Table of Contents
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July 2013
CIRCUIT DIAGRAM (POWER AMP B. 2/4)
C71
10u
C81
100nF
C80
100nF
C74
100nF
C76
100nF
D
D+3V3
R63
10K
NIU
x2KBD
R53
R53
D+3V3
10K
10K
R69
D
10K
NIU
D+3V3
R72
R72
0
0
TXMIDI
IC28A
R71
R71
0
0
TC7W U04FU
IC28B
x2KBD
R94
1M
TC7W U04FU
D
R77
1
7
3
5
100
C160
D
100pF
X2
D
10
C161
R
R
8
8
9
9
0
0
27pF
27pF
R
R
8
8
7
7
0
0
R
R
9
9
0
0
NIU
NIU
0
0
R
R
8
8
8
8
0
0
R
R
9
9
3
3
0
0
D
D
R
R
8
8
6
6
NIU
NIU
0
0
R
R
9
9
2
2
0
0
D+3V3
1uF
1uF
D
C10
C10
R91
D
100
1
5
R16
DS
VDD
C159
2
4K7
VSS
3
4
1nF
D
NC
OUT
IC3
S-80130ANMC-JCP-T2G
D
D+3V3
C163 100nF
D
IC28D
IC28C
TC7W U04FU
TC7W U04FU
6
2
+5VD
D
L5
EXCML16A270U
CN67
C29
B15B-PH-K-S
1
2
N1608Z102T01
3
L39
L39
D+3V3EN
D+3V3EN
4
TO
5
6
JACK B.
7
8
D
9
(CN2)
10
N1608Z102T01
L40
L40
KSM1TX
11
KSM2TX
12
13
N1608Z102T01
14
L32
L32
N1608Z102T01
15
L36
L36
NIU
NIU
C234
100pF
74
C158
+5VD
100nF
D+3V3
D+3V3
D
1
C70
C70
4
100nF
100nF
TXMIDI
2
IC26
TC7SET08FU
D
D+3V3
C77
100nF
D
R66
10K
IC9
IC9
R64
100
TXMIDI
79
74
A1
TXD
D+3V3
99
59
MK17
MK17
5
4
D15
SC17
RA9D
BR17
BR17
98
58
6
3
D14
PR17
RA9C
MK16
MK16
97
57
7
2
D13
SC16
RA9B
BR16
BR16
96
56
8
1
D12
PR16
MK15
MK15
RA9A
95
55
5
4
D11
SC15
RA8D
94
54
BR15
BR15
6
3
D10
PR15
RA8C
93
53
MK14
MK14
7
2
D9
SC14
RA8B
BR14
BR14
92
52
8
1
D8
PR14
RA8A
MK13
MK13
90
41
5
4
D7
SC13
RA7D
BR13
BR13
89
40
6
3
D6
PR13
MK12
MK12
RA7C
88
39
7
2
D5
SC12
RA7B
87
38
BR12
BR12
8
1
D4
PR12
RA7A
86
37
MK11
MK11
5
4
D3
SC11
RA6D
BR11
BR11
85
36
6
3
D2
PR11
10K
RA6C
MK10
MK10
84
35
7
2
D1
SC10
RA6B
BR10
BR10
83
34
8
1
D0
PR10
MK9
MK9
RA6A
33
5
4
SC9
RA5D
32
BR9
BR9
6
3
PR9
RA5C
81
31
MK8
MK8
7
2
RD
SC8
RA5B
10K
78
30
BR8
BR8
8
1
CS
PR8
RA5A
MK7
MK7
80
29
5
4
INT
SC7
RA4D
BR7
BR7
28
6
3
PR7
MK6
MK6
10K
RA4C
16
7
2
SC6
RA4B
73
15
BR6
BR6
8
1
TXEN
PR6
RA4A
72
14
MK5
MK5
5
4
SMOD
SC5
RA3D
71
13
BR5
BR5
6
3
POLA
PR5
RA3C
MK4
MK4
27
12
7
2
MASK
SC4
RA3B
BR4
BR4
2
11
8
1
2KBD
PR4
MK3
MK3
RA3A
10
5
4
SC3
BR3
BR3
RA2D
9
6
3
PR3
RA2C
61
8
MK2
MK2
7
2
CLKIN
SC2
10K
RA2B
7
BR2
BR2
8
1
PR2
RA2A
MK1
MK1
6
5
4
SC1
RA1D
BR1
BR1
5
6
3
PR1
MK0
MK0
RA1C
4
7
2
SC0
BR0
BR0
RA1B
3
8
1
PR0
RA1A
T15
49
T15
T14
70
48
CN18
CKCT6
T14
T13
69
47
CKCT5
T13
T12
MK4
68
46
1
20
CKCT4
T12
67
45
T11
BR4
2
19
CKCT3
T11
66
44
T10
MK5
3
18
CKCT2
T10
T9
BR5
65
43
4
17
CKCT1
T9
T8
MK6
64
42
5
16
CKCT0
T8
T7
BR6
24
6
15
T7
T6
TP68
TP68
MK7
23
7
14
T6
77
22
T5
TP67
TP67
BR7
8
13
RST
T5
21
T4
TP71
TP71
