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TROUBLESHOOTING & REPAIR
F-50 F-50
LN-9 Wire Feeder
WARNING
DIGITAL METER AND METER PC BOARD REMOVAL AND
REPLACEMENT
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 elec-
trical 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 troubleshoot-
ing assistance before you proceed. Call 216-383-2531 or 1-800-833-9353 (WELD).
DESCRIPTION
The following procedure will help the technician remove the digital meter and meter PC board
for repair or replacement.
MATERIALS NEEDED
Slot head screw driver
5/16" nut driver
Phillips head screw driver