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Kenwood CD-423M-S Service Manual page 11

Multiple compact disc player
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K
L
(X32-377X-XX) (A/5)
Q Q
3 7 6 3 1 5 1 5 0
+5V
4.9V
IC9
(BOTTOM
VIEW)
SRAM
(256K)
80
80
A4
79
79
A3
78
78
A2
77
77
A1
76
76
A0
Q25
75
SQCK/SCK
75
74
74
SO
73
73
SQSI
72
72
SI
71
71
STB1
70
70
DOOR-SW
69
TXD-R
68
RXD-R
67
SQCK/SCK-SW
66
TXD-232C
65
IC6
RXD-232C
(BOTTOM VIEW)
64
+5V
AVREF1
u-COM
63
IC-RESET
62
62
LED
61
AVSS
60
R110
60
JOG1
47K
+5V
59
R109
59
JOG2
47K
58
58
DISC-SW1
57
T E
57
DISC-SW2
L
1 3 9 4 2 2 9 6 5 1 3
R108
ONLY
56
47K
INPUT
56
S1-SW
R107
55
4.7K
55
LOAD-SW
R106
54
4.7K
4.9V
54
UNLOAD-SW1
53
PROTECT
52
AVREFO
51
+5V
AVDD
4.9V
+
C64
0.01
63
+5V
53
+5V
+7.5V
Q3-8
7.5V
MUTE
5
C31
R57
47u10
560
7
6
+
Q3
Q5
8
R63
0.2V
IC3
80
(1/2)
R53
1K
10K
Q7
+7.5V
20KHz LPF
Q6
IC3
Q4
(2/2)
R54
R64
0.2V
1K
10K
79
4
C32
2
Q8
1
47u10
R58 560
3
+
+B
+B
+7.5V
+7.5V
0.2V
w w w
C36
CN6
0.01
+B
AC
1
1
120V(K)
W150
C37
CN7
+B
230V(E)
2
2
220-240V(M)
0.01
GND
3
3
3
3
AC
D8
D7
-36V
110-120V(M)
B
4
4
2
2
.
S13
F2
1
1
5
5
F1
6
6
M
N
1
A16(1M)
1
2
A17
Q24
3
SCL
4
SDA
5
RD(OE)
5
6
WR(WE)
6
7
CE
8
Q23
ASTB(CE)
4.9V
9
VDD
+5V
10
RMUTE
11
RWRR
12
RWR
13
RTRN
14
L-D7
15
L-D6
16
L-D5
17
L-D4
18
L-D3
19
L-D2
20
L-D1
21
L-D0
22
VPP
23
+5VPWM
23
R100 47K
24
R-M-CW
24
R101 47K
25
R-C-CCW
25
26
R102 220K
N-CH
MON
R103 47K
27
S3-SW
27
R104 47K
28
S2-SW
28
29
0.2V
2.6V
REG-ON
2.5V
30
LOADM
30
-(IN2)
31
X2
12.5MHz
4.9V
26
+5V
+5V
+5V
+7.5V
R59
330
R60
330
7V SWITCHING
12.9V
POWER SUPPLY
+B
+B
L2
7.5V
D3
Q10
100uH
D11
+B
R91 100K
+
D18
R89 330
50
12.3V
Q9
D19
R90 330
D12
49
Q11
R92 100K
5.8V
+
D6
6.8V
Q12
x
a o
y
i
CN8
(K,P)
: AC120V 60Hz
1
1
(Y)
: AC110-120V/220-240V~
50/60Hz
2
2
(T,E)
: AC230V~ 50Hz
O
P
(X32- ) (B/5)
1-1
2-1
3-1
4-1
5-1
ED1
P1
P2
P3
P4
P5
8
1-2
2-2
3-2
4-2
5-2
P6
P7
P8
P9
P10
16G
1-3
2-3
3-3
4-3
5-3
60
F2
P11
P12
P13
P14
P15
59
F2
58
1-4
2-4
3-4
4-4
5-4
NP
57
P16
P17
P18
P19
P20
NP
15G
56
16G
1-5
2-5
3-5
4-5
5-5
55
15G
P21
P22
P23
P24
P25
54
14G
53
1-6
2-6
3-6
4-6
5-6
13G
52
P26
P27
P28
P29
P30
14G
12G
51
1-7
2-7
3-7
4-7
5-7
11G
50
10G
P31
P32
P33
P34
P35
49
9G
48
(2G-16G)
P1
13G
47
P2
46
P3
45
P4
44
P5
43
12G
P6
42
P7
41
P8
40
P9
39
P10
11G
38
P11
37
P12
36
(X32- ) (C/5)
P13
35
P14
34
STANDBY
10G
P15
33
R149
P16
D26
330
32
P17
31
NC
30
P35
ON/STANDBY
9G
29
P34
28
S1
P33
27
P32
26
P31
ON
OFF
E2
25
8G
