Power Supply; Low-Voltage Power Supply - Brother HL 1240 - B/W Laser Printer Service Manual

1.5

Power Supply

1.5.1

Low-voltage power supply

The power supply uses a switching regulation system to generate the regulated DC power (+5
V and +24 V), which are converted from the AC line.
The regulated output and the production code of each power supply are listed below;
Regulated Output
+5 V / 1.6 A
+24 V / 2.15 A
Production Code
100V: MPW1555
200V: MPW1455
Fuse
Lightning
Surge
Absorber
Fuse
Line
Rectifier
Filter
Regulation
Regulation
Thermal
Fuse
Heater
Circuit
Feedback
Oscillator
24V
Circuit
5V
Circuit
Fig. 3-19
3-15
CHAPTER 3 THEORY OF OPERATION
(Heater)
Lamp
(Engin Circuit)
24V
5V