Brother 1270N - Manual (Page 61)

CHAPTER 3 THEORY OF OPERATION
3-19
1.6 Power Supply
1.6.1 Low-voltage power supply
The power supply uses a switching regulation system to generate the regulated DC power
(+5V and +24V), which are converted from the AC line.
The regulated output and the production code of each power supply are listed below;
Regulated Output Production Code
+5V / 1.6 A
+24V / 2.15 A 100V: MPW1555
200V: MPW1455
For the circuit diagram of the low-voltage power supply PCB, see Appendix 20 or 21 .
Heater
Circuit
Thermal
Fuse
Lightning
Surge
Absorber
Feedback
Line
Filter
Fuse
Rectifier Oscillator
24V
Regulation
Circuit
24V
5V
Lamp
(Heater)
(Engin Circuit)
Fuse
5V
Regulation
Circuit
Fig. 3-25