Kenwood R-V251 Manual de usuario

AV SURROUND RECEIVER

R-V251

SERVICE MANUAL

70%

Caution : No connection of ground line if disassemble the unit.

Please connect the ground line on rear panel, PCBs, Chassis and some

others.

* Refer to parts list on page 25

ON/STANDBY

PHONES

INPUT TAPE 2

(MONITOR)

TA/NEWS

/INFO. DISP. AUTO A.MEMO BANDPTY

CLOCK MODE

TIMER

SET

TUNING

MODE MULTI CONTROL

LEVEL

VOLUME CONTROL

DOWN UP

AV SURROUND RECEIVER R-V251

R D S

EON

SYSTEM

CONTROL

FRONT

SURROUND

CENTER

SUB WOOFER

PRE OUT

REAR FRONTCENTER

SPEAKERS

( 6-16Ω )

UNSWITCHED TOTAL

150W MAX.

AC 230V 50Hz

ANTENNA

FM 75Ω

GND

TAPE 2

(MONITOR) TAPE1 / MD

CD AUX

REC VCR

PLAY

REC PLAY REC PLAY

AUDIO

VIDEO

VCR

REC OUT

MONITOR

OUT DVD

VCR

PLAY IN

RLC

1 3

15 17 19

2IN

9 5 7

5 7

DVD 6CH./2CH.INPUT

16 18 20

3133393735

34 3236 38 40

Panel dressing

(A21-3777-03) Window

(B10-2367-02) Panel *

(A60-)

Knob

(k29-6727-04)

Button(R) *

(K29-)

Button(L)

(K29-6816-02)

Phono jack(4P)

(E63-0186-08) Phono jack(6P)x2

(E63-0187-08)

Lock terminal board

(E70-0120-08)

Phono jack

(E63-1137-08) Phono jack(6P)

(E63-1136-08) AC outlet *

(E03-)

Lock terminal board

(E70-0119-08) Power cord bushing

(J42-0346-08)

Metallic cabinet

(A01-3750-08)

Lock terminal board

(E21-0034-08) Phono jack(4P)

(E63-1152-08) Phone jack

(E11-0188-05)

AC power cord *

(E30-)

R-V251

CONTENTS / ACCESSORIES / CAUTIONS

Contents

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

BLOCK DIAGRAM......................................................3

CIRCUIT DESCRIPTION............................................4

ADJUSTMENT............................................................8

PC BOARD ................................................................ 9

SCHEMATIC DIAGRAM.......................................... 13

EXPLODED VIEW ....................................................24

PARTS LIST..............................................................25

SPECIFICATIONS....................................................31

FM indoor antenna (1)

(T90-0830-08) AM loop antenna (1) (T90-0804-08)

Remote control unit (1)

(A70-1306-05): RC-S0506...TE

(A70-1305-05): RC-S0505...X Battery cover (A09-0378-08)

Loop antenna stand (1) Batteries(R6/AA)

REMOTE CONTROL UNIT

RC-S0506

A B

+10

54321

09876

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ALL INFO.TEXT DISP.

TITLE

MEMO

TUNER

BAND

STILL STEP

A.MONI.

AUTO

MEMORY

RDS

DISPLAY

PTY

DISPLAY

SLEEP

NEXTPREV.

POWER

TIME

CLEAR

P.MODE

CHECK

STEREO

MUTE

SOURCE

DIRECTDSP

LEVEL VOLUME

PRO LOGIC 3 STEREO

MULTI

CONTROL

TEST

TONE

MODE

INPUT TAPE 2

(MONITOR)

FREEZE

PAL/NTSC

RETURN

TAPE

MD/LO

SELECT

P.B.C.

¶REC/ARMO.T.E.

AUTO DIGITAL

CD/VIDEO CD/LD REPEAT

FRAME/

TIME

PTY

TA/NEWS/INFO.

DISC SKIPEDIT MODE

ALL TEXT

P.CALL

ﬁ %

How to reset the microcomputer

The microcomputer may malfunction (impossibility of operation,

erroneous display, etc.) when the power cord is unplugged and

plugged in again while the unit is in ON mode with the key

pressed or due to other external causes. In this case, execute the

procedure on the right to reset the microcomputer and return the

unit to the normal condition.

