OHAUS EB30 - Default Chapter; Table of Contents

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TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION
Page
1. Introduction ...................................................................................................... 1-1
1.1 Service Facilities ................................................................................................. 1-1
1.2 Tools and Equipment .......................................................................................... 1-2
1.2.1 Standard Tools and Test Equipment ............................................................ 1-2
1.2.2 Special Tools........................................................................................... 1-2
1.3 Calibration Masses Required ................................................................................ 1-2
1.4 Service Strategy .................................................................................................. 1-2
CHAPTER 2 DIAGNOSIS
2. Diagnosis ...................................................................................................... 2-1
2.1 Scale Setup and Examination ............................................................................... 2-1
2.2 Preliminary Checks ............................................................................................. 2-1
2.3 Troubleshooting Tables ........................................................................................ 2-1
2.4 EB Series Scales Error Code Table ........................................................................ 2-5
CHAPTER 3 SCALE TESTING AND CALIBRATION
3. Testing and Calibration ........................................................................................ 3-1
3.1 Testing the AC Adapter ......................................................................................... 3-1
3.2 Testing the Membrane Switch ............................................................................... 3-1
3.3 Testing the Load Cell Assembly ............................................................................. 3-2
3.3.1 Resistance Test ........................................................................................ 3-2
3.3.2 Excitation and Output Voltage Test ............................................................. 3-2
3.4 Testing the Main PC Board ................................................................................... 3-4
3.4.1 Main PC Board Voltage Measurements........................................................ 3-4
3.4.2 Simulator Testing ..................................................................................... 3-5
3.5 Testing the Battery ............................................................................................... 3-6
3.5.1 Precautions for Battery Handling ................................................................ 3-6
3.5.2 Battery Tests ............................................................................................ 3-6
3.6 Performance Tests ............................................................................................... 3-8
3.6.1 Segment Display Test ............................................................................... 3-8
3.6.2 Repeatability Test ..................................................................................... 3-8
3.6.3 Off-Center Load Test ............................................................................... 3-10
3.6.4 Linearity Test ......................................................................................... 3-11
3.7 Specifications ................................................................................................... 3-13
3.8 Calibration .................................................................................................... 3-14
3.8.1 Calibration Points .................................................................................. 3-14
3.8.2 Span Calibration .................................................................................... 3-14
3.9 Scale Settings .................................................................................................. 3-15