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SP-100
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F-11
TROUBLESHOOTING & REPAIR
SCOPE SETTINGS
This is NOT the typical output voltage waveform. The
output capacitor was disconnected from the circuit.
Note the increased ripple in the waveform. This condi-
tion simulates the faulty output filter capacitor. Each
vertical division represents 10 volts and that each hor-
izontal division represents 20 milliseconds in time.
Note: Scope probes connected at machine output ter-
minals. Positive probe to (+) terminal, negative probe
to (–) terminal.
ABNORMAL OPEN CIRCUIT VOLTAGE WAVEFORM
0
volts
10 volts 20 ms
C1
Volts/Div ........................................................10/Div
Horizontal Sweep.....................................20 ms/Div
Coupling .............................................................DC
Trigger..........................................................Internal