CASSETTE RECEIVER KRC-2902YA/G - avtoru.orgavtoru.org/_files/magnitola/kenwood/krc-2902.pdf · IC4...

© 2002-1 PRINTED IN JAPANB51-7882-00 (N) 1089

CASSETTE RECEIVER

KRC-2902YA/GSERVICE MANUAL

45Wx4HIGH POWER

KRC-2902

LOUD

PWROFF

AMEAUTO

CLK

SRC

AUD

T. CALL

MENU

WIDE BAND

REW PR

FFOG

Lever(D10-3031-04)x2

Plastic cabinet assy(A02-1486-13)

Mounting hardware assy(J21-9491-13)

DC cord(E30-4790-05)

Antenna adaptor(T90-0523-05)

Escutcheon(B07-2124-02)

Knob (ATT)(K25-1388-03)

Cassette lid(A53-1638-13)

Panel assy(A64-2520-02)

KR

C-2902YA

/G

2

BLOCK DIAGRAM

IC1

KEY

PAN 5V

MUTE

B.U. DET. B.U.

ACC

POWER IC

EQ. AMP.

CH ISO AMPNC/MPX/E-VOL.

FRONT Lch

FRONT Rch

REAR Lch

REAR Rch

J2

LCD DRIVER

LCD

MAIN

TAPE MECHA.

IC5

IC2 IC4, Q151

IC3,Q150

SP OUT

PAN IN SW

ACC DET.

P-CONT.

J2

IC1

FM+B

Q200,201

AM+B

Q202,203

AM BPF

FM BPF

Q320

Q50

Q350-353

Q53

SW 5V

Q54-57

COM+B

Q58-61

ILLUMI.

B.U. 5V

Q51,52

SYSTEM u-COM

RST SW

Q301

MOTOR SW

RST

Q260,261

ED1 Q1

FM ANT

AM ANT

RF GND

FM+B

AM+B

OSC GND

OSC GND

OSC GND

VT

PLL +B

IFC OUT

SDA

SCL

DIG GND

IF1+B

IF1 GND

S-METER

IF2 GND

SD

FM+B

SW5V

ACC DET

B.U. DET

SCL

MUTE

SDA

P CON

PAN

EL

HO

LD

L C

LK

L D

ATA

S

L D

ATA

L

FW

D/R

EV

MO

TOR

Rch

COM

Lch

MP IN

AM

MPX

OUT RR

OUT LR

OUT RFLEVEL

SCL

SDA

OUT LF

STBY

MUTE

Rch

Lch

T-MUTE

FWD

REV

B.U.5V

B.U.

8V B.U.

S M

UT

E

4

65

B.U.5V

AM+B

VDD 5V

PAC

K IN

L R

ES

ANT CON

BEEP

SVR

AMP. STBY

SVR

AC GND (BEEP)

Rch

Lch

8V

RF GND

OSC GND

IF2 +B

AUDIO OUT

8V

S-METER

SD

PLL CLK

PLL DATA

PLAYHEAD

R

L

55.6mV

B.U.5VSW5V

8V

B.U.5V

AM: 170mVFM: 400mV

TAPEPACK IN

(FF/REW)

AMP. MUTE

FF

/RE

W

B.U.5V

ILLUMI.

(X16- )

(X14- )

M

A1

5V

D200

P-CONT./ANT-CONT.

KRC-2902YA/G

3

SYNTHESIZER UNIT (X14-6872-73)

COMPONENTS DESCRIPTION

Ref.No. Function OperationIC1 SYSTEM µ-COM Controls the unit.

IC2 E -VOLUME Controls the volume and selects source.

IC3 M UTE LOGIC Controls the mute output.

IC4 POWER AMPLIFIER For the speaker output.

IC5 EQUALIZER AMPLIFIER For the cassette tape's signal.

IC6 RESET Resets the power.

Q49 A CC DETECTION SW Outputs "H" during the ACC off.

Q50 BACK-UP DETECTION SW Outputs "H" when the back-up voltage is under 9.2V.

Q51,52 BACK-UP 5V DRIVER Works when back-up current exists.

Q53 P.ON 5V SW Works during the power on.

Q54,55 8V SW Works during the power on.

Q56,57 8V DRIVER Works during the power on.

Q58,59 ILLUMI +B SW Works during the power on.

Q60,61 ILLUMI +B DRIVER Works during the power on.

Q150 E-VOL MUTE SW Works when the back-up current is detected or the changer mute works or system µ-com mute works.

Q151 SVR FORCED DISCHARGE SW Works when the amplifier mute works.

Q201 FM +B SW Works during FM mode.

Q203 AM +B SW Works during AM mode.

Q260 MOTOR +B SW Works during the tape mode.

Q261 MOTOR +B DRIVER Works when Q206 works.

Q301 CD-CH RESET SW Works when the power is reset and the reset SW works.

Q320 PANEL 5V SW Works when the back-up current exists and the panel is attached on the unit.

Q350 P.CON DRIVER SW Does not work during the power off and the ALL OFF.

Q351 P.CON PROTECTION SW Works when the P.CON is short-circuited on the GND.

Q352 P.CON PROTECTION INHIBIT SW Inhibits the protection SW in a moment during the P.CON on.

Q353 P.CON DRIVER SW Does not work during the power off and the ALL OFF.

KRC-2902YA/G

4

µ-COM (IC1 : X14-)Pin No. Pin name I/O Description Processing Operation

1 PANEL I Panel detection. "L" : Panel exists.

2 L CE O LCD driver chip enable. -

3 L RES O LCD driver reset. -

4 AVSS - GND. -

5 R DATA I RDS data. -

6 R QUAL I RDS receiving. -

7 AVREF 1 - Reference voltage. -

8 I C2 SEL 1 I Selector. "L" : Normally.

9 I C2 SEL 0 I Selector. "L" : Normally.

10 - - - -

11 L DATA L I LCD driver communication data. -

12 L DATA S O LCD driver communication data. -

13 L CLK O LCD driver communication clock. -

14,15 - - - -

16 DATA C I Changer communication data. -

17 DATA H O Changer communication data. -

18 CH CLK I Changer communication clock. -

19-26 - - - -

27 MOTOR O Cassette tape motor SW. -

28 FF/REW I Cassette tape FF/REW detection. "L" : FF or REW works.

29-31 - - - -

32 SD I Signal detection. "H":Signal exists. "L" : Signal does not exist.

33 VSS 1 - GND. -

34 - - - -

35 PLL CLK O Front-end communication clock. -

36 PLL DATA I/O Front-end communication data. -

37 AM +A O AM power supply SW. -

38 FM +B O FM power supply SW. -

39 IC2 DATA I/O E-volume communication data. -

40 IC2 CLK O E-volume communication clock. -

41 AFC O FM noise detection /Time constant SW. -

42 MUTE O Mute control. -

43 AMP MUTE O Power amplifier mute. -

44 - - - -

45 CH CNT O Changer control. -

46 REQ H O Changer request. -

47 - - - -

48 SVR O SVR control. -

MICROCOMPUTER'S TERMINAL DESCRIPTION

KRC-2902YA/G

5

Pin No. Pin name I/O Description Processing Operation49 AMP STBY O Power amplifier stand-by. -

