Power Supply Unit (Psu) - Muratec F-315 Field Engineering Manual

2.4 Power Supply Unit (PSU)

The power supply unit receives the input line voltage and currents it to output voltages of +3.3DVC, +5
VDC and +24 VDC.
The heater circuit controls output voltage to the fuser heater according to instructions received from
the heater control circuit.
If an over-current is sensed in the secondary circuit, power is interrupted.
The power supply unit has two output connectors.
The following table shows the connector outputs:
CN101 -- to the Fuser Heater
Pin No. 1
Output L
CN2 -- to the Main Control PCB.
Pin No. 1 2
Output
PC HC1 HC2
voltage
Power supply unit block diagram for US
Power supply unit block diagram for Europe
2
N
3 4 5 6
+5V SG
7 8 9 10 11
+3.3V SG
2-5
12 13 14 15
+24V PG