Epson LX300+_1170 Service Manual LX 1170

• EPSON LX-300+/1170
• PRODUCT DESCRIPTION
  • 1.1 FEATURES
  • 1.2 SPECIFICATIONS
    • 1.2.1 Printing Specification
    • 1.2.2 Paper Feeding
    • 1.2.3 Electrical Specification
    • 1.2.4 Environmental Condition
    • 1.2.5 Reliability
    • 1.2.6 Ribbon Cartridge
    • 1.2.7 Safety Approvals
    • 1.2.8 CE Marking
    • 1.2.9 Printable Area
  • 1.3 Interface Specifications
    • 1.3.1 Parallel Interface (Forward Channel)
    • 1.3.2 Parallel Interface (Reverse Channel)
    • 1.3.3 Serial Interface
    • 1.3.4 Interface Selection
    • 1.3.5 Prevention Hosts from Data Transfer Time-out
    • 1.3.6 IEEE1284.4 protocol
  • 1.4 Operation
    • 1.4.1 Control Panel
      • 1.4.1.1 Switches
      • 1.4.1.2 LED
      • 1.4.1.3 Buzzer
    • 1.4.2 Functions
      • 1.4.2.1 Usual Operation
      • 1.4.2.2 Operation at Power-on
      • 1.4.2.3 Default Setting
      • 1.4.2.4 Bi-d. Adjustment
    • 1.4.3 Errors
  • 1.5 Control codes
    • 1.5.1 ESC/P2
    • 1.5.2 IBM 2390 Plus Emulation
    • 1.5.3 Bi-Directional Commands
      • 1.5.3.1 Reply Printer Status
      • 1.5.3.2 Packet commands
  • 1.6 Initialization
  • 1.7 Paper Specifications
  • 1.8 Physical Specifications
    • 1.8.1 Physical Specifications for LX-300+
    • 1.8.2 Physical Specifications for LX-1170
  • 1.9 Accessories
• Operating Principles
  • 2.1 Overview
  • 2.2 Printer Mechanism
    • 2.2.1 Printhead
      • 2.2.1.1 Buzzer Function
    • 2.2.2 Carriage Mechanism
      • 2.2.2.1 High speed skip method
    • 2.2.3 Ribbon Mechanism
      • 2.2.3.1 Ink Ribbon Shifting Mechanism
      • 2.2.3.2 Color Ribbon Driving Mechanism (Option)
    • 2.2.4 Platen Gap Adjustment Mechanism
    • 2.2.5 Paper Feed Mechanism
      • 2.2.5.1 Page Length Measurement
    • 2.2.6 Release Mechanism
    • 2.2.7 Other Special Functions
      • 2.2.7.1 Energy saving mode
      • 2.2.7.2 Quiet Mode
  • 2.3 Electrical Circuit Operating Principles
    • 2.3.1 MAIN Board Electric Circuit
    • 2.3.2 C294PSB / C294PSE Board
      • 2.3.2.1 Electric Circuit
• Troubleshooting
  • 3.1 Overview
  • 3.2 Troubleshooting
    • 3.2.1 Initialization Check
    • 3.2.2 Check Performance By Self-Check Function
      • 3.2.2.1 Indicator LED
    • 3.2.3 Identify Problems From Symptoms
    • 3.2.4 Unit and Parts Check
      • 3.2.4.1 Printhead Check
      • 3.2.4.2 Motor Check
      • 3.2.4.3 Sensor Check
      • 3.2.4.4 Printhead Driver Check
• Disassembly and Assembly
  • 4.1 Overview
    • 4.1.1 Precautions
    • 4.1.2 Tools
    • 4.1.3 Service Checks After Repair
  • 4.2 Disassembly and Assembly
    • 4.2.1 Printhead Removal
    • 4.2.2 Upper Housing Removal
    • 4.2.3 Printer Mechanism Removal
    • 4.2.4 Board Assembly and Panel Removal
    • 4.2.5 C294MAIN/MAIN-B Board Assembly Removal
    • 4.2.6 C294 Power Supply Board Assembly Removal
    • 4.2.7 Printer Mechanism Disassembly
      • 4.2.7.1 CR Motor Assembly Removal
      • 4.2.7.2 Platen Removal
      • 4.2.7.3 Carriage Unit Removal
      • 4.2.7.4 Ribbon Feed Mechanism Removal
      • 4.2.7.5 RPE Sensor Removal
      • 4.2.7.6 BPE Sensor Removal
      • 4.2.7.7 HP Sensor Removal
      • 4.2.7.8 PG Sensor Removal
      • 4.2.7.9 Release Lever Position Sensor Removal
      • 4.2.7.10 PF Motor Assembly Removal
      • 4.2.7.11 Paper Feed Mechanism Disassembly
      • 4.2.7.12 Paper Guide Removal
• Adjustment
  • 5.1 Overview
    • 5.1.1 Platen Gap Adjustment
    • 5.1.2 Bi-D Adjustment
• Maintenance
  • 6.1 Maintenance
    • 6.1.1 Cleaning
    • 6.1.2 Lubrication
• Appendix
  • 7.1 Connector Summary
    • 7.1.1 Major Component Unit
    • 7.1.2 Pin Assignments
  • 7.2 EEPROM Address Map
  • 7.3 Component Layout
  • 7.4 Exploded Diagrams
  • 7.5 Parts List
  • 7.6 Electric Circuit Schematics