50 BEEP O Buzzer signal output. -

51,52 - - - -

53 P.CONT O Power control SW. -

54 ACC DET I ACC detection. -

55 B.U.DET I Back-up detection. -

56 P.ON O Power SW. -

57 ILLUMI O Illumination SW. -

58 FWD/REV I Cassette mechanism FWD/REV detection. -

59 - - - -

60 RESET I System reset signal input. -

61 SEL 1 I Destination SW. -

62 R CLK I RDS clock. -

63 REQ C I Changer request. -

64 PACK IN I Cassette tape pack-in detection. -

65 KEY-REQ I Key signal input detection. -

66 SEL 0 I Destination SW. -

67 VSS 0 - GND. -

68 VDD 1 - 5V power supply. -

69 X2 - Main system clock. -

70 X1 I Main system clock. -

71 IC - GND. -

72 - - - -

73 XT1 - 5V power supply. -

74 VDD 0 - 5V power supply. -

75 AVREF 0 I A/D converter reference voltage. -

76 S METER I S-meter detection. "H" : S-meter exists. "L" : S-meter does not exist.

77 PHONE I -Navigation mute : 2.5V or more.

Telephone mute : 1V or less.

78 NOISE I FM noise detection. -

79 AV CONT O A/D converter reference voltage. -

80 - - - -

MICROCOMPUTER'S TERMINAL DESCRIPTION

KRC-2902YA/G

6

TEST MODE / ADJUSTMENT

(2-LINE TAPE)

B

A

B

A

(FWD)

(RVS)

HEIGHT(FWD)

HEIGHT/AZIMUTH(FWD)

HEIGHT/AZIMUTH(RVS)

TAPE SPEED

HEIGHT(RVS)

F ''

F

R

R

1. How to enter the test mode• Reset the unit while holding the "FM" key and preset "6" key.• All indication segments go ON at the beginning of the test

mode.

2. How to release the test mode• Simply reset the unit.• (NOTE) The test mode is not canceled by ACC OFF, power

OFF, momentary power down or the panel off.

3. Audio adjustment• Set the volume level to -10dB (which is shown as "30" on the

display).• Loudness OFF.• The BASS/TREBLE and BALANCE/FADER can be set to

the full-boost/full-cut and full-front/full-rear each by pressingthe "Track UP" / "Track DOWN" keys.

• Sound coordination doesn't appear for the feed.

TEST MODE

ADJUSTMENT

Head Angle AdjustmentHead height alignment procedure

• During FWD transport adjust screws F and F' so that line Aof 2-LINE TAPE passes trough the center of the head shieldplate (core center area)

• During RVS transport adjust screws R and R' so that line Bof 2-LINE TAPE passes trough the center of the head shieldplate core (center area)

• After the alignment above, reverse the transport directionand check the FWD alignment again. If it is deviated,perform alignment again. (Tape used : SCC-1659,manufactured by A-BEX)

A B C D E F G H I J

1

2

3

4

5

6

7

7 8

PC BOARD (FOIL SIDE VIEW) (COMPONENT SIDE VIEW) (FOIL SIDE VIEW)

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

4.3320MHz

W24

W64

W76

W78

R200

R202

W36

R55

W73

W69

W12

W99

R67

W58

W104

C4

R35

0

R37

0

W67

W57

W70

C20

9

L10

W66

W68

W4

W6

W72 W

71

W7

W85

W80

W39

W42

W45

W48

W50

W101

W102

W2

W200R

51

R65

R351

R353

R66

X1

C50

C17

C18

C16

0

C152

C55

W15

C15

C16

C16

1

C350

C35

2

C50

3

C16

2

C500

C450

C451

C15

0

C15

9

C56

C58

C53

C57

W97

W98

W103W53

W43W51

W28

W10

X2

W17

R50

1W

3

R50

2

R50

0R

261

L5

R26

0

L4

C402

C400

C401

W54

W47

W95

W93

W89

R11

9

W13

W61

W62

W14

C9

C25

0

C10

W8

W9W

33

W23

W27

W30

W32

W37

W26

W55

W56

R263

R26

2

W22

W77

W63

W65

W21

R252

W105

W52

W100

W94

W96

W92

W91

W90

W87

W59

W60

W20

W25

W29

W31

W35

W19

W11

W82

W79

W83

W40 W

38

W41

W84

W81

C3

W34

W18

W49

W46

W44

R12

0

W88

W74

W75

4.19MHzTP

5V

DG

S-MTR

PD

A

PC

K

2DA

CC

K

DT

H

DT

C

CMP2C

K

L1

RES

L8L7

R10

0

L12

L6

L3

W5

R10

7

1

6

8

1

1

5

8

16

1

9

1

2

25

24

1 5 7 6 10 9

2 3 4 8 12 11 13

L R

1

24

BE

BE

EB

BE

BE

1 11

2 12

BE

BE

A1

Q60

Q56

D370D410

D50

D405

D371

D352

Q51

Q350

D38

0

D401

D400

D56

D52

D51D55

D54

D40

8

D409

D350

D35

1

D53

Q26

1

Q201

Q203

D404

D200

D26

0

P1

IC5

D26

1

J1

J5

J4

J2

J3

IC4

D15

0

D152

D151

WH

1

D100

CN

1

X14-6872-73 (J74-1319-02)

W170

C25

1

R15

6

R15

W158

R14

R62

W159

R57

R59

W15

7

R60

C52

C16

3R

161

R15

9R

162

R16

R13

W17

4

R38

1C

380

R61

R25

1

R15

1

C214

R503

C600 C601

W17

1

R125

R12

3

C13

C14

R58

R52

R54

R106

R112

C16

4

R352

C15

4

C15

3

C35

1

TH1

R50

4

R155

R154

R15

3R

322

R40

1

R40

0

R38

0

R40

8

R40

9

R40

7

R40

6

R41

2

R41

0

R41

1

R30

3

R30

2

R30

4

R30

6

R30

5

R40

3

R30

1

R40

2

C504

C54

C502

C505

R63

R64

W16

2

C50

1

R1 C1

R20

1R

203

R150

W153

C45

2

C20

2C

204

R45

5

R453

R45

4

R451

R450

R452

R20

5

R141

R2

C2

C5

R382

C6

C157

R111

R113

R404R103

R10

8

C151

C156

C155

R16

0R206R207

C15

8

C50

6

R8

C8

R4

R6

R7

C7

R5

R133

R32

3

R11

0

R158

C101

C102 R105

C103

W161

W160

R48

R320

R32

1

R14

0

W173

W154

R124 R122

R118

R15

2

R12

1

R117

R15

7

R405

R14

3

R104

W169

W168

W167

R3

R25

0

W16

5

R49

R413

W15

6

R142

W16

6

W164

R10

1

R102

C104 W163

1 14

1528

8 14

7 1

41

1 3

45

60

1

20

80

61

21

40

1 8

16 9

BE

BEBE

B E

BEB E

B E

B E

BE

B E

B EBE

B EBE

B E

BE

B E

BE

BE

BE

B E

BE

B E

B E

BE

Q61

IC1

Q52

Q59

Q58

Q57

Q15

3

Q15

1

Q15

0

Q55

Q49

Q54

Q53

Q50

Q50

0

Q50

2

Q501

Q35

3

Q30

1

Q32

0

Q35

2

Q35

1

IC6

IC7

Q45

1

Q45

0

Q26

0

IC3

IC2

Q50

3

PL1

PL2

FMA

MA

UD

RS

T6

54

32

1AT

T

VO

L

SR

C

TI

154

CLK

D15

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

X16-1512-7x (J74-1300-02) X16-1512-7x (J74-1300-02)

