Yamaha YMC-700 Service Manual page 87

A B C
MAIN 4/5
1
Q Q
7
3
to MAIN 3/5
2
3
VIDEO IN
4
5
T E
L 1 3 9 4
to MAIN 3/5
6
to MAIN 3/5
7
to MAIN 5/5
8
9
w w w
.
10
D E F
1 5 1
6 3
2.6
2.6
2.6
IC201
2.6
2.6
2.6
IC201
2.6
2.6
2.6
IC201
2 2 9 6 5 1 3
5.1
3.2
2.6
IC201: TC74HC4053AF
Analog multiplexer/demultiplexer
INHIBIT VCC
6 16
A 11
LEVEL BINARY TO 1-OF-8
B 10
CONVERTER DECODER WITH INHIBIT
C 9
x a GND 8 o
y
VEE 7
0X 12 SW
i
1X 13 SW
0Y 2 SW
1Y 1 SW
0Z 5 SW
3
http://www.xiaoyu163.com G H
YMC-700 YMC-500
5
0
5.1
0 0
0 0
0 0
INPUT SELECTOR
2.5 5.1
0
0
2.5 5.1
0 0.8
2.5
5.1
0 0
Q Q
0
0 3 7 6
5.1
3.3
2.6
IC202: NJM2580M (TE2)
Single supply wide band 3 ch video amplifier
6dB 75
VIN1 1 Driver 14 V+1
AMP
BIAS
GND1 2 VOUT1
13
INPUT STATES
"ON" CHANNEL (S) 6dB 75
INHIBIT C B A VIN2 3 12 V+2
AMP Driver
0 0 0 0 0X, 0Y, 0Z
0 0 0 1 1X, 0Y, 0Z BIAS
GND2 4 11 VOUT2
u 1 6 3
0 0 1 0 0X, 1Y, 0Z
0 0 1 1 1X, 1Y, 0Z
6dB 75
VIN3 5 Driver 10 V+3
AMP
X-COM 0 1 0 0 0X, 0Y, 1Z
14
.
0 1 0 1 1X, 0Y, 1Z
CLAMP
GND3 6 9 VOUT3
0 1 1 0 0X, 1Y, 1Z
Y-COM
15
0 1 1 1 1X, 1Y, 1Z
PowerSave 7 REF 8 VSAG
1 X X X NONE
4 Z-COM
SW
I J K
2 4
8 9 9
3 1 5 1 5 0 8 9 2
m
c o
L M N
YMC-700/YMC-500
2
8 9 9
4 9 8 2 9 9
W2001
0
0
0
0
0
Page 82 B9
0
to DIGITAL_CB382
0
0
0
0
★ 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.
87