Table Of Contents - Epson LX-300+II RTP Service Manual

Chapter 1 PRODUCT DESCRIPTION
1.1 FEATURES ......................................................................................................... 9
1.2 SPECIFICATIONS .......................................................................................... 10
1.2.1 Printing Specification ................................................................................ 10
1.2.2 Paper Feeding ............................................................................................ 12
1.2.3 Electrical Specification .............................................................................. 13
1.2.4 Environmental Condition ........................................................................... 13
1.2.5 Reliability .................................................................................................. 14
1.2.6 Ribbon Cartridge ....................................................................................... 14
1.2.7 Safety Approvals ....................................................................................... 14
1.2.8 CE Marking ............................................................................................... 14
1.2.9 Recommended Printable Area ................................................................... 15
1.3 Interface Specifications .................................................................................... 18
1.3.1 Parallel Interface (Forward Channel) ........................................................ 18
1.3.2 Parallel Interface (Reverse Channel) ......................................................... 20
1.3.3 Serial Interface ........................................................................................... 21
1.3.4 USB interface ............................................................................................. 22
1.3.5 Interface Selection ..................................................................................... 23
1.3.6 Prevention of Hosts from Data Transfer Time-out .................................... 23
1.3.7 IEEE1284.4 protocol ................................................................................. 23
1.4 Operation ........................................................................................................... 24
1.4.1 Control Panel ............................................................................................. 24
1.4.2 Functions .................................................................................................... 26
1.4.3 Errors ......................................................................................................... 28
1.5 Control codes .................................................................................................... 29
1.5.1 ESC/P2 ....................................................................................................... 29
1.5.2 IBM 2380/2381 Plus Emulation ................................................................ 30
1.5.3 Bi-Directional Commands ......................................................................... 31
CONTENTS
1.6 Initialization ...................................................................................................... 35
1.7 Paper Specifications ......................................................................................... 36
1.8 Physical Specifications ..................................................................................... 39
1.8.1 Physical Specifications for LX-300+II ...................................................... 39
1.8.2 Physical Specifications for LX-1170II ...................................................... 40
1.9 Accessories ........................................................................................................ 41
Chapter 2 Operating Principles
2.1 Overview ............................................................................................................ 43
2.2 Printer Mechanism ........................................................................................... 44
2.2.1 Printhead .................................................................................................... 45
2.2.2 Carriage Mechanism .................................................................................. 46
2.2.3 Ribbon Mechanism .................................................................................... 48
2.2.4 Platen Gap Adjustment Mechanism .......................................................... 50
2.2.5 Paper Feed Mechanism .............................................................................. 51
2.2.6 Release Mechanism ................................................................................... 53
2.2.7 Other Special Functions ............................................................................. 53
2.3 Electrical Circuit Operating Principles .......................................................... 54
2.3.1 MAIN Board Electric Circuit .................................................................... 54
2.3.2 C294PSB / C294PSE Board ...................................................................... 55
Chapter 3 Troubleshooting
3.1 Overview ............................................................................................................ 57
3.2 Troubleshooting ................................................................................................ 58
3.2.1 Initialization Check .................................................................................... 58
3.2.2 Check Performance By Self-Check Function ............................................ 58
3.2.3 Identify Problems From Symptoms ........................................................... 59
3.2.4 Unit and Parts Check ................................................................................. 63