C5

C2

C3

C4

R2

R3

R4

R5

R6R7

R8

R9

R21

R10

R11

R12

R13

R14

R15

R17

R18

C1

1

2441

64

65 80

40 25

11

122

1

BEQ

1

IC1

D17

J1

Ref. No addressIC1 3JQ1 4J

X16-1512-7x

Ref. No

address

Ref. No

address

IC1

5C

Q59

4A

IC2

4E

Q60

3A

IC3

4D

Q61

3A

IC4

2D

Q150

4D

IC5

4B

Q151

3D

IC6

5C

Q201

4E

Q49

4C

Q203

4E

Q51

4B

Q261

6E

Q50

4B

Q260

5E

Q52

4B

Q301

5C

Q53

4B

Q320

6B

Q54

3B

Q350

3C

Q55

3B

Q351

4C

Q56

2A

Q352

4C

Q57

3A

Q353

4C

Q58

4A

X14-6872-73

SYNTHESIZER UNIT SWITCH UNIT

A B C D E F G H I J

1

2

3

4

5

6

7

AM+B

19

23

20

21

22

AUDIO OUT

SD

S-METER

IF1+B

14

17

18

VDD 5V

IF2+B

15

16

SDA

SCL

DIG GND

10

11

12

13

OSC GND

VT

PLL+B

IFC OUT

7

8

9

OSC GND

OSC GND

OSC GND

FM ANT3

4

5

6

AM ANT

RF GND

FM+B

1

2RF GND

16 15 14 13 12 11 10 9

8 7 6 5 4 3 2 1

FL+

RL+ FL-

RL-

FR

-

RR

-

FR

+

RR

+

P-A

NT

P-C

ON

AC

C

B.U

GN

D

19231721 937 5

L1

C50 3300u16+

0.01

3.3K

1/2

W

33KR52

10K

R54

R370 4.7K

R350 4.7K

R351 1K

R35

2

3.3u25C350

+

22K

C351

0.1u

50C

352

+

1K

0.068

100u10C159

+

+

C16010u16

R15

2 1K

R15

1 4.

7K

91K

R15

3

180K

C16

2 1u

50

+

R15

7 10

0

R15

8 33

K

R15

5 43

0

R15

6

23242526

0.01C151

47u10C150

+

L3 4.7uH

0.1

C15

8R

150

4.7K

0.1

C15

5C15

3 0.

015

C15

4 0.

22

0.033

150PC157

C156

0.22

0.22

24IF1 GND

IF2 GND

0.01

C20

2

0.01

C20

4

22KR203

22K

R20

1

1KR202

1KR200

R20

5

150

35

36

4.7u

H

76

32

C209 47u10+

1

2

3

4

5

0.047C251

10KR251

1500

PC

215

00P

C1

22K

R1

22K

R2

12

11

10

9

8

7

6

5

4

3

2

1PA

N 5

W

L D

ATA

S

L C

LK

L C

E

L D

ATA

L

u G

ND

PAN

5V

RE

SE

T

ILL

GN

D

ILL

+B

ES

D G

ND

R32

2 2.

2K

R30

1 47

0

R30

2 47

0

R30

3 1K

R30

4 1K

27K 47KR320R321

100u

16C

57 +

R62

100u

10C

58 +

1KR64

1KR63

R652.2 1/2W

R662.2 1/2W

R20

7 2.

7K

R20

6 4.

7K

3 4

48 49

43

1312 2 11 60

55

C56

100u

6.3

5.6K

R61

+47

KR

60

10u10

R5822K

100

R59

C55

+

C540.01

100u16+

1KR67

50

GND7R162 47K

6

5

4

3

C16

40.

01

2

1

9

8

11

10

12

13

VDD14

+

0.02

2

4

C7

120KR7

100u

1010

0

+

100PC5

C9

R5

6.8K

R3

L IN

8

L N

F

L O

UT

7 6

C347u6.3

3

10R25

0

120KR8

C25

010

0u10

R6

6.8K

+

C8

0.02

2

C10

100u

10R

410

0

GN

D

VC

C

R O

UT

5 4

100P

C6

R N

F

3 2

+

+C4

47u6

.3R

IN1

4039

C53

37

38

F1 (10A)

