Kenwood KDC-4551UB/455UW User manual

This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
SERVICE MANUAL
KDC-4551UB/455UW
KDC-4651URY
KDC-U449/U5049
CD RECEIVER
© 2010-12 PRINTED IN JAPAN
B53-0835-00 (N)223
TDF SPARE-PANEL
MAIN UNIT NAME TDF PARTS No. TDF NAME
KDC-4551UB Y33-3382-71 TDF-4551UB
KDC-455UW Y33-3382-72 TDF-455UW
KDC-4651URY Y33-3382-73 TDF-4651URY
KDC-U449
KDC-U5049 Y33-3383-01 TDF-U5049
KDC-U449 : Panel assy (GE20277-007A)
KDC-4451UB : Panel assy (GE20277-001A)
Y33-3380-21 TDF-U449
KDC-U5049 : Panel assy (GE20277-010A)
After replacing E2PROM (IC771 on X34), tuner setting adjustment is needed.
The adjustment is that to perform the “TUNER Setting Adjustment Mode” (Page 5)
in the “Tuner Test Mode Specification” of “Production Test Mode”.
Tuner setting adjustment after replacing E2PROM
Mounting sleeve assy
(GE34134-001A)
Hook
(GE40510-001A) x2
* Car cable
(QAM1341-001)
* Screw set
(N99-1757-15)
* Carrying case
(W01-1710-05)
* Car cable
(E30-6937-05)
* Tap screw (2x8)
(N80-2008-43)
* Hard case assy
(A02-2757-13)
* Remote control unit (RC-405)
(A70-2104-05)
Trim plate
(GE20274-001A)
KDC-455UW : Panel assy (GE20277-002A)
KDC-4651URY : Panel assy (GE20280-015A)
* Depends on the model. Refer to the parts list.
KDC-4551U KDC-455U
KDC-4651U KDC-U449
KDC-U5049

2
KDC-4551UB/455UW/4651URY KDC-U449/U5049
BLOCK DIAGRAM
1
BU DET
PHONE
RESET
9
5
9
BU DET
1
2
MUTE
R902,903
12
2
1
1
111
D891
2
FL+B
PS1-1 / PS1-2 / PS1-3
ACC5V / BU-DET
PS2-1 / PS2-2
PHONE
PS1-1 / PS1-2 / PS1-3
PS2-1 / PS2-2 P-ANT
P-CON
SP-OUT
PHONE
ACC
BU
5
SW3.3V
SW3.3V
PON-FL
1
8
ACC5V
PANEL3.3V
CD1.5V CD3.3V
22
FL+B
3
2
2
FL+B
E-VOL
IC161
A9V
SYSTEM u-COM & USB HOST
∗Q321,341
PHONE
Q970
BU DET
Q971
SW 3.3V
Q951,952
IC501 AUDIO
CD
BU5V
SW5
(REMO DRV)
RESET IC
IC702
ILLUMI+B
CONNECTOR
RESET SW
REMO
FL
IC701
IC301
IC602
CN901
ILLUMI+B
EN601 FL601
∗J321
MUTE
∗Q780
IC1
Q701
VDD3.3V
to GND
S701
CN601
A9V
ANT
E2PROM
BU3.3V
F-AUX
J602
PANEL DET
IC901
CN701
SW3.3V
IC771
TUNER
ROTARY
ENCODER
KEY
ILLUMI
(FL FILAMENT)
RESISTOR
KEY
MATRIX
MOTOR
DRIVER
IC
SUPPLY
POWER
DC-CN etc
MUTE
RCA
AMP
POWER
RCA-OUT
DET
SURGE-
DC-CN
BU5V
SERVO IC
(OASIS)
IC540
CD 3.3V
CD 1.5V
IC530-532
BU
BU3.3V
ATOMIC
(OE REMOTE)
EXT REMO MECHA
CD CD3.3V
to MECHA
J1
BU3.3V
to DC
CONNECTOR
PANEL3.3V
CD
BU3.3V
BU5V
LOAD
SW3.3V
IC931
BU3.3V
SW 3.3V BU5V
PANEL SW3.3
Q602
BU3.3V
BU5V
USB5V
CP
i-Pod
IC80
SW3.3V
SW
HI-SIDE
USB5V
(DC/DC)
IC981
IC961
USB5V
USB CN
CN603
ELECTRIC UNIT (X34- )
SWITCH UNIT (X16- )

3
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
1. Panel
ACCENT
SEARCH
RETURN VOL
2. How to enter each Test Mode
Test Mode name Operation
Production Test Mode Press and hold [1] key and [3] key and reset.
Service Test Mode In the STANDBY source, while pressing and holding [2] key, press [6] key for 7 seconds.
(Starting to press [2] key and [6] key at the same time can not be entered into the mode)
DC Error Information Mode Press and hold [3] key and [6] key and reset.
✳Transition to Test Mode shall be available during DC Error detection.
3. How to release each Test Mode
• Reset
• Momentary voltage drop
• ACC OFF
• POWER OFF
• Panel Detach
4. Production Test Mode
●Default status immediately after the mode activation
It shall be same as normal RST start in other than the below setting.
Details
Difference in action
Period to prohibit TEL/LINE MUTE immediately after activation
(normally 10 seconds) 1 second
Mecha Initialize Action Prohibited
Write-in to E2PROM when detecting a DC error Prohibited
Demo Mode ON/OFF Setting Menu Prohibited
Power supply during ACC OFF (Back Up On) MUTE terminal turns OFF after 2 seconds
BEEP sound Beep with short-pressing in any functions
Various setting value
Volume 30 (-10dB)
BASS BOOST/LOUD OFF
EQ NATURAL
Fader/Balance Center
DEMO Mode Setting OFF
AUX Setting ON1
NAVI MUTE Setting for Japan Detecting function valid (ATT)
TEST MODE

4
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
●Mode structure
Some Test Modes change according to the current source.
The following table shows the current source in Set and the related test mode status.
KWD model source Test mode
POWER OFF -
Standby STANDBY Test Mode
TUNER TUNER Test Mode
CD CD Test Mode
USB -
AUX -
●Mode content
Syscon shall display the following information after entering this mode. The operation shown below shall be workable.
Display content Details
PRO TEST The display is released when another operation is executed.
The display will blink if sub clock is not functioning.
●STANDBY Test Mode Specification
Operation Display content Details
1 (Toggle)
Syscom version display SYS0∗–∗∗∗Syscom version (Refer to Syscom Version Table)
All lights ON All lights ON (Switch to other display)
2 (Toggle)
Serial No. display SN :00000000Serial No. display (8-digit)
✳Display as it is in hex
All lights ON All lights ON (Switch to other display)
3 (Toggle) All lights ON/OFF All lights ON/OFF with toggle
4 (Toggle)
Information display iPod
verification IC mount
status display
iPod :
iPod :OK
iPod :NG
iPod :
∗∗
iPod verification IC mount status display
Blank: Verifying
OK: Verification IC mounted
NG: Verification IC not mounted
∗∗: Non-iPod support model
All lights ON All lights ON (Switch to other display)
5 (Toggle) Preout switch SWP R E R E A R
SWP R E S UB –W
Switch Preout with Toggle
(1Preout/2Preout model only)
6 (Toggle) All lights ON/OFF All lights ON/OFF with toggle
SOURCE
Transition Mode release Return to Normal mode
■RETURN Mode release Return to Normal mode
●Tuner Test Mode Specification
The following displays shall be indicated according to the TUNER status.
Status Display content Details
TUNER IC
Communication error TUN CON NG Communication to TUNER IC not available (indicated unless
the mode is in Clock Display Mode).
TEST MODE

5
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
Status Display content Details
Adjustment not
implemented ∗ERR∗A97.9A
For models that TUNER adjustment is necessary but not done
(adjustment value: 0x00 or 0xFF), the following TUNER Test
Mode functions are valid (“∗ERR∗” display is continuing).
Display “∗ERR∗” blinks with 250ms interval.
RDS Specified data
reception RDS TEST Turn OFF P-CON forcibly if PS=RDS TEST is received.
P-CON recovers with Power OFF/ON.
Operations
Operation Display content Details
ACCENT TUNER IC
display ATOM RDS Display TUNER IC version
✳Display content is assigned by Tuner Development G.
4 Preset operation FM1 – 3 A 9 7.9 A Switch to either 98.3 (except for J type)
BAND BAND switch
operation FM1 – 3 A 9 7.9 A Execute Band Switch as shown in the following table
every time Band key is pressed in each type.
SEARCH S meter voltage
judgment display
S–MTR xx:OK
S–MTR xx:NG
S–MTR xx:––
S meter value xx: Current S meter value
Determination result OK: Within S meter voltage spec
NG: Out of S meter voltage spec
– – : No LEVEL OFFSET adjustment
■DISP Shift to TUNER
setting mode
Transit to TUNER setting adjustment mode after switching
to 98.3MHz
Frequency: 98.3MHz, Modulation frequency: 1kHz,
Modulation mode: MONO, Modulation: OFF,
Deviation: 40kHz, ANT input level: 34dBμV
TUNER Setting Adjustment Mode
1. Operation (Operation after performance of above-mentioned “Shift to TUNER setting mode” item)
Operation Display content Details
■BAND
(Toggle)
AUTO Adjustment
Mode A S–xx L–xx
Select TUNER adjustment method (A: AUTO) us-
ing BAND key.
S-xx: Current S meter value (Hex)
L-xx: Level offset value (Hex)
✳In case that the level offset value is not ad-
justed (0xFF or 0x00), display “– –”.
2. Operations in AUTO Adjustment Mode
Operation Display content Details
VOL PUSH Adjustment start A S–xx L–xx
Start Adjustment (Start Auto adjustment, and
transit to Success/Failure display depending on
the adjustment result)
3. Status display during adjustment
Status Display content Details
Adjustment success ADJ OK :x x When the adjustment value write-in to E2PROM (IC771 on X34)
has been completed. xx: Level offset value (HEX)
Adjustment failure ADJ NG When the adjustment value write-in to E2PROM (IC771 on X34)
has failed.
TEST MODE

