Audio Board (Rack Models)-A Dacs, B Dacs, Filters (1 Of 4) - Kurzweil K2600 Series Service Manual

Kurzweil K2600 Series Service Manual
1
PWRSENSE {4-A2}
UNMUTE {4-A2}
J601
K2501 DAC Connector
DGND 2 4 6 8 10 12 14 16
15
CPUMUTE
A 13
PWRMUTE
11 DACDA
DACDA
9 DACDB
DACDB
7
CH1
5
CH2
3 DACLE
DACLE
1
DACCLK
U1
74HC139
2 4 DCLKA
A Y0
3 5
B Y1
6 DCLKC
Y2
1 7
G Y3
U1
Vcc
74HC139
14 12
B A Y0
13 11
B Y1
10
Y2
15 9
G Y3
C
C1
0.1uF
Vcc
JP1
DAC VOLTAGE SELECT
DNS
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
1
7-18
Audio Board (rack models)–A DACs, B DACs, Filters (1 of 4)
2 3
U2
7 12
CLK LVOUT
20 13
C13 C19
LTRIM LRF
19 17
220PF DNS
LADJ LIOUT
9 14 1 2 1 2
LLE LSJ
10 1 1 2
LDIN RSJ
C20
5 26
RDIN RIOUT C11
47uF 3.57K
6 2
RLE RRF 220pF 1 2 1
24 3
+
RADJ RVOUT
23 21
RTRIM +5VA
4 22
+5VD -5VA
27 11
NC3 NC1
25 16
C9 C14
NC4 NC2
18 15
0.1uF 0.1uF
NC5 AGNDL
8 28
DGND AGNDR
AD1865
C3
~5ANA +5ANA
0.1uF C21
DNS
1 2
C22
47uF 3.57K
1 2 1
+
C23
DNS
1 2
C24
U3
47uF 3.57K
7 12 1 2 1
CLK LVOUT
+
20 13
C12
LTRIM LRF
19 17
220pF
LADJ LIOUT
9 14 1 2
LLE LSJ
10 1 1 2
LDIN RSJ
5 26
RDIN RIOUT C16
6 2
RLE RRF 220pF
24 3
RADJ RVOUT
23 21
RTRIM +5VA
4 22
+5VD -5VA
27 11
NC3 NC1
25 16
C10 C15
NC4 NC2
18 15
0.1uF 0.1uF
NC5 AGNDL
8 28
DGND AGNDR
AD1865
C25
DNS
1 2
C26
1 2
47uF 3.57K
1 2 1
L1
+ +
C4
C2 2.5T
0.1uF
100uF 6.3V DNS
DNS
DNS
+15
1 3
IN OUT
GND
+ +
C5 C7 C17
VR1
100uF 25V 0.1uF 100uF 25V
7805
+ C6 7905 + C18
C8
VR2
100uF 25V 0.1uF 100uF 25V
GND
2 3
IN OUT
~15
2 3
4 5
R5 C41
6.04K 2200PF 1%
1 2 1
C29
~15
R9 R17
2200PF 1%
8.45K 8.45K
1 2
R1
1 2 1 2 5
+
2 2
- 6
C33
1 -
U4
180PF 2%
3
+ 1 2 NE5532A
U4
+15
NE5532A
R10 R25
31.6K 4.64K
1 2 1
C37
R21
270PF 2%
57.6K
R6 C42
6.04K 2200PF 1%
1 2 1
C30
~15
R11 R18
2200PF 1%
8.45K 8.45K
1 2
R2
1 2 1 2 5
+
2 2
- 6
C34
1 -
U6
180PF 2%
3
+ 1 2 NE5532A
U6
+15
NE5532A
R12 R26
31.6K 4.64K
1 2 1
C38
R22
270PF 2%
57.6K
R7 C43
6.04K 2200PF 1%
1 2 1
C31
~15
R13 R19
2200PF 1%
8.45K 8.45K
1 2
R3
1 2 1 2 5
+
2 2
- 6
C35
1 -
