Roland VG-88 Service Notes

19
Apr. 2000 VG-88
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
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CIRCUIT DIAGRAM (MAIN-3)
／回路図 (MAIN-3)
+
-
+
A
TE
D
R125
22k
6
IC24A
TC4066BF
IC29B
NJM2100M
8
84
+
M
2
3
IC21B
UPC4570G
IC21A
UPC4570G
3
k
JK
4
02
3
3
PHONES
OUTPUT
L(MONO)
OUTPUT
R
64FS
256FS
RESET
AD0
FS
A
A
++
+
A
A
A
A
A
A
D
D
D
A
A
AD
A
A
C97
10/16
R78
1k
L9
N.I.U.
C116
10/16
R92
1k
L10
N.I.U.
L6
N.I.U.
L7
N.I.U.
JK4
HLJ0544-01-010
1
2
3
R117
470
C147
0.0022
C153
0.1
C122
100/6.3
R118
100
C165
0.1
C119
0.1
C144
0.1
C137
0.0022
R97
10
IC32
AK4522VF
VREFH
1
AINR+
2
AINR-
3
AINL+
4
AINL-
5
VA
6
AGND
7
DIF0
8
DIF1
9
LRCK
10
SCLK
11
SDTI
12
SDTO
13
SMUTE
14
DEM0
15
DEM1
16
MCLKI
17
VD
18
DGND
19
PD
20
CMODE
21
AOUTL
22
AOUTR
23
VCOM
24
R121
470
JK6
HLJ0544-01-110
1
2
3
JK7
HLJ0544-01-110
1
2
3
C204
100/6.3
C203
100/6.3
R82
100k
Q4
2SC4213A
R164
1k
Q5
2SC4213A
1
23
R165
1k
Q6
2SC4213A
1
23
R163
1k
Q7
2SC4213A
1
23
R162
1k
C215
0.01
R94
100k
C130
0.1
C152
4.7/25
C143
4.7/25
C164
100/6.3
C131
0.1
MUTE
GK51 GK50
GK61 GK60
A
+
+
+
+
A
A
A
A
A
A
A
R68
47kD
R62
10kD
C82
0.001
C90
10p
R84
10kD
R85
47kD
C111
10p
C106
0.001
R77
1k
R91
1k
R60
100/2W
+
-
6
5
7
+
-
IC29A
NJM2100M
2
3
1
C159
10p
R109
22k
C134
10p
R131
6.8k
R136
22k
C176
10/16
R133
22k
C175
10/16
IC26C
TC4066BF
89
6
R132
8.2k
R112
22k
IC26A
TC4066BF
12
13
R108
8.2k
IC26B
TC4066BF
43
5
IC19C
M5216FP
84
C172
0.1
IC26E
TC4066BF
14
7
R107
6.8k
C115
10/16
+
-
IC19B
M5216FP
6
5
7
C85
150p
C83
10/16
+
-
6
5
7
+
-
2
3
1
R93
100k
IC26D
TC4066BF
1110
12
C68
0.1
C211
470/16
C210
470/16
C75
0.1
D7
1SS352
12
C69
10/16
R51
100/2W
R67
100k
+
-
IC19A
M5216FP
2
3
1
C70
150p
D6
1SS352
12
1
23
C96
10/16
R69
100
R52
100k
R55
100
R81
100k
OUTPUT VR
GK SY.VOL -> CPU
64FS
256FS
FS
RESET
AD1
GK_VOL
A
D
+
++
A
A
A
A
+
A
+
5D
A
A
A
A
A
A
A
D
D
DAD
+
D
C87
10p
R72
47k
C91
47/16
R73
47k
C92
10/16
R89
47k
C113
10/16
DA4
1SS302
21
3
C146
0.0022
C151
0.1
C121
100/6.3
R116
100
C163
0.1
C118
0.1
C142
0.1
C136
0.0022
R96
10
IC31
AK4522VF
VREFH
1
AINR+
2
AINR-
3
AINL+
4
AINL-
5
VA
6
AGND
7
DIF0
8
DIF1
9
LRCK
10
SCLK
11
SDTI
12
SDTO
13
SMUTE
14
DEM0
15
DEM1
16
MCLKI
17
VD
18
DGND
19
PD
20
CMODE
21
AOUTL
22
AOUTR
23
VCOM
24
R120
470
C173
0.1
+
-
IC29C
NJM2100M
+
-
IC20C
UPC4570G
84
C99
10p
+
-
IC20B
UPC4570G
6
5
7
CN8
B5B-PH-K-S
1
1
2
2
3
3
4
4
5
5
R87
47k
C110
47/16
C107
10p
C114
10p
+
-
IC20A
UPC4570G
1
R139
33kD
R141
56k
+
-
IC21C
UPC4570G
84
C202
100/6.3
C201
100/6.3
C214
0.01
R169 N.I.U.
