Kenwood KDC-W6527SEY, KDC-W657, KDC-W6527SE, KDC-W657Y Service Manual
CD RECEIVER
KDC-W6527SE/W6527SEY
/W657/W657Y
© 2004-7 PRINTED IN JAPAN
SERVICE MANUAL
CD MECHANISM EXTENSION CORD (24P) : W05-0935-00
B53-0185-00 (N) 1813
Panel assy
(A64-3419-12) : KDC-W6527SE/W6527SEY
(A64-3420-02) : KDC-W657/W657Y
Plastic cabinet assy
(A02-2732-03)
Lever
(D10-4589-04)
Escutcheon
(B07-3120-02) : KDC-W6527SE/W6527SEY
(B07-3098-02) : KDC-W657/W657Y
Mounting hardware assy
x2
(J21-9716-03)
DC cord
(E30-6063-15)
Remote controller assy (RC-420)
(A70-2055-05)
TDF PANEL INFORMATION
MODEL TDF PANEL No. TDF NAME
KDC-W6527SE/W6527SEY Y33-1990-65 TDF-W6527SE
KDC-W657/W657Y Y33-1990-66 TDF-W657
Screw
(N09-6212-05)
Antenna adaptor
(T90-0523-05)
KDC-W6527SE/W6527SEY
BU
BU
SW5
BU5
SW3
F+/F-
FL+B
RDS
F/E
LX-BUS
DISP
OPEL-
AUX
PANELMECHA
CD
DXM6540W
INGAIN
STD
MAIN
SUB
PHONE
/NAVI
INPUT-MPX
INGAIN
+
TREBLE
BASS
VOLUME
MID
0
AUTOZER
OUT-SEL SOFT
MUTE
FRONT
REAR
NF/R
FRONT
REAR
NF
FADER
DC
DET
OFFSET
E'S LIGHT
C/R : DISCREET
E-VOL
PW-IC
PRE-OUT
PRE-OUT
SP-OUT
MUTE
MUTE
ACCACC-DET
REG.ANT-SW
SERVO
CD
REG. P-CON
REG. BU
SW BU5V
REG.
DC/DC
SW11V
FL
F+/F-
FL +B
SW5V
MECHA
PANEL
DRIVER+B
BU5V
ILL+B
A8V
CD-4.7V BU-DET
ANT-CON
SYSTEM u-COM
REMO
KEY
MATRIX
u-COM
PANEL
SHIFT
LEVEL
FL
SW
IC4
Q49,50
Q47,48
Q36
SW REG.
Q27Q25Q10,11Q7,9
IC13
IC19
Q3 Q1,2
A1
IC20 Q15,16
IC7
Q35
IC3,Q8
Q3ED1
IC1IC3
IC1
A2
IC12
IC2
Q58,59
MUTE
MUTE
Q56,57
METER
LEVEL
IC14
(E type ONLY)
(E type ONLY)
BU5
CD SERVO
MPX
AUX
CH
CD
NAVI
CH/AUX
AC IN0
AC IN1
AC IN2
AC IN3
AC OUT
SUB
IN1 : HPF
IN2 : 2ZONE
IN3 : LPF
ACIN 3+LPF
: FREE ONLY
HPF
NF
FR
NO HPF
F/R/NF
DC
MUTE L/R
FRONT
MUTE L/R
REAR/NF
R/L
R/R
F/L
F/R
MONO 2ch
PON P-CON
PON
PON CD/MD
PON
AUDIO
PWIC
POWER
DET
PON ILL
TYPE
PANEL
FL+B
2ZONE
(X34- )
(X16-251)
2
MICROCOMPUTER’S DESCRIPTION and TEST MODE.
