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©
2000-9 PRINTED IN JAPAN
B51-7680-00 (N)33
CD RECEIVER
CX-401W/WCVH2
SERVICE MANUAL
SEEK/TUNE
CLK
SCN
PUSH
ON/MUTE
OFF
VOL
6
R
54
M
3
H
2
B.SB NR
1
PUSH
CALL UP
ASL/TRICK
TUNERDISC
SEL
MULTI CONTROL CD TUNER/ANTI-THEFT
Panel assy
(A64-2055-43)
Screw set
(N99-1673-05)
Knob (VOL, SEEK)
(K23-1049-13)
Knob (VOL, SEEK)
(K23-1049-13)
HONDA GENUINE
ACCESSORIES
MODEL PARTS No. DESTINATION
CX-401WCVH2 08A50-S5A-700 Australia, New Zealand
CX-401W 08A02-4C5-100 Australia, New Zealand
DC cord for servicing E30-4499-15
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CX-401W/WCVH2
2
CONTENTS
BLOCK DIAGRAM .........................................................................................2
MICROCOMPUTER’S TERMINAL DESCRIPTION.......................................4
ADJUSTMENT ...............................................................................................6
PC BOARD .....................................................................................................7
SCHEMATIC DIAGRAM ..............................................................................13
EXPLODED VIEW ........................................................................................21
PARTS LIST .................................................................................................24
SPECIFICATIONS........................................................................................30
BLOCK DIAGRAM
CD:2000mV
360mV
1200mV
360mV
57mV
47mV
(VOL : MAX.)
CD(BUS)
CD
FM
AM
:
:
:
:
2900mV
2900mV
400mV
450mV
400Hz, 30% DEV, 999kHz, 74dBu
400Hz, 22.5kHz DEV, 98.1MHz, 60dBu
1kHz, 0dB
1kHz, 0dB
CD
CD (BUS)
AM
FM
:
:
:
:
FM
AM
AMNC
E.VOL
LC75411ES
BUS
CD MECHA.
DXM-1040
ISO AMP
TUNER G
ANT.
AMP
14PIN
TDA7385
IC91
IC51
IC50 TA2050F
J902
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AMP
CD MECHA.
LCD DRIVER
LCD SW
SW 5V
5V AVR
DRIVER
BUS
u-COM
SYSTEM
BALANCE
Rch
Lch
ACC
BUS+
BUS-
BU
P-ANT
ACC DET
BU DET
P-ANT
AM NOISE
CANCELER
E-VOL
AM+B
FM+B
ANT
R-Rch
R-Lch
POWER AMP
PLL
LPF
FRONT-END
IC40
IC41
IND
DRIVER
LED
IC1
VOL
LAMP AVR
ILL AVR
F-Lch
F-Rch
IC91
IC50
IC10
SYS ON
IC11
IC51
H-REMO
H-MUTE
MUTE
EJECT
ENC
UP/DOWN
F-L
TA2050F
LC75853NE
SW1
SW2
SW3
DATA
CLK
MUTE L/R
M RST
M STOP
LO/EJ
MOTOR
Lch
Rch
HA12187FP
D IN
D OUT
703035AYGC-J01
R-L
R-R
HA12181FP
AM
LC75411ES
FM R
FM L
F-R
IFIN
AFIN
AF OUT
AMIF
FMSD
FM S-MTR
FM+B
L
R
ST IND
AM +B
AMSD
AM ANT
AM S-MTR
AM OSC
AMAF
AGC
TDA7385
F-L
BEEP
STBY
F-R
CE
DATA
CLK
LM7001JUM
FM+B
FM OSC
VT
FM ANT
DI
CE
CLK
DO
ILL
CLDICE
MUTE
R-R
R-L
L-
L+
R-
R+
L
R
STBY
BUS+
BUS-
AGC
FMIN
AMIN
R
L
R
L
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CX-401W/WCVH2
4
MICROCOMPUTER'S TERMINAL DESCRIPTION
System Microcomputer 703035AYGC-J01 (X14- : IC11)
Terminal description
Pin No.