R159 100K

28 27 26 25 24 23 22 21 20 18 17 16 15

AC

OU

T L

AC

OU

T R

OU

T L

F

OU

T R

F

OU

T L

R

OU

T R

R

VD

D

GN

D

SD

A

S M

UT

E

QU

AL

MU

X R

MU

X L

1 2 3 4 5 6 7 8 9 10 11 12 13 14

VR

EF

CR

EF

TAP

E L

TAP

E R

CD

R

CD

GN

D

CD

L

PH

-

PH

+

AM

MP

X

LEV

EL

MP

IN

MP

OU

T

1

C14

C13

L452

mH

56 55 54 53 52 51 50 49 48 47 46 45 44 43 4240

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

P.O

N

B.U

.DE

T

AC

C D

ET

P. C

ON

T

BE

EP

AM

P S

TB

Y

SV

R

RE

Q H

CH

CO

N

AM

P M

UT

E

MU

TE

AF

C

PLL DATA

PLL CLK

VSS 1

SD

FF/REW

MOTOR

PAN

EL

L C

E

L R

ES

AV

SS

R D

ATA

R Q

UA

L

IC2

SE

L 0

L D

ATA

L

L D

ATA

S

DAT

A C

SEL 1

R CLK

PACK IN

VDD 1

X2

X1

IC

XT1

VDD 0

S METER

R30

6 1K

2

2

TH1

P1

10R32

3

1/2W

1/2W

Q151

Q320

10KQ54,55

Q150

16

DAT

A H

17

CH

CLK

18 19 20

IC2

SE

L 1

AV

RE

F 1

L C

LK

11 12 13

28

27

4.7K

R117

R119 2.2K

R120 1K

R121 10K

1K

1K

R123 10KR122

R124

IC2 CLK

IC2 DATA

FM+B

AM+B

36

35

39

37

38

40

32

41

REQ C

KEY-REQ

SEL 0

VSS 0

AVREFO

PHONE

NOISE

AV CONT

R106

2.2K

47K

R105

6.8K

X1

C102

15P

15PC103

321

57585960

10R10

0

0.02

2

C10

4

RE

SE

T

FW

D/R

EV

ILLU

MI

55

R5547K

47K

R57C52

54

54

R353

Q351

53

4850 49 43

T-M

UT

ER

380

10K

0.01C380

22KR381

R104 47K

R14

0 47

K

2.2K

R14

2 47

K

R11

0 10

0K

R11

3

2.2K

R102

L R

ES

R30

5 1K

3

57

57

R49

100K

22K

R48

53

2131 115 7 9 13 15 17 19 23 25

TAB

RR

+

RR

-

FR

-

FR

+

FR

I

GN

D

RLI

RL+

RL-

FL-

FL+

CD

GN

D2 4

ST

BY

6V

CC

8G

ND

10S

VR

12R

RI

14F

LI16

AC

GN

D18

GN

D20

VC

C22

MU

TE

24G

ND

4.7K

R14

0.22

u50

C16

750

4.7K

0.22

u50

C18

R16

4.7K

0.22

u50

C15

R13

1u50 +

0.22

u50

4.7K

R15

C17

17 19 2321

2425

2326R15

4C

161

19S

CL

1u50C152

+

L64.7uH

4.7uHL7

L10

0.01

C21

4

58

60

RL-

BU

YEL9

TEL MUTEBRN

12

11

10

VIOL/BLK

GRN/BLK

RR+

RR-

RL-

VIOL

15

13

14

RL+GRN

16

1 3 5 7

RR

+

RL+

FL+

FL-

FR

-

RR

-F

R+

2

2

6 8

5 7

4

1 3

6 8

GN

D

4

AC

C

P-CON

B

A

BLK1

ANT. CONP. CON

BLU/WHT

BLU/WHT

RED

4

2

3

GRY/BLK

WHT/BLK

GRY

7

6

5

FR-

FR+

FL-

WHT8FL+

R26

1

R262 47K

GN

D1

PAC

K IN

2

1/2W1K

R26010K

47KR263

GN

D5

MO

T3

MO

T4

T.M

UT

E6

28 27

+B

GN

D

IC4

Q58,59

Q60,61

Q301

Q261

Q350,353

Q352

Q51,52

Q56,57

76

3 5 7 9

47K

R252

R382 47K

R51

47K

R13

3

4.19MHz

100K

R11

1R

112

W200

L84.7uH

1

2

3 4

5

C10

1

0.01

58

+B

+B

+B

+B

+B

+B

+B

+B

+B+B

+B

+B

+B

+B

+B

+B

+B

+B

+B

+B

+B

+B

+B

+8V +8V

+8V +8V

+5V

+8V+8V+8V

+8V

+8V

+8V

+5V

+5V

+5V

+5V +5V

+5V

+5V

+5V

+5V

+5V

+8V

+8V

+8V

+5V

+5V

+5V

+5V

+5V

P5V

P5V

P5V

P5V P5V P5V P5V P5V+

5V

IC3

IC5

KRC-2902YA/G (1/2)


IC4

IC2

IC1

A

IC6

(E30-4790-05)DC1

47K

47K

22K

22K

22K

47K

10K

47K 47

K

47K

10K

22K

22K

47K

22K

47K

22K

22K

10K

47K

A1

J2

D50

D26

1

D52 D51

Q50

D35

1

D370

ANT-CON.

Q350

Q351

D352

Q353

Q352Q151

D150

D15

2

D15

1

Q150

Q201

D200

Q203

ANT

J1

CN1

J3

Q320

Q55

Q54

D55

Q56

Q57

SW

Q301

Q53

Q52

Q51

D53

D54

Q58

Q60

Q61

Q59

D56

8V

IC1 :IC2 : TDA7400DIC3 : HD74HC27FP

UPD780058GC425

IC4 : TDA7386IC5 : LA3161

Q49,50,52,57,61 : 2SC2412K or2SD601A

Q51,261 : 2SB1443Q53 : 2SA1036KQ54,58 : DTC144EK or

KRC104SUN2213 or

Q55,59,352: DTA124EK or

UN2112 or

Q56,60 : 2SA2057 or2SB1548(P) or

Q201,203,350 : 2SB1277(Q,R)Q301 : DTA144EK or

UN2113Q320,351 : 2SA1037K

D50 : 1N5393G-M6 orS2V20∗ A

D51 : MA4068(N)-M orHZS7A3L

D52,200 : MA4051(N)-MD53,260,261,351,370,371

:AM01Z orERA15-01

D54 : MA4056(N)-MD55 : MA4091(N)-MD56 : MA4110-LD100,150-152,352

: 1SS133

J1X16-

2/2

D37

1

Q150UN2212 orDTC124EK or:

Q151,260,353UN2214 or

KRA103S

2SB1655(E,F) or2SB1565(E,F)

KRC103S

KRC107S

DTC114YK or:

ILLUMI+B SW

ILLUMI+B DRIVER

DRIVER SW

P.CON PROTECTION SW

P.ON5V SW

SYSTEM u-COM

DISCHARGE SW

PANEL 5VSW

8VDRIVER

EQUALIZERAMPLIFIER

E-VOLUME

FM+BSW

AM+BSW

TUNER

E-VOLMUTE SW

Q49P-CON.

P.CON

SVR FORCED

DETECTIONACC

D380D

100

PST9135NRIC6 :

MOTOR+B SW

Q260

MOTOR+BDRIVER

D260

WH1

Q261

MUTE LOGIC

POWERANPLIFIER

RESET

RESETCD-CH

SW

P.CON PROTECTIONINHIBIT SW

BACK-UP5V DRIVER

SWDETECTIONBACK-UP

SW

DSM1SD2 or

D380 MA4047-M: B LINEGND LINESIGNAL LINE

1.3V

0.8V

3.5V

0V 8.0V

3.5V

0.8V

1.3V

0V 4.4V

0V 5V

0V 5V

0V

5V0V

4.0V

4.0V

4.0V

4.0V

4.0V

4.0V

5.0V

0V 3.5V

0V8.0V

4.0V

0V 5V

5.0V

0V 5V

0V 5.0V

0V or 5.0V

0V 5V

0V 5V

0V

0V 5V

5V0V

0V 5V

5V0.9V

0V or 5.0V

5V0V

0V or 5.0V0V

5.0V

0V

5.0V

5.0V

0V 4V

0V4V

1.6V

14.4

V

4.8V

0V 7.3V

0V 7.2V

7.2V

3.3V

14.4

V

0V

7.3V

7.3V

7.3V

7.3V

7.2V

0V 7.2V

7.3V

7.3V

7.3V

7.3V

0V

7.3V 0V

0V 2.5V

5.0V 0V 4V

0V

5.0V

5.0V

+B

+B

1 2 63 4 5

ME1 (D40-1136-05)

HD1

S3

MM1

S1

S2

FWD/REV

GND

HEAD R

HEAD COM

HEAD L

T.M

UT

E

GN

D

MO

T G

ND

MO

T+

B

GN

D

PAC

K IN

Lch

1 2

FWD

REV

Rch

Ref.99

63 4 5

CAUTION : For continuedsafety, replace safety criticalcomponents only with manu-facturer's recommended parts(refer to parts list).

Indicates safety crit icalcomponents. To reduce therisk of electric shock, leakage-current or resistance measure-ments shall be carried out(exposed parts are acceptablyinsulated from the supply cir-cuit) before the appliance isreturned to the customer.• DC voltages are as mea-

sured with a high imped-ance voltmeter. Values mayvary slightly due to varia-tions between individualinstruments or/and units.

!