KDC-W657/W657Y
Refer to the service manual (B53-0124-00) of KDC-W6527 for COMPONENTS DESCRIPTION,
BLOCK DIAGRAM
A B C D E
PC BOARD
1
(COMPONENT SIDE VIEW)
KDC-W6527SE/W6527SEY
KDC-W657/W657Y
(FOIL SIDE VIEW)
SUB-CIRCUIT UNIT
X16-251x-xx (J76-0026-22)
S2
D18
EJECT
C18
D1
2
3
4
ED1
5
6
D19
D14
S24
SUB-CIRCUIT UNIT
X16-251x-xx (J76-0026-22)
D17
R54
C17
13
FM
S25
AM
C16
D16
IC3
24
D2
D3
D10
D11
D12
D9
D8
D7
D4
DISP
EQ
654321
X16-251x-xx
Ref. No. Address
R21
KS3
C8
KS1
KS0
KR2
KR0
R11
R904
CP12
KR1
R20
R25
KR3
CP11
CP10
R10
RST
ATT
KS2
EB
R905
C10
R6
FLGND
214
IC3 2B
D15
CP14
RST
C15
D5
WOW CONT
CP6
IC4
R13
Q1
76
100
R29
R34
SCCON
FDC
C19
C20
75
CP8
R26
S5V
EB
C3
C5
C9
R23
Q4
31
18
169
R906
PSCL
15
J1
1
R35
C4
R24
R37
R4
SCL
R36
54
R60
C6
IC1
X1
LEVM
DGND
Q11
L2
IC2
C2
CP9
C7
R2
SREQ
PREQ
SDAWR
R9
C11
CP7
CP5
R1
ESD
R18
R14
IL+B
PN5V
Q6
Q8
Q10
Q9
EB
R17
R39
EB
CP2
51
251
R15
D901
R7
R5
R3
Q2
EB
Q3
EB
R28
R27
EB
EB
EB EB
R53
R46
EJE
50
26
R44
SRC
Q12
R38
EB
GCP
R8
CP3
C1
L1
R19
C21
PRST
PSDA
R42
R43
Q7
CP4
R12
R16
FL+B
C14
R903
X16-251x-xx
Ref. No. Address
IC1 4D
IC2 3D
IC4 3C
Q1 3C
Q2 5D
Q3 5D
Q4 2D
Q6 6D
Q7 6D
Q8 6D
Q9 6D
Q10 6D
Q11 2D
Q12 2D
S1
D6
7
SRC
D13
C13
R50
Refer to the schematic
diagram for the values
of resistors and
capacitors.
3
F G H I J
Q
5
4
KDC-W6527SE/W6527SEY
KDC-W657/W657Y
1
PC BOARD (COMPONENT SIDE VIEW)
ELECTRIC UNIT X34-3012-7x (J76-0025-22/J74-1577-02)
PRE OUT
2
W3
L301
1
3
4
24
5
6
REARFRONT
IC4
13
11 12 8 4 3 2
J3
CN6
3
R515
R514
R513
W401
C401/
C400
C319
D504
Q38
EB
1
W400
7
C402
C405
IC19
C410
C411
Q56
R469
R470
C478
R516
C409/
C412
Q57
D500
C470
W402
3
EB
EB
14
R479
8
R311
R468
R471
C511
R418
R310
51
4
C317
C467
Q404
W403
R404
R417
C507
1
R504
C451
R477
J2
R511
C
C
C406
C466
Q37
IC14
C477
R509
E
B
E
R454
R400
C430
R414
34
D503
EB
R450
R449
C523
C429
C476
33
R512
R448
R452
1576109
R451
C427
C460/W405
C521
C522
R510
C515
C404
C403
IC18
8
37
45
C435
1
R447
R446
36 25
EB
IC6
48
112
R441
C434
C433
C461
C459/W404
23
22
24
13
C449
S2
C311
C479
IC2
44
111
C480
C453 C454
1
16
X3
C458
12
C457
127
R527
C408
C407
Q53
C426
C425
C418
