Circuit Diagram (Audio Pcb Assy) - Roland Va-7 Service Notes

IC2 IC3
VCC VCC
AN78L05M TA7805F
3 1 DAD+5V 1 3 DA+5V
IN OUT IN OUT
C7 C8 C9 C10 C11 C12
10uF16 0.1 0.1 10uF16 0.1 0.1
A A
C13
NIU
R5 R6
0s NIU
DA+5V
C14 C17
10uF16 10uF16
C15 C16
0.1 0.1
D A
IC4
AK4522VF
VDA 12 4
SDTI AINL+
CN3 VAD
13
SDTO
53014_0810 VLRCK 10 5
LRCK AINL-
VBCK 11
SCLK
VAD 1 2 C19
AINR+
2 9 0.1
VDA CDDIF1
DIF1
3 CDDIF0 8 3
DIF0 AINR-
VLRCK 4
5 R14 R15 14 1 C20
SMUTE VREFH
VBCK 6 0s NIU 24 4.7uF16s
VCOM
7 16
DEM1
VMCK 8 15 22
DEM0 AOUTL
R19 R20
NIU 0s
17 23
MCLKI AOUTR
21
D
CMODE
20 XPD
PD
From CN7 on MAIN B.
VMCK
C28
0.1
C26 C27
0.1 10uF16
C33
CODEC D A
0.1
VARIDA : 20bit serial (LSB justified)
VARIAD : 20bit serial (MSB or LSB justified)
VARILRCK(=fs) : 44.1kHz
R47
VARIBCK : 64fs
4.7ks
VARIMCK : 256fs
DA+5V
R48
XPD 4.7ks
C44
NIU
R52
0s R54
NIU
C47 C50
10uF16 10uF16
CN5
C48 C49
53014_1410
0.1 0.1 R59
D A
OUTP1 1 3.9Ks
IC11
256Fs 2
AK4324
3
SDDA1 4
BCKC 5 R65 R66
R64
6 0s NIU 12
DEM1
C57
7 11 24
DEM0 DZFL 3.9Ks
DGND 8 DADIF2 15 NIU
DIF2
9 R72 R73 14 19
DIF1 AOUTL+
10 NIU 0s DADIF0 13
DIF0
DGND 11 18
AOUTL-
DGND 12 XPSD 7
SDATA
13 XPLRCK 8 17
LRCK AOUTR+
14 XPBCK 6
BICK
16
AOUTR-
XPD 5
PD
9 23 R77
D
SMUTE DZFR
10 3.9Ks
DFS
From CN8 on MAIN B. XPMCK 4 21
MCLK VREF
3
CKS
C65 R81
0.1 3.9Ks C66
NIU
C67
D A
0.1
DAC
XPSD : 24 or 20 bit serial (LSB justified)
XPLRCK(=fs) : 32kHz
XPBCK : 64fs
XPMCK : 256fs
Vss Vdd
-VCC VCC R116
33I
R117
33I
C114 C115
220uF25 220uF25
A
ADC INPUT NORMAL LEVEL: -15.3dBm
(-37dBm in JACK with max volume)
ADC INPUT MAXIMUM LEVEL: +2.7dBm
(-7.8dBm in JACK with max volume)
JK6 L13
5
SBT0160W
4
MIC/LINE IN 2 4 1
3
7 3 2
8
1
YKB21_5006
DA1
RB706F_40
1 2
R7
A R8 100Ks
470s C18
22uF16
R9
100Ks
A
C22
C21
2.2nFs NIU
R16
A L11
JK4 SBT0160W
8.2Ks
C25 R24
2 100uF16 100Ks 2 4
-
1 L/M 3
R18
3 1 3
+
3.9Ks
IC7A
HLJ052001110
NJM5532MD
Reverse Amp
INPUT
A L12
JK5 SBT0160W
C32
NIU
2 4
R 3
1 3
R31
8.2Ks HLJ052001110
C37 R41
6 100uF16 100Ks
-
7
R37
5
+
3.9Ks
IC7B
NJM5532MD
Reverse Amp
A
C43
0.1
A
C42
10uF16
C45
NIU
C51
NIU
R58 R55
8.2Ks 8.2Ks
R57 C53
IC12A
1200p
12Ks
C55 R63 2
-
2 100uF16 8.2Ks 1
-
1 3
+
3 R60 R61
+
R69 8.2Ks 8.2Ks
UPC4570G
IC10A
100Ks A
NJM5532MD
R68
12Ks
A
C59
A A A
Reverse Amp
NIU
C60
NIU
R76 R74
8.2Ks 8.2Ks
R75 C61
IC12B
12Ks
C63 R80 6 1200p
-
6 100uF16 8.2Ks 7
-
7 5
+
5 R78 R79
+
R85 8.2Ks 8.2Ks
UPC4570G
IC10B
100Ks A
NJM5532MD
R84
12Ks
A
A A A
Reverse Amp
CN9
5045_09A
1 VCC+
2 MUTE
3 VCC-
4 VCC+
5 +5V To CN9 on MAIN B.