Unplug the power cord from the wall outlet.

While holding the (ON/STANDBY) key depressed,

plug the power cord into the wall outlet again.

Resetting the microcomputer clears the memory you entered and

returns it to the initial condition when the unit left the factory.

Accessories

Cautions

FL DISPLAY

TUNER UNIT

K01

POWER AMP

K02

K03

K02

BD101

7815

+VH(AMP)

-30V

AVR

KEY MATRIX

STK411-210E

IC103

STK410-010E

IC104

Q119-124Q113-118

NJM2068D

IC113

HEADPHONES

SPEAKER

SW-PRE OUT

M62446FP

IC107

ELECTRIC TONE

/VOLUME

BD102

IC101

7915

IC102

Q101

-VH(AMP)

+VL(AMP)

-VL(AMP)

FILAMENTAC

FL DISPLAY

+5V(u-COM)

+10V(PRO LOGIC)

+5V(VIDEO SEL)

+7V(E.VOL)

+15V

-15V

-5V(VIDEO SEL)

-7V(E.VOL) F2

IC106(2/2)

TC9163AN

IC111

NJM2068D

IC112

NJM2068D

IC105

CDX271AQ

IC110

NJM2068D

IC702(2/2)

NJM2068D

IC603

-6ab ATT

IC702(1/2)

LC7821

IC601

LC7821

IC106(1/2)

DOLBY

PROLOGIC

IC108

NJM2279

SELECTOR

VIDEO

TUNER

AUX

MD PLAY

PLAY

TAPE/MONITOR

VIDEO PLAY

TAPE/MONITOR

REC

MD REC

VIDEO REC

VIDEO PLAY

VIDEO REC

DVD/GCH INPUT

MONITOR OUT

DVD

GCH INPUT

IC701

u-COM

FLT701

MUTE

-10ab ATT

-B LOW TAP

-B HI TAP

+B LOW TAP

+B HI TAP

GRID

REMOCON IN

ROTARY ENCODER

RELAY

VIDEO1,VIDEO2,VMUTE

E.VOL (DATA,CLK,STB)

10ab ATT

MUTE

TUNER

RESET

P/L (DATA,CLK,STB)

SYNCHRD

RDS

PROTECTION

SEGMENT

KEY SCAN

KEY RETURN

R-V251

BLOCK DIAGRAM

R-V251

CIRCUIT DESCRIPTION

Active

Pin. No. Pin Name I/O Description HL

1,2 G1,G2 O FL grid control.

3 PULL UP - Connected to VCC(+5.0V).

4 POWER DOWN I AC selector.

5 VOL. UP I Volume encoder A(CW) signal.

6 RDS CLK I RDS IC(IC703) clock input control.

7 VOL. DOWN I Volume encoder B(CCW) signal.

8 RMC I Remote control signal input.

9 RDS DATA I RDS IC(IC703) data input control.

10,11 NC - Unused.

12 PROTECTION I Detection input port of protection. ON

13 STEREO I Detection input port of stereo signal for TUNER. STEREO

14 PLL CE O PLL IC(IC402) CE signal output.

15 RCVR CLK O SEL. IC(IC601,602,106) clock signal output.

16 RCVR DATA O SEL. IC(IC601,602,106) data signal output.

17~19 KEY3~1 I Key return 3~1.

