Lincoln Electric INVERTEC SVM129-B - Manual (Page 79)

POWER BOARD TEST
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 elec-
trical 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 troubleshoot-
ing assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This test will help determine if the Power PC Board is receiving the correct AC voltages and
also if the correct DC voltages are being generated on the Power PC Board.
MATERIALS NEEDED
5/16" Nut driver
Volt/ohmmeter (Multimeter)
Wiring diagram
TROUBLESHOOTING & REPAIR
F-41 F-41
INVERTEC® STT® & STT® II
WARNING
Note: Component locations and disassembly procedures may
vary slightly on STT II models
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