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TROUBLESHOOTING & REPAIR | ||
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TYPICAL SCR GATE VOLTAGE WAVEFORM
SCOPE SETTINGS
This is a typical SCR gate pulse voltage |
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waveform. The machine was in an open cir- | Volts/Div | . .2 V/Div. |
cuit condition (no load) and operating prop- |
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erly. Note that each vertical division repre- | Horizontal Sweep | .5 ms/Div. |
sents 2 volts and each horizontal division |
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represents 5 milliseconds in time. | Coupling | . . . . .DC. |
Note: Scope probes connected at Plug J3 | Trigger | . .Internal. |
on the control board. The (+) probe to lead |
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G2, and the |
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