Pin Name I/O Description Processing Operation
1 NC O Not used
2 CD CLK O CD clock
3 NC O Not used
4 EV DATA O E-VOL data Input select 1:AM/ 2:FM/ 3:CD/ 4:BUS
5 EV CLK O E-VOL clock
6 VDD - 5V potential
7 VSS - GND
8 CD MOTOR O CD SW for motor driver Motor ON: "H" / Motor OFF: "L"
9 CD STOP O CD stop Stop: "L"
10 CD RST O CD reset Reset: "L"
11 CD SW3 I CD SW3 detection SW ON: "H" / SW OFF: "H"
12 LCD DI I LCD driver data input
13 LCD DO O LCD driver data output
14 LCD CLK O LCD driver clock
15 BEEP O Beep output
16 CD SW2 I CD SW2 detection SW ON: "L" / SW OFF "H"
17 CD SW1 I CD SW1 detection SW ON: "L" / SW OFF "H"
18 IC/Vpp - Writing voltage
19 CD LO/EJ O CD loading/Eject control Eject: "L" / loading: "H"
20 CD MUTE I CD mute Mute ON: "L" / Mute OFF: "H"
21 NC O Not used
22 NC O Not used
23 BUS DI I IEBUS data input
24 BUS DO O IEBUS data output
25 SVR O For SVR discharge SVR discharge: "H"
26 P ANT O Power antenna control Tuner ON: "H" / others: "L"
27 NC O Not used
28 P STBY O Power AMP stanby control Power IC ON: "H" / Power IC OFF: "L"
29 P MUTE O Power AMP mute control Mute ON: "L" / Mute OFF: "H"
30 SYS ON O System control ACC ON: "H" / ACC OFF: "L"
31 RESET I System reset input Reset: "L"
32 XT1 I
Sub system clock connection terminal
32.768kHz
33 XT2 -
Sub system clock connection terminal
32.768kHz
34 REGC I Regulator connection terminal
35 X2 -
Main system clock connection terminal
6.29MHz
36 X1 I
Main system clock connection terminal
6.29MHz
37 VSS - GND
38 VDD - 5V potential
39 NC O Not used
40 PON D O Power ON (Digital) ACC ON: "H" / ACC OFF: "L"
41 PON A O Power ON (Analog)
ACC ON, Power ON : "H" / ACC OFF: "L"
42 NC O Not used
43 NC O Not used
44 NC O Not used
45 NC O Not used
46 NC O Not used
47 ILL IN I Key illumination input Illum ON: "L" / Illum OFF: "H"
48 LAMP ON O LCD back light control
ACC ON, Power ON : "H" / others: "L"
49 SRV O CD servo power conrol CD ON: "H" / CD OFF: "L"
50 NC O Not used
51 NC O Not used
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CX-401W/WCVH2
5
Pin No.
Pin Name I/O Description Processing Operation
52 TYPE 1 I Destination setting
First clock display used : "L" / not used :
"H"
53 NC O Not used
54 LED IND O LED indicator control
55 VDD - 5V potential
56 VSS - GND
57 NC O Not used
58 NC O Not used
59 NC O Not used
60 NC O Not used
61 NC O Not used
62 NC O Not used
63 NC O Not used
64 NC O Not used
65 NC O Not used
66 NC O Not used
67 NC O Not used
68 LCD CE O LCD driver chip enable
69 NC O Not used
70 REF CON O A/D port standard voltage output ACC ON : "H" / others: "L"
71 AVDD - 5V potential
72 AVSS - GND
73 AVREF I A/D port standard voltage input REF CON connection
74 NC I Not used
75 EJECT I Eject key detection
76 NC I Not used
77 NC I Not used
78 NC I Not used
79 NC I Not used
80 ST I Stereo station ST: "L" / MONO: "H"
81 S METER I S meter
82 SD I SD Station detected: "H" / Not detected
83 H MUTE I Handie mute Mute ON: "L" / Mute OFF: "H"
84 HANDLE I Handie remote control
Voltage input terminal that changes
by
the handle remote control keys.
85 HP I Temperature detection
86 NC O Not used
87 ENC UP I Encoder Up
88 ENC DOWN I Encoder Down
89 MUTE O Mute Mtue ON: "L" / Mute OFF: "H"
90 BU DET I BU detection BU ON: "L" / BU OFF: "H"
91 ACC DET I ACC detection ACC ON: "L" / ACC OFF: "H"
92 EV CE O E-VOL chip enable
93 PLL CE O PLL chip enable
94 EPR DATA O EEPROM data For code security
95 NC O Not used
96 EPR CLK O EEPROM clock For code security
97 NC O Not used
98 PLL DO O PLL data
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CX-401W/WCVH2
6
ADJUSTMENT
F
/
E
RESET
(X14 A/2)
RESET
LAND
CHASSIS
Left side view
insert a flat-blade screwdriver tip into the reset hole on the
left side panel of the set to short-circuit between the reset land
on the PC board(X14-,A/2) with the chassis(GND).
HOW TO RESET THE SET
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A B C D E F G H I J
1
2
3
4
5
6
7
78
PC BOARD (COMPONENT SIDE VIEW)
Refer to the schematic diagram for the values of resistors and capacitors.
