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TROUBLESHOOTING & REPAIR |
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ABNORMAL OPEN CIRCUIT VOLTAGE WAVEFORM
C1
0 volts
10 volts | 20 ms |
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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
SCOPE SETTINGS
Volts/Div | 10/Div |
Horizontal Sweep | 20 ms/Div |
Coupling | DC |
Trigger | Internal |
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