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2.1.3 Operating the Release Levers ............................................................................................ 11

Function .............................................................................................................................. 11

Clamshell Access ............................................................................................................... 11

2.1.4 Installing and Removing the Ribbon Cassette ................................................................... 12

Installing the Cassette ....................................................................................................... 12

Removing the Cassette ..................................................................................................... 12

2.1.5 Installing and Removing the Stamp Assembly .................................................................. 12

Installing the Stamp Assembly ........................................................................................... 12

Removing the Stamp Assembly ......................................................................................... 12

2.1.6 Stamp Assembly Ink Refill ................................................................................................. 13

2.1.7 Replacing the Stamp Face ................................................................................................ 13

Disassembly ...................................................................................................................... 13

Reassembly ....................................................................................................................... 13

2.2 Maintenance ................................................................................................................................ 14

2.2.1 Cleaning ............................................................................................................................ 14

2.2.2 Inspection .......................................................................................................................... 14

Daily Check ....................................................................................................................... 14

Periodic Inspection ............................................................................................................ 14

2.3 Lubrication ................................................................................................................................... 15

2.3.1 Lubricant Types ................................................................................................................. 15

2.3.2 Lubrication Standards ........................................................................................................ 15

2.3.3 Lubrication Sites ................................................................................................................ 15

2.3.4 List of Lubricants and Adhesives ....................................................................................... 17

2.4 Tools ........................................................................................................................................... 17

2.4.1 List of Tools ........................................................................................................................ 17

2.5 Repair .......................................................................................................................................... 17

2.5.1 Repair Levels ..................................................................................................................... 17

2.5.2 Repair Procedure .............................................................................................................. 17

2.5.3 Repair Guidelines .............................................................................................................. 18

Arrangement of Connector Terminal .................................................................................. 24

CHAPTER 3 (DISASSEMBLY, ASSEMBLY,AND ADJUSTMENT)

3.1 Disassembly ................................................................................................................................ 25

3.2 Assembly ..................................................................................................................................... 25

Main Assemblies .......................................................................................................................... 26

Assembly 1

Installation of Fixing lever, J Fixing lever, R and Main motor sub ass'y .............. 26

Assembly 2

Assembly of Paper guide, lower unit ................................................................... 27

Assembly 3

Assembly of Take-up frame unit .......................................................................... 28

Assembly 4

Installation of Take-up frame unit and Paper guide, lower unit ............................ 29

Assembly 5

Assembly of Driven plate ass'y ............................................................................ 30

Assembly 6

Installation of Driven plate ass'y and Carriage drive pulley ................................. 31

Assembly 7

Assembly of Paper feed trigger ass'y .................................................................. 32

Assembly 8

Installation of Paper feed trigger ass'y ................................................................ 33

Assembly 9

Installation of Platen ass'y; Shaft, paper feed ass'y and Paper guide outlet ....... 34

Assembly 10

Assembly of Shaft, paper feed pressure ass'y .................................................... 35

Summary of Contents for M-U420

Page 1: ...IMPACT DOT MATRIX PRINTER FEB 2000 M U420 without price TECHNICAL MANUAL Casio M U420 technical Manual Casio M U420 technical Manual ...

Page 2: ... Mechanism 5 Paper Transport Mechanism 5 Paper Extension Mechanism 5 Release Mechanism 6 1 4 5 Clamshell Mechanism 6 1 4 6 Ribbon Feed Mechanism 7 Ribbon Feed Operation 7 1 4 7 Stamp Mechanism 7 Stamp Operation 7 1 4 8 Auto Cutter Mechanism selectable function 8 Partial Cut Operation 8 Full Cut Operation 8 Cutter Detector 8 1 4 9 Paper Take Up Mechanism 9 Paper Take Up Operation 9 CHAPTER 2 HANDLI...

Page 3: ...s 17 2 5 Repair 17 2 5 1 Repair Levels 17 2 5 2 Repair Procedure 17 2 5 3 Repair Guidelines 18 Arrangement of Connector Terminal 24 CHAPTER 3 DISASSEMBLY ASSEMBLY AND ADJUSTMENT 3 1 Disassembly 25 3 2 Assembly 25 Main Assemblies 26 Assembly 1 Installation of Fixing lever J Fixing lever R and Main motor sub ass y 26 Assembly 2 Assembly of Paper guide lower unit 27 Assembly 3 Assembly of Take up fra...

Page 4: ... Assembly 23 Installation of Main board ass y 54 Assembly 24 Soldering of lead wires 55 Assembly 25 Assembly of Validation guide and Card stopper 56 Assembly 26 Installation of Carriage ass y and Shaft carriage guide 57 Assembly 27 Assembly of FPC head ass y and Print head ass y Ab 58 Assembly 28 Assembly of Paper feed cover sub ass y Manual cutter modes only 59 Assembly 29 Installation of Cutter ...

Page 5: ...Click here to download the full manual at THE CHECKOUT TECH COM ...

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