| Lincoln Electric SVM125-A

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Section F-1

TROUBLESHOOTING & REPAIR SECTION

Troubleshooting & Repair Section	Section F
How to Use Troubleshooting Guide	F-2
PC Board Troubleshooting Procedures	F-3
Troubleshooting Guide	F4 - F-12
Test Procedures	F-13
Alternator Rotor Test	F-13
Shunt Field Winding Test	F-17
Idler Solenoid Test	F-20
Engine Throttle Adjustment Test	F-22
Flashing the Fields	F-26
Oscilloscope Waveforms	F-28
Normal Open Circuit Voltage Waveform (115VAC Supply)	F-28
Normal Open Circuit DC Weld Voltage Waveform	F-29
Typical DC Weld Output Voltage Waveform	F-30
Replacement Procedures	F-31
Alternator Rotor Removal and Replacement	F-31
Alternator Stator Removal and Replacement	F-38
Generator Frame Removal and Replacement	F-43
Generator Armature Removal and Replacement	F-46
Retest After Repair	F-48