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CASSETTE RECEIVER

KRC-28YG/YA
SERVICE MANUAL
© 1999-11 PRINTED IN JAPAN B51-7546-00 (N) 1580

MECHANISM EXTENSION CORD W05-0477-00 (7P) W05-0609-00 (10P) CASSETTE LID (A53-1638-13)
EJECT A.ADJ

PANEL ASSY (A64-1909-02)

SRC
PWR OFF MONO

KRC-28

40W X 4

LOUD

B.S

REP

T.CALL

AUTO AME

CLK ADJ

FRONT GLASS (B10-3140-01)

ESCUTCHEON (B07-2181-02)

DC CORD (E30-4790-05)

LEVER (D10-3031-04)x2

PLASTIC CABINET ASSY (A02-1486-13)

ANTENNA ADAPTOR (T90-0523-05)

MOUNTING HARDWARE ASSY (J21-9491-03)

TAPE L/R

COM+B

S MUTE

KRC-28YG/YA

OUT

MOTOR

PACK IN

T MODE

FWD/REV

DSI

LCD DATA IN

REMOTE

LCD DATA OUT

LCD CE

LCD CLK

PANEL ON/OFF

RST

MODE

REV

5

LCD

10

2
IC2
COM+B AM

ANT J1

(AM) (FM) KM:360mV 168mV E:190mV 162mV

A1
MPX LEVEL MP IN OUT LF OUT RF OUT LR OUT RR SDA SCK SCK SDA

IC4 POWER IC SP OUT

E-VOL

(TAPE)1708mV (FM) KM:1600mV E:1100mV (CD-CH)3635mV (AM) 615mV B.U. 14V 830mV

FM ANT

AM ANT

IC1

4ch

FM+B

AM+B

Q201
SVR

IC7
AMP MUTE PWR STBY

SVR SW

SVR MUTE STBY

B.U. 5V

MUTE DRIVER

S-METER

S METER

Q41-44 SYSTEM u-COM Q121
ACC B.U. FM +B AM +B

AUDIO OUT

J5/6 PRE OUT

PRE MUTE MUTE

PLL

PLL DATA PLL CLK

IC6

(TAPE)1642mV (FM) KM:1500mV E:1060mV

(CD-CH)3495mV (AM) 570mV 780mV

SUB MOTOR PHONE ILL ON

SUB+

SUB-

J2 TEL-MUTE Q116,117 ANT-CON Q94-96 P-CON
341mV

ANT-CON P-CONT ACC DET Q118 B.U. DET B.U. ACC

BLOCK DIAGRAM

IC5 DSI PANEL ON/OFF
B.U. 5V TAPE L/R

Q105

Lch

COM

Rch

EQ AMP Q104 PAN 5V

SUB M

MAIN M

Q84,85 Q101
P.ON 5V COM+B

M2

M1

8V AVR P.ON 5V Q80,81
B.U. 5V

Ref.94 T-END

Ref.105 Ref.95 STBY PACK IN

B.U. 5V

Ref.103

Ref.102

FWD

Q87-89 RST SW ILLUMI AVR Q92 AM+B Q93 FM+B

Lch

HD1

Rch

IC1 LCD DRIVER WITH KEY MATRIX

KEY

KRC-28YG/YA
CIRCUIT DESCRIPTION
(X14-) IC1 : SYSTEM u-COM PORT No. PORT NAME I/O
1 XIN 2 TEST 2 3 LCD DATA IN 4 LCD DATA OUT 5 LCD CLK 6 STBY 7 T END 8 SDA 2 9 SCL 2 10 REQ H 11 DATA C 12 DATA H 13 CH CLK 14 REQ C 15 CH CON 16 LCD CE 17 AM+B 18 FM+B 19 MUTE 20 ILLUMI 21 AMP STBY 22 SVR 23 P.CON 24 ANT CONT 25 SUB+ 26 SUB27 28 SEL 2 29 SEL 1 30 SEL 0 31 VDD 32 N.CAN 33 MOTOR
3436

FUNCTION

(X14-) IC1 : SYSTEM u-COM PORT No. PORT NAME I/O
41 42 MS CONT 43 44 BEEP 45 PANEL 46 AMP MUTE 47 CRSC 48 PACK IN 49 FWD/REV 50 SDA3 51 SCL3 52 METAL 53 DOLBY 54 AM IF CONT 55 SD 56 REMOTE
5760

FUNCTION

I I O O I I

Clock input GND LCD driver data input LCD driver data output LCD driver clock output Tape stand-by SW Tape end SW

O O I O I I I O O O O I I I I I I I I I I I I

Beep output(2.08KHz) Panel ON/OFF detection Mute Pack-in detection Tape FWD/REV PLL/EEPROM data line PLL/EEPROM clock line Metal mode ON/OFF Dolby AM IF count judgement SD input Remote controller Mode pulse input Telephone mute input ACC detection Back Up detection Tape signal detection FM band SD detection Hold Detection GND GND VDD GND GND GND GND Clock output

