Kep-126 Circuit 4/4 - Kawai ES4/es1P Service Manual

1 2 3
I P.W.B. KEP-126 Circuit 4/4
(2-2E) KBD_BUS
SC0
1
U23(7/7)
74HCT7007
A
SC1
3
5V
14 7
V+ V-
SC2
2 5
3G
5V
1
SC3
9
3G
B
SC4
11
SA0
1 2
SB0
RN2 3 4
XX SA1
5 6 13
SB1
7 8
3G
SA2 SB3
1 2
C
SB2 SB2
3 4
SA3 SB1
RN3
5 6
XX
SB3 SB0
7 8
SA3
SA2
SA1
SA0
5V
D
3.3V 2
1
3G
E
2 2 2 2 2
1 1 1 1 1
5V
(1-7E) MIN
(1-7D) MOUT
F 3.3V
(1-8F) AN3
(1-6E) PF7
(1-6E) USBI
(4-1J)
USBO
(1-6D)
(4-1J)
2 2 2
1 1 1
G
5V
2
3G
1
3
2
H
1
Q3
XX
3G
3.3V 5V
I
EM35 XX 1 2
EM36 XX
1 2
R101 EM37 XX
1 2
(1-6E) EM38 XX
1 2 1 2
USBI
(4-2F)
1 2 EM39 XX 1 2
USBO
(1-6D) EM55 XX
1 2
R102
(4-2F)
XX
2 2 1 2
J R99 EM56
XX XX
1 1
1 2 7 6
(1-2G) PA3
1 2
(1-2G) PA4
R100
XX
CN15
XX
4 5 6
U23(1/7)
74HCT7007
KC0
EM16 BK1608HS601-T
2
EM17 BK1608HS601-T
U23(2/7)
KC4
74HCT7007 R131 102R
KC1 KC3
R132 102R
4
KC2
R133 102R
U23(3/7)
KC1
74HCT7007 R134 102R
KC2 KC0
R135 102R
6
KB3
U23(4/7)
KB2
74HCT7007
KC3 KB1
8 RN7
MNR14E0ABJ101 KB0
U23(5/7)
KA3
74HCT7007
KC4 KA2
RN8
10
MNR14E0ABJ101
KA1
U23(6/7)
KA0
74HCT7007
12
5V
11 10
B8 GND
KB3 KB3
12 9 8 7
B7 A8
KB2 KB2
13 8 6 5
B6 A7 RN4
KB1 KB1
MNR14E0ABJ103
14 7 4 3
B5 A6
KB0 KB0
15 6 2 1
B4 A5
KA3 KA3
16 5 8 7
B3 A4
KA2 KA2
17 4 6 5
RN5
B2 A3
KA1 KA1
MNR14E0ABJ103
18 3 4 3
B1 A2
KA0 KA0
19 2 2 1
OE A1
5V
20 1
VCC DIR
C92
104C/25V
3G
TO_MIDI/USB
CN14
(TO KEP-099 CN1)
B9B-PH-K-S
(1-8F)
AN0
(1-2G)
CN5
SOFT
SOSTE
1 2 3 4 5 6 7 8 9
(1-2F)
1 2 1
3.3V
1 2 2
1 2 3
1 2 4
1 2 5
1 2 6
1 2 7
1 2 8
1 2 9
EM13 B601
EM14 B601
R108 102R
5V
R109 102R
EM15 B601
2
R110 222R
R111 102R 3
1
R112 222R 2
Q2
R113 102R XX
3 1
2
3 1
2
3G
1
3G
3.3V
Q4 Q1
XX XX
3G
1 2 1
CN4
2 1 2
XX
(1-6E) LCDRS
(1-6E) LCDRW
1
(1-6E) LCDE
C93 XX
2 1 2
C94 XX
3 1 2
C95 XX
4 1 2
FG
5 C96 XX 1 2
R116 222R
6 1 2
(1-2D) LDB4
R117 222R
7 1 2
(1-2D) LDB5
R118 222R
1 2
(1-2D) LDB6
R119 222R
1 2
(1-2D) LDB7
5 4 3 2 1
7 8 9 10
5V
3G C97
104C/25V CN6
1 2
1 2 1
1 2 2
1 2 3
1 2 4
1 2 5
1 2 6
1 2 7
1 2 8
3 4 9
5 6 10
7 8 11
1 2 12
