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Kenwood Manuals
Stereo System
K-323
Service manual
Kenwood K-323 Service Manual page 14
Compact hi-fi component system
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A
K-323
1
CD
2
3
DQ0
DQ1
DQ2
RA1 47
D0
D1
D2
D3
RA2 47
D4
D5
D6
4
D7
R29 100
WR
R30 100
CAS
R31 100
RAS
BA0
BA1
A0
5
A1
A2
A3
DGND
6
DQ2
7
14
CD (1/3)
B
CD
MECHA
7
10
FOCUS
TRACKING
COIL
COIL
AGND
R105
Q8
Q6
390
IC14
1
VDD1
2
DQ0
COMMAND
3
DECODER
VDDQ3
4
DQ1
5
CONTROL
DQ2
LOGIC
6
VSSQ6
7
DQ3
8
COLUMN
DQ4
9
ADDRESS
VDDQ9
BUFFER
&
BURST
10
COUNTER
DQ5
11
DQ6
12
VSSQ12
13
DQ7
14
VDD14
R28
15
LDQM
10K
WE
16
17
CAS
18
RAS
R32
19
CS
100
20
BA0
21
BA1
22
LATCH CIRCUIT
A10/AP
RA5 47
23
A0
24
A1
INPUT & OUTPUT
25
BUFFER
A2
26
A3
27
VDD27
DQ
IC3
CONTROL
LOGIC
I/O SHIFT REGISTER
1
S
ADDRESS
2
Q
REGISTER
and COUNTER
3
W
4
VSS
DGND
00000h
C
C002
6
5
HDU-110
4
8
3
HOE
9
2
1
15
14
13 12
11
10 9
8
7
6 5
CN001
15 14
13
12
11
10
9
8
7
6
5
C31 10P
C30 10P
C9
C24 10P
330P
C10 10P
AGND
AGND
+3.3VA
ADDRESS
54
VSS54
53
DQ15
52
VSSQ52
51
DQ14
50
MODE
DQ13
REGISTER
49
VDDQ49
48
DQ12
ROW
ADDRESS
47
BUFFER
DQ11
46
&
VSSQ46
REFRESH
45
COUNTER
DQ10
44
DQ9
43
ROW
VDDQ43
DECODER
42
DQ8
41
VSS41
40
NC40
39
UDQM
CLK
38
CKE
37
36
NC36
35
A11
34
A9
33
A8
32
A7
31
A6
30
A5
29
A4
28
VSS28
DQM
HIGH VOLTAGE
GENERATOR
256 BYTE
STATUS
DATA BUFFER
REGISTER
HOLD
TOP ADDRESS SPACE
Size of the
read-only
memory area
OOOFFh
256 BYTES(PAGE SIZE)
X DECODER
D
C003
+3.3VA
4
3
2
1
CN1
4
3
2
1
C2
1
+3.3VD
RA4 47
D15
D14
D13
D12
+3.3VD
RA3 47
D11
D10
D9
D8
+3.3VD
R71
10K
L8
CLK
R40
CKE
100
RA7 47
A11
A9
A8
A7
RA6 47
A6
A5
A4
A10
DGND
R195
0
8
VCC
7
DGND
C
6
D
5
E
+1.8VD
+3.3VD
IC4
48MHz (OSC)
VCC
OUT
OE
GND
DGND
IC8
109
NC4
110
TCK
JT CK
111
nTRST
JT RST
112
BA1
DR BA1
R180
R14
0
10K
113
BA0
DR BA0
R183
R19
0
10K
114
A11
DR A11
R185 R22
0
10K
115
A10
DR A10
R186
R23
0
10K
116
A9
DR A9
R189
R24
0
10K
117
A8
DR A8
118
A7
DR A7
119
A6
DR A6
120
A5
DR A5
121
VDD18
122
VSS 5
DGND
123
VDD33
124
A4
DR A4
125
A3
DR A3
126
A2
DR A2
127
A1
DR A1
128
A0
DR A0
129
WR
DR WR
130
CAS
DR CAS
131
RAS
DR RAS
132
CKE
DR CLK
133
CLK
DR CLK
134
VSS 6
DGND
135
VDD33
136
D15
DR D15
137
D14
DR D14
138
D13
DR D13
139
D12
DR D12
R191
R25
140
GPB9
0
10K
R193
R26
141
GPB10
142
0
10K
GPB11
143
D11
DR D11
144
D10
DR D10
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