Epson FX-980 Impact Serial Dot Matrix Printer Service Manual - PDF DOWNLOAD

Epson FX-980 Impact Serial Dot Matrix Printer Service Manual - PDF DOWNLOAD

FILE DETAILS:

Epson FX-980 Impact Serial Dot Matrix Printer Service Manual - PDF DOWNLOAD

Language : English
Pages : 72
Downloadable : Yes
File Type : PDF

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

Epson FX-980 Impact Serial Dot Matrix Printer Service Manual - PDF DOWNLOAD

Overview 9
Specifications 9
Features 9
Accessories 10
Hardware Specifications 11
Printing Specifications 11
Paper Handling 12
Paper Specifications 14
Ribbon Specifications 17
Electrical Specifications 17
Reliability 17
Safety Approvals 17
CE Marking 18
Physical Specifications 18
Firmware Specifications 19
Control Codes and Fonts 19
Printable Area 20
Interface Specifications 20
Parallel Interface (Forward Channel) 20
Parallel Interface (Reverse Channel) 21
Serial Interface 21
Operation Instruction 23
Errors 25
Bi-directional Adjustment Function 25
EEPROM Initialization 26
Main Components 27
C276 Main Board 27
C276 PNL Board 27
Operating Principles
Printer Mechanism Operations 29
Power Supply Operation 29
Control Circuit 30
Overview of the Control Circuit Operation 30
System Reset Circuit 32
Printhead Driver Circuit 33
CR Motor Driver Circuit 33
PF Motor Driver Circuit 35
EEPROM Control Circuit 35
Sensor Circuit 36
Disassembly and Assembly
Overview 38
Printer Disassembly and Assembly 38
Adjustment
Overview 45
Pre-operation for the Adjustment Program 45
Bi-D Adjustment 47
TPE Level Reset 48
Writing the User-characteristic Data 49
Troubleshooting
Overview 52
Troubleshooting Information 52
Printhead 52
Sensors 52
EPSON FX-980 Revision A
Motors 52
The Error codes with Indicators and Buzzer 53
Unit Level Troubleshooting 54
Repairing the C166 PSB/PSE Board 54
Repairing the C276 Main Board 54
Repairing the Printer Mechanism 56
Maintenance
Appendix
EEPROM Address Map 60
Connector Summary 64
Component Layout 66
Circuit Diagrams 69

DESCRIPTION:

Epson FX-980 Impact Serial Dot Matrix Printer Service Manual - PDF DOWNLOAD

PREFACE:

• This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of FX-980.
• The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.

The chapters are organized as follows:

• CHAPTER 1. PRODUCT DESCRIPTIONS Provides a general overview and specifications of the product.
• CHAPTER 2. OPERATING PRINCIPLES Describes the theory of electrical and mechanical operations of the product.
• CHAPTER 3. DISASSEMBLY AND ASSEMBLY Describes the step-by-step procedures for disassembling and assembling the product.
• CHAPTER 4. ADJUSTMENTS Provides Epson-approved methods for adjustment.
• CHAPTER 5. TROUBLESHOOTING Provides the step-by-step procedures for troubleshooting.
• CHAPTER 6. MAINTENANCE Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product.

APPENDIX Provides the following additional information for reference:

• EEPROM Address Map• Connector Pin Assignments• C276 Main Board / C244 PSH Board Component Layout• C276 Main Board / C244 PSH Board Circuit Diagram

G.B 01/03/25