Kenwood KD-CU-5049, KDC-4651-URY, KDC-455-UW, KDC-4551-UB, KD-CU-449 Service Manual

CD RECEIVER

KDC-4551UB/455UW KDC-4651URY KDC-U449/U5049

SERVICE MANUAL

Tuner setting adjustment after replacing E2PROM

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”.

B53-0835-00 (N) 223

KDC-4451UB : Panel assy (GE20277-001A)

KDC-4651URY : Panel assy (GE20280-015A)

KDC-U5049 : Panel assy (GE20277-010A)

Mounting sleeve assy (GE34134-001A)

* Car cable (QAM1341-001)

KDC-4551U

KDC-4651U

KDC-U5049

* Car cable (E30-6937-05)

KDC-455UW : Panel assy (GE20277-002A)

KDC-455U

KDC-U449 : Panel assy (GE20277-007A)

KDC-U449

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 KDC-U449 KDC-U5049 Y33-3383-01 TDF-U5049

* Carrying case (W01-1710-05)

Y33-3382-73 TDF-4651URY Y33-3380-21 TDF-U449

* Remote control unit (RC-405) (A70-2104-05)

* Tap screw (2x8) (N80-2008-43)

* Depends on the model. Refer to the parts list.

* Screw set (N99-1757-15)

Hook (GE40510-001A) x2

This product complies with the

* Hard case assy (A02-2757-13)

This product uses Lead Free solder.

Trim plate (GE20274-001A)

RoHS directive for the European market.

KDC-4551UB/455UW/4651URY

2

KDC-U449/U5049

ELECTRIC UNIT (X34- )

IC1

IC701

IC702

RESET IC

BU3.3V

S701

RESET SW

to DC

CONNECTOR

EXT REMO (OE REMOTE)

CN701

CN601

to GND

PANEL DET

J1

TUNER

ATOMIC

2

ANT

A9V

12

IC161

BU5V

PANEL3.3V

E-VOL

IC771

E2PROM

BU3.3V

111

22

USB5V

A9V

SYSTEM u-COM & USB HOST

Q701

PANEL3.3V (REMO DRV)

CONNECTOR

MUTE

1

5

1

ILLUMI+B

R902,903

LOAD RESISTOR (FL FILAMENT)

FL+B

BU3.3V

8

3

9

IC540

SERVO IC (OASIS)

CD1.5V CD3.3V

IC530-532

1

CD 3.3V CD 1.5V

i-Pod CP

IC80

2

1

∗

Q780

BU5V

SW3.3V

IC301

POWER AMP

Q321,341

RCA MUTE

MUTE

2

SW3.3V

to MECHA

Q951,952

SW 3.3V

BU

∗

J321

RCA-OUT

BU5V

BU DET

RESET

BU3.3V

DC-CN etc

PHONE ACC5V / BU-DET PON-FL PS1-1 / PS1-2 / PS1-3 PS2-1 / PS2-2

IC501

MOTOR DRIVER

CD MECHA

VDD3.3V

PS1-1 / PS1-2 / PS1-3 PS2-1 / PS2-2 P-ANT

ACC5V

ILLUMI+B

AUDIO

CD

CD3.3V

USB5V

BU3.3V

IC931

SW 3.3V

PHONE

BU DET

SW5

CD

BU5V

2

FL+B

BU5V

D891

PHONE

Q970

BU DET

Q971

SURGEDET

IC901

POWER SUPPLY IC

IC961

HI-SIDE SW

IC981

USB5V (DC/DC)

BU3.3V

SW3.3V

CN901

DC-CN

PHONE

SP-OUT

ACC

BU

P-CON

BLOCK DIAGRAM

J602

IC602

EN601 FL601

F-AUX

REMO

ROTARY ENCODER

SW3.3V

SWITCH UNIT (X16- )

Q602

PANEL SW3.3

USB CN

CN603

KEY

FL

9

ILLUMI

KEY MATRIX

1. Panel

SEARCH

KDC-4551UB/455UW/4651URY KDC-U449/U5049

TEST MODE

ACCENT

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

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.