6
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
4. Operation of return to TUNER Test Mode
Operation Display content Details
RETURN Mode release Return to TUNER Test Mode.
●BAND switch list
Type BAND1 BAND2 BAND3 BAND4 BAND5 BAND6 Details
EqFM1 FM2 FM3 wMW/LW - - q→w→q…
M/C qFM1 FM2 FM3 wMW eSW1 rSW2 q→w→e→r→q…
●CD Test Mode Specification
It shall be the same as normal RST start in other than the below setting.
Content Details
Playback track from top No.9
Default for Display mode Play time
Operations in CDDA playback
Operation Display content Details
Special track up
Pressed Track up depend on different cases.
Case 1: Track>23 No.9→No.15→No.10→No.22→No.12
→No.13→No.14→No.9
Case 2: Track<8 No.1→No.2→No.3→Until Last Track
Case 3: 8<Track<22
No.9→No.15→No.10→Until Last Track
Special track
down One-by-one Track down by sequence follow Track No.
1
(Toggle)
HC1/2 Judge-
ment Information
Display
CD HC1
CD HC2
CD ∗∗∗
HC1/2 Judgement Infomation.
HC1: HC1 mecha (for this model)
HC2: HC2 mecha
∗∗∗: Impossible of Judgement
Normal Display C D 0 1: 1:2 3 Normal Display
3Special jump
operation
Jump to No.28
(Scratch 0.7mm for MUSIC line vibration test)
4Special jump
operation Jump to No.14 (Damaged disc TCD-731RA Tr14)
5Special jump
operation
Jump to No.15
Set Volume value at 26 (for error operation FCT check of
20Hz 0dB DC protection)
6Special jump
operation
Jump to No.9 if the other than track No.9 is playing.
Jump to No.22 if the track No.9 is playing.
5. Service Test Mode
●Default status immediately after the mode activation
It shall be same as the normal activation.
●Mode structure
Service Test Mode is enabled only STANDBY source.
TEST MODE

7
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
●Mode content
Syscon shall display the following information after entering this mode. The operation shown below shall be workable.
Display content Details
SRV TEST The display is released when another operation is executed.
●Common operation mode for only STANDBY sources
Operation Display content Details
1Development name
status display 1011WE –200Development name – Version (Micom)
3Power ON duration
display
PONTM 0Hx x
00~50 are displayed in “xx”.
For less than 1 hour, the display is indicated per 10
minutes.
PONTM xxxxx00001~10922 are displayed in “xxxxx”.
MAX 10922 (hours)
4Disc action duration
display
CDTM 0Hx x
0~50 are displayed in “xx”.
For less than 1 hour, the display is indicated per 10
minutes.
CDTM xxxxx00001~10922 are displayed in “xxxxx”.
MAX 10922 (hours)
5Disc Eject number
of times display EJCNT xxxxxDisplay Disc Eject number of times.
MAX 65535 (times)
■5Disc Eject number
of times clear
Clear Disc Eject number of times by pressing for 2
seconds when it is displayed.
Forced Power OFF
information display
POF F – – – No forced Power OFF
POF F PN L Forced Power OFF due to Syscon-Panel communica-
tion error.
■Forced Power OFF
info clear
Clear forced Power OFF information by pressing for 2
seconds when it is displayed.
●CD Error Information Display Mode
Operation Display content Details
DISP CD error information
display mode Transit to CD error information display mode.
Move
between
BAND
(Forward
search)
items with
/
CD Mech error log
display MECHA E R #:x x
Mech error history 1,2,3 (latest)
#: History No. (1,2,3)
xx: numbers of errors, “--” when there is none
CD Load error info
display LOAD ER#:x x
Load error switch 1,2
#: Switch No. (1,2)
xx: numbers of errors, “--” when there is none
CD Eject error info
display EJECT ER#:xx
Eject error switch 1,2,3,4
#: Switch No. (1,2,3,4)
xx: numbers of errors, “--” when there is none
CD time code error
count information
display (count skip)
CNT LOSE CD time code error count information (count skip)
mode display
CDDA :x x CD-DA error count numbers
xx: numbers of errors and “--” when there is none
CDROM :x x CD-ROM (compressed file) error count numbers
xx: numbers of errors and “--” when there is none
TEST MODE

8
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
Operation Display content Details
Move
between
BAND
(Forward
search)
items with
/
CD time code error
count information
display (no count
update)
CNT S T AY CD time code error count information (count not up-
dated) mode display
CDDA :x x CD-DA error count numbers
xx: numbers of errors and “--” when there is none
CDROM :x x CD-ROM (compressed file) error count numbers
xx: numbers of errors and “--” when there is none
■DISP CD error information
clear CD error information all clear
DISP Mode release CD error information display mode release
6. DC Error Information Mode
●Default status immediately after the mode activation
It shall be same as normal activation.
●Mode structure
DC Error Info Mode is enabled regardless of current source.
●Mode content
Syscon shall display the following information after entering this mode. The operation shown below shall be workable.
Display content Details
DCERR When DC error is detected (in case that one of capacitor leakage, wrong connection or
other detection is found)
DC OK When DC error is not detected (in case that none of capacitor leakage, wrong connec-
tion or other detection is not found)
●Mode operation specification
Operation Display content Details
1 DC ERR1 display
DC1 ERR When wrong connection & DC error in other detection
duration is detected
DC1 OK When wrong connection & DC error in other detection
duration is not detected
■1 DC ERR1 clear DC1 OK
Clear detection information when wrong connection &
DC error in other detection duration is displayed. (Clear
data flash)
2 DC ERR2 display DC2 4 Display detecting number of times in capacitor leakage
detection duration (0~4)
■2 DC ERR2 clear DC2 0 Clear number of times for detection information in ca-
pacitor leakage detection duration. (Clear data flash)
7. FM/AM Channel space switching (Except models for destination “E”)
Procedure Note
While Power OFF, pressing and holding [1] key and [5] key, and press [SRC]
key to Power ON. FM200kHz/AM10kHz ↔FM50kHz/AM9kHz
TEST MODE

9
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
Refer to the schematic diagram for the values of resistors and capacitors.
CN101
CN102
SW4
SW3
SW2SW1
R1
SL1
15
1
B1
SL2
26
SP-
SP+
FE-
WHT
LO-
LO+
WHT
YEL
RED
BLK
YEL
FE+
ORG
ORG
REST
MGND
1
CD PLAYER UNIT
X32-6430-00 A/2 (LVB11003-001A)
X32 B/2
PC BOARD (FOIL SIDE VIEW)
EDCBA
1
2
3
4
5
6
7

