Roland GW-7 - Sound Distortion, Pitch, and Polyphony Issues

35
Mar.2005 GW-7
CIRCUIT DIAGRAM (MAIN 2/2)
fig.main2-c.eps
PHONES
R
L
IC22 uses different parts in GW-7 and GW-7C.
EXCEPT FOR CHINA : MR27V12800J-143TN03S (#03899556)
FOR CHINA : MR27V12800J-OTDTN03A (#03891701)
A3V0
A3V13
A3V12
A3V11
A3V10
A3V9
A3V8
A3V7
A3V6
A3V5
A3V4
A3V3
A3V2
A3V1
D3V0
D3V1
D3V2
D3V3
D3V7
D3V5
D3V6
D3V4
D3V8
D3V11
D3V9
D3V10
D3V15
D3V13
D3V14
D3V12
EA8
EA7
EA6
EA5
EA4
EA3
EA2
EA1
EA0
ED7
ED6
ED4
ED5
ED3
ED2
ED1
ED0
ED3
ED0
ED6
ED1
ED7
ED5
ED2
ED4
EA8
EA7
EA5
EA6
EA4
EA3
EA2
EA1
EA0
XEWE
XECAS
XERAS
XECAS
XEWE
XERAS
XWOE
XWCS
WD1
WD2
WD3
WD4
WD5
WD6
WD8
WD9
WD10
WD12
WD11
WD13
WD14
WD15
WD0
WA2
WA3
WA5
WA4
WA8
WA7
WA6
WA9
WA12
WA11
WA10
WA13
WA15
WA16
WA14
WA1
WA18
WA19
WA21
WA20
WA23
WA22
WA17
WD7
WD15
WD3
WD12
WD1
WD6
WD7
WD8
WD4
WD14
WD0
WD9
WD13
WD2
WD10
WD5
WD11
WA21
WA18
WA22
WA17
WA23
WA19
WA20
WA6
WA13
WA9
WA3
WA4
WA12
WA1
WA8
WA16
WA15
WA5
WA2
WA7
WA11
WA10
WA14
XWOE
XWCS
SDATA
LRCK
BICK
WD1
WD2
WD4
WD3
WD6
WD5
WD8
WD11
WD10
WD9
WD12
WD14
WD15
WD13
WD0
WD7
PR0
SC0
PR1
SC1
PR2
SC2
PR3
SC3
PR4
SC4
PR5
SC5
PR6
SC6
PR7
SC7
T7
T6
T5
T4
T3
T2
T0
T1
PR0
SC0
PR1
SC1
PR2
SC2
PR3
SC3
PR5
PR4
SC5
SC4
SC6
PR7
SC7
PR6
T7
T6
T4
T5
T3
T0
T2
T1
PR0
SC0
PR1
SC1
PR2
SC2
PR3
SC3
PR5
PR4
SC5
SC4
SC6
PR7
SC7
PR6
T4
T2
T0
T3
T5
T1
T6
SC1
PR7
PR2
PR4
SC2
PR3
SC5
PR0
SC7
SC0
PR1
PR6
SC6
PR5
SC4
SC3
A3V6
A3V5
A3V4
A3V3
A3V2
A3V1
D3V0
D3V1
D3V2
D3V3
D3V7
D3V5
D3V6
D3V4
D3V8
D3V11
D3V9
D3V10
D3V15
D3V13
D3V14
D3V12
A3V1
D3V0
D3V1
D3V2
D3V3
D3V7
D3V5
D3V6
D3V4
D3V8
D3V11
D3V9
D3V10
D3V15
D3V13
D3V14
D3V12
RTN-L
RTN-R
RTN-L
RTN-R
MUTE
MCLK
MUTE
MUTE
MUTE
MUTE
SEND-L
SEND-R
T7
SEND-L
RTN-L
RTN-R
SEND-R
XXPCS3V
XXPWR3V
XRD3V
XXPWAIT3V
XXPINT3V
XRST3V
XDAMUTE
XUSBCCS
XWR3V
XRD3V
XKSINT
XUSBINT
KSCLK
XRST3V
XRST3V
XRST5V
ANAMUTE
XKSCS
XRD3V
+
D3.3
D
+
D3.3
+
D3.3
D
D
D
D
D
+
D3.3
+
D3.3
+
D3.3
D
+
D3.3
A
+
D3.3
D
+
D3.3
D
D
+
D3.3
+
D3.3
D
D
+
D3.3
D
+
D3.3
D
D
D
+
D3.3
D
D
D
D
+
D3.3
D
D
+
5D
D
+
5D
+
5D
VADP
DD A
A
D
D
D
D D
A AA A
A AA A
A AA
AA A
A
A
+
+
A
+
5D
+
A8
A
A
A
-
A8
A
A
A
A
-
A8
A
+
A8
-
A8
A
+
A8
-
A8
A
-
A8
VADP
D
+
D3.3
+
5D
+
D3.3
A
A
D
D
D
A
+
5D
DA
+
A8
A
A
A
R75
47
R74
1M
R76
470
R77
100
C79 100P
IC21
TC203C180AF003(XP7)
VDD5
1
SDIB
2
BCKB
3
WCKB
4
SDOC