✳

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)

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

Period to prohibit TEL/LINE MUTE immediately after activation

(normally 10 seconds)

Mecha Initialize Action Prohibited

Difference in action

Various setting value

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

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)

1 second

3

KDC-4551UB/455UW/4651URY KDC-U449/U5049

TEST MODE

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 Speciﬁ cation

●

Operation Display content Details

1 (Toggle)

2 (Toggle)

3 (Toggle) All lights ON/OFF

4 (Toggle)

5 (Toggle) Preout switch

6 (Toggle) All lights ON/OFF All lights ON/OFF with toggle

SOURCE

Transition

RETURN Mode release

■

Syscom version display

All lights ON All lights ON (Switch to other display)

Serial No. display

All lights ON

Information display iPod

veriﬁ cation IC mount

status display

All lights ON

Mode release Return to Normal mode

SN :00000000

iPod :

iPod :OK

iPod :NG

iPod :

SWP R E R E A R

SWP R E S UB –W

SYS0∗–

∗∗∗

∗∗

Syscom version (Refer to Syscom Version Table)

Serial No. display (8-digit)

Display as it is in hex

✳

All lights ON (Switch to other display)

All lights ON/OFF with toggle

iPod veriﬁ cation IC mount status display

Blank: Verifying

OK: Veriﬁ cation IC mounted

NG: Veriﬁ cation IC not mounted

: Non-iPod support model

∗∗

All lights ON (Switch to other display)

Switch Preout with Toggle

(1Preout/2Preout model only)

Return to Normal mode

Tuner Test Mode Speciﬁ cation

●

The following displays shall be indicated according to the TUNER status.

Status Display content Details

TUNER IC

Communication error

TUN CON NG

4

Communication to TUNER IC not available (indicated unless

the mode is in Clock Display Mode).

Status Display content Details

Adjustment not

implemented

RDS Speciﬁ ed data

reception

Operations



Operation

ACCENT

BAND

SEARCH

DISP

■

TUNER IC

display

4 Preset operation

BAND switch

operation

S meter voltage

judgment display

Shift to TUNER

setting mode

TEST MODE

ERR

∗

RDS T E ST

ATOM RDS

FM1 – 3 A 9 7.9 A

S–MTR xx:OK

S–MTR xx:NG

S–MTR xx:––

∗

Display content Details

A97.9A

KDC-4551UB/455UW/4651URY KDC-U449/U5049

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.

Turn OFF P-CON forcibly if PS=RDS TEST is received.

P-CON recovers with Power OFF/ON.

Display TUNER IC version

Display content is assigned by Tuner Development G.

✳

Switch to either 98.3 (except for J type)

Execute Band Switch as shown in the following table

every time Band key is pressed in each type.

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

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

Select TUNER adjustment method (A: AUTO) us-

ing BAND key.

BAND

■

(Toggle)

AUTO Adjustment

Mode

A S–xx L–xx

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

Start Adjustment (Start Auto adjustment, and

VOL PUSH Adjustment start

A S–xx L–xx

transit to Success/Failure display depending on

the adjustment result)

3. Status display during adjustment

Status Display content Details

Adjustment success

Adjustment failure

ADJ OK :x x

ADJ NG

When the adjustment value write-in to E2PROM (IC771 on X34)

has been completed. xx: Level offset value (HEX)

When the adjustment value write-in to E2PROM (IC771 on X34)

has failed.

5

KDC-4551UB/455UW/4651URY KDC-U449/U5049

TEST MODE

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

E

M/C

CD Test Mode Speciﬁ cation

●

It shall be the same as normal RST start in other than the below setting.

Playback track from top No.9

Default for Display mode Play time

FM1 FM2 FM3

q

FM1 FM2 FM3

q

Content Details

MW/LW - -

w

MW

w

e

SW1

r

SW2

q→w→q

q→w→e→r→q

…

Operations in CDDA playback



Operation



Special track up

Special track



down

CD HC1

CD HC2

CD

C D 0 1: 1:2 3

1

(Toggle)

3

4

5

6

HC1/2 Judge-

ment Information

Display

Normal Display

Special jump

operation

Special jump

operation

Special jump

operation

Special jump

operation

Display content Details

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

One-by-one Track down by sequence follow Track No.

HC1/2 Judgement Infomation.

HC1: HC1 mecha (for this model)

∗∗∗

HC2: HC2 mecha

: Impossible of Judgement

∗∗∗

Normal Display

Jump to No.28

(Scratch 0.7mm for MUSIC line vibration test)

Jump to No.14 (Damaged disc TCD-731RA Tr14)

Jump to No.15

Set Volume value at 26 (for error operation FCT check of

20Hz 0dB DC protection)

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.

6

KDC-4551UB/455UW/4651URY KDC-U449/U5049

TEST MODE

Mode content

●

Syscon shall display the following information after entering this mode. The operation shown below shall be workable.

