Epson 670 - page 24

Chapter 1 Product Description

Rev. A 1-1

7

Character tables :The standard vers ion has 11 character tables and the NLSP version has

20 charater tables, as shown in the following table.

Character table Bitmap font Scalable font

Standard version Italic table

PC437(US Standard Europe)

PC850(Multilingual)

PC860(Portuguese)

PC861(Icelandic)

PC863(Canadian-French)

PC865(Nordic)

Abicomp

BRASCII

Roman 8

ISO Latin 1

EPSON Draft

EPSON Roman

EPSON Sans Serif

EPSON Courier

EPSON Prestige

EPSON Script

EPSON OCR-B

EPSON Orator

EPSON Orator-S

EPSON Script C

EPSON Roman

EPSON Sans Serif

EPSON Roman T

EPSON Sans Serif H

NLSP version Italic table

PC437(US, Standard Europe)

PC850(Multilingual)

PC860(Portuguese)

PC861(Icelandic)

PC865(Nordic)

EPSON Draft

EPSON Roman

EPSON Sans Serif

EPSON Courier

EPSON Prestige

EPSON Script

EPSON OCR-B

EPSON Orator

EPSON Orator-S

EPSON Script C

EPSON Roman

EPSON Sans Serif

EPSON Roman T

EPSON Sans Serif H

PC864(Arabic) EPSON Draft

EPSON Roman (Not supported)

PC437 Greek

PC852(East Europe)

PC853(Turkish)

PC855(Cyrillic)

PC857(Turkish)

PC866(Russian)

PC869(Greek)

MAZOWIA(Poland)

Code MJK(CSFR)

ISO 8859-7 (Latin/Greek)

ISO Latin 1T(Turkish)

Bulgaria(Bulgarian)

Estonia(Estonia)

PC744(LST 1283:1993)

ISO 8859-2

PC866 LAT.(Latvian)

EPSON Draft

EPSON Roman

EPSON Sans Serif

EPSON Courier

EPSON Prestige

EPSON Script

(Not supported)

PCAPTEC(Arabic)

PC708(Arabic)

PC720(Arabic)

PCAR864(Arabic)

EPSON Draft(Arabic)

EPSON Naskh

EPSON Kufi

(Not supported)

Hebrew7 *1

Hebrew8 *1

PC862(Hebrew) *1

EPSON Draft(Hebrew)

EPSON Miriam

EPSON David

(Not supported)

Note *1) These fonts are not s elected in the default setting mode.

Note)

ESC R command is effective on the character tables with bold weight.