10
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
PC BOARD (FOIL SIDE VIEW)
Q321
Q251
D251
D321
D2
D1
Q341
D341
IC1
IC580
D102
D112
D540
D113
IC540
IC501
Q540 IC80
D11
0
D502
D503
D100
D101
Q782
Q971
Q970
Q951
Q780 Q781
IC771
IC9
3
IC531
IC532
IC530
D781
D780
D782
D301
D970
D971
D132
D783
IC161
C253
R347
R349
R461
R257
R343
L10
R9
R10
C2
C6
R2
C1
C29
C27
R3
C12
C11
R6
R7
R324
R310 R400 C317
R1
R333
R168
C168
R477
R320
R373
R342 C341
R341 R332 R351
R321
C321
R255
R253
R252
R251
C26
C28
R323
C17
R4
C18
R11
C16
C19
C22
R5 R8
R165
R163
R161
R167 R162
C308
C307
C319
C318
L161
C166
R334
C170
C171
R340
R322
C254
R258
R330
R331
R353
R254
R256
C331
R352
R350
TH301
R303
R304
C313
C316
C169
C351
R305
R780
C314
R781 C311 C312
R307
R357
R358
C315
C305
R783
C178
C306
R481
R974 R971
R970 R451
R306
R446
R444
R443
R422
R972
R976
R401
R491
R447
R302
C540
C541
R574
C570
C568
R463 R530
R409
R408
R570
R465
R466
R464
C574
C573
R973
C954 R48
4
R445
R439
R742
R744
R471
R418
R440
C714
R7
4
C727
R754 R753
R778 R904
R779
C931
R975
C723
R479
R450
R701
R718
R426
R787
R405
C572
R573
C571
C535
C532
C533 C530 C531
C569
C567
R572
R571
R739
C534
R784
L4 C20
R544
R542
R541 C548 C549
C545
C544 C543
C177
R478
R404
R723
R417
C8
C21
C10
C3
C4
C7
C5
R591
R579 C587 R592 R599 R529 R587 R588
C595
R589
R590
R594
R403
C546
C547
C542
R540
R402
R543
R416
C592
R595
C23
C13
C14
C15
R432
R722
L11
L12
R726
C161
C173
C575
C576 R545
R549
R512
R548
R412
R411
R519
R520
R546
R585
R580
R528
R575
R490 C102 C101
R468 R550
R413
R414
C512
C508
R547
C557 R467
C556
R410
C505
R516
C552
C558
C554
C555
C594
R593
R597
C585
R598
R581
R582
C582
R596
R459
R576
C509
R534
R502
R503
C503
R501
C510
C511
R577
C111
R583
R584
C593
C553
R406
C588
C583
R586
R513
R507
C517
R532
R531
C559
R508
R509
R551
R552
R505
R511
C516
C504
R517
C501
C551
C550
C515
R506
C507
R514
C513
C560
C506
R510 R518
C518
R515
R504
R728
C563 C596
L531
R708
R713
R715
C110
C706
R110
R102
R100
R82
C80
R462
R554
R555
R752
R431
R492
R736
R735
R751
R745
R749
R750
R111
R101
C100
R415
R429
R430
R428
R561
R564
R563
R562
R556
C562
L561
L562
C561
R553
R533
R485
R568
R567
R566
C566
R565
L563
C565
C564
R557
R558
R569
L565
L564
R740
C713
R727
R731
R560
R559
R741
CBE
EBC
CBE
EBC
CBE
EBC
EB
EB
EB
EB
EB EB
16
1
85
1
1
40
1
34
21
34
21
34
21
34
21
80
41
60
61
21
20
14
85
18
36 19
4
32 17
50
51
1528
141
41
58
C368 J321
CN502 S701
J1
IC301
D901
PRE OUT
ANTENNA
B313
B521
B314
B170
B311
B186
B187
B189
B190
B191
B542
B2
B551
B532
B533
B534
B535
B536
B537
B762 B539
B540
B541 B761
B760
L702
B538
X540
B3
X1
B793
B792
B791
B790
B789
B188
B301
B192
L8
L1
L9
L2
L5
L6
L7
L3
B163
C309
B309
B310
B164
B165
B166
B167
B169
B171
B172
B173
B174
B543
SN
RST
SWDIO
S
W
SDA
SCL
B175
B176
B177
B178
B179
B180
B182
B181
B183
B184
B185
B503
B527
B528
B529
B552
B531
B4
B5
B168
B315
B306
B921
B920
B919
B305
B304
B303
B302
B307
B308
B933
B908
B925
B912
B901
B911
B924
C320
25 1
24 2
L901
C340 C252
C330
C251
C160
C901
C172
C932
C24
C25
C586
C591
C590
C584
C174
C162
C514
C350
C310
1
2
25
26
ELECTRIC UNIT
X34-691x-xx
(GEB10301-201A)
FGHIJ
1
2
3
4
5
6
7

11
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
Refer to the schematic diagram for the values of resistors and capacitors.
ONMLK
1
2
3
4
5
6
7
X34-691x-xx
Ref. No. Address
IC1 4G
IC80 6J
IC161 3H
IC301 2I
IC501 6H
IC530 4J
IC531 4J
IC532 4J
IC540 5I
IC701 5K
IC702 5L
IC771 4J
IC901 3M
IC931 3K
IC961 4L
IC981 4L
Q321 2G
Q341 2H
Q540 6G
Q701 6M
Q780 4I
Q781 3I
Q782 4I
Q881 3K
Q951 4K
Q952 4K
Q970 3J
Q971 4J
Q981 4L
0
D110
D111
D100
D101
Q952
D891
Q951
Q701
IC981
IC931
IC961
IC702
Q881
D982
Q981
D983
D704
D981
D941
D902
D123
D120
D121
D130
D852 D851
D942
D131
D720
D719
IC701
R424
C914
5
1
C891
R894
R882
R444
R443
R893
R906
C902
R941
C942
R777
R851
R788
R965 R982
R983
C982
R480
C990
R482
C984
L985
C988
R981 R987 C912
R907
C131
R132
C132
R122
C130
R131
R121
C120
C983
C905 R908
R909
R452
R493
R455
R962
C981
C987
L982/R988
C985
C989
R747
C941
C911
C909
R454
R453
C908
R130
R120
C121
C122
R484
R445 R881
R433
R475
R486
R435
R436
R746
C717
C715
R469
R474
R473
R724
R762 R449
R704
C731
R774
L703
R439
4
2
4
4
C703
R440
C714
R743
R425
R423
R891
R441
R442 R883
C933
C931
R494
R952
R951
R892
R985
R986
R785
R437
R438
R770
R701
R738
R730
R420R419
R720
R706
R712
R703
R725
R772
R702
R434
R773
R771
R427
R421
R470
L983
R961
R457
R456
R102
R100
8
2
C80
C718
C702
R752
R431
C701
R751
R756
C708
R786
C711
R112
C112
R448
C728
R750
R790
R757 R495
R789
C705
R429
C712
R782
R721
R430
4
0
1
3
R741
C716
R776
R775
R483
R737
C733
R488
L101
C722
R922
R487
L102
C726
R963
C730
R769
R732 R768
R763
R766
R764
R767
R765
R472
C729
R759C732
R758
EB
EB
EB
EB
EB
12
43
34
21
4
5
50
51
80 81
100
1
3031
41
58
13
54
C851
C724 C725
CN701
CN901
J120
IC901
B763
L702
B764
B766
B767
B768
B789
B788
L701
B787
B786
B785
L981
C962
R901
S
WDIO
SWCLK
VDD
TEST2
TEST1 GND
B784
B783
B782
B781
B779
B780
B778
B777
B776
B775
B774
B773
B772
B771
B765
X701
X702
R902
R903
B922
B907
B906
B905
B933
B911
B924
B910
B909
B904 B903
B902
B913
B914
B915
B916
B917
B918
C913
9
8
16
1
15
1
14
2
L901
C881
C910
C907
C906
C904
C903
C704
C963
1
2
19
20

12
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
Refer to the schematic diagram for the values of resistors and capacitors.
D665
D664
FL601
D659
D671
D652
D653
D670
D654
D655
D667 D669
D680
CN603
D668
S612S613
S614
S607S608
S609S605
S606
S604
S616
IC602
EN601
S603
S615
S611
S610
S602
J602
D651
D656
D666
D679
D677
D678
D673
D662
D675
D676
D672
D660
D663
D674
D661
D658 D657
SWITCH UNIT
X16-704x-xx (GEB10302-002A)
R665
R651
R653
R650
R652
BAND
C656
VCC
GND
OUT
C641 R674
C654 R675
R673
C651
123 45 6
DISP
SRC EJECT
AUX
ENCODER
(ACCENT)
50
1
14
R654
Q602
Q603
Q663
Q664
Q612
Q610
Q611
Q613
D686
D684
D683
D685
Q661
Q662
D601
D604
D603
D602
D605
D606
D608
D607
CN601
SWITCH UNIT
X16-704x-xx (GEB10302-002A)
TL626
TL625
TL627
TL624
TL621TL623
TL622
R639
R670
R657
R614
R613
C611
C612
R671
R681
R682
LF601
R669
C681
C682
C664
R676
C685
D688
R659 R648 R672
R635
R634
R668
TL629
R626
R665 R666
R621
R628
R677 R627
R667
C694
R656
R636
C693
C614
C616
C615
R615
R645 R640
R612
C684
R686
R685
C683
R683
R687
C672
C671
R611
C610
R610
R643
R644
R642
R641
C618
C617
R637
R638
R658
R625
R623
C621
2
20
1
19
R661
R662
R660
R663
C691
R620
C692
TL628
R619
R617
C642
R622
BE
E
EB
EB
EB
EB
B
EB
EB
EB EB
PC BOARD
(COMPONENT SIDE VIEW) (FOIL SIDE VIEW)
PQRST
1
2
3
4
5
6
7
X16-704x-xx
Ref. No. Address
IC602 6P
X16-704x-xx
Ref. No. Address
Q602 5S
Q603 5S
Q610 4S
Q611 4S
Q602 5S

