This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. 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
Manual Configuration
This manual consists of six chapters and Appendix
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.TROUBLESHOOTING
Describes the step-by-step procedures for the troubleshooting
CHAPTER 4.DISASSEMBLY / ASSEMBLY
Describes the step-by-step procedures for disassembling and assembling the product
CHAPTER 5.ADJUSTMENT
Provides Epson-approved methods for adjustment
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:
• Connector pin assignments
• Electric circuit boards components layout
• Electrical circuit boards schematics
• Exploded diagram & Parts List
CONTENTS
Chapter 1 Product description
1.1 Features
1.2 Specifications
1.3 Adding Paper Guide Roller Unit
Chapter 2 Operating Principles
2.1 Feature
2.1.1 Operating Principles of Printer Mechanism
2.1.1.1 Printing Mechanism
2.1.1.2 Carriage Mechanism
2.1.1.3 Paper Feed Mechanism
2.1.1.4 Upper Surface Sensor Mechanism
2.1.1.5 Paper Return Mechanism
2.1.1.6 Lifter Gear Train Mechanism
2.1.1.7 Hopper 5mm Down Mechanism
2.1.1.8 Sub Roller Gear Train Mechanism
2.1.1.9 Gear Train Change with Hopper installed
2.1.1.10 Ink Engage/Disengage Mechanism
2.1.1.11 PG Disengage Mechanism
2.1.1.12 Ink Valve Mechanism
2.1.1.13 Friction Release Mechanism
2.1.1.14 Gear Train Block Diagram
2.1.2 Outline of Electrical Circuit
2.1.2.1 C300 PSB Board
2.1.2.2 C300 DRV Board
2.1.2.3 C300 Main Board
Chapter 3 Troubleshooting
3.1 Features
3.1.1 Problems relating to the printer mechanism
Chapter 4 Disassembly and Assembly
4.1 Overview
4.1.1 Precautions
4.1.2 Tools
4.1.3 Screws
4.2 Disassembly
4.2.1 Housing Upper Removal
4.2.2 Housing Front Unit Removal
4.2.3 Mechanism Unit Removal
4.2.4 Waste Ink Pad Removal
4.2.5 MB Rear Unit Removal
4.2.6 Disassembling the Mechanism
4.2.6.1 Discharge Brush Removal
4.2.6.2 Paper Guide Assembly, Cover Removal
4.2.6.3 Print Head Removal
4.2.6.4 MB Front Unit Removal
4.2.6.5 Fan Assembly Removal
4.2.6.6 PS Unit Removal
4.2.6.7 Motor Assembly, PF Removal
4.2.6.8 Motor Assembly, CR Removal
4.2.6.9 Motor Assembly, ASF Removal
4.2.6.10 Carriage Unit Removal
4.2.6.11 Frame, Main, Paper Eject Removal
4.2.6.12 Paper Guide Upper Unit Removal
4.2.6.13 Pump Frame Removal
4.2.6.14 Frame, Main, PF Removal
4.2.6.15 ASF Unit Removal
4.2.6.16 Upper Surface Sensor Removal
4.2.6.17 PE Sensor Removal
4.2.6.18 PR Sensor Removal
4.2.6.19 HP Sensor Removal
4.2.6.20 Cable Assembly, Sensor FPC Removal
4.2.6.21 Interlock Assembly Removal
4.3 Disassembly and assembly for gear train
4.3.1 Disassembly of Gear Train
4.3.2 Assembling Gear Train
4.4 Disassembly and assembly for ASF Unit
4.4.1 Disassembly of ASF Unit
4.4.2 Assembling ASF Unit
Chapter 5 Adjustment
5.1 Outline
5.1.1 Adjustment Items
5.1.2 Adjustment Tools
5.1.3 Adjustment with the Service Program
5.1.4 Installing the Service Program
5.1.5 Starting the Service Program
5.2 Sequential Service Program by Repair Item
5.2.1 Functions
5.2.2 Adjustment Items
5.2.3 Nozzle Check
5.2.4 Head Inclination Adjustment
5.2.5 Head Height Adjustment
5.2.6 Head Gap Adjustment
5.2.7 Print Start Position Adjustment
5.2.8 Bi-D Adjustment
5.2.9 Head ID Input
5.2.10 Ink Charge
5.2.11 PG Adjustment
5.2.12 Protection Counter Clear
5.2.13 Initial Settings Value Input
5.3 Individual Adjustment Service Program
5.3.1 Functions
5.3.2 Head ID
5.3.3 Head Inclination / Head Height
5.3.4 Head Gap
5.3.5 Print Start Position
5.3.6 Bi-D
5.3.7 USB ID
5.3.8 Head Cleaning
5.3.9 Ink Charge
5.3.10 Refurbishment for DOA
5.3.11 Protection Counters
5.3.12 Super A3 Plain Paper Printing
5.3.13 EEPROM Data
5.3.14 Tray Switch Check
5.4 PG Adjustment
5.5 Head Inclination Adjustment
5.6 Head Height Adjustment
5.7 Paper Detector Position Adjustment
Chapter 6 Maintenance
6.1 Cleaning
6.2 Maintenance
6.2.1 Head cleaning
6.2.2 Maintenance Request
6.3 Lubrication
Chapter 7 Appendix
7.1 Connector summary
7.1.1 Major Component Unit
7.1.2 Pin Assignments
7.1.3 EEPROM Address Map
7.2 Component Layout
7.3 Circuit Diagram
7.4 Exploded Diagram
7.5 Parts List
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