5
VSS
6
SDOD
7
BCKC
8
WCKC
9
OUTP1
10
VDD5
11
VDD3
12
OUTP2
13
OUTP0
14
VSS
15
SYO
16
VSS
17
SYI
18
RW
19
DS
20
CA10
21
CA9
22
CA11
23
CA8
24
CA12
25
CA7
26
CA13
27
CA6
28
CA5
29
CA4
30
CA3
31
CA2
32
VDD5
33
CA1
34
CA0
35
CD15
36
CD0
37
CD7
38
VSS
39
CD8
40
CD14
41
CD1
42
CD6
43
VDD5
44
VDD5
45
CD9
46
CD13
47
CD2
48
CD5
49
CD10
50
VSS
51
CD12
52
CD3
53
CD4
54
CD11
55
VDD3
56
WAIT
57
CS
58
RESET
59
AS
60
VSS
61
INT
62
VSS
63
CK
64
TEST
65
VDD5
66
WA23
67
WA22
68
WA20
69
WA21
70
WA19
71
VSS
72
WA18
73
WA9
74
WA8
75
WA10
76
VDD5
77
WA7
78
WA11
79
WA6
80
WA12
81
WA5
82
VSS
83
WA13
84
WA4
85
WA14
86
WA3
87
VDD5
88
VDD5
89
WA15
90
WA2
91
WA16
92
WA0
93
WA1
94
WA17
95
VSS
96
WOE1
97
WOE0
98
WD15
99
VDD3
100
WD0
101
WD7
102
WD8
103
WD14
104
VSS
105
WD1
106
WD6
107
WD9
108
WD13
109
WD2
110
WD5
111
WD10
112
WD12
113
WD3
114
WD4
115
WD11
116
VSS
117
WCS0
118
WCS1
119
WCS2
120
VDD5
121
WCS3
122
WCS4
123
WCS5
124
WCS6
125
WCS7
126
VSS
127
WREQ
128
WACK
129
ED7
130
VSS
131
VDD5
132
VDD5
133
VSS
134
ED6
135
ED5
136
ED4
137
ED3
138
ED2
139
VSS
140
ED1
141
ED0
142
EWE
143
VDD3
144
RAS
145
CAS
146
EA8
147
EA0
148
VSS
149
EA7
150
EA1
151
EA6
152
EA2
153
EA5
154
EA3
155
EA4
156
VSS
157
SDOA5
158
SDOA4
159
SDOA3
160
SDOA2
161
SDOA1
162
SDOA0
163
VSS
164
VDD5
165
SDIA5
166
SDIA4
167
SDIA3
168
SDIA2
169
SDIA1
170
VSS
171
SDIA0
172
BCKA
173
WCKA
174
SDOB
175
VDD5
176
IC29
M11L416256SA-35TG 0.20
VCC
1
I/O0
2
I/O1
3
I/O2
4
I/O3
5
VCC
6
I/O4
7
I/O5
8
I/O6
9
I/O7
10
WE
15
RAS
16
VCC
22
VSS
23
OE
29
CASH
30
CASL
31
VSS
39
VSS
44
A8
28
A7
27
A6
26
A5
25
A4
24
A3
21
A2
20
A1
19
A0
18
I/O15
43
I/O14
42
I/O13
41
I/O12
40
I/O11
38
I/O10
37
I/O9
36
I/O8
35
NC
13
NC
14
NC
17
NC
32
R94
10K
RA48
100
1 8
2 7
3 6
4 5
R82
10K
R89
100
C80
0.1
RA44
10K
1 8
2 7
3 6
4 5
RA45
10K
1 8
2 7
3 6
4 5
RA46
10K
1 8
2 7
3 6
4 5
RA47
10K
1 8
2 7
3 6
4 5
IC24
M66291GP
CORE-VCC
1
GND
2
D-
3
D+
4
VBUS
5
TRON
6
TEST
7
DACK1
8
DREQ1
9
TC1
10
INT1/SOF
11
IO-VCC
12
XOUT
13
XIN
14
GND
15
CORE-VCC
16
A1
17
A2
18
A3
19
A4
20
A5
21
A6
22
D0
23
D1
24
D2
25
D3
26
D4
27
D5
28
D6
29
D7
30
D8/P0
31
D9/P1
32
D10/P2
33
D11/P3
34
IO-VCC
35
GND
36
D12/P4
37
D13/P5
38
D14/P6
39
D15/A0
40
HWR/BYTE
41
INT0
42
RD
43
LWR
44
CS
45
RST
46
DREQ0
47
DACK0
48
C114 NIU
RA50
10K
1 8
2 7
3 6
4 5
RA52
10K
1 8
2 7
