Kenwood KDC-M7024 Service Manual page 24

U
KDC-M7024/MP822
∗
IC1 :
-328,
IC2 : TDA7411
W1
331
IC3 : M5237ML
O NO
IC4 : TDA7560
S NO
IC5 : SI-8050JD
S NO
IC7 : S-80837CNNB
S NO
IC8 : TC74HC02AF
S NO
IC12 : TDA7479D
S YES
IC13,14 : LB1930M
S YES
IC15 : BR24C01AF-W
43
D25
1
AUXL
2
2 AUXC
3
3 AUXR
4
4 CDCHR+
5
CDCHR-
6
6 CDCHL-
7
CDCHL+
8
C12
NV+
0.01
9
NV-
R8 C11
10K 0.022
10
70
AM
R7 C9
69
4.7K 0.47 11
MPX
68
C10
150P
67
66
65
64
63
62
61
60
59
58
57
5.0V
IC15
4
5.0V
8
VCC
3 1
7 0V
E0
WC
2
2
5V
E1
3 6 0V
E2 SCL
1
4 5
VSS SDA
0V 5V
0V
for ROM
CORRECTION
L4
4.7uH
24
X25-966x-xx (3/4)
V
Q1,8,9,13 : 2SA2057 Q23,26
Q2,10,14,32-34 : 2SC4081
Q3,27 : 2SA1576A Q24,25
Q4,7,12,28,51,52,63 : DTA124EUA or Q28
UN5112 Q29
: DTC124EUA or
Q5,11,54,102 UN5212 Q53,55-60,104 : DTC143TUA or
: DTC144EUA or
Q6,30 UN5213 Q103
D26
4.2V
IC2
E-VOL & N.C. & MPX
0V or 2.7V or 3.7V
5V 5V
0-2.6V
0V 0V
TP116
Q54
Q53
R300
22K
4.7K
22K
Q54
E-VOL
MUTE SW
Q53
LOGIC IC
NOISE for MUTING
BUFFER
IC8
1
VDD
5V
0V
2
TP117 5V
3
0V
SCL
4
SDA
5V
TP118
0V
5
6
20
7
VSS
31
23
27
SMALL LAMP
DET SW
47K
24
Q33
D17
ACC DET
EX AMP
CONTROL BUFFER
∗
D
Q29
W
: DTC114YUA or D1 : 1N5393G-M5
UN5214 D2 : RB160L-40
: 2SB1240 D3 : MA4056(N)-M
∗
: D4 : MA4082(N)-L
: DTA123JK or D5 : SFPB-54V
KRA105S D6 : MA4110-L
D9-12,33-40 : 1SR154-400 or
UN5216 S1J
: 2SB1188(Q,R) D13,20,29-31 : 1SS133
R10 33K
C16
0.1 C14 0.1
33 4.2V
ACIN1R
R9 33K
C15
0.1 C13 0.1
32 4.2V
ACIN1L
∗
C23
31 4.2V
ACIN2L
∗
1
C24
30 4.2V
ACIN2R
1
C22
29 4.2V
ACIN3R
1
C21
28 4.2V
ACIN3L
1 L6
8.4V 4.7uH
27
VDD
0V
26
GND
25 4.2V
OUTLF
24 4.2V
OUTRF
23 4.2V
OUTRR
20
14 5.0V
13
5V
0V
B.U. DET
12
11
Q32
C213
10
5V
0.01
R141
0V
8.2K
9
C132
5V 1000P
8
0V
R133
100K
Q30
47K
R145
100K
R144
47K
2
14
13
X
D14 : MA4056-M D63-65 : DA204U
D15 : MA4047-M D66
D16 : MA4068(N)-M
D17 : MA4062(N)-M
D23,24 : DAP202U or
MA142WA
D25-27,50 : RD6.8M(B2)
D28,51 : RD6.8MW
D52-55,60,62 : MA3062WA
C41 R21
3.3u35 360
+
4.7K
Q55-60
PRE-OUT
∗
MUTE SW
E
4.7K
C42
3.3u35 R22
FR
+
360
C46 R34
3.3u35 360
RR
+
4.7K
∗
F
4.7K
D23 C45
Q51
3.3u35 R33
21
22K +
360
22K
C49 R45
3.3u35 360
+
Q52
D24
4.7K
22K
22
22K
4.7K
Q51,52
C50
3.3u35 R46
MUTE
20
DRIVER +
360
R303
D30
22K
11
POWER IC
D29
R302 220
IC4
C258 1u50
+
0V 24
PGND4
25
HSD
TH1
23
470 OUT4-
D31
0-4.4V 22
21
MUTE
OUT4+
14.4V 20
VCC2 19
0V 18 OUT3-
PGND3
17
OUT3+
R305 C257
4.3K 1u50 16
9 ACGND
15
+
6.8V IN3
C31
13
0.22u50
14
SGND
IN4
6.8V
C34
11
0.22u50
IN1
12
IN2
9
6.8V OUT1+
C256
7
OUT1-
33u16
6.8V 10
5
SVR
+ OUT2+
0V
8
3
PGND1
OUT2-
14.4V 6
VCC1
C255 5V
1
1u50 0V
TAB
+
4
15 STBY
0V 2
PGND2
∗
W1
D10
Q24
D12
Q23
10K
∗
47K
C
Q23,24
P.ANT SW
Y
: IMSA-6801
SIGNAL LINE
GND LINE
B LINE
R31
180
Q55
FRONT
Q56
R32
180
FR
R44
180
RR
Q58
REAR
Q57
R43
180
R55
180
Q59
NON-FAD
REAR
/NON-FAD
Q60
R56
180
6.8V
6.8V
6.8V
6.8V
C33
0.22u50
6.8V
0V
C32
0.22u50
6.8V
6.8V
FR+
6.8V
FR-
6.8V
RR+
6.8V
RR-
0V
Q27,28
Q25,26
P-CON
P.CON SW PROTECT
Q25
∗
Q28
Q27 10K
10K
R130
R129
22K
1K
1/2W