Chapter 1: Establishing Printer Troubleshooting Ideas 1
1.1 Types and Functional Characteristics of Printers 1
1.2 Conditions Printer Troubleshooting Personnel Should Possess 3
1.2.1 Skill Requirements for Printer Troubleshooting Personnel 3
1.2.2 Equipment Conditions for Printer Troubleshooting 4
1.3 Printer Failure characteristics and basic overhaul methods 8
1.3.1 Failure characteristics of printers 8
1.3.2 Basic overhaul methods of printers 8
1.4 Types of components and functional characteristics of printers 9
1.4.1 Types of common components and functional characteristics of printers 9
1.4.2 Types of special components and functional characteristics of printers 10
1.4.2 Types of special components of printers Types and Functional Characteristics of Special Components in Printers 10
Chapter 2 Understanding the Structural Components and Working Principle of a Pin Printer 14
2.1 The Overall Structure and Workflow of a Pin Printer 14
2.1.1 The Overall Structure of a Pin Printer 14
2.1.2 The Workflow of a Pin Printer 15
2.2 The Print Head Assembly of a Pin Printer 15
2.2 The Print Head Component of a Pin Structure and Working Principle of the Print Head Assembly of a Needle Printer 17
2.2.1 Structure of the Print Head Assembly of a Needle Printer 17
2.2.2 Working Principle of the Print Head Assembly of a Needle Printer 28
2.3 Structure and Working Principle of the Paper Traveling Drive Mechanism of a Needle Printer 37
2.3.1 Structure of the Paper Traveling Drive Mechanism of a Needle Printer 37
2.3.1 Structure of the Paper Traveling Drive Mechanism of a Needle Printer 37
2.3.1 Structure of the Paper Traveling Drive Mechanism of a Needle Printer 37
2.3.2 Working Principle of the Needle Printer Paper Traveling Drive Mechanism 41
2.4 Structure and Working Principle of the Needle Printer Control Circuit 44
2.4.1 Structure of the Needle Printer Control Circuit 44
2.4.2 Working Principle of the Needle Printer Control Circuit 48
2.5 Needle Printer Power Circuit Structure and Operating Principle of the Needle Printer Power Circuit 51
2.5.1 Structure of the Needle Printer Power Circuit 51
2.5.2 Operating Principle of the Needle Printer Power Circuit 52
2.6 Structure and Operating Principle of the Needle Printer Interface Circuit 57
2.6.1 Structure of the Needle Printer Interface Circuit 57
2.6.2 Working Principle of Needle Printer Interface Circuit 58
Chapter 3 Understanding the Structural Composition and Working Principle of Inkjet Printers 62
3.1 The Overall Structure of Inkjet Printers and the Working Principle 62
3.1.1 The Overall Structure of Inkjet Printers 62
3.1.2 The Working Principle of Inkjet Printers 64<
3.2 Structure and Working Principle of Inkjet Printer Printing Mechanism 66
3.2.1 Structure and Working Principle of Inkjet Head of Inkjet Printer 67
3.2.2 Structure and Working Principle of Inkjet Cartridge of Inkjet Printer 72
3.3 Structure and Working Principle of Inkjet Printer Character Carriage Mechanism 74
3.3.1 Structure of Inkjet Inkjet Printer Word Carriage Mechanism 74
3.3.2 Principle of Operation of the Inkjet Printer Word Carriage Mechanism 74
3.4 Structure and Principle of Operation of the Inkjet Printer Ink Supply System 75
3.4.1 Structure of the Inkjet Printer Ink Supply System 75
3.4.2 Principle of Operation of the Inkjet Printer Ink Supply System 79
3.5 Inkjet Printer Paper Routing 3.5 Structure and Operating Principle of the Inkjet Printer Taking Mechanism 80
3.5.1 Structure of the Inkjet Printer Taking Mechanism 80
3.5.2 Operating Principle of the Inkjet Printer Taking Mechanism 82
3.6 Structure and Operating Principle of the Inkjet Printer Control Circuit 83
3.6.1 Structure of the Inkjet Printer Control Circuit 84
3.6.2 How the Inkjet Printer Control Circuit Works 86
3.7 Structure and Operation of the Inkjet Printer Power Supply Circuit 89
3.7.1 Structure of the Inkjet Printer Power Supply Circuit 89
3.7.2 How the Inkjet Printer Power Supply Circuit Works 90
Chapter 4 Understanding the Composition and Operation of a Laser Printer Structural Components and Operating Principles of Laser Printers 96
4.1 The Overall Structure and Operating Principles of Laser Printers 96
4.1.1 The Overall Structure of Laser Printers 96
4.1.2 Operating Principles of Laser Printers 99
4.2 The Structure and Operating Principles of Laser Components for Laser Printers 103
4.2.1 Structure of the Laser Module of a Laser Printer 103
4.2.2 Principle of Operation of the Laser Module of a Laser Printer 108
