Troubleshooting and Repair Section | Lincoln Electric SVM 106-A

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TABLE OF CONTENTS	Section F
- TROUBLESHOOTING AND REPAIR SECTION -

Troubleshooting And Repair	Section F
How To Use Troubleshooting Guide	F-2
PC Board Troubleshooting Procedures	F-3
Troubleshooting Guide	F-4
Test Procedures	F-12
Control Relay Test	F-12
Trigger Transformer Test	F-14
Control Cable Continuity Test	F-16
Component Replacement Procedures	F-18
Wire Feed Speed Potentiometer Replacement	F-18
Circuit Breaker Replacement	F-21
Ground Lead Protector Push Button Switch Replacement	F-23
Trigger Transformer Replacement	F-25
Ground Lead Protector Reed Switch Replacement	F-27
Control PC Board Replacement	F-29
Main Power Resistor (R1) Replacement	F-32
Control Relay Replacement	F-35
Wire Drive Assembly and Components Replacement	F-37
Swing Arm Assembly Replacement for Two-Roll Wire Feeders . . . .	F-41
Swing Arm Assembly Replacement for Four-Roll Wire Feeders . . .	F-44
Gas Solenoid and Connections Replacement	F-47
Retest After Repair	F-50

WARNING

ELECTRIC SHOCK can kill.

•Never work on the inside of the machine without turning off the input power. You can receive a life threatening electrical shock if you fail to do this. Only qualified technicians should perform installation, maintenance, and troubleshooting work on the machine.

Lincoln Electric SVM 106-A service manual Troubleshooting and Repair Section

Models: SVM 106-A

TABLE OF CONTENTS

- TROUBLESHOOTING AND REPAIR SECTION -

ELECTRIC SHOCK can kill.

LN-7 GMA WIRE FEEDER