Display content Details

SRV T EST

Common operation mode for only STANDBY sources

●

Operation

1

3

4

5

■



■

Development name

status display

Power ON duration

display

Disc action duration

display

Disc Eject number

of times display

Disc Eject number

of times clear

Forced Power OFF

information display

Forced Power OFF

info clear

Display content Details

1011WE –200

PONTM 0H x x

PONTM xxxxx

CDTM 0 Hx x

CDTM xxxxx

EJCNT xxxxx

POF F – – –

POF F PNL

The display is released when another operation is executed.

Development name – Version (Micom)

00~50 are displayed in “xx”.

For less than 1 hour, the display is indicated per 10

minutes.

00001~10922 are displayed in “xxxxx”.

MAX 10922 (hours)

0~50 are displayed in “xx”.

For less than 1 hour, the display is indicated per 10

minutes.

00001~10922 are displayed in “xxxxx”.

MAX 10922 (hours)

Display Disc Eject number of times.

MAX 65535 (times)

Clear Disc Eject number of times by pressing for 2

seconds when it is displayed.

No forced Power OFF

Forced Power OFF due to Syscon-Panel communica-

tion error.

Clear forced Power OFF information by pressing for 2

seconds when it is displayed.

CD Error Information Display Mode

●

Operation

DISP

Move

between

BAND

(Forward

search)

items with

/

CD error information

display mode

CD Mech error log

display

CD Load error info

display

CD Eject error info

display

CD time code error

count information

display (count skip)

Display content Details

MECH A ER #:x x

LOAD ER#:x x

EJECT ER#:xx

CNT LOSE

CDDA :x x

CDROM :x x

Transit to CD error information display mode.

Mech error history 1,2,3 (latest)

#: History No. (1,2,3)

xx: numbers of errors, “--” when there is none

Load error switch 1,2

#: Switch No. (1,2)

xx: numbers of errors, “--” when there is none

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 (count skip)

mode display

CD-DA error count numbers

xx: numbers of errors and “--” when there is none

CD-ROM (compressed ﬁ le) error count numbers

xx: numbers of errors and “--” when there is none

7

KDC-4551UB/455UW/4651URY KDC-U449/U5049

TEST MODE

Operation

Move

between

BAND

(Forward

search)

items with

/

DISP

■

DISP Mode release CD error information display mode release

CD time code error

count information

display (no count

update)

CD error information

clear

Display content Details

CNT ST A Y

CDDA :x x

CDROM :x x

CD time code error count information (count not up-

dated) mode display

CD-DA error count numbers

xx: numbers of errors and “--” when there is none

CD-ROM (compressed ﬁ le) error count numbers

xx: numbers of errors and “--” when there is none

CD error information all clear

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

D

CERR

DC OK

When DC error is detected (in case that one of capacitor leakage, wrong connection or

other detection is found)

When DC error is not detected (in case that none of capacitor leakage, wrong connec-

tion or other detection is not found)

Mode operation speciﬁ cation

●

Operation

1 DC ERR1 display

1 DC ERR1 clear

■

2 DC ERR2 display

2 DC ERR2 clear

■

Display content Details

DC1 ERR

DC1 OK

DC2 4

DC2 0

When wrong connection & DC error in other detection

duration is detected

When wrong connection & DC error in other detection

duration is not detected

Clear detection information when wrong connection &

DC error in other detection duration is displayed. (Clear

data ﬂ ash)

Display detecting number of times in capacitor leakage

detection duration (0~4)

Clear number of times for detection information in ca-

pacitor leakage detection duration. (Clear data ﬂ ash)

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.

8

FM200kHz/AM10kHz ↔ FM50kHz/AM9kHz

EDCBA

KDC-4551UB/455UW/4651URY KDC-U449/U5049

PC BOARD (FOIL SIDE VIEW)

CD PLAYER UNIT X32-6430-00 A/2 (LVB11003-001A)

X32 B/2

SL1

CN102

1

2

15

1

R1

B1

3

SW4

SPBLK

SP+ RED

FE-

WHT

LO-

WHT

LO+ YEL

FE+

YEL

REST ORG

MGND

ORG

1

4

SL2

CN101

26

5

SW3

SW2SW1

6

Refer to the schematic diagram for the values of resistors and capacitors.

