Q
S
P
R
U
T
W
V
Y
X
K
M
O
L
N
J901
J900
D901
∗
Q504
∗
Q511
∗
Q510
∗
D500
D600
Q600
Q602
Q601
Q603
D601
SW
AMPLIFIER
OPERATION
FRONT/REAR
LINE MUTE
L ch
FRONT/REAR
LINE MUTE
R ch
E-VOLUME
J400
Q402
PLL
Q401
Q400
AM NOISE CANCELLER
D400
FM +B SW
AM +B SW
D401
D603
Q606
Q605
D602
D902
Q607
Q604
Q300
INTER
FACE
BUS
D301
D300
REGULATOR
2-OUTPUT
SYSTEM-ON
SW
ILLUMINATION
DETECTOR
MUTE
DETECTOR
HANDLE
BACK-UP
DETECTOR
DETECTOR
ACC
POWER
DRIVER
ANTENNA
LPF
PLL
POWER AMPLIFIER
POWER
MUTE
Q900
BUS
POWER SUPPLY
ANT.
2/2
CN70
X14- B/2
22K
22K
10K
10K
10K
10K
10K
10K
0V
1V
10.7MHz
0V
5V
0.6/8.0V
0.4/8.0V
80mV
5.0V
5.0V
0V
3.0V
3.4V
1.2V
0V
3.4V
3.4V
0V
1.0V
7.9V
1.8V
0.4V
0.6V
4.2V
4.2V
0/8.0V
8.0V
0/8.0V
0V
0V
5V
0V
0V
2.5V
2.5V
0/4.2V
5.0V
8.0V
13.2V
0V
8.0V
0/5.0V
4.0V
4.2V
4.2V
4.2V
4.0V
4.2V
4.0V
4.2V
4.2V
4.2V
4.2V
4.2V
8.0V
4.2V
4.2V
4.0V
4.2V
0V
0V
8.0V
5V
0V
5V
0V
0V
0V
4.2V
4.2V
4.0V
4.2V
4.2V
4.0V
4.2V
4.2V
4.0V
4.2V
4.2V
4.0V
4.2V
2.8-4.0V
8.3V
0V
4.2/0V
13.2V
0V
1.4V
1.3V
0V
6.8V
1.6V
1.6V
6.8V
13.2V
0V
1.6V
0/5.0V
0V
0V
IC52
∗
IC51
IC41
IC40
∗
A400
IC30
IC20
IC90
CX-402/420 (M/J) (1/3)
A
FL+
FL-
1
3
+B
ILL
GND
2
4
H MUTE
RR-
RL-
RR+
FR-
FR+
L900
15
16
9
5
7
FR+
FL-
FL+
FR-
RL+
6
10
8
13
11
SHIELD
12
14
18
17
20
19
NA
VI GND
TUNER+B
NA
VI Rch
ACC
NA
VI Lch
H REM
RL+
RL-
RR-
RR+
+B
+B
16
18
20
19
17
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
LSELO
L
VR IN
LCT
LCOM
L
V
R OUT
L
T
IN
LF 1C1
LF 1C2
LF 1C3
NC
NC
NC
LF 3C1
LF 3C2
LF 3C3
LT
O
U
T
LF IN
LF OUT
LR OUT
LA VSS
LZCLP
DVSS
CL
DI
CE
MUTE
RA VSS
RZCLP
T1M
RR OUT
RF OUT
RF IN
RSELO
R
VR IN
RCT
RCOM
R
VR OUT
R
T
IN
RF 1C1
RF 1C2
RF 1C3
NC
NC
NC
RF 3C1
RF 3C2
RF 3C3
RT O
U
T
L5P CH
L5M CH
L4 AUX
L3 CD
L2 FM
L1 AM
L6
VDD
VREF
R6
R1 AM
R2 FM
R3 CD
R4 AUX
R5M CH
R5P CH
10u16
+
C518
C522
0.01
C520
330P
+
C519
10u16
C523
0.01
330P
C521
C526
1
0.033
C524
C525
0.033
1
C527
10u16
C528
+
10u16
C529
+
5
4
92
49
54
50
53
52
64
63
61
60
100u10
+
C557
49
50
10u16
+
C549
10u16
+
C550
3.9K
R545
3.9K
R546
18K
R549
18K
R550
R552
5.6K
2.7K
R541
52
+
C546
2.2u35
+
8.2K
R553
0.22u50
53
C540
R539
2.7K
∗
R533
10K
R534
54
∗
C539
0.022
C554
∗
C553
∗
C551
∗
C548
∗
R555
4.7u16
+
C556
60
0.22u50
+
C541
8.2K
R554
C555
0.022
∗
C552
10K
R535
C542
+
2.2u35
61
2.7K
R540
5.6K
R548
R544
R538
3.9K
18K
R537
3.9K
R543
18K
C545
10u16
+
64
63
+
10u16
C544
53
54
60
64
63
50
49
11
12
11
R+
L-
L+
1
2
GND
GND
BUS-
GND
SYS
BUS+
5
6
3
4
7
8
10
+B
ILL
+B
13
14
49
50
64
63
10
9
R-
F900
