Epson PhotoPC 850Z, Руководство по обслуживанию, Страница: 42 / 127

EPSON PhotoPC 850Z Revision A
Operating Principles Operating Principles of Circuit Boards 42
CCD block diagram and terminals are shown below. For your reference, Ye is
the Yellow detection cell, Mg is the Magenta detection cell, CY is the Cyan
detection cell, and G is the Green detection cell.
Figure 2-5. CCD Block Diagram
8
1
18 19 20
2
3
4 5
6 7
13 14 15 16 17
Ye Cy
G
Ye
G
Ye
Mg
Cy
Mg
Cy
Cy
Mg
Cy
Mg
G
Ye
G
Ye
Ye
Cy
(Note)
V
DD
GND
SUB
C
SUB
V
L
H
1
H
2
Vertical register
G Mg
G
Mg
V
4
V
3B
V
2
V
1A
V
1B
GN
D
V
3A
NC
Horizontal register
(Note) : Photo sensor
9
10
12
11
GN
D
V
OU
T
RG
H
2
H
1
Table 2-2. CCD Pin Description
Pin No. Symbol Pin Description Waveform Voltage
1 V
φ
4
Vertical Register
Transfer Clock
-7.5V, 0V
2, 3
V
φ
3A,
V
φ
3B
Vertical Register
Transfer Clock
-7.5V, 0V,
15V
4 V
φ
2
Vertical Register
Transfer Clock
-7.5V, 0V
5, 6
V
φ
1A,
V
φ
1B
Vertical Register
Transfer Clock
-7.5V, 0V,
15V
7, 9 GND GND GND 0V
10 VOUT Signal Output Approx. 10V
11 VDD Circuit Power DC 15V
12
φ
RG
Reset Gate
Clock
12.5V, 17.5V
13, 20 H
φ
2
Horizontal
Register Transfer
Clock
0V, 5V
14, 19 H
φ
1
Horizontal
Register Transfer
Clock
0V, 5V