Lincoln Electric INVERTEC SVM129-B - Manual (Page 71)

SWITCH 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
The Switch Board Test determines if the switch boards are operating properly. This resistance
test is preferable to a voltage test with the machine energized because these boards can be
damaged easily. In addition, it is dangerous to work on these boards with machine power ON.
MATERIALS NEEDED
Analog Volt/ohmmeter (Multimeter)
5/16" Nut driver
TROUBLESHOOTING & REPAIR
F-33 F-33
INVERTEC® STT® & STT® II
WARNING
Note: Component locations and disassembly procedures may
vary slightly on STT II models
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