Kenwood KDC-7090Y Service Manual page 11

J K
R72 1K
75
R85
CP5
2.2K
1K
76
76 SRM SW1
R73
5V
0V
2.2K
77
77 SRM SW2
R74
2.2K R75 1K
78
78 SRM DET
R76
0V
100K
R77 2.2K
79
79 NOISE
0-5.0V 0-4.2V
R79 2.2K 80
80 S-METER
5V
C46 1000P
0V
81
81 R-DATA
5V
0V
82
82 R-QUAL
5V
0V
R82 1K
83
83 IFC-OUT
CP4
100K 0V 84
0V 85
5V
CP1
0V
1K 86
86 SRM-B
92
5V
87
87 R-CLK 0V
5V
88
88 CH-REQC 0V
R88 100K
R89 1K 89
SC-REQ/KEY-REQ
CP6
2.2K
90
90 CD-SW1
91
91 CD-SW2
92
SRM+B
5V
93
93 BU-DET 0V
94
94 CH-DATAC
R93 100K 5V
0V
95
95 CH-DATAH
L5
96
∗
96 CH-CLK
W7
R96 100K
∗
R98
97
97 SC-DATA/L-DATAS
1K
∗
R97
98
1K
98
MC-DATA/L-DATAL
R100 1K 99
99 ∗ MC-CLK//L-CLK/PANEL
R101 1M 5.0V
0V
100
100 PAN5V
5.0V
0V
5.0V
0V
AFS
21 19 17 15 13 11 9 7 5 3
22 20 18 16 14 12 10 8 6 4
CN5
to CD MECHA. (X32- )
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
CP3 CP2
1K 1K 5.0V
5.0V
5.0V
0V
1.6V 0V
5.0V
0V
0V
5V
CH-MUTE
0V
2.6V or 5.0V
5V
0V 0V or 5.0V
CH-RST
5V
CH-REQH
5V
0V
0V
IC2 TYPE1
IC2 TYPE0
0V
TYPE1
TYPE0
0V or 5.0V
CLKOUT
VDD
VSS
X1
∗
IC1
X2
u-COM
5V
0V
REGC
5V
XT2
0V
XT1
RESET
5V
5V
0V
5V
0V
0V
P-ON
5V
5.1V
ANT-CON
0V
0V
P-CON
5V
5V 5V
0V
0V
4.7V 0V
5V
0V
0V
EXT-AMP-CONT
5V
5V
0V 0V 5V SW5V
0V
0V
0V
5.0V
0V
5.0V 5.0V
0V
31
RST IC
∗
5.0V
IC16
3 2
0V 4
R68
220
1
0V
1
2
N O
CN3
8 7 6 5 4 3 2 1
51
50
49
51
48
88
96
94
5.0V 95
0V
50
50
L9
Q43,44 Q44 4.7uH
R210
49 FM+B
49 Q43
1K
48
R211
48
22K
22K
2
47 R62 100K
L10
22K
R60 100K Q45,46 Q46 4.7uH
46
R212
AM+B
45
Q45
1K
44 R213
∗ 22K
22K
1
R53 100K
43
22K
∗
L11
R51 100K
42 4.7uH
∗
R52 100K
41
40
39 Q53
38 5.0V 47K
37 0V X1
47K
20.0MHz
36
4
5
35 L12
4.7uH
C44
1
34 3.5V
R217
Q52
1K
C43
33
27P
RDS
X2
32.768kHz
32 C42
22P
11
5.0V
13
31 0V
80
31
30 R50
30
29 1K
28
28
MOTOR
DRIVER
27
27
IC15
26
26
10
7.6V
CN7
NC
5.0V
9
0V 7.6V 1
OUT1 7
VCC
8
NC 77 6
78 5
4
2
5.0V 75 3
NC
3
86 IN1 76 2
4 7 7.6V
92 IN2 OUT2 1
5 6
0V 0V
S-GND P-GND
R214
2.2K
87
RDS
DECODER
5V
0V IC14
5V
R215 2.2K 1
16
82 QUAL 0V
RDCK
5V
15
0V T57
14 C145
R216 2.2K OSCO
2
81 RDDA 10P
2.5V
C142
10u10 C146
3
C141
VREF
13 10P
330P +
4
OSCI
MPX
2.5v
5.0v 5 12
OSEL VCC
0V 6 11
5.0v
GND EXTRES
7 10 0V
ARI TM
8 9
FILOUT FSEL
P Q
ANT.
