Kenwood RX-DM505-USBB, LSM-505-S, LS-M505-B Service Manual

COMPACT Hi-Fi COMPONENT SYSTEM

RXD-M505USB-B/M505USB-S LS-M505-B/M505-S

SERVICE MANUAL

(M-505USB)

© 2007-10 PRINTED IN JAPAN B53-4023-00 (N/J) 122

Front cabinet	CD door
(A60-2529-08) : S	(A29-1280-08) : S
(A60-2532-08) : B	(A29-1284-08) : B

USB jack (E58-0096-08)

Volume knob (K29-8628-08) : S (K29-8643-08) : B

Phones jack (E11-1012-08)

Cassette door

(A53-2490-08) : S

(A53-2492-08) : B

DANGER:

Please do not look at the laser beam directly during

repair or operation check.

S : Silver

B : Black

This product uses Lead Free solder. This product complies with the RoHS directive for the European market.

RXD-M505USB/LS-M505

ACCESSORIES / CAUTIONS

Accessories

AM loop antenna (1)	FM ANT Wire (1)	Remote control unit (1)	Batteries (R6/AA) (2)
(T90-0926-08)	(T90-0925-08)	RC-F0320E	(–)
		(A70-1727-08)

SYSTEM vs COLOR

SYSTEM	RECEIVER	SPEAKER	COLOR
M-505USB-B	RXD-M505USB-B	LS-M505-B	BLACK
M-505USB-S	RXD-M505USB-S	LS-M505-S	SILVER

Cautions

Resetting the Microcomputer

The microcomputer may malfunction (unit cannot be operated, or shows an erroneous display) if the power cord is unplugged while the power is ON, or due to some other external factor. If this happens, execute the following procedure to reset the microcomputer and return the unit to its normal operating condition.

When the power is on and TUNER input is selected, press and hold down the (■ stop) button on the unit for more than 2 seconds. Unplug the AC cord and plug it back in if “INIT. OK” is appears.

• Please note that resetting the microcomputer will clear the contents of the memory and return the unit to the state it was in when it left the factory.

The marking of products using lasers

CLASS 1 LASER PRODUCT

LASER KLASSE 1

APPAREIL A LASER DE CLASSE 1

LUOKAN 1 LASERLAITE

KLASS 1 LASERAPPARAT

The marking this product has been classified as Class 1.

It means that there is no danger of hazardous radiation

outside the product.

Location: Bottom

2

RXD-M505USB/LS-M505

EXTERNAL VIEW

RCA jack	R		L
(E63-1426-08)			FM ANT.
		AUX IN		AM ANT.
			757
	L	L
	SPEAKER
	IMPEDANCE
	47
	R	R
	Speaker terminal
	(E70-1034-08)

Tuner module (W02-4673-08)

Rear cabinet (A80-4576-08) : S (A80-4577-08) : B

AC Cord* (E30-)

Rubber foot (J02-1590-08)

* Refer to parts list on page 20.

3

RXD-M505USB/LS-M505

ADJUSTMENT

	No	ITEM	INPUT	OUTPUT	RECEIVER	ALIGNMENT POINT	ALIGNMENT SETTING	FIG.
			SETTING	SETTING	SETTING
					Cassette deck
							Demagnetize heads with the head
		Demagnetization			Power: OFF	Heads, capstan and	eraser (Demagnetizer). Clean
	1		-	-	Demagnetization		heads capstan and pinch roller
		and cleaning				pinch roller
					and cleaning		using a cotton swab slightly
							damped with alcohol
							Adjust the output to maximum and
			MTT-114:	Connect the			turn the azimuth adjusting screw
	2	Azimuth of Heads		oscilloscope and VOM	PLAYBACK	Screw fi xing heads	for Lissajours waveform pattern of
			10kHz,-10dB
				to PHONE jack.			the oscilloscope to become close
							to a 45-degrees straight line.
			MTT-111	Connect the		Potentiometer in	Adjust the tape speed so that 3kHz
	3	Tape Speed		oscilloscope and VOM	PLAYBACK
			3kHz			motor	is obtained at the center of tape.
				to PHONE jack.
	4	Bias Frequency	Normal tape	Connect the frequency	RECORD	L203	The frequency counter shows
				counter across C202			85kHz+-0.5kHz

4

A	B	C	D	E
PC BOARD			RXD-M505USB/LS-M505
				1

DISPLAY

SW501

OPEN

SW502

DEMO

SW504SW503

O.T.EUSB

R509

R513

REC TAPE

C

B

E

Q502

R511

R510

J541

C

B

E

Q503

C521

J535

LED501

C520

R516

D502

LED502

38

C508

J533

J532

J534

J531

J530

C522

C516

J529

C517

J528

LCD501

1716

32

IC501

33

49

C513

C515

C514

J527

48

J526

J525

J524

1

64

C509

C511

C512

R538

R507

J521

J522

J523

R518

C510

R520

R519

R517

1

J520

R504

R503

C507

R508

Q501

E B

C506

C505

SW515

STANDBY

LED507

I G O

IC502

R506

J542

SENSOR

J537

J536

J538

L501

12

J502 CN1

C502

C501

J509	C518	J508
R512
		C519
D503
J510	J511
LED503		SW506

J519

	LED504	SW505
	R515
	J545
J518	LED505	SW507
	LED506	SW511
	R514

		1
		J503
J504
J505		C532
	R502
	R501
	VR501	J506
		J507
					STOP
C504				SW712
C503
	J512				FPLAY/PAUSE
AUX		SW508	X.BASS	SW514
TAPE MODE		SW512	EQ	SW518	RPLAY/PAUSE
CD/USB	J513	SW516	ALBUM UP	SW509	J516SEARCH+
		J514
					J515
TUNER/BAND	J517	SW513	ALBUM DOWN	SW517	SEARCH -

USB

CN502	1	4	D508
	1		4
			D509
		C530	Refer to the schematic diagram for the values of resistors and capacitors.