C117
R911
R109
R4
R5
R3
R1
R2
R7
R8
R9
R6
R10
C3
C4
C2
R11
PL7
PL5
PL6
PL9
PL8
C1
13
1
14
2
R405
R403
R404
R413
R402
R400
R182
R201
R412
R206
R207
R131
R219
R130
R129
R125
R218
R215
R124
R128
R137
R135
C406
C407
R153
R162
R111
R110
C403
R115
R114
R113
R414
R99
C413
C411
C402
C401
R611
R613
R100
R134
R612
R907
R136
R602
R923
R600
R603
C923
C902
R604
C921
C916
C930
C109
C937
C931
C936
C935
C101
C201
C934
C108
C200
C100
R421
R425
C409
R415
R419
R420
C414
C105
C209
R459
R908
R460
C205
C524
C509
C511
R463
R464
C602
R462
R504
R505
R418
R507
C505
R506
R461
R466
R465
R909
R912
C928
R424
R426
R427
C211
C115
C116
C929
SDG
BE
BE
BE
BE
EB
EB
EB
E
B
BE
EB
BE
EB
BE
1
16
33
48
49
64
17
32
IC1
D402
D401
D501
D503
D502
D209
Q400
Q905
Q906
Q208
Q200
Q201
Q101
Q607
Q213
Q603
Q902
Q903
Q100
Q907
D1
S5
S6
S4
S2
S3
S10
S11
S9
S7
S8
S1
D602
CN71
ED1
IC10
Q205
Q103
Q203
Q605
Q602
IC40
Q601
Q503
Q502
Q504
Q505
IC50
IC21
Q102
IC51
IC11
IC12
IC41
Q604
Q204
D210
D403
D911
D204
D203
D213
Q403
Q404
Q904
D903
D202
D201
D200
D604
D603
D102
D103
Q600
D205
D101
D100
D207 D208
D212
D904
D214
D211
J1
A1
CN74
Q207
Q202
X14-6350-20 A/2 (J74-1074-12)
J901
IC91
D902
J902
IC20
Q212
Q217
S14
S13
X14 B/2
W103
W102
W101
C212
W100
C118
R181
R145
R920
R407
R408
R411
R409
R410
R217
R173
R174
R172
R169
R171
R175
R180
R178
R176
R177
R121
R119
R216
R122
R143
R150
R149
R144
R118
R117
R157
R158
R160
R152
R154
R161
R166
R167
R168
R164
R165
R108
R141
R151
C438
C437
R107
R608
C408
C439
R607
R138
R431
R132
R510
R910
C440
R511
C471
R155
R163
R601
C442
C441
R606
R913
C114
C113
C933
C932
R433
R434
C107
R458
C102
R509
C207
C512
R446
R447
TH1
C106
R508
L402
C938
R503
C513
R502
R500
R501
C601
R127
C525
C526
R614
R609
R610
C421
C422
X100
C423
C425
C426
C427
R140
C429
C110
C430
C433
R416
R417
R422
R423
C428
R435
R436
1
1
1
8V
5V
33
1
CBEECB
2
1
CE
RST
1
1
1
LAMP +B
ILL +B
SRV
1
1
1
R921
R922
R102
R924
R103
R925
R205
R202
R204
R213
R212
R101
R104
R105
C518
C519
X400
C903
C904
C914
C922
C405
C400
C906
C510
L401
C404
C515
C915
C516
C500
C504
C905
C913
C530
C600
C527
C501 C503 C502
C517
C528
C523
X101
C206
C103
F901
C470
C412
C435
C112
C436
C529
C410
C472
C473
C474
C475
C508
C208
C521
C522
C111
C431
C432
C434
W11
C203
C506
C202
C210
C204
R605
C912
R214
W10
W2
W6
W4
W5
W3
W9
W1
W7
W8
5
4
135
23
TUNER
EJECT
DISC
ASL/TRICK
SEL
1
PL10
1
PL1
PL2
L403
L404
C901
L901
B
C104
6
BE
BE
BE
BE
B
E
B
E
BE
BE
B
E
BE
224
25
2
19
20
EB
268
71113
14
5
BE
EB
124
POWER
UP
DOWN
CALL UP
113
14
10
20 11
23
11 1
34
44
22
12
8
916
100
25
75
51
76
50
26
4
5
8
8
916
4
85
2
34
E
E
EBE
EB
BE
BE
EB
IC Q
15I
10 6C
11 5F
12 4F
20 7D
21 6F
40 2D
41 2F
50 5D
51 3E
91 3B
100 5F
101 4F
102 5F
103 5G
200 3G
201 3F
202 3F
203 4G
204 3G
205 6F
207 3F
208 3F
212 7E
213 7E
217 7F
400 2D
403 2E
404 2E
502 4D
503 4D
504 3D
505 3D
600 6E
601 6D
602 6E
603 5E
604 6E
605 5E
607 6E
902 6C
903 5D
904 4D
905 5C
906 4D
907 2C
X14-6350-20