K L M N O P Q R S T

1

2

3

4

5

6

7

+5V +5V

+B

+B

+B

+B +B

12

11

10

9

8

7

6

5

4

3

2

1

PANEL SW

L-DATA S

L-CLK

L-CE

L-DATA L

L-RES

u-GND

PAN 5V

RST

ILL-GND

ILL+B

ESD-GND64 63 62 61 60 59 58 57 56 55 54 53 52 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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

KS

6

KS

5

KS

4

KS

3

KS

2

KS

1

CO

M3

CO

M2

CO

M1

S55

S54

S53

S52 S51

S50

S49

S48

S47

S46

S45

S44

S43

S42 S41

S40

S39

S38

S37

S36

S35

S34

S33

S32

S31

S30

S29

S28

S27

S26

S25

KE

Y

S4

S5

S6

S7

S8

S9

S10

S11

S12

S13

S14

S15

S16

S17

S18

S19

S20

S21

S22

S23

S24

KI1

KI2

KI3

KI4

KI5

VDD

VDD1

VDD2

VSS

TEST

OSC

RES

DATA L

CE

CL

DATA S

KI1

KI2

KI4

KI3

C3 0.047

C1 1000P

C2 0.047

R7 56K

C4 0.01

R21 4.7

R8

1K

R9

47K

79

80

78

76

77

78

77

79

76

R6 100

R3 100

R5 100

R4 100

R2 1K

80

KS

5

254 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

KS

4

KS

3

KS

2

KS

1

C3

C2

C1

55 54 53 52 51 50 49 48 47 46 45 44 43 42 41

PL2

PL1

1313R18

470

R15

470

R14

330

R13

R12

330

R10

470

R11

330

KS1

KS2

KS3

KS4

KS5

KI4

KI3

KI2

KI1

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

S19

S18

S17

S16

S15

S14

S13

S7

S8

S6

S9

S5

S11

S10

S12

S4

CO

M3

CO

M2

CO

M1

S55

S53

S54

S51

S52

S49

S50

S48

S46

S47

S45

S44

S43

S42

S41

S40

S39

S38

S37

S36

S35

S34

S33

S32

S31

S30

S29

S28

S27

S26

S25

54 53 52 51

S23

S22

S21

S20

25262728293031323334353637383940414243444547464850495251545355C1

C2

C34121011596871314151617181920212223

R17

3

3

0V5V

5.0V

3.3V

1.7V0V

5.0V

5V3.3V

0V5V

0V5V

1.7V3.3V

5V0V0V

5V

0V5V

5V0V

B LINEGND LINE

J1

Q1

2

1

CLK ATT

AM6

5

VOL+

FMAUDIO

D14 : ∗D1-13,15 : ∗

Q1 : DTA114EK

IC1 : LC75883E

J3X14-

1/2

LCD DRIVER

DETECTIONPANEL

AUTO VOL-

T.UP

4 3

T.DOWN

SRC

∗ ED1

RST

∗ D14

∗ D12

∗ D9

∗ D6

∗ D4

∗ D1

∗ D15

∗ D13

∗ D10

∗ D7

∗ D5

∗ D2

∗ D11

∗ D8

∗ D3

D17

: MA3062-MD17

IC1

SWITCH UNIT (X16-1512-7X)

KRC-2902YA/G (2/2)

A

LCD

10K

10K

2-71

MODEL NAME

KRC-2902YA

UNIT No.

2-70KRC-2902YG

(X16-1512-7X)

B30-1566-05

D1-13,15

B30-1565-05B30-1511-05

D14

B30-2025-05B38-1099-05

ED1

B38-1037-05

CAUTION : For continued safety, replace safety critical componentsonly with manufacturer's recommended parts (refer to parts list).

Indicates safety critical components. To reduce the risk of electricshock, leakage-current or resistance measurements shall be carriedout (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 individualinstruments or/and units.

!

2SB1565

DTA114EKDTA124EKDTA144EKDTC114YKDTC124EKDTC144EKKRC103S2SA1036K2SC2412K

2SB1548

2SB12772SB1443

2SA1037K

KRA102SKRC104S

LA3161

KRC-2902YA/GEXPLODED VIEW (MECHANISM)

Parts with the exploded numbers larger than 700 are not supplied.

A B

1

2

3

31

54

4

99

101

115

53

111102

102

12

103

111

31

33

14

102

114

5239

10

40

34

58

5739

9

35

112

113

7

626

25

HD1

56

100

106x2

373638

M120

5

1

23

22

105x2 113

112

16

1817

19 102

104

13

KRC-2902YA/GEXPLODED VIEW (UNIT)


C D

1

2

3

M3x4φ3x5φ3x10φ3x8φ3x20φ2.6x6M3x8

: N30-3004-46: N83-3005-46: N35-3010-46: N80-3008-46: N83-3020-46: N86-2606-46: N30-3008-46

ABCDEFK

B

B

B

B

(X14-)

Ax2

Ax2

737

K

K

Refer to thefollowing page.

ME1

A1 F1

244

211

242

206

201

221

766

216x2

(X14-)

J1 (X14-)

(X14-)

J5(X14-)

J4

(X14-)

772(X14-)

771

(X14-)

770

(X14-)

773

(X14-)

J2

(X14-)

L1

724

702

B

B

E

D

Cx2

Fx2

263

DC1

14

KRC-2902YA/GEXPLODED VIEW (PANEL)


E F

1

2

3

G

J

H

G

φ2x6φ1.5φ2x8 (BLK)

: N80-2006-46: N29-0205-04: N80-2008-45

GHJ

Jx2

Jx2

203

228

218

219

229

217

704

767

(X16-)

(X16-)

(X16-)

277(X16-)

278

(X16-)

279

(X16-)

ED1

(X16-)

276

780

207

230

241

253

709

249

222

205

PA1

250

246

252

251

254

248

251

255

227227

227

247

226

15

KRC-2902YA/G

16

PARTS LIST

∗ New PartsParts 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.

Ref. No.Add

New

Parts No. DescriptionDestination

KRC-2902YA/G

201 1C A02-1486-13 PLASTIC CABINET ASSY203 1F A22-2386-13 SUB PANEL ASSY205 2F A46-1748-01 REAR COVER206 1D A52-0756-02 TOP PLATE207 1F A53-1638-13 CASSETTE LID

PA1 3E A64-2520-02 PANEL ASSY

211 3C B07-2124-02 ESCUTCHEON- B46-0100-50 WARRANTY CARD- B46-0606-04 ID CARD- B58-1365-04 CAUTION CARD- B64-2109-00 INSTRUCTION MANUAL

216 1C D10-3031-04 LEVER217 1F D10-4446-03 LEVER218 1F D10-4447-03 LEVER219 1F D21-2329-04 SHAFTME1 2C D40-1136-05 CASSETTE MECHANISM ASSY

221 2D E29-1585-04 LEAD PLATE222 2F E29-1869-02 CONDUCTIVE RUBBERDC1 1C E30-4790-05 DC CORD

F1 2D F52-0006-05 FUSE (MINI BLADE TYPE)F1 2D F52-0011-05 FUSE (MINI BLADE TYPE)

226 1F G01-2525-04 TORSION COIL SPRING227 3F G01-2793-14 COMPRESSION SPRING228 1F G01-2987-04 TORSION COIL SPRING229 1F G01-2988-04 EXTENSION SPRING230 2F G01-2990-04 COMPRESSION SPRING

- H10-4685-12 POLYSTYRENE FOAMED FIXTURE- H25-0337-04 PROTECTION BAG (180X300X0.03)- H25-1111-04 PROTECTION BAG (280X450X0.03)- H54-2240-03 ITEM CARTON CASE Z1- H54-2390-03 ITEM CARTON CASE Z2

