198
High Voltage Drive Circuit (Charging, Development and Transfer)
High Voltage is provided through a DC to DC converter, which changes the +24 VDC supply voltage to -
650 VDC, and output approximately 0.64 KVAC (Steady current: 200 mA) for the Charging Block. The
Developer Circuit converts the +24 VDC to between -300 VDC for the development bias, and outputs
1,500 VAC (p-p) at a frequency of 1.650 kHz to charge the toner. The Transfer Circuit changes the +24
VDC supply voltage to approxi280 VDC (MAX) (steady current:3 mA/-1500 VDC steady
voltage).
GND
GND
Q44
R394
R399
IC32
R398
GND
R397
R400
C214
R78
+5v
+24V
+3.3V
+3.3V
+3.3V
D26
C263
GND
PC001
1
2
6
4
+24V
R221
Thermistor
PSU (LVPS)
pSSRA
GND
Q43
Q42
79
SC PCB
2
1
CN52
TH2
D25
TH2
11
CN6
11
CN103
Fuser Temperature Control Circuit Diagram
(ANI1)
IC1
CPU
R401
R396
R395
IC3
SHINE
Содержание UF-6300
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Страница 246: ...DZSD001829 15 Panasonic Software Operating Instructions Network Firmware Update Tool for Service Technicians Version 3...
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