20 S. DATA I/O Serial communication data.

21 S. BUSY I/O Serial communication busy.

22 E.VOL CK O E.volume IC(IC107) clock control. ACTIVE

23 E.VOL DT O E.volume IC(IC107) data control.

24 E.VOL ST O E.volume IC(IC107) strobe control. ACTIVE

25 PLL DO I PLL IC(IC402) DO signal.

26 RCV CE I Receiver chip enable signal. ENABLE

27 DSP CE O DSP IC(IC105) XLAT.

28 AVREF - Analog power supply(+5.0V).

29 H/P DETECT I Detection input port of headphones jack.

30 SD I Detection input port of SD signal for TUNER. TUNED

31 S. LEVEL I A/D input port of signal level.

32 DSP READY O DSP IC(IC105) ready.

33 DSP DATA O DSP IC(IC105) data.

34 DSP CLK O DSP IC(IC105) clock.

35 OPT I Discrimination port of model. E,T X

36 CH.SPACE - Unused.

37 AVSS - Analog ground.

38 RESET I u-COM reset.

39 EXTAL I Main clock(10MHz).

40 XTAL - Main clock(10MHz).

41 VSS - u-COM ground.

42 TX - Sub clock(32.768kHz).

43 TEX I Sub clock(32.768kHz).

44 VDD - Power supply(+5.0V).

45 VFDP - FL power supply(-33V).

46 T. MUTE O Muting control of TUNER. ON

47 MAIN MUTE O Muting control of main output. ON

48 H/P MUTE O Muting control of headphones. ON

49 VCR MUTE O VIDEO IC(IC108) control. ON

50 DSP RESET O DSP IC(IC105) reset.

51 RCV. CE I Receiver chip enable signal.

52 - - Unused.

53 F. RLY O Front speaker relay control. ON

54 S. RLY O Surround speaker relay control. ON

55 C. RLY O Center speaker relay control. ON

1. Microprocessor : (FRONT PCB,IC701)

1-1. Pin description

Pin No. Name I/O Description

1~3 T.P O Test monitor. Normally outputs Low.(Unused.)

4 VSSO - Digital GND.

5~8 T.P O Test monitor. Normally outputs Low.(Unused.)

9 TSTO I Digital GND.

10 VDDO - Digital power supply.

11 VSS1 - Digital GND.

12~15 TST1~4 I Digital GND.

16 XRST I System reset input. Reset when Low.

17 BFOT O Unused.

18 CSL1 I Digital power supply.

19 CSL2 I Digital GND.

20 VSS2 - Digital GND.

21 AVS3 - L-ch DA converter GND.

22 AVD3 - L-ch DA converter power supply.

23 LOUT O L-ch DA converter output.

24 AVD1 - L-ch AD converter power supply.

25 AVS1 - L-ch AD converter GND.

26 L01 O L-ch AD converter LPF operational amplifier inverted output.

27 LIN I L-ch AD converter analog input.

28 AVD5 - C-ch DA converter power supply.

29 AVS5 - C-ch DA converter GND.

30 XCOUT O C-ch DA converter output.

31 AVDX - Analog power supply for master clock.

32 XTLO O Crystal oscillator circuit output.

33 XTL1 I Crystal oscillator circuit input.

34 AVSX - Analog GND for master clock.

35 XSOUT O S-ch DA converter output.

36 AVS6 - S-ch DA converter GND.

37 AVD6 - S-ch DA converter power supply.

38 RIN I R-ch AD converter analog input.

39 LO2 O R-ch AD converter LPF operational amplifier inverted output.

40 AVS2 - R-ch AD converter GND.

R-V251

CIRCUIT DESCRIPTION

Active

Pin. No. Pin Name I/O Description HL

56 POWER RLY O Power relay control. ON

57 10dB. ATT O Volume 10dB attenuator control. ON

58 ST. LED O STANDBY LED control(RED). ON

59 ST. LED O STANDBY LED control(GREEN). ON

60~69 - - Unused.

70~77 9S~16S O FL segment(9~16) and key scan(1~8) control.

78~85 1S~8S O FL segment(1~8) control.

86~88 - - Unused.

89 VDD - u-COM power supply(+5.0V).

90,91 - - Unused.

92~100 G11~G03 O FL grid control.

2. Key matrix

3. Pin description of dolby prologic IC(MAIN PCB IC105)

KS1(77pin) KS2(76pin) KS3(75pin) KS4(74pin) KS5(73pin) KS6(72pin) KS7(71pin) KS8(70pin)

K1(19pin) MODE TUNING - - - - PTY AUTO

TIMER TIMER TIMER

K2(18pin) MULTI TUNING CLOCK - MODE SET TA MEMO

K3(17pin) MULTI - INPUT

ON/STBY INPUT TAPE2 DISP BAND

R-V251

CIRCUIT DESCRIPTION

Pin No. Name I/O Description

41 AVD2 - R-ch AD converter power supply.

42 ROUT O R-ch DA converter output.

43 AVD4 - R-ch DA converter power supply.

44 AVS4 - R-ch DA converter GND.

45 VSS3 - Digital GND.

46 SCK I Shift clock input for microcomputer interface.

47 REDY O Transfer enabling signal output for microcomputer interface.

Transfer prohibited when Low.