U8
180PF 2%
3
+ 1 2 NE5532A
U8
+15
NE5532A
R14 R27
31.6K 4.64K
1 2 1
C39
R23
270PF 2%
57.6K
R8 C44
6.04K 2200PF 1%
1 2 1
C32
~15
R15 R20
2200PF 1%
8.45K 8.45K
1 2
R4
1 2 1 2 5
+
2 2
- 6
C36
1 -
U10
180PF 2%
3
+ 1 2 NE5532A
U10
+15
NE5532A
R16 R28
31.6K 4.64K
1 2 1
C40
R24
270PF 2%
57.6K
+5ANA
C27
0.1UF
C28
0.1UF
~5ANA
4 5
6
C53
2200PF 1%
2 1 2
R29 R37 R49
15.0K 15.0K 6.98K
1 2 1 2 3 1
+
7 1
2
C45 C57
-
U5
68PF 2% 150PF 2%
1 2 NE5532A 1 2
R30 R45 R50
76.8K 4.64K 53.6K
2 1 2 1 2 1
C49
R41
47PF 2%
226K
C54
2200PF 1%
2 1 2
R31 R38 R51
15.0K 15.0K 6.98K
1 2 1 2 3 1
+
7 1
2
C46 C58
-
U7
68PF 2% 150PF 2%
1 2 NE5532A 1 2
R32 R46 R52
76.8K 4.64K 53.6K
2 1 2 1 2 1
C50
R42
47PF 2%
226K
C55
2200PF 1%
2 1 2
R33 R39 R53
15.0K 15.0K 6.98K
1 2 1 2 3 1
+
7 1
2
C47 C59
-
U9
68PF 2% 150PF 2%
1 2 NE5532A 1 2
R34 R47 R54
76.8K 4.64K 53.6K
2 1 2 1 2 1
C51
R43
47PF 2%
226K
C56
2200PF 1%
2 1 2
R35 R40 R55
15.0K 15.0K 6.98K
1 2 1 2 3 1
+
7 1
2
C48 C60
-
U11
68PF 2% 150PF 2%
1 2 NE5532A 1 2
R36 R48 R56
76.8K 4.64K 53.6K
2 1 2 1 2 1
C52
R44
47PF 2%
226K
6
7 8
DCLKD {2-A1}
DCLKB {2-A1}
DACDB {2-A1}
DACDA {2-A1}
DACLE {2-A1}
C65
2200PF 1%
1 2
ALEFT {3-A1,4-B1}
A
~15
R57
+ C190
6.98K
47uF
2 1 2 5
+
7
6
-
U5
NE5532A
+15
R65
4.12K
2 1 2
C61
R61
1000PF 2%
22.6K
C66
2200PF 1%
1 2
ARIGHT {3-A4,4-C1}
~15
R58
+
C191
6.98K
47uF
2 1 2 5
+
7
6
-
U7
NE5532A B
+15
R66
4.12K
2 1 2
C62
R62
1000PF 2%
22.6K
C67
2200PF 1%
1 2
BLEFT {3-A6,4-B1}
~15
R59
+
6.98K C192
2 1 2 5
47uF
+
7
6
-
U9
NE5532A
+15
R67
4.12K
2 1 2
C63
R63 C
1000PF 2%
22.6K
C68
2200PF 1%
1 2
BRIGHT {3-C1,4-C1}
~15
R60
+ C193
6.98K
2 1 2 5
47uF
+
7
6
-
U11
NE5532A
+15
R68
4.12K
2 1 2
C64
R64
1000PF 2%
22.6K
D
YOUNG CHANG CO., LTD.
Reproduction without the express written consent
of Young Chang Co., Ltd. is prohibited.
K2600R Audio PCB SV2.5
A DACs, B DACs, Filters
Filename: 021218C0 Date: 9/15/99
Eng: By: MATT LINDI
Mfg: Sht 01 of 04
Doc: 021218 Rev: RCV0
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