226
D510
D512
TH1
C520
R522
R524
R523
R525
D511
C517
C519
R529
R526
R521
R528
C516
C518
D114
D113
14
C424
SCL
R464
SDA
EB
Q55
CNVss
C203
C212
X1
C201
R284
D518
C210
C211
X2
R213
CP201
R208
R214
R215
R216
R223
L202
1
25
R225
100
CP202
IC10
CP209
R281
R231
R229
R280
5
CP208
IC1
CP203
8
R285
R239
CP204
C121
76
5026
R241
R3
75
51
CP205
Q4
L201
EB
EB
Q3
C207
CP206
D515
R4
R272
R274
CP207
R259
R253/W200
R252
R251
R250
D516
D106
R273
WH1
31
IC12
8
9
CN2
CN1
124
P1
C300
116
CN3
CD
S1
2
1
CN5
C314
C316
10
C315
D315
5
6
IC13
1
7
R309
EB
D302
122
Q44
MD
4
ONMLK
KDC-W6527SE/W6527SEY
KDC-W657/W657Y
1
9
8
5
516
R132
Q29
EB
C113
R121
D106
EB
Q27
CN7
15
R273
2
274
207
31
3/W200
2
1
0
WH1
COR
DET
4
5
J1
C112
Q28
EB
R141
R122
EB
R101
R130
Q34
EB
R102
Q35
R134
Q30
L4
R133
EB
C114
L2
C17
R103
C9
C13
16
1
C11
2
B
C1
L1
C2
Q8
E
D1
IC3
C3
GIO
Q9
R6
Q5
EB
R16
C12
D4
L3
Q16
C6
EB
C19
R10
E
C
B
C
E
R9
R20
C10
C24
R15
D7
R18
EB
IC21
GIO
D6
C14
D5
D2
R2
D3
R1
C4
1515
Q10
C21
C5
C20
IC7
Q1
Q11
Q15
R17
Q2
B
E
B
EB
E
B
E
X34-3012-7x
Ref. No. Address
IC1 5J
IC2 5H
IC3 3L
IC4 2I
IC7 4L
IC10 4J
IC12 6H
IC13 7I
IC14 4H
IC20 5L
IC21 4L
Q1 3M
Q2 3M
Q3 4J
Q4 4J
Q5 3L
Q8 2M
Q9 3L
Q10 3L
3
4
Q11 3M
Q15 3M
Q27 4K
C16
IC20
Q28 3K
Q29 3K
5
C23
Q30 3K
Q34 3K
Q35 3K
Q37 3H
Q38 3G
3
C7
2
Q44 7J
Q55 5I
Q56 4H
Q57 5H
6
A1
1
Refer to the schematic diagram for the values of
7
resistors and capacitors.
5
P Q R S T
4
C455
R
D308
KDC-W6527SE/W6527SEY
KDC-W657/W657Y
1
PC BOARD (FOIL SIDE VIEW)
ELECTRIC UNIT X34-3012-7x (J76-0025-22/J74-1577-02)
2
R131
R138
R5
R135
C118
Q36
D112
BE
D115
C119
R8
R7
C8
CC
Q6
BEE
3
EB
Q7
EBE
CC
C18
R19
CC
Q13
EBE
R12
R14
R11
BE
Q17
4
D110
R139
R128
R127
Q26
D111
BE
R116
BE
D501
D103
R129
Q33
R505
R117
R506
D105
R119
D107
R115
Q25
BE
R118
R120
D502
R508
R507
C116
Q32
R126
W2
C115
BE
D104
R270
Q12
5
R30
R25
R21
R26
Q21
6
R22
EBEBEB
Q19
R23
Q18
R24
R27
EB
R28
Q20
R29
C117
EB
R263
R261
R124
D109
R125
R123
D108
C206
R136
R262
R265
R258
Q31
R326
R332
D514
R140
C120
R264
R260
R254
R333
R331
D513
R137
R257
C321
C322
R279
R276
C205
R240
R232
85
R327
R328
C208
R211
R212
R236