3 6
4 5
RA54
10K
1 8
2 7
3 6
4 5
RA56
10K
1 8
2 7
3 6
4 5
CN8
PS-26PE-D4T1-B1
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
RA58
100
1 8
2 7
3 6
4 5
RA49
100
1 8
2 7
3 6
4 5
RA57
100
1 8
2 7
3 6
4 5
C69
100/6.3
C89
10/16
RA51
100
1 8
2 7
3 6
4 5
RA53
100
1 8
2 7
3 6
4 5
RA55
100
1 8
2 7
3 6
4 5
R92
10K
IC28
S1L50282F32H200(KSM)
D0
83
D1
84
D2
85
D3
86
D4
87
D5
88
D6
89
D7
90
D8
92
D9
93
D10
94
D11
95
D12
96
D13
97
D14
98
D15
99
A1
79
SMOD
72
PR0
3
CKCT1
65
CKCT2
66
CKCT3
67
CKCT4
68
CKCT5
69
CKCT6
70
POLA
71
PR1
5
CLKIN
61
PR2
7
TXEN
73
2KBD
2
MASK
27
INT
80
CS
78
RD
81
PR3
9
PR4
11
PR5
13
PR6
15
PR7
28
PR8
30
CKCT0
64
PR9
32
PR10
34
PR11
36
PR12
38
TEST0
62
RST
77
PR13
40
PR14
52
PR15
54
PR16
56
PR17
58
SC0
4
SC1
6
SC2
8
SC3
10
SC4
12
SC5
14
SC6
16
SC7
29
SC8
31
SC9
33
SC10
35
SC11
37
SC12
39
SC13
41
SC14
53
SC15
55
SC16
57
SC17
59
T0
17
T1
18
T2
19
T3
20
T4
21
T5
22
T6
23
T7
24
T8
42
T9
43
T10
44
T11
45
T12
46
T13
47
T14
48
T15
49
HVDD
82
LVSS
60
HVDD
1
HVDD
26
HVDD
51
LVSS
75
VSS
100
VSS
91
TXD
74
VSS
50
VSS
25
LVDD
76
LVDD
63
C99
100P
C73
0.1
X2
CX-49G@
12.000MHz
12
R73
680
R71
1M
C76
15P
C77
15P
R100
0
R101
NIU
R103
0
R106
0
R107
NIU
R109
NIU
R111
0
R114
100
C130 100P
R67
27
R68
27
JK4
2523A-04G2T-M011
1 2 3 4
10 20
L49 27UH
L48 27UH
L50 27UH
R69
1.5K
R70
10K
C78 100P
R72
100
IC30
M51953BFP-C61J
RST
6
DLY
5
VCC
7
GND
4
NC
1
NC
2
NC
3
NC
8
R95
1K
JK7
HEC0470-01-630
2
1
3
C142
0.1
FL1
SH-202
1
2
4
3
SW2A
12
SW2B
SDKLA10200
10 20
C126
0.1
C155 NIU
C60
0.1
C105
1
C63
0.1
C157 NIU
C144
2200/16(B)
C104
1
C88
0.1
C67
0.1
CN9
B5B-PH-K-S(PB-FREE)
1
1
2
2
3
3
4
4
5
5
C68
0.1
C66
0.1
C128 NIU
C83
0.1
C148 NIU
C154 NIU
R122
NIU
C61
0.1
C64
0.1
C122 NIU
C143
0.1
C125 NIU
C137 NIU
C139 NIU
C146
1000/6.3
C72
0.1
C74
0.1
C84
0.1
C86
0.1
C87
0.1
C106
1
C75
0.1
C115 NIU
C152 NIU
C136 NIU
C123 NIU
C150 NIU
C138 NIU
C141 NIU
C85
0.1
C116 NIU
C131 NIU
C127 NIU
C121 NIU
C107
10/16
C147
0.1
C65
0.1
C117
0.1
C134 NIU
C145
0.1
C70
0.1
C149 NIU
C62
0.1
C132 NIU
C71
0.1
C109
100P
C103
100P
C108
100P
C110
100P
IC31A
KIA4559F
+
-
2
3
1
R96
39K
R97
47K
C112
NIU
C111
100/16
R102
100K
R98
680
R99
330
C113
100P
JK5
LGR4609-7000
1
2
3
4
L51
600
IC31B
KIA4559F
+
-
6
5
7
R116
39K
R117
47K
C133
NIU
C129
100/16
R120
100K
R118
680
R119
330
C135
100P
JK6
