Lincoln Electric SVM179-B service manual Table of Contents Troubleshooting & Repair

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F-1 TABLE OF CONTENTS - TROUBLESHOOTING & REPAIR F-1

Troubleshooting and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-1

How to Use Troubleshooting Guide	. .F-2
PC Board Troubleshooting Procedures	. .F-3
Troubleshooting Guide	. .F-4
Test Procedures	. .F-9
Case Removal	. .F-9
Gas Solenoid Test	.F-11
Contactor Test	.F-13
Drive Motor and Tach Feedback Test	.F-15
Motor Overload Test	F-17
Contactor Removal and Replacement	.F-19

Front Panel Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-23 Wire Drive Motor and Gear Box Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-25 PC Board Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-29 Gas Solenoid Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-31

Retest and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F-33

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