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Troubleshooting & Repair Section.................................................................................Section F
How to Use Troubleshooting Guide ......................................................................................F-2
Troubleshooting Guide.................................................................................................F2 - F-10
Test Procedures
Rotor Voltage Test.........................................................................................................F-11
Rotor Resistance Test...................................................................................................F-13
Engine Throttle Adjustment Test...................................................................................F-16
Oscilloscope Waveforms
Normal Open Circuit Weld Voltage Waveform..............................................................F-19
Normal Open Circuit Weld Voltage Waveform (115 VAC Supply).................................F-20
Typical Weld Output Waveform - Machine Loaded......................................................F-21
Replacement Procedures
Brush Removal and Replacement.................................................................................F-22
Rheostat Removal and Replacement...........................................................................F-25
Capacitor and Diode Bridge Removal and Replacement .............................................F-27
Stator/Rotor Removal and Replacement (Kit S20925)..................................................F-30
Retest After Repair...............................................................................................................F-35
TABLE OF CONTENTS
- TROUBLESHOOTING & REPAIR SECTION -
Section F Section F
POWER-ARC 4000