SiUS121630EA
Check
Service Diagnosis
193
8.4
Power Supply Waveform Check
Check No.11
Measure the power supply waveform between No. 1 and No. 2 on the terminal board, and check
the waveform disturbance.
Check if the power supply waveform is a sine wave (Fig.1).
Check if there is waveform disturbance near the zero-cross (sections circled in Fig.2)
[Fig.1]
[Fig.2]
(R1736)
(R1444)
