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TROUBLESHOOTING & REPAIR
F-49 F-49
RANGER 300 D AND 300 DLX
0 volts
5 ms
50 volts
SCOPE SETTINGS
Volts/Div.....................50V/Div.
Horizontal Sweep.....5 ms/Div.
Coupling ............................DC
Trigger .........................Internal
This is the typical AC output voltage
generated from a properly operating
machine. Note that each vertical
division represents 50 volts and that
each horizontal division represents 5
milliseconds in time.
Note: Scope probes connected at
machine output terminals.
NORMAL OPEN CIRCUIT AC WELD VOLTAGE WAVEFORM
HIGH IDLE – NO LOAD – OUTPUT CONTROL AT MAXIMUM