Lincoln Electric POWER WAVE 355M - Manual (Page 61)

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 “power section” of the switch boards are functioning
correctly. This test will NOT indicate if the entire PC board is functional. This resistance
test is preferable to a voltage test with the machine energized because this board can be
damaged easily. In addition, it is dangerous to work on this board with the machine ener-
gized.
MATERIALS NEEDED
Analog Volt/Ohmmeter
5/16 in. Wrench
7/16 in. Wrench
MAIN SWITCH BOARD TEST
TROUBLESHOOTING AND REPAIR F-15 F-15
POWER WAVE 355M/405M
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