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Manuals
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Roland Manuals
Musical Instrument
G-70
Service notes
Circuit Diagram (Midi) - Roland G-70 Service Notes
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Also See for G-70
:
Owner's manual
(261 pages)
,
Addendum
(56 pages)
,
Specifications
(4 pages)
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Feb.2005
CIRCUIT DIAGRAM (MIDI)
HOLD SWITCH
L2
L2
2
1
4
3
1
2
3
JK2
JK2
SBT0160W
SBT0160W
HLJ0520_01_110
HLJ0520_01_110
FOOT SWITCH
L3
L3
2
1
4
3
1
2
3
JK3
JK3
SBT0160W
SBT0160W
HLJ0520_01_110
HLJ0520_01_110
+ 5
D
R18
R18
1K8
1K8
FOOT PEDAL
L4
L4
R20
R20
SBT0460
SBT0460
470K
470K
3
2
1
JK4
JK4
D
HLJ_0520_01_010
HLJ_0520_01_010
L10=L11=L12=SBT0160W
1
L5
L5
1
IN
2
2
3
4
L6
L6
1
MIDI
OUT
5
2
6
7
L7
L7
1
THRU
8
2
9
JK5
JK5
C14
C14
YKF51_5046
YKF51_5046
0.1
0.1
L8
L8
C15
C15
SBT0460
SBT0460
+ 5
D
D
0.1
0.1
D
8
IC3G
IC3G
74LS05
74LS05
IC3D
IC3D
74LS05
74LS05
D
FC7
Pedal
Hold
Footsw
94
+ 5
+ 5
+ 5
D
D
D
R3
R3
D6
D6
10k
10k
1N4148
1N4148
R6
R6
3
22K
22K
Q5
Q5
DTA114ES
DTA114ES
2
R7
R7
1K
1K
D8
D8
C4
C4
Q4
Q4
SUST
1N4148
1N4148
BC549B
BC549B
0.1
0.1
FOOT
EXPJ
D
D
+ 5
D
+ 5
D
+ 5
R9
R9
D11
D11
10k
10k
1N4148
1N4148
R11
R11
3
22K
22K
2
R13
R13
1K
1K
D13
D13
C8
C8
1N4148
1N4148
Q8
Q8
0.1
0.1
DTA114ES
DTA114ES
Q7
Q7
D
BC549B
BC549B
+ 5
D
D17
D17
1N4148
1N4148
EXPJ
D18
D18
1N4148
1N4148
D
D21
D21
IC2
IC2
+ 5
D
1N4148
1N4148
6N137
6N137
R22
R22
1
8
NC
VCC
R23 220
R23 220
2
7
LA
EN
3K3
3K3
3
6
LC
OUT
4
4
5
NC
GND
3
C12
C12
+ 5
D
R24 220
R24 220
0.1
0.1
4
R25
R25
4K7
4K7
D
3
R26
R26
220
220
MIDI_OUT
12
13
2
1
IC3F
IC3F
IC3A
IC3A
4
+ 5
74LS05
74LS05
D
74LS05
74LS05
R27
R27
220
220
3
R29
R29
4K7
4K7
R28
R28
220
220
MIDI_IN
10
11
4
3
IC3E
IC3E
IC3B
IC3B
+ 5
Q12
Q12
74LS05
74LS05
74LS05
74LS05
D
BC560B
BC560B
R30
R30
2
22K
22K
+ 5
D
R31
R31
R32
R32
XRST
6
5
9
22K
22K
22K
22K
IC3C
IC3C
74LS05
74LS05
D
Rear
Panel
-Pedals-
THRU
Foot
Foot
Switch
Pedal
D
+ 5
R12
R12
5VC
NIU
NIU
C7
C7
5VC
C6
C6
33uF16
33uF16
5VC
R14
R14
R15
R15
10k
10k
10k
10k
IC1
IC1
M62320P
M62320P
1
SO
D7
1
1
D6
2
3
To RIGHT C.
2
SDA
D5
3
3
D4
4
2
BOARD
4
SCL
D3
5
5
D2
(CN3)
D1
CN1
CN1
C18
C18
C19
C19
D0
53014_0510
53014_0510
NIU
NIU
NIU
NIU
CS2
R19
R19
CS1
NIU
NIU
CS0
D
D
C13
C13
+ 5
D
33uF16
33uF16
1
1
2
2
3
3
4
To MAIN BOARD
4
SUST
D
5
5
FOOT
6
(CN6)
6
EXPJ
7
7
MIDI_ OUT
8
8
MIDI_IN
9
9
EXXRES
10
10
CN2
CN2
B10B_PH_K_S
B10B_PH_K_S
OUT
IN
5VC
5VC
R1
R1
2
1
1K
1K
1
D1
D1
C1
C1
3
1N4148
1N4148
0.1
0.1
D2
D2
Q1
Q1
1N4148
1N4148
FL1
FL1
DTA114ES
DTA114ES
ELKTR391CA
ELKTR391CA
R2
R2
1K
1K
2
1
1
D3
D3
C2
C2
1N4148
1N4148
3
0.1
0.1
D4
D4
FL2
FL2
Q2
Q2
1N4148
1N4148
ELKTR391CA
ELKTR391CA
DTA114ES
DTA114ES
R5
R5
1K
1K
2
1
1
D5
D5
C3
C3
1N4148
1N4148
3
0.1
0.1
FL3
FL3
D7
D7
ELKTR391CA
ELKTR391CA
Q3
Q3
1N4148
1N4148
DTA114ES
DTA114ES
R8
R8
2
1
1K
1K
1
D9
D9
C5
C5
3
1N4148
1N4148
0.1
0.1
FL4
FL4
D10
D10
ELKTR391CA
ELKTR391CA
Q6
Q6
1N4148
1N4148
0.1
0.1
DTA114ES
DTA114ES
R16
R16
2
1
1K
1K
1
D12
D12
C9
C9
3
1N4148
1N4148
0.1
0.1
12
D14
D14
FL5
FL5
11
Q9
Q9
1N4148
1N4148
ELKTR391CA
ELKTR391CA
10
9
DTA114ES
DTA114ES
R17
R17
1K
1K
7
2
1
6
1
5
5VC
D15
D15
C10
C10
4
1N4148
1N4148
3
0.1
0.1
14
D16
D16
FL6
FL6
15
Q10
Q10
1N4148
1N4148
ELKTR391CA
ELKTR391CA
16
DTA114ES
DTA114ES
R21
R21
1K
1K
2
1
3
1
D19
D19
C11
C11
Q11
Q11
1N4148
1N4148
DTA114ES
DTA114ES
0.1
0.1
D20
D20
FL7
FL7
1N4148
1N4148
ELKTR391CA
ELKTR391CA
RA1
RA1
8x10k
8x10k
1
TP1
TP1
TP
TP
C20
C20
0.1
0.1
TP2
TP2
TP
TP
D
D
G-70
3
4
5
1
3
6
7
3
L1
L1
SBT0460
SBT0460
FC-7
JK1
JK1
3
YKF51_5001
YKF51_5001
3
3
3
3
95
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