Lincoln Electric SVM167-A service manual Table of Contents, Troubleshooting And Repair Section

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Section F	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-11
Main Transformer Test	F-11
Wire Drive Motor and Wire Speed Potentiometer Test	F-15
Output Bridge Rectifier Test	F-19
Contactor Test	F-21
Voltage Waveforms	F-23
Component Replacement Procedures	F-27
Control Board Replacement	F-27
Wire Drive Motor Assembly Replacement	F-29
Output Diode Bridge Rectifier Replacement	F-33
Output Capacitors Replacement	F-37
Main Transformer Replacement	F-41
Fan Blade/Motor Replacement	F-47
Output Contactor Replacement	F-49
Retest After Repair	F-52

WARNING

ELECTRIC SHOCK can kill.

•Never work on the inside of the machine without removing 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.

POWER MIG® 215