Kenwood KDC-4090R Service Manual page 10

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J
K
(X13-9872-13)
1
ED1
2
KEY SCAN
START SW
KI1
KI2
KI3
KI4
KI5
R10
4.7
3
76
77
78
79
80
4
D23
J1
D-GND
1
PAN 5V
2
ILL-GND
3
LAMP+B
4
X14-
LED+B
J3
5
5
RESET
1/2
RST
6
R1 1K
L-RES
7
76
A
R5 1K
L-DATAL
8
77
R3 470
L-CE
9
78
R4 470
L-CLK
10
79
R2 470
L-DATAS
11
80
IC2
R12
1
1
REMO
12
OUT
GND
0V
R13
47
2
SW 5V
VCC
GND
13
PANEL SW
14
6
4.9V
REMOTE
ESD-GND
15
SENSOR
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.
7
DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual
instruments or/and units.
L
CP2
CP3
1K
1K
Q1
10K
10K
R9
1K
65
KI1
CP1 1K
66
KI2
67
KI3
68
KI4
69
KI5
70
VDD
5.0V
C3 0.047
71
VDD1
3.0V
C2 0.047
72
VDD2
1.7V
73
IC1
VSS
0V
74
KEY SCAN LCD DRIVER
TEST
0V
75
OSC
76
5V
RES
0V
77
DATAL
78
CE
79
CL
80
DATAS
D22
5V
5V
0V
0V
A
D7
D4
D1
D12
D10
D8
D5
D2
3
D13
D11
D9
D6
D3
4
M
N
KS2
VOL-
ATT
KS3
VOL+
40
KS4
S40
40
39
S39
39
38
S38
38
37
S37
37
36
S36
36
35
S35
35
KS5
34
S34
34
33
S33
33
32
S32
32
31
S31
31
30
S30
30
29
S29
29
MODEL NAME
28
S28
28
27
KDC-4590R
S27
27
26
KDC-4590RV
S26
26
25
KDC-4090R
S25
25
IC1
: LC75883E
IC2
: RS-171
Q1
: DTA114EK or
Q2,3
: 2SD2114K
D1-14
:
D17
:
: B30-1572-05
D18,19
D20,21
:
D22,23
:
D24-28
:
ED1
:
B
Q2
LED
AMBER
ON
Q3
LED
GREEN
ON
D14
D14
Q2
Q3
O
P
2SD2396
6
SRC
DTA114EK
DTC114YUA
DTC143TUA
UN5114
5
AUTO
FM
UN5214
2SA1036K
2SA1362
2SD1819A
1
4
dB
2SD2114K
E
2
3
CLK
AM
2SC4081
D20,21
UNIT No.
A
B
D24-28
ED1
2-71
NO
YES
NO
NO
B38-1059-05
2-72
NO
YES
NO
NO
B30-1058-05
2-73
YES
NO
YES
YES
B38-1059-05
DTA124EUA
DTC124EUA
KRA102S
UN2111 or
KRA102S
B30-1569-05(PG/RED)
B30-1564-05(BLUE)
B30-1567-05(RED)
DA204K
B30-1533-05(PG)
UMC2N
B LINE
2/2
KDC-4090R/Y
Q
R
NJM4565MD
DAN202U
DA204K
DA204U
DTA114YUA
B
C
UN5212
BR24C01AF
BR24C01AF-W
BA5917AFP
TDA7479D

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