48 T.P O Unused.

49 XLAT I Latch input for microcomputer interface.

50 RVDT I Data input for microcomputer interface.

51 XS24 I Serial data 24-/32bit slot selection.

24-bit slot when Low.(valid for slave mode)

52 VDD1 - Digital power supply.

53 VSS4 - Digital GND.

54 T.P O Unused.

55 SI I GND.

56 T.P I GND.

57 BCK I/O Unused.

58 LRCK I/O Unused.

59 VSS5 - Digital GND.

60 XMST I Digital GND.

61~63 T.P O Unused.

64 VSS6 - Digital GND.

65~72 T.P O Unused.

73 VDD2 - Digital power supply.

74 VSS7 - Digital GND.

75~80 T.P O Unused.

IC CHANNEL Lch Rch Lch Rch Lch Rch Lch Rch Lch Rch Lch Rch Lch Rch Lch Rch

IC PORT 2 27 3 26 4 25 6 23 7 22 8 21 10 19 11 18

SURROUND --- prologic stereo 6ch input prologic prologic 6ch input prologic

SPEAKER FLch FRch FLch FRch FLch FRch SLch SRch SLch SRch SLch SRch Cch SWch Cch SWch

DOLBY PROLOGIC --- XX XX

DOLBY 3STEREO --- X XXXX

DSP LOGIC --- XXX XX

STEREO --- XXXXXX

SOURCE DIRECT --- X X XXXXX

6ch INPUT(6ch) --- XXX XX

6ch INPUT(2ch) --- XXXXXXX

IC CHANNEL Rch ch Rch ch Rch ch Rch ch Rch ch Rch ch Rch ch Rch ch

IC PORT 1 30 2 29 3 28 4 27 6 25 7 24 9 22 10 21

INPUT SELECTOR --- VCR REC TAPE1/MD REC --- MONITOR TAPE2 PLAY --- ATT

CD --- --- X---

AUX --- --- X---

VCR --- X--- X---

TAPE1/MD --- X--- X---

MONITOR ON --- --- X--- X

TUNER --- --- X---

DVD/6ch INPUT --- --- X---

CIRCUIT DESCRIPTION

R-V251

4. Function table

4-1. Mode selector: KIC9163AN(IC106)

4-2. MODE/ATT selector IC: LC7821(IC602)

5. Test mode

Setting : While pressing the < INPUT key,plug the AC power cord into the AC wall outlet.

All the fluorescent display indicates.

(The all-illuminated state is cleared by pressing any main unit keys.)

Cancelling: Plug the AC power cord out from the AC wall outlet.

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(B)

FM-SG

AM-SG

MPX

(A)

(D)

(C)

AC voltmeter Oscilloscope Distortion meter

Dummy antenna

INPUT PCB

IC601

PIN 30 (Lch)

PIN 1 (Rch)

ADJUSTMENT

R-V251

No.

ITEM

DISCRIMINATOR

INPUT SETTING

(A)

CARRIER FREQ. : 98.0MHz

MOD FREQ. : 1kHz

DEVIATION : ±75kHz

SELECTOR : MONO

ANT INPUT LEVEL

: 60dBu

OUTPUT

SETTING

Connect a

voltmeter to

TP401

TUNER

SETTING

MONO

98.0MHz

ALIGNMENT

POINTS

T402

ALIGN FOR

0V±50mV

FIG.

3TUNED LEVEL

(A)

CARRIER FREQ. : 98.0MHz

MOD FREQ. : 1kHz

DEVIATION : ±75kHz

SELECTOR : MONO

ANT INPUT LEVEL

30dBu±5dB

-MONO

98.0MHz VR401

Adjust

VR401 and

stop at the

point where

(TUNED)

goes ON.

