Control Pc Board Removal And Replacement - Lincoln Electric WIRE-MATIC 255 SVM 119-A Service Manual

F-27

CONTROL PC BOARD REMOVAL AND REPLACEMENT

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 pre-
cautions 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).
_____________________________________________________________
Printed Circuit Boards can be damaged by static electricity. Follow static handling
guidelines detailed in "PC Board Troubleshooting Procedures" at the beginning of
this chapter.
_______________________________________________________
REMOVAL AND REPLACEMENT PROCEDURE
MATERIALS NEEDED
5/16" Nutdriver.
Phillips head screwdriver.
Static electricity grounding strap.
TROUBLESHOOTING & REPAIR
WIRE-MATIC 255
WARNING
CAUTION
F-27