Kenwood K-323, Service Manual

Page: 14 / 34

14
K-323
CD (1/3)
48MHz (OSC)
IC4
Q6
Q8
CN1
HDU-110
HOE
CN001
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
NC4
JT CK
JT RST
DR BA1
DR BA0
DR A11
DR A10
DR A9
DR A8
DR A7
DR A6
DR A5
VDD18
VSS 5
VDD33
DR A4
DR A3
DR A2
DR A1
DR A0
DR WR
DR CAS
DR RAS
DR CLK
DR CLK
VSS 6
VDD33
DR D15
DR D14
DR D13
DR D12
GPB9
GPB10
GPB11
DR D11
DR D10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
1
2
3
4
S
Q
W
VSS
8
7
6
5
VCC
HOLD
C
D
CONTROL
GENERATOR
HIGH VOLTAGE
I/O SHIFT REGISTER
ADDRESS
and COUNTER
DATA BUFFER
256 BYTE STATUS
REGISTER
Y DECODER
X DECODER
256 BYTES(PAGE SIZE)
00000h OOOFFh
TOP ADDRESS SPACE
read-only
Size of the
memory area
LOGIC
REGISTER
DQ1 DQ0
10K R62 R63 10K
10K
R64
0
R195
RA2 47
D4
D5
D6
D7
RA7 47
A11
A9
A8
A7
A5
A4
A6
RA6 47
A10
A1
A3
A2
A0
RA5 47
D14
D13
D12
RA4 47
D15
D8
D9
D10
D11
RA3 47
D1
D3
D2
D0
RA1 47
WR
R29 100
R30 100
CAS
R31 100
RAS
R32
R28
C18
0.1
C20
0.1
C45
0.1
C54
0.1
C73
10K
DQ2
DQ0
DQ1
BA1
BA0
100
10K
R40
R71
100
L8
0.1
C55
0.1
C56
CLK
CKE
DGND
OE
VCC
GND
OUT
R121
10K
C59
0.1
DGND
nTRST
TCK
C98
0.1
D15
D14
D13
D12
D11
D10
R191
0
R25
10K
R193
10K 0
R26
CAS
RAS
WR
CLK
CKE
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
C83
1
C82
1
BA1
BA0
DGND
10K 0
R14 R180
10K 0
R19 R183
R185 R22
10K 0
R23
10K
R186
0
10K 0
R24 R189
R103
30
R57 R67
30
220
R127
200
390
R105
R104
200
R102
300
C31 10P
C30 10P
C24 10P
C10 10P
AGND
LD1 LAS LD LAS
3 3
R109 R128
TK-
TK+ FC-
FC+
VREF MD LAS
R55
330P
1K
R54
C9
100
VF1 VT1
C2
VT2
1
VF2
15 14 11 12 13 9 10 4 7 8 5 6 2 3 1
AGND
AGND
DQ2
DGND
+3.3VD
+3.3VD
+3.3VD
+3.3VD
+1.8VD
+1.8VD
+3.3VD
+3.3VD
+3.3VD
0.1
+3.3VD
+3.3VD
+1.8VD
+3.3VA
+3.3V
A
+3.3VA
C78
1
DGND
DGND
C84 0.01
6
7
8
9
10
5
4
3
2
1
C002
C003
C001
4 14 15 11 13 12 10 9 7 8 6 5 3 2 1
GND
T+
T-
GND
LD F+
F-
MD
VF1
VR
VC
VT1
VCC
VT2 VF2
FOCUS TRACKING
COIL COIL
VR001
DGND
CLK
VDD27
A3
A2
A1
A0
A10/AP
BA1
BA0
CS
RAS
CAS
VSS28
NC36
A4
A5
A6
A7
A8
A9
A11
CKE
WE
LDQM
VDD14
DQ7
VSSQ12
DQ6
DQ5
VDDQ9
DQ4
DQ3
VSSQ6
DQ2
DQ1
VDDQ3
DQ0
VDD1
DQ13
UDQM
NC40
VSS41
VDDQ43
DQ10
VSSQ46
DQ11
DQ12
VDDQ49
DQ9
DQ8
DQ14
VSSQ52
DQ15
VSS54
DECODER
COMMAND
CONTROL
LOGIC
ADDRESS
COLUMN
REGISTER
MODE
CLOCK GENERA
TOR
&
BUFFER
BURST
COUNTER COUNTER
REFRESH
BUFFER
ADDRESS
ROW
&
DA
TA
CONTROL
CIRCUIT
LATCH CIRCUIT
BUFFER
INPUT & OUTPUT
BANK B
BANK C
BANK D
DECODER
BANK A
SENSE AMPLIFIER LA
TCH CIRCUIT
COLUMN DECODER &
ROW
DQ DQM
ADDRESS
IC8
IC14
IC3
CD
CD
MECHA
A B C D E
1
2
3
4
5
6
7