LGR4609-7000
1
2
3
4
L52
600
IC33A
KIA4559F
+
-
2
3
1
R123
8.2K
R124
47K
C156
NIU
C153
100/16
R128
100K
C158
1000P
L53
600
IC33B
KIA4559F
+
-
6
5
7
R138
8.2K
R139
47K
R143
100K
C162
100/16
C164
NIU
C165
1000P
L54
600
JK8
LGR4609-7000
1
2
3
4
R125
MCR50J@
47
R126
MCR50J@
47
R141
MCR50J@
47
R140
MCR50J@
47
R105
100K
DA6
DAN202U
1 2
3
R110
47K
Q5
KTA1504SGR
1
3 2
R115
47K
R112
10K
C166
0.1
IC33C
KIA4559F
+
-
84
D2
1SR139-@
400
1 2
R127
2.2
R129
2.2
R130
2.2
R131
2.2
R134
2.2
IC34
NJM2360AM
CS
1
ES
2
CT
3
GND
4
VIN-
5
VCC
6
IPK
7
CD
8
D3
CRS11
12
C167
150P
R132
1K
C159
1000P
R142
47K
R137
8.2K
R135
2.2
R136
2.2
C160
470/16
C168
0.1
C140
0.1
IC31C
KIA4559F
+
-
84
C151
0.1
C101
0.1
IC26C
KIA4559F
+
-
84
C102
0.1
IC32
NJM7805DL1A
IN
1
OUT
3
COM
2
R108
3.3K
R133
1K
Q4
KTC2875B
1
2 3
Q7
KTC2875B
1
2 3
Q8
KTC2875B
1
2 3
Q9
KTC2875B
1
2 3
R121
3.3K
R144
1K
X3
CX-49G@
24.576MHz
1 2
R153
0
IC35
UPC29M33T
IN
1
GND
2
OUT
3
C176
0.1
C175
10/16
C177
0.1
C178
10/16
R161
10K
R162
10K
R163
10K
IC25
KIC7SZU04FU
2 4
53
C81
12P
C82
12P
IC27
AK4324
DVSS
1
DVDD
2
CKS
3
MCLK
4
PD
5
BICK
6
SDATA
7
LRCK
8
SMUTE
9
DFS
10
DEM0
11
DEM1
12
DIF0
13
DIF1
14
DIF2
15
AOUTR-
16
AOUTR+
17
AOUTL-
18
AOUTL+
19
AVSS
20
VREF
21
AVDD
22
DZFR
23
DZFL
24
IC26A
KIA4559F
+
-
2
3
1
R80
8.2K
R83
8.2K
R81
10K
R84
10K
C93
AMZ@
820P
C91
AMZ@
220P
R79
15K
IC26B
KIA4559F
+
-
6
5
7
R87
8.2K
R90
8.2K
R88
10K
R91
10K
C97
AMZ@
820P
R86
15K
R93
15K
C100
AMZ@
270P
C94
100/16
C98
100/16
C95
AMZ@
270P
R85
15K
C96
AMZ@
220P
C183
0.1
R167
10
C90
100/6.3
C184
0.1
R78
10
R166
10
C186
0.1
C120
470/16
C190 0.1
C191 0.1
C192 0.1
C193 0.1
C194 0.1
C195 0.1
C196 0.1
C197 0.1
C198 0.1
C199 0.1
IC22
MR27V12800J-0TDTN03A
D15/A-1
46
D14
44
D13
42
D12
40
D11
35
D10
33
D9
31
D8
29
D7
45
D6
43
D5
41
D4
39
D3
34
D2
32
D1
30
D0
28
VCC
37
VCC
38
VSS
25
VSS
26
VSS
47
VSS
48
A22
36
A21
12
A20
13
OE
27
CE
24
BYTE
1
A19
11
A18
14
A17
15
A16
2
A15
3
A14
4
A13
5
A12
6
A11
7
A10
8
A9
9
A8
10
A7
16
A6
17
A5
18
A4
19
A3
20
A2
21
A1
22
A0
23
C200 0.1
C201 0.1
C202 0.1
C203 0.1
C204 0.1
C205 0.1
C206 0.1
C207 0.1
R169
10
Q6
KRC102S
1
2 3
C163
100/16
L57
EXCML20A@
39UH
C185
0.1
L55
SBCP-87@H
330UH
C161
GRM31@
10
C92
0.1
C118
220/16
R104
1K
C124
100/16
C119
0.1
Q3
KTC4374
1
32
D3V[0:15]
A3V[0:21]
D3V[0:15]
A3V[0:21]
D3V[0:15]