Block Diagram Of The Power Supply Board - Xerox Document FaxCentre 165c Service Manual

2.3.4 Block Diagram of the Power Supply Board

2 A
Fuse
Mains filter
Fig. 2-13 Block diagram of the power supply board
The power supply board provides a maximum power of 35 Watts and supplies, via
the switching circuit, the following direct voltages:
- +28 VDC (±10%), for the motors, variable according to the load
- +24 VDC (±2%), for the print head
- +12 VDC (±10%), for CCD, NCU and logic circuits
- -12 VDC (+10% -15%), for CCD and logic circuits
- +5 VDC (±5%) for sensors and logic circuits.
XEROX DFC165 & DWC 165c Service Manual
Primary rectifier
Voltage reg.
Switching
transformer
Diode rectifier
Switching
controller
MOS
2-15