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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 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 1-888-935-3877.
DESCRIPTION
This procedure will aid the technician in the removal and replacement of either the
Control Board the Feed Head Board, the Auxiliary Driver Board or the Voltage Sense
Board.
MATERIALS NEEDED
Misc. Hand Tools
Anti-static wrist strap
CAUTION PC Boards can be damaged by static electricity.
• Remove your bodyʼs static charge before opening the static-shielding bag.
Wear an anti-static wrist strap. For safety, use a 1 MΩ resistive cord con -
nected to a grounded part of the equipment frame.
• If you donʼt have a wrist strap, touch an unpainted, grounded, part of the
equipment frame. Keep touching the frame to prevent static build-up. Be
sure not to touch any electrically live parts at the same time.
• Tools which come in contact with the PC Board must be either conductive,
anti-static or static-dissipative.
CONTROL, FEED HEAD, VOLTAGE SENSE, OR AUXILIARY
DRIVER BOARD REMOVAL AND REPLACEMENT
TROUBLESHOOTING & REPAIR
F-53 F-53
POWER WAVE 655/R
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WARNING