Troubleshooting & repair, Warning – Lincoln Electric INVERTEC POWER WAVE 450 SVM112-B User Manual

Page 235

PRINTED CIRCUIT BOARD REMOVAL AND REPLACEMENT

(CONTROL BOARD, POWER BOARD,

AND PROTECTION BOARD)

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 trou-
bleshooting assistance before you proceed. Call 1-800-833-9353 (WELD).

DESCRIPTION

The following procedure will aid the technician in removing the control, power, or protection
printed circuit boards for maintenance or replacement.

MATERIALS NEEDED

5/16" Nut driver
3/8" Nut driver
Machine Wiring Diagram in the Electrical Diagrams section of this manual

WARNING

TROUBLESHOOTING & REPAIR

F-175

POWER WAVE 450