Troubleshooting for BP Unit
SiBE18-821_C
382
Troubleshooting
6.6
Check for BP Unit
6.6.1 Power Supply Waveforms Check
Check No.14
Measure the power supply waveform between the 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]