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K
L
Q Q
3 7 6 3 1 5 1 5 0
WHT
GRN
FL+
8
9
RL+
FL+
WHT/BLK
GRN/BLK
WHT/BLK
FL-
7
10
RL-
FL-
GRY/BLK
VIOL/BLK
GRY/BLK
FR-
6
11
RR-
FR-
GRY
VIOL
FR+
5
12
RR+
FR+
ANT CONT/
BLU/WHT
ANT CONT/
BLU/WHT
4
13
P. CONT
P. CONT
BLU/WHT
BRN
BLU/WHT
TEL MUTE
3
14
RED
2
15
BLK
YEL
1
16
MOLEX
CONNECTOR
7
5
3
1
B
8
6
4
2
7
8
ISO CONNECTOR
7
5
3
1
A
8
6
4
2
7
BUP
8
DC CORD
(E30-4790-05)
KDC-4021/Y/3021A/G/YA/YG/306A/G/YA/YG/
3020R/2021SA/SG/2092RYA/RYG
(X25-91XX-XX)
UNIT
IC1
MODEL NAME
C
E
C256
C404
D261-268
(UPD780058GCXXX)
No.
KDC-4021 (E)
42-70
YES
YES
33u50
YES
YES
427
KDC-4021Y (E)
32-70
KDC-4021V (E)
42-71
YES
YES
33u50
YES
YES
427
KDC-4021YV (E)
32-71
KDC-3020R (M)
30-21
YES
YES
33u50
YES
YES
427
KDC-3021A (E)
42-72
T E
L
1 3 9 4 2 2 9 6 5 1 3
KDC-306A (E)
42-74
NO
YES
33u50
NO
YES
427
KDC-3021YA (E)
32-72
KDC-306YA (E)
KDC-3021G (E)
42-73
KDC-306G (E)
42-75
NO
YES
33u50
NO
YES
427
KDC-3021YG (E)
32-73
KDC-306YG (E)
KDC-2092RYA (E)
32-74
NO
YES
33u50
NO
YES
428
KDC-2092RYG (E) 32-75
NO
YES
33u50
NO
YES
428
KDC-2021SA (E)
42-76
NO
NO
100u50
NO
NO
429
KDC-2021SG (E)
UNIT
R139,170,
R251-254,
W21,140,
R137
R138
R140
R258
R261 R263
W143
141,176-178
No.
171,412-414
260
42-70
NO
YES
YES
NO
NO
220
10
4.3K
YES
32-70
42-71
NO
YES
YES
NO
NO
220
10
4.3K
YES
32-71
30-21
YES
NO
YES
NO
NO
220
10
4.3K
YES
42-72
42-74
NO
YES
NO
YES
NO
220
10
4.3K
YES
32-72
42-73
42-75
NO
YES
NO
YES
NO
220
10
4.3K
YES
32-73
32-74
NO
YES
NO
YES
NO
220
10
4.3K
YES
YES
32-75
NO
YES
NO
YES
NO
220
10
4.3K
YES
YES
42-76
NO
YES
NO
YES
YES
100
430
180K
NO
∗
IC1
:
D1
:
1N5393G-M6
IC2
:
TDA7407D
D10,20,70,201,202,401,402
∗
IC4
:
:
MA4068(N)-M
IC6
:
TDA7479D
D11,13,264,267,268
: D1F60
IC7
:
BA4911-V4
D12,14,261-263,265,266
IC8
:
HD74HC27FP
: AM01Z or
IC11
:
S-80835ANNP
DSM1SD2 or
IC12
:
BR24C01AF
ERA15-02
D30
:
MA4047-M or
Q10,20,70,201
: 2SC4081 or
HZS5B1
2SD1819A
D40,50,101,103,104,251-253
: DTA124EUA or
:
1SS133
Q40
UN5112
D51
: MA4082(N)-L or
:
2SA1036K
HZS9A1L
w w w
Q50
:
UMC2N
D102
:
B30-1567-05
Q51
: 2SD2375 or
D106-109,403,404,407,409-411
Q55
2SD2396
:
MA4062-L
: DTA114YUA or
D110
: HZS12A2
Q102
UN5114
:
DTC143TUA or
SIGNAL LINE
Q223,224
UN5216
+B
B LINE
:
DTC114YUA or
.
