Roland EM-20 - Control PCB Circuit Diagram (EM-10)

A
B
C
D
E
F
G
H
I
L
M
N
O
P
Q
R
S
T
U
J
K
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EM-20/EM-10
July, 1999
SW15 SW16
1
2
D15
1
2
D16
S
S
D
6
S
S
D
7
ALL DIODES D1..D64 IN THIS SHEET ARE 1N4148
GROUP_A/B STYLE_SONG
SW13
1
2
D13
S
S
D
3
S
S
D
4
S
S
D
5
SW4 SW5 SW6
1
2
D4
1
2
D5
1
2
D6
REC
1
2
D11
DATA
M
U
X
TRANSPOSE
SW1
SW9 SW10
1
2
D1
1
2
D9
1
2
D10
S
S
D
0
S
S
D
1
S
S
D
2
SSC7
SSC6
SW11
D
A
T
A
KBD_VEL
SYNC_START
TONE1 TONE2 TONE3
STY_PROG+ STY_PROG-
SW17 SW18
SW25
SW41 SW42 SW43
1
2
D17
1
2
D18
1
2
D25
1
2
D41
1
2
D42
SSC5
SSC4
SSC3
SSC2
SSC1
SW27
USER_WRITE
MODE_ARR_MDRUM MODE_ORGAN
START/STOP
TONE4 TONE5 TONE6
INTEL/LAYER
SW30
SW37 SW38
SW44 SW45 SW46
1
2
D30
1
2
D37
1
2
D38
1
2
D43
1
2
D44
1
2
D45
1
2
D46
1
2
D53
1
2
D54
VOLUME_UP VOLUME_DWN
1
2
D27
TEMPO+ TEMPO-
TONE_VAR
TONE7 TONE8
STY_MORPH+ STY_MORPH-
METRONOME
SW23 SW24
SW31 SW32
SW39 SW40
SW47 SW48
1
2
D23
1
2
D24
1
2
D31
1
2
D32
1
2
D39
1
2
D40
1
2
D47
1
2
D48
1
2
D55
1
2
D56
STYLE ONE TOUCH
UPPER+ UPPER-
ENDING
SW55 SW56
SW63 SW64
1
2
D63
1
2
D64
VARIATION
MUX
A
1
B
2
C
3
Y0
15
Y1
14
Y2
13
Y3
12
Y4
11
Y5
10
Y6
9
Y7
7
G1
6
G2A
4
G2B
5
V
C
C
1
6
G
N
D
8
IC6
74HC238
SC0
SC1
SC2
SC4
5VD
5VD
INTRO
SW53 SW54
SW60 SW61 SW62
1
2
D59
1
2
D60
1
2
D61
1
2
D62
ORIGINAL FILL
ARRANGER+ ARRANGER-
SSC0
SSC1
SSC2
SSC3
SSC4
SSC5
SSC6
SSC7
C1
100nF
A
1
B
2
C
3
Y
0
1
5
Y
1
1
4
Y
2
1
3
Y
3
1
2
Y
4
1
1
Y
5
1
0
Y
6
9
Y
7
7
G
1
6
G
2
A
4
G
2
B
5
VCC
16
GND
8
IC8
74HC238
A
1
B
2
C
3
Y
0
1
5
Y
1
1
4
Y
2
1
3
Y
3
1
2
Y
4
1
1
Y
5
1
0
Y
6
9
Y
7
7
G
1
6
G
2
A
4
G
2
B
5
VCC
16
GND
8
IC9
74HC238
C4
33uF16
3
4
5
6
7
8
2
1
9
20
19
18
17
16
15
14
13
12
1110
CN1
AMPC1.2720P
SC0
SC1
SC2
SC3
SC4
5VD
DEMO
SW57 SW59
1
2
D57
SSC0
CHORUS_REV
SSD0
SSD1
SSD2
SSD3
SSD4
SSD5
SSD6
SSD7
TO LCD
Bulb Lamp
C6
100uF16
21
CN2
5045-02A
NIU
5VD
45678932
1
CA1
8x100pF
to Left Keyb Pcb to Right Keyb Pcb
3
4
5
6
7
8
2
1
9
10
11
12
13
14
15
16
CN4
AMPC1.2716P
3
4
5
6
7
8
2
1
9
10
11
12
13
14
15
16
CN3
AMPC1.2716P
MK0
BR0
MK1
BR1
MK2
BR2
MK3
BR3
MK4
BR4
MK5
BR5
MK6
BR6
MK7
BR7
B
R
0
B
R
1
B
R
2
B
R
3
B
R
4
B
R
5
B
R
6
B
R
7
M
K
0
M
K
1
M
K
2
SSD0
SSD1
SSD2
SSD3
SSD4
SSD5
SSD6
SSD7
SSD0
SSD1
SSD2
SSD3
SSD4
SSD5
SSD6
SSD7
5VD
B
R
0
B
R
1
B
R
2
B
R
3
B
R
4
B
R
5
B
R
6
B
R
7
M
K
0
M
K
1
M
K
2
M
K
3
M
K
4
M
K
5
M
K
6
M
K
7
C7
100nF
45678932
1
CA2
8x100pF
SC3SC4
0
1
0
0
1
1
SWITCHES
SWITCHES
MK0-MK7
BR0-BR7
X
X
M
K
3
M
K
4
M
K
5
M
K
6
M
K
7
C8
100nF
To CPU Board Cn4
19
CIRCUIT DIAGRAM (CONTROL PCB ASSY EM-10)