Kurzweil K2600 Series Service Manual
7-5
CPU Board–FDD, LCD, MIDI Interface (3 of 8)
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
A
B
C
D
A
B
C
D
1
2
453 1
2
453 1
2
453
OUTOUT/THRUIN
J815
MIDI
4
6
7
5
2
16
19
21
20
18
9
12
14
13
11
24
23
22
25
J820
FDD CTL DEV.
10
A0
11
D[0]
12
D[1]
13
D[2]
14
D[3]
15
D[4]
16
D[5]
17
D[6]
18
D[7]
20
GND
4
IRQ
3
RESET
1
SP1
2
SP2
19
VCC
8
ACCR
9
ADCR
7
CS
6
RD
5
WR
U43
PC910
2
3
6
5
S1
1
2
3
U11
PC410
1
3
5
C41
15pF
12
C43
47pF
12
Y2
16.000MHz
12
J804
240X64 LCD
8
C/D
11
D00
12
D01
13
D02
14
D03
15
D04
16
D05
17
D06
18
D07
1
FGND
19
FS
2
GND
9
N/C1
20
N/C2
3
VCC
4
VEE
7
CS
6
RD
10
RESET
5
WR
L4
1
2
L5
1
2
J807
FDD POWER
2
GND1
3
GND2
4
N/C
1
VCC
J805
FDD DATA
18
DIR
32
HDSEL
2
N/C1
4
NC2
10
SEL[0]
12
SEL[1]
14
SEL[2]
6
SEL[3]
34
DKCG
8
INDEX
16
MOTOR
30
RDATA
20
STEP
26
TRK0
22
WDATA
24
WEN
28
WRPT
19
GND[10]
21
GND[11]
23
GND[12]
25
GND[13]
27
GND[14]
29
GND[15]
31
GND[16]
33
GND[17]
1
GND[1]
3
GND[2]
5
GND[3]
7
GND[4]
9
GND[5]
11
GND[6]
13
GND[7]
15
GND[8]
17
GND[9]
16 MHz
DGND
VCC
U9
82C765
44
34
4
A0
15
DMAREQ
24
DRVTYP
7
D[0]
8
D[1]
9
D[2]
10
D[3]
11
D[4]
12
D[5]
13
D[6]
14
D[7]
16
IRQ
20
RESET
6
TC
19
ACCR
18
ADCR
3
CS
5
DACK
1
RD
2
WR
39
DEN/LCT
31
DIR
33
DS1
35
DS2
36
EM1/DS3
37
EM2/DS4
38
HDLD
27
PCSVL
28
SIDE
26
XA1
25
XA2
23
XB1
22
XB2
40
DKCG
17
DKCGEN
43
INDEX
21
RDATA
32
STEP
42
TRK0
30
WDATA
29
WE
41
WRPT
U13
74HC04
11 10
U13
74HC04
98
U13
74HC04
13 12
R61
2.2K
12
R57
2.2K
12
R63
2.2K
12
R59
2.2K
12
R55
2.2K
12
D5
LLN4148
12
Q5
MMBT2907
C
B
E
Q4
MMBT2907
C
B
E
U10
74HC245
2
A[1]
3
A[2]
4
A[3]
5
A[4]
6
A[5]
7
A[6]
8
A[7]
9
A[8]
1
DIR
19
G
18
B[1]
17
B[2]
16
B[3]
15
B[4]
14
B[5]
13
B[6]
12
B[7]
11
B[8]
R73
56
12
R65
110
12
R66
110
12
R64
56
12
R62
3K
12
R60
110
12
R76
110
12
R75
110
12
R74
110
12
R58
110
12
C42
.1uF
12
C40
1000pF,X7R
12
C46
1000pF,X7R
12
C38
.1uF
12
C39
.1uF
12
C49
1000pF,X7R
12
C44
1000pF,X7R
12
C45
1000pF,X7R
12
C48
1000pF,X7R
12
C47
1000pF,X7R
12
C51
1000pF,X7R
12
C50
1000pF,X7R
12
R69
56
12
R68
110
12
R67
110
12
R70
56
12
R72
110
12
R71
110
12
YOUNG CHANG CO., LTD.
of Young Chang Co., Ltd. is prohibited.
Reproduction without the express written consent
Filename:
Doc:
Mfg:
Eng:
Sht
By:
Date:
of
Rev:
K2600 CPU BOARD
FDD, LCD, MIDI Interface
Mike Richmond
021206-001 RDV2
021206D2 1/5/00
38
FDCIRQ {1-C8}
BD[15:00] {2-A1,5-D1,6-C8,8-A8}
BA[21:00] {2-A1,4-B1,5-D1,8-C8}
VCC VCC VCC VCC VCC
BD[15] CLK16
VCC VCC
BD[14] BD[15]
BD[13] BD[14]
BD[12] BD[13]
BD[11] BD[12]
BD[10] BD[11]
VRPT
BD[09] BD[10]
INDEX
BD[08] BD[09]
VCCDISKCHG
BD[08]
TRACK0
BA[00] FLOPPYVCC
BA[00]
FDCOUTCS {8-A8}
SEL3
FDCCTRLCS {8-A8}
MOTORON
FDCCS {8-A8} SEL1
CPUOE {1-D8,2-D1,4-B1,6-C1}
SEL0
CPUWE_HI {1-D8,2-D1,4-B1}
VCC
HEAD_SEL
STEP
DIR
FDCIRQ
VCC
WEN
WDATA
RESET {1-A1,8-B1,D8} RDATA
EXTMIDIRXD {1-B8}
EXTMIDITXD {1-B8}
VCC
VCC
VCC
LCDVCC
LCDCONT {8-D3}
LCDCONT
LCDCS
READ
WRITE_BUF
EXTMIDIRXDLO
VCC
EXTMIDITHRU
BD[08] LCDD0
BD[09] LCDD1
BD[10] LCDD2
BD[11] LCDD3
BD[12] LCDD4
EXTMIDITHRUO
BD[13] LCDD5
BD[14] LCDD6
BD[15] LCDD7
C/D {8-B8}
RESET {2-B1,4-B1,5-A1,8-D8}
VCC
WRITE {1-B1,2-B1,5-A1,6-C1,8-A1}
LCDCS {8-A8}
VCC
EXTMIDITXDO
Date:
Sht. 3 of 8
Eng:
Doc:
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