13
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
X32-6430-00 (1/1), X34-691x-xx (1/4)
ABCDE
1
2
3
4
5
6
7
CAUTION : For continued safety, replace safety
critical components only with manufacturer’s recom-
mended parts (refer to parts list).
Indicates safety critical components. To reduce the
risk of electric shock, leakage-current or resistance
measurements shall be carried out (exposed parts are
acceptably insulated from the supply circuit) before
the appliance is returned to the customer.
• DC voltages are as measured with a high imped-
ance voltmeter. Values may vary slightly due to
variations between individual instruments or/and
units.
1
1
1
1
2
2 2
3
3
3
4
4
4
3
4.6V 1.6V 3.2V 4.7V
1.6V
1.6V
0V 0V
7.1V 5.0V 5.0V 3.5V 3.0V 3.2V 3.2V 3.5V 7.2V
3.2V
3.0V
3.3V
3.3V
2.2V
0V
3.2V
0V
1.6V
1.9V
1.6V
1.9V
1.9V
1.9V
1.6V
0V
0V
1.5V
0V
1.6V
1.6V
0
1.6V 2.0V 1.6V 3.2V 1.5V 1.6V
0V
1.6V 1.5
V
0V
3.3V 1.5V 0V 3.3V 1.5V 1.6V 1.5V 1.7V 1.0V
1.6V
0V
0V
0V
3.0V
1.9V
2.4V
1.6V
0.7V
0V
0V
0V
1.6V
(X32- ) (B/2)
CD PLAYER UNIT (X32-6430-00) (A/2)
OPTICAL PICKUP
IC501
IC540
IC530
IC531
IC532
ELECTRIC UNIT (X34-69xx-xx)
DPU1 (X92-)
CN102
SPINDLE
MOTOR
MOTOR
FEED
LOAD
MOTOR
SW4
REST
SW1
SW2
SW3
TRACKING
COIL
COIL
FOCUS
CN502
D502
D540
DM1 (X92- )
DM2 (X92- )
DM3 (X92- )
CN101
Q540
BTL
SERVO
CD 3.
3
CD 1.
5
CD 1.
5
M
M
M
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
VF2
VCC
VT2
LD
GND
VT1
VC
MD
VR
VF1
GND
TRK-
TRK+
FOCUS+
FOCUS-
VT1
VC
MD
TR-
TR+
FO+
FO-
SL1
SP+
SP-
FE-
FE+
LO-
LO+
REST
SW1
SW2
SW3
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
VT1
VC
MD
TR-
TR+
FO-
FO+
FE+
FE-
SP-
SP+
LO-
LO+
REST
SW1
SW2
SW3
SL2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
VF2
VCC
VT2
LD
GND
VT1
VC
MD
VR
VF1
GND
TRK-
TRK+
FOCUS+
FOCUS-
5 4 3 2 1
6
7
8 9
10
0.1
1
0.1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
VF1
SW3
VCC
SW2
VF2
SW1
VT2
PSW
VT1
VREF
MD
MGND
LOADING-
LOADING+
SPINDLE+
SPINDLE-
FEED+
FEED-
GND
LD
GND
TRACKING-
TRACKING+
FOCUS-
FOCUS+
36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
S-GND
VCONT
MUTE1
MUTE234
VIN4-
VIN4
VREF-IN
VREF-OUT
REG-OUT
REG-IN
VIN+OP
VIN-OP
VO-OP
VIN3
VIN3-
VIN2
VIN2-
VIN2+
1
2
3
4
5 6
7
8 9
10
11
12
13
14
15 16
17
18
FWD REV VCC2 VLO- VLO+ VO4+ VO4- VO3+ VO3- VO2- VO2+ VO1- VO1+ VCCP1 VCCS VIN1+ VIN1- VIN1
66 65 100
R502
R503
100
LO-
LO+
SP+
SP-
FE+
FE-
FO+
FO-
TR-
TR+
0
R515
R514
R504 R508
8.2K
51K 0
GND
37
0.1
100u10
C514
C513
C512
470P
C511
470P
R513 R510
8.2K
R516 R505
22K
R511
0
0
R507
0
R509
11K8.2K
R512R517
8.2K
R506
6.8K 0
R520
10K
C504
0.1
26 29
31
27
68K
R519
33K
R501
0.1
C503
R518
100
38
GND
80 79 78 77 76 75 74 73 72 71 70 69
68
21
22
23
24
25 26
27
28 29 30
31
32
33
34
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
VCOF
PVREF
LPFO
LPFN
TMAX
PDO
VDDM1
SRAMSTB
VSS-1
VDD-1
TEST
RST
FSMONIT RFZI RFRP TEI AVDD3 FOO TRO VSS-3 FMO FMOS DMO VDD1-3 PIO8
VCOI
RVDD3
SLCO
RFI
RFRPI
RFEQO
DCOFC
AGCI
RFO
RVSS3
FNI2
FNI1
FPI2
FPI1
TPI
TNI
VRO
AVSS3
MDI
LDO
VF1
VF2
VT2
VT1
CD MD
R543
0
R541
0
R545
2.2M
C551
R547
R549
1K
C550 10
R548 100K
R550
4.7K
C548
68P
C549
0.1
1
C546
0.015
C547
C545 0.1
C544 3300P
C543
0.010.1
C542
C540
0.1
R540
220
2200P
C541
0.1
4.7
26
27
29
31
0.033
C552
C554
390P
C553
680P
C555 C556
0.068
0.047
C557
0
C
0.01
C574
C573 0.1
R574 15K
C572 0.015
R573 330K
C571 47P
C570 0.1 C569 0.1
52
C568 0.1
C567 1
R572 100K
55
R571 10K
GND
CTRL
2
1
VOU
VI
GND
CTRL
2
1
VOU
VI
1
2
CTRL
GND
VI
VOU
LO-
LO+
SP+
SP-
FE+
FE-
FO+
FO-
TR-
TR+
VT1
VF2
VT2
VF1
CD MD
R577
10K
C576
R575
3.3K
R576
10K
49
50
51
48
68
R1 130
B1
0
VREF
VREF
VREF
CD8V
D3.3VD3.3V
D3.3VD3.3V
D3.3V
LD LD
R551
0
R552
0
C558 0.1
1K
44
10K
R534
1500P
4700P
BU1.5V
MGND
+