I/O Data line to E-VOL. O O I O I I O O O O O O O O O O O O I I I I O O O O Clock line to E-VOL. Changer request output Changer data input Changer data output Changer clock input Changer request input Changer control LCD driver Chip Enable output AM power supply control FM power supply control Mute output for audio circuit Illumination on Stand-by output to power amp SVR discharge circuit control Power control Tuner ANT control Sub motor+output Sub motor-output Destination discrimination 2 Destination discrimination 1 Destination discrimination 0 VDD Noise canceller setting Motor-ON output Disable System Indicator Tape equaliser mute output Power on -

-

61 T MODE 62 PHONE 63 ACC 64 BACK UP 65 MUSIC 66 S-METER 67 HOLD 68 SNS 69 LCTR 70 HCTR
71, 72

-

73 VDD 74 AM IN 75 FM IN 76 VSS
77, 78

-

-

79 TEST1 80 XOUT

37 DSI 38 EQ MUTE 39 P.ON 40 -

3

KRC-28YG/YA
ADJUSTMENT
BALANCE/FADER/BASS/TREBLE:CENTER T.ADV/METAL/DOLBY NR/AUTO:OFF No. ITEM INPUT SETTINGS OUTPUT SETTINGS RECEIVER SETTINGS ALIGNMENT POINTS ALIGN FOR FIG.

CASSETTE DECK SECTION
TCC-153 10KHz Head azimuth screw (FWD/REV) (ME1) Adjust so that output level in playing "FWD" and "REV" becomes maximum each.

1

AZIMUTH

SP OUT

TAPE PLAY

(b)

F/E

(b) AZIMUTH

FWD

REV

FRONT
4

A

B

C

D

E

F

G

H

I

J

1

PC BOARD (COMPONENT SIDE VIEW)
X13-9672-7X
VOL. DOWN VOL. UP

X14-6162-71
PRE OUT
R1

D1
ATT

R22

D22
C3
RST C7 4

13 11 12 8
3

4 3 2 7 5 1

W24

W23

W22

W38

R185

R34

R33

2
D26
2

W13

R184

R405

R406

R408

D16

R35

R407

R404

R409

R411

D4
R2

W20 C48

D84 D11

R256

R22

R23

R21

D408

R250

L1 W1

Q201
BE
C46 C47 C203

C202

R48

C45

R44

Q44
B E

Q41
EB E

2

C13

D6

D411
D5

R40

W34

W33

W30

W32

W31

W29

W18

W17

R258

W36

C15

R42

R46

W37

R45

C12

C204

R257

D17

D85

D403
3

R175

C16 C65 W27 C17

C18

R195

C11

R177 C122

C67

Q92
E E E B

D3
D6

E

L6

L7

3

D20

W15

W14

Q42

B E

R39 R41

B

Q43

R47

R38 R37

R43

W25

R36

1

R410

R16

D1

1

R176

W35

W12

D19

17

32 33 24

R415

R194

E

L5

16

R27 C88

W26

28

15 C66 EB

B Q91

Q117
W3 R26
B

Q94
B C86

Q95
B R29

W28

R251

R179 R178

R207

Q93 D90
C208

B

D2

D3

J2 J4
W2 16 8 9 10 6 9 1

TH1

IC4
2 1 24 25

C170 W21

D7

J6

J5 J1

R17

IC2
1

C205

C43

D4

D5

R24

R193 R196

B

Q90

X86 1

14

8

Q96

4

R182 C131

D86
E B

R28

Q121
R253 R255
1 C68

B E

IC2

C211 R90 L3

Q119
C195 R67
14 C70 C194 C193

R25

C20

C19

B E

D7 64
C4 C1

49

R30

E

C87

C85

4
D24
5

1

IC7
C133 1 7

48 25

E

Q1
BE

EB

R192

L2 DOLBY CMP C212 C4 L G R 3

E

B C83 R154

R153

C5 R19 R18

R71

D82

R63

B

D8

R64

D25
R14

IC 1 2

Q

R4

C81

1
38

address 4A 2B 4A

D81
C80 R70

C127

EB E C82

C69

Q80

Q118

R191

Q81

D80

Q97

IC 1 2 4 5 6 7

CN5 CN1
1

1 C8 R12

EB

Q84

R1

B EB

EB E R60

C84

R65

C125

6

CN2

5

Q85 Q82

R61

C124

IC5
20 21 C55

R3

R62

Q103
B E

11

40

C132 R187

R6 C3

C1

7

C110

R50

C59

Q101 D18

R10 10 R58 1

C6

R2

C2

Q116

C126

R8

R14 VR2 R

R337

C57

D12
15 14 EJECT

R180

D9

R412 1

D21
X1 (4.50) R145 C101 C102
R146 80 1 C111 61 60

31 30 C56 R52 R9

R5 C123 R7 VR1 L 10 C7 R13 R11 23

R413

D333

R59

R142 R107

R51

EB

C128

R129

R53 C5 C61

Q83

R186

R54 R55

B

Q336

R336

D83

R77

R338

CP4 R143

D332

CN4
R122
1 2

AUTO

Q89
EB B

E

D13 D21

Q335
B
AUD R5 R7

Q88

R106 R340 C104 R414 R339 R341

IC1
R418 R417 R101 R102

R127 R103 CP2 CP3 CP1

R135

C336 1 10

E
C8

EB

R124

1 CLK C6

Q86
B E

R416 R419 24 25

R123 R105 R104 41 40

R56 C60 R57

6

D10

2

Q87

C105

IC6
5 6

R114

D17
FM SRC

R126 B E R125

Q104
E B 14 15

W5

J3

2 1

D8
D14
AM

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

Q address 6E 4G 1F 5G 6H 4F 41 3H 42 3H 43 3H 44 3H 80 4C 81 4C 82 5E 83 5F 84 5E 85 5E 86 6D 87 6D 88 6C 89 6C 90 3H 91 3H 92 3H 93 4H 94 4C 95 4D 96 4D 97 4D 101 5F 103 5F 104 6F 105 7E 116 4C 117 4C 118 4E 119 4G 121 4G 201 3G 335 6C 336 6C 337 6D

