Brother International FAX-1010 Service Manual - Page 42
Power, Supply
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3.5 Power Supply PCB The power supply uses the switching regulation system to generate DC power (+25V and +8V) from a commercial AC power supply. The +25V source is stabilized and fed to the motor and solenoid for feeding documents and recording paper, the main PCB, and also fed to the CIS LED array. The +8V source is not stabilized and fed to the speaker. It is also fed to the main PCB where the 3-terminal regulator eliminates unstabilized components of the +8V source to generate stabilized +5V source. The +5V source is fed to the logic, control panel, recording head, and sensors. Commercial AC Power Line Fuse Lightning Surge Absorption Circuit Link Filter Rectifier Circuit Output Feedback v --, Oscillator 0 0 .,, 4 Circuit 0 4 0 4 0 0 0 0 0 0 0 0 25 V Output Circuit 8V Output Circuit Main PCB ° 25 V O 8V Power Supply Circuit III - 30