Brother International IntelliFax-3550 Service Manual - Page 36
Signal from the document front sensor
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1 1-1 1-2 1-3 1-4 1-5 2 3 Main PCB Circuit Diagram 3/7 1 Connector for the document sensor PCB 1-1: Current sink transistor for driving the LED array 1-2: Synchronous clocks for the CCD unit 1-3: Image signal from the CCD unit 1-4: Signal from the document front sensor 1-5: Signal from the document rear sensor 2 Connector for the control panel 3 Image signal processor FAX3550/3650/8000P/8200P/MFC4450/4550/4550plus: 200 dpi MFC6550MC/7550MC/7650MC/9000/9500: 300 dpi III - 17
III –
17
Main PCB Circuit Diagram 3/7
1
Connector for the document sensor PCB
1
-1:
Current sink transistor for driving the LED array
1
-2:
Synchronous clocks for the CCD unit
1
-3:
Image signal from the CCD unit
1
-4:
Signal from the document front sensor
1
-5:
Signal from the document rear sensor
2
Connector for the control panel
3
Image signal processor
FAX3550/3650/8000P/8200P/MFC4450/4550/4550plus:
200 dpi
MFC6550MC/7550MC/7650MC/9000/9500:
300 dpi
1
2
3
1
-1
1
-4
1
-5
1
-3
1
-2