OHAUS Valor 2000 Service Manual

Also see for CS 2000: User guide Instruction manual Operating manual Operating manual Operating manual

TABLE OF CONTENTSOhaus Corporation www.ohaus.com i Valor™ 2000 Series Service ManualPage No.CHAPTER 1 GETTING STARTED1.1 Introduction ..............................................................................................................1-11.2 Service Facilities ......................................................................................................1-11.3 Tools and Test Equipment Required ........................................................................1-11.4 Specifications ...........................................................................................................1-31.5 Scale Operation .......................................................................................................1-41.5.1 Overview of the Controls ...................................................................................1-41.5.2 Power On ..........................................................................................................1-51.5.3 Power Off ..........................................................................................................1-51.5.4 Menu Setup ......................................................................................................1-61.5.5 Menu Navigation ...............................................................................................1-61.6 Legal For Trade .......................................................................................................1-7CHAPTER 2 TROUBLESHOOTING2.1 Troubleshooting .......................................................................................................2-12.2 Diagnostic Guide ......................................................................................................2-12.2.1 Diagnosis ..........................................................................................................2-12.2.2 Checking Load Cells for Trouble .......................................................................2-22.2.3 Testing the Printed Circuit Board (PCB) ............................................................2-42.2.4 Diagnostic Guide...............................................................................................2-6CHAPTER 3 MAINTENANCE PROCEDURES3.1 Preventive Maintenance ...........................................................................................3-13.1.1 Preventive Maintenance Checklist ....................................................................3-13.2 Service Strategy.......................................................................................................3-13.3 Opening the Scale....................................................................................................3-13.2.1 Separating the Top and Bottom Housings .........................................................3-23.2.2 Removing the Component Covers and Lifting Out the Cable Plugs ..................3-33.4 Removing/Replacing the Main Printed Circuit Board (PCB) .....................................3-33.5 Replacing the Rear Display PCB..............................................................................3-43.6 Removing/Replacing the Load Cell ..........................................................................3-43.7 Cable Set Replacement ...........................................................................................3-53.8 Replacing the Battery ...............................................................................................3-53.9 Replacing the Gaskets .............................................................................................3-53.10 Setting/Removing Legal-For-Trade ..........................................................................3-63.11 Replacing the Function Label ...................................................................................3-6CHAPTER 4 TESTING4.1. Testing .....................................................................................................................4-14.1.1 Test Masses Required ......................................................................................4-14.2 Operational Test ......................................................................................................4-14.3 Segment Display Test ..............................................................................................4-14.4. Performance Tests ...................................................................................................4-24.4.1 Precision Test ...................................................................................................4-24.4.2 Repeatability Test .............................................................................................4-34.4.3 Linearity Test ....................................................................................................4-54.4.4 Off-Center Load Test ........................................................................................4-54.4.5 Adjusting Off Center Load .................................................................................4-6