4.3 Structure and Principle of Operation of the Photoreceptor Drum Assembly of a Laser Printer 109
4.3.1 Structure of the Photoreceptor Drum Assembly of a Laser Printer (Developer Module) 109
4.3.2 Structure and Operating Principle of the Photoreceptor Drum Assembly (Developer Assembly) of a Laser Printer 111
4.4 Structure and Operating Principle of the Definition Assembly of a Laser Printer 116
4.4.1 Structure of the Definition Assembly of a Laser Printer 116
4.4.2 Operating Principle of the Definition Assembly of a Laser Printer 119
4.5 Structure and Operating Principle of the Paper Walking Mechanism of a Laser Printer 120
4.5 Structure and Operating Principle of the Paper Walking Mechanism of a Laser Printer Structure and Principle of Operation 120
4.5.1 Structure of the Laser Printer Paper-Walking Mechanism 120
4.5.2 Principle of Operation of the Laser Printer Paper-Walking Mechanism 122
4.6 Structure and Principle of Operation of the Laser Printer Control Circuit 123
4.6.1 Structure of the Laser Printer Control Circuit 123
4.6.2 Principle of Operation of Laser Printer Control Circuits 124
4.7 Structure and Principle of Operation of Laser Printer High Voltage Circuits 126
4.7.1 Structure of Laser Printer High Voltage Circuits 127
4.7.2 Principle of Operation of Laser Printer High Voltage Circuits 129
4.8 Structure of Laser Printer Power Circuits and Working Principle 132
4.8.1 Structure of the Power Supply Circuit of a Laser Printer 132
4.8.2 Working Principle of the Power Supply Circuit of a Laser Printer 134
Chapter 5 Mastering the Installation, Debugging, and Troubleshooting of a Needle Printer 139
5.1 Installation and Connection of a Needle Printer and Printing Tests 139
5.1.1.1 Installation and Connection of a Needle Printer and Printing Tests 139
5.1.1 Connection of Needle Printer Wiring 139
5.1.2 Installation of Needle Printer Driver 140
5.1.3 Printing Tests for Needle Printers 143
5.2 Overhauling Methods of Needle Printer Printhead and Its Components 145
5.2.1 Failures of the Printhead and Its Components of the Needle Printer Performance and Causes 145
5.2.2 Disassembly of the Print Head and Its Components 146
5.2.3 Troubleshooting the Print Head and Its Components 156
5.3 Removal and Replacement of the Ribbon in a Needle Printer 168
5.4 Troubleshooting the Paper Traveling Drive Mechanism of the Needle Printer 175
5.4 Troubleshooting the Paper Traveling Drive Mechanism of a Needle Printer 175< /p>
5.4.1 Failure Performance and Causes of the Needle Printer Paper Traveling Drive Mechanism 175
5.4.2 Disassembly of the Needle Printer Paper Traveling Drive Mechanism 175
5.4.3 Troubleshooting of the Needle Printer Paper Traveling Drive Mechanism 179
5.5 Troubleshooting of the Control Circuit of the Needle Printer 183
5.5.2 Troubleshooting Methods for Needle Printer Control Circuits 184
5.6 Troubleshooting of Needle Printer Power Circuits 192
5.6.1 Failure Performance of the Needle Printer Power Circuit 192
5.6.2 Failure Performance of the Needle Printer Power Circuit 192
5.6.2 Troubleshooting Methods for Needle Troubleshooting the Power Supply Circuit of a Needle Printer 192
5.7 Troubleshooting the Interface Circuit of a Needle Printer 194
5.7.1 Failure of the Interface Circuit of a Needle Printer and the Causes of the Failure 194
5.7.2 Troubleshooting the Interface Circuit of a Needle Printer 194
6 Chapter 6: Mastering the Installation, Debugging, and Troubleshooting of Ink-Jet Printers Installation, Debugging, and Troubleshooting 197
6.1 Inkjet Printer Installation, Connection, and Printing Tests 197
6.1.1 Connecting Inkjet Printer Circuits 197
6.1.2 Installation of Inkjet Printer Drivers 199
6.1.3 Printing Tests for Inkjet Printers 202
6.2 Replacement of Inkjet Cartridges 204
6.2 Inkjet Printers Printer Cartridge Replacement 204
6.3 Troubleshooting the Inkjet Printer Printing Mechanism 207
6.3.1 Failure Manifestations and Causes of the Inkjet Printer Printing Mechanism 207
6.3.2 Disassembly of the Inkjet Printer Printing Mechanism 208
6.3.3 Methods of Troubleshooting the Inkjet Printer Printing Mechanism 211
6.4 Troubleshooting the Inkjet Printer Character Carriage Mechanism 219
6.4.1 Failure of the Inkjet Printer Character Carriage Mechanism and Causes 219
6.4.2 Disassembly of the Inkjet Printer Character Carriage Mechanism 219
6.4.3 Troubleshooting the Inkjet Printer Character Carriage Mechanism 223
