Akai AD20G, Service Manual

Page: 35 / 36

1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
Check REV Description
Title:
Size
A3
Number Revision
Date :
File Name:
Sheet of
Design By :
DATE Design Approval
Key SCAN
KEY_COL0
KEY_COL1
KBD_ROW0
KBD_ROW1
KBD_ROW2
KBD_ROW3
KBD_ROW4
KBD_ROW5
KBD_ROW6
KBD_ROW7
KBD_ROW0
KBD_ROW1
D5
DIEN1N4148WSM
D6
DIEN1N4148WSM
D7
DIEN1N4148WSM
D8
DIEN1N4148WSM
D9
DIEN1N4148WSM
D10
DIEN1N4148WSM
D11
DIEN1N4148WSM
D12
DIEN1N4148WSM
D13
DIEN1N4148WSM
D14
DIEN1N4148WSM
SW1
PROG_SEL
SW2
PROG_CH
SW3
CC
SW4
BACK A/B
SW5
APP
SW6
TAP
SW7
OCTAVE_UP
SW8
OCTAVE_DOWN
SW9
FULL_LEVEL
SW10
NOTE REPEAT
VR+3.3V
PAD0
PAD1
PAD2
PAD3
VR+3.3V
PAD4
PAD5
PAD6
PAD7
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
PAD
2 1
P1
FSR
2 1
P2
FSR
2 1
P3
FSR
2 1
P4
FSR
2 1
P5
FSR
2 1
P6
FSR
2 1
P7
FSR
2 1
P8
FSR
1000pF
C40
DNS
1000pF
C41
DNS
1000pF
C42
DNS
1000pF
C43
DNS
1000pF
C47
DNS
1000pF
C48
DNS
1000pF
C53
DNS
1000pF
C54
DNS
LED Driver
G
N
D
8
M
R
10
O
E
13
Q
1
1
Q
2
2
Q
3
3
Q
4
4
Q
5
5
Q
6
6
Q
7
7
Q
7'
9
SH
C
P
11
ST
C
P
12
D
S
14
Q
0
15
V
C
C
16
IC7
74HC595
VLED
G
N
D
8
M
R
10
O
E
13
Q
1
1
Q
2
2
Q
3
3
Q
4
4
Q
5
5
Q
6
6
Q
7
7
Q
7'
9
SH
C
P
11
ST
C
P
12
D
S
14
Q
0
15
V
C
C
16
IC8
74HC595
LED_CLK
LED_DATA
LED_RC
C46
0.1uF
DGND
DGND
C44
0.1uF
DGND
DGND
470pF
C50
DGND
L
D
15
A
B
A
N
K
L
D
1
A
PP
O
N
/O
FF
L
D
2
T
A
P
T
E
M
PO
L
D
3
C
O
T
A
V
E
U
P
L
D
4
C
O
T
A
V
E
_D
O
W
N
L
D
7
PA
1
L
D
8
PA
2
L
D
9
PA
3
L
D
10
PA
4
L
D
11
PA
5
L
D
12
PA
6
L
D
13
PA
7
L
D
14
PA
8
L
D
17
C
C
L
D
18
PR
O
G
C
H
A
N
N
E
L
R
33
22
0Ω
R
34
22
0Ω
R
35
22
0Ω
R
36
22
0Ω
R
44
22
0Ω
R
45
22
0Ω
R
46
22
0Ω
R
37
22
0Ω
R55 0Ω
R
56
0Ω
R
59
0Ω
DGND
R32
1KΩ
R52
1KΩ
R31
100KΩ
DMP3099L
D S
G
Q3
Q4
DGND
VCC
LED_PW_EN
47pF
C51
DNS
R
57
0Ω
R
58
0Ω
DGND DGND
D4
D3
DNS
G
N
D
8
M
R
10
O
E
13
Q
1
1
Q
2
2
Q
3
3
Q
4
4
Q
5
5
Q
6
6
Q
7
7
Q
7'
9
SH
C
P
11
ST
C
P
12
D
