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A
B
SCHEMATIC DIAGRAM (FUNCTION 2/2)
1
2
3
4
5
4.9
4.9
13.2
4.9
4.9
0.6
5
0.6
4.7
0
13.2
13.1
A
B
6
12.5
4.7
0
7.5
7.0
0
7.5
0
0
0
7
Page 89
G8
to OPERATION (1)
8
# All voltages are measured with a 10MΩ/V DC electric volt meter.
# Components having special characteristics are marked s and
must be replaced with parts having specifications equal to those
originally installed.
# Schematic diagram is subject to change without notice.
9
C
D
E
DSP-AX640SE
Page 86
E2
Page 86
F2
to FUNCTION (1)
to FUNCTION (1)
4.9
-11.9
4.9
4.9
-11.9
4.9
4.9
4.9
-11.9
4.9
0
-11.9
4.9
0
0
4.9
4.9
4.9
4.9
4.8
4.2
4.9
4.9
0
MICRO COMPUTER
4.9
0
4.9
0
4.9
0
4.9
4.9
0
4.9
0.9
0.7
4.9
0
1.0
0
0
4.9
4.8
4.9
4.9
0
0.1
1.9
0
4.9
4
0
4.9
0.2
4.9
0
0
1.9
0
0
Page 81
E1
to DSP
F
G
INPUT
SELECTOR
4.9
0
-4.9
-4.9
3
0
0
13
5
0
11
4.9
6
0
12
8
0
10
4.9
0
1
0
15
0
2
4.9
4.9
0
3
8
1
0
0
0
2
0
C-INPUT
SELECTOR
0
0
6
7
0
0
0
5
4
-4.8
0
0
0
VIDEO DRIVER
0
4.8
0
0
0
0
0
0
0
4.8
-4.8
0
0
-4.8
-4.8
-4.8
-4.8
-4.8
0
4.8
0
0.1
0
0
0
0.1
0
4.8
-4.8
0
0
-4.8
Y-INPUT SELECTOR
4.9
4.9
4.9
0
8
0
0
0
0.9
0
7
5
0
0
6
0.2
-0.6
0
1.0
0
0
2
0.5
1.0
1
3
0.5
0.9
1.0
3
1.0
-4.8
Point 4 Pin 13 of IC601
Point 5 Emitter of Q601 and collector of Q602
A
Q601 E
B
Q602 C
POWER ON
POWER OFF
(Connect the power cord)
(Disconnect the power cord)
H
I
RX-V640/RX-V640RDS/HTR-5660/DSP-AX640/DSP-AX640SE
0
0.6
0
5.0
4.9
-4.9
0
4.9
-4.9
4.9
0
4.9
0
0
0
Y SELECTOR
4.9
0
PS
GND
-4.9
0
VEE3
VOUT3
0
5.0
0
VIN3
V+3
0
-4.9
0
0
VEE2
VOUT2
0
VIN2
V+2
5.0
-4.9
0
VEE1
VOUT1
0
VIN1
V+1
5.0
Cb SELECTOR
0
0
0
Cr SELECTOR
Note: IC821 LA7104M
for P.W.B. A to D version.
NJM2581M for P.W.B. E or later version.
