Table Of Contents - Epson MX-80 Technical Manual

TABLE OF CONTENTS
CHAPTER 1
GENRAL
1.1 Features of MX-80 ............................................ 1-1
1.2 Features of Interfaces ......................................... 1-1
1.3 Serviceability ... '" ............................................ 1-1
1.4 General Specifications of MX-80 ............................... 1-2
1.4.1 Printer .................................................... 1-2
1.4.2 Parallel Interface (Standard) ............................... 1-2
1.5 Major Components ............................................ 1-3
CHAPTER 2
PRINCIPLES OF OPERATION
2.1 General ....................................................... 2-1
2.2 Block Diagrams ............................................... 2-1
2.3 Principles of '::>peration ........................................ 2-9
2.4 Electrical Circuits ............................................. 2-9
2.5 Operating Principles of Printer Mechanism ..................... 2-23
2.5.1 Head carriage and paper feeding mechanisms .............. 2-23
2.5.2 Print head ................................................. 2-23
2.5.3 Ribbon feeding mechanism ................................ 2-34
2.5.4 Detecting mechanism ...................................... 2-24
2.5.5 Frame section ............................................. 2-24
CHAPTER 3
DISASSEMBLY, ASSEMBLY AND TROUBLESHOOTING
3.1 General ....................................................... 3-1
3.2 Tools and Measuring Instruments .............................. 3-1
3.3 Disassembly and Assembly .................................... 3-3
3.3.1 Removal of Upper Case .................................... 3-3
3.3.2 Disassembly of electric ciucuit block ....................... 3-5
3.3.3 Disassembly of M-3210 printer mechanism block ........... 3-9
3.4 Symptoms of Trouble and Repair ............................... 3-15
3.4.1 General ................................................... 3-1 5
3.4.2 Troubleshooting by symptom ............................... 3-16
3.4.3 Troubleshooting of control circuit board .................... 3-20
CHAPTER 4
MAINTENANCE
4.1 General ....................................................... 4-1
4.2 Lubrication .................................................... 4-1
4.2.1 Lubricants ................................................. 4-1
4.2.2 Lubrication standards ...................................... 4-1
4.2.3 Bonding Standards ........................................ 4-2
4.3 Adjustments ......... " ...... , .. , .............................. 4-4
4.3.1 Adjustment of head driving pulse width ..................... 4-4
4.3.2 Adjustment of timing pulse generating position ............. 4-5
4.3.3 Adjustment of phase relationship
between timing signal and reset signal ................•.... 4-6
CHAPTER 5
CIRCUIT DIAGRAMS
5.1 GENERAL ..............................................•.•.... 5-1
5.2 Connection Diagrams .......................................... 5-1
5.3 Component Layout Drawings ................................... 5-5
CHAPTER 6
SIMPLE TROUBLESHOOTING
6.1 General ....................................................... 6-1
6.2 Troubleshooting ............................................... 6-1
REV. A