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HIGH FREQUENCY CIRCUIT DISABLE PROCEDURE
TROUBLESHOOTING AND REPAIR
F-15 F-15
PRECISION TIG® 225
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WARNING
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 procedure will disable the high frequency circuit. The technician will then be able to
take voltage measurements without the possibility of high frequency damage to his test
equipment.
MATERIALS NEEDED
3/8” Nutdriver
5/64” Allen type wrench
.020” feeler gauge
HIGH VOLTAGE IS STILL PRESENT IN THE HIGH FREQUENCY CIRCUIT.
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WARNING