0
4.9
4.9
2.6
2.6
2.6
2.6
0.1
0
0
4.4
0
-4.8
4.4
0
4.9
4.9
4.9
0
0
0
4.4
0
0
0
0
4.9
0
S-SIGNAL DETECTOR
4.9
4.2
4.2
0.9
4.2
0
-0.1
0
-0.4
-0.3
-1.8
0
0
Y/C MIX
4.9
4.9
4.9
0
1.0
1.3
-0.6
1.0
1.0
1.0
1.7
IC821: LA7104M
IC802: LA7108M
Video Amp
Video Amp
VIN1+
1
16
+VCC
VIN1+
1
+VCC
16
NFB1
2
6dB
DR
15
VOUT1
NFB1
2
6dB
DR
15
VOUT1
3
MUTE1
14
GND
MUTE1
3
14
GND
VIN2+
VOUT2
4
13
VIN2+
VOUT2
6dB
DR
4
13
NFB2
5
12
DR CTL
6dB
DR
NFB2
5
12
MUTE2
-VCC1
6
11
VOUT3
6
-VCC1
11
VOUT3
VIN3+
7
6dB
DR
10
MUTE2
VIN3+
7
6dB
DR
10
MUTE3
NFB3
8
9
-VCC2
NFB3
8
9
-VCC2
J
K
L
RX-V740/RX-V740RDS/DSP-AX740
IC602: NJM78L05A-T3
Voltage Regulator
INPUT
OUTPUT
GND
IC701, 702, 801: TC74HC4051AFEL
Analog Multiplexer/Demultiplexer
INHIBIT
VCC
6
16
A
11
LEVEL
BINARY TO 1-OF-8
B
10
CONVERTER
DECODER WITH INHIBIT
C
9
GND
8
VEE
7
0
13
SW
3
COM
1
14
SW
2
15
SW
3
12
SW
4
1
SW
5
5
SW
6
2
SW
7
4
SW
INPUT STATES
"ON" CHANNNEL
INHIBIT
C
B
A
0
0
0
0
0
0
0
0
1
1
0
0
1
0
2
0
0
1
1
3
0
1
0
0
4
0
1
0
1
5
0
1
1
0
6
0
1
1
1
7
1
X
X
X
NONE
IC703: LA7109
75Ω Video Driver
VIN1+
+VCC1
1
36
NFB1
2
6dB
DR
35
VOUT1
3
MUTE1
34
GND
VIN2+
VOUT2
4
33
6dB
DR
NFB2
5
32
DR CTL2
-VCC1
6
31
VOUT3
VIN3+
7
6dB
DR
30
MUTE4
NFB3
8
29
-VCC4
N.C.
9
28
N.C.
10
N.C.
27
N.C.
11
11
VIN4+
26
26
+VCC2
NFB4
12
6dB
DR
25
VOUT4
13
MUTE2
24
GND
VIN5+
14
23
VOUT5
6dB
DR
NFB5
15
22
DR CTL1
-VCC2
16
21
VOUT6
VIN6+
17
MUTE3
6dB
DR
20
NFB6
18
19
-VCC3
IC705, 706: TK15420M
Video Amp
OUT A
1
8
VCC
–IN A
2
7
OUT B
+
–
+
–
+IN A
3
6
–IN B
VEE
4
5
+IN B
IC707, 709, 822: TC74HC4053AF
Analog Multiplexer/Demultiplexer
INHIBIT
VDD
6
16
A
11
LEVEL
BINARY TO 1-OF-8
B
10
CONVERTER
DECODER WITH INHIBIT
C
9
VSS
8
VEE
7
0X
12
SW
X-COM
14
1X
SW
13
0Y
2
SW
15
Y-COM
1Y
1
SW
0Z
5
SW
4
Z-COM
1Z
3
SW
INPUT STATES
"ON" CHANNNEL (S)
INHIBIT
C
B
A
0
0
0
0
0X, 0Y, 0Z
0
0
0
1
1X, 0Y, 0Z
0
0
1
0
0X, 1Y, 0Z
0
0
1
1
1X, 1Y, 0Z
0
1
0
0
0X, 0Y, 1Z
0
1
0
1
1X, 0Y, 1Z
0
1
1
0
0X, 1Y, 1Z
0
1
1
1
1X, 1Y, 1Z
1
X
X
X
NONE
IC708: TC74HCU04AF
Hex Inverters
1A
1
14
VCC
1Y
2
13
6A
2A
3
12
6Y
2Y
4
11
5A
3A
5
10
5Y
3Y
6
9
4A
GND
7
8
4Y
87
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