Kenwood CX-403W Service Manual
CD RECEIVER
CX -403W
SERVICE MANUAL
HOND A GENUINE
© 2002-9 PRINTED IN JAPAN
B51-7968-00 (N) 1459
Knob (EJECT)
(K24-3994-04)
Knob (POWER)
(K23-1059-03)
Panel assy
(A64-2807-22)
Knob (1~6)
(K25-1518-03)
Front Glass
(B10-4293-03)
Screw set
(N99-1621-15)
Knob (CD, FM)
(K25-1338-13)
Knob (MUTE)
(K24-3766-24)
Knob (MODE)
(K24-3995-04)
Knob (A.SEL)
(K23-1059-03)
C X-403W
ANT.
TUNER
FM
AM
BLOCK DIAGRAM
44mV
LPF
IC41
AM/NC
60mV
LPF,HPF
IC52
IC90
E-VOL
POWER
AMP
IC40
PLL
CD MECHA
DXM-6033
J900
BUS
14Pin
AM
FM
CD
CD(BUS)
1200mV
ATT
2000mV
ATT
: 400Hz,30%DEP,1000kHz,74dBuV EMF
: 400Hz,22.5kHzDEV,98.1MHz,60dBuV
: 1kHz,0dB
: 1kHz,0dB
COMPONENTS DESCRIPTION
● Synthesizer Unit (X14-9160-10)
Ref No. Application / Function Operation / Condition
IC10 EEPROM
IC11 System microprocessor
IC20 2 output regulator
IC21 Reset IC
IC30 BUS I/F
IC40 PLL
IC41 AM noise canceller
IC52 E-VOL
IC70 LCD driver
IC90 Power amplifier
Q100 PON5V SW PON5V power supply
Q104 IND_LED SW ON : Indicator on
Q105 S-meter output detection
Q200,201
Q202,203
Q204 KEY_ILL+B AVR ON : Output
BU5V AVR BU5V power supply
KEY_ILL+B AVR
Key illumination power supply
AM
FM
CD
360mV
350mV
Ref No. Application / Function Operation / Condition
Q205,206
Q207
Q209,210
Q300 SYS-ON SW ACC on : ON
Q400 PLL LPF FM/AM Vt control
Q401 FM+B SW FM power supply
Q402 AM+B SW AM power supply
Q600 P-ANT DRIVE Power on : ON
Q601,602
Q603 P-ANT DRIVE P-ANT drive switch
Q604 H-MUTE detection HANDLE-MUTE on : ON
Q605 BU-DET BU detect : ON
Q606 ACC-DET ACC detect : ON
Q607 ILL-DET ILL detect : ON
Q900 P-MUTE ON : P-AMP, MUTE on
LCD_BACK_LIGHT+B AVR
LCD_BACK_LIGHT+B AVR
Illumination control SW Pulse input from a car : ON
P-ANT DRIVE P-ANT protection circuit
CD(BUS)
(VOL:MAX)
: 500mV
: 390mV
: 3200mV
: 3300mV
LCD backlight power supply
ON : Output
2
C X-403W
MICROCOMPUTER’S TERMINAL DESCRIPTION
● System Microprocessor : 703035AYGC-J10 (X14 : IC11)
Pin No. Pin name I/O Function Operating condition
1– ––
2 CD CLK O CD clock
3– ––
4 EV DATA O E-volume data
5 EV CLK O E-volume clock
6 VDD – VDD
7 GND – GND
8 P STBY O Power amplifier standby control “L” : Power amplifier OFF “H” : Power amplifier ON
9 BEEP O Beep
10 P MUTE O Power amplifier mute control “L” : Mute ON “H” : Mute OFF
11 – – –
12 LCD DI I LCD driver data
13 LCD DO O LCD driver data
14 LCD CLK O LCD driver clock
15 LCD CE O LCD driver chip enable
16,17 – – –
18 IC/VDD – Write voltage
19 H-MUTE I Handle mute “L” : Mute ON “H” : Mute OFF
20 ACC DET I A CC detection “L” : ACC ON “H” : ACC OFF
21 BU DET I Backup detection “L” : Backup ON “H” : Backup OFF
22 AUX DET I
23 BUS DI I IE bus data
24 BUS DO O IE bus data
25 SYS ON O System control “H” : ACC ON “L” : ACC OFF
26 P ANT O Power antenna control “H” : Power antenna ON
27 P-ON D O Power-on control (Digital) “L” : ACC ON “H” : ACC OFF
28 P-ON A O Power-on control (Analog) “H” : ACC/POWER/SVR ON “L” : ACC/POWER OFF
29,30 – – –
31 RESET – System reset “L” : Reset
32 XT1 – Sub system clock
33 XT2 – Sub system clock
34 REGC –
35 X2 – Main system clock
36 X1 – Main system clock
37 GND – GND
38 VDD – VDD
39~46 – – –
47 ILL DET I SMALL detection “L” : SMALL detect
48 LCD BL O LCD backlight control “H” : ACC/POWER ON “L” : Other
49 DIMMER O Dimmer control “H” : Dimmer ON “L” : Base
50 KEY ILLUMI O Key illumination control “H” : Key illumination ON
51 LED IND O LED indicator ACC OFF : Blinking (every 2 seconds) DISC-IN : ON
52 EJECT I Disc ejec t key “L” : Disc eject “H” : Other
53 ENC DOWN I Encode down
3
C X-403W
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin name I/O Function Operating condition
