Kenwood KDC-M4524 Service Manual page 15

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