2

3

4

5

6

7

5

F

G

H

I

J

RXD-M505USB/LS-M505

1 PC BOARD

CD (SIDE A)

CN3

CN12

R7

1

3

1

4

1

5

1

4

BC48

R58

C44

EC5

BC50

R56

R55

Q9

C

R77

L6

Q20

R78

1

R70

R76

L5

R5

CN2

CN13

R67

C46

R68

B E

U9

CN11

D4

E B C

Q7

E B C

Q8

R84R81

R79 R9

28

15

R69

R8

C64

2

BE

6

R66

R65

EC29

1

R61 R62

R53 14

EC22

E B C

E B C

EC21

EC27

EC8

EC17

R54

R59

BC8

BC49

L14

Q5

C7BC11

R75

C48

BC53

Q17

EB

Q21

BE

EC10

C42 R57

C43

R60

EC15

R52

EC4

R22

BC42C8 Q6 R1

R93

R95

R96 R83

R82

R80

BC33

D5

C63

C65

R14

BC34

R63

R2

16

D2

BE

BC24

C19 C15

TP5

1

216

C10 R23

R24 C13

BC2 BC40

C50

C49 C47

EC31

163

C16 162

EC13

EC25

BC14

24

U11

1

L20

TP7

TP8

3

EC14

R28

C20

TP6 C17 C11

R26

C12

R25

R21

C9

EC23

BC23

C21

C22

BC6

C23

BC25

C24

BC21

L21

BC22

TP10

BC26

BC7

R29

CN7

R30

BC38

TP9

C26

U3

25

48

BC44

L8

TP11

C25

BC32

R20

C28

C27

C30

C29

C32

R31

C31

BC36

4

1

R64

BC28

C45

109

R51

C33

R32

54

R48

C34

R33

55

R4

R47

108

C41

C35 R34

BC27

L22

BC35

R40

BC37

BC13

BC9

BC19

BC46

BC39

BC45

C36 R35

BC1

BC30

R37

BC31

BC51

EC20

R19

EC11

TP12

Q4

XT1

R3

C37

54 50

25 26

27

R45

BC4

EC1

R18

R74

R71

EC2

R17

28

R73

L4

R72

CN43 1

BC17

U1

BC16

EC12 BC20

BC18

8 R49

EC18

C40

R46

R43

EC7C38R42

1 1

U7 U8

EC19

R44

TP14

D1

5

L7

R16 R15

E B

5

L2

I

O

G

R6 BC12

L3

BC5

BC43

R50

R41

BC3

I

O

G

R13 R10

BC47

R11

L13

EC3

BC10

U2

1

U6 4

TP13

D3

L16

F1

EC6

R12

C5

L19A

CN6

C6

1

4

6

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

6

K	L	M	N	O
PC BOARD			RXD-M505USB/LS-M505
				1

CD (SIDE B)

2

3

4

5

6

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

7

7

P

Q

R

S

T

RXD-M505USB/LS-M505

1 PC BOARD

MAIN

2

3

4

5

L

R

6

C422 C421

7

8

CN103

L210

C301

L206

L207

1

11

L211

C427

C30

2

10

D107

L208

L209

R283

R282

C190

R353

D108

C417

R411

C368

R412

R413

BE

BE R486

R503

R485

C191

C320R314

R301

R414

Q418

R415C416 R417

Q431

D412

J301

R281 R280

D301

C319

C318

C317

C309 C308

R343

R302 R357

C307

C36

BEBE

C464

J105

R344

BE

R497

R489

C419

Q419

1

14

Q430 R469

R405

Q420

R463

C470

R372

J434

C477

IC301

J433

C412

R418

R330 R331

C479

J302

J303

J304

C403

R403 R407

C401

C328

R401

C405

C438

Q406 R460

C488

R365

28

15

R461

C406

R402

E B

C340 R371

R316 C324

C322

C323

C321

R312C312

C316

C310

L410 1

C402 E B

C311

C315

C404

R419

C413

C489

R340

IC402

2 J416 R408 J417

C426

R404

J432

C425

J435

J431

J104

R367

EB

C460

R341

R368

C327

R482

R

C439

Q405

Q303

C326

C325

B E

R315

L408

R366

R310

Q301

IC403

R35

E B

R361

4

5 R35

J321

C442

R363

C

R370

1

8

C409

R369

R362

C440

C420

R491

R445

C338

R360

R359

19

18

R406

R423

R424

R420

D404

R495R494

R448

C462 EB

5

Q403

4

5

Q425 R475

C463

CN402

B E

IC401

D403

1

8

D405

J429

R440

J318

C443

C444

E B

Q404

J428

R496

R480

J430

R421

R422

R425

E B

1

L402

D406

C431

E

R458

B E

C441

C424

Q426

Q428

ZD410

CB

E B

CN406

R410

R409

R481

C418R468

R454

L401

R459

Q427

Q401

R490

J427

J406

J403

L409

J411

C448

R462

J410

R464

J450

CN401

J426

J407

J425

C480

J404

J405

L404

D410

R434

C451

ZD406

D411

J424

C449

L405

C429

C465

R474

1

E

R437

CN404

C445

C450

C437

C453

R429

R478

R477

BEBE

Q410

Q415

D413

C452

R441R439

D408

C423

D402

R470

3

R471

E B

Q414

C436

R455

R473

B

C45

R479

L407

D401

R472

B E

Q412

R

R476

R498

L403

R456

Q411

PHONE			AUX
		L414	CN302A	1
	L436	1	3
		L413	C333	C334
JK400		5
				JK302
		R483
		L412

R484

CN403