2DISTORTION

(STEREO)

(A)

CARRIER FREQ. : 98MHz

MOD FREQ. : 1kHz

DEVIATION : ±67.5kHz

PILOT : ±7.5kHz

SELECTOR : L or R

ANT INPUT LEVEL

: 60dBu

(B) AUTO

98.0MHz T403 Minimum

distortion.

FM SECTION BAND : FM

Tuner adjustment

AM SECTION BAND : AM

1TUNED LEVEL

(D)

CARRIER FREQ. : 999kHz

MOD FREQ. : 1kHz

30%DEV

SELECTOR : MONO

ANT INPUT LEVEL

30dBu±5dB

-999kHz VR402

Adjust

VR402 and

stop at the

point where

(TUNED)

goes ON.

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R272

C231

C232

C235

R263

R264

R236

R279

R276

R233

R244

C250

C249

C206

C205

C247

R232

R235

R231

R04

R288

C55

C54

R56

R54

R53

R50

R40

R44

C194

C246

R222

R220

R202

R76

C243

C244

C150

C160

C138

C139

C143

C64

R94

R13

C11

C12

C10

C09

R46

R08

R59

R72

R29

R31

R47

C42

C41

C133

R148

C65

C66

R127

R144

C124 C122

R142

R146

R137

R130

R118

R102

C67

C68

R147

C111

R125 R103

C131

C135

R145 R

C45C46

C123

C121

R143

C130

R91

R105

C105

R107

R109

R111

C107

C50

R254

R35

R192

R174

R173

R175

R196

R190

R201

R221

R219

R37

R195

R217

R215

R24

R23

R09

R10

R26

R25

R22

R21

C04

R216

C223

C226 C224

R285

C233

C229

C230

C234

C225

R277

R280

R208

C227

C207

J78

J77J76

J75

J74

R234

R06

R05 R03 R136 C53

J71

J70

J73

R133

R83

C05

C193

C245 R256 R255

R253

R281

R77

C70

R81

R168

R166

R165

C148

C149

R163

C141

C108

R110

R112R108

C106

R106

R12

C44

C295

R58

C33

C34

R62

R61

C36

C37

C241 R32

R287

C296

R92

R128

R104

C144

R140

J65

J64

J63

J62

J67

J66

J68

J60

J61

J79

C128

C132

R93

R139

C63

C112

R124

C119

R149

R126

C114

C120

R150

C113

R117

R123

R167

R164

R80

R86

R79

R85

R78

R82

R170

R169

C170

C168

C167

C169

C159

R282

C222

C182

R178

R189

R213

J72

C181

R177

C186

R181

C182

C185

R179

C183

R180

C184

R186

R185

R187

R205

R134

R135

R20

C137

R203

R204

R188

C221

C228

R283

R265

R266

R273

22 42

180

41 40

814

D10

D09

D151

D08

D201

D202

D20

IC107

IC113

IC110

IC105

IC112

IC111

J162 J102

J103

J108

J104

J29

J26

J17

J18

J27

J28

J30

J34

J15

J14

J12

J251

J252

J244

J250 J245

J246

J247

J242

J241

J33

J35

J107

J109

J110

J111

J49

J50

J48

J47

J46J45

J43

J219

J82

J81

J218

J215

J200

J214 J83

J42

J41

J44

J112

J113

J114

J116 J115

J129

J150

J152

J149

J151

J153

J154

J155

J156

J157

J158

J166

J167

J168

J164

J165

J170

J176

J174

J175

J177

J223

J222

J202

J199

J198

J197

J196

J195

J194

J193

J188

J192

J186

J185

J187 J184

J183

J182

J178

J190

J189

J224

J212

J211

J210

J209

J128

J118

K01

K02

