Table of Contents
Advertisement
1
2
PWRSENSE {4-A2}
UNMUTE {4-B2}
J601
K2501 DAC Connector
U2
DGND
2 4 6 8 10 12 14 16
7
CLK
20
15
LTRIM
CPUMUTE
19
A
13
LADJ
PWRMUTE
9
LLE
11
DACDA
10
DACDA
LDIN
9
DACDB
5
DACDB
RDIN
7
6
CH1
RLE
5
24
CH2
RADJ
3
DACLE
23
DACLE
RTRIM
1
4
DACCLK
+5VD
27
NC3
25
NC4
18
NC5
8
DGND
AD1865
U1
74HC139
2
4
DCLKA
A
Y0
C3
3
5
B
Y1
0.1uF
6
DCLKC
Y2
1
7
G
Y3
U1
Vcc
74HC139
14
12
A
Y0
B
13
11
B
Y1
10
Y2
15
9
G
Y3
U3
7
CLK
20
LTRIM
19
LADJ
9
LLE
10
LDIN
5
RDIN
6
RLE
24
RADJ
23
RTRIM
4
C
+5VD
27
NC3
25
NC4
C1
18
NC5
0.1uF
8
DGND
Vcc
AD1865
JP1
DAC VOLTAGE SELECT
DNS
+
C4
C2
0.1uF
100uF 6.3V
DNS
DNS
+15
AUDIO POWER
Vcc
5
--15V
4
D
+15V
3
AGND
2
+5V
1
DGND
GJ1
1
2
J602
+
C189
C188
0.1uF
100uF 6.3V
~15
1
2
Audio Board (keyboard models)–A DACs, B DACs, Filters (1 of 4)
3
R5
12
6.04K
LVOUT
13
1
C13
C19
LRF
17
220PF
DNS
LIOUT
C29
14
1
2
1
2
LSJ
2200PF 1%
1
1
2
RSJ
1
C20
R1
26
RIOUT
C11
47uF
3.57K
2
RRF
220pF
1
2
1
2
2
3
-
RVOUT
+
21
+5VA
3
22
+
-5VA
11
NC1
16
C9
C14
NC2
15
0.1uF
0.1uF
AGNDL
28
AGNDR
R6
6.04K
~5ANA
+5ANA
1
C21
DNS
C30
1
2
2200PF 1%
1
C22
R2
47uF
3.57K
1
2
1
2
2
-
+
3
+
R7
6.04K
1
C23
DNS
C31
1
2
2200PF 1%
1
C24
R3
47uF
3.57K
12
1
2
1
2
2
LVOUT
-
13
+
C12
LRF
17
3
220pF
LIOUT
+
14
1
2
LSJ
1
1
2
RSJ
26
RIOUT
C16
2
RRF
220pF
3
RVOUT
21
+5VA
22
-5VA
11
NC1
16
C10
C15
NC2
15
0.1uF
0.1uF
AGNDL
28
AGNDR
R8
6.04K
1
C25
DNS
C32
1
2
2200PF 1%
1
C26
R4
1
2
47uF
3.57K
1
2
1
2
2
L1
-
+
2.5T
3
DNS
+
1
3
IN
OUT
+5ANA
GND
+
C5
+
C17
C7
C27
VR1
100uF 25V
0.1uF
100uF 25V
0.1UF
7805
+
C6
7905
+
C18
C8
C28
VR2
100uF 25V
0.1uF
100uF 25V
0.1UF
GND
2
3
IN
OUT
~5ANA
3
4
5
C41
2200PF 1%
2
1
2
~15
R9
R17
R29
8.45K
8.45K
15.0K
2
1
2
1
2
5
1
+
7
6
C33
C45
1
-
U4
180PF 2%
68PF 2%
1
2
NE5532A
1
2
U4
+15
NE5532A
R10
R25
R30
31.6K
4.64K
76.8K
1
2
1
2
1
C37
R21
270PF 2%
57.6K
C42
2200PF 1%
2
1
2
~15
R11
R18
R31
8.45K
8.45K
15.0K
2
1
2
1
2
5
1
+
7
6
C34
C46
1
-
U6
180PF 2%
68PF 2%
1
2
NE5532A
1
2
U6
+15
NE5532A
R12