R230
IC9
R282
41
R245
R278
C209
C204
R247
R277
R201
R202
R207
R217
R283
R210
R218
R226
21
34
IC11
R227
C122
C320
R329
D509
R206
R203
R330
D508
D201
C202
R224
D311
Q45
R316
Q46
D519
D507
C514
R453
R45
R445
C423
C422
C421
L401
D305
R319
EB
BE
R317
R462
R324
C420
R463
R325
C417
C483
R461
C456
R321
C
R444
C419
R322
D307
D314
D309
7
6
19
24
C420
R463
R453
C417
C483
R461
C456
R458
C431
C419
C432
R444
R440
C455
R457
R439
R438
C462
D506
R459
C428
C416
R412
R455
R442
R437
R443
C414
C415
C463
R460
R456
C413
R473
C465
R517
R411
C464
C313
C312
C513
C510
BE
R467
R478
C437
R312
BE
R474
R518
D505
Q48
R424
R466
C436
Q58
BE
Q59
D300
BE
R423
D402
R306
R318
R520
Q47
Q402
EB
Q403
CC
Q39
BE
R304
R305
BE
B
Q40
R519
C512
R410
Q50
BBE
CC
R415
BE
R475
C469
C484
R303
C308
BE
R413
R409
R416
R480
C310
C309
R407
R408
R405R406
R403
C485
R481
R422
R421
Q49
R401
R402
R313
R472
C468
D304
R420
R476
D310
R307
L306
R419
BEB
CC
R308
BEB
CC
C318
R501
D404
Q400
R220
Q401
R219
L305
C450
Q41
R502
C452
BE
R301
L303
L304
R503
BE
R222
R221
BE
R302
L302
Q43
Q42
C302
C303
D403
C301
C305
D301
C501
C509
YXWVU
KDC-W6527SE/W6527SEY
KDC-W657/W657Y
X34-3012-7x
Ref. No. Address
IC11 5T
Q6 3Q
Q7 3Q
Q12 5Q
Q17 4Q
Q18 6R
Q19 6R
Q20 6R
Q21 6R
Q31 3S
Q32 3R
Q33 3R
Q36 3R
Q39 4U
Q40 4U
Q41 3V
Q42 4V
Q43 4V
Q45 6T
Q46 6T
Q47 3U
Q48 3U
Q49 3V
Q50 3U
Q58 4U
Q59 5U
Q60 7V
1
2
3
4
5
6
R325
R321
D309
R322
D308
R323
D306
R320
D303
BE
Q60
R314
R315
Refer to the schematic diagram for the values of resistors and capacitors.
7
7
Z AA AB AC AD
KDC-W6527SE/W6527SEY
KDC-W657/W657Y
1
PC BOARD (COMPONENT SIDE VIEW)
(for KDC-W657/W657Y)
CD PLAYER UNIT X32-5500-00 (J74-1552-12)
S2
C32
C66
R68
CP11
C50
C29
C25
C67
R38
C69
CP12
1633
C27
R67
C18
C35
RFOK
C46
2
S1
R27
R66
C72
L1
CP6
3
32 17
R65
C44
IC3
CP13
48
4
CP14
CP15
C13
R49
C15
C11
5
S4
R48
C41
MIACK
C10
R47
1
6449
C37
R46
/RESET
R42
MIDIO
Q4
G
D
S
CP5
R69
R13
CP7
Q7
EB
CP3
S3
IC6
C8
R6
R12
C3
1345
CBE
BEC
C52
Q5
CP2
R50
R63
6
X32-5500-00
Ref. No. Address
IC3 4AA
IC6 5AB
Q4 5AA
Q5 5AC
Q7 5AB
7
Refer to the schematic diagram for the values of resistors and capacitors.
