Tach Pc Board Removal And Replacement - Lincoln Electric NA-5N Service Manual

F-77 F-77
TROUBLESHOOTING & REPAIR

TACH PC BOARD REMOVAL AND REPLACEMENT

WARNING
Service and repair should be performed only by Lincoln Electric factory trained per-
sonnel. Unauthorized repairs performed on this equipment could result in danger to
the technician or the machine operator and will invalidate your factory warranty. For
your safety and to avoid electrical shock, please observe all safety notes and precau-
tions detailed throughout this manual.
If for any reason you do not understand the test procedures or are unable to perform
the tests/repairs safely, contact the Lincoln Electric service department for technical
troubleshooting assistance before you proceed.
Call (216) 383-2531 or (800) 833-9353 (WELD).
_____________________________________________________________
DESCRIPTION
The following procedure will help the technician remove the Tach PC board and related com-
ponents for repair or replacement.
This procedure takes approximately 9 minutes to perform.
MATERIALS NEEDED
5/16" Nutdriver
Slot head screwdriver
Phillips head screwdriver
3/8" Wrench
NA-5