Power Board Test - Lincoln Electric SQUARE WAVE TIG 355 Service Manual

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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 the correct input voltages are being supplied to the Power
Board and also if the proper voltages are being generated by the Power Board.
MATERIALS NEEDED
Volt/Ohmmeter (Multimeter)
5/16" Nutdriver
Power Board Voltage Test Chart
Square Wave TIG Wiring Diagram (Located In The Electrical Diagrams Section Of
This Manual)
TROUBLESHOOTING AND REPAIR

POWER BOARD TEST

WARNING
SQUARE WAVE TIG 355
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