Roland G-70 - Circuit Board & Circuit Diagram (Phones); Circuit Board & Circuit Diagram (Encoder); Circuit Board & Circuit Diagram (D-Beam)

G-70
Feb.2005
131
130
CIRCUIT BOARD & CIRCUIT DIAGRAM (PHONES)
View from component side
View from component side
A
A
A
PHONES
L1=L2=BL02RN2-R62T2
1
1
2
2
3
3
4
4
5
5
6
6
CN4
53014-0610
CN4
53014-0610
C1
100nFC
C1
100nFC
L3L3
C3
100nFC
C3
100nFC
C2
100nFC
C2
100nFC
C4
100nFC
C4
100nFC
8
7
3
2
4
5
1
JK1
YKB21_5006
JK1
YKB21_5006
L2L2
L1L1
SW0
SW1
ENCA
GND
ENCB
TO RIGHT PANEL
(CN8)
A
C
B
DE
ENC1
EC12E24244F25
A
C
B
DE
ENC1
EC12E24244F25
3
4
2
1
5
CN1
53015-0510
CN1
53015-0510
CIRCUIT BOARD & CIRCUIT DIAGRAM (ENCODER)
CIRCUIT BOARD & CIRCUIT DIAGRAM (D-BEAM)
PULSE:
DUTY:12.5%
FREQUENCY:6.84KHz
PULSE WIDTH:18.3uS
PULSE
BEAM BEAM
-12V
12V -12V 5V
5V
5V 12V
12V
D215
TPS708
1 2
CN15
53014-0710
3
4
2
1
5
6
7
R70
10K
C46
150pF
R71
100
R72
1.8
R73
1.8
R74
100
R75
22
R76
22
Q16
2SC2235Y
3
1
2
Q17
2SC1815GR
3
1
2
R78
100K
R79
1K
R80
10K
R81
1M
C49
10nF
5%
C50
0.1C
C51
0.1C
D216
TLN201
21
R77
3K3
C43
1uF25
IC10B
UPC4570HA
7
6
8
IC10A
UPC4570HA
3
4
2
1 5
9
C47
0.1C
C48
10uF16
C44
10uF16
C45
10uF16
From CN21 on MAIN B.
View from component side