Troubleshooting and Repair

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SECT	ION F-1		TROUBLESHOOTING AND REPAIR	SECTION F-1

			TABLE OF CONTENTS
		-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-5
	Power Wave . . . .		. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . F-5
	Power Feed . . . .		. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . F-13
Power Wave 455 Control Board LED Definitions				. . . . . F-22
Test Procedures . . . .			. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . F-23
	Input Filter Capacitor Discharge Procedure			. . . . . F-23
	Switch Board Test		. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . F-25
	Output Rectifier Test			. . . . . F-29
	Input Rectifier Test			. . . . . F-31
	Input Contactor Test			. . . . . F-35
	Auxiliary Transformer No. 2 Test			. . . . . F-37
	Auxiliary Transformer No. 1 Test			. . . . . F-39
	Power Board Test		. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . F-43
	Current Transducer Test			. . . . . F-47
	Drive Motor Test .		. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . F-51
	Tach Feedback Test			. . . . . F-53
	Voltage Sense PC Board Test			. . . . . F-55
	Dual Encoder PC Board Test			. . . . . F-57
	Control Cable Continuity Test			. . . . . F-59
Component Replacement Procedures				. . . . . F-61
	Gas Solenoid Removal and Replacement			. . . . . F-61
	Wire Feeder Control Board Removal And Replacement			. . . . . F-63
	Tach (Hall Effect) Assembly Removal and Replacement			. . . . . F-65
	Gear Box and Drive Motor Removal and Replacement			. . . . . F-67
	Switch Board and Filter Capacitor Removal and Replacement			. . . . . F-71
	Meter Accuracy Check			. . . . . F-74
	Control or Power Board Removal and Replacement			. . . . . F-75
	Auxiliary Transformer No. 1 Removal and Replacement Procedure			. . . . . F-79
	Main Input Contactor Removal and Replacement			. . . . . F-83
	Input Rectifier Removal and Replacement			. . . . . F-87
	Output Rectifier and Module Removal and Replacement			. . . . . F-89
Troubleshooting Flowcharts				. . . . . F-93
	Power Source Error Interpretation Guide			. . . . . F-93
	Performance Troubleshooting Guide			. . . . . F-94
	Functional Troubleshooting Guide			. . . . . F-95

Lincoln Electric SVM135-B service manual Troubleshooting and Repair

Models: SVM135-B

TABLE OF CONTENTS

-TROUBLESHOOTING AND REPAIR SECTION-

POWER WAVE 455/POWER FEED 10