Kenwood DS-401-TE Service Manual page 8

A B
Q Q
3 7 6 3 1 5 1 5 0
1 CD PLAYER UNIT (X32-4380-00)
1 BU+14
2 BU+14
3 SYS ACC
4 N.C.
5 BUS+
6 BUS-
7 GND
CN1
H-BUS CONNECTOR (14P) 8 GND
9 N.C.
10 N.C.
1 3 8 9 11 13
11 Rch OUT+
2 4 5 6 7 10 12 14
12 Rch OUT-
2
13 Lch OUT+
14 Lch OUT-
(X13-9090-00) (X92-) FC2
S1
1
CN2 CN2
R100 2.2K
2 NO SW1 NO SW1
16 16 16 16
R101 2.2K
NO SW2 NO SW2
15 15 15 15
GND GND
CN1
14 14 14 14
Lch- Lch-
Lch- 14 13 13 13 13 L-
Rch- Rch-
12 12 12 12 R-
Lch+ Lch+
Lch+ 13 11 11 11 11 L+
Rch- 12
Rch+ Rch+
Rch+ 11 10 10 10 10 R+
BUS-
N.C. 10
BUS- BUS-
N.C. 9 9 9 9 9
3
BUS+ BUS+
GND 8 8 8 8 8
GND GND
GND 7 7 7 7 7
GND GND
BUS- 6 6 6 6 6 BUS+
GND GND
BUS+ 5 5 5 5 5
SYS ACC SYS ACC
N.C. 4 4 4 4 4
BU+14V BU+14V
SYS ACC 3 3 3 3 3
F1 BU+14V BU+14V
L1
BU+14V 2 2 2 2 2
3A
220uH
BU+14V BU+14V
BU+14V 1 1 1 1 1
T E
L 1 3 9 4 2 2 9 6 5 1 3
4
C51
10u16 R62 1
R+
+
220 D4 2
3
4
5
C50
10u16 R61
R-
+
220 D3
5
6
7
L-
L+
6
w w w
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended
7
parts (refor 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 tha customer.
C D
R58
4.7K
IC5
ISO.AMP
17
C47
10u16
18
+
R57
4.7K
R183
100 1/2W
5
R184
6
100
1/2W
D16 Q17
R180
6.8K
IC6
C46
R181
10u16
6.8K
ISO.AMP
+
C120
0.01
SYSTEM
ON SW
ANALOG SW
IC7
14
13
AVR
8V SW
12
C54
11 R67 10u16
+ Q15
10 220
D6
4.7K
C53
4.7K
9 R66 10u16
+
220
8
D5
D12
+
x a o
. i
E F
IC4
Lch
(1/2) R44 R36 R32
C43 R48 2 10K 5.6K 4.7K
10u16 1.8K 1 L-
3
+
8
R46
L+
10K R38 R34
Q4,5 5.6K 4.7K
AUDIO MUTE
Q4
R50
4.7K
L.P.F.
D2
Q5 R49
R45 R37
4.7K
10K 5.6K
R+
R33
4.7K
C42 R47 4 5
10u16 1.8K 7
6 R43
+
R-
10K R35 R31
IC4
5.6K 4.7K
Rch (2/2)
IC3
IN OUT
GND
+ Q Q + +
3 7
D7
Q3 5V AVR
DAGND
22K
MUTE DRIVER
22K
Q12
Q10
SRV8V
Q13
R179 AVR R174
1K 1K
D13 D14
SERVO
+
5V DRIVER
Q16
R175
22K
10K
Q9
22K
R176
D11
Q11 47K
22K
BU DET.
R178 SERVO 5V AVR
22K
18K
C118 0.1 IC13
D8
IN OUT
D10 GND
D24 D23
+ +
C55
2.2
u 1 6 3
y
•DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to
variations between individual instruments or/and units.
G H
8 9 2 LPS 4 9
(X92-)
Ref.75
S1 MGSW
MGSW
R103
10K
S2 EJSW
EJSW
R104
100K
S3 ARMSW AVREF0
ARMSW
R105
100K
GND LPS
C101
Q6
100P
L.P.S.
X2
POWER SW
BUDET
C100 0.1
IC8
LPSCO
1 8
HOT
NC NC
2 7
DO
VCC GND
3 6 1
CS DO DI
R106 1K
4 5 2
SK DI DO
DI
R107 1K
3
CLK
4
EEPROM AVSS
R108 1K
SK 5
CS
6
CS
7
AVREF1
R115 100K
8
8 SDI
R114 1K 9
9 SDO
IC9
6 3 1 5 1 R113 1K 5 10 0 8 9
10 SCK
SYSTEM u-COM
11
T STB TSTB
12
T CLK TCLK
13
T DATA TDATA
14
AMUTE
15
AMUTE
R109
16
47K
17
17 NO SW1
18
18 NO SW2
R110
19
47K
20
ADJSEL
Q14
22K
22K
m
c o
.
I J
8 2 9 9
IC14
1 8
56 DIN STB
2 7
57 DOUT VCC
3 6
NC BUS+ 6
4 5
GND BUS- 5
D17 D18
IE-BUS
DRIVER
C122
0.01
6.29MHz
IC10
RESET
R74
47K
RESET
ELVADJ
R151
100K
60
RESET BUS-I BUS-0
59
ELVADJ
R150
58
SLNSA
100K
57
R148 R149
57
BUS IN
4.7K 47K
56
56 R146 R147
BUS OUT
4.7K 47K
55 R145 100K
TYPE3
54 R144 100K
TYPE2
53 R143 100K
TYPE1
2 4 9 8 52 2 9 R142 100K 9
TYPE0
51
PON
PON
50
49
ELV- 49
48
ELV+ 48
47
DMUTE
46
SP/LO- 46
45
SP/LO+ 45
R171
44
LOESW 44
100
43
LOE SW
R170
42
LIMSW 42
41 100
LAON
LIM SW
40
39
38
37 P.ON
SW
Q7
C107
10u6.3
+