IC1
C2 R13 R12 R11 R3 R4 R6

E

Q337

C54

E

B

Q105

R119 R120 R121

5

R149

R157

R156

C337

D15

D11

D16

6

K

L

M

N

O

P

Q

R

S

T

1

PC BOARD (FOIL SIDE VIEW)
X13-9672-7X
PRE OUT
D3 D2
VOL. UP VOL. DOWN D1

X14-6162-71

R1

TH1

IC4
ATT

J2 J4
W24

R22

24
D22
C3 R17

2 1 W2 9 1
R185

25
R33
RST

16 8

2 3 4 1 5 7

8 12 11 13 6 10 9

C7 4

J5 J1

J6

W38

IC2

2
1

R34

W21
W13

D26

2

R36 W12

C43
R43
R16

C205

W22

W23

3

D7

C170

R176

D1

R408

R35

R411

D4

R410

R2

R48

C45 C202 C203

C48

R409

R404

R47

R44

R38 R37

R256

D16

W20

W25

D84 D11

R406

R405

1

R407

1

R184

W35

R21

E
R41
2

B
R39 R40

R250

BE

Q41 Q44
E B E

Q201
C46 W1

L1

R23

R22

D408

D6

W29

W30

W17

W31

W33

W14

W15

W18

C15

R258

W36

R45

R195

Q92
B
E
3 32 24 33 17

C67 R257

C204

W37

R46

R42

L7

L6

3

Q43

B Q42

W32

W34

D5

B E

C47

C13

D411

D20
R177 C122 C11 C12

D85

D17

E

C18

C16

R175

D403 D5 D4

X86 1

Q90
B

D6
16

B E

R193 R196
R194

C65 C17 W27

D3
R24 R27
E

L5

Q91 B Q93

D19

E

15 BE C66

28
R207 R251

W26

C88 8 14
R29

R415

IC1

C208
4 1

D90

B

R90 L3

C211

IC2
1

C131 R182

R255

C85

C19

C20

C2

Q1
EB

R71

R13 R12

Q84

R11

R14

R2

C6

C8

C59

38

R10 1 R58 10 40
R3

C126 R50
C125 R65 C124

R14
C1
6

R6 C3

R1

11

Q103
E B

Q101 D18
C132 R187
R180

C84 R62 R61

C82 BE B C110 7

E BE R60

R3

5
D12
EJECT 14

C123

R5 R7
R59

C57

D9
15

21

R53 C5

X1 (4.50)

C101 C102

R51

23 R11 R13

VR1 L 10 C7
C337 R122

C128

R145

R52 R9

R186 R129

Q83
BE

D21
R146 61 60 C111 80 1

R412 R413 1

R77

Q337

AUTO

B

D13 D21
AUD

D10
2 1 C6 CLK

C336 10 1

R103 CP2 CP3
R57 C60

R101 R102

R418 R417
R124

6
C8

R56

EB

R5 R7

IC6
6
R156 R157

CP1

R123

R416 R419 24 25
B E R126 R125 R114

Q86

Q87
BE E

5

R105 41 R104 40

D15

Q104
R149

D17
SRC FM

B
R4

E W5

D16

R6

2
D11

J3

14 15

1

Q105

R121 R120 R119

D14

D8

AM

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

13

B

R341 C105

R339

B E Q88 B

E

1 2

R143 R135 R127

IC1

R106 R340 C104 R414

Q89

Q336

D83

CN4

R55

C55

D332

CP4

R107 R338
E

B

E

Q335

R336

R54

D333

C61

R142

R337

C54

VR2 R

31 C56 30

20

CN2

IC5

Q82 Q85

C81

R12

1

R8

R4

D8

C2

1

B

B

CN1

BE

R64

D82

R63

1 2

4L 2K 4L

5

C212 C4

C127

R153

IC

Q address

D25

3

E

C4 C1 C5 R19 R18

D24

R191

C69

R

G

L 1 CN5

Q118
R154

Q80
E

Q81

DOLBY

C194 C193

R192

BE

BE

L2

7

1

Q97

D80
C83

D81 Q116
R70 C80

CMP

BE

R25

64 D7

R30

49

R67 C195

4

R253

25 48

14 C70

C68

C133

B

E

C87

E

E

W3

IC7

Q96

R26

Q119

E B

Q121

R179 R178

W28 R28

Q95
C86

Q94
B

Q117
B

D86

IC 1 2 4 5 6 7

Q address 6Q 4O 1P 5O 6N 4Q 41 3N 42 3O 43 3N 44 3O 80 4S 81 4S 82 5Q 83 5P 84 5Q 85 5R 86 6R 87 6R 88 6S 89 6S 90 3N 91 3N 92 3N 93 4N 94 4S 95 4R 96 4R 97 4R 101 5P 103 5P 104 6P 115 7R 116 4S 117 4S 118 4Q 119 4O 121 4P 201 3P 335 6S 336 6S 337 6R

