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Kurzweil K2600 Series Service Manual
1
VCC
R82
A
220
R83
330
BD[15:08]
BD[15]
BD[14]
BD[13]
BD[12]
BD[11]
BD[10]
BD[09]
BD[08]
BA[21:00] {2-A1,3-A1,5-D1,8-C8}
BA[02]
BA[01]
BA[00]
B
SCSICS {8-B8}
CPUOE {1-D8,2-D1,3-B1,6-C1}
CPUWE_HI {1-D8,2-D1,3-B1}
SCSIDACK {1-D2}
SCSIEOP {1-A8}
RESET {2-B1,3-D1,5-A1,8-D8}
4.7uF,6.3V,TANT
C
S2
AUTO
3
SCSI_DISCON {6-A8}
2
1
OFF
R162
2A
L6
1
SCSIVCC
2
1
2
TERMPWR
D
C52
+
C53
1000pF,X7R
4.7uF,35V,ELEC
1
7-6
CPU Board–SCSI Interface (4 of 8)
2
3
SCSIDRQ
3
74HC04
SCSIIRQ
5
74HC04
U14
53C80
20
1
SD7
D[7]
SBD[7]
21
44
SD6
D[6]
SBD[6]
22
43
SD5
D[5]
SBD[5]
24
41
SD4
D[4]
SBD[4]
25
40
SD3
D[3]
SBD[3]
26
39
SD2
D[2]
SBD[2]
27
38
SD1
D[1]
SBD[1]
28
37
SD0
D[0]
SBD[0]
35
SDBP
SDBP
16
A[2]
15
2
SRST
A[1]
RST
14
4
SBSY
A[0]
BSY
5
SSEL
SEL
17
33
SACK
CS
ACK
19
6
SATN
RD
ATN
18
WR
34
SREQ
REQ
8
32
SI/O
IRQ
I/O
30
SC/D
C/D
9
29
SMSG
DRQ
MSG
11
DACK
10
EOP
13
READY
7
RESET
VCC
23
DGND
3 12 31 36 42
VCC
U15
20
1
+
21
C54
2
12
22
GND1
3
13
23
GND2
4
14
24
GND3
5
15
25
GND4
6
16
26
GND5
7
17
27
GND6
8
18
28
GND7
9
3
10
1
4
VCC
TRMPWR
11
5
12
2
6
REG
13
U13
7
14
1
2
19
8
DISCONN
15
9
16
74HC04
10
17
11
18
C55
+
UC5608QP
4.7uF,6.3V,TANT
VCC
1
2
D6
S1A(1N4001)
2
3
4
5
VCC
R87
DNS
R88
U13
100
4
1
2
U13
6
J816
13
DB[7]
12
DB[6]
11
DB[5]
23
DB[4]
10
DB[3]
22
DB[2]
21
DB[1]
8
DB[0]
20
DBP
4
RST
6
BSY
19
SEL
5
ACK
17
ATN
1
REQ
3
I/O
15
C/D
2
MSG
24
GND[26]
18
GND[27]
16
VCC
GND[28]
25
TPWR
14
GND[29]
R81
9
GND[30]
7
GND[31]
10K
EXTERNAL SCSI
4
5
6
J817
13
DB[7]
12
DB[6]
11
DB[5]
23
DB[4]
10
DB[3]
22
DB[2]
21
DB[1]
8
DB[0]
20
DBP
4
RST
6
BSY
19
SEL
5
ACK
26
17
26
MT1
ATN
MT1
27
27
MT2
MT2
1
REQ
3
I/O
15
C/D
2
MSG
24
GND[26]
18
VCC
GND[27]
16
GND[28]
SCSI
25
TPWR
R84
14
GND[29]
9
GND[30]
10K
7
GND[31]
EXTERNAL SCSI
6
7
8
VCC
VCC
VCC
VCC
C56
C57
C58
C59
.1uF
.1uF
.1uF
.1uF
A
SCSIDRQ {1-A1,D2}
SCSIIRQ {1-C8}
J818
SD7
16
DB[7]
SD6
14
DB[6]
SD5
12
1
DB[5]
GND[1]
SD4
10
3
DB[4]
GND[2]
SD3
8
5
DB[3]
GND[3]
SD2
6
7
DB[2]
GND[4]
SD1
4
9
DB[1]
GND[5]
SD0
2
11
DB[0]
GND[6]
SDBP
18
13
DBP
GND[7]
15
GND[8]
SRST
40
17
RST
GND[9]
SBSY
36
19
B
BSY
GND[10]
SSEL
44
21
SEL
GND[11]
SACK
38
23
ACK
GND[12]
SATN
32
25
ATN
GND[13]
27
GND[14]
SREQ
48
29
REQ
GND[15]
SI/O
50
31
I/O
GND[16]
SC/D
46
33
C/D
GND[17]
SMSG
42
35
SCSI
MSG
GND[18]
37
GND[19]
20
39
GND[26]
GND[20]
INT.
22
41
GND[27]
GND[21]
24
43
GND[28]
GND[22]
45
26
GND[23]
TPWR
47
GND[24]
28
49
GND[29]
GND[25]
30
GND[30]
34
GND[31]
INTERNAL SCSI
C
VCC
SCSI
R97
THRU
10K
SCSISNS2 {6-B1}
SCSISNS1 {6-B1}
SCSISNS0 {6-B1}
All resistors are 5% unless specified otherwise.
All capacitors are X7R unless specified otherwise.
D
YOUNG CHANG CO., LTD.
Reproduction without the express written consent
of Young Chang Co., Ltd. is prohibited.
K2600 CPU BOARD
SCSI Interface
Filename:
021206D2
Date:
1/5/00
Eng:
By:
Mike Richmond
Mfg:
Sht.
Sht
Date:
4
4 of 8
of
8
Doc:
Doc:
021206-001
Rev:
RDV2
Eng:
7
8
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