OHAUS DISCOVERY BALANCE, Руководство по обслуживанию

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TABLE OF CONTENTS
Page No.
CHAPTER 1 INTRODUCTION
1.1 Introduction ................................................................................................................1-1
1.2 Service
Facilities........................................................................................................1-1
1.3 Special Tools and Test Equipment Required ............................................................1-2
1.4 Test Masses Required...............................................................................................1-3
1.5 Specifications.............................................................................................................1-4
CHAPTER 2 DIAGNOSIS
2.1 Troubleshooting .........................................................................................................2-1
2.2 Diagnosis
Guide ........................................................................................................2-1
2.2.1 Diagnosis............................................................................................................2-1
2.3 Table of Error Codes ................................................................................................2-6
CHAPTER 3 REPAIR PROCEDURES
3.1 Repair Procedures.....................................................................................................3-1
3.1.1 Housing Disassembly/Opening the Balance ......................................................3-2
3.1.2 Display Removal & Replacement .......................................................................3-5
3.1.3 Main Printed Circuit Board (PCB) Removal & Replacement ..............................3-8
3.1.4 Incal Weight Hardware Disassembly................................................................3-10
3.1.5 Removing and Replacing Calibration Motor Assembly ....................................3-13
3.2 Load Cell Cover Removal and Disassembly ...........................................................3-15
3.2.1 Load Cell Removal ..........................................................................................3-15
3.2.2 Load Cell Disassembly .....................................................................................3-20
3.2.3 Load Cell Cleaning ...........................................................................................3-30
3.2.4 Load Cell Assembly .........................................................................................3-31
3.2.5 Installing Load Cell ...........................................................................................3-45
CHAPTER 4 TESTING
4.1. Testing .......................................................................................................................4-1
4.1.1 Operational Test .................................................................................................4-1
4.1.2. Models Segment Display Test............................................................................4-1
4.2. Load Cell Performance Tests ....................................................................................4-1
4.2.1 Off-Center Load Test..........................................................................................4-1
4.2.2 Adjusting Off Center Load ..................................................................................4-2
4.2.3 Repeatability
Test...............................................................................................4-4
4.2.4 Remediation .......................................................................................................4-4
4.2.5 Linearity
Test ......................................................................................................4-5
4.3 RS232 Interface Test.................................................................................................4-6
4.4 RS232 Connection.....................................................................................................4-6
4.4.1 Connecting the RS232 Interface ........................................................................4-6
4.4.2 RS232
Commands .............................................................................................4-8
4.5 Print Test ...................................................................................................................4-9
4.6 Testing the AC Adapter .............................................................................................4-9
CHAPTER 5 PARTS LISTS & DIAGRAMS
5.1 Discovery Housing.....................................................................................................5-1
5.2 Discovery Display Assembly......................................................................................5-2
5.3 Discovery Internal Parts Outside Load Cell ...............................................................5-3
5.4 Discovery Load Cell Parts .........................................................................................5-4
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