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1 Introduction ............................................................................................................................................ 4

1.1 Instructions ............................................................................................................................................... 4

1.1 General Safety ......................................................................................................................................... 5

1.2 Safety Markings ....................................................................................................................................... 5

1.3 Handling Electricity .................................................................................................................................. 6

1.4 Conduct during Accidents ........................................................................................................................ 6

2 Changing Assembly Parts ..................................................................................................................... 7

2.1 Tools ......................................................................................................................................................... 7

2.2 Changing the Control Panel ..................................................................................................................... 7

2.3 Dismounting the Cover ............................................................................................................................. 8

2.4 Changing the Print Mechanism ................................................................................................................ 9

2.5 Changing the Printhead ......................................................................................................................... 10

2.6 Changing the Print Roller ....................................................................................................................... 12

2.7 Changing the Clutch and Brake of the Ribbon Rewinder ....................................................................... 13

2.8 Changing the Brake of the Ribbon Unwinder ......................................................................................... 14

2.9 Changing the Drive of the Cutter ............................................................................................................ 15

2.10 Changing the Blade of the Cutter Unit ................................................................................................... 16

2.11 Changing the Circuit Board .................................................................................................................... 17

2.12 Changing the Power Supply ................................................................................................................... 18

3 Adjustments ......................................................................................................................................... 19

3.1 Measuring the Winding Force ................................................................................................................ 19

3.1.1 Testing the Winding Force of the Clutch and Break of the Ribbon ................................................... 19

3.1.2 Measuring the Breaking Force of the Unwinder ............................................................................... 20

3.2 Setting the Winding Force ...................................................................................................................... 21

3.3 Adjusting the Print Mechanism ............................................................................................................... 22

3.3.1 Adjustable Elements ......................................................................................................................... 22

3.3.2 Settings.............................................................................................................................................23

4 Troubleshooting and Error Treatment ................................................................................................ 24

4.1 Failure of Device Functions .................................................................................................................... 24

4.2 Permanently Occurring Hardware Errors ............................................................................................... 24

5 Block Diagram ...................................................................................................................................... 25

6 Layout Diagram PCB CPU ................................................................................................................... 26

7 Index ...................................................................................................................................................... 27

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