★
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.
A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
H
I
J
K
L
M
N
83
OPERATION
YMC-700/YMC-500
CB151
CB154
CB153
W1851
W1603B
CB171
CB172
JK151
CB152
W1603A
W1601B
W1601A
W1602
5.0
0
0
0
0
5.0
0
0
3.3
3.3
0
0.6
0.7
3.3
3.3
3.3
0.7
2.2
2.2
5.1
2.1
5.1
0
3.3
3.3
0
3.3
3.3
3.3
0.6
0.7
3.3
0
3.3
3.1
0
0
3.1
3.3
3.1
3.1
3.1
3.1
0
0
0
0
0
0.7
0.6
0
3.3
0
3.3
1.4
0
0.7
0
0
3.1
3.3
0
1.4
1.4
0.7
0.7
0
3.3
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
0
4.5
0
3.3
3.3
3.3
0
0
0
-5.1
3.3
4.0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0.6
0
3.3
3.3
5.1
0
0
3.3
3.3
3.3
5.1
0
0.6
0.7
3.3
3.3
3.3
3.3
3.3
3.3
0.7
IC161, 171
: BA4510F-E2
Dual operational amplifier
: NJM4565M (TE1)
1, 7
4
V–
OUTPUT
–
+
–
+
1
2
3
4
8
7
6
5
OUT 1
-IN1
+IN1
V
EE
V
CC
OUT 2
-IN2
+IN2
YPAO
MIC
VOLUME
CONTROL
BACK
ENTER
STANDBY/
ON
OPERATION (2)
OPERATION (1)
OPERATION (6)
OPERATION (4)
OPERATION (3)
OPERATION (5)
YMC-500
YMC-700
Ohm 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
A/D value (3.3 V=255)
0 – 4
40 – 52
98 – 110
148 – 160
201 – 213
KEY1 (7 pin of IC381)
〈
(LEFT)
︿
(UP)
〉
(RIGHT)
﹀
(DOWN)
ENTER
Ohm 0
+10.0k
V
0 – 0.05
1.57 – 1.72
A/D value (3.3 V=255)
0 – 4
121 – 133
KEY2 (6 pin of IC381)
CONTROL
BACK
KEY1
KEY2
Destination detection for A/D port
Pull-up resistance 10 k-ohms
w
w
w
.
x
i a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