R178 22
R137
100kD
R179 22
R170 N.I.U.C74
0.1
C128
0.1
C73
0.1
C162
100/6.3
C67
0.1
C66
0.1
C150
4.7/50
C129
0.1
GK S1 -> CPU
GK S2 -> CPU
AD3
256FS
64FS
FS
GK_S1
RESET
DA3
GK30
GK40
GK_S2
+
+
+
5D
+
5D
+
5D
D
+
5D
D
+
-
+
5D
+
5D
+
5D
+
5D
A
+
-
+
A
D
DD
D
R71
10k
R115
470
IC28B
NJM2100M
IC28A
NJM2100M
1
C158
10p
R105
22k
C133
10p
IC25D
TC4066BF
1110
12
R129
22k
IC25C
TC4066BF
8
IC25A
TC4066BF
IC25B
TC4066BF
43
5
R65
100
C171
0.1
IC25E
TC4066BF
14
7
IC23
AK4522VF
R76
10k
R86
10k
R88
10k
3
Q11
RN1309
1
23
Q9
RN2307
1
32
Q12
RN1309
1
23
Q10
RN2307
1
2
R146
18k
R145
47k
R147
18k
R144
47
L22
N2012Z601
DA15
1SS302
21
3
CN11
1
1
2
2
CN10
RIBON CABLE 2X90-P2.0
1
1
2
2
CN12
RIBON CABLE 2X90-P2.0
1
1
2
2
CN13
1
1
2
2
R80
47k
C141
4.7/50
C65
470/16
C72
470/16
R90
47k
C222
120p
2
GUITAR OUT
64FS
256FS
FS
AD2
GK31
GK41
DA1
++
+
+
+
+
+
A
A
A
A
A
A
A
D
DAD
+
-
A
C71
0.1
C76
100/6.3
R53
10
+
-
6
5
7
+
-
2
3
R127
6.8k
R135
22k
9
6
R128
8.2k
R111
22k
12
13
R103
6.8k
R104
8.2k
C109
0.1
C105
0.1
C98
0.0022
R64
470
R75
470
C169
0.1
+
-
IC28C
NJM2100M
84
VREFH
1
AINR+
2
AINR-
3
AINL
4
AINL-
5
VA
6
AGND
7
DIF0
8
DIF1
9
LRCK
10
SCLK
11
SDTI
12
SDTO
13
SMUTE
14
DEM0
15
DEM1
16
MCLKI
17
VD
18
DGND
19
PD
20
CMODE
21
AOUTL
22
AOUTR
23
VCO
24
C167
10/16
C174
10/16
3
HLJ0544-01-110
1
2
3
C198
100/6.3
C197
100/6.3
C89
0.1
C86
0.0022
C212
0.01
C221
120p
DA14
1SS302
21
3
L21
N2012Z601
C88
4.7/50
C78
0.1
C104
4.7/50
C108
100/6.3
C79
0.1
MU
+
A
+
++
+
+
A
A
A
A
D
A
A
C81
10/16
C80
10p
C95
10p
+
-
IC22B
NJM2100M
6
5
7
+
-
IC22A
NJM2100M
2
3
1
C120
100/6.3
C117
0.1
C140
0.1
R95
10
IC30
AK4522VF
VREFH
1
AINL+
4
AINL-
5
VA
6
LRCK
10
SCLK
11
SDTI
12
SDTO
13
MCLKI
17
VD
18
+
-
IC22C
NJM2100M
4
C112
0.1
C103
470/16
R58
12kD
R61
100kD
R79
6.8kD
R70
12kD
R114
100
R45
1k
L5
N.I.U.
