Lincoln Electric 355M 사용자 설명서

TABLE OF CONTENTS - TROUBLESHOOTING AND REPAIR

F-1

Retur

POWER WAVE 355M/405M

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

How to Use Troubleshooting Guide..........................................................................................................F-2

PC Board Troubleshooting Procedures and Replacement .......................................................................F-3

Troubleshooting Guide .............................................................................................................................F-4

Test Procedures

Input Filter Capacitor Discharge Procedure .....................................................................................F-13

Main Switch Board Test....................................................................................................................F-15

Input Rectifier Test............................................................................................................................F-19

Power Board Test .............................................................................................................................F-23

DC Bus Board Test ...........................................................................................................................F-27

Output Rectifier Modules Test ..........................................................................................................F-31

Auxiliary Transformer Test.................................................................................................................F-35

Current Transducer Test ...................................................................................................................F-39

Fan Control and Motor Test..............................................................................................................F-43

Replacement Procedures

Control Board Removal and Replacement.......................................................................................F-47

Main Switch Board Removal and Replacement...............................................................................F-51

Snubber Board Removal and Replacement.....................................................................................F-55

Power Board Removal and Replacement ........................................................................................F-57

DC Bus Board Removal and Replacement ......................................................................................F-61

Input Rectifier Removal and Replacement.......................................................................................F-65

Output Rectifier Modules Removal and Replacement .....................................................................F-69

Current Transducer Removal and Replacement ..............................................................................F-73

Retest after Repair............................................................................................................................F-78