C905 0.047
C906 0.047
C907 0.047
C908 0.047
C910 0.047
C909 0.047
C912 0.047
C91
1
0.047
0.01
C900
0.01
C901
14
1K
R903
∗
R502
∗
R508
∗
C927
+
+
∗
C502
∗
C918 0.22u50
+
+
∗
C928 0.22u50
∗
C503 1u50
+
∗
R504 1K
∗
R558
+
∗
C501
∗
R507
∗
R557
∗
R500
∗
C500
+
∗
R506
∗
C916
+
∗
C925
+
14
13
12
11
10
9
8
1
2
3
4
5
6
7
∗
R503
∗
R556
∗
R559 4.7K
89
∗
C505
86
91
∗
C926
+
∗
R501
R524
47K
R526 1M
C517 0.033
∗
C915
+
∗
C917
+
∗
R523
∗
R510
∗
W502
∗
W501
∗
C512
+
∗
R515
+
∗
C511
∗
R514
∗
R516
∗
R511
∗
R513
+
∗
C513
∗
R519
∗
C514
+
∗
R520
+
+
∗
C509
∗
C510
∗
R517
∗
R518
3.3u50
C601
+
22K
0.022
R601
1.2K 1/2W
R602
R603
1.2K 1/2W
0.068
0.1
C603
19
17
14
+
C536
1u50
220P
C533
68K
R529
+
C530 10u16
R531 1M
C532
0.1
R528
4.7K
1u50
C537
+
C534
220P
R530
68K
R532 1M
C531 10u16
+
22u10
+
C538
4.7K
R527
0.1
C535
∗
W503
IC51
∗
W504
∗
R512
9
12
11
10
AF OUT
14
13
16
15
VCC
IF IN
AF AGC
8
GND
5
6
7
IF AGC
AF IN
3
4
1
2
AGC
AM+B
8
9
VDD
VDD
5
DATA
6
CE
4
3
12
11
13
14
PD
VSS
X IN
X OUT
2
1
15
16
FM+B
7
AM IN
10
1
ST IND
FM+B
L
R
2
5
FM IF COUNT
3
4
FM DET OUT
6
FM SD
FM S-MTR
7
AGC
AM IF
GND
AM AF
10
9
8
12
11
15
AMSD
AM IF COUNT
14
13
AM S-MTR
AM ANT
AM OSC
AM DX/LO
AM+B
18
17
16
19
L401
VT
FM+B
FM OSC
21
20
FM DX/LO
FM ANT
23
56uH
22
24
100K
R409
53
60
27P
C408
27P
C409
X400
R407 1K
R408 1K
R406 1K
98
99
93
R414 2.2
47K
R417
R41
1 1.8K
R410 1.2K
47K
R416
L403 4.7uH
R405 2.2K
1K
C402 220u10
+
C401 100u10
+
C403 0.01
L400
C407 0.01
C406 100u10
+
10K
R413
22K
R412
3
16
C413
0.01
R419 10K
R418 10K
81
80
79
78
4.7uH
L402
C410
0.1
C41
1
0.01
+
C412 33u10
10
11
11
10
9
9
54
C423 2200P
C422 0.033
R424 27K
R423 120K
10
R425
10u16
C424
+
0.01
C421
R426 47K
C425 0.22
100K
R422
3.3u50
C419
+
C414 0.033
C415 0.033
C416 0.068
R421 15K
C417 0.1
0.033
C418
3
16
IC41
330
R402
0.068
C404
3.3K
R401
100
R400
0.01
C400
2.7K
R403
2.2u35
C405
Q401
Q402
CLK
FM IN
100K
R415
C420
1000P
C426
47P
L404 2.2mH
R420 2.2K
87
88
18
20
16
3.3K 1/2W
R610
7.5K
R607
0.1
C605
R606
22K
R609
6.2K
20
21
R604
R605
6.2K
R608
C604
0.1
22K
6.2K
21
R906
1M
3300u16
+
C914
0.022
C913
1K 1/2W
C602
R600
C600
19
R901
10K
R145
0.022
C606
680 1/2W
47
26
8
7
6
5
1
2
3
4
23
24
25
R304 120
R303 4.7K
R305 47K
C303 0.01
C300 10u6.3
+
C302 1000P
C301 1000P
2
1
4
3
5
100u16
C202
+
100u10
+
R300
62
R302
R301
11
10
9
9
100u10
C200
+
C201
28
Q300
Q607
Q604
Q605
Q606
Q600-603
Q400
+B
+B
+B
+B
+5V
+5V
+B
+B
+5V
+5V
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+5V
+B
+B
+B
+B
+B
