Left Control Pcb Assy - Roland AX-7 Service Notes

Midi keyboard controller
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A
LEFT CONTROL PCB ASSY & CIRCUIT DIAGRAM
B
C
D
E
F
View from component side
G
H
I
J
From Ribbon Sensor
K
L
M
From Modulation Control Unit
N
O
P
Data Control Pot.
Q
R
S
T
U
7
8
9
10
11
12
13
ASSY 7772502000
VREF
R1
820
R2
CN1
10K
8
7
R3 1K
R4 100K
6
5
4
3
2
R6
1
R5
C1
10K
820
NIU
5597-08APB
GNDREF
C2
BEND
100nF
DGND
D10
BZW04_5V8B
VREF
R7
10K
CN2
CONN_2X1
MOD
2
1
GNDREF
VREF
2
DATA
VR1
RK09L1120100KB1F15AC
100KLIN Mono
GNDREF
CN3
22FE_ST_VK_N
AX-7
14
15
16
17
18
19
20
RW0
RW1
RW2
RW7
CL3
SW1
LOWER
SSD0
SSD1
SSD2
HOLD
D5
D
To Main Board
(CN9)
14
21
22
23
24
25
26
D1
2
1
LOWER
D2
2
1
UPPER
D3
2
1
SPLIT
D4
2
1
START/STOP
All switches are EVQPAE05R.
All LEDs are 3SLR37VR3F.
SW2
SW3
UPPER
SPLIT
SW4
SW5
DOWN
UP
SW6
START/STOP
SW7
HOLD
D6
D7
D8
D9
Nov, 2001
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