
EMX512SC/EMX312SC
72
9
Check the waveform.
Note: Do not short-circuit the oscilloscope chassis with the chassis of this unit when checking the waveform.
Check the waveform between pin 4-5 (GND-LVG) of IC402
Check the rectangular wave.
Period: approx. 14
µ
S (approx. 70kHz)
Amplitude: approx. 15 Vp-p
(Probe GND: IC402 Pin 4)
Check the waveform between emitter and collector of Q407 (IGBT)
Check the rectangular wave.
Period: approx. 14
µ
S (approx. 70kHz)
Amplitude: approx. 338 Vp-p (U/V)
approx. 320 Vp-p (H/B/W/K/O)
approx. 338 Vp-p (A)
Amplitude may vary depending on the primary
side.
(Probe GND: Q407 emitter)
B
Turn the power on.
C
D
13.9
µ
S
(71.94kHz)
15Vp-p
Amplitude
Summary of Contents for EMX312SC
Page 33: ...EMX512SC EMX312SC 33 JACK Circuit Board 2NA WD94340 C C Pattern side パターン側 2 ...
Page 34: ...EMX512SC EMX312SC 34 2NA WD94340 C C D D Pattern side パターン側 2 ...
Page 35: ...EMX512SC EMX312SC 35 2NA WD94340 D D Pattern side パターン側 2 ...
Page 43: ...EMX512SC EMX312SC 43 2NA WE83470 AC IN to PS CN402 to PS CN401 I I Component side 部品側 2 ...
Page 46: ...EMX512SC EMX312SC 46 PA Circuit Board 2NA WE74050 K K Pattern side パターン側 1 ...
Page 47: ...EMX512SC EMX312SC 47 2NA WE74050 K K Pattern side パターン側 1 ...
Page 78: ...EMX512SC EMX312SC 78 3 2 修理フ ローチャー ト 1 次側回路を確認し ます 注意 感電するおそれがあ り ますので 注意し て作業し て く だ さい ...
Page 80: ...EMX512SC EMX312SC 80 YES OPEN ...
Page 82: ...EMX512SC EMX312SC 82 15Vp p 280Vp p ...
Page 84: ...EMX512SC EMX312SC 84 ...