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TROUBLESHOOTING & REPAIR
QUICK VOLTAGE CALIBRATION
WARNING
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
PROCEDURE DESCRIPTION
This procedure is a quick way of calibrating the voltage sensing points (leads), provided that the existing display board is capable of displaying the calibration numbers that are stored in the display board.
MATERIALS NEEDED
A known “good” replacement display board
A Test and Calibration overlay
This procedure takes approximately 15 minutes to perform.
