Brother International IntelliFax-3550 Service Manual - Page 42
Relay PCB, Cover switch SW1
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3.3 Relay PCB 1 7 2 43 5 6 8 9 Relay PCB Circuit Diagram 1 Connector for the main PCB 2 Registration sensor (PC1) circuit 3 Sheet feeder cover sensor (PC2) circuit 4 Cover switch (SW1) 5 Connector for the high-voltage power supply PCB 6 Connector for the toner sensor PCB 7 Connector for the laser diode of the laser unit 8 Switching circuit which feeds 24V power to the polygon motor during the printing pro- cess. 9 Connector for the polygon motor III - 23
III –
23
3.3
Relay PCB
1
4
6
7
8
9
Relay PCB Circuit Diagram
1
Connector for the main PCB
2
Registration sensor (PC1) circuit
3
Sheet feeder cover sensor (PC2) circuit
4
Cover switch (SW1)
5
Connector for the high-voltage power supply PCB
6
Connector for the toner sensor PCB
7
Connector for the laser diode of the laser unit
8
Switching circuit which feeds 24V power to the polygon motor during the printing pro-
cess.
9
Connector for the polygon motor
5
2
3