Kenwood RXD-V757, RXD-V555, RXD-V555-H User Manual

70%

MINI HiFi COMPONENT SYSTEM

RXD-V555/V555-H/V757

SERVICE MANUAL

(XD-V555/XD-757)**

FRT cab ass'y *
(A60-)

Front glass *
(B10-)

© 2001-10 PRINTED IN KOREA
B51-5764-00 (K/K) 404

Panel(VCD)
(A60-2220-08)

Phone jack
(E11-0942-08)

Jack(MIC)
(E11-0953-08)

Knob(MIC VOLUME)
(K29-8153-08)

Cassette lid(L)
(A21-3958-08)

**Refer to page 2 if you want to know system configuration.

In compliance with Federal Regulations, following are repro­duction of labels on, or inside the product relating to laser
product safety.

Knob(VOLUME)
(K27-2470-08)

Dress ring
(A21-3957-08)

Cassette lid(R)
(A21-3959-08)

* Refer to parts list on page 28.

KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No.21 CFR 1040. 10, Chapter 1, subchapter J.

DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.

AC Plug Adaptor (1)
(E03-0115-05)

Use to adapt the plug on the
power cord to the shape of the
wall outlet.
(Accessory only for regions where
use is necessary.)

AM Loop Antenna(1)
(T90-0879-08)

"AA" size battery(2)
(UM/SUM-3, R6, HP-7 or similar)

Remote Control(1)
(A70-1574-08)

FM Antenna(1)
(T90-0883-08)

Video Cable(1)
(E30-7255-08)

RXD-V555/V757

The marking of products using lasers

(Except for some areas)

The marking is located on the rear panel and
says this product has been classified as Class

1. It means that there is no danger of hazard­ous radiation outside the product

CLASS 1

LASER PRODUCT

CONTENTS / ACCESSORIES

Contents

CONTENTS / ACCESSORIES .................................. 2

EXTERNAL VIEW .......................................................3

ADJUSTMENT ............................................................7

PC BOARD ................................................................ 8

Accessories

SCHEMATIC DIAGRAM .......................................... 16

EXPLODED VIEW ....................................................26

PARTS LIST..............................................................28

SPECIFICATIONS ......................................Back cover

System Configurations

SYSTEM MAIN UNIT DESTINATION SPEAKER
XD-V858 RXD-V757 MI LS-N90VS
XD-V757 RXD-V757 MI LS-N70VS
XD-V555 RXD-V555 MI LS-N50VS

XD-V555-H RXD-V555-H M LS-N50VS-H

Cautions

2

ANTENNA

AM

LOOP

FM
75

VIDEO

/AUX

VIDEO

OUT

SPAN
SELECTOR

230V

240V

FM 50kHz
AM 9kHz

FM 100kHz

AM 10kHz

+

+

-

-

-

L

SPEAKERS

RATED SPEAKER IMPEDANCE:

6 OHMS MIN.

R

LR

Cabinet(TOP)
(A02-3014-08)

RXD-V555/V757

EXTERNAL VIEW

AC power cord bushing
(J42-0338-08)

AC power cord
(E30-7227-08)

FM Antenna
(E70-0145-08)

Pin ass'y
(E40-8933-08)

Switch
(S62-0086-08)

Pin jack
(E63-1219-08)

RCA socket
(E02-0021-08)

Lock terminal board
(E70-0144-08)

3

RXD-V252/V252-H

Block Diagram for MPEG1 Video/Audio Processing

RAS#

Processor LA(17:0) DRAM Interface DA(8:0)

Interface LD(7:0)

Huffman

DBUS(15:1)

LCS3#, LCS#(1:0)

RISC

Decoder

DOU# DRAM

LWR#

Processor

2Kx32 ROM

DWE#

LOE#

2x32 SRAM CAS#

ACLK AUX(7:1)

AUX

Serial

ATCLK

MPEG

Audio

AIN

Serial Audio

Processor

Interface

AOUT

Interface

ARFS 64x32 ROM YUV(7:0)

ATFS

32x32 SRAM PCLK2X Screen

ARCLK Registers Video Output PCLK

VSYNC

HSYNC

TDM SEL

-

PLL(1:0)

TDM

Interface

TDMCLK

Interface

On Screen

TDMDR Display CPUCLK Misc

TDMFS

DRAM DMA

RESET#

Controller

CIRCUIT DESCRIPTION

Port Function of MPEG1 Video/Audio Processing : ES3880 (ICM2)

Port No. Port Name I/O Function

1,31,51 VCC3 - Supply voltage for 3.3V.

