Lincoln Electric POWER WAVE SVM173-A - Manual (Page 47)

Troubleshooting & Repair ...................................................................................................Section F
How to Use Troubleshooting Guide ...........................................................................................F-2
PC Board Troubleshooting Procedures.......................................................................................F-3
Troubleshooting Guide ................................................................................................................F-4
Test Procedures ..........................................................................................................................F-9
Input Filter Capacitor Discharge Procedure .........................................................................F-9
Switch Board Test ...............................................................................................................F-11
Input Rectifier Test .............................................................................................................F-15
Input Contactor Test............................................................................................................F-19
DC Bus Power Supply PC Board Test............................................................................ .. ..F-23
Power Board Test ..............................................................................................................F-27
Input Board Test .................................................................................................................F-31
STT Chopper Board Test ....................................................................................................F-35
Power Wave Current Transducer Test ...............................................................................F-39
STT Current Transducer Test ............................................................................................F-43
Output Rectifier Test ..........................................................................................................F-47
Auxiliary Transformer No. 1 Test .......................................................................................F-49
Auxiliary Transformer No. 2 Test .......................................................................................F-53
Component Removal and Replacement Procedures................................................................F-55
Input Rectifier Removal and Replacement ........................................................................F-55
Input Contactor Removal and Replacement ......................................................................F-57
Auxiliary Transformer No. 1 Removal and Replacement Procedure..................................F-59
Auxiliary Transformer No. 2 Removal and Replacement Procedure..................................F-63
Control, Feed Head, or Voltage Sense PC Board Removal and Replacement .................F-67
Gateway PC Board Removal and Replacement ...............................................................F-71
STT Current Transducer Removal and Replacement ...................................................... F-73
Power Wave Current Transducer Removal and Replacement.......................................... F-77
Output Rectifier, STT Chopper Board and Rectifier Module Removal
and Replacement ........................................................................................................F-81
Switch Board and Filter Capacitor Removal and Replacement .........................................F-85
Retest after Repair ...................................................................................................................F-88
Section F-1 Section F-1
TABLE OF CONTENTS
- TROUBLESHOOTING & REPAIR SECTION -
POWER WAVE 455M/MSTT
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