3 4 13
5 6 14
7 8 15
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
CN13
B15B-PH-K-S
TO_KEYBOARD
(TO KKB-008 CN1)
3.3V
CN21
B5B-PH-K-S
3G
2 2 2
FG2
(TO KEP-193 CN9)
2 2 2 2
1 1 1
CN8
R138 102R
1 1 1 1 1 2 3 4 5
1 2 1
EM19 B601
1 2 2
R139 102R
1 2 3
R140 102R
1 2 4
1 2 5
EM20 B601
2 2
1 1
3G
5V
CN20
2
2
1
1
2 2
R125
2 1
1 1
1 2 3 4 5 6 7 8 9 10 111213 141516
1
2
3
R121 102R
1 2 4
1 2 R122 102R 5
1 2 R123 102R 6
7
8
9
10
11
12
13
14
15
R127 0R0R
1 2 16
R128 XX
1 2 2 4 6 8
R129 XX
1 2
RN6
R130 XX
1 2
3G
1 3 5 7
MNR14E0ABJ103
– 21 –
11 12 13 14
U25(1/7)
74HCT7007
1 2
(1-7E) PNLCK
U25(2/7)
74HCT7007
3 4
(1-4H) PNLG
U25(3/7)
74HCT7007 R159
XX
5 6
(1-4H) PNLRCK
U25(4/7)
74HCT7007
9 8
(1-4H) PNLS/L
U25(5/7)
74HCT7007
(1-8F) PNLIN
11 10
(1-9F) PNLOUT
(4-14I)
(4-12I)
U25(6/7) 3.3V
74HCT7007
(1-8F) AN1
13 12
(1-8F) AN2
5V
3G
U25(7/7)
74HCT7007
14 7
V+ V-
2
1
3G
3G
U27
3.3V
UPC2933AHF
3 OUT IN 1
1 2 GND 1 2
2
2 1 1
3.3V 3.3V
C105 C106
104C/25V 104C/25V
3G
1 1
C103
100UF/6.3V 100UF/6.3V
2 2
3G 3G
3.3V
U26
XX
2
(2-2H)
1 20
DIR VCC
(3-1G) 1
SCK
2 19
A1 OE
(2-2I) DWO2
3 18
A2 B1
CN7
4 17
A3 B2
(2-2H) WCK 5 16
A4 B3
DWI5
(2-2I)
6 15
LRCK A5 B4
(3-2G)
7 14
PNLOUT A6 B5
(1-9F)
(4-12B) 8 13
A7 B6
RST3
9 12
A8 B7
PNLIN
(1-2I) 10 11
GND B8
(1-9H)
(1-8F)
(1-8C)
(4-14B)
(2-1D)
(2-13I)
(2-16D)
(2-13F)
3G 3G
15 16 17
3.3V EM33 B601
1 2
A
CN12
2
2 2 C112
5V 104C
1
R142
1
XX EM34 B601
1 2 2
1 1
EM22 B601
1 2 3
R145 102R
1 2 4
1 2 R146 102R 5
1 2 R147 102R 6
R148 102R
1 2 7
B
R149 222R
1 2 8
EM32 B601
1 2 9
R150 102R
1 2 10
1 2 11
R151 102R
2 2 2 11 10 9 8 7 6 5 4 3 2 1
R143
332R
1 1 1
C
3G
CN17
B8B-PH-K-S
TO KEP-197 CN1
D
CN19
XX
E
5V
C111
XX
1 2 3 4
1
2 2
3
4
2 1
F
CN9
XX
3G
C110
1
2 +5V
2
GND CN10
B2P-VH
1
TO KEP-192 CN5
C126
G
102C/50V
CN16
XX
3.3V
CN11
2 XX
EM23
1 2 3 4 5 6 7 8 9 10 H
1 2 1
1
2
1 2 3
EM24 XX
1 2 4
1 2 EM25 XX 5
(2-6J)
EM26 XX
1 2 6
EM27 XX
1 2 7
EM28 XX
1 2 8
EM29 XX
1 2 9
I
1 2 EM30 XX 10
EM31 XX
2 R144
3G
XX
1
J
3G