Cpu Board-Fdd, Lcd, Midi Interface (3 Of 8) - Kurzweil K2600 Series Service Manual

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