Roland BK-5 Service Notes page 47

Jan. 2012
CIRCUIT DIAGRAM (JACK B. 2/5)
R135 0
2MHz
2MHZ
R136 NIU
IC11C NIU
TC7WU04FU R137 NIU
IC11A NIU
1 7 6 2
TC7WU04FU
D
R138
X1 NIU
NIU
C145 C146
NIU NIU
D D
XRST5V
+5VD
IC11D NIU
TC7WU04FU
C148
NIU IC11B NIU
TC7WU04FU
3 5
D
54
+5VD
C138 100nF
C139 100nF
C140 100nF
C142 100nF
D
79
A1
99
D15
98
D14
97
D13
96
D12
95
D11
94
D10
93
D9
92
D8
90
D7
89
D6
88
D5
87
D4
86
D3
85
D2
84
D1
83
D0
81
RD
78
CS
80
INT
KSMTXD
73
TXEN
+5VD
72
SMOD
71
POLA
27
MASK
2
2KBD
D
61
CLKIN
C144
100pF
D
R139 0
70
CKCT6
R140 0
69
CKCT5
R141 0
68
CKCT4
R142 0
67
CKCT3
R143 NIU
66
CKCT2
R144 NIU 65
CKCT1
R145 0
64
CKCT0
D
77
RST
R146 0
62
TEST0
C147
100pF
D
BR6
BR5
BR4
BR3
BR2
BR1
BR0
BR7
D
D+3.3
+5VD
C141 100nF
C143 100nF
R131
10K
D
R132 100
KSMTXD
74
TXD
+5VD
MK17
59
SC17
BR17
58
PR17
MK16
57
SC16
BR16
56
PR16
MK15
55
SC15
BR15
54
PR15
MK14
53
SC14
BR14
52
PR14
MK13
41
SC13
BR13
40
PR13
MK12
39
SC12
BR12
38
PR12
MK11
37
SC11
BR11
36
PR11
35 MK10 R133
SC10
BR10 NIU
34
PR10
MK9
33
SC9
BR9
32 R134 0
PR9
31
SC8
BR8
30
PR8
MK7
29 RA1A 1 8 4x100
SC7
RA1B 4x100 BR7
28 2 7
PR7
RA1C 4x100 MK6
16 3 6
SC6
RA1D 4x100 BR6
15 4 5
PR6
RA3A 4x100 MK5
14 1 8
SC5
RA3B 4x100 BR5
13 2 7
PR5
RA3C 4x100 MK4
12 3 6
SC4
RA3D 4x100 BR4
11 4 5
PR4
RA4A 4x100 MK3
10 1 8
SC3
9 RA4B 2 7 4x100 BR3
PR3
RA4C 4x100 MK2
8 3 6
SC2
RA4D 4x100 BR2
7 4 5
PR2
MK1
6 RA5A 1 8 4x100
SC1
RA5B 4x100 BR1
5 2 7
PR1
RA5C 4x100 MK0
4 3 6
SC0
BR0
3 RA5D 4 5 4x100
PR0
49
T15
48
T14
47
T13
46
T12
45
T11
44
T10
43
T9
42
T8
RA7A 4x100 T7
24 1 8
T7
T6
23 RA7B 2 7 4x100
T6
RA7C 4x100 T5
22 3 6
T5
RA7D 4x100 T4
21 4 5
T4
T3
20 RA8A 1 8 4x100
T3
RA8B 4x100 T2
19 2 7
T2
RA8C 4x100 T1
18 3 6
T1
RA8D 4x100 T0
17 4 5
T0
IC10
S1L50282F32H200(ksm)
TO MSK-2
KEYBOARD
T0 T1
1 2
T2 T3
3 4
T4 T5
5 6
T6 T7
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
CN3
6501S-26GS2
D
KSMTXD
+5VD
D
MK6
MK5
MK4
MK3
MK2
MK1
MK0
MK7
RA2
8x47K
MK6
9
MK5
8
BR7
7
MK7
6
BR6
5
BR4
4
MK4
3
BR5
2
RA6
8x47K
MK3
9
BR3
8
MK2
7
BR2
6
MK1
5
BR0
4
MK0
3
BR1
2