14

A

B

C

D

E

F

G

H

I

J

1
RL+ RLRRRR+ 16 8 15 7 14 6 13 5 12 4 TEL MUTE 11 3 10 2 9 1 BU14V FL+ FLFRFR+ ANT CONT P. CONT REAR R 13 5 12 4 11 3 10 2 9 1 ANT CONT P. CONT 16 8 REAR L 15 7 FRONT L

E

CH IN

J4
1 5 9

1 2 3 4 5

REQ H 6 GND 7 B.U. 8 CON 9 MUTE 10

CH GND 11 DATA H RST 12 Lch Rch 13 CLK REQ C DATA C

F1 (10A) (F52-0006-05)

SYNTHESIZER UNIT (X14-616X-XX)
5V

DC IN/SP OUT
ACC GND

J2
2 6 10 13 16 8 15 7 14 6 13 5 12 4 11 3 10 2 9

GND

GND

GND

VCC

TAB

RL+

RL1

RR-

FL+

FL1

FR-

RL-

FL-

FRONT R 3 ANT CONT 7 11

P.CON

T.MUTE

RR+

ACC

P.ANT

GND

RR-

FR-

FR+

RL+

FL+

B.U.

RL-

FL-

11

0V 1

7.3V 9

19

21

7.3V 10

12

0V 13

15

16

17

0V 18

14.4V 20

22

0V 2 + C203 100u10 7.3V 3

7.3V 5

14.4V 6

7.3V 7

0V 8

23

C47 R35 4.7K 14

R34 4.7K

4.7K

47

W1

C48 0.22u50

0.22u50

0.22u50 C45

0.22u50

RL+

R22

W2

RR-

RR+

FR-

FR+

RL+

FL+

RL-

FL-

47K

GND

RR

FR

R410 4.7K

R409 4.7K

R408 2.2K

R407 2.2K

R406 2.2K

GND

BU

2

DC CORD (E30-4784-05) KRC-488/388(M)
8 7 6 5 4 3 2 1 A

W34

RR+

FR+

RL

FL

RR-

R411 47

R405 47

R23 4.7

R21 10

C204 1u50 +

R257

PCON

22K

C13 100u50 + C11 1u50 +

W35

6

22

FR-

C12 1u50 +

10K

7

C170 2200u16 +

1K

C46

10

D16

R250

+

FL-

ACC

RL-

FL+

Q201

C205 1u50

4

8

12

L1

P.CONT

R404

R33 4.7K

R36

3.2V

0V 24
R256 750 R255 22K 46

5

21

D5

D19

D4 Q94
C86 3.3u25 +

D6
C132 0.01 R187

16 8 REAR L FRONT L 15 7 14 6 REAR R FRONT R 13 5 12 4

8 7

6 5

4 3

2 1 B

D403

D85
R27 4.7K

D

22K

ACC

D18

TEL MUTE
R185 10K

R186 47K

R207 100

D84

HARD MUTE SW
5.0V
22K

RL+ FLFL+ FRFR+ RRRR+

RL-

13 0V

11 0V

10 0V

D17

Q117 R25 Q116
560 1W R26 47K
10K 47K

4.7K

14

R24

12

R28

20K

R180 100K

22K

Q96
22K

MUTE R415

C131 0.01

R182

RST

10K

RST

DC CORD (E30-4783-05) KRC-408/308S/38MR(K)
10 15

R178

10K

D86
R413 100K 100K R412 100K

2

3

5

6

10K

D20
24

0V 7

4

C88 0.1u50 +

1

Q97

C122 0.1

Q118

0V

GND

3

BU14V

9

1

GND

C P-CON

P-ANT

R177 39K

R176 100K

DC CORD (E30-4790-05) KRC-28YG/YA(E)

VDD

0.068

R30

11 3 10 2

P.CONT ACC

1k 1/2W

R179

W3

P. CONT

1K 1/2W

9

R175 3.3K 1/2W

MUTE DRIVE BU DET

5V

0V

0V

5V

5V

8

D3

R184 100K

D11

D408

C87

ACC DET

5V

IC7

0V

IC7

Q119

22K

D411

Q95

R29 22K

Q121
47K 47K

11

12

14

13

R414

(X14-616X-XX)
MODEL NAME UNIT No. KRC-408 KRC-308S KRC-38MR KRC-308S KRC-488 KRC-388 KRC-28YG 0-10 0-11 0-12 0-13 0-21 0-22 2-71 A B C D E YES YES YES YES YES YES NO D11, C57,59, D84 127,128 C208 CN4 CN5 17 YES YES NO YES YES NO NO NO NO YES NO NO YES NO YES NO NO NO YES NO NO YES NO NO NO YES NO NO NO NO NO NO YES YES YES YES YES YES YES NO NO NO IC1 LC72366-9584 LC72366-9584 LC72366-9585 LC72366-9584 LC72366-9584 LC72366-9584 LC72366-9584 IC5 HA12216F HA12216F HA12221F HA12216F HA12216F HA12221F HA12221F W3 W34 NO NO NO NO NO NO YES NO NO NO NO YES YES YES C133