6.5 Troubleshooting the Inkjet Printer Ink Supply System Troubleshooting the Inkjet Printer Ink Supply System 226
6.5.1 Failures and Causes of the Inkjet Printer Ink Supply System 226
6.5.2 Disassembly of the Inkjet Printer Ink Supply System 226
6.5.3 Troubleshooting of the Inkjet Printer Ink Supply System 228
6.6 Troubleshooting the Paper Tray Mechanism in the Inkjet Printer Troubleshooting 232
6.6.1 Failure of the Inkjet Printer Tractor Mechanism and Causes 232
6.6.2 Disassembly of the Inkjet Printer Tractor Mechanism and Motor 232
6.6.3 Troubleshooting of the Inkjet Printer Tractor Mechanism 235
6.7 Troubleshooting Inkjet Printer Control Circuits 237
6.5.3 Troubleshooting the Inkjet Printer Ink Supply System 238
6.6.7 Troubleshooting the Inkjet Printer Control Circuits 239 /p>
6.7.1 Inkjet Printer Control Circuit Failure Manifestations and Causes 237
6.7.2 Disassembly of the Inkjet Printer Control Circuit Board 237
6.7.3 Troubleshooting the Inkjet Printer Control Circuit 239
6.8 Troubleshooting the Inkjet Printer Power Circuit 240
6.8. 1 Failure of the Inkjet Printer Power Supply Circuit 240
6.8.2 Removal of the Inkjet Printer Power Supply Circuit Board 240
6.8.3 Troubleshooting of the Inkjet Printer Power Supply Circuit 242
Chapter 7: Mastering the Installation, Debugging, and Troubleshooting of a Laser Printer 246
7.1 Installation and Connection of the Laser Printer and Printing Tests 246
7.1.1 Connecting the Laser Printer Wiring 246
7.1.2 Installing the Laser Printer Driver 248
7.1.3 Printing Tests for the Laser Printer 251
7.2 Troubleshooting Laser Components of a Laser Printer 253
7.2.1 Failures of the Laser Component of the Laser Printer 253
7.2.1 Failures of the Laser Component and Causes Laser Module Failures and Causes 254
7.2.2 Disassembling the Laser Module of a Laser Printer 254
7.2.3 Troubleshooting the Laser Module of a Laser Printer 260
7.3 Troubleshooting the Photoreceptor Drum Assembly of a Laser Printer 262
7.3.1 Troubleshooting the Photoreceptor Drum Assembly of a Laser Printer (Developing Module) 262
7.3.1 Troubleshooting the Photoreceptor Drum Assembly of a Laser Printer Developer Module 262
7.3.2 Removing the Photoconductor Module 263
7.3.3 Troubleshooting the Photoconductor Module 265
7.4 Troubleshooting the Laser Printer Shaping Module 269
7.4.1 Troubleshooting the Laser Printer Shaping Module 269
7.4 7.4.1 Failures and causes of the laser printer fixing assembly 269
7.4.2 Disassembly of the laser printer fixing assembly 269
7.4.3 Troubleshooting the laser printer fixing assembly 274
7.5 Troubleshooting the laser printer tractor mechanism 276
7.5.1 Failures and causes of the laser printer tractor mechanism 276
7.5.1 Laser printer tractor mechanism Troubleshooting the Laser Printer Tractor Mechanism 276
7.5.2 Disassembling and Disassembling the Laser Printer Tractor Mechanism 276
7.5.3 Troubleshooting the Laser Printer Tractor Mechanism 280
7.6 Troubleshooting the Laser Printer Sensor Circuitry 282
7.6.1 Troubleshooting the Laser Printer Sensor Circuitry 282
7.6.1 Failures in the Laser Printer Sensor Circuitry 282
7.6.2 Troubleshooting the Laser Printer Sensor Circuit 282
7.7 Troubleshooting the Laser Printer Power Supply Circuit 286
7.7.1 Troubleshooting the Laser Printer Power Supply Circuit 286
7.7.2 Troubleshooting the Laser Printer Power Supply Circuit 286
Page 8 Chapter 8 Analyzing Printer Troubleshooting Examples 289
8.1 Troubleshooting Examples of Needle Printers 289
8.1.1 Troubleshooting Methods of Needle Printers 289
8.1.2 Troubleshooting the Faults of Non-Printing of Needle Printers 291
8.1.3 Faults of Shallow Printing Effect or Printing Characters Not Flatly Aligned in Needle Printers Troubleshooting 293
8.1.4 Troubleshooting of Printing Character Graphics Shortcomings of a Needle Printer 294
8.1.5 Troubleshooting of Single Page Printing of a Needle Printer that Doesn't Feed Properly 294
8.1.6 Troubleshooting of Continuous Printing of a Needle Printer that Doesn't Feed Properly 295
8.2 Troubleshooting of Inkjet Printers Example 297
8.2.1 Inkjet Printer Troubleshooting 297
8.2.2 Inkjet Printer Print Quality Reduction Troubleshooting 299
8.3 Example of Laser Printer Troubleshooting 302
8.3.1 Printing Poor Quality Troubleshooting 302
8.3.2 Laser Printer Paper Jam Faults Troubleshooting a Laser Printer Paper Jam 304
8.3.3 Troubleshooting a Laser Printer Circuit 306
Appendix Simulation Training Answers 313
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