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A
B
C
SCHEMATIC DIAGRAM (POWER 3/3)
1
Q Q
7
3
2
3
4
5
T
E
L
1
3
9
4
6
7
8
9
w w w
.
10
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
# Components having special characteristics are marked s and must be
s
replaced with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
D
E
F
1
5
1
6
3
2
2
9
6
5
1
3
x
a
o
y
i
http://www.xiaoyu163.com
G
H
5
0
Page 59
J1
to DIGITAL
0.6
0
0
0
0
10.8
0
0
0
10.8
0.6
0
10.7
0
Q
Q
3
7
6
0
0
0.7
0
0.8
4.5
0.8
5.2
6.4
10.8
6.3
0.2
5.7
10.8
0.2
5.1
0.2
0
5.1
0.2
0
5.1
1.0
0
1.1
0
IC261: 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
u
1
6
3
0
13
SW
3
COM
1
14
SW
.
2
15
SW
3
12
SW
4
SW
1
5
SW
5
6
2
SW
7
4
SW
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I
J
K
2
4
8
9
9
0
0
0
0
0
3
1
5
1
5
0
8
9
2
IC281: LA7108M
Video Amp
VIN1+
1
16
+VCC
INPUT STATES
"ON" CHANNEL
NFB1
2
6dB
DR
15
VOUT1
INHIBIT
C
B
A
0
0
0
0
0
0
0
0
1
1
MUTE1
m
3
14
GND
0
0
1
0
2
0
0
1
1
3
c
o
VIN2+
4
13
VOUT2
0
1
0
0
4
6dB
DR
0
1
0
1
5
NFB2
5
12
MUTE2
0
1
1
0
6
0
1
1
1
7
-VCC1
6
11
VOUT3
1
X
X
X
NONE
VIN3+
7
6dB
DR
10
MUTE3
NFB3
8
9
-VCC2
L
M
N
RX-SL100/RX-SL100RDS
2
8
9
9
4
9
8
2
9
9
x: NOT USED
O: USED / APPLICABLE
IC303~304: BA7613N
Video Signal Selector
MUTE
6dB Amp.
75ohm Driver
Logic
1
2
3
4
5
6
7
8
IC301: BD3842FS-E2
Function Switch
1
24
IC282: NJM2233BM
Video Switch
2
23
V +
GND
V
OUT
N.C.
LOGIC
8
7
6
5
3
22
4
21
BUFFER
20
5
BIAS
6
19
15k
15k
7
18
1
2
3
4
17
8
V
IN
1
SW1
V
IN
2
N.C.
9
16
10
15
11
14
12
13
65
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