Video Circuit - Oki S900 Service Manual

S900

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.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
2. CCD signal processing circuit
Name
H24G
H24G
M_VREF
INPOWER
INPOWER
CCDVCC
SH-
/HMSEN
GND
PH2-
PH1-
GND
CLAMP
RS-
B/W_SW
CCDPOWER
VOR
AGND
VOG
AGND
VOB
AGND
FMPH1
FMPH2
FMI01
FMI02
FMI11
FMI12
FMI21
FMI22
24VM
H24G
Function
Motor Ground
Motor Ground
Motor Reference
Inverter Power
Inverter Power
CCD Power Supply
Shift Gate
Home Sensor
Digital Ground
Motor Phase One
Motor Phase One
Digital Ground
CCD Clamp Gate
CCD Reset Gate
CCD Color and B/W Switch
CCD Power Supply
CCD Red Channel Output Signal
Analog Ground
CCD Green Channel Output Signal
Analog Ground
CCD Blue Channel Output Signal
Analog Ground
Motor Control Signal
Motor Control Signal
Motor Control Signal
Motor Control Signal
Motor Control Signal
Motor Control Signal
Motor Control Signal
Motor Control Signal
Motor Power Supply
Motor Ground
4-4