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TRANSFER HIGH-VOLTAGE
TONER SENSE
DBOUT
P4
8
7
10
9
6
11
13
12
14
15
16
/HVT3
/HVT2
HVTFB
HVT4
/HVT1
TONER1
TONER2
0V
24VRET
+5V
+24V
Pulse
Generator
Current
Buffer
P5
High-Voltage
Electrode
Current
Buffer
Attenuator
Constant Current
Control Unit
(Feedback Circuit)
(ON / OFF Circuit)
Toner Sense
Control Unit
(HVT4 Control Circuit)
Current
Buffer
(Toner 1 Circuit)
(Toner 2 Circuit)
P3
Toner Sense
Electrode
Pulse
Generator
Constant Voltage
Control Unit
Figure 3.11 High-Voltage Power Supply Block Diagram 2