Lincoln Electric POWER FEED SVM185-A - Manual (Page 89)

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 determine if the tach unit is receiving the correct supply voltage from the control
board, and also if the tach unit is sending feedback information to the control board.
MATERIALS NEEDED
3/8" in. nut driver
Volt-Ohm Meter
TACH FEEDBACK TEST
TROUBLESHOOTING AND REPAIR F-15 F-15
POWER FEED® 25M
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