TABLE OF CONTENTS - TROUBLESHOOTING AND REPAIR
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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
