BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland 2
Contents:
Chapter 1 – General information ......................................................................................3
1.1 Safety instructions................................................................................................................................... 3
1.2 ESD-related note: Electrostatic Discharge (ESD)................................................................................... 4
1.3 Tools and gauges.................................................................................................................................... 5
Chapter 2 – Description of technical details ...................................................................6
2.1 BERNINA Embroidery module 830 technical specifications................................................................... 6
2.2 Cleaning. ................................................................................................................................................. 6
2.3 Block diagram. (Revision 0.8) ................................................................................................................. 7
2.4 PCBs, plugs and cables. ......................................................................................................................... 8
Chapter 4 – Replacing assemblies / parts .....................................................................12
4.1 Removing and replacing covers............................................................................................................ 12
4.2 Replacing the PCBA-EMB-Main. .......................................................................................................... 14
4.3 Replacing the PCBA-Frame.................................................................................................................. 15
4.4 Replacing the PCBA-Y-Arm.................................................................................................................. 17
4.5 Replacing the PCBA-X-Carriage Front resp. X-Carriage Rear............................................................. 21
4.6 Replacing the stepping motor Y-Arm.................................................................................................... 25
4.7 Replacing the stepping motor X-Carriage............................................................................................. 27
4.8 Replacing the Y-Arm drive belt. ............................................................................................................ 29
4.9 Replacing the X-Carriage drive belt(s).................................................................................................. 34
4.10 Replacing the flexible gearwheel / bearing of the X-Carriage drive.................................................... 36
Chapter 5 – Adjustments.................................................................................................40
5.1 Adjustments of X-belts being parallel.................................................................................................... 40
5.2 Adjustment of belt tension Y-Arm.......................................................................................................... 43
5.3 Adjustment of X-Carriage belt tension. ................................................................................................. 44
5.4 Adjustment of hoop reference............................................................................................................... 44
Chapter 6 – Service Program..........................................................................................45
Menu 7 – Embroidery.................................................................................................................................. 45
Chapter 7 – Testing the module using the service test pattern...................................55
7.1 Description of possible faults: ............................................................................................................... 55
7.2 Test pattern assessment....................................................................................................................... 56
Chapter 8 – Lubrication plan ..........................................................................................57
8.1 Y-Arm .................................................................................................................................................... 57
8.2 X-Carriage............................................................................................................................................. 60
Chapter 9 – Maintenance Guidelines .............................................................................62
Document Revision History............................................................................................62
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