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TABLE OF CONTENT

1. FUNDAMENTAL OF THE SYSTEM .......................................................................... 1

1.1. Overview ................................................................................................................. 1

2. ELECTRONICS .......................................................................................................... 5

2.1 Summary of Board Connectors ............................................................................. 5

2.2 Pin Configuration .................................................................................................... 9

3. MECHANISM ........................................................................................................... 11

3.1 Remove the Electronics Cover ............................................................................ 11

3.2 Remove the Right Side Cover .............................................................................. 12

3.3 Replacing the Key/LCD Panel Module ................................................................ 13

3.4 Replacing the Main Board .................................................................................... 14

3.5 Replacing the Power Supply Unit ........................................................................ 16

3.6 Replacing the Stepping Motor ............................................................................. 17

3.7 Replacing the Platen Roller Assembly ................................................................ 18

3.8 Replacing the Print head ASS'Y .......................................................................... 20

3.9 Replacing the Media Sensor Module................................................................... 22

3.10 Replacing the Ribbon End Sensor Module ....................................................... 23

3.11 Replacing the Ribbon Encoder Sensor Module ............................................... 24

3.12 Centronics Parallel Interface Board Installation (Option) ............................... 26

3.13 Cutter Module Installation (Option) ................................................................... 28

3.14 Peel-off Module Installation (Option) ................................................................ 30

3.15 Print Engine Module Specification (Option) ..................................................... 32

4. TROUBLESHOOTING ............................................................................................. 34

4.1 Common Problems ............................................................................................... 34

4.2 Print Head Pressure Adjustment Knob ............................................................... 38

4.3 Mechanism Fine Adjustment to Avoid Ribbon Wrinkles ................................... 39

4.4 Z-axis Mechanism Adjustment Knob .................................................................. 41

5. MAINTENANCE ....................................................................................................... 43

UPDATE HISTORY ...................................................................................................... 45

TSC ME240 Service Manual

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