6 +5V
7 AN.GND
8 DIG.GND
9 DIG.GND
CN10
5045_07A -VCC 5VD
VCC
-12V 1
AGND 2
+5V 3
+5V 4
DGND 5
DGND 6
+12V 7
From CN5 on POW.AMP. B. C74
C75 100uF25 C76
100uF25 100uF16
L14 L9
EXCCL4532U1
D A EXCCL4532U1 D
NIU NIU L10
EXCCL4532U1
D4 VCC
R104 DA204K
3
100s R103 R123
Q3
100Ks
2SK363GR 1Ms 1
2 2 3
C29
SW1A C31
33pFs R105
SSSF112
100pFs -VCC
SSSF11209K
C30
1Ms 0.1
R106 R107
A
C35 R108 R109
10uF16
10uF16
R110 A 8.2Ks 18Ks
C39 3.3Ks 2 100Ks C38 22uF16
47uF35 -
100s 1 6
A
47uF35 -
3 7
+
5
+
22uF16
R111 R112 IC8A 5 2 R113
UPC4570G IC8B
39Ks 39Ks UPC4570G
4.7Ks
VR1
LINE:+0.3dB A +10dB
RK09K12A0A2AA
A A A A
MIC:+29.9dB 10kBx2
C40 A
680pFs
C100
150pFS
CERAM.
R89
C101 22Ks
220nF
C102
2 10uF16BP
1 1
R90 3
-
R91 22Ks
2
1Ms IC15A
A
BA5218FP
A C103
150pFS
A CERAM.
C104
220nF R93
22Ks
1
C105
2
10uF16BP
R92 6
R94 22Ks 7
1Ms 5
A
-
A A IC15B
BA5218FP
R96
IC14A C54 R114 Vdd 6.8Ks
2 100uF16 100Ks
-
1 L3 R97
3 BLM21A601SPT 6.8Ks
+
CN11
NJM5532MD
53014_0910
C56 C117
560p CN12 10uF16BP
1
2
A 53014_0410
SENDL 3
4 4 RETL
L5 5 3
BLM21A601SPT SENDR 6 2
A
7 1 RETR
8
9
IC14B C62 R115
6 100uF16 100Ks
- To CN4
7 A
5 on POTENT. B.
+ L6
C118
From CN5
BLM21A601SPT 10uF16BP R99
NJM5532MD
on POTENT. B. 6.8Ks
C64 Vss
560p R100
A
6.8Ks
Vdd Vdd Vdd Vdd
C84 C85 C86 C87
0.1 0.1 0.1 0.1
- - - -
IC12C
+ + + +
IC7C IC10C IC14C
A A A UPC4570G A
NJM5532MD NJM5532MD NJM5532MD
C96 C97 C98 C99
0.1 0.1 0.1 0.1
Vss Vss Vss Vss
VCC
R118 CN13
3.9Ks
53014_0310
1
2 To CN4 on CONTR. VARIPH. B.
3
(Peak Signal Led)
Q6
2SC2412
R119
3
2 Q7
1 2SC2412
8.2Ks
3
R120 2
15Ks 1
C116
A
1uF25
A A
5VD
R122
TP2
TP
OV=MUTE ON R12 NIU
+5V=MUTE OFF
390s 1 5
VCC RES
2
MUTE NC
3 4
GND CAP
R17 IC5
D1 C23
M51953BL
DAN202K 10Ks NIU
367997064
3
VCC
EXT OUT FAST MUTE AT POWER OFF
R27
R26 R28
10Ks
22Ks 220s R30
22Ks
3 C34
2 Q4 100pFS
2SC2412
1
R38
C36
R36 R39
100uF16
10Ks
10Ks 39Ks
6
R46
R
5
-
A
100Ks C41 100pFS
R49
R50
39Ks
10Ks
2
R53
L
C108 3
-
33pFS
CERAM. A
VCC 100Ks
R56
1
4.7ks
2 Q5
BC560B
3
R95
6.8Ks
C109
L1 R62
10uF16BP 180
2 R67
1 1/4W
A
3 1Ks
- R70 R71
IC16A
BA5218FP
A
R98
0s 680s C58
NIU
100Ks
A COIL=720Ohm A
RL1 D3 1N4002
DS2YSDC12V
R82
R1
R83
C112 0s
33pFS
CERAM.
C113
R86 680s C68
10uF16BP
NIU
1Ks
A A
R101
R102
6 6.8Ks
7
100Ks
5
-
IC16B
BA5218FP
A
A
C91 C92 C93 C94
0.1 0.1 0.1 0.1
Vdd
A D A D A D A D
C77 C111
0.1 0.1
SW1B
- SSSF112
IC8C
+
UPC4570G 10 20 C110
A A
0.1
C80
0.1
A
Vss
FIXING
C169 0.1
C69 0.1 C70 0.1
TP5
C71 0.1 C72 0.1 TP4
TP
TP
C73 0.1
TP7
TP6
TP
TP
A A A
TP1
R11
5VD
1Ks
MUTES
5VD
Q1
1 5 2SC2412
VCC RES
2
TP3
NC R13
3 4
GND CAP
47Ks R22
IC6 3 R21
100Ks
2
M51953BL 100Ks
C24 1
367997064
4.7uF16 3
2
Q2 1
2SC2412
POWER AMP DELAYED MUTE AT POWER ON
R121
CERAM. NIU
CN4
R42
10I 5045_06A
7
1 MUTES
IC9B 2 MUTER
BA5218FP 3 PHL
TO PHONES
4 PHR
CERAM.
5 GND
6 GND
R51
A
10I
1
IC9A
BA5218FP
L4
SBT0160W JK2
HLJ052001110
4 1 2
3
L/M
3 2 1
A
Zout:680
OUTPUT
L7
SBT0160W JK3
HLJ052001110
4 1 2
3
R
3 2 1
A
CN8
5045_05A
R87
1 MUTER
560s 2 AGND
3 LOUT
4 AGND
5 ROUT
R88
A
To CN2 on POW. AMP. B.
560s
Vdd Vdd Vdd
C46 C106
0.1 0.1
- - -
IC16C C52 IC9C C107 IC15C
A A
BA5218FP 0.1 BA5218FP 0.1 BA5218FP
Vss Vss Vss