Kenwood KDC-9090R Service Manual page 11

J K
CH-IN
CN4
1 2
C65
0.47u50
43
+
C66
0.47u50
44
+
4.1V 4.1V
33
NC 4.1V 4.1V
32 1
OUT FL CDR
2
31
CDR OUT 2
OUT FR
3
CDGND
30
OUT RL 4
CDL OUT 4
29 5
IC2
OUT RR CDL
4.1V
6
8.2V 4.1V
28 E-VOL NC
NC
7
27
NC
VDD
8
0V 26 NC
GND 9 5.1V
25 5V AFS
NC 10
0V
AM
24
4.8V 11
SDA SDA 4.1V
NC
4.3V
23
SCL SCL
4.1V
E-VOL
R152
MUTE
4.7K
22K
Q35 22K
Q36 R98
4.7K
R151
10K
C51 4.7u16
C50
R145 47K 4.7u16
R141 +
R146 820 15K R143
47K
4.1V
4.1V
D21
8.2V
IC8
SPEANA
OP AMP
4.1V
0V
Q34
R147 10K SPEANA
4.1V
AGC
L4 4.7uH
D47 D46 D45 D44
21 19 17 15 13 11 9
22 20 18 16 14 12 10
CN5
to CD MECHA. (X32- )
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.
L M
3
5.1V
0V
1.6V
R77 1K 0V
75
R79
2.2K
R80 1K
76
76 SRM SW1
R81 5.1V
0V
2.2K R82 1K
77
77 SRM SW2
R83
2.2K R84 1K
78
78 SRM DET
R85
0V
100K
R86 2.2K
79
79 NOISE
0-4.2V
0-5.0V
80
R88 2.2K 80
80 S-METER
5.1V
C46 1000P
0V
81
81 R-DATA
82
82 R-QUAL
0V or 5.0V
R91 1K 83
83 IFC-OUT
R92 100K 84
NC
R93 100K 85 5.1V
NC
0V
R94 1K 86
86 SRM SUB-
87
87 R-CLK
R95 100K
88
88 CH-REQC
R97 100K 5.1V
0V
89
89 SC-REQ
R99 100K
5.1V
0V
R100 2.2K 90
90 CD-SW1
R101 2.2K
91
91 CD-SW2
R102 1K 92
92 SRM SUB+
5.1V
93
93 BU-DET 0V
94
94 CH-DATAC
R104
5.1V
0V
100K
95 5.1V
95 CH-DATAH 0V
L5
96
96 CH-CLK
R107
5.1V
R108
0V
100K
470
97
97 SC-DATA
R109 98
5.1V
MC-DATA
R110
0V 5.1V 5.1V
100K
470 99
0V 0V
99 MC-CLK
100
100 PAN5V
0V
5.1V
0V
5.1V
5.1V
0V
7 5 3 1
8 6 4 2
N O
CN3
51
50
49
48
88
96
5.1V
94
5.1V
95
0V
0V
51
5.1V
0V
1
5.1V
50
0V CH-MUTE 50
0.2V or 5.5V
0V or 5.0V 49
CH-RST 49
48
5.1V
5.1V CH-REQH 48
2
0V
0V
47 R62 100K
IC2TYPE1
46 R60 100K
IC2TYPE0
45
∗
NC
44 R55 100K
TYPE2 ∗
R56 100K
∗
43 R53 100K
∗
TYPE1
R54 100K
∗
42 R51 100K
∗
TYPE0
0V or 5.0V
R52 100K
41
NC
40
NC
39
CLKLOT
38 5.1V
VDD
IC1 X1
37 0V
VSS
20.0MHz
u-COM 36
X1 RDS
35
X2
C44
34 3.5V 1
REGC
80
33 C43
XT2
27P
X2
32.768kHz
32 C42
22P
XT1
5.1V
31 0V
RESET
5.1V
0V 31
30 R50
P-ON 30
29 1K
ANT-CON
5.1V 86
28
5.1V
0V P-CON 28
0V 92
27
EXT-AMP-CONT 27
5.1V 5.1V
26
0V
0V SW5V 26
0V 5.1V
0V
5.1V
0V
5.1V
0V
5.1V
0V
87
82
81
RST IC
∗
5.1V
IC16
RDS
3
0V 4 2
R65
1 220
0V
P Q
1 2 3 4 5 6 7 8
ANT.