54 ENC UP I Encoder up
55 VDD – VDD
56 GND – GND
57,58 – – –
59 CD SW4 I CD SW4 “L” : SW ON “H” : SW OFF
60 CD SW2 I CD SW2 “L” : SW ON “H” : SW OFF
61 CD SW1 I CD SW1 “L” : SW ON “H” : SW OFF
62 CD MUTE I CD mute “L” : Mute ON “H” : Mute OFF
63 CD RST O CD reset “L” : Reset “H” : Other
64 CD STOP O C D s to p “L” : Stop “H” : Other
65 CD LO/EJ I/O CD loading/eject control “L” : Loading “H” : Eject
66 CD MOTOR O CD motor drive SW “H” : Motor dr ive “L” : Motor stop
67 CD SW3 I CD SW3 “H” : SW ON “L” : SW OFF
68,69 – – –
70 REF CON O A/D port reference voltage “H” : Vref ON “L” : Other
71 AVDD – AVDD
72 GND – GND
73 AVREF I A/D port reference voltage
74 TYPE1 I Destination setting 1 “H” : With AUX “L” : Without AUX
75 TYPE2 I Destination setting 2
76,77 – – –
78 STEREO I Stereo station detection “L” : Stereo station “H” : Monaural station
79 S METER I S-meter Level check while ASL searching. SD “H” : Read level
80 FM SD I FM-SD detection “H” : With station “L” : Without station
81 AM SD I AM-SD detection “H” : With station “L” : Without station
82 – – –
83 HANDLE I Handle remote control
84 HEAT I Heat protection detection
85 TYPE4 I Destination setting 4
86 NAVI-L O Navigation Lch audio input SW “H” : Navigation audio input “L” : Other
87 MUTE-RE O Rear L/R-ch mute “L” : Mute ON “H” : Mute OFF
88 MUTE-FR O Front R-ch mute “L” : Mute ON “H” : Mute OFF
89 MUTE-FL O Front L-ch mute “L” : Mute ON “H” : Mute OFF
90 TEST I Test mode “L” : Test mode “H” : Other
91 NAVI-R O Navigation Rch audio input SW “H” : Navigation audio input “L” : Other
92 EV CE O E-volume chip enable
93 PLL CE O PLL chip enable
94 EPR DATA I/O EEPROM data
95 – – –
96 EPR CLK O EEPROM clock
97 – – –
98 PLL DO O PLL data
99 PLL CLK O PLL clock
100 CD DATA I/O CD data
4
A B C D E F G H I J
1
PC BOARD (COMPONENT SIDE VIEW)
SYNTHESIZER UNIT
X14-9160-10 A/2 (J74-1436-12)
A400
R426
C425
R424
R423
C423
L400
124
2
C529
C524
Q607
D202
C525
IC52
EB
BE
C210
C527
C526
C528
R152
X101
5026
C531
C111
R154
75
51
ILL+B
Q204
C424
C419
C537
C115
R176
R175
R173
R172
R611
R148
C204
C530
Q105
EBE
116
C548
R533
C539
R159
R165
R163
R156
L404
C545
C544
64
49
C536
C113
EB
R150
R167
R166
R158
R209
R157
R164
R162
R160
R179
C116
C553
R539
R180
R181
R178
R177
EB
Q104
C538
R174
R555
C549
C557
R186
R185
Q207
22
R187
EBE
Q206
R216
C550
1
C118
EB
D207
C207
34
IC21
12
R217
R208
R206
R207
J400
25
C904
C925
C927
C928
C926
3
IC90
J901
4
5
C914
6
C903
224
1
W5
19
20
1
2
W14
W6
R900
TH90
C901
W7
R902
C911
C905
W3
EB
Q900
W1
R904
R906
W4
W2
D902
F900
L900
C606
R145
IC30
R901
58
D301
R302
R301
R300
J900
2468 9101214
135 11713
C402
W8
W9
W10
C902
C919
C602
R903
C601
Q600
R601
BE
R602
D601
R610
14
C300
C303
D300
7
R608
R603
R210
D600
R909 R908
R404
Q604
Q605
L401
C401
D901
D603
EB
D602
EB
R905
C202
C405
C406
IC40
1
X400
C516
C100
R104
R125
W12
R203
W11
C201
R907
15
IC20
L403
R108
58
IC10
14
R109
R107
R100
R102
R103
W13
C206
C200
Q201
EB
5V
BE
Q200
R413
916
R412
8
R117
R132
R122
R121
R124
R111
R110
R123
R115
R119
Q100
BE
C203
R204
D201
R205
Q401
L402
R133
W101
R116
R114
R112
R118
RST
GND
C412
EB
R524
C517
C522
25
X100
D200
D205
R213
Q402
EB
C519
C523
C521
17
R526
C518
32
33 48
C520
R139
R137
100 76
1
IC11
C106
VDD
W100
Q202
D206
R425
C426
C421
16 9
IC41
C420
R421
C416
C417
C418
R422
C542
CN11
D203
R214
CN10
214
RST
81
C415
C414
C541
C556
C540
C546
C211
R218
Q205
BE
113
C422
X14 B/2
D700
S712
S700
MODE
EJECT
431
ED70
PL75
PL72
S705
FM/AM
S709
TUNE/SKIP
CD/AUX
S701
POWER/VOL
S706
MUTE
6
5
4
3
2
S702
S704
S708
S711
S707 S703
S710
SYNTHESIZER UNIT
(X14-9160-10)
Ref. No.
