ABCDEFGH
1
2
3
4
5
6
IJK
7
8
DSP-AX2
■ SCHEMATIC DIAGRAM (VIDEO 2/2)
* All voltage are measured with a 10MΩ/V 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.
E-78/J-76
VIDEO AMP
INPUT
SELECTOR
REC OUT
SELECTOR
COMPONENT VIDEO
SELECTOR
RS232C
INTERFACE
L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5.0
-4.9
-4.9
-0.1
-0.1
3.2
3.2
0
0
0
0
0
0
5.0
0.4
5.0
1.0
5.0
4.9
0
0
0
-4.9
0
5.0
0
0
0
0
-4.9
0
5.0
0
-4.9
-4.9
5.0
0
0
0
5.0
-4.9
0
0
0
5.0
-0.1
0
0
0
0
5.0
-0.1
0
0
0
0
5.0
-0.1
0
0
4.9
0
-8.8
0
4.9
0
0
4.9
7.2
9.5
2.4
4.7
0
-9.3
9.1
0
F AMP (1)
IC701 : LA7108M-TLM
75Ω Video Driver
6dB DR
6dB DR
6dB DR
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VIN1+
NFB1
MUTE1
VIN2+
NFB2
–VCC1
VIN3+
NFB3
+VCC
VOUT1
GND
VOUT2
MUTE2
VOUT3
MUTE3
–VCC2
LEVEL
CONVERTER
BINARY TO 1-OF-8
DECODER WITH INHIBIT
11
10
9
8
7
6 16
13
SW
SW
SW
SW
SW
SW
SW
SW
14
15
12
1
5
2
4
3
INHIBIT VDD
X
A
B
C
VSS
VEE
X0
X1
X2
X3
X4
X5
X6
X7
IC702, 703 : TC74HC4051AP
Analog Multiplexer/Demultiplexer
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
C
0
0
0
0
1
1
1
1
X
B
0
0
1
1
0
0
1
1
X
A
0
1
0
1
0
1
0
1
X
“ON” CHANNEL (S)
0
1
2
3
4
5
6
7
NONE
IC751 : LA7104M
Double Scart Interface
IC752 : TC74HC4053AP
Triple 2-Channel Multiplexer/Demultiplexer
16
VDD
LOGIC LEVEL CONVERTER
12
OX
7
VEE
6
INH
OUT C IN
13
IX
OUT C IN
2
OY
OUT C IN
1
IY
OUT C IN
5
OZ
OUT C IN
3
IZ
OUT C IN
4
Z-COMMON
15
14
X-COMMON
Y-COMMON
9
C
10
B
11
A
8
VSS
INHIBIT
(Pin 6)
L
L
L
L
L
L
L
L
H
CONTROL INPUTS “ON” CHANNEL
0X (Pin 12), 0Y (Pin 2), 0Z (Pin 5)
1X (Pin 13), 1Y (Pin 1), 1Z (Pin 3)
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NOTE
C
(Pin 9)
L
L
L
L
H
H
H
H
*
B
(Pin 10)
L
L
H
H
L
L
H
H
*
A
(Pin 11)
L
H
L
H
L
H
L
H
*
* Don’t Care
6dB DR
6dB DR
6dB DR
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VIN1+
NFB1
MUTE1
VIN2+
NFB2
–VCC1
VIN3+
NFB3
+VCC
VOUT1
GND
VOUT2
DR CTL
VOUT3
MUTE2
–VCC2
IC951 : HIN202ECBN-T
RS-232 Line Drive/Receiver
R
1
R
2
T
2
T
1
T
1
OUT
T
1
IN
710
T
2
OUT
T
2
IN
12
8
R
1
IN
R
1
OUT
R
2
IN
R
2
OUT
GND
5
6
4
C
2
–
C
2
+
V–
3
2
1
C
1
–
C
1
+
V+
V
CC
16
+10V TO –10V
VOLTAGE INVERTER
+5V TO +10V
VOLTAGE INVERTER
11
14
13
9
15
P-E77/J75
G-2
P-E76/J74
F-2
P-E77/J75
H-2
P-E73/J71
L-3
P-E73/J71
J-9
P-E73/J71
C-9
P-E73/J71
D-9
Conditions
• INPUT: DVD auto
• PROGRAM: PRO LOGIC DSP
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