UBI EasyCoder 501 – Service Manual
1
0. INTRODUCTION
UBI EasyCoder 501
Service Manual
Edition 5, May 1997
Article No. 1-960320-04
0.1 Contents
Continued!
0. Introduction
0.1
Contents .......................................................................................... 1
0.2
Preface ............................................................................................ 5
0.3
Notices and Approvals .................................................................... 6
1. Models and Options
1.1
Identification ................................................................................... 7
1.2
Specifications ................................................................................ 13
1.3
Measures ....................................................................................... 14
2. Front and Keyboard
2.1
Front ............................................................................................. 15
2.2
Display/Keyboard ......................................................................... 16
2.3
Display Contrast Adjustment ......................................................... 16
2.4
Slides ............................................................................................ 17
2.5
Keyboard Interface Board; Components Diagram ......................... 18
2.6
Keyboard Interface Board; Circuit Diagram .................................. 19
3. Hatches and Doors
3.1
Right-Hand Door .......................................................................... 20
3.2
Front Hatch ................................................................................... 21
3.3
Left-Hand Cover ........................................................................... 22
4. Rear Plate
4.1
Description .................................................................................... 23
4.2
Devices on Rear Plate ................................................................... 24
5. Paper Supply
5.1
Internal Supply .............................................................................. 25
5.2
External Supply ............................................................................. 28
6. Label Slack Absorber
6.1
Description .................................................................................... 33
6.2
Dismantling ................................................................................... 34
7. Transfer Ribbon Mechanism
7.1
Description .................................................................................... 35
7.2
Ribbon Unwind Unit ..................................................................... 35
7.3
Ribbon Rewind Unit ..................................................................... 37
7.4
Ribbon End Sensor ........................................................................ 39
8. Print Unit
8.1
Different Models ........................................................................... 41
8.2
Main Parts ..................................................................................... 41
8.3
Pressing Roller .............................................................................. 43
8.4
Stepper Motor ............................................................................... 44
8.5
Tear-Off Edge ............................................................................... 46
8.6
Label Stop Sensor (LSS) ............................................................... 47
8.7
Printhead ....................................................................................... 50
8.8
Headlift Mechanism ...................................................................... 58
9. Paper Rewind Kit
9.1
Description .................................................................................... 61
9.2
Main Parts ..................................................................................... 63
9.3
Paper Rewind Unit ........................................................................ 64
10. Ribbon Save Device
10.1
Working Principles ........................................................................ 65
10.2
Control .......................................................................................... 66
10.3
Maintenance .................................................................................. 66
10.4
Transfer Ribbons ........................................................................... 67
10.5
Main Parts ..................................................................................... 67
10.6
Print Unit Assy. ............................................................................. 68
10.7
Headlift Mechanism ...................................................................... 77
10.8
Ribbon Rewind ............................................................................. 80
10.9
Connection Board ......................................................................... 81
