OHAUS EB SERIES, Service Manual

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TABLE OF CONTENTS
Ohaus Corporation www.ohaus.com ii EB Series Scales Service Manual
CHAPTER 5 DRAWINGS AND PARTS LISTS
Page No.
5. Drawings and Parts Lists..........................................................................................5-1
Appendix A SERVICE MODES
A.1 Entering the Service Menu ..................................................................................... A-1
A.2 Service Calibration .................................................................................................. A-1
A.3 Scale Configuration ................................................................................................. A-2
LIST OF TABLES
TABLE NO. TITLE Page No.
1-1 Calibration Masses ..............................................................................................1-2
1-2 Specifications ......................................................................................................1-3
1-3 Menu Structure ....................................................................................................1-4
2-1 Scale Will Not Turn On With AC Adapter .............................................................2-1
2-2 Scale Will Not Turn On Using Battery Power .......................................................2-2
2-3 Scale Does Not Respond To Front Panel Controls ..............................................2-3
2-4 No Display or Partial Display ...............................................................................2-3
2-5 Balance Reading Incorrect or Unstable ................................................................2-4
2-6 Cannot Calibrate the Scale ..................................................................................2-4
2-7 E B Series Scales Error Codes .............................................................................2-5
2-8 Membrane Switch Pin Connections .....................................................................2-6
2-9 Load Cell Resistance Reading .............................................................................2-7
2-10 Load Cell Output Reading ....................................................................................2-8
3-1 Load Cell Screw Torque Settings ....................................................................... 3-11
3-2 Load Cell Overload Protection Stop Gap Settings.............................................. 3-13
4-1 Repeatability Worksheet ......................................................................................4-2
4-2 Calibration Points.................................................................................................4-6
5-1 EB Series Scales: Housing and Parts ..................................................................5-3
A-1 Scale Resolution Settings ................................................................................... A-2
LIST OF ILLUSTRATIONS
FIGURE NO. TITLE Page No.
2-1 Membrane Switch Connector ...............................................................................2-6
2-2 EB Interconnections: Version 1 ............................................................................2-8
2-3 EB Interconnections: Version 2 ............................................................................2-8
3-1 Retaining Screws on Bottom of Housing ..............................................................3-1
3-2 Removing the Top Housing .................................................................................3-2
3-3 Ribbon Cable from Main PCB to Display PCB .....................................................3-2
3-4 Disconnecting the Membrane Switch Cable .........................................................3-3
3-5 Battery Terminal Connector .................................................................................3-4
3-6 Main PC Board Screws and Washers ..................................................................3-4
3-7 Main PCB, Version 1 ...........................................................................................3-5
3-8 Main PCB, Version 2 ...........................................................................................3-5
3-9 Display Cable installed on Main PCB ...................................................................3-5
3-10 Ribbon Cable from Main PCB to Display PCB .....................................................3-7
3-11 Disconnecting Membrane Switch Cable from Display PCB ..................................3-7
3-12 Screws connecting Display PCB to Bottom Housing ............................................3-7
3-13 Feet on Bottom of Scale ......................................................................................3-9
3-14 Load Cell Retaining Screw Locations...................................................................3-9
3-15 Load Cell Mounting Bolt Locations ..................................................................... 3-11
3-16 Load Cell Frame Mounting Bolt Locations ......................................................... 3-12