Table Of Contents - Epson LX-300+ 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 ............................................................................................ 14
1.2.3 Electrical Specification .............................................................................. 16
1.2.4 Environmental Condition ........................................................................... 16
1.2.5 Reliability .................................................................................................. 16
1.2.6 Ribbon Cartridge ....................................................................................... 16
1.2.7 Safety Approvals ....................................................................................... 17
1.2.8 CE Marking ............................................................................................... 17
1.2.9 Printable Area ............................................................................................ 18
1.3 Interface Specifications .................................................................................... 21
1.3.1 Parallel Interface (Forward Channel) ........................................................ 21
1.3.2 Parallel Interface (Reverse Channel) ......................................................... 23
1.3.3 Serial Interface ........................................................................................... 24
1.3.4 Interface Selection ..................................................................................... 25
1.3.5 Prevention Hosts from Data Transfer Time-out ........................................ 25
1.3.6 IEEE1284.4 protocol ................................................................................. 25
1.4 Operation ........................................................................................................... 26
1.4.1 Control Panel ............................................................................................. 26
1.4.1.1 Switches ............................................................................................. 26
1.4.1.2 LED ................................................................................................... 27
1.4.1.3 Buzzer ................................................................................................ 27
1.4.2 Functions .................................................................................................... 28
1.4.2.1 Usual Operation ................................................................................. 28
1.4.2.2 Operation at Power-on ....................................................................... 28
1.4.2.3 Default Setting ................................................................................... 28
1.4.2.4 Bi-d. Adjustment ............................................................................... 29
1.4.3 Errors ......................................................................................................... 30
1.5 Control codes .................................................................................................... 31
CONTENTS
1.5.1 ESC/P2 ....................................................................................................... 31
1.5.2 IBM 2390 Plus Emulation ......................................................................... 32
1.5.3 Bi-Directional Commands ......................................................................... 33
1.5.3.1 Reply Printer Status ........................................................................... 35
1.5.3.2 Packet commands .............................................................................. 36
1.6 Initialization ...................................................................................................... 37
1.7 Paper Specifications ......................................................................................... 38
1.8 Physical Specifications ..................................................................................... 41
1.8.1 Physical Specifications for LX-300+ ........................................................ 41
1.8.2 Physical Specifications for LX-1170 ......................................................... 42
1.9 Accessories ........................................................................................................ 43
Chapter 2 Operating Principles
2.1 Overview ............................................................................................................ 45
2.2 Printer Mechanism ........................................................................................... 46
2.2.1 Printhead .................................................................................................... 47
2.2.1.1 Buzzer Function ................................................................................ 47
2.2.2 Carriage Mechanism .................................................................................. 48
2.2.2.1 High speed skip method .................................................................... 50
2.2.3 Ribbon Mechanism .................................................................................... 50
2.2.3.1 Ink Ribbon Shifting Mechanism ....................................................... 50
2.2.3.2 Color Ribbon Driving Mechanism (Option) ..................................... 50
2.2.4 Platen Gap Adjustment Mechanism .......................................................... 52
2.2.5 Paper Feed Mechanism .............................................................................. 53
2.2.5.1 Page Length Measurement ................................................................ 54
2.2.6 Release Mechanism ................................................................................... 55
2.2.7 Other Special Functions ............................................................................. 55
2.2.7.1 Energy saving mode .......................................................................... 55
2.2.7.2 Quiet Mode ........................................................................................ 55
2.3 Electrical Circuit Operating Principles .......................................................... 56
2.3.1 MAIN Board Electric Circuit .................................................................... 56