Troubleshooting & repair – Lincoln Electric CLASSIC I SVM134-A User Manual
Page 73
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TROUBLESHOOTING & REPAIR
F-29
F-29
CLASSIC I
This is the typical auxiliary output
voltage generated from a properly
operating machine. Note that each
vertical division represents 50 volts
and that each horizontal division
represents 2 milliseconds in time.
Note: Scope probes connected at
machine 115VDC receptacle.
SCOPE SETTINGS
Volts/Div .....................50V/Div.
Horizontal Sweep .....2 ms/Div.
Coupling.............................DC
Trigger .........................Internal
NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM (115VDC SUPPLY)
HIGH IDLE – NO LOAD – FINE CURRENT CONTROL RHEOSTAT AT MAXIMUM
0 volts
2 ms
50 volts
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