14
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
X34-691x-xx (2/4)
FGHIJ
1
1
1
11
1
2
2
2
5
5
5
88
9
5
12
22
2
9
9
9
6
6
6
6
5
12
8
8
7
0V
3.8V 3.8V
0V
3.6V
6.2V 6.2V 0V
5.1V
3.9V 7.1V 8.5V
0V
2.2V 5.6V
3.1V
3.3V 1.0V
3.3V
4.7V
2.2V
1.5V
1.5V
2.2V
0V
6
V1.5V
1.5V
3.0V
0V
3.3V
3.3V
1.3V
1.2V
3.3V 0V 3.3V 2.3V 0V 2.3V 2.3V 0V 3.3V
0V
0V
0V
8.5V
1.7V
0V
1.7V
0V 0V
3.2V
3.2V
0V
3.3V
0V
3.2V
1.3V
3.3V
1.5V
0V 0V
3.2V 2.8V 2.6V
0V
3.2V
0V 0V 0V 0V
3.3V 3.3V
0V 0V
3.3V
0V
3.3V 0V 3.3V 3.3V 0V 3.3V 1.6V
3.3V
3.3V
0V
0V
3.3V
0V
0V
0V
0V
0V
3.3V
1.5V
1.0V
0.5V
3.2V
3.2V
0V
0V
5
40
5
30
5
31
5
32
∗IC1
∗IC701
∗IC80
IC771
FM/AM
TUNER
ANT.
J1
R
VO CPU
CD 3.3V
CD 1.5V
CD 1.5V
CD LPFCD LPF
EPROM
iPod CP
CIRCUIT
70 69 68 67 66 65 64 63 62 61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
30
31
32
33
34
35 36
37
38 39 40
VDD 1
TEST
RST
MS
CCE
BUCK
BUS3
BUS2
BUS1
BUS0
VDD3
PIO7
PIO6
PIO5
PIO4
PIO3
PIO2
PIO1
PIO0
VSS-2
VDD1-2
XVDD3
X0
X1
XVSS3
DVSS3L
LO
DVDD3L
DVDD3R
RO
DVSS3R
FMOS DMO VDD1-3 PIO8 PIO9 PIO10 PIO11 PIO12 / CDMON0 / FGIN PIO13 / CDMON1 PIO14 / CDMON2 CDMON3
31
0.047
C557
0.1
C559
47K
R553
X540
R558
1M
470
R557
69
R559 100
R556
0
CD-L
0
R586
4.7
R555
10
C561
C562
10
CD-R
R580
0
C567 1
R572 100K
55
R571 10K
R570 100 56 R569 100 59 R568 100 57
58
R567 100
10K
R566
10K
R565
C566
0.1
N
D
T
RL
VOUT
VIN
3
4
C531
0.1
C530
1
N
D
T
RL
VOUT
C533
C532
1
VIN 4
3
0.1
10
R530
C534
0.1
T
RL
N
D
VIN
VOUT 3
4
C535
0.1
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
AMSELOUT2
AMSELOUT1
AMIFAGC1
AMSELIN2
AMSELIN1
PLL2
PLLREF
PLL1
VCO
GNDRF
VCC
VREG
VREF
SDA
SCL
DGND
1
2
3
4
5 6
7
8 9
10
11
12
13
14
15 16
AMRFDEC AMRFIN FMRFIN2 FMRFIN1 GNDRF VCC AMRFAGC LOUT ROUT AGND AMIFAGC2 MPXIN MPXOUT RSSI TEST XTAL
∗C7
L4
C4
0.22
0
∗R10
∗C2 ∗L2
470P
C26
∗L8
4.7uH
∗L1
1000P
C1
∗C27
2
1000P
C3
∗R9
∗R1
∗R2
∗C6 L9
0.47uH
0.1
C23
C13
1
0.22
C14
C15
0.1
12P
C20
X1
4MHz
560uH
L5
560uH
L6
C10
1C11
0.01 C12
0.01
C16
0.01
4.7K
R4
0.1
C17
C18
0.01
C19
0.1
C24
0.1
C22
100u16 47
R5
R8
47
C21
0.1
R6 220
SCL
SDA
R7 220
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65
1
2
3
4
5 6
7
8 9
10
11
12
13
14
15 16
17
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
XT2
XT1
REGVCC3
OC (HIGH SIDE SW)
PON (HIGH SIDE SW)
SCL CP
SDA CP
BSIF-REQ
CP RESET
SCL TU EVOL EEPROM
SDA TU EVOL EEPROM
CMD REQ
DRVMUTE
GATE
REV
FWD
DC OFFSET DET ENC1 AVSS VREFH RESET MODE BEEP FREQ SEL VFD CE REG1-2 VFD SYS DATA VFD PANEL DATA VFD CLK ACC DET (PS1) DVSS REMO
CVCC3
X1
CVSS
X2
DVCC3
DVSS
D+
D-
NMI
NO USE
NO USE
RGB CLK / VFD BLK
ENC2
AVCC3
TEL MUTE
STAGE 2
STAGE 1
KEY2 (STBY)
CNDET
PANDAT
X702
C701
10P
C702
10P
820
R782
TU-R
TU-L
0
R11
0.27uH
L3 C5
15P
VDD5V
CD8V
VDD5V
uCOM3.3V
uCOM3.3V uCOM3.3V
uCOM3.3V
A9V-1
A9V-1
A9V-1
D3.3V
D3.3V
D3.3VD3.3V
100
∗R3
2K
R596
C593
C582
1000P
100P
R595
C592
C583
1000P
2K
100P
R552
0
C565
0.1
C564 0.1
C725
18P
L562
L561
L7
D1.5V
D1.5VD1.5V
D1.5V
D1.5V
4.7uH
R531 47K R532 47K R533 47K
L563
R560 100 73
R561 100 67
R562 100 21
R563 100
L564
20
R564 100
L565
19
L531
∗L10
0.47
C718
R770 4.7K
2.2K
R738
R785
22K
16
R747
24K
R730
47K
14
R772 4.7K
13 R706 100
100
11 R703 100
9
R725
47K R712
100
R701 4.7K
R720 47K
2
3.3K
R758
C715
0.1
R769
47K
12
R762
4.7K R704
4.7K
R763 4.7K
R732
R768 47K
∗R764
∗R766
∗R765
∗R767
95
X701
18P
C724
C705
0.1
87
R775 15K
88
R776 15K
92
47K
100
R737
R759
93
R757 3.3K
C716
0.1
C712
0.1
65 R736
66 R735
47K
TRDA0 TRDA1 67 TRDA2 68 R728
47K
TRDA3 69 R731
47K
SCL
SDA
R753 3.3K R754 3.3K
22K
R751
73
3.3K
∗R749 ∗R750
3.3K
R756
C728
10
47K
C727 56P
54
VCC
MODE1
NC
NRST
MODE0 VSS
5 8
SDA
6SCL
7
4 1 3 2
∗R82
100
75
74
75
74
72
72 ∗C80
0.047
76
77
WPIN
2
A0
1
A2
A1
GND
3
4
7
C723
0.047
8
VDD
270
270
R779
R778
6
5
SCL
SDA
SCL
SDA
C987
76
77
R987
5
16.9344MHz
12MHz
R721
1M
C717
0.1
VDD
R702 100
A9V
GND
SW3.3V
uCOM3.3V
SW3.3V
BU1.5V
C25
10u25
4.7
R554
99
uCOM3.3V
0
SCL
+
+

15
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
X34-691x-xx (3/4)
ONMLK
22
5
13
13
13
13
13
7 7
7
8 8 8
9
10
10
10
10
10
10
10 10
11
12
14
2
7
2
2
2
9 9
6
6
5
12
7
7 7
10
13
13
15 15
3.3V
3.3V 3.3V 9.0V 3.2V 3.9V 3.9V 3.9V 3.9V 3.9V 3.9V 3.9V 0V
5.1V
3.3V 6.6V 6.6V
13.3V
6.6V
0V
6.6V
0V
6.6V
13.3V
6.4V 0V 6.5V
5.0V 4.1V 2.1V
13.4V
3.2V 1.2V 7.9V
1.3V
11.5V
8.5V
3.3V 3.3V
0V
3.3V 3.3V
0V
6.5V
6.6V
4.2V
4.7V
3.2V
0V
3.3V
0V
3.2V
5.0V
3.3V
3.3V
3.3V
3.3V 0V
3.3V
3.3V
0V
0V
0V
3.3V
3.3V
4.9V
11.5V
0.8V
5.2V
0V
0V
0V
0.7V
0V
3.2V
5.0V
0V
5.0V
0V
3.3V
0V 0V
0V
3.2V
0V
3.2V
3.2V
0V
3.2V
0V
0V
0V
0V
3.2V
3.2V
0V
0V
3.2V
3.2V
0V
0V 0V 0V 0V 0V 3.1V 0V 0V 0V 0V
0V
0V
0V
12.4V
0V
IC161
IC901
IC931
IC702
IC301
IC981
IC961
E-VOLUME
REGULATOR
Q951
Q952
D891
S701
RESET
POWER AMP
MUTE
TEL
SW3.3V
RESET
D783
Q782
Q781
LINE MUTE
Q881
D981
Q981
D982
DC-DC
USB5V
SW
HI SIDE
SW3.3V
D983
ILLUMI
28 27 26 25 24 23 22 21 20 19 18 17 16 15
WIN IN
DC ERR
SDA
SCL
VDD
MUTE
WINTC
OUTLF
OUTLR
OUTRR
OUTRF
SWL
SWR
GND
1
2
3
4
5 6
7
8 9
10
11
12
13
14
SE1L SE1R SE2L SE2R SE3L SE3R QD3L QD3G QD3R SE4L SE4LO SE4RO SE4R CREF
1
C173
1
C161
4.7u50
C162
4.7u50
C174
TU-L
TU-R
CD-L
CD-R
AUX-L
AUX-G
AUX-R
10u16
C160
FL
RL
RR
FR
R167 2.2K
1 1 C170
C169
C171 1
0.1
C168R165 100
R163 100 SDA
SCL
0
R162
R161
10K
C177
1
67
66 65 64 63 62 61 60 59
58 57 56
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
15 16
17
18 19 20
21
22
23
24
25 26
27
28 29 30
GATE
REV
FWD
SWCLK
SWDIO
DVSS
DVCC3
BU DET (PS2)
CMD-BUDK
CMD SI
CMD SO
CMD CCE
CD-RST
CD-MUTE
PON CD
SRAMSTB
(LOAD END)
SW2 (EJECT END)
SW1
PSW (RST SW)
AMP MUTE
RCA MUTE
NO USE
HC1-2
NO USE
AMP STBY
DIMMER
IPOD SELECT
PNO FL
NO USE
NO USE
DVSS
DVCC3
NO USE
(for ST ONLY)
PON PANEL
REG1-1
()
DVSS REMO REC2-1 REG2-2 LRCK BCK DATA REG1-3
0.1
C713
1
2
3
4
5 6
7
8 9
10
11
ILM OUT ILM F CD OUT AUDIO F AUDIO OUT CTRL2 VCC CTRL1 GND ACC IN ACCOUT
1.5M
R907
C903
47u16 47u16
C904
100u16
C906
0.1
C905
0.1
C912
R909
27K
4.7K
R908
31
18
C907
330u6.3
1K
R951
R952
330
0.1
C954
47K
R970
68K
R892
0.1
C891
12K
R893
0
R894
4 3
VIN
VOUT
1
2
CTRL GND
C933
0.1
330u6.3
C932
NC
1
VSS
2
VDD 4
3
RST
R746
47K
100
R745
RST
1
2
3
4
5 6
7
8 9
10
11
12
13
14
15 16
17
18 19 20
TAB GND OUT FR- STBY OUT FR+ VCC1/2 OUT RR- GND OUT RR+ RIPPLE INFR INRR PRE-GND INRL INFL AC-GND OUT RL+ GND OUT RL-
VCC3/4
FR+
FR-
RR+
RR-
RL+
RL-
R302
C315
1
47K
22u16
C309
0.22
C306
0.22
C307
0.22
C305
0.22
C308
FL
RL
FR
RR
1
C313
95
14
CD8V
A9V
VDD5V
4.7uH
L701
7
FL,FR
42
A9V
VDD5V
VDD5V
A9V
A9V-2
A9V
VDD3.3V
VDD3.3V
uCOM3.3V
uCOM3.3V
SW3.3V
+11.5V
+14.4V
+14.4V
SW3.3V
R891
10K
0
R168
C913
330u6.3
VDD5V
AUX
CDTUNER AUX
NC NC NC NC NC NC NC NC
0.1
C166
L161
∗C317
100P
∗C316
100P
∗C318
100P
∗C319
100P
R784
22K
R783
100K
0
R307
C704
100u16
TEL
C881
22u16
47K
R882
27K
R881
ILL
DC OFFSET DET
50 R722
47K
47K
49 R726
48
47
46
44
42
R744
TP14
R742
47K
SN
R718
47K
32
47K
R773
4.7K
4.7K
R771
R715 100
21
100
R713 L703
20
19 R708 100
R774 4.7K R770 4.7K
2.2K
R738
R785
22K
16
24K
18
31
55 54 53 52 51 51 R723
52
54
55 56
57
58 59
R739
R727
R740
SWDIO
R741
SWCLK
65 R736
47K
TRCLK
66 R735
47K
TRDA0 TRDA1 67
47K
10K
10K
SW3
VIN
2SW
1
COMP
EN
FB
3
4
7
8
BST
FREQ 6
5
GND
130K
R985 R986
75K
L982
4.7uH
10
C985 C989
10
0.1
C984
15
R493
L981
22uH
180K
R981
R982
33K
R983
150K
C983
150P
C981
10 10
C987
L985
OC
VOUT
1VIN
3EN
5 4
GND
2
76
77
L983
R987
10K
FL+B
USB5V
5
7
47K
10K
47K
C172
100u10
0.1
C714
GND
C703
0.01
C931
0.1
VDD3.3V
SW3.3V
3
.3V
M
3.3V
uCOM3.3V
A9V-2
+14.4V
+14.4V
+14.4V
C990
0.1
TP21
REAR FRONT
0.022
C311
C312
0.022
C706
0.1
uCOM3.3V
+
+
++
+
+
+
+
+ +
+
+