241 3E J19-5125-02 HOLDER242 1C J21-9491-13 MOUNTING HARDWARE ASSY244 3D J61-0307-05 WIRE BAND

246 3F K24-3545-04 KNOB EJECT247 3F K24-3546-04 KNOB FF248 3F K24-3547-04 KNOB REW249 3E K24-3817-03 KNOB SRC250 2E K24-3818-04 KNOB REL

251 3E K24-3819-04 KNOB SEEK252 3E K25-1387-03 KNOB AUTO253 3E K25-1388-03 KNOB ATT254 3E K25-1389-03 KNOB FM,AM255 3E K25-1390-03 KNOB VOL

A 3D N30-3004-46 PAN HEAD MACHINE SCREWB 3D N83-3005-46 PAN HEAD TAPTITE SCREWG 3E N80-2006-46 PAN HEAD TAPTITE SCREWH 1F N29-0205-04 RETAINING RING (1.5)J 2F N80-2008-45 PAN HEAD TAPTITE SCREW

K 1D N30-3008-46 PAN HEAD MACHINE SCREW

Ref. No.Add

New


263 1C T90-0523-05 ANTENNA ADAPTOR

C1,2 CK73GB1H152K CHIP C 1500PF KC3,4 CE04CW0J470M ELECTRO 47UF 6.3WVC5,6 CC73GCH1H101J CHIP C 100PF JC7,8 CK73GB1E223K CHIP C 0.022UF KC7,8 CK73GB1H223K CHIP C 0.022UF K

C9,10 CE04CW1A101M ELECTRO 100UF 10WVC13,14 CK73GB1A224K CHIP C 0.22UF KC15-18 C90-5296-05 NP-ELECT 0.22UF 50WVC50 C90-5242-05 ELECTRO 3300UF 16WVC52 CK73GB1H103K CHIP C 0.010UF K

C53 CE04CW1C101M ELECTRO 100UF 16WVC54 CK73GB1H103K CHIP C 0.010UF KC55 C90-2594-05 ELECTRO 10UF 10WVC56 CE04CW0J101M ELECTRO 100UF 6.3WVC57 CE04CW1C101M ELECTRO 100UF 16WV

C58 CE04CW1A101M ELECTRO 100UF 10WVC101 CK73GB1H103K CHIP C 0.010UF KC102,103 CC73GCH1H150J CHIP C 15PF JC104 CK73GB1E223K CHIP C 0.022UF KC104 CK73GB1H223K CHIP C 0.022UF K

C150 CE04CW1A470M ELECTRO 47UF 10WVC151 CK73GB1H103K CHIP C 0.010UF KC152 C90-2608-05 ELECTRO 1.0UF 50WVC153 CK73GB1H153K CHIP C 0.015UF KC154 CK73GB1A224K CHIP C 0.22UF K

C155 CK73GB1C104K CHIP C 0.10UF KC156 CK73GB1E333K CHIP C 0.033UF KC156 CK73GB1H333K CHIP C 0.033UF KC157 CC73GCH1H151J CHIP C 150PF JC158 CK73GB1C104K CHIP C 0.10UF K

C159 CE04CW1A101M ELECTRO 100UF 10WVC160 C90-2597-05 ELECTRO 10UF 16WVC161 C90-2935-05 ELECTRO 1.0UF 50WVC162 C90-2608-05 ELECTRO 1.0UF 50WVC164 CK73GB1H103K CHIP C 0.010UF K

C202 CK73GB1H103K CHIP C 0.010UF KC204 CK73GB1H103K CHIP C 0.010UF KC209 CE04DW1A470M ELECTRO 47UF 10WVC214 CK73GB1H103K CHIP C 0.010UF KC250 CE04CW1A101M ELECTRO 100UF 10WV

C251 CK73GB1E473K CHIP C 0.047UF KC350 C90-2598-05 ELECTRO 3.3UF 25WVC351 CK73GB1C683K CHIP C 0.068UF KC352 C90-2602-05 ELECTRO 0.10UF 50WVC380 CK73GB1H103K CHIP C 0.010UF K

CN1 E40-3240-05 PIN ASSYJ1 E04-0312-05 RF COAXIAL CABLE RECEPTACLEJ2 E58-0863-15 RECTANGULAR RECEPTACLEJ3 E58-0888-05 RECTANGULAR RECEPTACLEP1 E23-0745-05 TERMINAL

WH1 E39-0344-05 WIRING HARNESS

Z1 : KRC-2902YA Z2 : KRC-2902YG indicates safety critical components.!

!

!

!

!


KRC-2902YA/G

17

PARTS LIST

Destination


Ref. No.Add

New


L1 2D L33-1063-15 CHOKE COILL3 L40-4795-91 SMALL FIXED INDUCTOR (4.7UH,J)L4 L33-1123-05 LINE FILTER COILL6-8 L40-4795-91 SMALL FIXED INDUCTOR (4.7UH,J)L10 L40-4795-91 SMALL FIXED INDUCTOR (4.7UH,J)

X1 L77-1167-05 CRYSTAL RESONATOR (4.19M)

B 1D N83-3005-46 PAN HEAD TAPTITE SCREWC 1D N35-3010-46 BINDING HEAD MACHINE SCREWE 1D N83-3020-46 PAN HEAD TAPTITE SCREWF 2D N86-2606-46 BINDING HEAD TAPTITE SCREW

R1,2 RK73GB2A223J CHIP R 22K J 1/10WR3 RK73EB2E101J CHIP R 100 J 1/4WR4 RK73GB2A101J CHIP R 100 J 1/10WR5,6 RK73GB2A682J CHIP R 6.8K J 1/10WR7,8 RK73GB2A124J CHIP R 120K J 1/10W

R13 RK73EB2E472J CHIP R 4.7K J 1/4WR14,15 RK73GB2A472J CHIP R 4.7K J 1/10WR16 RK73EB2E472J CHIP R 4.7K J 1/4WR48 RK73EB2E104J CHIP R 100K J 1/4WR49 RK73EB2E223J CHIP R 22K J 1/4W

R51 RD14DB2H332J SMALL-RD 3.3K J 1/2WR52 RK73FB2B333J CHIP R 33K J 1/8WR54 RK73FB2B103J CHIP R 10K J 1/8WR57 RK73GB2A473J CHIP R 47K J 1/10WR58 RK73FB2B223J CHIP R 22K J 1/8W

R59 RK73GB2A101J CHIP R 100 J 1/10WR60 RK73GB2A473J CHIP R 47K J 1/10WR61 RK73GB2A562J CHIP R 5.6K J 1/10WR62 RK73GB2A103J CHIP R 10K J 1/10WR63,64 RK73GB2A102J CHIP R 1.0K J 1/10W

R65,66 RD14DB2H2R2J SMALL-RD 2.2 J 1/2WR102 RK73GB2A473J CHIP R 47K J 1/10WR104 RK73GB2A473J CHIP R 47K J 1/10WR105 RK73GB2A682J CHIP R 6.8K J 1/10WR106 RK73GB2A222J CHIP R 2.2K J 1/10W

