OHAUS FD SERIES Service Manual

Also see for FD Series: Instruction manual User guide Quick start guide

Contents

OHAUS FD SERIES Service Manual Manual pdf 5 page image

iTABLE OF CONTENTSCHAPTER 1 INTRODUCTIONPage1. Introduction ......................................................... ................................................. .1-11.1 Service Facilities ...................................................................................................... .1-11.2 Tools and Equipment ............................................................................................... .1-21.2.1 Standard Tools and Test Equipment ................................................................. .1-21.2.2 Special Tools................................................................................................ .1-21.3 Calibration Masses Required ..................................................................................... .1-21.4 Service Strategy ....................................................................................................... .1-3CHAPTER 2 DIAGNOSIS2. Diagnosis ........................................................................................................... .2-12.1 Scale Setup and Examination .................................................................................... .2-12.2 Preliminary Checks .................................................................................................. .2-12.3 Troubleshooting Tables ............................................................................................. .2-12.4 FD Series Scales Error Code Table............................................................................... .2-5CHAPTER 3 SCALE TESTING AND CALIBRATION3. Testing and Calibration ............................................................................................. .3-13.1 Testing the AC Adapter .............................................................................................. .3-13.2 Testing the Membrane Switch .................................................................................... .3-13.3 Testing the Load Cell Assembly .................................................................................. .3-23.3.1 Ramp Test .................................................................................................... .3-23.3.2 Resistance Test ............................................................................................. .3-23.3.3 Excitation and Output Voltage Test .................................................................. .3-23.4 Testing the Main PC Board ........................................................................................ .3-43.4.1 Main PC Board Voltage Measurements ............................................................. .3-43.4.2 Simulator Testing .......................................................................................... .3-53.5 Testing the Battery .................................................................................................... .3-63.5.1 Precautions for Battery Handling ..................................................................... .3-63.5.2 Battery Tests ................................................................................................. .3-63.6 Performance Tests .................................................................................................... .3-83.6.1 Segment Display Test .................................................................................... .3-83.6.2 Repeatability Test .......................................................................................... .3-83.6.3 Off-Center Load Test ..................................................................................... .3-103.6.4 Linearity Test ............................................................................................... .3-113.7 Specifications ......................................................................................................... .3-123.8 Calibration .......................................................................................................... .3-133.8.1 Calibration Points ........................................................................................ .3-133.8.2 Span Calibration .......................................................................................... .3-133.8.3 Linearity Calibration ..................................................................................... .3-143.9 Menu .....................................................................................................................................3-143.91 Menu Structure..........................................................................................................3-14