Kurzweil K2600 Series Service Manual
7-22
Front Panel/Scanner Board (rack models)–Scanner, Front Panel I/F
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
A
B
C
D
A
B
C
D
R5
10K
13
2
Q3
2N2222
B
CE
D10
1N4128
21
Q4
2N2907 B
CE
Q2
2N2907 B
CE
J701
SCANNER POWER
2
+5V
5
--12V
3
AGND
1
DGND
4
+12V
GJ2
12
GJ1
12
DGND
J702
4 8 13
6
+12
7
--12
9
BATSNS
11
CLK10
10
LCDCONT
3
SMIDI_RxD
5
SMIDI_TxD
12
CLK10EN
1
EXTIAK
2
EXTIRQ
14
RESET
X1
D9
RED
12
D8
RED
12
D7
RED
12
D6
RED
12
D5
RED
12
D4
RED
12
D3
RED
12
D2
RED
12
D1
RED
12
S1
DISK
31
24
S36
CLR
31
24
S33
9
31
24
S30
6
31
24
S27
3
31
24
S23
DEC
31
24
S21
CURS>
31
24
S20
CURS DN
31
24
S15
SOFT D
31
24
S12
SOFT A
31
24
S11
LAYER DN
31
24
S35
0
31
24
S32
8
31
24
S29
5
31
24
S26
2
31
24
S24
INC
31
24
S18
CURS<
31
24
S19
CURS UP
31
24
S16
SOFT E
31
24
S13
SOFT B
31
24
S10
LAYER UP
31
24
S34
+/-
31
24
S31
7
31
24
S28
4
31
24
S25
1
31
24
S38
ENTER
31
24
S37
CANCEL
31
24
S22
EXIT
31
24
S17
SOFT F
31
24
S14
SOFT C
31
24
S9
EDIT
31
24
S8
PROGRAM
31
24
S7
SETUP
31
24
S6
Q ACCS
31
24
S5
EFFECTS
31
24
S4
MIDI
31
24
S3
MASTER
31
24
S2
SONG
31
24
SP1
2
COMMON
1
PHASEA
3
PHASEB
U2
74HC74
11
CLK
12
D
13
CLR
10
PRE
9
Q
8
Q
U2
74HC74
3
CLK
2
D
1
CLR
4
PRE
5
Q
6
Q
U3
74LS145
15
A
14
B
13
C
12
D
1
0
2
1
3
2
4
3
5
4
6
5
7
6
9
7
10
8
11
9
C1
.1UF
12
+
C3
10uF 35v
12
+
C2
47UF,6.3V
12
Q1
MMBT2222
B
C
E
TP702
TP704
TP703TP701
R20
4..7K
12
R18
100
12
R4
10K
12
R1
10K
12
R11
100
12
R21
10K
12
R6
34.8K
12
R7
4.99K
12
R19
20K
12
R13
2.2K
12
R9
10K
12
R8
10K
12
R17
10K
12
R16
10K
12
R15
10K
12
R14
10K
12
R3
100 OHM
12
R2
1M
12
R10
10K
12
R12
100
12
C4
.1UF
12
C5
.1uF
12
C6
.1uF
12
C7
.1uF
12
INT1/
D0/
D1/
D2/
D3/
D4/
D5/
D6/
D7/
WE/
RD/
WR/
CS/
A0/
RDY/
INT3/
INT2/
E/
A00/
A01/
A02/
A03/
A04/
A05/
A06/
A07/
TxD/
PWM/
A08/
A09/
A10/
A11/
A12/
A13/
A14/
A15/
EV1/
EV2/
EV3/
RxD/
/SLD0
/SLD1
/SLD2
/SLD3
/SLD4
/SLD5
/SLD6
/SLD7
U1
37451
21
RD
26
RESET
20
WR
65
AIN[0]
64
AIN[1]
63
AIN[2]
62
AIN[3]
61
AIN[4]
60
AIN[5]
59
AIN[6]
58
AIN[7]
71
AVCC
70
AVSS
31
CLKOUT
25
MODE
11
P[50]
10
P[51]
9
P[52]
8
P[53]
7
P[54]
6
P[55]
5
P[56]
4
P[57]
22
R/W
24
RESETOUT
23
SYNC
72
VCC
69
VREFADC
68
VREFDAC
32
VSS1
73
VSS2
28
XIN
29
XOUT
67
DAC1
66
DAC2
57
P[00]
56
P[01]
55
P[02]
54
P[03]
53
P[04]
52
P[05]
51
P[06]
50
P[07]
49
P[10]
48
P[11]
47
P[12]
46
P[13]
45
P[14]
44
P[15]
43
P[16]
42
P[17]
40
P[20]
39
P[21]
38
P[22]
37
P[23]
36
P[24]
35
P[25]
34
P[26]
33
P[27]
3
P[30]
2
P[31]
79
P[32]
78
P[33]
77
P[34]
76
P[35]
75
P[36]
74
P[37]
19
P[60]
18
P[61]
17
P[62]
16
P[63]
15
P[64]
14
P[65]
13
P[66]
12
P[67]
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 RACK SCANNER
Scanner, Front Pnl I/F
Mike Richmond
021209A4 RAV4
021209A4 2000/11/02
11
VCC
P[7:0]
VCC
SMIDI_TxD
SMIDI_RxD
VCC
P[7]
VCC
P[6]
P[5]
P[7]
P[4]
P[3]
P[2]
P[6]
P[1]
P[0]
P[5]
P[4]
VCC
CLK10 P[3]
RESET
P[2]
P[1]
P[0]
VCC
P[3]
P[2]
VCC
EXTIAK
BATSENSE
EXTIRQ
VCC
+12V
~12V
VCC
VCC ~12V +12V
RESET
VCC VCC VCC VCC VCC +12V ~12V
~12V
RAV4: Changed value of R6 and R7 for Tianma LCD.
RAV3: Updated version to match BOM. No schem changes were made.
J702-12 must run
PCB Note:
Pins 3&4 on switches S1 - S38 are connected internally. Do not need traces between them.
Pins 1&2 on switches S1 - S38 are connected internally. Do not need traces between them.
PCB Note:
next to J2-11.
U1 U1 U3U2
MIDI
All resistors are 5% unless specified otherwise.
All capacitors are Z5U unless specified otherwise.
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