Table of Contents
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Oct.2001
CIRCUIT DIAGRAM (MAIN BOARD ASSY/DIGITAL 1)
fig.digital1
FOOT SW
JK5
LGR4609-7100
JK6
YKF51-5048
OUT
IN
5
4
5
4
2
2
L42
N2012Z601T02
C301
D
0.01
C302
D
R93
R94
0.01
100
120
D
R98
10k
+
D 3. 3
1SS302
+
D 3. 3
C123
10/16
C177
CN5
0.1
14
14
13
D
13
12
12
11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
C124
3
3
2
C180
2
1
0.1
1
10/16
14FE-BT-VK-N
+ 5
D
D
L52
N2012Z601T02
ENC&VOL&LED
36
+
D 3. 3
DA1
1SS302
3
+
D 3. 3
D
L16
R90
N2012Z601T02
1k
2
4
3
C300
C108
1
0.1
0.1
L47
N2012Z601T02
D
D
D
30
40
MIDI
50
60
IN/OUT
D
+
D 3. 3
+
D 3. 3
C109
L63
0.1
N2012Z601T02
C110
0.1
R91
IC28
D
560
PC400
1
4
D6
3
5
MA111
D
+
D 3. 3
C168
0.01
ML_SEL
N2012Z601T02
L31
D
1
3
4
DA4
2
IC32
TC7S32F
D
D
L37 N2012Z601T02
+ 5
D
EXBV8V103JV
RA13
+ 5
D
R106
R107
10k
10k
1
1
8
3
TC74VHCT08F
2
7
2
3
6
IC25B
4
5
TC74VHCT08F
4
RA16
6
EXBV8V470JV
5
IC25C
TC74VHCT08F
9
8
10
+ 5
D
C143
0.1
IC25E
TC74VHCT08F
D
IC25D TC74VHCT08F
12
11
13
D
CN6
CPU
FLASH
DATA
N.I.U
(SJ20-07WX)
R89
10k
L67
N2012Z601T02
IC54C
TC7W14F
6
2
+
D 3. 3
D
C206
IC54D
0.1
TC7W14F
ENCODER
D
+
D 3. 3
R95
100k
ENC_A
IC54A
TC7W14F
R92
1
7
470k
C111
4700p
+
D 3. 3
D
R100
100k
IC54B
ENC_B
TC7W14F
R99
3
5
470k
C117
4700p
D
INPUT_SEL
+
D 3. 3
R161
10k
R118
IC25A
1k
R127
R126
1k
1k
+
D 3. 3
C125
N.I.U
C126
C127
N.I.U
N.I.U
R16
D
22
RESET
+
D 3. 3
L8
N2012Z601T02
10k
+
D 3. 3
+
D 3. 3
7
L30
7
N2012Z601T02
6
6
5
5
IC42
4
CPU-FLASH-1
4
3
CPU-FLASH-2
S-80927ALMP-DAQ-T2
3
2
2
1
CPU-FLASH-3
2
VCC
OUT
1
1
C144
4
NC
0.1
3
5
GND
CD
D
C148
D
0.1
D
SW-8
SW-7
SW-6
SW-5
SW-10
SW-9
SW-2
SW-1
RA5
EXBA10E103J
D
SW-3
SW-4
SW-11
SW-12
SW-13
SW-14
SW-15
SW-16
+
+
D 3. 3
D 3. 3
L73 N2012Z601T02
C172
+
D 3. 3
C176
C112 47/6.3(OS)
C178
C113
0.1
C114
C115
0.1
C116
D
1
DMARQ3/INTP103/P07
GA-DMA-REQ2
2
DMARQ2/INTP102/P06
D15/P57
3
GA-DMA-REQ1
DMARQ1/INTP101/P05
D14/P56
GA-DMA-REQ0
4
DMARQ0/INTP100/P04
D13/P55
5
P03/TI10
D12/P54
FOOT-SW
6
P02/TCLR10
D11/P53
7
P01/TO101
D10/P52
8
C-SMUTE
P00/TO100
D9/P51
D8/P50
10
LCD_RESET#
DMAAK3/INTP113/P17
D7/P47
GA-DMA-ACK2
11
DMAAK2/INTP112/P16
D6/P46
12
GA-DMA-ACK1
DMAAK1/INTP111/P15
D5/P45
GA-DMA-ACK0
13
DMAAK0/INTP110/P14
D4/P44
14
SW-1
P13/TI11
D3/P43
SW-2
15
P12/TCLR11
D2/P42
SW-3
16
P11/TO111
D1/P41
SW-4
17
P10/TO110
D0/P40
18
SW-5
TC3/INTP123/P107
A23/P67
SW-6
19
TC2/INTP122/P106
A22/P66
20
SW-7
TC1/INTP121/P105
A21/P65
SW-8
21
TC0/INTP120/P104
A20/P64
SW-9
22
P103/TI12
A19/P63
SW-10
23
P102/TCLR12
A18/P62
SW-11
24
P101/TO121
A17/P61
SW-12
25
P100/TO120
A16/P60
A15/PB7
SW-13
26
ANI7/P77
A14/PB6
SW-14
27
ANI6/P76
A13/PB5
SW-15
28
ANI5/P75
