Panasonic UF-6300 Service Manual page 198

CN52
2
1
Thermistor
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 approximately +280 VDC (MAX) (steady current:3 mA/-1500 VDC steady
voltage).
IC3
SHINE
R401
pSSRA
+3.3V
D26
+3.3V
TH2
D25
+5v
GND
79
(ANI1)
IC1
C263
CPU
GND
Fuser Temperature Control Circuit Diagram
Q44
GND
+24V
R396
IC32
GND
+3.3V
Q42
GND
TH2
R395
SC PCB
198
+24V
CN6 CN103
11
11
PSU (LVPS)
Q43
PC001
6
1
2
4