WH1
1
2
1
RF GND
2
FM ANT
3
AM ANT CH CORD
4
(E30-4946)
OSC GND
5
∗
FM +B
IC1 :
IC2 : TDA7407D
IC3 : M5237ML
IC4 : TA8263BH
IC8 : HD74HC02FP or
6 TC74HC02AF
AM +B
IC10 : S-80837ANNP
7
OSC GND
IC14 : TDA7479D
8
OSC GND IC15 : LB1930M
∗
9
IC16 :
W/N
10
OSC GND
11 Q1,4 : 2SB1548P
VT
Q2,11,30,31,36,52 : 2SC4081 or
12
PLL +B
2SD1819A
Q3,27,51 : 2SA1576A or
2SB1218A
Q5,8,12,15,50,53 : UN5213 or
DTC144EUA
13
Q6,7,13,28,32,33 : KRA303 or
IFC OUT
DTA124EUA
Q9 : 2SD2375
14
Q10 : 2SB1184
SDA
15 Q14 : KRA105S or
SCL
16 DTA123JK
DIG GND
Q26,44,46 : 2SB1277(Q,R)
17
Q29 : UN5214 or
VDD 5V
18
DTC114YUA
NOISE OUT
19 Q35,43,45 : UN5212 or
RDS OUT
DTC124EUA
Q37-40 : KRC410 or
DTC143TUA
D1 : S2V20 A
D2 : 1GWJ43
20 D3,16 : MA4056(N)-M
AUDIO OUT
D4 : MA4082(N)-L or
21
AMIF OUT
HZS9A2L
22
S-METER D5 : MA4110-L
23
IF1 +B D7 : MA4056-M
24
D8 : MA4047-M or
IF1 GND
HZS5B1
∗
D11,12,14,33-36,38-41
A1
TUNER : AM01Z or
DSM1SD2 or
ERA15-02
D15,18,30-32,61-64 : 1SS133
D17 : MA4062(N)-M
D22-24,29 : MA4062-L or
HZS6C1
SRM SUB-
D25,26 : RD6.8M(B2)
7 1
SRM SW2 D27,28 : MA4068(N)-M
6 2
D60 : 1MSA-6801 or
SRM DET
5 3 MASK SA-C2012-101TB
GND
4 4 MECHA
SRM SW3
3 5
SRM SW1
2 6
SRM SUB+
1 7
(X16-118X-XX)
MODEL UNIT
NAME No.
KDC-V7090RY
0-10
KDC-7090RY
KDC-V7090R
2-71
KDC-7090R
(X16-118X-XX)
J1
15 S.GND
ILL+B 13 14 ILL+B
ILLMUG 12 13 ILLMUG
X13-
MC CLK MC CLK CN1
11 12
(L CLK) (L CLK)
MC REQ MC REQ
10 11 2/2
(L CE) (L CE)
RST 9 10 RST
DATA I/O DATA I/O A
8 9
(L DATAS) (L DATAS)
SC REQ SC REQ
7 8
(L DATA L) (L DATA L)
SC CON SC CON
6 7
(DIMMER) (DIMMER)
P RST P RST
5 6
(NC) (NC)
REMO 4 5 REMO
NC 3 4 NC
DGND 2 3 DGND
VDD 1 2 VDD
1 S.GND
1/2
KDC-7090R/Y
R
1
2
3
4
5
6
7