Brother International HL 5030 Service Manual - Page 86
Power Supply, 1.5.1 Low-voltage power supply
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CHAPTER 3 THEORY OF OPERATION 1.5 1.5.1 Power Supply Low-voltage power supply The power supply uses a switching regulation system to generate the regulated DC power (+3.3V, +8V [non regulated] 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 +3.3V / 1.5A +8V / 0.4A +24V / 2.2A Production Code 100V: MPW5806 200V: MPW5706 For the circuit diagram of the low-voltage power supply PCB, see APPENDIX 11. or 12. 'LOWVOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM' in this manual. Fuse Lightning Surge Absorber Fuse Heater Circuit (Heater) Thermal Fuse Lamp Feedback Line Filter Rectifier Oscillator 24V Regulation Circuit 3.3V Regulation Circuit Fig. 3-29 (Engin Circuit / Main Circuit) 24V 8V 3.3V 3-18