SiEBE18-526 Troubleshooting for BP Unit
Troubleshooting 293
6.6 Check
6.6.1 Power Supply Waveforms Check
Check No.14 Measure the power supply waveform between pins 1 and 3 on the terminal board, and check
the waveform disturbance.
Check to see if the power supply waveform is a sine wave (Fig.1).
Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2)
[Fig.1] [Fig.2]
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