Lincoln Electric SVM188-A Service Manual page 53

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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 to determine if the wiring and connections are correct from the 14 Pin
MS connector and the Terminal Strip to the Firing Board. It will aalso determine the pres-
ence of the 42vac trigger supply voltage.
MATERIALS NEEDED
Multi-meter
Misc. Hand Tools
Wiring Diagram or Machine Schematic
TROUBLESHOOTING AND REPAIR
INTERNAL TRIGGER CIRCUIT TEST
WARNING
DC-600
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