100K

23

47K

19

5V

0V

MUTE

R337 1K

1/2W

C82 10u10

D81

C81 0.01

YES NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO YES NO YES NO NO NO YES NO NO YES NO YES R11-14 119 NO NO YES NO NO YES YES

CN2
M+B 7

0.01

Q336

D80
C80 100u16
R336 10K

Q80
R70 22K
+

C83 100u6.3

D333

Q81
R71 100 +

+

MOTOR
7 6

R145 100K

T-END

5

STBY 4

BU5V
10K

47K

D21

R341 470

C104 R339

R340 100K

R338 100K

69

68

72

71

80

79

78

77

76

75

74

KRC-408 KRC-308S KRC-38MR KRC-308S KRC-488 KRC-388 KRC-28YG

0-10 0-11 0-12 0-13 0-21 0-22 2-71

YES YES NO YES YES NO NO

NO NO NO NO YES YES YES

NO YES NO YES NO NO YES

NO NO YES NO YES NO NO

NO NO YES NO NO NO NO

YES YES YES YES YES YES NO

R77

YES YES YES NO YES YES

TEST 1

C105 0.01

VDD

EO1

SUB PD

AM IN

FM IN

LCTR

EO2

Q88
1K

22K

Q86
47K 47K

C101 22P 20 3 4 5 6

X OUT

0.01

ILLUMI

MUSIC

HCTR

HOLD

VSS

SNS

S MTR

EO3

1

10K

X1 4.5MHz

NO

YES YES NO YES YES NO NO

X86-3160-11 X86-3160-11 X86-3160-11 X86-3160-11 X86-3160-11 X86-3160-11 X86-3162-70

YES YES NO YES YES NO NO

Q87
22K

73

70

67

66

65

GND 2

470

4

MODEL NAME UNIT No. R9,10 58

R24

R120

R121

R122

R123,124,412414,416-418

J5

VR1,2

A1

CP2

3

33

C102 22P

0V

0V

66

RST

R146 47K

1K

47K

R142

GND 6

HOLD SW

Q337

R143 22K

Q335

64 BACK UP ACC PHONE T MODE 63 3.3V

0V

4.8V

R129 4.7K

1 0V 2 3

XIN

TEST2 LDATAL LDATAS LCD CLK TSTBY 5.0V T END SDA 2 SCL 2 0V 5V 0V 5V 0V 5V 0V

5.0V 5V

5.0V 0V 2.6V 5V

R104 100 R105 100 R107 4.7K R106 4.7K R102 2.2K R101 2.2K R418 47

4 5 6 7 8 9 10 11

62 1.4V 61 0V 60 59 58 57 56 55 54 R127 4.7K CP2 22K

CP4 4.7K

D83

Q89

0.7V

ME1

0V 5V

4.8V REMO 0V SD

R103

7

MUTE

22K FWD/REV

8 9 10

55

MODE

PACK

REQ H 5.0V DATA C DATA H 0V 5V

IC1
u-COM
0V 5V 5V 0V 5V 5V 5V 0V 5V 0V 0V 5V 0V DOLBY 5V MTL 53 52

RST

11 12 R416 47 R417 47 0V

53 52 CP3 1K

12 13 14 15 16 17 18 19

Ref.105

PACK

5

Ref.103
RST

13 14 15

CH CLK 5.0V REQ C CH CON LCD CE AM+B FM+B MUTE ILL AMP STBY SVR 5V 0V 0V

4.8V

SCL 3 SDA 3

51 50 CP1 49 4.7K 48 47 0V 46 46

51 50 R135 22K 49 48

Ref.102
TAKEUP REEL PLAY HEAD HEADR HEADCOM HEADL GND F/R PACK IN 1 2 3 4 5 6 7 8 9 Lch Rch HD1

16

47K

M2 M1 SUB MAIN M M
10K

17 18

0V FWD/REV PACK IN CRSC AMP MUTE

R126 47K

R419 47K

7 6

M+B GND

Q104 PANEL SW D8

19 R114 240

Q105

20 21 22 23 24

4.3V 20 21 0V 22 23 24

0V 0V 0V

4.8V

5V

PANEL 0V BEEP

45 44 43 44 5V 0V 0V 4.8V

N.CAN

SEL 2

SEL 1

SEL 0

SUB+

SUB-

VDD

P.ON

0V 32

16

37

SUPPLY REEL

31

29

39

35

36

25

26

27

28

30

33

R156 100

R157 1K

R119 10K

R120 10K

MODE +B

2 1

GND NC

MODE 10

Ref.100

Ref.107
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

C110 220u6.3 +

R125 47K

SUB(-)

3

NC

25

26

56 45

R121 10K

33

6

SUB(+)

5.0V

4

STBY

0/5.0V C111 0.01

34

Ref.95

0V

5V 39 38

37

38

40

STBY
5 4

R123 2.2K

5

T-END

DSI

ANT CONT

(KICK)

B

MOTOR

P.CON

0V

EQ MUTE

Ref.94 T-END

ROLL OFF

DSI

INITIALIZE

5V

MS CONT2 (TEST)

