Operator`s manual

Table of Contents

1. GENERAL INFORMATION ..............................……………………. 1-1

1.1 Introduction …..…..................................……………………. 1-1

1.2 Functional Description .........................……………………. 1-1

1.3 Printer Initialization ...........................………………………… 1-2

1.4 Printhead Assembly ............................……………………… 1-2

1.5 Paper Feeding .................................………………………… 1-2

1.6 Paper-Out Detection ............................……………………… 1-3

1.7 Bell Operation ................................……………………….. 1-3

1.8 Operator Control Panel .......................………………………… 1-3

1.9 Non-Volatile Memory ...........................……………………… 1-4

1.10 Ribbon Drive System ...........................………………………. 1-4

1.11 Carriage Drive System .........................………………………. 1-4

1.12 Universal Power Supply ........................……………………… 1-5

1.13 Controller Board ............................………………………. 1-6

1.14 RS-232C Serial Interface ........................…………………. 1-6

1.15 Current Loop Interface Option ...................…………………… 1.7

1.16 Current Loop Installation .............................…………………….. 1-8

1.17 TTL Parallel Interface .........................………………………… 1-9

1.18 Physical Characteristics .......................………………………… 1-11

2. THEORY OF OPERATION ...............................………………………. 2-1

2.1 Introduction .................................…………………………… 2-1

2.2 Microprocessor System .........................……………………….. 2-1

2.3 Character Printing ............................…………………………… 2-2

2.4 Printhead Theory of Operation ....................………………….. 2-2

2.5 Paper Motor ..................................………………………….. 2-3

2.6 Carriage Drive ................................………………………… 2-4

2.7 System Clamp ................................…………………………… 2-5

3. TROUBLESHOOTING ..................................……………………….. 3-1

3.1 Introduction .................................……………………………… 3-1

4. MAINTENANCE ......................................………………………….. 4-1

4.1 Introduction .................................………………………………. 4-1

4.2 Recommended Tools and Materials ........................…………… 4-1

4.3 Recommended Spare Parts .............................……………….. 4-1

4.4 Scheduled Maintenance ..............................………………….. 4-2

4.4.1 Printhead ..................................………………………………… 4-3

4.5 Corrective Maintenance ........................…………………………. 4-3

4.5.1 Top Cover Removal and Replacement - Figure 4.1 ............…….. 4-4

4.5.2 Bottom Cover Removal and Replacements - Figure 4.1 ............ 4-5