Sony MKS-8080, Maintenance Manual

Page: 85 / 104

5-27
MKS-8080/8082
5-27
2
3
4
5
1
A B C D E F G H
X-HOLD DEST KEY ASGN
SW_BRITE
Q301
DTC123JKA-T146
S301
Q302
DTC123JKA-T146
S304
Q303
DTC123JKA-T146
S302
Q300
DTC123JKA-T146
S303
EN301
+5V
(3/3) IC302
TC74VHC74FT(EL)
ADDRESS/DATA-BUS
+5V
D301
1S2837-T1
GND
D304
1S2837-T1
GND
0.1uF
C301
GND
+5V
+5V
GND
0.1uF
C303
(2/3) IC302
TC74VHC74FT(EL)
GND
(10/35)
CN101
+5V
100
R302
0.1uF
C304
+5V
0.1uF
C302
D302
1S2837-T1
+5V
D303
1S2837-T1
GND
0.1uF
C306
GND
GND
R305
100
+5V
GND
R303
22k
(1/4) IC301
TC7WH14FK(TE85R)
R301
22k
SD-BUS
0.1uF
C305
GND
GND
SW-READ-BUS
001,002,004,005
001,002,004,005,006
001,002,004,005,006
001,002,004,005,006
+5V
(4/4) IC301
TC7WH14FK(TE85R)
(9/35)
CN101
IC303
∗
1
TC74VHCT574AFT(EL)
(3/4) IC301
TC7WH14FK(TE85R)
GND
(2/4) IC301
TC7WH14FK(TE85R)
0.1uF
C307
+5V
100
R304
GND
(1/3) IC302
∗
1
∗
1
∗
1
∗
1
TC74VHC74FT(EL)
+5V
R306
100
+5V
GND
GND
43 21 43 21 43 21 43 21
C
B
4 5
A
VCC
14
GND
7
2 1
3
2 1
3
10
PR
9
Q
8
Q
13
CLR
11
CK
12
D
RIGHT 10
2 1
3
2 1
3
7
1
VCC
8
GND
4
LEFT 9
20
VCC
19
Q0
18
Q1
17
Q2
16
Q3
15
Q4
14
Q5
13
Q6
12
Q7
10
GND
9
D7
11
CK
1
OE
8
D6
7
D5
6
D4
5
D3
4
D2
3
D1
2
D0
5 3 2 6
4
PR
5
Q
6
Q
1
CLR
3
CK
2
D
KEY
D1
D4
XPTHOLD
D0
DEST
D3
ASGN
D5
D7
D2 D7
SD140
KEY
D6
D5
D4
D3
D2
XPTHOLD
D1
DEST
D0
ASGN
S2
S1
IC301
TC7W14FU(TE12R)
→
TC7WH14FK(TE85R)
IC303
TC74VHC574FT(EL)
→
TC74VHCT574AFT(EL)
MARK CHANGED INFORMATION SUFFIX NO.
Suffix 12 and Higher
*
1
SW-1091 (3/6)
BOARD NO. 1-684-388-11, 12
MKS-8080
SW-1091 (3/6)
SUFFIX: -11, 12