Yamaha YMC-700 Service Manual page 83

A B C
OPERATION
1
Q Q
7
3
2
0
Page 86 D2 5.0
-5.1
to MAIN_W1000
0
0
CB151
0
0
0
3
4.0
3.3
3.3
3.3
3.3
3.3
0.7
Page 82 D9
0.6
to DIGITAL_CB383
4 0
3.3
3.3
3.3
5.1
3.3
3.3
3.3
0
CB154
5
T E OPERATION (5)
L 1 3 9 4
STANDBY/
ON
6
7
IC151: NJM4565M (TE1)
Dual operational amplifier
8
V+
8
2, 6
–INPUT OUTPUT
1, 7
+INPUT
3, 5
V–
4
9
IC161, 171: BA4510F-E2
Dual operational amplifier
OUT 1 1
8 V
CC
w w w
-IN1 2 – 7 OUT 2
+
+IN1 3 – 6 -IN2
.
+ +IN2
V 4 5
EE
10
D E F
1 5 1
6 3
4.5
5.0
0
0
0
IC151
0
0
0
IC151
0
-5.1
OPERATION (2)
2 2 9 6 5 1 3
W1601A
W1601B
3.3
0
W1602
3.3
3.3
3.3
3.3
3.3
0.7
0.6
0
3.3
5.1
3.3
3.3
3.3
0
1.6
IC161
1.6 1.6
x a o
y
i
http://www.xiaoyu163.com G H
YMC-700 YMC-500
5
0
Destination detection for A/D port
Pull-up resistance 10 k-ohms
KEY1
Ohm
JK151
A/D value (3.3 V=255)
KEY1 (7 pin of IC381)
YPAO
MIC
KEY2
Ohm
A/D value (3.3 V=255)
KEY2 (6 pin of IC381)
CB153 W1851
0 0
3.3
3.3
3.3
3.3
3.3
3.3
Q Q
3 7 6 3
VOLUME
5.1
2.2
2.2
1.4
0.7
0.7
0
3.3 3.1
3.1 3.3
1.6
1.6
IC161
0
1.6
0
0
u 1 6 3
.
I J K
2 4
8 9 9
0 +2.2k +4.7k +8.2k +27.0k
V 0 – 0.05 0.52 – 0.67 1.27 – 1.42 1.92 – 2.07 2.60 – 2.76
0 – 4 40 – 52 98 – 110 148 – 160 201 – 213
︿ (UP)
〈 (LEFT) 〉 (RIGHT) ﹀ (DOWN) ENTER
0 +10.0k
V 0 – 0.05 1.57 – 1.72
0 – 4 121 – 133
CONTROL BACK
OPERATION (3)
BACK
CONTROL
ENTER
1 5 1 5 0 8 9 2
W1603B
3.3
3.3
0.7
0.6
0
3.3
3.3
5.1
0
2.1
1.4
0.7
1.4
0.7
0
CB171
3.1
3.1
3.1
3.1 3.1
0
0 0
0
0
OPERATION (6)
OPERATION (1)
m
c o
L M N
YMC-700/YMC-500
2
8 9 9
4 9 8 2 9 9
0.7
0 0
0.6
OPERATION (4)
3.3 3.1
1.6
3.1
IC171
1.6 3.3
1.6
IC171
1.5
1.6
CB172
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.
83