16
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
X34-691x-xx (4/4)
TSRQP
1
2
3
4
5
6
7
13
8
10
10
11
1414
14
14
14
15
15
15
11
0V
6.6V
13.3V
6.6V 3.6V
0V
13.5V
4.9V 5.0V 5.0V 5.0V 4.1V
2
.
1V
0V
0V
0.5V
2.7V
0V
0V
3.3V
3.3V 3.3V
3.3V 6.5V
6.6V
3.3V 3.3V
0V0V
0V0V
0V0V
0V0V
0V0V
0V0V
3.3V
3.3V 0V
0V
0V
A
KDC-4551UB/455UW/4651URY/U449/U5049 (1/2)
PRE OUT
Q341
D341
Q321
D321
D970
D971
Q971
Q970
BU
DET
∗D781 D780
D782
POWER
IC MUTE
CN701
Q701
D102
∗Q780
X16-
CN601
2/2
GND LINE
SIGNAL LINE
B LINE
∗A
∗B
D902
LINE OUT
D112
REAR R
∗J321
REAR L
FRONT R
FRONT L
Q
781
MUTE
DET
SURGE
D901
∗D852
ANT
∗D851
D704
D942
D941
REMOTE OUT
ACC IN
CAR CABLE
CN901
RCA MUTE
∗D110 ∗D111
∗D101 ∗D100
PAN3.3V
10u50
C330
330
R330
180
R332
10u50
C320
330
R320
180
R322
C351
100P
C331
100P
R351
22K
R331
22K
R35010u50
C350
180
R352
330
R341
C341
100P
R342
180
22K
R321
22K
C321
100P
R340
C340
10u50
330
4.7K
R349
R347
4.7K
R358
4.7K
R357
4.7K
8
9
10
11
12
13
14
15
CTRL1 GND ACC IN ACCOUT VDD5V SW5V ANT OUT EXF
31
C907
330u6.3
10u25
C910
R974
47K
R975
47K
R976
68K
20K
R973
10K10K
47K
R970
R971R972
330
R781
47K
R780 47
46
17
18 19 20
21
22
23
24
25
AC
-
GND
OUT RL+ GND OUT RL- VCC3/4 OUT FL+ MUTE OUT FL- GND OFFSET
RL+
RL-
FL+
FL-
1
C313 R310
10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
AUX-L
AUX-R
AUX-G
GND
11.5V
REMOCON
VFDINH
VOL1
VOL2
VFDCLK
VFDCE
SYSDA
USBGND
D+
D-
USB5V
FL+B
PANDAT
CNDET
92
2
93
13
9
11
∗R903 ∗R902
C708
0.1
C711
0.1
47K
R111
1
C111
0
R110
47K
R101
1
C102
1
C101
0
R100
C112
0.1
AUX-G
AUX-L
AUX-R
16
14
V
DD5V
FR
FL
VDD5V
uCOM3.3V
+11.5V
+11.5V
+14.4V
+14.4V
+14.4V
C314
1
ACC3.3V
C913
330u6.3
VDD5V
470
R112
0
∗R333
0
R323
R353
0
∗R343
0
R783
100K
R102
0
413
RL+
FL+
98
RL-
FR-
FL-
FR+
RR+
RR- 11
107
6
125
15
143
16
2
1
FUSE
B.U.
10A
(F52-0023-05)
+14.4V
3300u16
C901
L901
∗R851
4.7K
R777
1K
C941
0.1
R941
4.7K
R901
4.7K
R906
10K
TEL
ILL
L102
L101
C722
10 10
C726
FRONT LEFT (+)
ACC
FRONT RIGHT (+)
REMOTE/P-CON
ANTENNA
FRONT RIGHT (-)
FRONT LEFT (-)
REAR RIGHT (-)
REAR LEFT (+)
REAR LEFT (-)
REAR RIGHT (+)
OE REMOTE
MEMORY
TEL MUTE
ILL
GND
USB5V
FL+B
R304
0
F901
4700P
C368
∗B314
10K
R786
87
88
32
C963
47u6.3
R963
22K
27P
C719 C720
27P
+14.4V
12
99
R491
0
+
+
+
+
+
+
+
+
+
(X34-69xx-xx)
IC1 : ∗
IC80 : MFI341S2313-X
IC161 : E-TDA7718N
IC301 : TB2926CHQ
IC501 : LA6565
IC530,931 : XC6213B332NG-X
IC531,532 : XC6213B152NG-X
IC540 : JCV8022
IC701 : ∗
IC702 : XC6120N282NG-X
IC771 : R1EX24002ASAAX
IC901 : LV5680P
IC961 : BD2224G
IC981 : MP2562DS-X
Q321,341 : IMX9
Q540 : 2SA2188/F/-X
Q701 : RT1P144C-X
Q780,782 : RT1P241C-X
Q781 : RT1N241C-X
Q881 : RT1N141C-X
Q951 : 2SA812A/5-6/-X
Q952,981 : RT1N441C-X
Q970,971 : 2SC1623A/5-6/X
D100,101,110,111
: DZ2J062/M/-X
D102,112,970,971
: DZ2J068/M/-X
D321,341,780,781,783,
891 : BAW56W
D502 : GS1J-LTP-X
D540,782,982 : RKS801KF-X
D704 : DZ2J051/M/-X
D851,852,902,941,942,981,
983 : MBRX130-TP-X
D901 : 1N5401-BPC04
NATION
MODEL NAME DESTI-
KDC-U449 KDC-4251URY KDC-4451UQ KDC-4651URY KDC-455UW KDC-4551UB KDC-415UA/UR KDC-4051URY KDC-4051UG/UR KDC-U5049 KDC-U4049 KDC-248U KDC-U349A/G/R/S KDC-U3049 KDC-4051UGM/URM KDC-MP248U KDC-MP148U KDC-208U U363/E/R
E1/E4
E6
E2/E3
E1
E7
E5 E3
E2 K3
K
K1
K2
M
M6/M5
C1 C1
M1
M4/M3/M1/M2
J1/J3/J2
X34-6922-72
X34-6922-73
X34-6922-72 X34-6912-72
X34-6922-74
X34-6922-71 X34-6912-71
X34-6912-72
X34-6920-11
X34-6910-10
X34-6910-11
X34-6920-10
X34-6920-22
X34-6920-21
X34-6920-23
X34-6910-21
X34-6920-22
X34-6910-21 X34-6910-01
UNIT No. C2BAC6C7C27B314
YES YES YES YES YES YES YES YES YES YES YES YES YES
YES
YESYES
YES YESYES
YES YES
YES
YES YES
YES YES YES YES YES YES YES YES YES
YES YES
7 7 7
4 4
7 7 7 7 7 7 7 7 7 7 7
4 4 4
6 6 6 6 6 6
4 4 4 4 4
6 6 6 6 6 6 6 6
39P
27P 27P
27P 27P 27P 27P 27P 27P 27P 27P 27P 27P 27P 27P 27P 27P 27P 27P
YES YES YES YES YES YES YES YES YES YES YES YES YES YES
D781
YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES
852
D851,
YES YES YES YES YES YES YES YES
IC1
TEF6614TV1S3-X TEF6614TV1S4-X TEF6614TV1S3-X TEF6614TV1S3-X TEF6614TV1S3-X TEF6614TV1S4-X TEF6614TV1S4-X TEF6614TV1S4-X TEF6614TV1S4-X TEF6614TV1S4-X TEF6614TV1S4-X TEF6614TV1S4-X TEF6614TV1S4-X TEF6614TV1S3-X TEF6614TV1S3-X TEF6614TV1S3-X TEF6614TV1S3-X TEF6614TV1S3-X TEF6614TV1S3-X
J321
2PIN 2PIN 2PIN 2PIN 2PIN 2PIN 2PIN 2PIN 2PIN 2PIN 2PIN 4PIN 4PIN 4PIN 4PIN 2PIN 2PIN
L1
0.47uH 0.47uH 0.47uH 0.47uH 0.47uH 0.47uH 0.47uH 0.47uH 0.47uH
1uH 1uH 1uH
0.47uH
0.47uH
1uH 1uH
0.47uH 0.47uH 0.47uH
1.8uH
L2
3.3uH 3.3uH 3.3uH 3.3uH 3.3uH
L8
YES YES YES YES YES YES YES YES YES YES YES YES YES YES
L10
YES YES YES YES
Q780
YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES
R1,2
680K
470K
YES YES YES YES YES
R9
YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES
10
R3, R764
27K 22K
33K 33K 39K 39K 39K
22K
39K 33K 33K 33K
39K 39K 39K 39K
15K
27K
R765
27K 27K 27K 27K 27K 27K 27K
39K 39K 39K 33K 33K 33K 33K 33K 33K
R766
22K 47K 27K
15K 15K
8.2K 8.2K 8.2K
47K 27K
8.2K 8.2K 8.2K 8.2K 8.2K
15K 15K 15K
33K
R767
22K 22K 22K 22K 22K 22K 22K 22K
8.2K 8.2K
15K 15K 15K 15K 15K 15K
47K 47K 47K
R851
YES YES YES YES YES YES YES YES
6.8
7.5 7.5 7.5 7.5 7.5
R902,
903
YES YES YES YES YES YES YES YES
C80,
316-319
YES YES YES YES YES YES YES YES
IC80
YES YES YES YES YES YES YES YES
749,750
R82,
110,111
D100,101,
YES YES YES YES YES YES YES YES YES YES YES
R343
YES YES YES YES
R333
YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES
YES YES YES YES YES YES YES
1.8uH 1.8uH 1.8uH 1.8uH 1.8uH 1.8uH 1.8uH 1.8uH 1.8uH 1.8uH 1.8uH 1.8uH 1.8uH
680K 680K 680K 680K 680K 680K 680K 680K 680K 680K 680K 680K 680K
470K 470K 470K 470K
YES YES YES YES YES YES YES
6.8 6.8 6.8 6.8 6.8 6.8 6.8 6.8 6.8 6.8 6.8
6.8 6.8
IC701
W05-1643-00 W05-1644-00 W05-1644-00 W05-1644-00 W05-1644-00 W05-1644-00 W05-1643-00 W05-1643-00 W05-1643-00 W05-1643-00 W05-1643-00 W05-1643-00 W05-1643-00 W05-1643-00 W05-1643-00 W05-1643-00 W05-1643-00 W05-1643-00 W05-1643-00