MK8
9
12
T4
T3
TP73
TP73
BR8
20
10
11
T3
T2
19
T2
T1
62
18
9-188275-0
TEST0
T1
T0
17
T0
To Keyboard
S1L50282F32H200(ksm)
41 Keys
(CN1)
D
C170
+5VD
100nF
D
1
KSM2TX
4
D+3V3
KSM2TX_1
2
100nF
IC29
TC7SET08FU
L6
D
D
EXCML16A270U
C102
100uF
C30
100nF
D+3V3EN
D
100pF
NIU
D
C241
D
VMUTEEN
VMUTEEN
L37
C242
NIU
NIU
100pF
KSM2TX_1
SCL_DAC
D
R266
100
SDA_DAC
MasterSW
NIU
NIU
NIU
NIU
C232
NIU
NIU
100pF
C233
C230
100pF
100pF
C235
100pF
D
D
D
R65
100
KSM1TX
C65
1nF
D
CN79
24FMN-BTK-A (LF)(SN)
TP22
BR10
24
23
TP23
MK10
S1
22
TP24
BR11
21
MPXV7007DP
TP25
MK11
20
TP26
BR12
19
10K
TP27
MK12
18
TP28
BR13
17
TP29
MK13
16
TP30
BR14
15
10K
TP31
MK14
14
TP32
BR15
13
TP33
MK15
12
TP34
BR16
11
10K
TP35
MK16
10
TP36
T8
9
TP37
T9
8
TP38
T10
7
TP39
T11
6
TP40
T12
5
NIU
TP41
T13
4
TP42
T14
3
2
TP43
T15
1
10K
CN80
24FMN-BTK-A (LF)(SN)
TP44
BR0
24
10K
23
TP45
MK0
22
TP46
BR1
21
TP47
MK1
20
TP48
BR2
19
TP49
MK2
18
T0
TP50
BR3
17
T1
TP51
MK3
16
T2
TP52
BR4
15
T3
TP53
MK4
14
T4
TP54
BR5
13
T5
TP55
MK5
12
T6
TP56
BR6
11
T7
TP57
MK6
10
MK9
TP58
T0
9
BR9
TP59
T1
8
TP60
T2
7
TP74
TP61
T3
6
TP75
TP62
T4
5
TP63
T5
4
NIU
TP64
T6
3
2
TP66
T7
1
MK17
BR17
R372
100
T0
R403
100
T1
R447
100
R448
100
T2
CN81
+5VD
53253-0670
1
TO
2
L38
MASTER SWITCH B.
3
EXCML16A270U
4
C106
Signal from
(CN1)
5
CPU side
100nF
6
CN8
TXD1
1
RXD1
2
DGND
3
C123
+5VD
4
NIU
B4B-PH-K-S
D
D
TO BELLOWS B.
MOTOR B.
CN36
(CN3)
53014-0410
1
TO
2
AFTER-TOUCH B.
3
4
(CN1)
5VREF
+5VD
R102
0
0
NIU
5VREF
5VREF
5VREF
C54
TP21
IC6C
100nF
OP296GS
-
-
+
+
R E F
1
7mA @ 5Vdc
2
3
4
R E F
R E F
6
-
-
R47
R47
0
0
7
R100
0
Vtar
5
+
+
IC6B
OP296GS
R96
10K
C85
100nF
C82
10u
R455 0 ohm
R E F
D
R E F
5VREF
EXCML16A270U
L34
C164
100nF
C166
R103
100nF
10K
R E F
R E F
SCL_DAC
SDA_DAC
R104100
CN78
1
TO
2
CHINS WITCHES B.
3
4
(CN1)
5
53253-0510
D
5VREF1
C108
5VREF1
C107
100nF
100nF
REF1
REF1
1
AFT/MST_1
R268
R268
100
100
AFT/MST
TO JACK B.
2
3
(CN13)
MasterSw
C236
4
R267
100pF
100K
NIU
NIU
NIU
CN69
REF1
REF1
53253-0470
12VREF
C124
D
100nF
REF1
REF1
12VREF
C109
C109
100nF
100nF
REF1
AFT/MST_1
REF1
FR-8X/XD
1SS355
D15
D15
IC7
+Vcc
TA7805F(TE16L,Q)
R44
33
2
1
VO
VI
C58
C58
C61
10u
10u
10u
R E F
L35
N1608Z102T01
SensOut
PRS_SNS
PRS_SNS
C87
100pF
OP296GS
IC6A
R E F
3
1
2
Low Power 60uA x Amp
R98
39K
R97
100
SensOut
R73
NIU
C83
10u
C84
1uF
R E F
C167
100nF
R E F
R101
10K
6
A0
Vtar
5
1
SCL
VOUT
4
SDA
R105 100
IC27
R E F
DAC6571IDBV
R E F
75
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