Circuit Diagram (Da Board) - Roland DS-90A Service Notes

DS-90/90A

CIRCUIT DIAGRAM (DA BOARD)

+ 5
D
Optical IN
JK3
TORX178A
1
IC1A IC1D
TC74HCU04AP TC74HCU04AP
1 2 9 8
C49 C1
R54
0.1 100/35
220
D
Tighten a screw with TORX178A
1
FGN D D
R2
47k
C2
JK2B IC1E
0.1
YKC21-3044
22 13 12 11
21 IC1F TC74HCU04AP
R1 TC74HCU04AP
75 R3
2.2k
D D
D
Coaxial IN
IC8A
1
TC74HCU04AP
IC8B
3
TC74HCU04AP
5 6 9
IC8C IC8D
TC74HCU04AP
TC74HCU04AP
Coaxial Through
JK2A
YKC21-3044
12
11
+ 5
D
TC74HCU04AP
IC1G
TER1
C12
JH-8M3
0.1
D D
JK2C
SW3C
SW2C
YKC21-3044
SSSF123800 SSSF120500
A B
A D D
8
+ 5
D
+ 5
D
IC2
22
VA+ VD+
C5
0.1
21
C10
SW2B
AGND DGND
C34
100/35
SSSF120500
21 0.01
D
23 22 9
RXP SDATA
10
RXN SCK
FSYNC
C3 20
FILT
0.01 19
MCK C
16
SEL U
13
100
R4 CS12/FCK V
R55 6
1k
C0/E0 CBL
220 5
CA/E1 ERF
4
C4 CB/E2 M0
3
0.047
CC/F0 M1
2
CD/F1 M2
10p
27
CE/F2 M3
CS8412-CP
D D D D
4 3
IC1B TC74HCU04AP
10
+ 5
D
C8
0.1
D
IC4
QH-
QH
QG
14
SI QF
R56
QE
10k 10
SCLR QD
13
G QC
11
SCK QB
12
RCK QA
D
2 TC74HC595AP
D
C44
0.01
4 BL02RN2-R62
R50
L1
75
1 6
2
8 3 4
C45
FL1
C46
47/16 BP
PT-10
0.1
D D D
+ 5
D
C47
0.1 Lch
IC8G
TC74HCU04AP
D
Rch
for DS-90
+ 5
D
R29
D1 R30 C26
10 1/2W
1SS133 470 0.1 C27
C25
100/35
+ 5
D
C29
D
0.1
7
C6
0.1 D IC7
8
C31
100/35
12
D
DEM1
26 11 24
DEM0 DZFL
12 15
DIF2
11 14 19
DIF1 AOUTL+
13
DIF0
1 18
AOUTL-
14 7
SDATA
28 8 17
LRCK AOUTR+
15 6
BICK
25 16
AOUTR-
23 5
PD
24 9 23
SMUTE DZFR
18 10
DFS
17 4 21
MCLK VREF
3
CKS
D
AK4324
C48
D
0.1
+ 5
D
D 0.1 A
R5
0.1
10k D A
9
0.1
D A
7
6
5
4 TO POWER AMP BOARD CN3
+ 15
3 R6
+ 5
A
2
10k
1
+ 5
D
15
D A
- 15
+ 5
D
+ 5
D
R51 R52
390 390
TC74HCU04AP
IC8E
11 10
0.1 0.1
0.1
R53
D
47k D
5 6 13 12
IC1C
IC8F
TC74HCU04AP
TC74HCU04AP
0.1
D
0.1
R23 1k
R25
2.2k
24 25
14 15 23 21
A
13 11 22
12
SW3B
SW3A
SSSF123800
SSSF123800
R26
2.2k
R27
1k
+ 5
A
C32
R31
C28
0.47
10k
100/35
0.1
C35 2
A R34
0.47
10k
3
R36
C36
15k
470p
A
R46
47k
R47
47k
3
2SC1815GR
Q4
C42 R48
0.1 47k
A A A
+ 15
C23
C38
R38
47/35
0.47
-
10k
IC6C
+
TL072CP 6
R41
C24 C40
0.47 10k
47/35
5
C41 R43
- 15
470p 15k
A
A
6 R58
6
5 47k
5
4 R59
4
3 47k
3
2 3
2
1
1
2SC1815GR
C43 R60 Q6
CN1
0.1
47k
S6B-PH-K-S
D
A A A
4 4
4 4
3 3
3 3
2 2
Wiring
2 2
LED2
1 1
1 1
2
CN2
CN2
4P-SAN
S4B-PH-K-S
LED1
2
CN3
S4B-PH-K-S
4 LED BOARD (Analog Sheet)
4
3
3
2
2
1
1
TO HEAD AMP BOARD CN6
D
Feb. 2000
C30
470p
R32
C33 R33
15k
47/16
220
-
1 Lch
+
IC6A
TL072CP
R35
47k
+ 15
A A
R45 Q3
47k 2SA1015GR
3
3 Q1
2SC2878A
R37
R49 10k
47k
- 15 A
C37
470p
R39
C39 R40
15k
47/16
220
-
7 Rch
+
IC6B
TL072CP
R42
47k
+ 15
A A
R57 Q5
47k 2SA1015GR
3
3 Q2
2SC2878A
R44
10k
R61
47k
- 15 A
POWER LED
1
Green
DIGITAL IN LED
1
Orange