7

9

0

3

4

L702

W

F G H I J

KDC-4551UB/455UW/4651URY KDC-U449/U5049

1

2

3

4

5

6

PC BOARD (FOIL SIDE VIEW)

ELECTRIC UNIT X34-691x-xx (GEB10301-201A)

R4

C19

C591

C590

R576

CBE

EBC

R357

C18

R596

R342

D321

R251

C22

R577

R358

R5

C14

R416

B551

PRE OUT

C341

R341

Q321

C340

C251

R11

R8

C15

R594

C592

C593

R583

B532

D540

R550

C102

J321

B313

R340

B314

L7

R6

R7

16

C20

B2

B533

R413

CN502

C254

R343

R323

B3

C508

C101

R332

R256

B170

R534

R258

C252

R333

C8

C21

C174

R546 R547

EB

Q540

R414

R330

R254

B311

R417

C509

C331

R331

R324

X1

C162

C330

B192

B4

B5

B534

C550

C510

C512

C351

R351

CBE

EBC

25

B173

R165

R548

R502

26

R352

R334

B169

B171

B172

C173

B184

B185

C551

R349

Q341

B165

B166

B167

R163

R503

C586

R459

ANTENNA

J1

C28

L8

C26

L1

C2

L9

L2

C27

R3

L3

R586

C583

R593

R585

D102

D112

D113

R490

C368

R322

R320 C253

R257

R373

R255

R253

Q251

CBE

D1

D2

1

L4

4

R528

R581

R580

R1

C29

C6

L6

R599

R582

C1

R2

L5

C12

C595

R575

C11

R529

C584

C594

B552

B531

R589

C582

EBC

C24

C23

R587

R590

1

L10

R9

R10

32 17

C3

C10

C4

C7

C5

R591

R579

C587

R592

85

R595

IC580

1

C588

R597

R598

C585

B527

B528

B529

C111

C321

R321

C320

B521

R252

C17

C16

IC1

R588

R584

R468

2

D251

C13

C25

R305 R780

C314

D782

D341

B163

B164

R162

R353

R310

C170

C350

C171

TH301

C310

R461

C316

C169

R168

C308

C168

R350

R347

IC161

B174

R167

R161

C161

B181

C575

C576

R412

R411

R520

B180

B182

R506

R519

C503

C511

B176

B177

B178

B179

R723

B183

R541

B503

R402

R545

R549

C553

R552

R512

C515

R467

C557

C556

C501

R517

C504

C516

36 19

R501

1

B535

C318

C160

R477

C177

C543

IC301

C172

R531

R510 C506

C309

B189

R404

R532

R513

B301

C178

D781

C542

R515

C514

B305

B304

B303

B302

Q781

Q780

B190

R540

R533

R507

B309

R491

B191

C540

C541

40

C517

R518

C518

R504

R306

R401

R783

EB

1

IC540

R553

B306

B187

B542

C574 C573

80

41

C561

R728

R111

C312

Q782

D301

C311

R781

24 2

25 1

R303

R304

C313

C307

C317

R400

C319

B315

B168

1528

B186

141

C166

L161

B175

D780

R478

SDA

L12

L11

SCL

R432

R726

R722

B543

C544

C545

R403

C546

C547

C548

C549

R542

R544

R543

20

C552

R505

C558 C554

C555

R509

C505

R516

R508

21

C559

R410

R406

R551

R511

IC501

18

C507

R514 C513

C560

C305

R405

B536

C563

R101

B310

B188

EB

L562

D503

C100

D783

C727

RST

C534

C572

L561

R554

R555

B307

C306

R447

R574

C570

C568

B537

C596

R415

R307

R784

R573

C562

B308

D132

R302

R754

R779

R418

R471

21

34

C571

61

60

C565

C564

R557

B538

C315

R558

R492

R974

EB

Q971

IC532

C535

C569

D502

R753

C532

R463

C567

R570

L563

X540

L531

R462

B908

D971

R778

B793

IC531

21

34

R572

R566

C566

R565

B921

B920

R971

R973

B792

R571

R562

R556

B919

B925

B912

R481

Q970

R972

D970

41

IC771

R787

58

B791

IC530

C533

C530

R530

R409

R408

B540

B539

R568

R567 R569

L565

L564

R564

R563

R708

R713

R715

B762

C706

R970

EB

B790

21

34

R560

R446

R465

R466

R464

B541

R485

R736

C110

S701

R727

R731

C901

D901

B901

R976

R975

C723

R904

R426

C531

R559

R749

R735

R422

R451

C932

C954

R479

R450

R718

SN

R742 R744

R739

B760

B761

C713

R740

SWDIO

R428

R561

85

IC80

14

R82

R110

R745

B911

R445

R430

L901

C931

B789

R439

R440

C714

50

51

R752

C80

R751

R102

R100

D101

B924

R444

R741

R431

D11

IC9

21

34

R48

R7

S

R429

R750

D100

B933

R443

Q951

R701

7

10