Technics SX-KN6500 Service Manual page 88

SCHEMATIC DIAGRAM-10
K L M N O P Q R
ZC110 ZC109
100Px4 100Px4
Z113
Z111
47x4
47x4
Z117
10Kx4
L
K
R144
J
4.7K
R145
4.7K
R146
4.7K
R147
10K
+3.3D
Z115
4.7KX8
Z114
4.7Kx4
R139 4.7K
+3.3D
R133 4.7K
R134 4.7K
R135 4.7K
+3.3D
Except (p) area.
R138
4.7K
(p) area only.
IC110
LC32V4265T25
(4M BIT DYNAMIC RAM)
13
R143
Z116
4.7K
4.7Kx4
14 NC
17
32 NC
P 43
O
42
N 41
M 40
L 38
K 37
J
36
I 35
H 10
G 9
F
8
E
7
D 5
C 4
B 3
A
2
C130 0.1
+3.3D
7 18 31 42
VCC(3.3V)
1OE
1 25
3OE
40 2OE 24
4OE
47 1A1 1Y1 2
46 1A2 1Y2 3
1A3 1Y3
44 5
43 1A4 1Y4 6
41 2A1 2Y1 8
40 2A2 2Y2 9
38 2A3 2Y3 11
2A4 2Y4
37 12
36 3A1 3Y1 13
35 3A2 3Y2 14
33 3A3 3Y3 16
32 3A4 3Y4 17
4A1 4Y1
30 19
29 4A2 4Y2 20
27 4A3 4Y3 22
26 4A4 4Y4 23
GND
4 10 15 21 28 34 39 45
IC109
T74LCX16244A
(16BIT BUS BUFFER)
+3.3D
C131
0.1
22 6 1
VCC VCC VCC
NC 15 C
WR
16 D
RAS
NC A
LCAS 31
30 B
UCAS
29
OE
15 NC 11
14 NC
12
13 NC 33
12 NC 34
11
10
9
8 I/O 8 28 I
7 7 27 H
6 6 26 G
5 5 F
25
AD
4 4 E
24
3 3 21 D
2 2 20 C
1 1 19 B
0 0 A
18
VSS
VSS VSS
44 39 23
1 2 3 4
CN104
+3.3D
f
e
d
c
b
a
Z
Y
X
W
V
U
T
S
R
Q