P30
4
LED
S12
24
P29
3
POWER
23
P28
2
POW-P
22
P27
1
GND
21
P26
7G
20
TIMER PLAY
P25
19
P24
18
P23
17
P22
16
6G
P21
15
P20
Q
Q
14
P19
3
7
6
3
13
-35.2V
P18
CN9
12
8G
5G
11
1
36V
1
-36V
7G
2
2
F1
10
6G
9
3
3
F2
5G
4
LCD
8
4G
7
75
5
SCK
4G
3G
74
6
SO
6
2G
72
5
7
SI
1G
4
71
8
STB
NP
70
9
DOOR-SW
3
NP
3G
2
63
10
RST
F1
62
11
LED
1
F1
60
12
JOG1
59
13
JOG2
48
14
REM
2G
47
15
POWER
4.9V
+5V
16
u+5V
17
GND
P1
1G
P2
5.0V
+5V
18
+5V
+7.5V
19
+7.5V
E1
7.5V
J1
LED
4
POWER
3
1 Lch
POW-P
2
AUDIO
GND
1
(27Vrms)
2 Rch
P1
J2
SYSTEM
CONTROL
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list).
indicates safety critical components. For continued protection against risk of fire, replace only with same type and rating fuse(s). To
reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated
from the supply circuit) before the appliance is returned to the customer.
u 1 6 3
The DC voltage is an actual reading measured with a high impedance type voltmeter with no signal input. The measurement value may
vary depending on the measuring instruments used or on the product.
.
Q
R
2
4
9
9
8
36V
+5V
CP3
100Kx5
80
79
78
77
CP1
100Kx15
76
75
74
73
40
40
P14
27
39
28
5.0V
39
P13
29
38
38
P12
30
31
37
37
P11
32
36
33
36
P10
34
35
35
P9
35
36
34
34
P8
37
33
38
33
P7
39
32
32
P6
40
(BOTTOM VIEW)
41
31
FL(DOT) DRIVER
31
P5
42
30
43
30
P4
29
29
P3
44
45
28
28
P2
46
27
47
27
P1
48
49
26
NC
36V
50
25
+5V
VDD
51
24
-35.2V
AVDD
52
53
23
VSS
54
22
22
A/D0
55
21
21
A/D1
56
57
58
61
62
1
5
1
5
0
8
9
2
4
63
65
R118
66
100K
67
68
69
70
71
+5V
+5V
72
CONFIRM
REPEAT
S8
S6
S4
S2
2
R126 2K
R124 3K
R122 5.1K
21
DISPLAY
RANDOM
S9
S7
S5
S3
R127 2K
R125 3K
R123 5.1K
22
A1
REMOTE
3
+5V
+5V
DOOR
SENSOR
2
SW
REM
1
GND
11
15
36V
36V
m
c o
CD-423M/423M-S/424M/DPF-J3030/J5030
Y22-8230-10
S
T
2
9
9
36V
36V
+5V
+5V
CP2
100Kx15
36V
+5V
36V
-35.2V
61
61
P20
61
62
62
P19
62
63
63
P18
63
64
NC
65
8G
65
66
7G
66
67
6G
67
68
5G
68
IC13
69
4G
69
70
3G
70
71
2G
71
72
1G
72
73
9G
73
74
10G
74
75
11G
75
76
12G
76
77
13G
77
78
14G
78
79
15G
79
80
16G
80
5.0V
C72
9
8
2
9
47u6.3
9
+5V
C71
+
0.01
X4
5MHz
CN10
19 +7.5V
+5V
18 +5V
5.0V
17
GND
+5V
16 u+5V
15
15 POWER
14
14 REM
S10
DISK
SKIP
13
JOG2
12
JOG1
11
11
LED
6
10
RST
9
9
DOOR-SW
4.9V
15
8
STB
8
7
SI
9
6
SO
7
5
SCK
4
LCD
3
3
F2
2
2
F1
36V
1
-36V
CD-423M/423M-S/424M (K,P)
DPF-J3030 (T,E)
DPF-J5030 (Y)

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Cd-423mDpf-j3030Dpf-j5030Cd-424m