2 RAS# O DRAM row address strobe (active low).
3 DWE# O DRAM write enable (active low).

4~12 MA(0~8) O DRAM multiplexed row and column address bus.

13~28 DBUS(0~15) I/O DRAM data bus.

29 RESET# I System reset (active low).

30,50,80,100 GND - Ground.

32~39 YUV(0~7) O

40 VSYNC I/O

41 HSYNC I/O

42 CPUCLK I RISC and system clock input.
43 PCLK2X I/O Pixel clock: two times the actual pixel clock for screen video interface.
44 PCLK I/O Pixel clock qualifier in for screen video interface.

45~49,52,53,54 AUX(0~7) I/O Auxiliary control pins (AUX0 and AUX1are open collectors).

55~62 LD(0~7) I/O RISC interface data bus.

63 LWR# O Unused.
64 LOE# O RISC interface output enable (active low).

65,66,67 LCS(3,1,0)# O RISC interface chip select (active low).

68~79,82~87 LA(0~17) O RISC interface address bus.

81 VCC - Digital supply voltage for 5.0V.

88 ACLK I/O

89 AOUT/SEL/PLL0 I CPUCLK for the Visba : 00 = bypass PLL 01 = 54MHz PLL

90 ATCLK I/O Audio transmit bit clock.

91 ATFS/SEL/PLL1 I

92 DOE O

93 AIN I Audio interface serial data input.
94 ARCLK I Audio receive bit clock.
95 ARFS I Audio interface receive frame sync.
96 TDMCLK I TDM interface serial clock.
97 TDMDR I TDM interface serial data receive.
98 TDMFS I TDM interface frame sync.
99 CAS# O DRAM column address strobe bank 0 (active low).

Y is luminance, UV are chrominance data bus for screen video interface.
YUV(0~7) for 8 bit YUV mode.
Vertical sync for screen video interface, programmable for rising or
falling edge.
Horizontal sync for screen video interface, programmable for rising or
falling edge.

Master clock for external audio DAC(8.192MHz, 11.2896MHz, 12.288MHz,

16.9344MHz, and 18.432MHz).

O Dual-purpose pin. AOUT is the audio interface serial data output.

Pins SEL -PLL(1: 0) select phase-lock loop(PLL) clock frequency

10 = 67.5MHz PLL 11 = 81MHz PLL

O Dual-purpose pin. ATFS is the audio interface transmit frame sync.

Pins SEL -PLL(1: 0) select phase-lock loop(PLL) clock frequency CPUCLK
for the Visba. See the SEL -PLL0 pin above for the settings.
Dual-purpose pin. DRAM output enable (active low)/DRAM multiplexed
row and column address bus.

4

RXD-V252/V252-H

CIRCUIT DESCRIPTION

Port Function of DAC & TV Encoder : ES3889 (ICM3)

Port No. Port Name I/O Function

1,25,26,31,72

75,77,91,100

5,16,32,66

73, 78,90

6 DSC C I Clock for programming to access internal registers.
7 AUX0 I/O Unused.

9 AUX1 I/O Servo reverse or control pin.
11 AUX2 I/O Servo LD ON or control pin.
70 AUX3 I/O Unused.
69 AUX4 I/O Servo CCW/Close or control pin.
68 AUX5 I/O Unused.
67 AUX6 I/O Servo XLAT or control pin/VFD DO.
14 AUX7 I/O Servo BRKM/Sense or control pin/VFD DI.
18 AUX8 I/O Servo Mute/Open or control pin/VFD CLK.
20 AUX9 I/O Servo SQS0 or control pin.
34 AUX10 I/O Unused.
35 AUX11 I/O Unused.
36 AUX12 I/O Unused.
38 AUX13 I/O Serial interrupt/CD Mute or control pin.
39 AUX14 I/O Unused.
40 AUX15 I/O Unused.

8,81,83,85

93,95,97,99

10 DSC S I Strobe for programming to access internal registers.
12 DCLK O Dual purpose pin. DCLK is the MPEG decoder clock.

13 RESET B I Video reset (active low).
15 MUTE O Audio mute.
17 MCLK I Audio master clock.
19 TWS I Dual purpose pin. TWS is the transmit audio frame sync.

21 TSD I Transmit audio data input.
22 TBCK I Transmit audio bit clock.

23 RWS

24 RSTOUT B O Reset output (active low).

2~4,27~30

76

33

37 RBCK O Dual purpose pin. RBCK is the receive audio bit clock.

41,51 AGND I Audio analog ground.

42 VCM I ADC common mode reference (CMR) buffer output.
43 VREFP I DAC and ADC maximum reference.
44 VCCAA I Analog VCC(5V).

