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[Waveform of each section]
Condition: Input 100V, 50Hz rated load
T1
T2
Fig. 18 Q701(Q702) drain-source voltage waveform
T1
T2
Fig. 19 Q706 drain-source voltage waveform
T1
T2
Fig. 20 Q708 Drain-source voltage waveform
T2
Fig. 21 FW signal waveform
T1
Fig. 22 IC7055 Pin OSC waveform
260V
0V
T1
3.0µs
T2
8.4µs
24V
0V
T1
5.0µs
T2
22µs
39V
0V
T1
8.0µs
T2
22µs
24V
T1
T1
0.85µs
T2
10µs
3.1V
0V
T1
22µs
T1
Fig. 23 IC7065 Pin PSC waveform
Fig. 24 IC701 Pin OSC waveform
2
Copy lamp (CL) section
a. Noise filter circuit
Similarly to the main section, the noise filter circuit is composed of L
and C as shown in the figure below. It reduces the normal mode
noises and the common mode noises which come from the AC line.
F709
125V/4A
(L)
CN709-1
(N)
CN709-2
Fig. 32 Noise filter circuit
9 – 28
3.1V
0V
T1
22µs
3.2V
0V
L729
S701
CL300-300FB
AJW4512
C791
0.047(PA)
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