2-14
602E52970
2.3.4 Block Diagram of the Power Supply Board
Fig. 2-12 Block diagram of the power supply board
The power supply board provides a maximum power of 30 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 CIS and the print head
- +12 VDC (
±
10%), for NCU and logic circuits
- -12 VDC (+10% -15%), for logic circuits
- +5 VDC (
±
5%) for CSI sensors and logic circuits.
Fuse
Mains voltage
Voltage reg.
+24 V
2 A
Mains
filter
Primary
rectifier
Switching
transformer
Switching
controller
MOS
Rectif.
diodes
-12 V
+12 V
+5 V
+28
V
Prim./sec.
optical
coupler
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