Epson 2080 Service Manual - Page 6

Contents Revision A Product Description Specifications 8 Features ...8 Accessories ...8 Hardware Specifications 9 Printing Method ...9 Printing Specifications 9 Paper Handling ...9 Paper Specifications 11 Ribbon Specificatio 11 Electrical Specifications 11 Environtal Conditions 11 Reliability ...11 Safety Approvals 12 CE Marking ...12 Physical Specifications 12 Firmware Specifications 13 Control Codes and Fonts 13 Interface Specifications 15 Parallel Interface (Forward Channel 15 Parallel Interface (Reverse Channel 15 Operation Instruction 16 Errors ...17 EEPROM Initialization 18 Main Components 19 C273 Main Board 20 Operating Principles Printer Mechanism Operations 22 Power Supply Operation 22 Control Circuit 23 Overview of Control Circuit Operation 23 System Reset Circuit 25 Printhead Driver Circuit 26 CR Motor Driver Circuit 27 PF Motor Driver Circuit 29 EEPROM Control Circuit 29 Sensor Circuits 30 Disassembly and Assembly Adjustment Overview ...34 Pre-operation for the Adjustment Program 34 Bi-D Adjustment 36 TPE Level Reset 37 Writing the User-characteristic Data 38 Troubleshooting Overview ...41 Troubleshooting Information 41 Printhead ...41 Sensors ...41 Motors ...41 The Error codes with Indicators and Buzzer 41 Unit Level Troubleshooting 42 Repairing the C166 PSB/PSE Board 42 Repairing the C273 Main Board 42 Repairing the Printer Mechanism 44 Maintenance Appendix EEPROM Address Map 48 Connector Summary 51 Component Layout 52 Circuit Diagram 54 6