42 41

42

3

61

FWD/REV

37

LDATAS

LDATAL

REMO

ILL GND

D GND

SW 5V

LAMP +B

PANEL SW

L CLK

L CE

ESD GND

VDD

RST

J3

45

R122 56 R124 2.2M 1 2 1K

CN4

7

44

R253 150K

R251 4.7K

TH1

D7

C202 1u50 +

25
R258 430

4

POWER AMP

CD

1

VCC

SVR

RR+

RR1

FR+

FR1

14 6

GND

GND

IC4

MUTE

0V

STBY

7.2V

7.3V

K

L

M

N

O

P

Q

R

S

T

PRE OUT 1L J5 2R J6 1L

REAR 2R 3L

FRONT 4R

A

ANT
R43 180 R44 180

PRE OUT FRONT MUTE Q42
4.7K

J1

2SB1184

R37 22K

R38 22K

FM+B
C43 0.01

Q92
R193 1K R195 22K

L7 52mH

DTA124EUA DTC114EUA DTC124EUA DTC144EUA

1 2

D1
R41 360 C16 R42 10u16 360 +

Q41
4.7K

Q90
18
22K 22K

RF GND FM ANT

R47 180

R48 180

L6 4.7uH

C15 10u16

3 4 5

R39 22K

R40 22K

Q44
4.7K

+

MUTE

AM ANT OSC GND FM+B

R194

Q93
R196 22K

6 7 C211 0.01 8 9 10 11 12

AM+B OSC GND OSC GND OSC GND OSC GND VT PLL+B IFC OUT SDA SCL DIG GND VDD 5V IF2 GND IF2+B

Q91
17
C17 R45 10u16 360 + C18 R46 10u16 360 +
22K 22K

1K

Q43
4.7K

AM+B

13 50 51 R90 150 14 15 16 17

IC2
0V RR RL FL FR 9 8

E. VOL. /MPX
C69 4V MP OUT 14 4.8V 0.1 13 MP IN R67 12 LEVEL 4.7K
C70 0.1

2SB1277 2SB1443

15 16 17 18 19 0V 20 8.0V 3.4V 21 23

MUXOUT L MUXOUT R SMUTE 5.0V SCL SDA 0V GND VDD OUTRR OUTLR OUTRF OUTLF CREF ACOUTR ACOUTL AM PHONE CDLGND CD L CDRGND CD R CASS L CASS R AC IN R AC IN L 5V 10 9 8 7 6 5 4 3 MPX 11

18 19
C208 100u10

4.0V

C195 0.22
C194 150P

R191 4.7K

L2 4.7uH

+

C68 4.0V 0.015
C193 0.033

R192 2.7K 55 66 L3 4.7uH
C212 100u10

2SC4081
20 21 22 AUDIO OUT SD S-METER

4.0V 4.0V 4.0V 4.0V 4.0V 7 6 5

DTA114EK DTC114YK DTC114YUA DTC143TUA UN5114 UN5211 UN5213 UN5214 UN5216 2SA1036K 2SA1576A 2SD1819A

3.4V 22

D90

23 + 24

3.4V 24 3.4V L5 10uH C66 0.01 C65 100u10 + C67 + 1u50 25

IF1+B IF1 GND

4.0V 26 27 28

1

C20 1 4.0V

2

A1 F/L
C19

TUNER/PLL
1

SIGNAL LINE B LINE CN5
1 2 R12 3 VR1,2 Lch GND Rch

MA142WA UN5212

DOLBY ADJ.

DAP202U DA204K DTA114YUA

R65

C8 0.1u50

4.7

R14 5.1K

R58 18K

C59 0.1

+ R8
2 3.9V 1 R10

VR2 10K R6

5.6K

DOLBY ADJ.

5.0V(0V)
8 1.8V 6 4.1V 5 4.1V 4 0.3V C85 100u10

12K C6 330K
3 3.1V

18K

+
38 10 9

0.012 3.5V R4 C4 150 22u6.3 +
R2 15K

IC1 IC2 IC4 IC5 IC6 IC7

: : : : : :

TDA7461ND TDA7384A LB1930M HD74HC27FP

LB1930M

DIN(R)

EQOUT(R)

PBOUT(R)

RAI(R)

R64 2.2

Q84 SUB MOTOR DRIVER
D332

52 C128 10u6.3 + 42 N.C. 10 9
C336 0.22

0V 12 0V 13 0V 14 5.0V 15 8.2V 16

MTL F/R MSGV MSOUT VCC 4.8V

RIN(R) VREF FIN(R) GND

39 38 4.1V 37 3.9V 36 0V 35 0V 34 3.9V 33 3.1V

C2 1500P

R63 2.2 1/2W

53

DOLBY

M-OUT(R)

DET(R)

BIAS

T/R

0V(5.0V) 11 C127 22u6.3 +

7

8V AVR

NFI(R)

40

3.3V

Q82 SW14V
22K

1/2W

CN1
1 2 HEADR HEADCOM

IC6
7.4V 1 2 0V VCC N.C. 0V OUT1 8 5V N.C.