S
14
Q
0
15
V
C
C
16
IC9
74HC595
C45
0.1uF
DGND
DGND
L
D
5
Fu
ll
L
ev
el
L
D
6
N
ot
e
R
ep
ea
t
L
D
19
Pr
og
S
el
ec
t
R
61
0Ω
DGND
47pF
C49
DNS
R
60
0Ω
DGND
470pF
C52
DGND
R
38
56
0Ω
R
39
56
0Ω
R
40
56
0Ω
R
41
56
0Ω
R
42
56
0Ω
R
43
56
0Ω
R
47
56
0Ω
R
48
56
0Ω
R
49
56
0Ω
R
50
56
0Ω
R
51
56
0Ω
R54 100Ω R53 100Ω
1
2
3
4
5 6
VR2
K2
VR+3.3V
DGND
P2PHA
P2PHB
1
2
3
4
5 6
VR3
K3
VR+3.3V
DGND
P3PHA
P3PHB
1
2
3
4
5 6
VR4
K4
VR+3.3V
DGND
P4PHA
P4PHB
1
2
3
4
5 6
VR1
K1
VR+3.3V
DGND
P1PHA
P1PHB
1
2
3
4
5 6
VR6
K6
VR+3.3V
DGND
P6PHA
P6PHB
1
2
3
4
5 6
VR7
K7
VR+3.3V
DGND
P7PHA
P7PHB
1
2
3
4
5 6
VR8
K8
VR+3.3V
DGND
P8PHA
P8PHB
1
2
3
4
5 6
VR5
K5
VR+3.3V
DGND
P5PHA
P5PHB
100pF
C66
100pF
C55
100pF
C60
DGND
DGND
100pF
C82
100pF
C73
100pF
C77
DGND
DGND
100pF
C81
100pF
C72
100pF
C76
DGND
DGND
100pF
C79
100pF
C74
100pF
C78
DGND
DGND
100pF
C64
100pF
C58
100pF
C63
DGND
DGND
100pF
C68
100pF
C57
100pF
C62
DGND
DGND
100pF
C80
100pF
C71
100pF
C75
DGND
DGND
100pF
C67
100pF
C56
100pF
C61
DGND
DGND
D+3.3V
KBD_ROW0
KBD_COL1
KBD_ROW1
KBD_COL0
KBD_ROW2
KBD_COL3
KBD_ROW3
KBD_COL2
KBD_ROW4
KBD_COL5
KBD_ROW5
KBD_COL4
KBD_ROW6
KBD_COL7
KBD_ROW7
KBD_COL6
To Keyboard
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
FCN1
R
62
10
K
Ω
R
63
10
K
Ω
R
64
10
K
Ω
R
65
10
K
Ω
R
66
10
K
Ω
R
67
10
K
Ω
R
68
10
K
Ω
R
69
10
K
Ω
VR+3.3V.
VR+3.3V.
DGND. DGND.
JOYSTICK_X.
JOYSTICK_Y.
Joystick
0.1uF
C59
0.1uF
C70
0.01uF
C65
0.01uF
C69
7 8
VR9B
10KA
1
2'
2
3
3'
VR9A
10KA
VR+3.3V.
JOYSTICK_Y.
JOYSTICK_X.
DGND.
1
2
3
4
TE2
VR+3.3V
JOYSTICK_Y
JOYSTICK_X
DGND
T
O
J
O
Y
S
T
IC
K
1
2
3
4
TE3
VR
BREAK OFF
L
D
15
B
B
A
N
K
1
0
0
p
F
C
8
3
1
0
0
p
F
C
8
4
1
0
0
p
F
C
8
5
1
0
0
p
F
C
8
6
1
0
0
p
F
C
8
7
1
0
0
p
F
C
8
8
1
0
0
p
F
C
8
9
1
0
0
p
F
C
9
0
1
0
0
p
F
C
9
1
1
0
0
p
F
C
9
2
1
0
0
p
F
C
9
3
1
0
0
p
F
C
9
4
1
0
0
p
F
C
9
5
1
0
0
p
F
C
9
6
1
0
0
p
F
C
9
7
1
0
0
p
F
C
9
8
DGND
FOR EMC