Circuit Diagram (Main 3/6 - Key Section) - Roland EXR-5 Service Note

Oct.2003

CIRCUIT DIAGRAM (MAIN 3/6 - KEY SECTION)

SC[0..4]
S C0
S C1
S C2
SC3
S C4
22pFs NIU
C353 22pFs NIU 22pFs NIU
C354 C355
22pFs NIU 22pFs NIU
C356 C357
D
SSD[0..7]
SSD[0..7]
C74
33uF25s
C75
100nFs
KSCLK
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
A[0..1]
XKEYINT
XRD
D[0..7]
XWRL
XKEY
XRST
C76
4n7s
D
XRD
XWRL
XKEY
XKEYINT
XRST
KSCLK
32
5VD
IC32
D
74HC238F NIU IC50
74HC238F NIU
5VD
16 16
VCC VCC
C7
100nFs NIU
8 8 C359
GND GND
100nFs NIU
D D
5VD
RA26
EXB_A10E_103_J
FL3
5VD
ELKE471FA MK0_K
2
BR0_K
3 1 3
MK1_K
4
BR1_K
5
MK2_K
6
D
IC9 BR2_K
7
SSC1080F0B MK3_K
8
BR3_K
9
D
RA27
EXB_A10E_103_J
MK10 MK4_K
49 24 2
CLK SC10
BR10 BR4_K
23 3
PR10
MK9 MK5_K
22 4
SC9
BR9 BR5_K
48 21 5
A1 PR9
MK8 MK6_K
47 19 6
A0 SC8
BR8 BR6_K
18 7
PR8
MK7_K MK7_K
17 8
SC7
BR7_K BR7_K
44 16 9
D7 PR7
MK6_K
43 15
D6 SC6
BR6_K RA28
42 14
D5 PR6
MK5_K EXB_A10E_103_J
41 13
D4 SC5
BR5_K MK8
40 12 2
D3 PR5
MK4_K BR8
39 11 3
D2 SC4
BR4_K MK9
38 10 4
D1 PR4
MK3_K BR9
37 9 5
D0 SC3
BR3_K MK10
8 6
PR3
MK2_K BR10
6 7
SC2
BR2_K
34 5 8
INT PR2
MK1_K
4 9
SC1
BR1_K
36 3
RD PR1
MK0_K RA29
35 2
WR SC0
BR0_K EXB_A10E_103_J
45 1
CS PR0
T0_K
2
T7_K T1_K
31 3
T7
T6_K T2_K
50 30 4
RESET T6
T5_K T3_K
29 5
T5
T4_K T4_K
28 6
T4
T3_K T5_K
51 27 7
TEST1 T3
T2_K T6_K
52 26 8
TEST2 T2
25 T1_K 9 T7_K
T1
T0_K
32
T0
D
B R0_M
1
B R1_M
2
B R2_M
3
B R3_M
4
B R4_M
1
B R5_M
2
B R6_M
3
B R7_M
4
MK 0_M
1
MK 1_M
2
MK 2_M 3
MK 3_M
4
MK 4_M 1
MK 5_M
2
MK 6_M 3
C358 MK 7_M 4
33uF25s NIU
SSD0 1
SSD1 2
SSD2 3
SSD3 4
SSD4 1
SSD5 2
SSD6 3
SSD7 4
BR0_K
1
BR1_K
2
BR2_K
3
BR3_K
4
BR4_K
1
BR5_K
2
BR6_K
3
BR7_K
4
MK0_K
1
MK1_K
2
MK2_K
3
MK3_K
4
MK4_K
1
MK5_K
2
MK6_K
3
MK7_K
4
T0_K
1
T1_K
2
T2_K
3
T3_K
4
T4_K
1
T5_K
2
T6_K
3
T7_K
4
C77 100pFs
C79 100pFs
C81 100pFs
C83 100pFs
C85 100pFs
C87 100pFs
C89 100pFs
C91 100pFs
C93 100pFs
C95 100pFs
D
BR0 RA49
8
BR1 4X0s NIU
7
BR2
6
BR3
5
RA50
BR4 4X0s NIU
8
BR5
7
BR6
6
BR7
5
RA51
MK0 4X0s NIU
8
MK1
7
6 MK2
MK3
5
RA52
8 MK4 4X0s NIU
MK5
7
6 MK6
5 MK7
8 T0
T1
7 RA53
6 T2 4X0s NIU
T3
5
8 T4
T5
7 RA54
T6
6 4X0s NIU
T7
5
BR0 RA55
8
BR1 4X0s
7
BR2
6
BR3
5
RA56
BR4 4X0s
8
BR5
7
BR6
6
BR7
5
RA57
MK0 4X0s
8
MK1
7
MK2
6
MK3
5
RA58
MK4 4X0s
8
MK5
7
MK6
6
MK7
5
T0
8
T1 RA59
7
T2 4X0s
6
T3
5
T4
8
T5 RA60
7
T6 4X0s
6
T7
5
BR0 MK0
C78 100pFs
BR1 MK1
C80 100pFs
BR2 MK2 100pFs
C82
BR3 MK3
C84 100pFs
BR4 MK4
C86 100pFs
BR5 MK5
C88 100pFs
BR6 MK6
C90 100pFs
BR7 MK7
C92 100pFs
BR8 MK8
100pFs
C94
BR9 MK9
C96 100pFs
D
EXR-5
CN8
AMPC1_2716P
MK0 1 16 T0
BR0 2 15 T1
MK1 T2
3 14
BR1 4 13 T3
MK2 5 12 T4
BR2 6 11 T5
MK3 7 10 T6
BR3 8 9 T7
To LEFT CONTACT PCB Assy
CN9
AMPC1_2716P
MK4 T0
1 20
BR4 T1
2 19
MK5 T2
3 18
BR5 T3
4 17
MK6 T4
5 16
BR6 T5
6 15
MK7 T6
7 14
BR7 T7
8 13
MK8 MK9
9 12
BR8 BR9
10 11
To RIGHT CONTACT PCB Assy
33