IC Q
Address
10 5D
11 5E
20 7D
21 6F
30 6C
40 3D
41 2F
52 3E
90 3B
100 5D
104 5F
105 4E
200 7D
201 7D
202 6E
204 6E
205 6F
206 6F
207 5F
401 2D
402 2E
600 4C
604 4C
605 5C
607 6E
900 3B
1
Refer to the schematic diagram for the
values of resistors and capacitors.
65
K L M N O P Q R S T
1
PC BOARD (FOIL SIDE VIEW)
SYNTHESIZER UNIT
X14 B/2
TUNE/SKIP
S709
2
MUTE
S702
R707
S704
S711
S707
PL71
1
6
4
S703
2
S710
PL74
S708
5
R709
R708
R710
PL73
3
48
49
C702
C701
C703
3
4
5
C700
R705
S706
33
IC70
64
FM/AM
S705
CD/AUX
PL75
43 1
32
17
16
1
ED70
PL76
MODE
S712
R700
C554
R534
C551
R218
C555
R535
C552
C556
C546
Q210
D501
BE
C541
R541
C211
BE
6
R706
R703
R702
R704
R701
PL72
S701
PL70
EJECT
S700
13
214
1
14 2
CN70
POWER/VOL
113
7
X14-9160-10 A/2 (J74-1436-12)
R420
L404
C419
R537
R538
R544
R543
C538
R550
C544
C549
C204
R528
R182
C533
R183
C545
C536
R155
C112
Q209
C208
C210
C212
C117
R170
R217
EB
C542
R553
C540
R552
C209
CN10
Q205
C207
R554
R126
R130
D203
RST
C557
C550
R549
R545
D207
R540
R548
R546
A400
C413
1 24
D401
C424
R419
R527
C535
R530
C534
C537
C531
C530
C528
R531
R529
C532
R147
R146
R151
R161
R153
C110
C114
R171
R168
X101
ILL+B
BE
EB
Q203
R212
D202
R532
C108
Q202
R184
R215
C529
C106
R136
R143
R418
Q402
R135
VDD
D206
R415
R411
R417
EB
C519
C518
R129
R138
R131
C102
C104
C109
D200
D205
R414
EB
R416
Q401
L402
Q100
EB
RST
GND
R213
R409
L403
C411
C412
916
R410
R128
R120
C203
R204
W13
C205
D201
5V
EB
IC40
C206
C410
R105
R408
C407
R407
W12
C200
R406
Q200
R203
W11
C201
R405
C409
X400
R521
R522
R505
C406
18
R509
IC20
C405
C408
C516
C400
Q400
D602
SYNTHESIZER UNIT
C925
C927
C928
C938
C926
D400
J400
C920
242
C904
125
W6
W7
L400
L401
R401
R403
R402
GDS
C401
C404
R400
W8
C935
C937
W10
C403
W9
C402
C936
C902
IC90
Q603
BE
C919
W5
J901
19
20
(X14-9160-10)
Ref. No.
IC Q
20 7P
40 3O
70 5L
90 3R
100 5O
200 7O
202 6N
203 6N
205 6M
209 6N
210 5M
300 6Q
400 3P
401 3O
402 2O
Address
600 4Q
D600
R607
R606
R609
R600
R603
C600
R210
R602
EB
Q602
D601
R610
R601
Q600
EB
Q601
EB
C300
D301
C301 C302
D300
C601
W601
W4
Q300
R302
R301
C912
W3
C909
J900
C900
C910
C908
C906
C914
C907
W1
W2
1
2
W14
D902
C913
F900
L900
R303
R305
R304
BE
R901
R300
2468 9101214
135 11713
D901
D603
R605
C604
R604
C603
C605
EB
Q606
R905
R907
C202
15
601 5Q
602 4P
603 3P
606 5P
Refer to the schematic diagram for the
values of resistors and capacitors.
87
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