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INVERTER BOARD VOLTAGE 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
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 determine if the main inverter board is receiving the correct input volt-
ages and if the correct regulated voltages are being processed and maintained by the
main inverter board.
MATERIALS NEEDED
Volt/Ohmmeter
Wiring Diagram X0701 and X0519
Phillips Screwdriver
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts such as output terminals or inter-
nal wiring.
• Insulate yourself from the work and ground.
• Always wear dry insulating gloves.
TROUBLESHOOTING & REPAIR
F-23 F-23
INVERTEC® V155-S
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WARNING
WARNING