YOKOGAWA DAQSTATION DX100, Service Manual, Page: 6 / 41

SM 04L01A01-01E 5
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Contents
Important Notice To the User ...............................................................................................................1
Introduction ...........................................................................................................................................2
Safety Precautions ............................................................................................................................... 2
Overview of This Manual ......................................................................................................................4
Chapter 1 Principles of Operation
1.1 Block Diagram of the DX .......................................................................................................... 1-1
1.2 Input Section ............................................................................................................................. 1-1
1.2.1 A/D Assembly ............................................................................................................... 1-1
1.2.2 Input Terminal ............................................................................................................... 1-1
1.2.3 Scanner Assembly ........................................................................................................ 1-2
1.3 Data Storage Functions ............................................................................................................ 1-2
1.4 Display Unit ............................................................................................................................... 1-2
1.5 Calculation Function ................................................................................................................. 1-2
1.6 Alarm Function .......................................................................................................................... 1-2
1.7 Other Functions ........................................................................................................................ 1-2
Chapter 2 Testing
2.1 Acceptance Test ........................................................................................................................ 2-1
2.2 Self Diagnostic Test .................................................................................................................. 2-1
2.3 Performance Test ...................................................................................................................... 2-2
2.3.1 Before You Begin .......................................................................................................... 2-2
2.3.2 Measurement Accuracy Test ......................................................................................... 2-3
2.3.3 Reference Junction Compensation Accuracy Test ....................................................... 2-4
Chapter 3 Replacing Parts
3.1 Replaceable Parts .................................................................................................................... 3-1
3.2 When Repair is Necessary ....................................................................................................... 3-1
3.3 Recommended Replacement Periods for Worn Parts .............................................................. 3-2
3.4 Replacing the Fuse ................................................................................................................... 3-3
3.5 Replacing the Battery ............................................................................................................... 3-4
Chapter 4 Adjustments
4.1 Before You Begin ...................................................................................................................... 4-1
4.2 AD Board Offset and Gain Adjustment ..................................................................................... 4-2
4.2.1 Manual Adjustment ....................................................................................................... 4-2
4.2.2 PC Controlled Adjustment ............................................................................................ 4-5
Chapter 5 Troubleshooting
5.1 Procedure ................................................................................................................................. 5-1
5.2 Flow Chart ................................................................................................................................ 5-1
5.3 Troubleshooting Checklist ......................................................................................................... 5-2
Chapter 6 Schematic Diagram
Chapter 7 Customer Maintenance Parts List
7.1 DX100 Customer Maintenance Parts List ................................................................................. 7-1
7.2 DX100 Standard Accessories ................................................................................................... 7-8
7.3 DX200 Customer Maintenance Parts List ................................................................................. 7-9
7.4 DX200 Standard Accessories ................................................................................................. 7-16