Brother 1660E Service Manual page 46

P4
/HV1AC 1
DNSTY 5
/HV1DC 2
/DBAC 3
/DBDC 4
Figure 3.10 High-Voltage Power Supply Block Diagram 1
PRIMARY HIGH-VOLTAGE AC
Sin Wave
Generator
Control Unit
(Feedback Circuit)
(ON / OFF Circuit)
PRIMARY HIGH-VOLTAGE DC
Pulse
Generator
PULSE
Control Unit
(Feedback Circuit)
(DNSTY Control Circuit)
(ON / OFF Circuit)
DEVELOPER BIAS AC
Pulse
Generator
Control Unit
(Feedback Circuit)
(ON / OFF Circuit)
DEVELOPER BIAS DC
Current
PULSE
Buffer
Current
Buffer
III - 14
Current
Buffer
Current
Buffer
Current
Buffer
Current
Buffer
Control Unit
(Feedback Circuit)
(DNSTY Control Circuit)
(ON / OFF Circuit)
High-Voltage
Electrode
P1
DBOUT
High-Voltage
Electrode
P2