A12/PB4
SW-16
29
ANI4/P74
A11/PB3
30
ANI3/P73
A10/PB2
VOL1
31
ANI2/P72
A9/PB1
VOL2
32
ANI1/P71
A8/PB0
VOL3
33
ANI0/P70
A7/PA7
A6/PA6
CPU
A5/PA5
C128
A4/PA4
220/6.3
34
AVDD
A3/PA3
36
AVREF
A2/PA2
C129
A1/PA1
0.1
A0/PA0
35
AVSS
CS7/RAS7/P87
D
CS6/RAS6/P86
CS5/RAS5/P85
MIDI-MUTE
44
P27/SCK1
RAS4/CS4P84
43
MIDI_IN
P26/RXD1/SI1
CS3/RAS3/P83
MIDI_OUT
42
P25/TXD1/SO1
CS2/RAS2/P82
41
P24/SCK0
CS1/RAS1/P81
40
RXD0/SI0/P23
CS0/RAS0/P80
39
TXD0/SO0/P23
38
P21
P97/HLDRQ
37
P20/NMI
P96/HLDAK
D
P95/OE
46
INTP133/SCK2/P37
P94/BCYST
47
INTP132/SI2/P36
WE/P93
48
INTP131/SO2/P35
RD/P92
D-IN-XSTR
49
P34/INTP130
UCAS/UWR/P91
GD-RESET
50
P33/TI13
LCAS/LWR/P90
SM_CS
51
P32/TCLR13
52
NF_WP
P31/TO131
CLKOUT/PX7
53
P30/TO130
WAIT/PX6
PX5/REFRQ
54
P117/INTP143/SCK3
55
P116/INTP142/SI3
P127/INTP153/ADTRG
56
P115/INTP141/SO3
P126/INTP152
57
P114/INTP140
P125/INTP151
D-IN-VF
58
P113/TI14
P124/INTP150
D-IN-F2
59
P112/TCLR14
P123/TI15
60
D-IN-F1
P111/TO141
P122/TCLR15
D-IN-F0
61
P110/TO140
P121/TO151
P120/TO150
D-IN-XSTR
66
CKSEL
R114
67
MODE0
CVDD
10k
68
MODE1
X2
69
MODE2
X1
70
MODE3
CVSS
71
RESET
R116
+
D 3. 3
R164
D
D
D
10k
CPU-MUTE
+
D 3. 3
RESET
R166
2
4
L33 N2012Z601T02
10k
IC34
C147
TC7S04F
0.1
D
RESET
D
D
+
C107
D 3. 3
0.1
IC27
TC74VHC245F
11
9
RA3 1
8
B8
A8
12
8
2
7
B7
A7
13
7
3
6
B6
A6
14
6
4
5
B5
A5
15
5
RA4 1
8
B4
A4
16
4
2
7
B3
A3
17
3
3
6
B2
A2
18
2
4
5
B1
A1
19
G
1
DIR
D
0.001
100p
100p
0.1
0.1
D
IC33
V850E/MS1
RA6
EXBV8V101JV
127
8
1
D15
128
7
2
D14
129
6
3
D13
130
5
4
D12
RA8
131
8
1
EXBV8V101JV
D11
132
7
2
D10
133
6
3
D9
134
5
4
D8
136
RA9
8
1
EXBV8V101JV
D7
137
7
2
D6
138
6
3
D5
139
5
4
D4
140
8
1
D3
141
7
2
D2
142
RA11
6
3
D1
143
5
4
D0
EXBV8V101JV
101
102
103
104
105
RA14
8
1
A19
EXBV8V101JV
106
7
2
A18
107
6
3
A17
108
5
4
A16
109
RA15
8
1
EXBV8V101JV
A15
110
7
2
A14
111
6
3
A13
112
5
4
A12
RA17
EXBV8V101JV
113
8
1
A11
114
7
2
A10
115
6
3
A9
116
5
4
A8
RA18
EXBV8V101JV
118
8
1
A7
119
7
2
A6
120
6
3
A5
121
5
4
A4
122
RA19
8
1
A3
EXBV8V101JV
123
7
2
A2
124
6
3
A1
125
5
4
A0
92
flash_vpp0
93
CS6
R146
100
94
R138
100
CS5
95
flash_vpp1
96
8
1
97
7
2
CS2
98
6
3
CS1
99
5
4
CS0
RA22
EXBV8V101JV
84
FLASH-WP8
85
R147
100
NF_CS
86
DIN-POW-ON
87
D-IN-ERR
88
CPU-WE
R74
100
CPU-RD
89
R47
100
90
R43
100
CPU-UCAS
91
CPU-LCAS(LWR)
R78
100
80
R170
220
CLOCK-OUT
81
R148
100
CPU-WAIT
82
DSP_SYI
72
CPU-INT
73
74
C-PD
75
76
D-IN-CL
77
D-IN-CE
78
D-IN-DI
79
R115
100
D-IN-DO
+
D 3. 3
62
63
C134
10p
64
65
X2
C135
AT-49 6.4MHz
0.1
C136
10p
+
D 3. 3
C137
D
+
D 3. 3
0.1
R165
10k
1
IC40
D
A-MUT E
4
H: Mute
2
TC7S32F
ANALOG SIDE
A-MUTE
H : Mute
D
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