Roland AX-7 Service Notes

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16
11
AX-7
Nov, 2001
3X7 SEGMENT DISPLAY
From Right Control Board
(CN1)
CL0
CL2
CL1
DRW7
DRW7
DRW7
DRW4
DRW2
DRW0
DRW5
DRW1
DRW5
DRW3
DRW4
DRW0
DRW0
DRW4
DRW1
DRW2
DRW6
DRW6
DRW5
DRW1
DRW3
DRW3
DRW2
DRW6
DRW0
DRW2
DRW4
DRW6
CL0
CL2
DRW1
DRW3
DRW5
DRW7
CL1
D D
DS1
LB603VF
7
6
4
2
1
9
10
38
5
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
d2
e2
c1
d1
e1
DP2
e3
A1ac2
DP1
d3
g3
c3
DP3
b3
a3
f3
A3
A2
b2
a2
g2
f2
b1
a1
A1b
f1
g1
CN1
3
4
5
6
7
2
1
8
9
10
11
12
13
14
DISPLAY PCB ASSY & CIRCUIT DIAGRAM
ASSY 7772504000
View from component side
(CN2)
From Right Control Board
4V
A
A
8V
8V
4V
A
A
A
8V
A
D
CN1
53014_0510
3
4
2
1
5
D1
TLN201
21
D3
1N4148
1 2
-
IC1B
UPC4570HA
7
6
8
-
IC1A
UPC4570HA
3
4
2
R3
100K
R2
10K
-
IC1C
UPC4570HA
1 5
9
R4
100K
C5
10uF16
D2
TPS
708
1 2
R1
3K3
C1
1uF16
R5
1M
C2
10nF
POLY 5%
C4
100nFC
C3
10uF16
R6
100K
R7
100K
C6
100nFC
C7
NI
U
D-BEAM PCB ASSY & CIRCUIT DIAGRAM
ASSY 7772503000
View from component side

Roland AX-7 Specifications

Power

power supply	Batteries, AC/DC adaptor (DC 9V)
power supply option	Roland ACA adaptor (9V, 200mA)
connectors	DC IN (adaptor)

Keyboard and Display

keyboard	45 keys, velocity sensitive
display	3 x 7 segments
realtime controllers	Data Entry knob, Expression Bar/Touch Controller, D Beam Controller, Sustain button

Weight and Dimensions

width	1010 mm
depth	195 mm
height	102 mm
weight	3 kg