Roland G-70 - Circuit Board & Circuit Diagram (Power)

G-70
Feb.2005
127
126
CIRCUIT BOARD & CIRCUIT DIAGRAM (POWER)
View from component side
+12V
-12V
A.GND
have
Use only listed parts for replacement.
The parts marked
SAFETY PRECAUTIONS:
safety-related characteristics.
+15V
-15V
AGND
+5V
+5V
DGND
DGND
From Sharp B034 SWPS
(CN2)
TO MAIN BOARD
TO FDD
(CN 1)
TO AUDIO BOARD
(CN 7)
TO INVERTER Board
INLET BOARD
N
L
MAINS
To Sharp B034 SWPS
(CN1)
RM# dim.13*25
TO HARMONY BOARD
(CN 1)
IN
3
OUT
2
COM
1
IC2
uA7912CV
IC2
uA7912CV
12
C12
6800uF6R3
C12
6800uF6R3
12
C10
1000uF16
C10
1000uF16
1
1
2
2
3
3
4
4
CN4
5045_04A
CN4
5045_04A
R1
NIU
R1
NIU
C6
100nFC
C6
100nFC
1
23
Q1
jumper
Q1
jumper
12
C7
100uF16
C7
100uF16
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
CN10
53014-0910
CN10
53014-0910
C8
100nFC
C8
100nFC
12
C13
6800uF6R3
C13
6800uF6R3
12
C11
6800uF6R3
C11
6800uF6R3
12
C4
100uF16
C4
100uF16
C2
100nFC
C2
100nFC
1
1
2
2
3
3
CN5
5045_03A
CN5
5045_03A
C9
100nFC
C9
100nFC
1 2
SW1
SDDLB1B2D_TV5
SW1
SDDLB1B2D_TV5
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
CN1
B10B-PH-K-S
CN1
B10B-PH-K-S
12
C1
47uF25
C1
47uF25
3
4
2
1
5
6
7
CN3
B7B_XH_A
CN3
B7B_XH_A
C14
NIU
C14
NIU
IN
1
OUT
2
COM
3
IC1
uA7812CV
IC1
uA7812CV
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
CN2
B11B-PH-K-S
CN2
B11B-PH-K-S
2
1
CN6
B2P3_VH
CN6
B2P3_VH
1
2
N
L
INLET1
KB_42R65_1114
N
L
INLET1
KB_42R65_1114
J1
JUMPER@
J1
JUMPER@
12
C5
47uF25
C5
47uF25
C3
100nFC
C3
100nFC