8
AIAHAGAFAE
KDC-W6527SE/W6527SEY
KDC-W657/W657Y
PC BOARD (FOIL SIDE VIEW)
(for KDC-W657/W657Y)
CD PLAYER UNIT X32-5500-00 (J74-1552-12)
IOP-
Vref
E
VCC
PD
C28
241
R64
Q8
EB
R36
C+D
R70
CN1
Q3
15
130
Q10
C38
C63
TE
B
FE
R43
EB
SPDL
R61
R58
C57
R45
F
T
Q9
EB
/CLK
/MUTEL
CP1
MD
FD
FCS
TRK IN
SLED IN
TRK OUT
FCS DOWN
FCS UP
D3.3V
DGND
/EJECT
SLED OUT
/LOAD
SLED
SD
CN2
C5
MOTOR
C58
R56
R53
TRK
16
R9
C7
4
5
IC5
R2
/MUTER
8EJE
LOE/LIM
D.GND
D5V
/MUTEL
R60
TD
R57
LD
DATA
LO/EJ
S.7.5V
S.GND
/MUTER
16
R62
C56
D3
3
1
LOS
1
VR
R35
C6
PON
CEB
IC4
R34
BEC
ARF
F
A
R44
C53
R40
C31
ADCIN
D.OUT
Lch
Rch
BU5V
R59
R52
RF
GND
IOP+
ATEST
C36
C34
C30
R37
D2
R22
12EJE
A.+8V
A.GND
/MRST
/MSTOP
SPDL+
R5
C48
C47
75
76
100
C21
SPDL-
/RESET
BU3.3V
C51
R51
1
C26
R29
R10
C12
LIM-SW
C55
C54
C49
R54
IC2
L2
C24
C70
R21
BEC
Q6
ECB
SEARCH
FLAGIN
R55
C22
C23
C17
R24
DAVdd3.3V
C71
IC9
C19
C9
C4
R1
/MICK
C16
CLK
X2
/STB
A0
INT
T1
T2
T3 T4
51
25
R25
1345
BU2.5V
45
IC7
31
TXD1
26
/RST
50
/MSTOP
CP10
50
MIRR
26
C14
25
R4
R3
R33
R23
D
C39
C68
R32
RXD1
Q1
C59
C62
FLAG
TX
LOCK
R31
CP16
R18
C60
C61
X1
C2
C1
C20
IC1
S
G
R39
C42
/MILP
CP4
Vref
HOLD
TZD
FZD
SDIO
LRCKIA
C64
D.GND
C43
/MIRST
RZM
/MICS
CP8
BCKIA
TXO
LZM
1
7551
CP9
SDO
IC8
C33
R17
FOGUP
100
76
R11
/BOOT
13
45
C45
R28
XI
R16
R15
R14
R7
R8
POND3.3
1
2
3
STBY
REQ
4
5
X32-5500-00
Ref. No. Address
IC1 5AH
IC2 2AG
IC4 5AF
IC5 3AF
IC7 4AG
IC8 3AH
IC9 3AG
Ref. No. Address
Q1 5AH
Q3 5AF
Q6 5AG
Q8 3AF
Q9 3AF
Q10 3AF
6
7
Refer to the schematic diagram for the values of resistors and capacitors.
9
AJ AK AL AM AN
KDC-W6527SE/W6527SEY
KDC-W657/W657Y
1
PC BOARD (COMPONENT SIDE VIEW)
(for KDC-W6527SE/W6527SEY)
CD PLAYER UNIT X32-5560-00 (J74-1599-12)
S2
CP11
S3
R6
R12
C50
CP3
BCE
ECB
C52
Q5
R50
R63
CP2
2
S1
IC14
R49
C70
IC3
C69
R48
C41
C10
R68
R47
C87
1732
6449
R144
Q12
R46
C71
1633
1
R42
C74
R129
C37
Q4
G
S
1345
C92
R122
R140
R141
C90
R128
3
CP17
R65
C44
C15
C13
R143
48
CP14
CP15
C11
R149
R11
4
CP13
5
S4
C86
R134
R135
R123
R147
EB
CP12
D
C89
R146
C27
R137
CP7
R138
C91
R124
EB
Q11
R13
R148
R145
R142
Q7
EB
6
X32-5560-00
Ref. No. Address
IC3 4AK
IC14 2AK
Q4 5AK
Q5 5AM
Q7 5AL
7
Q11 3AL
Q12 3AK
Refer to the schematic diagram for the values of resistors and capacitors.