J132

J138

J133

J234

J146

J233

J239

J135

J136

J137

J134

J140

J143

J139

J143

J208

J207

J204 J216

J206 J203

J232

J231

J230

J213

J240

J191

14 1

J142 J144

J169

J163

J171

J117

J101

J106

J54

J53

J52

J51

J40

J39

J38

J37

J36

J21

J19

J227

J229

J221

J226

J225

J238

J20

J25

J57

J16

J263

J262

J261

J260

J259

J10

J263

J254

J255

J256

J257

J258

J31

J32

J22

J243

J24

J23

J55

J120

J145

J160

J161

J235

J119

J131

J121

J122

J123

J130

J56

J105

J127

J147

J124

J125

J126

C210 C216 C215 C209 C214

C26 C27

C195

C197C198

C196

C187

C176

C188

C48

C49

C47

C175

C178

C177

C179

C180 C174

C173

C172

C171

C157

C140

C127

C103 C101

C102

C118

C126

C125

C104

C43

R69

C21

C22

C20

C19

C18

C17

C129

X101

C61

C134

C62

C31

C32

C56

C251

C52

C189

C190

C191

C109

C110

C117

C158 C163

C164

C166

C161

C165

C162

C28

C208

C13

C14

C240

C220

C236

C238

C237

R248

R247

R271

R262 R261

C218

C211

R240

C40

114

C39

C24

C23

C25

C38 C35

C07

C08

C06

R237

R213

R239

R238

R200

R132

R55

R225

R252 R251

R74

R75

R199

R197

R198

R226

C199

C30

C29

C202 R36

R270

R269

R278

R119

R19

R138

R120

R121

C115

R113

R116

R101

R292

R88

R33

R286

JK104

JK101

JK102

R11 R98

R97

R65

R64

R67

R45

R151

R152

R155

R295

R296

R156

R159

R160

CNT101

JK103

C151

R60

R63

C152

C153

C154

C155

C156

R66

C239

K03

SPK101

SPK102 R275

L101

L102 L103

L105

L104

C212

R210

R246

R209

R243

R245

R211

C51

R57

R52

C293

R194

R218

R48

R90

R73

R72

R71

R89

R141

R114

IGO

R115

C116

R122

J220

R129

R131

C147

R49

R51

R18

R193

C201

C203

R34

R42

C204

R84

R38

R207

R229

R208

C200

R224

R223

R184

R39

R176

R183

R171

R172

C69

R214

R249

R230

R43

R41

R242

R241

C58

C59

C217

C219

R268

R258

R274

R260

R259

R257

R250

R07

R95

R28

R30

R87

R02

R96

R01

R17

R154

R153

R158

R157

R162

R161

R267

126 122

BBEB

ZD102

ZD21

ZD101

ZD22

ZD12 ZD11

CN110

ZD23

ZD202 ZD201 ZD203

ZD19

ZD20

ZD204

IC104 IC103

D23

D22

IC102

IC101

D04

CN601

D02

D03

IC106

D01

Q215

Q151

Q211 Q120

Q217

Q218

Q207ZD10

Q221

Q219

CN105

Q220

BD101

BD102

CN103

CN101 IC109

CN102 CN701

Q209

IC108

Q208

Q124

Q123

Q121

Q119

Q114 Q120

Q113

Q111

Q110

Q122

Q203

Q201

Q204

Q205

Q118

Q117

Q115

Q116

Q101

Q214 Q213

Q202

Q206

PHONES

MAIN UNIT

REAR

SPEAKERS

PRE OUTREC OUT

OUTDVD

MONITOR

VCR

PLAY IN

FRONT

VIDEO

SURROUND

SUBWOOFER

CONTROL

SYSTEM

CENTER

SUBWOOFER

FRONT CENTER

ABDFHJCEGI

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

PC BOARD (Component side view)

