Epson B-300 B-500DN B-508DN Service Manual


Accurate, clear and concise text, combined with detailed illustrations, lists of error code, instruction and diagrams, guide you through procedure of repair, remediate, maintenance and adjustments your copier, printer or scanner.
Present service manual Epson B-300 B-500DN B-508DN contain clear instructions and procedures on how to fix the problems occurring in your equipment.
The information contained in this repair manual is necessary for the repair, but also prevention, resulting in a longer life of your equipment.
Format of the manual: PDF, makes it easy to navigate, instant download and print. English language.
To see what contain, please read table of contents:

Chapter 1. PRODUCT DESCRIPTION
1.1 Features
1.2 Printing Specifications
1.2.1 Basic Specifications
1.2.2 Ink Cartridges
1.2.3 Maintenance Box
1.2.4 Print Mode
1.2.5 Supported Paper
1.2.6 Printing Area
1.3 Interface
1.3.1 USB Interface
1.3.2 Network Interface (B-500DN/B-508DN only)
1.4 General Specifications
1.4.1 Electrical Specifications
1.4.2 Safety Approvals (Safety standards/EMI)
1.4.3 Environmental Conditions
1.4.4 Durability
1.5 Control Panel
1.5.1 Operation Buttons
1.5.2 LEDs and LCD Indications
1.6 Status Sheet

Chapter 2. Operating Principles
2.1 Overview
2.1.1 Printer Mechanism
2.1.2 Printhead
2.1.3 PG Setting
2.2 Motors and Sensors

Chapter 3. Troubleshooting
3.1 Overview
3.1.1 Troubleshooting on Motors and Sensors
3.2 Error Messages and Possible Causes
3.2.1 List of Error Indications
3.3 Troubleshooting
3.3.1 Troubleshooting by Error Message
3.4 Troubleshooting by Symptom (no error indications)
3.4.1 Troubleshooting Printer Mechanism Problems
3.4.2 Troubleshooting Electrical Problems
3.4.3 Troubleshooting Ink Supply / Waste Ink Problems
3.4.4 Troubleshooting I/F-related Problems
3.5 Troubleshooting Duplex Unit Problems

Chapter 4. Disassembly and Assembly
4.1 Overview
4.1.1 Precautions
4.1.2 Tools
4.1.3 Screws
4.1.4 Work Completion Checklist
4.1.5 Preparation for Disassembling
4.1.6 Orientation Definition
4.2 Disassembly Flowchart
4.3 Basic Operations
4.3.1 Releasing Carriage Lock
4.3.2 Handling Ink Supply Parts
4.3.3 Handling Ink System Parts
4.3.4 Protection for Transportation
4.4 Consumables & Accessories
4.4.1 Ink Cartridge
4.4.2 Maintenance Box Assy
4.4.3 Cassette Assy
4.4.4 Rear Cover / Duplex Unit
4.5 Removing Exterior Parts
4.5.1 IC Holder Cover
4.5.2 Cover Ink Eject Box
4.5.3 Front ASF Cover Assy
4.5.4 Stacker Assy / Paper Support
4.5.4.1 Stacker Assy
4.5.4.2 Paper Support
4.5.5 Panel Unit
4.5.6 Cover Printer Assy /Housing Front Assy
4.5.6.1 Cover Printer Assy
4.5.6.2 Front Housing Assy
4.5.7 Connector Cover / Upper Housing
4.5.7.1 Connector Cover
4.5.7.2 Upper Housing
4.5.7.3 Cover Open Sensor
4.6 Removing the Circuit Boards
4.6.1 Main Board
4.6.2 Network Board (B-500DN/B-508DN only)
4.6.3 AID Board
4.6.4 Disassembling the Panel Unit
4.6.4.1 Panel Board
4.6.4.2 Optical Tube, Buttons
4.6.5 Power Supply Unit
4.7 Removing the Printer Major Components
4.7.1 Removing the Ink System Components
4.7.1.1 IC Holder Assy
4.7.1.2 Sub-B Board
4.7.1.3 CV Drive Assy
4.7.2 Lower Housing
4.7.3 Disassembling the Carriage Components
4.7.3.1 Printhead
4.7.3.2 CR Scale
4.7.3.3 APG Assy / Sub Board
4.7.3.4 ASF Encoder Assy
4.7.3.5 CR Motor
4.7.3.6 Carriage Assy
4.7.4 Disassembling the Paper Loading Mechanism Components
4.7.4.1 Rear ASF Assy
4.7.4.2 RH Sensor / RP Sensor
4.7.4.3 ASF Motor Assy
4.7.4.4 Planet Lock Assy
4.7.4.5 ASF Sub Encoder
4.7.4.6 Retard Transfer Assy
4.7.4.7 FASF Retard Assy
4.7.4.8 LD Roller / Retard Roller
4.7.4.9 Paper Guide Bank Assy
4.7.4.10 PEF Sensor
4.7.4.11 PER Sensor
4.7.4.12 Rear Paper Guide / PE Sensor
4.7.4.13 Pick-up Assy
4.7.5 Disassembling the Paper Feed Mechanism Components
4.7.5.1 PF Motor
4.7.5.2 PF Encoder
4.7.5.3 EJ Frame Assy
4.7.5.4 Left/Right Upper Paper Guide
4.7.5.5 Front Paper Guide & EJ Roller Assy
4.7.5.6 PF Roller Assy
4.7.6 Disassembling the Ink System Components
4.7.6.1 Ink System
4.7.6.2 EJ Waste Ink Assy
4.7.6.3 EJC Sensor

Chapter 5. ADJUSTMENT
5.1 Adjustment Items and Overview
5.1.1 Servicing Adjustment Item List
5.1.2 Required Adjustments
5.2 Adjustment by Using Adjustment Program
5.2.1 Top Margin Adjustment (Rear/Front)
5.2.2 Bi-D Adjustment
5.2.3 First Dot Position Adjustment (Front/Rear)
5.2.4 PW Adjustment
5.2.5 PF Adjustment (Rear/Front)
5.2.6 Head angular adjustment (TBD)
5.2.7 AID inspection
5.2.8 Printer Mechanism Operation Check
5.2.9 MAC Address Setting (B-500DN/B-508DN only)
5.3 Adjustment without Using Adjustment Program
5.3.1 PG Adjustment
5.3.2 PF Belt Tension Adjustment
5.3.3 FD Belt Tension Adjustment

Chapter 6. MAINTENANCE
6.1 Overview
6.1.1 Cleaning
6.1.2 Service Maintenance
6.1.2.1 Printhead cleaning
6.1.2.2 Service Call
6.1.3 Lubrication

Chapter 7. APPENDIX
7.1 Connector Summary