45,46 AOR+, AOR- O Right channel output.
47,48 AOL-, AOL+ O Left channel output.

49 MIC1 I Microphone input 1.
50 MIC2 I Microphone input 2.

VSS I Ground.

VCC I Supply voltage for 5.0v.

DSC D(7~0) I/O Data for programming to access internal registers.

EXT CLK I EXT CLK is the external clock EXT CLK is an input during bypass PLL mode.

SPLL OUT O SPLL OUT is the select PLL output.

O Dual purpose pin. RWS is the receive audio frame sync.

Pins SEL PLL (1,0) select the PLL clock frequency for the DCLK output.
SEL PLL1 SEL PLL0 DCLK

SEL PLL1

NC - Unused.

RSD O Dual purpose pin. RSD is the receive audio data input.

SEL PLL0 I SEL PLL0 along with SEL PLL1 select the PLL clock frequency for the DCLK output.

SER IN I SER IN is the serial input DSC mode.

I 0 0 Bypass PLL (input mode)

0 1 27MHz (output mode)
1 0 32.4MHz (output mode)
1 1 40.5MHz (output mode)

5

RXD-V252/V252-H

CIRCUIT DESCRIPTION

Port No. Port Name I/O Function

52 VREF I Internal resistor divider generators common mode reference(CMR) voltage.
53 VREFM I DAC and ADC minimum reference.
54 RSET I Full scale DAC current adjustment.
55 COMP I Compensation pin.

56,57,62,63 VGND I Video analog ground.

58 CDAC O Modulated chrominance output.

59,60 VVDD I Video VCC(5V).

61 YDAC O Y luminance data bus for screen video port.
64 VDAC O Composite video output.
65 ACAP I Audio CAP.
71 XOUT O Crystal output.
74 XIN I 27MHz crystal input.
79 PCLK I/O 13.5MHz pixel clock.
80 2XPCLK I/O 27MHz (2 times pixel clock).
82 HSYN B O Horizontal sync (active low).
84 VSYN B O Vertical sync (active low).

86~89,92

94,96,98

YUV(7~0) I YUV data bus for screen video port.

Block Diagram for DAC & TV Encoder : ES3889 (ICM3)

CD-ROM Controller

CD-ROM

Kit

Visba ES3880 Audio DAC Speakers

(Video CD)

ROM PLL

DRAM

Mic 1

Mic 2

Remote Interrupt Remote

Control Control Receiver

Echo/Surround/Vocal Assist

Volume Control

Volume Control

Visba ES3889

Companion Chip

DSC

Pre amp

Pre amp

NTSC/PAL Video

Television

VFD VFD

Driver Panel

6

RXD-V555/V757

APPLY WAX AFTER
ADJUST L312

T306

T303

T302

IC301

L354

T351

T301

L312

IC303

IC302

X352

TO ANTENNA TERMINAL

75 Ω

75 Ω

37.5 Ω

S.G

(50 Ω )

(50 Ω )

(50 Ω )

TO GND

* CENTER FREQ. MARKER 10.7MHz

* CFM GOOD AND MAX 'S'

CURVE IS OBTAINED.

ADJUSTMENT

NO. CHECKING ITEM SG 'N' SET FREQ

1.

FM FREQ (TP301) GIVEN SPEC

COVERAGE

FL 87.5MHz

FH 108.0MHz (TP301) 7.8V ± 0.8V

2. FM IF - 10.7MHz

3.

FM FREQ.

TRACKING (TP302) WAVEFORM APPEAR.

- 98MHz

CONDITION : AM MOD 30% DEV 400Hz

NO. CHECKING ITEM SG 'N' SET FREQ

1.

AM FREQ (TP301) IS WITHIN GIVEN SPEC.

COVERAGE

2. AM IF FL

3.

AM FREQ.

TRACKING (50dB)

FL 531KHz

FH 1602KHz (TP301) 8.8V ± 0.5V

990KHz T351

(50dB) (TP302) POINT FROM AC VOLTMETER

990KHz

FL

ADJ

POINT

T301

T302

(TP302)

L312

SPEC REMARKS

1.3V ± 0.1V

-

-

ADJ DC VOLTAGE

POINT SPEC

T306

1.1V ± 0.1V

-

(TP302)

-

ADJUST UNTIL VOLTAGE IS WITHIN

CONFIRM VOLTAGE IS WITHIN
GIVEN SPEC.
ADJUST COIL T302 UNTIL MAX.
OUTPUT

ADJUST L312 UNTIL MAXIMUM

REMARKS

ADJUST UNTIL VOLTAGE

CONFIRM VOLTAGE IS WITHIN
GIVEN SPEC
SP OUTPUT

ADJ T351 UNTIL MAX

î

CONFIRM MAX. OUTPUT.

