Kenwood CX-401-W, CX-401-WCVH-2 Service manual

©
2000-9 PRINTED IN JAPAN
B51-7680-00 (N)33
CD RECEIVER
CX-401W/WCVH2
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
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
CX-401W/WCVH2
3
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
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
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
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
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
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