Pc Board Removal And Replacement - Lincoln Electric LF-72/74 Service Manual

F-15 F-15
TROUBLESHOOTING AND REPAIR

PC BOARD REMOVAL AND REPLACEMENT

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 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 aid the technician in the removal and replacement of the control pc
board.
MATERIALS NEEDED
5/16 in. nut driver
3/8 in. nut driver
Anti-static strap
LF-72/74