R110 RK73GB2A104J CHIP R 100K J 1/10WR111 RK73GB2A222J CHIP R 2.2K J 1/10WR112 RK73GB2A104J CHIP R 100K J 1/10WR113 RK73GB2A222J CHIP R 2.2K J 1/10WR117 RK73GB2A472J CHIP R 4.7K J 1/10W

R118 RK73GB2A222J CHIP R 2.2K J 1/10WR121 RK73EB2E103J CHIP R 10K J 1/4WR122 RK73GB2A102J CHIP R 1.0K J 1/10WR123 RK73GB2A103J CHIP R 10K J 1/10WR124 RK73GB2A102J CHIP R 1.0K J 1/10W

R133 RK73GB2A473J CHIP R 47K J 1/10WR140 RK73GB2A473J CHIP R 47K J 1/10WR142 RK73GB2A473J CHIP R 47K J 1/10WR150,151 RK73GB2A472J CHIP R 4.7K J 1/10WR152 RK73FB2B102J CHIP R 1.0K J 1/8W

R153 RK73GB2A913J CHIP R 91K J 1/10WR154 RK73GB2A751J CHIP R 750 J 1/10WR155 RK73GB2A431J CHIP R 430 J 1/10WR156 RK73GB2A184J CHIP R 180K J 1/10W

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Parts No. Description

R157 RK73GB2A101J CHIP R 100 J 1/10WR158 RK73GB2A333J CHIP R 33K J 1/10WR159 RK73GB2A104J CHIP R 100K J 1/10WR162 RK73GB2A473J CHIP R 47K J 1/10WR201 RK73EB2E223J CHIP R 22K J 1/4W

R203 RK73EB2E223J CHIP R 22K J 1/4WR205 RK73EB2E151J CHIP R 150 J 1/4WR206 RK73GB2A472J CHIP R 4.7K J 1/10WR207 RK73GB2A272J CHIP R 2.7K J 1/10WR250 RK73EB2E100J CHIP R 10 J 1/4W

R251 RK73GB2A103J CHIP R 10K J 1/10WR260 RD14DB2H102J SMALL-RD 1.0K J 1/2WR301,302 RK73EB2E471J CHIP R 470 J 1/4WR303-306 RK73EB2E102J CHIP R 1.0K J 1/4WR320 RK73GB2A473J CHIP R 47K J 1/10W

R321 RK73EB2E273J CHIP R 27K J 1/4WR322 RK73EB2E222J CHIP R 2.2K J 1/4WR323 RK73EB2E100J CHIP R 10 J 1/4WR351 RD14DB2H102J SMALL-RD 1.0K J 1/2WR352 RK73FB2B223J CHIP R 22K J 1/8W

R353 RD14DB2H102J SMALL-RD 1.0K J 1/2WR380 RK73EB2E103J CHIP R 10K J 1/4WR381 RK73GB2A223J CHIP R 22K J 1/10WR382 RK73GB2A473J CHIP R 47K J 1/10WW153,154 R92-2053-05 CHIP R 0 J 1/8W

W156-170 R92-2053-05 CHIP R 0 J 1/8WW171 R92-1252-05 CHIP R 0 OHM J 1/16WW173,174 R92-2053-05 CHIP R 0 J 1/8W

D50 S2V20∗ A DIODED50 1N5393G-M6 DIODED51 HZS7A3L ZENER DIODED51 MA4068(N)-M ZENER DIODED52 MA4051(N)-M ZENER DIODE

D53 AM01Z DIODED53 DSM1SD2 DIODED53 ERA15-01 DIODED54 MA4056(N)-M ZENER DIODED55 MA4091(N)-L ZENER DIODE

D56 MA4110-L ZENER DIODED100 1SS133 DIODED150-152 1SS133 DIODED200 MA4051(N)-M ZENER DIODED260,261 AM01Z DIODE

D260,261 DSM1SD2 DIODED260,261 ERA15-01 DIODED351 AM01Z DIODED351 DSM1SD2 DIODED351 ERA15-01 DIODE

D352 1SS133 DIODED370,371 AM01Z DIODED370,371 DSM1SD2 DIODED370,371 ERA15-01 DIODED380 MA4047-M ZENER DIODE

IC1 UPD780058GC425 MI-COM IC



!

Q353 DTC114YK DIGITAL TRANSISTORQ353 KRC107S DIGITAL TRANSISTORQ353 UN2214 DIGITAL TRANSISTORTH1 PTH9C42BD471Q POSITIVE RESISTOR

A1 2D X86-3282-72 TUNER UNIT

276 2E B11-1376-04 OPTICAL DIFFUSER277 2E B11-0992-04 REFLECTION SHEET278 2E B19-2019-03 LIGHTING BOARDD1-13 B30-1565-05 LED (1608,PG) Z2D1-13 B30-1566-05 LED (1608,RED) Z1

D14 B30-1511-05 LED (1,RED) Z1D14 B30-2025-05 LED Z2D15 B30-1565-05 LED (1608,PG) Z2D15 B30-1566-05 LED (1608,RED) Z1ED1 B38-1037-05 LIQUID CRYSTAL Z2

ED1 2E B38-1099-05 LIQUID CRYSTAL Z1PL1,2 B30-1485-05 LAMP (5.5V 0.125A)

C1 CK73GB1H102K CHIP C 1000PF KC2,3 CK73GB1E473K CHIP C 0.047UF KC2,3 CK73GB1H473K CHIP C 0.047UF KC4 CK73GB1H103K CHIP C 0.010UF K

279 2E E29-1600-04 CONDUCTIVE RUBBERJ1 E59-0831-05 RECTANGULAR PLUG

R2 RK73GB2A102J CHIP R 1.0K J 1/10WR3-6 RK73GB2A101J CHIP R 100 J 1/10WR7 RK73GB2A563J CHIP R 56K J 1/10WR8 RK73GB2A102J CHIP R 1.0K J 1/10WR9 RK73GB2A473J CHIP R 47K J 1/10W

R10 RK73EB2E331J CHIP R 330 J 1/4WR11 RK73EB2E471J CHIP R 470 J 1/4WR12,13 RK73EB2E331J CHIP R 330 J 1/4WR14,15 RK73EB2E471J CHIP R 470 J 1/4WR17,18 RK73EB2E130J CHIP R 13 J 1/4W

R21 RK73GB2A4R7J CHIP R 4.7 J 1/10W

D17 MA3062-M ZENER DIODEIC1 LC75883E MOS-ICQ1 DTA114EK DIGITAL TRANSISTORQ1 KRA102S DIGITAL TRANSISTORQ1 UN2111 DIGITAL TRANSISTOR

1 2A A10-4328-08 CHASISS CALKING ASSY4 3B J26-4017-08 PRINTED WIRING BOARD ASSY5 2A J21-7778-08 MOUNTING HARDWARE6 2B D10-4091-08 SLIDER7 2B D13-1323-08 GEAR

9 2B D10-4200-08 ARM ASSY (F)10 2A D10-4201-08 ARM ASSY (R)12 3A A11-0930-08 SUB CHASSIS CALKING ASSY14 3A J26-4018-08 PRINTED WIRING BOARD ASSY16 1B G01-2826-08 TORSION COIL SPRING