WH1
1
2
1
RF GND
2
FM ANT
3
AM ANT
4
OSC GND
L9
IC1
Q43,44 Q44 4.7uH
5 IC2
R210 FM +B
FM+B IC3
Q43
1K
IC4
R211
22K IC5
22K
IC6
22K L10
IC7
Q45,46 Q46 4.7uH
6
R212 AM +B
AM+B
7 IC8,10-12
Q45
OSC GND
1K
IC14
R213 8
22K OSC GND
22K IC15
9
W/N IC16
10
22K
OSC GND
11 Q1,4
VT
Q2,11,17,19,21,22,30,
L11
31,34,36,52
4.7uH 12
PLL +B
Q3,18,20,23,27
Q53
Q5,15,53
13
47K
IPC OUT
Q6,7,13,28,32,33
47K
Q8,12,35,43,45
14
4 SDA
15
Q9
5 SCL
16 Q10
L12
DIG GND
Q14
4.7uH
17
VDD 5V
18
Q16
NOISE OUT
Q52 19
Q26
RDS OUT
Q29
Q37-42
20
AUDIO OUT Q44,46
21
Q51
AMIF OUT
22
S-METER
D1
L13
D2
4.7uH
23
IF1 +B D3,10,16
24
D4
IF1 GND
∗
D5
F/E TUNER
D6
D7
D8
IC15
7.6V
1 10 D9
7.6V CN7
VCC NC
D11,13,33-36,38-41
2 9 SRM SUB-
5.0V
NC OUT1 1 1 1 D12,14
3 SRM SW2
IN1 77 2 2 2
SRM DET
4
IN2 78 3 3 3 MASK
GND D15,30-32
MECHA
4 4 4
D17
SRM SW3
0V 5 75 5 5 5
D19,20
S-GND 8 7.6V SRM SW1
NC 76 6 6 6 D21,44-50
7 SRM SUB+
OUT2 7 7 7
6 D22-24,29
P-GND
0V D25,26
D27,28
MOTOR
D43
DRIVER
R214
2.2K
(X16-118X-XX)
RDS
MODEL UNIT
DECODER
NAME No.
5V
0V IC14 KDC-PS9018R 0-10
KDC-PS9590R
R215 2.2K 5V
1 KDC-9090R 2-71
16
QUAL 0V
RDCK KDC-8090R
5V
15
0V T57
C145
14
R216 2.2K OSCO
2 (X16-118X-XX)
RDDA 10P
C142 2.5V J1
10u10 3 C146
C141 15 S.GND
VREF
13 10P
330P +
4 OSCI
MPX ANA 13 14 ANA
2.4V
5.1V 5 12
FLGND 12 13 FLGND
OSEL VCC
0V 6 11 5.1V
MC CLK 11 12 MC CLK
GND EXTRES
7 10 0V
MC REQ 10 11 MC REQ
ARI TM
8 9
RST 9 10 RST
FILOUT FSEL
DATA I/O 8 9 DATA I/O
SC REQ 7 8 SC REQ
FAC 6 7 FAC
P RST 5 6 P RST
FAC 4 5 FAC
FL+B 3 4 FL+B
DGND 2 3 DGND
VDD 1 2 VDD
1 S.GND
1/2
KDC-9090R
R
1
CH CORD
(E30-4945)
: UPD703033GC051
: TDA7407
: M5237ML
: TA8273H
: TDA7401
∗ 2
:
: HD74HC02FP or
TC74HC02AF
: NJM4565M-TE2
: TDA7479D
: LB1930M
∗
:
: 2SB1548(P)
: 2SC4081 or
2SD1819A
: 2SA1576A or
2SB1218A
: DTC144EUA or
UN5213
: DTA124EUA or
KRA303
: DTC124EUA or
UN5212
: 2SD2375
: 2SA1648-Z
: DTA123JK or
KRA105S 3
: 2SB1443
: 2SB1277(Q,R)
: DTC114YUA or
UN5214
: DTC143TUA or
KRC410
: 2SB1188(Q,R)
: 2SB1427
: RM10ZLF
: RB160L-40
: MA4056(N)-M
: MA4082(N)-M or
HZS9A2L
: MA4100(N)-M
: MA4051(N)-M
: MA4056-M
: MA4047-M or
HZS5B1
: MA4110(N)-M
: 1SR154-400
: AM01Z or
DSM1SD2 or
4
ERA15-02
: 1SS133
: MA4062(N)-M
: DAP202U
: DA204K or
KDS226
: MA4062-L or
HZS6C1
: RD6.8M(B2)
: MA4068(N)-M
: IMSA-6801 or
SA-C2012-101TB
5
X13-
CN1
2/2
A
6
7