Kenwood KDC-M4524 Service Manual page 15
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3 7 63 1515 0
60
R254
10
6.7V
TE
L 13942296513
R406 100K
76
R405 100K
77
R401 100K
78
R402 100K
79
R403 100K
80
R404 100K
81
0-4.9V
82
82
0-2.2V
83
83
84
84
85
85
85
86
86
87
87
88
88
89
90
90
91
91
92
93
94
94
95
95
96
96
97
97
98
98
151
99
99
47K
100
100
5V
0K
0V
2
3
1
J5
(X25-9XXX-XX)
MODEL NAME
www
KDC-MP222
K
X25-9620-10
KDC-MP4023/G
M
X25-9620-21
KDC-M4524/G
E
X25-9812-70
KDC-M4524Y/GY
E2
X25-9622-71
.
CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list).
Indicates safety critical components. 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.
• DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual
instruments or/and units.
G
J1
9
10
8
7
TH1
R2
36K
R3
C3
100K
1000P
R6
Q1
10K
SERGE
DET.
Q2
B.U.
DET.
100K
2
9
45
0V
5V
0V
N.C
0.6-4.2V
5V
5V
N.C
0V
0V
N.C
N.C
N.C
N.C
S-METER
5V
0V or
NOISE
IFC-OUT
5V
CH-MUTE
0V
CH-REQH
IC1
5V
R CLK
0V
SYSTEM
CH-REQC
u-COM
5V
KEY-REQ
0V
LO.S SW(SW1)
5V
12EJE SW(SW2)
0V
N.C
5V
N.C
0V
CH-DATAC
5V
CH-DATAH
0V
CH-CLK
5V
L-DATAL
0V
L-DATAS
L-CLK
5V
5V
5V
0V
0V
PLL-DATA
0V
5V
5V
5V
0V
0V
5V
0V
5V
0V
0V
5V
Q401
0V
RST
R24,
R206,
UNIT No.
A
B C
C23
R23
R32
R412
411
416
NO
YES
NO
NO
100K
NO
YES
NO
YES
YES
YES
100K
NO
NO
YES
NO
YES
NO
22K
YES
YES
YES
NO
YES
NO
22K
YES
YES
x
ao
y
i
H
8
11
12
13
14
15
16
FUSE
6
5
4
3
2
1
R8
C1
TEL
3.3K
2200u16
MUTE
+
1/2W
D1
C4
0.01
∗
R10
R32
10K
C31
0.01
Q3
D31
∗
R7
A
Q3
52
ACC
DET.
R13
R12
5.6K
47K
SW
46
5V
Q4
74
C409
46
47u16
+
C410
0.01
51
50
5.0V
PS1-1
50
49
Q Q
PS1-0
49
5V
3
6 7
1 3
48
0V
PS2-1
48
47
5V
0V or 5.0V
PS2-0
47
46
0V
SW5V
5V
45
0V
CD MECHA+B
44
TYPE0
0V or 5.0V
43
TYPE1
42
N.C
41
0V
IC2 TYPE0
0V
40
IC2 TYPE1
39
CLKOUT
5.0V
38
VDD
37
0V
VSS
20.000MHz
36
X1
35
X2
C405 1
34
3.3V
REGC
R420 10K
33
XT2
32.768kHz
32
XT1
5V
31
0V
RESET
30
N.C
5V
29
0V
M MUTE R
29
28
M MUTE L
28
27
LOE/LIM SW(SW3)
27
or 0V
5V
0V
26
MUTE
26
5V
0V
5V
DSI
0V
ILLUMI
D402
SW
KDC-M4524/G (1/2)
KDC-M4524Y/GY (1/2)
D23,
R417
Q23
W101
25
YES
NO
NO
NO
YES
YES
YES
NO
NO
NO
YES
YES
NO
NO
YES
YES
u163
.
I
KDC-M4524/G/Y/GY
2 9
9 4
2 8
IC3
POWER SUPPLY IC
0V
1
GND
14.0V
D24
2
2
PCON
∗
14.0V
D25
3
3
PANT
8.1V
4
9
FM
7.9V
5
8
AM
8.1V
6
AUDIO
14.3V
7
VCC
5.0V
8
VDD
C28
220u16
13.1V
9
VBU
∗
+
Q23
SW for
POWER
SUPPLY IC
VDD
7V
5V
3V
1V
10
SW1
R25 1K
50
D26
R26 1K
49
VDD
R27 1K
5V
48
3V
R28 1K
1V
11
47
SW2
10.3V
12
ILM
WHT
FL+
WHT/BLK
FL-
GRY/BLK
FR-
GRY
FR+
P CONT
BLU/WHT
ANT CONT
BLU/WHT
RED
BLK
1 5
0 5
8
2 9
9 4
R44
47K
∗
R412 100K
∗
R411 100K
∗
R416 100K
∗
R417 100K
R415 100K
2
4
6
A
R419 100K
1
3
5
P.CON
2
4
6
B
1
3
5
X1
C407
IC1
:
UPD703030GC011
22P
IC2
:
TDA7407D
X2
C408
IC3
:
BA4911-V4
27P
IC4
:
TDA7560
IC6
:
HD74HC27FP
IC7
:
SAA6581T
RESET
IC8
:
PST3436UL
IC
IC9
:
SI-8050JD
C406
0.1
Q1-3,41,201,401
:
2SD1819A or
0V
IC8
2SC4081
Q4
:
2SA1036K
Q21
:
2SD2375 or
2SD2396
Q22,23
:
UMC2N
Q101,351,352
:
UN5216 or
DTC143TUA or
KRC410
Q151
:
UN5114 or
DTA114YUA or
KRA307
Q350
:
UN5112 or
DTA124EUA or
KRA303
SIGNAL LINE
m
GND LINE
B LINE
co
X25-9622-71/9812-70 (2/2)
J
9 9
1
10
11
12
13
14
15
16
7
6
5
4
3
2
1
2
DC CORD
(B30-4784-05)
(B30-6131-05)
3
GRN
8 9
RL+
GRN/BLK
7
10
RL-
VIOL/BLK
6
11
RR-
VIOL
5 12
RR+
4 13
BRN
TEL MUTE
3 14
2 15
YEL
1 16
2 8
9 9
4
8
7
8
7
DC CORD
(B30-4790-05)
(B30-6134-05)
5
D1
:
1N5393G-M6 or
∗
S2V20
A
D2-4,201,202,309,310
:
MA4068(N)-M
D21
:
MA4082(N)-L or
HZS9A1L
D22,23,251-255
:
AM01Z or
DSM1SD2 or
ERA15-02
D24,25
:
D1F60
D26
:
MA152WK or
DAN202K or
KDS184
D31
:
MA4047-M or
HZS5B1
D41
:
SFPB-54V
D51,52,152-155,160,161,
203,206,269-271,401
:
1SS133
D151,157-159,162,
301-308,311
:
MA4062-L or
6
HZS6C1
D156
:
HZS12A2
D256-258
:
S1J or
D1F60
D402
:
B30-1567-05
X16-
J1
2/2
A
7
15
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