Chopper Module Resistance Test - Lincoln Electric VANTAGE 400 Service Manual

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Service and repair should be performed by only 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 help determine if the chopper module is shorted. This test can only detect
some problems in the "Power" section of the module. Problems in some other PC board
components may not be detected.
MATERIALS NEEDED
Miscellaneous hand tools
Digital Ohmmeter
Wiring diagram
TROUBLESHOOTING & REPAIR

CHOPPER MODULE RESISTANCE TEST

WARNING
VANTAGE® 400
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