Oki S900, Service Manual

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S900
4-4
4.2.3 VIDEO CIRCUIT:
The video circuit of this S900 includes:
1. CCD driving circuit and motor control signal
2. CCD signal processing circuit.
1. CCD Driving Circuit & Motor Control Signal
The CCD driving circuit is used to generate correct signals to the CCD, so that the CCD may
generate the correct image data.
Signals for CCD:
Pin Assignment for CCD cable
Pin No. Name Function
1 H24G Motor Ground
2 H24G Motor Ground
3 M_VREF Motor Reference
4 INPOWER Inverter Power
5 INPOWER Inverter Power
6 CCDVCC CCD Power Supply
7 SH- Shift Gate
8 /HMSEN Home Sensor
9 GND Digital Ground
10 PH2- Motor Phase One
11 PH1- Motor Phase One
12 GND Digital Ground
13 CLAMP CCD Clamp Gate
14 RS- CCD Reset Gate
15 B/W_SW CCD Color and B/W Switch
16 CCDPOWER CCD Power Supply
17 VOR CCD Red Channel Output Signal
18 AGND Analog Ground
19 VOG CCD Green Channel Output Signal
20 AGND Analog Ground
21 VOB CCD Blue Channel Output Signal
22 AGND Analog Ground
23 FMPH1 Motor Control Signal
24 FMPH2 Motor Control Signal
25 FMI01 Motor Control Signal
26 FMI02 Motor Control Signal
27 FMI11 Motor Control Signal
28 FMI12 Motor Control Signal
29 FMI21 Motor Control Signal
30 FMI22 Motor Control Signal
31 24VM Motor Power Supply
32 H24G Motor Ground
2. CCD signal processing circuit