Voltage Sense Pc Board Test - Lincoln Electric POWER WAVE SVM135-B Service Manual

F-55 TROUBLESHOOTING AND REPAIR F-55

VOLTAGE SENSE PC BOARD TEST

WARNING
Service and repair should only be performed by Lincoln Electric factory trained
personnel. Unauthorized repairs performed on this equipment may result in dan-
ger to the technician or machine operator and will invalidate your factory warran-
ty. 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 per-
form the test/repairs safely, contact the Lincoln Electric service department for
technical troubleshooting assistance before you proceed. Call 216-383-2531 or
1-800-833-9353(WELD).
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TEST DESCRIPTION
This test will help determine if the voltage sensing board is receiving the correct activa-
tion signal from the control board and also if the voltage sensing board is processing
arc voltage sensing information.
This procedure takes approximately 13 minutes to perform.
MATERIALS NEEDED
3/8 in. nutdriver
Volt-Ohmmeter
POWER WAVE 455/POWER FEED 10