R46
1k
C63
10/16
IC24D
TC4066BF
C200
100/6.3
C199
100/6.3
Q3
2SC4213A
1
23
R161
4.7k
C102
0.1
C139
4.7/50
C126
0.1
R50
100k
RESET
D
D
A
A
A
D
DAD
+
-
+
-
-
A
A
A
-
A
+
A
A
A
C145
0.0022
C149
0.1
C161
0.1
AINR+
2
AINR-
3
AGND
7
DIF0
8
DIF1
9
SMUTE
14
DEM0
15
DEM1
16
DGND
19
PD
20
CMODE
21
AOUTL
22
AOUTR
23
VCOM
24
R119
470
DA6
1SS302
21
C213
0.01
DA11 1SS302
21
3
L18
N2012Z601
C218
120p
DA13
1SS302
21
3
L19
N2012Z601
DA12
1SS302
21
L20
N2012Z601
C160
100/6.3
L14 N2012Z601
C179
0.1
C182
100/16
IC34
AN79L07M
IN
2
OUT
3
COM
1
L16 N2012Z601
C180
0.1
C219
120p
C195
100/16
C184
0.1
IC33
AN78L07M
IN
3
OUT
1
COM
2
L15 N2012Z601
C220
120p
C183
0.1
C181
100/16
C196
100/16
CN9
TCS5095-114152
1.SIG1
5.SIG5
10.S1
2.SIG2
9.N.C.
4.SIG4
13.-7V
8.SY.VOL
12.+7V
3.SIG3
6.SIG6
7.GT.SIG
11.S2
GK-IN
GK11 GK10
GK21 GK20
+
+
+
+
+
AA
A
-
+
-
A
A
A
R113
470
+
-
IC27A
NJM2100M
2
3
1
C157
10p
R101
22k
C132
10p
R123
6.8k
R134
22k
C166
10/16
C138
10/16
IC24C
TC4066BF
89
R124
8.2k
R110
22k
C135
0.0022
12
13
R99
6.8k
R100
8.2k
IC24B
TC4066BF
43
5
+
-
IC18C
UPC4072G2
4
C168
0.1
+
-
IC27C
NJM2100M
84
IC24E
TC4066BF
14
7
+
-
IC27B
NJM2100M
6
5
7
R74
4.7k
C170
0.1
1110
12
C227
1000/6.3
C228
N.I.U.
R18
N.I.U.
DA10 1SS3
21
C217
120p
L17
N2012Z601
C100
100/6.3
R83
4.7k
C148
4.7/50
C101
0.1
R54
47
GUITAR IN
A
+
A
+
-
+
-
+
+
-
A
A
A
R59 10kD
R56
2.2kD
C84
0.047_Poly
+
-
IC18B
UPC4072G2
6
5
7
+
-
IC18A
UPC4072G2
2
3
1
8
R63
10k
C94
470/16
C62
10/16C64
0.047_Poly
R47
10k
L8
N.I.U.
R57
27kD
R49
100k
JK5
HLJ0544-01-110
1
2
3
D4
1SS352
12
D5
1SS352
12
DA9
N.I.U.
21
3
C93
0.1
DA8
N.I.U.
21
3
R185
N.I.U.
C177
10/16
DA5
N.I.U.
21
3
C77
0.0068
R44
47
R66
2.2M
R48
2.2M
R142
10k
L12
N.I.U.
L13
N.I.U.
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
C230
0.1
DA7
1SS302
1
3
C231
0.1
C232
0.1
C127
0.1
R149
47k
R151
47k
R150
47k
R148
47k

Roland VG-88 Specifications

General

Brand	Roland
Model	VG-88
Category	Music Pedal
Language	English