Brother International HL-1260 Service Manual - Page 45
Low-Voltage Power Supply PCB Block Diagram
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Transformer Inlet Figure 3.9 Low-Voltage Power Supply PCB Block Diagram III - 13 AC IN Thermal Fuse TH1 H1 Lamp Power Switch (SW1) To Heater Circuit P1 21 F101 L N Heater Control F102 L N Noise Filter Rectfier Rectfier Chopper Feedback Control Over Voltage Detector P3 1 HEAT/ 4 +24V 2 +5V 3 +5V 5 +24VRET 6 ±0V 7 ±0V 8 FANLOCK/
III -
13
Heater
Control
Thermal
Fuse
Lamp
H1
TH1
AC IN
21
L
N
L
N
Power
Switch
(SW1)
Noise
Filter
Rectfier
Inlet
Transformer
Rectfier
Chopper
Over
Voltage
Detector
Feedback Control
1
4
2
3
6
7
5
8
HEAT/
+24V
+5V
+5V
±0V
±0V
+24VRET
FANLOCK/
P3
To Heater Circuit
F101
F102
P1
Figure 3.9 Low-Voltage Power Supply PCB Block Diagram