Lexmark 3200 Service Manual page 15

1394 interface:
This scanner and the printer are connected via the 1394 interface.
Video circuit:
The video circuit of this scanner includes: CCD driving circuit, CCD signal processing circuit.
1 CCD Driving Circuit
The CCD driving circuit is used to generate correct signals to the CCD, so that the CCD
may generate the correct image data.
Pin Assignment for Flatbed Video Circuit J3:
Pin Name Function
No.
1 H.G Inverter Ground
2 H.G Inverter Ground
4 Lamp V Inverter Power Supply
5 Lamp V Inverter Power Supply
6 +5V +5V Power Supply
7 SH Channel Shift Gate
8 Home Sensor Sensor Signal
9 D.G Digital Ground
10 PH2 CCD Clock Phase
11 PH1 CCD Clock Phase
12 D.G Digital Ground
13 Clamp CCD Clamp Signal
14 RS CCD Reset Gate
15 B/W CCD B/W Control Switch
16 +12V +12V Power Supply
17 VOR CCD red Channel Output Signal
18 A.G Analog Ground
19 VOG CCD Green Channel Output Signal
20 A.G Analog Ground
21 VOB CCD Blue Channel Output Signal
22 A.G Analog Ground
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