Kurzweil PC2 Series Service Manual
7-17
Connector Board (rack models)–Digital Interface (page 2 of 3)
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
A
B
C
D
A
B
C
D
IN
OUT
4
5
3
2
1
4
5
3
2
1
4
5
3
2
1
OUT/THRU
J320
MIDI
5
7
6
4
2
16
18
20
21
19
9
11
13
14
12
24
23
22
25
L5
AES XFRMR
3
1
4
6
2
5
J303
MIDI & CPU
10
+VBAT
5
IACK
4
IRQ
2
CONT
8
DIG_OUT
9
GND
6
INT_RxD
7
INT_TxD
1
MIDI_RxD
3
MIDI_TxD
S1
3
1
2
U6
PC910
2
3
7
5
6
8
J300
SPDIF OUT
1
2
3
4
U7
PC410
1
3
5
U5
74HCU04
9
8
U5
74HCU04
3
4
U5
74HCU04
11
10
U5
74HCU04
1
2
U5
74HCU04
13
12
C47
1000pF
1
2
C56
0.1uF
1
2
C25
1000pF
1
2
C22
1000pF
1
2
C21
1000pF
1
2
C20
1000pF
1
2
C19
1000pF
1
2
C17
1000pF
1
2
C18
1000pF
1
2
D13
LL4148
1
2
R106
3K
1
2
R5
56 5%
1
2
R4
56 5%
1
2
R6
270 5%
1
2
R97
110
1
2
R96
56
1
2
R101
220
1
2
R100
220
1
2
R98
110
1
2
R95
110
1
2
R93
56
1
2
R99
56
1
2
R102
56
1
2
R94
110
1
2
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:
PC2 Rack Connector PCB
Digital Interfaces
D. O'Neill
021250-000
B V3
021250B3
9/29/2000
2
3
VCC
VCC
VCC
DIGITAL_OUT
MIDI_RxD
MIDI_TxD
VCC
+VBAT
INTMIDITxD {1-A8}
INTMIDIRxD {1-A8}
PORT64 {1-D6}
CONTRAST {1-C8}
IRQ {1-A8}
OUT
THRU
OUT/THRU SELECT
Use either U6 or U7
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