Q251
UN5214
M
N
SWITCH UNIT (X16-14XX-XX)
WHT
GRN
8
9
RL+
GRN/BLK
7
10
RL-
VIOL/BLK
6
11
RR-
GRY
VIOL
5
12
RR+
4
13
BRN
TEL MUTE
3
14
RED
2
15
BLK
YEL
1
16
MOLEX
CONNECTOR
5
3
1
B
6
4
2
ISO CONNECTOR
5
3
1
A
6
4
2
BUP
DC CORD
(E30-4791-05)
J1
KDC-4021V/YV
ESD-GND
15
PANEL SW
14
SW5V
13
R102,
IC4
J3
R135
R136
REMO
12
168
TDA7560
E58-0879
YES
NO
YES
L-DATAS
11
X14-
J3
TDA7560
E58-0879
YES
YES
NO
L-CLK
10
TDA7560
E58-0879
YES
NO
YES
1/2
L-CE
9
TDA7560
E58-0879
YES
YES
NO
A
L-DATAL
8
L-RES
7
TDA7560
E58-0879
YES
NO
YES
RST
6
TDA7560
E58-0879
YES
YES
NO
TDA7560
E58-0879
YES
NO
YES
LED+B
5
TDA7386
E58-0879
NO
NO
YES
LAMP+B
4
ILL-GND
3
W179
A1 (F/E)
PAN 5V
2
NO
YES
X86-3512-70
D-GND
1
NO
YES
X86-3512-70
NO
YES
X86-3512-70
NO
YES
X86-3512-70
NO
YES
X86-3512-70
NO
X86-3512-72
NO
X86-3512-72
NO
YES
X86-3522-71
2SD2396
x
a o
y
X13-
i
J1
2/2
A
O
P
8
Q1
10K
KEY DETECT
TP35
SW
TP9 TP8
TP7
TP34
10K
TP24
TP1
R13 47
5.0V
65
+5V
KI1
KI1
TP33
R12 1K
TP2
66
KI2
KI2
TP27
IC2
R2 470
TP3
80
67
KI3
KI3
TP28
R4 470
TP4
79
68
KI4
KI4
TP29
R3 470
TP5
78
69
Q
Q
KI5
KI5
TP30
3
70
7
6
3
R5 1K
+5V
VDD
5.0V
77
TP23
C3 0.047
71
R1 1K
VDD1
3.0V
76
C2 0.047
72
S17
VDD2
1.5V
0V
73
TP32
0V
VSS
74
TEST
IC2
RST
R8 56K
3.9V
TP26
REMOTE
0V
+B
SENSOR
C1
75
OSC
TP21
1000P
5V
0V
76
76
L-RES
TP31
R10 4.7
77
L-DATA L
+5V
77
78
TP22
78
L-CE
79
79
L-CLK
80
L-DATA S
80
D22
D19
C9
0.01
Q2,3
KEY ILLUMI-
NATION SW
Q2
+B
DTC114YUA
2SC4081
DTC143TUA
UN5111
UN5114
UN5214
UN5216
2SA1036K
2SD1819A
u 1 6 3
.
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.
Q
R
2
4
9
9
IC1
IC2
Q1
Q2,3
D1-13,20
D17,18
D19
D22
ED1
KI1
KI2
TP6
KI3
40
S40
S40
39
S39
S39
KI4
38
S38
S38
37
1
5
1
5
0
S37
8
9
S37
2
36
S36
S36
35
IC1
S35
S35
34
S34
S34
LCD DRIVER
33
S33
S33
32
S32
KI5
S32
31
S31
S31
30
S30
S30
29
S29
S29
28
S28
S28
27
S27
S27
26
S26
S26
25
D7
S25
S25
5V
0V
D8
Q3
DTA114EUA
UMC2N
DTA114YUA
DTA124EUA
m
c o
S
T
2
8
9
9
: LC75883E
: RS-171
MODEL NAME
UNIT No.
D17,18
: DTA114EUA
: 2SC4081
KDC-4021 (E)
X16-1482-70
B30-1564-05
KDC-4021V (E)
X16-1482-71
B30-1564-05
KDC-3020R (M)
X16-1472-70
B30-1642-05
: B30-1605-05
KDC-4021Y (E)
∗
:
X16-1472-71
B30-1642-05
KDC-4021YV (E)
: B30-1633-05
: MA3062WA
GND LINE
∗
+B
B LINE
:
S1
TP19
TP16
TP17
TP18
S25
S14
S13
S2
TP11
4
3
S3
S24
S15
S12
S4
TP12
5
2
VOL+
S22
S5
S23
S16
S11
S6
TP13
FM
6
1
VOL-
S26
S9
S7
S27
S19
S10
S8
TP14
AM
TI
ATT
SRC
S20
4
9
8
2
9
9
S21
S18
TP15
AUD
CLK
+B
D1
D4
D9
D13
D2
D5
D20
D12
D11
D3
D6
D10
+B
KDC-4021/4021V/3020R/4021Y/4021YV (2/2)
BR24C01AF
TDA7479D
BR24C01AF-W
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