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TROUBLESHOOTING & REPAIR
F-29 F-29
CLASSIC II
This is the typical DC output voltage
generated from a properly operating
machine. Note that each vertical divi-
sion represents 50 volts and that
each horizontal division represents 5
milliseconds in time.
Note: Scope probes connected at
machine output terminals.
SCOPE SETTINGS
Volts/Div.....................50V/Div.
Horizontal Sweep.....5 ms/Div.
Coupling.............................DC
Trigger.........................Internal
NORMAL OPEN CIRCUIT DC WELD VOLTAGE WAVEFORM
HIGH IDLE – NO LOAD – FINE CURRENT CONTROL RHEOSTAT AND SELECTOR
SWITCH AT MAXIMUM
CH1
0 volts
5 ms
50 volts