R26
R32
31.6K
4.64K
76.8K
1
2
1
2
1
C38
R22
270PF 2%
57.6K
C43
2200PF 1%
2
1
2
~15
R13
R19
R33
8.45K
8.45K
15.0K
2
1
2
1
2
5
1
+
7
6
C35
C47
1
-
U8
180PF 2%
68PF 2%
1
2
NE5532A
1
2
U8
+15
NE5532A
R14
R27
R34
31.6K
4.64K
76.8K
1
2
1
2
1
C39
R23
270PF 2%
57.6K
C44
2200PF 1%
2
1
2
~15
R15
R20
R35
8.45K
8.45K
15.0K
2
1
2
1
2
5
1
+
7
6
C36
C48
1
-
U10
180PF 2%
68PF 2%
1
2
NE5532A
1
2
U10
+15
NE5532A
R16
R28
R36
31.6K
4.64K
76.8K
1
2
1
2
1
C40
R24
270PF 2%
57.6K
4
5
6
7
C53
C65
2200PF 1%
2200PF 1%
1
2
1
R37
R49
R57
15.0K
6.98K
6.98K
2
1
2
3
1
2
1
2
+
1
2
C57
-
U5
150PF 2%
NE5532A
1
2
R45
R50
4.64K
53.6K
2
1
2
1
2
C49
C61
R41
47PF 2%
1000PF 2%
226K
C54
2200PF 1%
1
2
R38
R51
R58
15.0K
6.98K
6.98K
2
1
2
3
1
2
1
2
+
1
2
C58
-
U7
150PF 2%
NE5532A
1
2
R46
R52
4.64K
53.6K
2
1
2
1
2
C50
C62
R42
47PF 2%
1000PF 2%
226K
C55
2200PF 1%
1
2
R39
R53
R59
15.0K
6.98K
6.98K
2
1
2
3
1
2
1
2
+
1
2
C59
-
U9
150PF 2%
NE5532A
1
2
R47
R54
4.64K
53.6K
2
1
2
1
2
C51
C63
R43
47PF 2%
1000PF 2%
226K
C56
2200PF 1%
1
2
R40
R55
R60
15.0K
6.98K
6.98K
2
1
2
3
1
2
1
2
+
1
2
C60
-
U11
150PF 2%
NE5532A
1
2
R48
R56
4.64K
53.6K
2
1
2
1
2
C52
C64
R44
47PF 2%
1000PF 2%
226K
6
7
Kurzweil K2600 Series Service Manual
8
DCLKD {2-A1}
DCLKB {2-A1}
DACDB {2-A1}
DACDA {2-A1}
DACLE {2-A1}
2
ALEFT {3-A1,4-B1}
A
~15
+
C190
47uF
5
+
7
6
-
U5
NE5532A
+15
R65
4.12K
1
2
R61
22.6K
C66
2200PF 1%
1
2
ARIGHT {3-A4,4-C1}
~15
+
C191
47uF
5
+
7
6
-
U7
NE5532A
B
+15
R66
4.12K
1
2
R62
22.6K
C67
2200PF 1%
1
2
BLEFT {3-A6,4-B1}
~15
+
C192
5
47uF
+
7
6
-
U9
NE5532A
+15
R67
4.12K
1
2
R63
C
22.6K
C68
2200PF 1%
1
2
BRIGHT {3-C1,4-C1}
~15
+
C193
5
47uF
+
7
6
-
U11
NE5532A
+15
R68
4.12K
1
2
R64
22.6K
D
YOUNG CHANG CO., LTD.
Reproduction without the express written consent
of Young Chang Co., Ltd. is prohibited.
K2600K AUDIO PCB SV2.5
A DACs, B DACs, Filters
Filename:
021212D0
Date:
9/21/99
Eng:
By:
MRL
Mfg:
Sht
01
of
04
Doc:
021212
Rev:
RDV0
8
7-23
Advertisement
Chapters
Table of Contents
