Main Components; Main Control Board (C134 Main Board); Figure 1-9. C134 Main Board Component Layout - Epson Stylus 800 Service Manual

Terminal printer

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1.5 MAIN COMPONENTS

The main components of this printer are:

The C134 MAIN board is the main controller of the Stylus 800+. It takes charge of interfacing with

the host computer and processing received print data, as well as control of the whole printer

mechanism. This board consists of the following components

CPU (ICl)

Gate array (IC3)

Program ROM (IC4)

CG ROM (IC7/8)

RAM (n)

CR motor driver (IC13)

PF motor driver (QM1)

Program ROM (IC4

1-16

16-bit CPU ~141F-20)

19.6608 MHz operating clock

4M-bit mask ROM M40B21 (IC8 / for standard versicm)

Hybrid IC SMA7024ME

Constant current unipolar drive

Hybrid IC SMA6501

Constant voltage unipolar drive

I \

CR Motor Driver (IC13)

Rev. A

Table of Contents

Table of Contents

Stylus 800+