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Roland Manuals
Musical Instrument Amplifier
JC-40
Service notes
Circuit Diagram (Main Board: 3/4) - Roland JC-40 Service Notes
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Nov. 2015
Circuit Diagram (Main Board: 3/4)
fig.d-main-3.eps@L
INPUT L/MONO
3 3
4 4
R91
C26
6 6
1.5k
0.1uF
1 1
C281J104J20F200
JK1
PJ-644C-04-EP
AG
R170
DETECT_INPUT1
100
C168
1000pF
DG
AG
INPUT R
3 3
4 4
R179
C180
6 6
1.5k
0.1uF
1 1
C281J104J20F200
JK2
PJ-644C-04-EP
AG
R193
DETECT_INPUT0
100
C214
1000pF
DG
AG
C70
R49
22k
NJM4580M(TE2)
AG
1%
2
UnPop
3
C68
R110
22k
NJM4580M(TE2)
AG
1%
6
UnPop
5
A+8V
C52
C50
0.1uF
UnPop
10uF
IC7
16V
NJM4580M(TE2)
AG
C51
10uF
C56
AG
16V
0.1uF
A-8V
24
A+8V
D18
A+8V
1SS362FV(TPL3)
1
2
A2
K1
C61
10uF 16V
A-8V
C60
0.1uF
Q13
AG
3
G
R112
68
R99
1M
C97
AG
10uF 16V
C197
0.1uF
C67
C288
10uF 16V
10uF 16V
A-8V
AG
A+8V
D35
A+8V
1SS362FV(TPL3)
1
2
A2
K1
C198
10uF 16V
A-8V
C196
0.1uF
Q26
AG
3
G
R183
68
R182
1M
C211
AG
10uF 16V
C222
0.1uF
C199
C289
10uF 16V
10uF 16V
A-8V
AG
R17
UnPop
5.6k
47pF
1%
UnPop
R50
0
IC7
1
R104
UnPop
0
UnPop
C100
470pF
R46
UnPop
0
AG
R20
UnPop
5.6k
47pF
1%
UnPop
R111
0
IC7
7
R106
UnPop
0
UnPop
C200
470pF
R47
UnPop
0
AG
A+5V
R39
10k
F (1%)
C44
10uF
16V
C42
R38
C43
0.1uF
10k
10uF
F (1%)
16V
IC4
NJM2115V(TE1)
C20
15pF
AG
UnPop
UnPop
R31
22k
1%
R215
8.2k
C239
1500pF
2
1
R30
33k
1%
3
IC4
C263
15pF
UnPop
NJM2115V(TE1)
UnPop
UnPop
C96
R239
8.2k
C290
1500pF
5pF
R92
180k
1%
R34
8.2k
1%
6
7
5
C204
15pF
IC4
NJM2115V(TE1)
UnPop
A+5V
R178
10k
F (1%)
C195
10uF
16V
C189
R117
C192
0.1uF
10k
10uF
F (1%)
16V
IC6
NJM2115V(TE1)
C111
15pF
AG
UnPop
UnPop
R95
22k
1%
R211
8.2k
C236
1500pF
2
1
R94
33k
1%
3
IC6
C264
15pF
UnPop
NJM2115V(TE1)
UnPop
UnPop
C208
R240
8.2k
C292
1500pF
5pF
R180
180k
1%
R108
8.2k
1%
6
7
5
C169
15pF
IC6
NJM2115V(TE1)
UnPop
AG
D
S
2
1
SPEAKER_MUTE
Q11
1
B
MUTE_FET
R81
22k
R72
2SC4213-A(TE85L.F)
C102
100k
UnPop
0.1uF
AG
D
S
2
1
SPEAKER_MUTE
Q15
1
B
MUTE_FET
R85
22k
R86
2SC4213-A(TE85L.F)
C110
100k
UnPop
0.1uF
C86
10uF16V
C38
A+5V
D33
RB706F-40 T106(PB FREE)
2
1
AG
AG
K1
A2
C21
10uF16V
2
C27
10uF16V
1
A+5V
4
AG
K1
A2
15
2
1
3
RB706F-40 T106(PB FREE)
C23
D34
C39
16
2.2uF
0.1uF
50V
13
AG
PDN_CODEC
C207
10uF16V
C183
A+5V
D38
RB706F-40 T106(PB FREE)
2
1
AG
AG
K1
A2
C82
10uF16V
2
C182
10uF16V
1
A+5V
4
AG
K1
A2
15
2
1
3
RB706F-40 T106(PB FREE)
C177
16
D39
C184
2.2uF
0.1uF
50V
13
AG
PDN_CODEC
+V1
R51
R191
R134
C115
1.8k
180
22k
100uF
1%
0.5%
1%
16V
50V
2
2.2uF
-
4
C85
1
OUT
+
C223
C265
15pF
IC10
2.2uF
TDA2050L-TB5-T
50V
C119
0.1uF
C228
0.1uF
-V1
AG
+V2
R162
R62
R60
C202
1.8k
180
22k
100uF
1%
0.5%
1%
16V
50V
2
2.2uF
-
4
C87
1
OUT
+
C268
15pF
C219
IC23
2.2uF
TDA2050L-TB5-T
50V
R152
22k
1%
C206
0.1uF
C221
0.1uF
-V2
AG
JC-40
A+5V
D+3.3V
R37
2.2
R35
0
C40
10uF
16V
0.1uF
C41
0.1uF
AG
10
AINL
LRCK
LRCK
12
AINR
SCLK
BCK
VCOM
9
SDTO
AD1
IC18
R32
CKS2
AK5358AET
150
CKS1
14
CKS0
DIF
11
PDN
MCLK
MCK
AG
A+5V
D+3.3V
R116
2.2
R109
0
C185
10uF
16V
0.1uF
C188
0.1uF
AG
10
AINL
LRCK
LRCK
12
AINR
SCLK
BCK
VCOM
9
SDTO
AD0
IC13
R96
CKS2
AK5358AET
150
CKS1
14
CKS0
DIF
11
PDN
MCLK
MCK
AG
C118
0.1uF
R143
10
MO 1/2WS J 10R T
C121
0.22uF
16V
C123
0.22uF
16V
PG1
R63
1k
1%
C205
0.1uF
R173
10
MO 1/2WS J 10R T
C210
16V
0.22uF
C218
16V
0.22uF
PG2
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