EPSON Stylus PHOTO 810/820/830

Revision B

2.2.2.1 Main Elements

Table 2-8shows the function of the each main elements on C418 Main/Maia-B board.

 

 

Table 2-8. Main elements

 

 

 

 

IC

Location

 

Function

 

 

 

 

 

CPU

 

 

CPU mounted on the MAIN board is driven by clock

E01A21CB

IC1

 

 

frequency 48 MHz, 24MHz and controls the printer.

(E01A21CA)

 

 

 

 

 

 

 

 

 

 

DRAM

IC4

 

Bus= 16 bit, 4Mbit DRAM

 

 

 

 

 

 

 

1kbit EEPROM

EEPROM

IC3

 

Default value setting

 

 

 

Parameter backup

 

 

 

 

Reset IC

 

 

Reset IC

IC2

 

• For +5V; reset when +4.2V is detected

BN6150F-E2

 

 

 

• For +42V, reset when +36.3 V is detected

 

 

 

 

 

 

 

Common Driver

IC19

 

Head drive control HIC

E09A29LA

 

Generates head common voltage.

 

 

 

 

 

 

 

Motor Driver

IC10/IC11

 

PF/CR motor drive IC

(LB1946-K)

 

 

 

 

 

 

 

 

 

 

Parallel I/F IC

IC7

 

IEEE1284 parallel I/F transceiver IC.

74LVX1612B4

 

 

 

 

 

 

 

 

 

 

Operating Principles

Electrical Circuit Operating Principles

48