Table 1-18. Character Tables

Contents

Main NOTICE Copyright 1997 by SEIKO EPSON CORPORATION Nagano, Japan PRECAUTIONS WARNING CAUTION WARNING CAUTION PREFACE Page Page Chapter 1 Product Descriptions 1.1 Specifications 1.1.1 Features Page 1.2 Hardware Specifications 1.2.1 Printing Method 1.2.2 Printing Specifications Rev. A 1- 1.2.3 Paper Handling Specifications 1.2.4 Paper Specification Rev. A 1- Note1) Note3): Note2): Note2): Page Page 1.2.5 Printable Area Rev. A 1-11 Note *1) Printable Area Printable Area BM 1.2.6 Ribbon Cartridge 1.2.7 Input data buffer Note*) 1.2.8 Electrical Specification 1.2.9 Reliability 1.2.10 Environmental Condition 1.2.11 Safety Approvals 1.2.12 CE Marking 1.2.13 Acoustic Noise 1.3 Firmware Specification 1.3.1 Control Codes and Fonts Page 1.3.2 Interface Specification 1.3.2.1 Parallel interface (Forward channel) Page 1.3.2.2 Parallel Interface (Reverse channel) Note*): Rev. A 1-21 1.3.2.3 Optional Interface 1.3.2.4 Interface Selection 1.3.3 Prevention Hosts from Data Transfer Timeout 1.4 Operation 1.4.1 Control Panel 1.4.1.1 Usual Operation Page 1.4.1.2 Switches 1.4.1.3 Indicators(LED) 1.4.1.4 Buzzer 1.4.2 Default Setting Notes. 1.4.3 Bi-d Adjustment 1.4.4 Initialization 1.4.5 Errors 1-3 1.5 Main Components 1.5.1 C214 Main Board 1.5.2 C214PSB Board Page Chapter 2 Operating Principles Rev. A 2-1 2.1 Printer Mechanism Operation 2.1.1 Printing Mechanism Page 2.1.2 Carriage Mechanism Page 2.1.3 Ribbon Advance Mechanism 2- 2.1.4 Paper Advance Mechanism 2.1.4.1 Paper Advance Mechanism 2.1.4.2 Paper Advance Detector Mechanism Page 2.1.4.3 Release Lever Mechanism Release Lever Tractor Gear Roller, PF Drive Tractor Transmission Gear 2.1.5 Platen Gap Adjustment Rev. A 2-11 2.2 Power Supply Operation 2.2.1 Power Supply Circuit 2.2.1.1 Power Supply Overview 2.2.1.2 Power Supply Circuit Operation Rev. A 2-1 2.2.2 Control Circuit 2.2.2.1 Operating Principles of the Control Circuit 2.2.2.2 EEPROM Control Circuit 2.2.2.3 System Reset Circuit 2.2.2.4 Power Off Detector Circuit 2.2.2.5 Print Head Driver Circuit 2.2.2.6 CR Motor Driver Circuit 2.2.2.7 PF Motor Driver Circuit 2.2.2.8 Operation Panel Control Circuit Page Chapter 3 Disassembly and Assembly Page 3.1 Overview 3.1.1 Precautions for Disassembling the Printer 3.1.2 Tools WARNING 3-2 3.1.3 Service Check After Repair 3.1.4 Specifications for Screws 3-4 3.2 Printer Disassembly and Assembly Figure 3-1. Disassembly Flowchart The flowchart below show you the basic order for disassembly. Before disassembling any part of the printer, note the warnings in Section 3.1.1. START 3.2.1 HOUSING, UPPER Removal 3-6 3.2.2 Printer Mechanism Removal 3.2.3 C214 MAIN Board Removal 3.2.4 C214 PSB/PSE Board Removal 3.2.5 EP-ROM Replacement CHECK POINT 3.2.6 Printhead Removal 3.2.7 Ribbon Mask Removal 3.2.8 PAPER EXIT ASSY. Removal 3.2.9 Ribbon Mask Holder Removal 3.2.10 PW Detector (Top) Removal 3.2.11 MOTOR, CR Removal 3.2.12 Carriage Assy. Removal CHECK POINT Page 3.2.12.1 RATCHET, RD Removal 3.2.13 PAPER GUIDE Removal Page Chapter 3 Disassembly and Assembly Rev. A 3-21 3-22 3.2.14 Platen Removal 3.2.15 MOTOR, PF Removal Page 3.2.19 DETECTOR, PE, FRONT Removal 3.2.20 DETECTOR, PE, REAR Removal 3.2.21 LEVER, RELEASE Removal 3.2.22 Tractor ASSY. Removal Page Rev. A 4-1 4.1 Adjustment Overview Note*2) Note*1) 4.1.1 Required Adjustments 4.1.2 Required Adjustment Tools 4.2 Adjusting and Resetting the Printer Do not rotate the platen roller during this adjustment. 4.2.1 Platen Gap Adjustment Rev. A 4- 4.2.2 Factory Setting Page Rev. A 4- 4.2.3 Bi-d Adjustment Page Page 5.1 Overview 5- 5.2 Unit Level Troubleshooting Page Page Page Page Rev. A 5- Page View A R F R L 1-24 :Wire Number C :Common Terminal T:Thermistor Terminal Note*) Rev. A 5-11 5.3 Repairing the Power Supply Circuit Board Page Page 5.4 Repairing the Main Board Page Page 5.5 Repairing the Printer Mechanism Page Page 6.1 Preventive Maintenance Page Appendix A.1 Connector Summary A- Rev. A A- A- Page Page Page Page Page Page Page Page Page A-1 Page A.5 Dimension and Weight EPSON OVERSEAS MARKETING LOCATIONS As of September, 1996