Table Of Contents - OHAUS PA64 Service Manual

CHAPTER 1 GETTING STARTED
1.1 Introduction ..............................................................................................................1-1
1.2 Service Facilities ......................................................................................................1-1
1.3 Tools and Test Equipment Required ........................................................................1-2
1.3.1 Special Tools ....................................................................................................1-2
1.3.2 Standard Tools and Test Equipment .................................................................1-2
1.4 Specifications ...........................................................................................................1-2
1.5 Balance Operation ...................................................................................................1-5
1.5.1 Overview of the Controls ...................................................................................1-5
1.5.2 Overview of the Display Indicators ....................................................................1-6
1.5.3 Power On ..........................................................................................................1-7
1.5.4 Power Off ..........................................................................................................1-7
1.5.5 Menu Setup ......................................................................................................1-7
1.5.6 Menu Structure .................................................................................................1-7
1.5.7 The Load Cell ...................................................................................................1-8
1.6 Connecting the RS232 Interface ..............................................................................1-9
1.7 RS232 Commands ................................................................................................. 1-10
CHAPTER 2 TROUBLESHOOTING
2.1 Troubleshooting .......................................................................................................2-1
2.1.1 General Procedures for Troubleshooting ..........................................................2-1
2.2 Diagnostic Guide ......................................................................................................2-1
2.2.1 Diagnosis ..........................................................................................................2-1
2.3 Error Codes..............................................................................................................2-4
CHAPTER 3 MAINTENANCE PROCEDURES
3.1 Preventive Maintenance ...........................................................................................3-1
3.1.1 Preventive Maintenance Checklist ....................................................................3-1
3.2 Opening the Balance ................................................................................................3-1
3.2.1 Variations in Opening Pioneer Models ..............................................................3-2
3.3 Load Cell Removal and Disassembly .......................................................................3-3
3.3.1 Variations in Pioneer Load Cells .......................................................................3-3
3.3.2 Disassembly of Precision Balances with Internal Calibration .............................3-4
3.3.3 Removing Internal Calibration Weights .............................................................3-5
3.3.4 Servicing the Internal Calibration Mechanism ...................................................3-5
3.3.5 Reassembling the Internal Calibration Mechanism ............................................3-6
3.3.6 Disassembly of Precision Balances with InCal Mechanism ...............................3-6
3.3.7 Removing the Load Cell - Precision Balances ..................................................3-7
3.3.8 Load Cell Disassembly - Precision Balances ....................................................3-8
3.3.9 Position Sensor Board Removal/Replacement/Adjustment - Precision ........... 3-13
3.3.10 Main Printed Circuit Board (PCB) Replacement - All Balances ....................... 3-14
3.3.11 Load Cell Reassembly - Precision Balances .................................................. 3-15
3.3.12 Removing the InCal Mechanism from InCal Analytical Balances ..................... 3-19
3.3.13 Removing Internal Calibration Weights and Components ............................... 3-19
3.3.14 Re-Installing Internal Calibration Components ................................................ 3-21
3.3.15 Load Cell Removal/Installation - Analytical Balances ..................................... 3-21
3.3.16 Disassembling Analytical Load Cells ............................................................... 3-22
3.3.17 Position Sensor PC Board Removal/Replacement/Adjustment - Analytical ..... 3-28
3.3.18 Reassembling Analytical Load Cells ............................................................... 3-29
3.3.19 Block Style Load Cell Removal & Replacement .............................................. 3-34
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TABLE OF CONTENTS

i Pioneer™ Balances Service Manual
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