Lincoln Electric SVM160-B service manual Table of Contents Troubleshooting & Repair Section

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Section F-1Section F-1

TABLE OF CONTENTS

TROUBLESHOOTING & REPAIR SECTION

Troubleshooting & Repair Section	Section F
How to Use Troubleshooting Guide	F-2
PC Board Troubleshooting Procedures	F-3
Troubleshooting Guide	F-4 - F-11
Chopper Board Capacitor Discharge Procedure	F-12
Main Transformer Test	F-14
Chopper Board Test	F-16
Control Rectifier Test	F-19
Output Rectifier Assembly Test	F-21
Wire Drive Motor and Tachometer Feedback Test	F-23
Encoder PC Board Test (10562 & Above)	F-26
Current Transducer Test	F-29
Power Mig Scrolling Dashes Test	F-32
Oscilloscope Waveforms	F-34
Removal and Replacement Procedures	F-36
Motor & Gear Box Removal and Replacement	F-36
Output Rectifier Removal and Replacement	F-40
Chopper Board Assembly Removal and Replacement	F-43
Main Transformer and Output Choke Removal and Replacement	F-46
Fan Motor Assembly Removal and Replacement	F-50
Voltage & Current Calibration Procedure	F-52
Retest after Repair	F-57

POWER MIG 300