+B
+B
+B
+B
+5V
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+5V
+B
82K
R900
2.4K
C902 1u50
C904
22u16
0.47u50
10
11
FR-
FR-
0.01
25
CD
24
GND
16
17
FR+
23
21
FR+
RR+
RR-
19
RR-
RR+
GND
22
20
VCC
MUTE
+B
18
AUX
R904
15
RRI
13
GND
FLI
14
FRI
0.1
C903
12
SVR
RLI
+
C919
7
FL+
FL-
9
FL-
FL+
RL-
RL+
5
RL+
3
RL-
6
8
VCC
GND
4
STBY
1
TAB
2
GND
R902
+
Q900
21
100
10
9
+B
8
+
+B
100
100
Q511
0.01
C920
47K
4.7K
4.7K
24K
24K
10u16
10u16
10u16
47K
4.7K
24K
10u16
4.7K
24K
10u16
1u50
47K
47K
4.7K
1u50
47K
0.22u50
1u50
1K
47K
4.7K
0.22u50
1K
0.22u50
0.22u50
1u50
1K
0.22u50
0.22u50
47K
47K
4.7K
10A
R404
+B
+B
(X14-674x-xx)
LCD DRIVER
CN70
S710
1
S707
2
3
S703
SEL
S702
S711
4
5
6
S704
S708
TUNER
S705
S712
S706
S709
CALL UP DOWN
∗
D700
S700
EJECT
S701
PWR
ASL/
DISC
TRICK
D700
:
LC75853NE
IC70
:
∗
1/2
X14- A/2
CN10
B LINE
GND LINE
NAME
MODEL
0-21
0-22
0-01
No.
0-20
UNIT
CX-402WCVH2 (M)
CX-402W (M)
CX-402WACH2 (M)
CX-402ACRH2 (M)
CX-402A (M)
CX-402R (M)
CX-420 (J)
CX-420A (J)
750
240
240
240
R700
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
S32
S31
S30
S29
S28
S27
S26
S25
S24
S23
S22
S21
S20
S19
S18
S17
S16
S15
S14
S13
S12
S11
S10
S9
S8
S7
S6
S5
P4/S4
P3/S3
P2/S2
P1/S1
KS6
KI1
KI2
KI3
KI4
KI5
TEST
VDD
VDD1
VDD2
VSS
OSC
DO
CE
CL
DI
S33
S34
S35
S36
S37
S38
S39
S40
COM1
COM2
COM3
KS1/S41
KS2/S42
KS3
KS4
KS5
S38
S37
S36
S35
S34
S33
COM3
COM2
COM1
S40
S39
38
42
43
41
40
39
37
36
35
34
33
S23
S24
S25
S26
S27
S28
S29
S30
S17
S18
S19
S20
S21
S22
S31
S32
28
32
29
31
30
25
27
26
21
23
24
22
17
18
19
20
S15
S16
15
16
S6
S5
S4
S3
S2
S1
S14
S13
S12
S1
1
S10
S9
S8
S7
7
11
14
13
12
8
10
9
3
4
6
5
2
1
40
41
42
43
38
39
33
34
35
36
37
42
43
33
40
41
39
38
37
36
35
34
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
14 13 12 11 10 9
8
7
6
5
4
3
2
1
DO
CE
CLK
DI
ENC UP
ENC DOWN
EJECT
LED IND
VSS
VSS
VDD
ILL
+B
LAMP
+B
ILL
GND
R701 100
R704 100
R703 100
R702 100
R706
C701
C702
R705
C700
C703
R710 1K
R709 1K
R708 1K
R707 1K
64
63
62
61
62
61
64
63
∗
PL75
∗
PL72
∗
PL76
∗
PL74
∗
PL71
∗
PL73
∗
PL70
∗
R700
9
10
9
10
B30-1621-05
B30-1586-05
D700
B30-1586-05
B30-1586-05
B30-1629-05
B30-1631-05
B30-1624-05
B30-1635-05
PL70,71,73,
B30-1624-05
B30-1620-05
B30-1635-05
B30-1634-05
74,76
PL72,75
53
52
51
50
49
48
47
46
53
52
51
50
49
47
46
48
+B
+B
+B
+B
+B
68K
1000P
1000P
820P
0.1
47
+B
UP
IC70
ED70
SYNTHESIZER UNIT (X14-674x-xx) (B/2)
CX-402/420 (M/J) (2/3)
A
0V
5V
0V
2.7V
3.4V
5.0V
0V
0V
5V
0V
0V
5V
5V
0V
CX-402A/402R/402W
