A
B
C
D
E
F
G
H
1
2
3
4
5
6
I
J
K
L
7
8
DSP-E800
S-VIDEO SELECTOR
VIDEO SELECTOR
DIGITAL INPUT
SELECTOR
DIGITAL
5.0
0
2.5
0
0
0
0
0
3.4
0
0
0
3.4
-4.9
5.0
0
2.5
0
0
0
0
0
3.4
0
0
0
3.4
-4.9
5.0
0
2.5
0
0
0
0
0
3.4
0
0
0
3.4
-4.9
3.9
4.7
0
3.9
4.7
0
4.3
4.7
0
2.4
2.4
3.0
3.0
3.0
3.0
0
0
0
0
0
0
0
0
0
0
0
0
0
4.6
4.6
0
0
4.6
3.9
4.6
0
4.6
4.3
4.6
4.6
4.6
0
0
0
0
0
0
0
0
4.6
0
4.6
0.3
0.3
0.3
4.7
4.7
4.7
0
0
4.7
4.7
0.3
0
4.7
4.7
4.7
4.7
0
0
4.7
4.7
4.7
4.7
4.7
4.7
0
0
0
3.9
4.7
4.7
0
4.6
0
0
0
0
* All voltages are measured with a 10M
Ω
/DC electric volt meter.
* Components having special characteristics are marked
Z
and must be
replaced with parts having specifications equal to those originally installed.
* Schematic diagram is subject to change without notice.
■
SCHEMATIC DIAGRAM
IC601 — 603 : NJM2296D
4-input to 3-output Video switch
13
16
10
14
2
1
15
11
8
12
6
4
9
7
5
3
VIN1
SW2
V+
SW1
SW5
V–
GND
SW4
SW3
VOUT1
VOUT2
VOUT3
VIN2
20k
20k
20k
20k
20k
S3
S2
S4
S1
S5
6dB
AMP
75
Ω
DRIVER
20k
S6
S7
6dB
AMP
75
Ω
DRIVER
20k
6dB
AMP
75
Ω
DRIVER
VIN3
VIN4
VIN5
VOUT1
VIN1
VIN1
MUTE
VIN2
MUTE
VIN3
MUTE
VIN4
MUTE
VIN4
MUTE
VIN5
MUTE
VIN5
MUTE
MUTE
SW5
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
L
SW4
X
L
SW3
H
X
SW2
H
L
H
H
H
L
L
H
H
L
L
L
SW1
L
L
H
H
H
H
X
X
L
H
H
L
H
H
L
H
VOUT2
MUTE
MUTE
MUTE
VIN2
VIN2
VIN3
VIN4
VIN4
VIN4
VIN4
VIN4
VIN5
VIN5
VIN5
VIN5
MUTE
VOUT3
VIN1
MUTE
VIN1
MUTE
MUTE
VIN3
VIN4
VIN4
VIN4
MUTE
MUTE
VIN5
VIN5
MUTE
MUTE
MUTE
INPUTS
OUTPUTS
H: High level, L: Low level, X: Don't care.
IC651, 652 : TC74HCU04AP
Hex Inverters
1A
1Y
2Y
V
DD
6A
1
2
3
4
11
2A
6Y
5A
12
13
14
3A
3Y
5Y
4A
5
6
7
V
SS
4Y
8
9
10
IC653, 654 : TC74HC00AP
Quad 2-input NAND Gate
A1
B1
A2
V
DD
B4
1
2
3
4
11
Y1
A4
Y4
12
13
14
B2
Y2
B3
A3
5
6
7
V
SS
Y3
8
9
10
IC655 : HD74HC153P
Dual 4 to 1 Data Selectors
15
STROBE
2G
2
B
SELECT
14
A
SELECT
13
12
11
10
9
OUTPUT
2Y
1
STROBE
1G
3
4
5
6
7
OUTPUT
1Y
16
VCC
8
GND
DATA INPUTS
DATA INPUTS
2C3
2C2
2C1
B
A
2C0
2Y
2G
B
A
1C3
1C2
1C1
1C0
1Y
1G
B
A
B
A
SELECT
INPUTS
B
X
L
L
H
H
A
X
L
H
L
H
STROBE
G
H
L
L
L
L
OUTPUT
Y
L
C0
C1
C2
C3
43
Содержание DSP-E800
Страница 7: ...DSP E800 DSP E800 4 2 MEMO ...