OHAUS DISCOVERY BALANCE, Руководство по обслуживанию

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TABLE OF CONTENTS
Page No.
Appendix A STANDARD CALIBRATION
A.1 Automatic Internal Calibration (Advanced Auto Cal) ................................................ A-2
A.2 Span Calibration ....................................................................................................... A-3
A.3 Calibration Test (Cal Test)........................................................................................ A-4
A.4 Calibration Adjustment (Cal Adj)............................................................................... A-5
Appendix B SERVICE CALIBRATION
B.1 Navigation................................................................................................................. B-1
B.2
Entering Service Menu ............................................................................................. B-1
B.3 Ramp ........................................................................................................................ B-2
B.4
Service Span Calibration .......................................................................................... B-3
B.5 Service Internal Calibration (InCal)........................................................................... B-4
APPENDIX C SOFTWARE SERVICE TOOL INSTRUCTIONS
C.1 Restore EEPROM Data ............................................................................................ C-2
C.2 Replace Load Cell .................................................................................................... C-3
C.3 Install new Main Printed Circuit Board...................................................................... C-4
C.4 Update Software in the Balance ............................................................................... C-5
C.5 Diagnostics ............................................................................................................... C-6
C.5.1 Incal Weight Mechanism Testing....................................................................... C-6
LIST OF TABLES
TABLE NO. TITLE
1-1 Masses Used to Test Discovery Balance ..............................................................1-3
1-2 Discovery Balance Model Specifications...............................................................1-4
2-1 Balance Will Not Turn On......................................................................................2-2
2-2 Balance Does Not Respond to Front Panel Controls ............................................2-3
2-3 No Display or Partial Display.................................................................................2-3
2-4 Balance Cannot Calibrate Using External Weights ...............................................2-4
2-5 Balance Cannot Calibrate Internally......................................................................2-5
2-6 Error Codes ...........................................................................................................2-6
3-1 Display Assembly Parts List ..................................................................................3-5
4-1 Discovery Test Masses .........................................................................................4-5
4-2 COM1 Interface Pin Connections..........................................................................4-7
4-3 RS232 Command Table........................................................................................4-8
5-1 Parts List for Discovery Housing ...........................................................................5-1
5-2 Parts List for Discovery Display Assembly ............................................................5-2
5-3 List of Internal Parts Outside Load Cell .................................................................5-3
5-4 List of Discovery Load Cell Parts ..........................................................................5-4
LIST OF ILLUSTRATIONS
FIGURE NO. TITLE
1-1 Service Toolset, Part No. 80030340 .....................................................................1-2
3-1 Breeze Ring, Breeze Ring Base, Grommet and Pan
removed from Discovery Balance .........................................................................3-1
3-2 Removing Discovery Balance back cover .............................................................3-2
3-3 Balance with back cover removed.........................................................................3-2
3-4 Scale bottom, showing Draft Shield Assembly ......................................................3-3
3-5 Discovery Balance with cover removed ................................................................3-4
3-6 Keyway hole on cover guided over cone-shaped brass screw heads...................3-4
Ohaus Corporation www.ohaus.com ii Discovery Balance Service Manual