17 1A D10-4094-08 SLIDER

KRC-2902YA/G

18

PARTS LIST

Destination


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IC2 TDA7400D ANALOGUE ICIC3 HD74HC27FP MOS-ICIC4 TDA7386 ANALOGUE ICIC5 LA3161 IC (PREAMP X2)IC6 PST9135NR ANALOGUE IC

Q49,50 2SC2412K TRANSISTORQ49,50 2SD601A TRANSISTORQ51 2SB1443 TRANSISTORQ52 2SC2412K TRANSISTORQ52 2SD601A TRANSISTOR

Q53 2SA1036K TRANSISTORQ54 DTC144EK DIGITAL TRANSISTORQ54 KRC104S DIGITAL TRANSISTORQ54 UN2213 DIGITAL TRANSISTORQ55 DTA124EK DIGITAL TRANSISTOR

Q55 KRA103S DIGITAL TRANSISTORQ55 UN2112 DIGITAL TRANSISTORQ56 2SA2057 TRANSISTORQ56 2SB1548(P) TRANSISTORQ56 2SB1565(E,F) TRANSISTOR

Q56 2SB1655(E,F) TRANSISTORQ57 2SC2412K TRANSISTORQ57 2SD601A TRANSISTORQ58 DTC144EK DIGITAL TRANSISTORQ58 KRC104S DIGITAL TRANSISTOR

Q58 UN2213 DIGITAL TRANSISTORQ59 DTA124EK DIGITAL TRANSISTORQ59 KRA103S DIGITAL TRANSISTORQ59 UN2112 DIGITAL TRANSISTORQ60 2SA2057 TRANSISTOR

Q60 2SB1548(P) TRANSISTORQ60 2SB1565(E,F) TRANSISTORQ60 2SB1655(E,F) TRANSISTORQ61 2SC2412K TRANSISTORQ61 2SD601A TRANSISTOR

Q150 DTC124EK DIGITAL TRANSISTORQ150 KRC103S DIGITAL TRANSISTORQ150 UN2212 DIGITAL TRANSISTORQ151 DTC114YK DIGITAL TRANSISTORQ151 KRC107S DIGITAL TRANSISTOR

Q151 UN2214 DIGITAL TRANSISTORQ201 2SB1277(Q,R) TRANSISTORQ203 2SB1277(Q,R) TRANSISTORQ260 DTC114YK DIGITAL TRANSISTORQ260 KRC107S DIGITAL TRANSISTOR

Q260 UN2214 DIGITAL TRANSISTORQ261 2SB1443 TRANSISTORQ301 DTA144EK DIGITAL TRANSISTORQ301 UN2113 DIGITAL TRANSISTORQ320 2SA1037K TRANSISTOR

Q350 2SB1277(Q,R) TRANSISTORQ351 2SA1037K TRANSISTORQ352 DTA124EK DIGITAL TRANSISTORQ352 KRA103S DIGITAL TRANSISTORQ352 UN2112 DIGITAL TRANSISTOR

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SWITCH UNIT (X16-1512-7x)

CASSETTE MECHANISM ASSY (D40-1136-05)

KRC-2902YA/G

19

PARTS LIST

Destination


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18 1B D10-4095-08 SLIDER19 1A D10-4096-08 ARM20 1A J19-4736-08 HOLDER ASSY22 2A G01-2827-08 TENSION COIL SPRING23 2A D10-4097-08 LEVER

25 2B D10-4098-08 SLIDER26 2B G09-2019-08 SPRING31 3A D01-0608-08 FLYWHEEL ASSY33 3A G01-2828-08 TENSION COIL SPRING34 2B G01-2829-08 TENSION COIL SPRING

35 2B D10-4099-08 ARM36 1A D10-4100-08 ARM37 1A D14-0682-08 ROLLER38 1A D10-4101-08 LEVER39 2A G01-2830-08 COMPRESSION COIL SPRING

40 2A D10-4102-08 ARM52 2A D13-1110-08 GEAR53 2B D15-0909-08 PULLEY54 3B D16-0606-08 BELT56 1B D10-4105-08 ARM ASSY

57 2B D10-4104-08 ARM58 2B G01-2831-08 TENSION COIL SPRING99 3B E39-0181-08 WIRE HARNESS100 1B J11-0618-08 CLAMPER101 3B N09-4328-08 SCREW

102 3A N09-4326-08 SCREW103 3A N09-4191-08 SCREW104 1B N09-4192-08 SCREW105 2A N09-4058-08 SCREW106 1A N09-4109-08 SCREW

111 3B N19-2082-08 FLAT WASHER112 2A N19-2083-08 FLAT WASHER113 2A N19-2084-08 FLAT WASHER114 3A N19-2043-08 FLAT WASHER115 2B N19-2038-08 FLAT WASHER

HD1 1B T31-0229-08 PLAYBACK HEAD

M1 1A T42-1025-08 MOTOR ASSY

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CASSETTE MECHANISM ASSY (D40-1136-05)

KRC-2902YA/GSPECIFICATIONS

KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.

FM SectionFrequency Range ................................... 65MHz~74MHzFrequency step ..................................................... 30kHzFrequency Range ........................... 87.5MHz~108.0MHzFrequency step ..................................................... 50kHzUsable Sensitivity (S/N : 26dB)

65MHz~74MHz .......................................... 1.4µ V/75Ω87.5MHz~108.0MHz .................................. 0.7µ V/75Ω

Quieting Sensitivity (S/N : 46dB) 65MHz~74MHz .......................................... 1.4µ V/75Ω87.5MHz~108.0MHz .................................. 1.6µ V/75Ω

Frequency Response (±3.0dB) ................... 30Hz~15kHzS/N (dB) .................................................... 65dB (MONO)Selectivity (DIN) (dB) .......................... ≥80dB (±400kHz)Stereo Separation

87.5MHz~108.0MHz ................................ 35dB (1kHz)

MW SectionFrequency Range ............................... 531kHz~1611kHzFrequency step ....................................................... 9kHzUsable Sensitivity (S/N : 20dB) ............................... 25µV

LW SectionFrequency Range ................................. 153kHz~281kHzUsable Sensitivity (S/N : 20dB) ............................... 45µV

Cassette SectionTape Speed ................................................. 4.76cm/sec.Wow & Flutter ......................................... 0.12% (WRMS)Frequency Response (±3.0dB) ..... 30Hz~14kHz (120µs)Separation ................................................... 40dB (1kHz)S/N (dB) .................................................................. 52dB

Pre-out SectionLevel/Load ................................................ 1800mV/10kΩImpedance ........................................................... ≤600Ω

AMP SectionMaximum Power ................................................ 45W × 4Power DIN45324, +B=14.4V .............................. 28W × 4

Tone SectionBass ............................................................ 100Hz±10dBTreble .......................................................... 10kHz±10dB

GeneralOperating Voltage .................. 14.4V (11~16V allowable)Current Consumption ................................................ 10AInstallation Size (W) × (H) × (D) ..... 182 × 53 × 158 (mm)Weight ................................................................... 1300g

CASSETTE RECEIVER KRC-2902YA/G - avtoru.orgavtoru.org/_files/magnitola/kenwood/krc-2902.pdf · IC4...

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Transcript of CASSETTE RECEIVER KRC-2902YA/G - avtoru.orgavtoru.org/_files/magnitola/kenwood/krc-2902.pdf · IC4...