Section F-1
TROUBLESHOOTING & REPAIR SECTION
Troubleshooting & Repair Section ................................................................................Section F
Troubleshooting Guide ................................................................................................F-4 - F-11
Main Transformer Test ..................................................................................................F-14
Chopper Board Test ......................................................................................................F-16
Control Rectifier Test .....................................................................................................F-19
Current Transducer Test ................................................................................................F-29
Oscilloscope Waveforms......................................................................................................F-34
Motor & Gear Box Removal and Replacement.............................................................F-36
Retest after Repair...............................................................................................................F-57
TABLE OF CONTENTS
POWER MIG 300
Section F-1