17
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
X16-704x-xx (1/1)
UVWXY
1
2
3
4
5
6
7
3.2V 3.2V
3.2V
0V
3.2V
11.2V
2.5V
2.5V
7.5V
7.5V
∗IC602
SWITCH UNIT (X16-704x-xx)
KDC-4551UB/455UW/4651URY/U449/U5049 (2/2)
A
CN601
FL601
TAG
RDS
BT
ST
TI
IN
USB
CN603
AUX
J602
Q602
D686
D685
ENCODER
EN601
REMO.CON.
S602S604
S607
EJECTDISP
3
6
2
S605
S608
5
S616
S610
(ACCENT)
BAND
MATRIX
KEY
S606
S609
1
4
S603
SRC
S611
S612 S613 S614 S615
IPOD/BT
Q610
Q611
Q612
∗D652
D608
D607
D606
D605
D603
D604
D602
SRC
BAND
EJECT
DISP
3142
D601
D651
∗D655 ∗D658 ∗D659
∗D680
∗D667
∗D666
∗D665
∗D660
∗D661
∗D672
∗D653
∗D654 ∗D657
∗D671
∗D668 ∗D669 ∗D670
∗D656
∗D674
∗D675
∗D676
∗D662
∗D663
∗D673
∗D677
∗D678
∗D679
∗D664
USB
AUX
USB
AUX
(ACCENT)
IPOD/BT IPOD/BT
(ACCENT)
SUBSUBSUB
65
GND LINE
SIGNAL LINE
B LINE
1/2
X34-
CN701
PAN
3.3V
Q603
USB
DIMMER
DIMMER
LED
51
50 49 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
16 15
14
13
12
11
10
9 8
7
6 5
4
3
2
1
F- F- NP KI5 IC KI4 1G KI3 IC 2G KI2 KI1 IC VFDCE 3G VFDCLK SYSDA IC VFDINH Q1 Q2 Q3 3G Q4 GRID1 IC GRID2 GRID3 IC IC KS1 KS2 2G KS3 KS4 IC KS5 IC PANDET IC OSCI VDD 1G VH PGND LGND NP F+ F+
1
2
3
OUT
GND VCC
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CNDET
PANDAT
FL+B
USB5V
D-
D+
USBGND
SYSDA
VFDCE
VFDCLK
VOL2
VOL1
VFDINH
REMOCON
11.5V
ACC3.3V
GND
AUX G
AUX R
AUX L
IC
R636
100
R635
100
R634
R637 100 R638 100
100
R642 100 R645 100 R644 100 R643 100
100K
R611
8
11
12
13
KI4
KI5 KI3
KI1
KI2
KS3
KS2
KS1
KS4
4
2
3
1
1
3
2
11
9
10
8
12
13
D-
D+
D-
D+
LF601
R683
10K
C682 27P
C681 27P
VOL
AUDIO
KS4
KS2
KS3
KI1
KS1
KI5
KI2
KI3
KI4
0
R618
0
R617
TL626
TL627
TL628 TL629 TL625
TL624
TL623
TL622
TL621
27
R681
27
R682
4.7
R612
R622
0
0
R625
∗R652
390
1000P
C618
47K
R615
470P
C617
C614 1000P
C616 470P
1G
2G
1G
2G
2G
1G
C615 470P
0.1
C611
C612
0.1
100
R641
100
R640
100
R639
100
R613
0
R614
C671
4700P 4700P
C672
0.1
C621
10
9
R650
3.6K
R651
3.6K
0 0
∗R653
∗R654
∗R648 ∗R659 ∗R669
∗R656 ∗R670
∗R657
∗R671
∗R658
∗R673
∗R674
∗R655
10
C684
Q602
VCC
D-
D+
GND
(OPEN)
∗R672
(X16-704x-xx)
D652,655,659,665-669,680
:∗
D653,654,656-658,
: B30-1780-05
D670 : ∗
IC602 : KSM-2003TN5B
Q602,610-612
: RT1P141C-X
D601-608,685,686 : DZ2J051/M/-X
D651 : B30-1566-05 660-663,671,674,
QLF0202-001FL601 :
D664 : ∗
675,677,678
D672,673,676,679 ∗
:
RT1N241C-XQ603 :
D670MODEL NAME UNIT
No.
DESTI-
NATION
470YES YES
470
750
656,657,
R653,654,
YES
IC602
D653,654,656-658,
R648
560KDC-U449
KDC-U5049
KDC-4551UB
KDC-455UW
KDC-4651URY
M1
C1
E1
E2
E3
2-70
3-01
2-73
2-71
2-72
660-663,671,
YES
680
560
R652
YES
R655
560
750
R658,
669
390
15K
R659 674
YES
YES
R673,
YES
YES
560
560
560
470
680
680
750
750
750
750 15K
750 15K
750 15K
KDC-HD548U 0-11 K
CATEGORY
ENTRY USB
ENTRY HD YES 680 680 750 750 15K YES
674,675,677,678 670,671
B30-3210-05
B30-1780-05
B30-1779-05
SMLE12WBCR1R2X
D652,655,659,
665-669,680
B30-3210-05
B30-3210-05
B30-3210-05
B30-1780-05
B30-1779-05
B30-3210-05
D664
SMLE12WBCR1R2X
SMLE12WBCR1R2X B30-3210-05
B30-3210-05
B30-3210-05
SMLE12WBCR1R2X
B30-1779-05 B30-1779-05
SMLE12WBCR1R2X
B30-3210-05
B30-3210-05
D672,673,676,679
SMLE12WBCR1R2X
CAUTION : For continued safety, replace safety critical components only with manufacturer’s recommended parts (refer to parts list).
Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed
parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
• DC voltages are as measured with a high impedance voltmeter.
Values may vary slightly due to variations between individual instruments or/and units.

