Roland VS-1680 Service Notes page 24

VS-1680
1 2 3 4 5 6
A LCD CONTRAST BOARD (71015967)
B
C
D
E
F
VCC
CN700
BOARD_IN12S
G
1 D3
FROM MAIN BOARD
2 D2
3 D1
4 D0
5 DISP
6 CP2
H
7 CP1
8 S
9 VDD
10 VDD C700
11 GND 100/6.3V(KS)
12 GND
I
VCC
R700
J
1
R701
180
K
C701
100/6.3V(KS)
L
M
N
O
P
Q
R
S
T
U
24
7 8 9 10 11 12
VCC
52045-1245
VEE
VSS
VDD
D3
D2
D1
D0
DISP
NC
CP2
CP1
S
L700 D700
B3B-PH-K-S
RCH-875-151K AK06
2
R702 25VOUT
3
1K CENTER
OUT
IC700
1
8 1
Q700
CD CS R703
7 2
C1815GR
SI ES 18K R705
6 3
V+ GT 18K
4 5
GND INV
C702
NJM2360D
R704
560P
1K
C705
47/35V(KS)
C703
47/35V(KS)
VCC
CN703
IC701
S2(4-2.3)B-XH-A
1 3
+VIN IOUT1
IOUT
4
IOUT2
IOUT-R
C704
100/6.3V(KS)
2 5
-VIN IOUT-RTN
CXA-M10A-L
13 14 15 16 17 18
MIDI BOARD (70906756)
CN701
1
LCD SHARP
2
3
4
5
6
7
8
9
10
11
12
C300
100/6.3V(KS)
CN702
VCC
1
CONTRAST(5KB)
2
3
CN300
BOARD_IN6S
1 MIDIOUT
2 SELECT
FROM
3 +5V
MAIN
4 MIDIIN
5 RESET
6 GND
1
LCD BACKLIGHT
2
19 20 21 22 23 24
MIDI IN/OUT
OUT/THRU IN
5 4 5
2
FL300
SBT-0260
FL301
SBT-0260
FL302
SBT-0260
VCC
R300 R301
220 220
Q300
D300
+
DTA114ES 1SS133
IC300
1
3
2
IC300
HC00
13
IC300 11
4
12
6 HC00
5
HC00
VCC
IC300
9
8
10
HC00
Sep, 1998
25 26 27 28
4
JK300
2
YKF51-5054
FL303
SBT-0260
FL304
C301
SBT-0260
0.1
VCC
R303
R302 10K
220
IC301
2 A VCC 8
6
O
3 C 5
1 GND
NC1
4 VE 7
NC2
PC910X
VCC
IC300
14
VCC
C302
0.1
GND
7