Adjustment Parts Configuration

ANT DUMMY CIRCUIT FOR FM

7

ACEG IBDFHJ

DM1

D22

D21

ZD1

ZD61

CM50

RM63

R97

RM21

RM15
RM27

CM22

RM49
CM20
RM26
RM16
CM19

CM18

RM22
RM23

R110

R48

R99

R98

R111

C55
R50

R51
R52

R53

R54

R11

C22

C81

R80

C29 C82

C25
R95
R94

R116
R115

RM28
CM37
CM40

CM31
CM30
CM29

RM45

RM41

RM25

RM34

RM36

CM35

R68
R67 C80

RM68

RM73

RM76

C72

R72

RM47

R77

R76

R75

C77

C76

C75

R78

R71

R73

RM1

RM2

RM3

RM77

RM5

RM6

RM78

RM7

RM8

CM25

CM4

CM3

RM79

CM17

R58

RM13

RM10

CM8

CM14

CM9

C83

R112

C84

R117

C46

R113

R114

R118

R52

R8

C17

R92

R93

R86

C44

C53

R47

R21

R22

C52

C78

C71

C73

RM75

RM72

RM71

RM70

RM69

RM9

RM12

RM74

RM65

RM67

CM54

CM55

RM66

RM53

RM60

RM51

RM52

CM49

RM61

RM58

RM50

RM56

RM62

RM4

CM39

RM35

RM54

RM57

CM47

RM55

CM46

BE

EB

Q9

EB

Q10

EB

Q2

Q3

BE

Q1

BE

QM2

BE

QM4

BE

QM3

BE

QM1

LM2

LM3

LM1

L62

L61

CM5

CM21

CE1

CM32

C49

C50

C47

C54

C11

C6

C88

C28

C87

CM27

CM38

CM36

CM56

CM34

C45

XL2

C24

CM23

RM64

CM51

CM7

CM1

CM52

CM2

CM24

CM48

CM10

CM13

XL1

CM43

CM12

CM16

RM20

RM18
RM17
RM19

R4

C12

R3

C14
C13

C18
R7
R6

R5

R42

CM28

R55

R56

C20

R79
R13

C23
R12

C26

C42

C27

R44
R35

R37
R38
R39

R40
R45
R46
R17

R16
C30

R15

CM26

RM59

RM14

CM44

CM45

CM41

C64

CM57

C51

C31

CM42

CM53

CM11

RM81

RM80

CM15

RM30

RM31

RM32

RM33

CM33

RM43

RM42

RM44

RM40

RM39

RM38

RM37

RM24

C19

R14

C34

C85

C86

R20

C21

C7

R10

C8

CM6

RM11

BE

CNP2

CNP12

CNP1

CNP11

CNP10

CNP3

CNP4

CNP13

CNP9

Q4

QM5

QM6

1

30

80

81 100

50

31

51

1

19 11 1 692

4

8

5

1

8

1

7

1

21

42

22

1

15

30

16

1

1

1

14

6

6

20

40

21

1

30

80

51

3150

10081

1

16

32

17

124

64

65

80

40

25

41

ICM3

IC6

IC3

IC1

ICM1

ICM2

ICM4

IC2

CK12

CK10

CK14

CK13

CK16

CK41

CK51

RK45 RK46

CK48

CK46

RK42

RK41

CK45

RK43

CK47

RK4

RK3

J4

RK12

B

E

CK43

RK39

RK38

RK14

RK13

RK15

RK40

RK36

CK44

RK11

RK10

RK9

CK35

CK34

CK33

CK3

CK27

RK37

CK23

CK24

CK21

CK19

CK42

CK25

CK26

RK2

CK30

CK54

CK28

CK29

CK50

RK50

RK48

CK53

J2

CK52

CK9

CK11

CK8

CK7

CK6

CK2

RK1

CK1

CK31

CK22

CK20

CK18

CK17

CK15

VRK1

J1

RK47

CK49

RK44

RK49

RK5

RK8

RK7

J3

KR602

RK601

JK670

JK1

WT902

ZDK1

CNPK1

QK1

DK1

DK2

1

1

15

1

10

21

4222

4

85

ICK2

ICK1

MIC UNIT

PHONES

MIC

MIC

LEVEL

PC BOARD (Component side view)