109

R705

J784

J786

J785

J783

R706

R739

R735

R731

C708 R720 R719 R715

R768

R771

C723

R714

R713

R769

R711 J781

J782

R710

R708 R709

J787 J788

R751

R750

R749

R732

C713

R740

C454 R446

R447

C456

R431

C428

C427

C424

C403

R404

C406 C419 R424

R421

R417

C415

C410

R403

C420

R413

C472

C409

R411R408

R414

R407

R428

C416

R422

R452

C461

R453

R458

R437

R465

R439

C617

R642

R648

R641

R635

R632R631

R628R627R624

R623

R620R619R616R615

R612

R611R608

R607

R604

R603

C623

R636

J691

R436

C476

C453

R429

J430

C435

C434

C433

C432

R725

C715

R736

R734

C707 C704

C705

R762

R729 R729

R727

R721

R722

R774

R772

R770

C725

C721

R746

R748

R747

R745

C701

C720

C719

R724

R723

R738

C712

R427

R445

R449

R469

R438

R470

R633

R634

C621

C620

C619

C622

R643

R644

R638

C631 R639C635

R640 C636

C632

R637

R645R646R647

J426

J428

R460

R442

R430

C430

C423

C422

R402

C404

R405

R416

C418

R601

R606

R605

R602

R609

R610

R613

R614

R618

R621

R617

R622

R625

R626

R629

R630

C601

C602

C604

C605

C606

C607

C608

C610

C611

C609

C612

C613

C614

C615

C616

C603

C414

R418

R425

C457

R464

C452

R461 R451

C450

R415

C412

R409

R401

C417

R448

R454

R455

R761 R760

100

80 81

D722

D720

D721

D719

D718

D717

D713

D402

D601

D602

D401

D405

D404

Q407

Q408

Q402

Q401

Q405 Q406

D709

D710 D714

D707

D706

D703

D705

D701

D702

IC701

IC703

J737

J746

J745

J744

J743

J742

J741

J740

J739

J738

J748

J747

J732

J730

J731

J729 J727 J718

J719

J712

J713 J705

J702

J763

J762 J701

FLT701

J710

J643

J649

J653

J641

J642

J607

J622

J602

J651

J648

J711

J704

J703

J723

J724

J726

J720

J721

J722

J717

J749

J764

J709

J635

J534

J633

J625

J624

J623

J626

J644

J621

J611

J609

J610

J608

J606

J605

J604

J603

J601

J620

J619

J618

J617 J613

J615

J614 J630

J629

J628

J613

J612

J637

J638

J410

J412

J414

J404

J409

J434

J639

J408

J411

T401

J435

J407

J432

J425

J647

J708

J715

J714

J716

J707

J706

J725

J728

J734

C710

J733

J736

J735

J751 J759

J755

J758

J420

J421

VR401

J422

J423

J433

J406

J405

J419

J417 J415

J416

J431

J759

J760

J761

J752

J753

TA/NEWS/INFO

J754

SW722

C717

R765 X702

R764

R763

R712

R716

R702

R718

R717

R726 R725

R737

130

111

R730

R707

R741

J652

C618

C625

C637

C638 R649

R773

R744

R743

C703

C702

R704

R703

R701

R742

R753

R754

R759

C716

RMC701

C425

C421

C426

C431

C438

C440

C441

C460

C407 C405

C455

C360 C634 C629 C633

C624

C458

C469

C470

C471

C451

C448

C447

C449

C446

VR402

T402 T403

C709 C722

X703

C724

C706

C714

C711

X701

C439

R757

R758 R756

LED701

R755

R463

R444

C413

X401

R423

R435

R434

T406

T405

R426

R458

R419

R406

C475 C474

C402

R456

C401

R457

CF402

CF401

L401 L403

L402

L601

C718

55 1

30 1

FE401

ANT401

111

15 15

16 16

MODE

BAND

AUTO A.MEMO

CONTROL

MULTI

TUNING

DISP

PTY

VOLUME

CONTROL

SET MODE

TIMER

CLOCK

TAPE 2 INPUT

ON/STANDBY

(MONITOR)

ZD403

ZD402

ZD401

IC402

D406

IC601

JACK603

JACK601

IJACK602

CNT601

IC602

IC603

D716

D711

D712

D708

CNT702

NONE RDS : DELETE CN702

ZD701

IC702

D704

Q409

D715

CNT701

Q706 Q704

Q705

CN703

CN704

IC401

CNT703

Q703

Q701

CNT704

Q702

SW715

VOLUME UNIT

SENSOR UNIT

TUNER UNIT

FRONT UNIT

SW714

SW721

SW716

SW713

SW728

SW717

SW712

SW719

SW718

SW711

SW701

SW704

IN AUX REC

VCR TAPE2

(MONITOR)

PLAY REC PLAY

TAPE/

REC PLAY

ANTENNA

SW702SW703

SW705

SW706

SW707

KMOQSLNPRT

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

• Power supply PCB illust, is not printed to keep the delivery( and simple

circuit) of service manual.

PC BOARD (Component side view)

11 12

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