10.
Circuit Diagrams and PWB Lats
Keyboard Control Panel
A
A
C
B
B
C
4
1
2
3
4
2
3
1
KEYBOARD CONTROL
E
E
2722 171 00
8
26
1
8
6
8
1_50
3
_0911
3
0.ep
s
0911
3
0
+
3
.
3
V
R6
5.6 k
Ω
GND
R2
10
Ω
C2
10 nF
R
8
8
.2 k
Ω
R5
3
.9 k
Ω
R4
1.5 k
Ω
R
3
2.2 k
Ω
R7
1
8
k
Ω
CH+
ZD1
4.7 V
GND
CH-
GND
MENU
GND
VOL+
GND
VOL-
GND
ON/OFF
GND
GND
GND
GND
GND
R9
6.
8
k
Ω
1
2
3
J1
CON
3
Layout Keyboard Control Panel
1
1
A
B
C
D
E
F
G
H
I
J
A
B
C
D
E
F
G
H
I
J
A
B
C
D
E
F
G
H
I
J
A
B
C
D
E
F
G
H
I
J
1
1
2722 171 00
8
26
2722 171 00
8
26
1
8
6
8
1_504_0911
3
0.ep
s
0911
3
0