ASIC
E01A29CA
PROM
CN1
Switching FET
Photo-coupler
Transformer
CN2
Diode Bridge

Epson 890N - FX B/W Dot-matrix Printer Specifications

General

Brand	Epson
Model	890N - FX B/W Dot-matrix Printer
Category	Printer
Language	English