TABLE OF CONTENTS
Ohaus Corporation www.ohaus.com
i
Pioneer
™ Balances Service Manual
Page No.
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
Summary of Contents for Pioneer PA64
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