Switch Board Test - Lincoln Electric INVERTEC V300-PRO SVM105-B 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 pre-
cautions detailed throughout this manual.
If for any reason you do not understand the test procedures or are unable to per-
form the test / repairs safely, contact the Lincoln Electric Service Department for
electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This procedure will determine if the Switch Boards are working properly. This resis-
tance test is preferable to a voltage test with the machine energized because these
boards are easily damaged. Also, it is more dangerous to work on these boards when
power is applied.
MATERIALS NEEDED
ANALOG
Misc. Hand Tools
Wiring Diagram (Section G)
NOTE: Most digital meters will not supply enough current in the
TROUBLESHOOTING & REPAIR

SWITCH BOARD TEST

WARNING
Volt/Ohm Meter (multi-meter)
"ohms" mode to do this test effectively
V300-PRO
.
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