Q85
22K

7.4V
C126 0.22u50 C124 100u10 C125

IC5
EQ/DOLBY

GND FIN(L) RIP

Q83
R60 10K
47K 47K

R50

R61 1K
C84 100u16

R62 1K

9

180K

0.01

+

+

3
C1 1500P R1 15K

HEADL GND F/R PACK IN SUB(+) SUB(-)

17

D82

+

C337 0.22

26 25

3 4

C123 1u50 +

MSDET MSI
EQOUT(L) PBOUT(L) M-OUT(L) MSGV(R)

R56 100K C60 0.01 R57 470 9 C61 R53 7 R54 750 0.01 470 R59 100K

4 5 6 7 8

FIN RIN 0V SGND OUT2 PGND 7 6 0V

2.9V 18
C54 0.01

DIN(L)

RAI(L)

MAOUT MSGV(S)

DET(L)

7

4.1V 19 3.0V 20

RIN(L) NFI(L) 3.5V

32 31 3.3V

R3 C3 150 22u6.3 +

5

C55 R51 0.47u50 1.6K +

R52 24K 4.1V 21

22 C57 0.1 1.9V 23

3.9V 29

4.1V 25

4.1V 26

27

3.1V 28

R9 30

24

Q41-44 : DTC143TUA or UN5216 Q80,336 : 2SB1443 Q81,85,89,105,118 : 2SC4081 or 2SD1819A Q82,87,96,119 : DTA124EUA or UN5112 Q83,86,103,121,337 : DTC144EUA or UN5213 Q84 : 2SA1648-Z Q88 : 2SB1184 Q90,91 : DTC124EUA or UN5212 Q92-94,117 : 2SB1277(O,R) Q95 : 2SA1576A Q97,116 : DTC114YUA or UN5214 Q101 : 2SA1036K Q104 : DTA114YUA or UN5114 Q201 : DTC114YK or UN2214 Q335 : DTC114EUA or UN5211 D1,3,4 : DA204K D5 : MA3062-M D6,7 : DAP202U D8 : B30-1511-05 D11,84 : M1F60 D16 : S2V20 A D17,80,85,332,335 : AM01Z D18 : MA4047-M D19 : MA4068(N)-M D20 : MA4051-L D21,86 : 1SS133 D81 : MA4056(N)-M D82 : MA4091(N)-L D83 : MA4110-L D90 : MA4051(N)-M D403 : MA3062WA D408,411 : MA4062-L

18K

SW5V Q103
47K 47K

C5 0.012 R5

R55 22K

9

MODE +B

10 MODE
61 49 48

R7 12K
C7 0.1u50

R153
R154 47K

330K

2.2K

C56 0.01

VR1 10K R11 5.6K

39

Q101

R13 5.1K

+

X13J1 2/2

A

CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list). ! Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (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 individual instruments or/and units.

KRC-28YG/YA

U

V

W

X

Y

Z

AA

AB

AC

AD

1

X14 J3 1/2

(X13-967X-XX)