1

2

3

4

5

6

7

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

8

9

K LNPRTMOQS

R633

R634

R631

R632

R863

R875

R619

R618

R606

R611

R612

R621

R622

R615

R616

R861

R880

R879

R878

R873

R870

R614

R380

R379

R372

R383

R385

R376

R359

R381

C318

R373

R374

R352

C353

R323

R353

R355

R388

R351

R362

R361

R356

R377

R336

R360

R393

R395

R378

R350

R122

R142

R115

R167

R162

R108

R134

R140

R136

R123

R145

R146

R113

R114

R139

R135

R141

R121

R125

R104

R107

R106

R105

R103

R124

R109

R101

R110

R138

R112

R137

R131

R166

R126

R153

R132

R605

R620

R617

R868

R869

R874

R311

R613

R169

R172

R171

R173

R170

R174

R156

R608

R607

R638

R637

R120

R301

C861

C612

C636

C635

C615

C616

C338

C337

C397

C392

C381

C387

C385

C323

C336

C395

C355

C356

C334

C335

C354

C399

C301

C351

C342

C361

R316

C316

C317

C366

C363

C382

C330

C318

C386

C388

C108

C120

C111

C132

C140

C119

C131

C139

C113

C127

C106

C107

C105

C102

C101

C112

C611

C645

C866

C332

C350

C632

C631

C114

C369

MJ309

MJ306

C644

C643

MJ101

MJ1

MJ310

C306

C312

R325

R322

MJ308

C324

C313

C315

C303

C314

MJ307

R302

R365

C310

C311

C309

C308

R313

R327

C305

C304

MJ301

MJ314

Q863

Q862

Q865

Q604

Q605

Q603

Q606

IC860

IC101

D861

D862

DV601

DV602

D305

DV302

DV301

JK601

JK671

BI671

SW601

IC302

Q360

IC303

IC301

D301

BF301

D302

D304

D303

Q122

MAIN SECTION

Q121

Q108 Q107

Q124

Q126

ZD851

Q111

Q110

Q128

CNP101

Q109

CNS102

Q106

Q104

Q105

Q103

IC601

Q852

Q851Q850

CNS901

BI11

CNP701

Q864

SO301

FM ANT.

AM

AUX IN

CNP301

C627

C628

C864

C863

C618

C617

C859

C855

B'

C852

C856

C602

C606

C619

C629

C630

C621

C620

C622

C623

C625

C626

C624

C613

C614

R855

R856

R852

R853

J858

R866

R867

J604

C850

C860

J855

R382

R392

R391

C394

T303

C380

C307

TP301

C391

C396

ZD351

C398

CF351

C352

C362

T302

X351

C364

CF352

T351

CF302

L352

L354

FE301

C370

C393

C319

X352

L351

C358

C357

C371

C372

C368

C367

T306

J315

J311

J328

J304

J313

J312

R375

C331

C374

C373

R357

J310

J309

J307

R384

R387

J305

J306

J308

J314

J320

R370

R309

R314

J327

L312

R358

J317

R368

J628

J319

C365

C320

C146

C128

R158

C151

C121

C133

R111

C134

C122

C150

C118

C117

R117

R118

J104

R157

R119

J108

J102

J107

R154

J101

R160

R155

L104

J105

R164

J615

C153

C154

C135

C136

C124

R168

C116

C115

C145

C607

C609

J621

J620

R610

J622

J610

R623

J608

J607

J611

J672

J656

R626

J612

J654

J857

J647

J649

J854

J645

J669

J657

R627

J670

R625

J653

R609

J624

J623

J863

CV601

J613

J634

R628

J629

J609

J660

R629

J635

J850

J666

J630

J646

J667

J678

J638

J662

J665

J663

J664

J641

J642

J644

J671

J673

J674

J650

J860

J643

J637

J617

J856

J616

C608

C610

J679

J661

J677

J676

J659

J658

J851

J640

R865

LG1

J852

J626

J627

C123

J103

J618

J652

R624

J106

J614

R871

J651

J861

J606

J605

J859

J668

J316

C865

C141

C142

C152

J631

R102

J655

J603

C605

J639

J648

C867

R363

R364

J625

J864

1

2

A

A

R

L

C641

C642

TP302

BE

O

R854

1

24

12

13

1

4

5

8

1

7

16

13 1

1

12

24

13

1

25

2

26

1

11

12

22

1

12

13

24

EB

E

B

E

B

E

B

E

B

E

13

B

B

E

B

E

B

E

B

E

EB

E

B

B

E

B

B

B

E

E

E

B

E

B

E

B

E

B

E

E

B

B

EB

Q302

EB

GI OGI

2

1

1

19

3

E

B

T302

DV302

PC BOARD (Component side view)

1

2

3

4

5

6

7

1110

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