Power Supply Waveform Check - Daikin 4MXL-T Series Service Manual

SiUS121827E
8.4

Power Supply Waveform Check

Check No.11
Measure the power supply waveform between No. 1 and No. 2 on the terminal strip, 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]
Part 6 Service Diagnosis
[Fig.2]
(R1736)
Check
(R1444)
235