Lincoln Electric POWER MIG 11521 - Manual (Page 57)

Service and repair should be performed only by Lincoln Electric factory trained personnel.
Unauthorized repairs performed on this equipment may result in danger to the technician
or machine operator and will invalidate your factory warranty. For your safety and to avoid
electrical shock, please observe all safety notes and precautions detailed throughout this
manual.
If for any reason you do not understand the test procedures or are unable to perform the
test/repairs safely, contact the Lincoln Electric Service Department for electrical trou-
bleshooting assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This test will determine if a diode is “shorted” or “leaky”. See the machine waveform
section in this manual for normal and abnormal output wave forms.
MATERIALS NEEDED
Analog Volt-ohmmeter or Diode Tester
3/8” Nutdriver
1/2” Nutdriver
OUTPUT BRIDGE RECTIFIER TEST
TROUBLESHOOTING AND REPAIR F-19 F-19
Power MIG® 215XT
WARNING
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