10
ASARAQAPAO
KDC-W6527SE/W6527SEY
KDC-W657/W657Y
PC BOARD (FOIL SIDE VIEW)
(for KDC-W6527SE/W6527SEY)
CD PLAYER UNIT X32-5560-00 (J74-1599-12)
IOP-
Vref
TRK IN
TRK OUT
FCS DOWN
DGND
D3.3V
IC5
FCS UP
R9
C7
5
C5
SLD+
SLD-
SD
R56
R53
CN2
LD
Q8
12EJE
R2
/MUTER
C58
16
D3
R34
C6
34
1
LOS
DATA
/MUTEL
8EJE
LOE/LIM
D.GND
MOTOR
S7.5V
S.GND
R62
R60
TD
R57
C56
R45
C34
EB
PD
PON
LO/EJ
16
30
R44
C38
VR
C+D
R40
FE
C28
D.OUT
Q9
EB
Q10
R43
EB
R64
C47
76 50
C46
1
B
A
C53
C35
ADCIN
100
C31
C30
R36
R35
RFOK
241
/CLK
D5V
CEB
/MUTEL
BCE
Q3
IC4
E
R70
TE
C55
C51
C18
C48
R51
C49
75 51
IC2
1
R37
C26
R22
C21
R29
CP5
D2
Rch
CN1
/MUTER
CP1
15
R61
C63
MD
C57
FD
R58
1
ARF
C54
A8V
Lch
R59
R52
R55
C17
BU5V
RF
F
R54
/MRST
/MSTOP
IOP+
CP10
R130
C25
C66
A.GND
R5
GND
25
SPDL-
SPDL+
X1
26
C62
R73
C99
R10
C12
R72
R71
C39
C29
C67
C59
C60
C61
LRCK
R152
R27
TZD
FZD
IC15
R21
BU3.3V
/RESET
/SEARCH
DAC RST
LIM-SW
BCLK
C100
C93
10 1
C94
C97
BEC
ECB
DATA
FLAG
LOCK
R119
8
C75
5
C78
R109
R110
R108
R117
R132
MIRR
HOLD
D5
IC13
14
D4
C79
R118
C80
C98
6
Q6
INT
CP19
C96
5
C95
R136
TXD1
CLK
R/D1
X2
C14
25 1
26 100
/STB
/DSPRST
A0
R151
50
D
Q1
/MSTOP
R112
C82
R111
C81
14 1
C68
15 28
C20
C19
C42 C43
D.GND
C16
CP16
SCLK0
R18
/MILP
IC1
S
G
R120
R113
R115
R121
BU2.5V
CP18
/MICS
R133
CP4
C72
IC10
C64
Vref
EMPH
C83
R114
R116
C84
FOGUP
7551
DAC CLK
DAC MUTE
SDO
R139
C33
R28
POND3.3
76
/BOOT
1
2
C101
3
W10
REQ
STBY
4
CP20
5
R8
X32-5560-00
Ref. No. Address
IC1 5AR
IC2 2AQ
IC4 5AP
IC5 3AO
IC10 3AR
IC13 3AQ
IC15 4AQ
Ref. No. Address
Q1 6AR
Q3 5AP
Q6 5AQ
Q8 3AP
Q9 2AP
Q10 2AP
6
7
Refer to the schematic diagram for the values of resistors and capacitors.
11
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