A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
141
VIDEO 1/3
RX-V671/HTR-6064/RX-A710
★
All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★
Components having special characteristics are marked
⚠
and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
IC301
IC301
IC301
IC302
IC303
IC308
IC307
IC306
IC303
IC303
IC303
CB301
IC305
IC305
IC301
IC302
W3001
IC310
IC310
IC310
IC305
CB302
CB303
IC305
IC305
IC305
IC305
IC310
: FHP3350IM14X
Triple voltage feedback amplifier
1
2
3
4
5
6
7
8
14
13
12
11
10
9
NC or DISABLE1
NC or DISABLE2
NC or DISABLE3
+Vs
+IN1
-IN1
OUT1
OUT3
OUT2
-IN3
+IN3
+IN2
-IN2
-Vs
IC305
: LA73050-TLM-E
6-channel 75-ohm video driver
IC308
: LC709004A-TLM-E
I/O-expander for microcontroller
C
ontr
ol logic
port 0 I/O buffer
Serial/parallel converter/shift register
I/O control/output register
DIN
VDD
DOUT
VSS
CLK#
CS#
RES#
P00
P07
2
14
15
19
3
4
21
24
17
port 1 I/O buffer
P1
0
P1
7
15
8
IC306
: NJM2581M
Video amplifier
13
VOUT1
11
VOUT2
9
VOUT3
8
GND
10
V+3
14
V+1
12
V+2
2
NEE1
4
VEE2
6
VEE3
7
PowerSave
5
VIN3
1
VIN1
3
VIN2
75
Driver
6dB
AMP
BIAS
75
Driver
6dB
AMP
BIAS
75
Driver
6dB
AMP
BIAS
REF
4 1
6 2
COM 3
7 4
5 5
INH 6
V
EE
7
GND 8
Vcc
16
2
15
1
14
0
13
3
12
A
11
B
10
C
9
IC307
: TC74HC4051AFEL
8-channel analog multiplexer/demultiplexer
Logic
Level
Converter
OUT
C IN
OUT
C IN
A
B
C
INH
COM
0
1
2
3
4
5
6
7
IC301-303
: TC74HC4053AF
Analog multiplexer/demultiplexer
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNEL (S)
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NONE
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
BINARY TO 1-OF-8
DECODER WITH INHIBIT
LEVEL
CONVERTER
VCC
INHIBIT
A
B
C
GND
VEE
0X
1X
0Y
1Y
0Z
X-COM
Z-COM
Y-COM
SW
SW
SW
SW
SW
SW
11
6
16
10
9
8
7
12
13
2
5
3
1
14
15
4
AV 1
COMPONENT
VIDEO
VIDEO
to VIDEO 2/3
VIDEO (1)
AV 2
AV 3
AV 4
AV 5
AV 6
AV OUT
MONITOR OUT
VIDEO
COMPONENT
VIDEO
to DIGITAL (1)_CB21
Page 128
B1
to OPERATION (2)_CB455
Page 136
I10
DRAFT