Servicemanual for electronic precision
balances series
KERN EW/EG
Version 1.1 07/98
EW/EG-SU-e-9811
EW/EG-SU-e-9811
2
CONTENTS
1 SECTION 1. TOTAL VIEW OF EW/WG...........................................................................................3
2 SECTION 2. ELECTRONIC CONSTRUCTION ...................................................................................4
2.1 Block diagramm KERN EW type..............................................................................................4
2.2 Block diagramm KERN EG type ...............................................................................................5
2.3 Whole wiring KERN EW type ...................................................................................................6
2.4 Whole wiring KERN EG type ...................................................................................................7
3 SECTION 3. TROUBLESHOUTING PROCEDURE .............................................................................8
3.1 Troubleshooting procedure .....................................................................................................8
3.2 Troubleshooting table .............................................................................................................9
3.3 Primary checks..................................................................................................................... 10
3.4 How to remove the case ....................................................................................................... 11
3.5 ON/OFF of lock switch ...........................................................................................................12
3.6 How to cover the case........................................................................................................... 12
4 SECTION 4. ADJUSTMENTS AND SETTINGS............................................................................... 13
4.1 Span calibration (Cal) - EW type ........................................................................................... 13
4.2 Corner error adjustment........................................................................................................ 14
4.3 How to adjust overload stopper............................................................................................ 15
4.4 Calibration of Built - In Weight (Ref Cal) - EG type.............................................................. 17
5 SECTION 5. PARTS REPLACEMENT............................................................................................ 19
5.1 Sequence of mechanism unit replacement .......................................................................... 19
6 Parts list for EW type ...................................................................................................................23
EW/EG-KB-e-9811
3
1 SECTION 1. TOTAL VIEW OF EW/WG
Total view of round pan type - 150g --> 600g -
Total view of square pan type - 1500g --> 6kg -
EW/EG-SU-e-9811
4
2 SECTION 2. ELECTRONIC CONSTRUCTION
2.1 Block diagramm KERN EW type
EW/EG-KB-e-9811
5
2.2 Block diagramm KERN EG type
EW/EG-SU-e-9811
6
2.3 Whole wiring KERN EW type
EW/EG-KB-e-9811
7
2.4 Whole wiring KERN EG type
EW/EG-SU-e-9811
8
3 SECTION 3. TROUBLESHOUTING PROCEDURE
3.1 Troubleshooting procedure
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