Kurzweil PC2 Series - Connector Board (Rack Models)-Digital Interface (Page 2 of 3

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
453 2 1453 2 1453 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
34
U5
74HCU04
1110
U5
74HCU04
12
U5
74HCU04
1312
C47
1000pF
12
C56
0.1uF
12
C25
1000pF
12
C22
1000pF
12
C21
1000pF
12
C20
1000pF
12
C19
1000pF
12
C17
1000pF
12
C18
1000pF
12
D13
LL4148
12
R106
3K
12
R5
56 5%
12
R4
56 5%
12
R6
270 5%
12
R97
110
12
R96
56
12
R101
220
12
R100
220
12
R98
110
12
R95
110
12
R93
56
12
R99
56
12
R102
56
12
R94
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:
PC2 Rack Connector PCB
Digital Interfaces
D. O'Neill
021250-000 B V3
021250B3 9/29/2000
23
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