18
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
3
2
1
BA
: W01-1737-08
: W01-2007-08
: W01-1738-08
Grease
66
46
13
81
29
17
71
63
31
32
86
83
28
51
51
64
2
76
882
F
F
F
FF
F
DD
F
E
EE
F
F
C
E
F
F
55
B
A
896
(X32-)
804
892
69
33
21
79 67
14
DPU1
69
48
42
43
41
39
37
38
26
27
12
1
22
23
16
24
68
62
DM1
22
78
DM2
77
DM3
834
61
896
903
901
902
EXPLODED VIEW (CD MECHANISM)
Parts with the exploded numbers larger than 700 are not supplied.

19
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
3
2
1
DC
(X34-)
DME1
FC1
(X16-)
PA1
Ex2
Kx2
Ax2
Fx2
E
C
G
B
731
732
772
701
238
221
204
205
222
208
216
226
254
233
202
239
255
253
240
250
252
256
251
259
E
C
H
793
(X34)
794
(X34)
F901
H
C
J
A
K
B
B
771
703
D
266
RC1
DC1
209
263
223x2
217
247
261
DC2
Depends on the models. Refer to the parts list.
A
B
C
D
E
F
G
H
J
K
: GE40377-002A
: N86-2604-48
: N86-2606-48
: N80-2006-48
: N80-2008-48
: GE40377-005A
: N82-2606-48
: QYSDSG3006ZA
: N86-2608-48
: N86-2610-48
Parts with the exploded numbers larger than 700 are not supplied.
EXPLODED VIEW (UNIT)

PARTS LIST
Indicates safety critical components.
Ref. No. A
d
d
N
e
wParts No. Description Desti-
nation
M1: KDC-U449 C1: KDC-U5049
E1: KDC-4551UB E2: KDC-455UW E3: KDC-4651URY
Ref. No. A
d
d
N
e
wParts No. Description Desti-
nation
✽New parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
20
KDC-4551UB/455UW/4651URY
KDC-U449/U5049
KDC-4551UB/455UW/4651URY/U449/U5049
202 1D GE10283-001A TOP CHASSIS
204 2C GE10286-001A REAR COVER
205 3D
✽
GE20271-002A BOTTOM COVER
208 2C GE34074-001A FRONT CHASSIS ASSY
209 1C A02-2757-13 HARD CASE ASSY M1
PA1 3C
✽
GE20277-001A PANEL ASSY E1
PA1 3C
✽
GE20277-002A PANEL ASSY E2
PA1 3C
✽
GE20277-007A PANEL ASSY M1
PA1 3C
✽
GE20277-010A PANEL ASSY C1
PA1 3C
✽
GE20280-015A PANEL ASSY E3
RC1 1C A70-2104-05
REMOTE CONTROL UNIT (RC-405) E3M1C1
-
✽
GET0689-002A INSTRUCTION BOOK (FRE.DUT.ITA.) E1E2
-
✽
GET0689-002A INSTRUCTION BOOK (SPA.POR.) E1E2
-
✽
GET0689-005A INSTRUCTION BOOK (ENG.GER.) E1E2E3
-
✽
GET0689-005A INSTRUCTION BOOK (RUS.UKR.) E1E2E3
-
✽
GET0691-001A INSTRUCTION BOOK (ENGLISH) M1
-
✽
GET0691-002A INSTRUCTION BOOK (ARABIC) M1
-
✽
GET0693-001A INSTRUCTION BOOK (S-CHINESE) C1
216 3C
✽
GE10289-001A LIGHT GUIDE
217 1C GE20274-001A TRIM PLATE
221 2C GE34045-001A LOCK LEVER
222 2C GE34046-001A RELEASE LEVER
223 1C GE40510-001A HOOK
226 3C GE34058-001A CONDUCTIVE RUBBER
DC1 1C
✽
QAM1341-001 CAR CABLE M1C1
DC2 1C E30-6937-05 CAR CABLE
E1E2E3
FC1 2D
✽
WJT0254-001A-E E-CARD WIRE
233 3C
✽
GE34055-001A USB DOOR COVER
F901 2D F52-0023-05 FUSE (10A)
238 2C GE40504-001A SPRING (TORSION)
239 2C GE40505-001A SPRING (COMPRESSION)
240 3C GE40505-002A SPRING (DETACH)
-
✽
GE34220-001A INNER CARTON E1
-
✽
GE34222-001A INNER CARTON E2
-
✽
GE34224-001A INNER CARTON E3
-
✽
GE34236-001A INNER CARTON M1
-
✽
GE34246-001A INNER CARTON C1
247 1C GE34134-001A MOUNTING SLEEVE ASSY
250 3C
✽
GE34053-001A ACCENT BUTTON BASE
251 3C
✽
GE34052-001A ACCENT BUTTON TOP (iPod)
252 3C GE34059-001A EJECT BUTTON
253 3C GE34060-001A DETACH BUTTON
254 3C GE34061-001A SRC BUTTON
255 3C GE34063-001A SEARCH BUTTON
256 3C GE34064-001A PRESET BUTTON
259 3C GE40511-001A VOL KNOB RUBBER
E1E2E3
259 3C GE40511-001A VOL KNOB RUBBER C1
259 3C
✽
GE40511-002A VOL KNOB RUBBER M1
261 1C N99-1757-15 SCREW SET M1C1
263 1C N80-2008-43 TAP SCREW (ACCESSORY) M1C1
A 3D GE40377-002A SPECIAL SCREW
B 2D N86-2604-48 TAP SCREW
C 2D N86-2606-48 TAP SCREW
D 3C N80-2006-48 TAP SCREW
E 2C N80-2008-48 TAP SCREW
266 1C W01-1710-05 CARRYING CASE
E1E2E3
DME1 1D X92-6630-00 MECHANISM ASSY (HCS-1000W)
SWITCH UNIT (X16-704x-xx)
D651 B30-1566-05 LED
D652 B30-1779-05 LED E3
D652 B30-3210-05 LED E1M1
D652
✽
SMLE12WBCR1R2X LED E2
D652-669 B30-1780-05 LED C1
D655 B30-1779-05 LED E3
D655 B30-3210-05 LED E1M1
D655
✽
SMLE12WBCR1R2X LED E2
D659 B30-1779-05 LED E3
D659 B30-3210-05 LED E1M1
D659
✽
SMLE12WBCR1R2X LED E2
D664-670 B30-1779-05 LED E3
D664-670 B30-3210-05 LED E1M1
D664-670
✽
SMLE12WBCR1R2X LED E2
D671 B30-1780-05 LED C1
D672,673 B30-1779-05 LED E3
D672,673 B30-3210-05 LED E1M1
D672,673
✽
SMLE12WBCR1R2X LED E2
D674,675 B30-1780-05 LED C1
D676 B30-1779-05 LED E3
D676 B30-3210-05 LED E1M1
D676
✽
SMLE12WBCR1R2X LED E2
D677,678 B30-1780-05 LED C1
D679,680 B30-1779-05 LED E3
D679,680 B30-3210-05 LED E1M1
D679,680
✽
SMLE12WBCR1R2X LED E2
D680 B30-1780-05 LED C1
C611,612 CK73GB1H104K CHIP C 0.10UF K
C614 CK73GB1H102K CHIP C 1000PF K
C615-617 CK73GB1H471K CHIP C 470PF K
C618 CK73GB1H102K CHIP C 1000PF K
C621 CK73GB1H104K CHIP C 0.10UF K
C671,672 CK73GB1H472K CHIP C 4700PF K
C681,682 CC73GCH1H270J CHIP C 27PF J
C684 NCJ11EK-106X-R C CAPACITOR
CN601 E59-0859-05 TDF CONNECTOR
CN603
✽
QNZ1057-001 USB CONNECTOR
J602
✽
QNS0308-001 DIA 3.5 TYPE JACK
LF601
✽
NQR0536-001X CHOKE COIL
R611 RK73GB2A104J CHIP R 100K J 1/10W
R612 RK73GB2A4R7J CHIP R 4.7 J 1/10W
R613 RK73GB2A101J CHIP R 100 J 1/10W
R614 RK73GB2A000J CHIP R 0.0 J 1/10W
R615 RK73GB2A473J CHIP R 47K J 1/10W
KDC-4551UB/455UW/4651URY/U449/U5049
SWITCH UNIT (X16-704x-xx)