D10

D12

D14

A
D1 D4 D9

PL1

D17

16

15

13

12

11

D21

14

10

9

0.1

0.1

C8

C6

J1
5V 0V 1 ESD-GND 2 3 64 63 62 61 60 59 58 57 56
R16 R17 47

8

7

D11

D13

D15

PL2

D2

D6

D7

6

1

16

15

14

13

12

11

10

D25
9 8 7 6 5 4 3 2 1 S9 KEY S8 S7 S6 S5 S3 S4 S2

D24

PANEL SW REMO

D22

0.1

S15

S16

S13

S12

S11

C7

D16

D3

D5

D8

S14

S10

B

2

A
R22 R23 R1 330 R2 330 R3 330 R5 470 R4 470 R6 470 R7 13

17 18 19 20 21 22

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32
S33 S34 S35 S36 S37

RESET
64 63 62 61 C5 820P
R18 1K

DATAS CLK CE DATAL OSC 0V VSS

4 R14 100 R13 100 R12 100 R11 100 9 7 8 5 6

RST PAN 5V L-DATAL L-CE L-CLK L-DATAS

61 62 63 64

R19 68K C1 0.047 C4 0.047

KI1

23 24 25

VOL3

TI

ATT

1

LCD DRIVER

1.7V VDD1 3.3V VDD2 5.0V VDD

IC1

10 LAMP+B 11 ILL+B 12 SW5V

26 KI2 27 28 29 30 KI3 31 32

AUDIO

VOL+

4

3

2

1.7V 0V 5V 0V 5V 0V
COM1 COM2 S38 S39 S40

1K

0V TEST KI5 KI4 KI3 5V 0V
COM3 KS1 KS2 KS3 KS4 KS5

55 54 53 52 51 50 49
10K

C2 0.01

13

L-RES 14 ILL-GND

C
15
C3 1

KI3 KI2

D26

KI4

D-GND

KI2 KI1 KS6

4.8V 5.0V
1

KI1

41

10K

KI4

4

Q1

6

FM

CLK
33 35 36 37 38 39 40 41 42 34 43

GND2 VCC

GND1 OUT

33

35

36

37

38

39

40

42

43

45

46

47

34

44

48

2

SRC

AM

5

0V

IC2
REMOTE SENSOR

3

0V
KS1 KS2 KS3 KS4 KS5

KS5

KS3

KS4

KS2

KS1

1

4

21

31

29

39

11

41

20

22

23

25

26

27

28

30

32

33

35

36

37

38

40

42 COM2 37

24

13

15

16

17

18

19

34

12

14

10

S22 10

S23 11

S24 12

S25 13

S26 14

S27 15

S28 16

S29 17

S30 18

S31 19

S32 20

S33 21

S34 22

S35 23

S36 24

S37 25

S38 26

S39 27

S40 28

S12 29

S11 30

S10 31

S9 32

S8 33

S7 34

S6 35

COM1 36

(X13-967X-XX)
MODEL NAME UNIT No. 0-10 0-11 0-13 0-12 2-71 2-72 A YES NO NO NO NO NO B NO B30-1485-05 B30-1485-05 B30-1513-05 B30-1485-05 B30-1485-05 C YES YES YES YES NO NO D1-16 B30-1533-05 B30-1533-05 B30-1533-05 B30-1533-05 B30-1533-05 B30-1567-05 D17 B30-1564-05 B30-1533-05 B30-1533-05 B30-1533-05 B30-1564-05 B30-1564-05 D26 YES YES YES YES NO NO C8 YES NO NO NO YES YES R7 360 470 470 470 360 360 R22 270 13 13 13 13 13 R23 NO YES YES YES YES YES LCD B38-1026-05 B38-1026-05 B38-1026-05 B38-1032-05 B38-1026-05 B38-1026-05

S16

5

IC1 IC2 Q1

: LC75853NE : RS-171 : DTA114EK or UN2111 : : : B30-1572-05 : MA3062WA : MA3062-M

+B LINE

6

KRC-408 KRC-488 KRC-308S KRC-388 KRC-308S KRC-38MR KRC-28YG KRC-28YA

D1-16 D17 D21,22 D24,25 D26

7

CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list). ! Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (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 individual instruments or/and units.

KRC-28YG/YA

COM3 38

S13 1

S14 2

S15 3

4

S17 5

S18 6

S19 7

S20 8

S21 9

LCD

43

9

8

7

6

KRC-28YG/YA
EXPLODED VIEW (MECHANISM)
A
Dx2 G

B

HD1
Ax3

73

4

a

33 75

25
N

76
F F

a

55
1

32 34 26 39

M

M

44
M

71

27 24
G

57
Bx2

M

14 43

M1 2 79
K

54 63 79 70 M2
G G

64 52
R

52
R

T

T

6 45 16
L

74 16 45
M

74

5 67

59 69
S

7 3 35 46 42 48 47 103
G

105
899

68

13
Q

13 17

L Q

8 40 36

2

M Ex2 M

102 9 41
A B C D E F G H J K L M N P Q R S T M2x2.5 M1.7x7
H G

100

1 77 22

38
L M L

37

19 10 94 95 80
P P

107

23 15 62 53
L
J

: N09-4193-08 : N09-4194-08 : N09-4195-08 : N09-4196-08 M2x2.2 : N09-4197-08 : N09-4198-08 M2x3 : N09-4199-08 M2x5 (BLK) : N09-4200-08 M2.6x3(BLK) : N09-4201-08 : N19-2086-08 Ø1.2 x Ø3 : N19-2087-08 Ø1.6 x Ø3.2 : N19-2088-08 Ø1.6 x Ø3.2 : N19-2089-08 Ø2.1 x Ø3.2 : N19-2090-08 Ø2.1 x Ø4 : N19-2091-08 Ø1.5 x Ø3.2 : N19-2092-08 Ø1.5E : N29-0510-08 Ø1.6E : N29-0511-08

3
887

C

83 18

31

L
J
J

J

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

15

KRC-28YG/YA
EXPLODED VIEW (UNIT)
C D
D

DC1 210x2 259

205

D

ME1
E 803 D D E

1

248
D

201
E x2

A M2.6x8 (BLK) B Ø 2x6 C Ø 2x8 (BLK) D Ø 3x5 E M3x12 F Ø 3x10

: : : : : :

N30-2608-45 N80-2006-46 N80-2008-45 N83-3005-46 N30-3012-46 N80-3010-46
C C

D 802

D F D

F1
771

204
C C (X14-6160-10)

X13-9670-10 D C

(X14-)

2

A1
726

304 LCD1 302 303 304 301
801 770

D

225
702 B

PA1

245 255 252 256 253 250 254
706

203
B

235

208
3

CL1 246

236 251

A

237 220 221

207

238

223

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

KRC-28YG/YA
PARTS LIST
New Parts Parts 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.
A d d N e w

KRC-28YG/YA SWITCH UNIT (X13-9672-7X) SYNTHESIZER UNIT (X14-6162-71)
Ref. No. D17 LCD1 PL1 ,2 C1 C2 C4 C5 C8 304 J1 R1 -3 R4 -6 R7 R11 -14 R22 ,23 D24 ,25 IC1 Q1 Q1 2C
A d d N e w

Parts No.

Description

Dest inati on

Parts No. B30-1564-05 B38-1026-05 B30-1543-05 CK73FB1E473K CK73FB1H103K CK73FB1E473K CK73FB1H821K CK73FB1C104K E29-1575-04 E59-0828-05 RK73EB2B331J RK73EB2B471J RK73EB2B361J RK73FB2A101J RK73EB2B130J MA3062WA LC75853NE DTA114EK UN2111

Description LED(1608,BLUE) LIQUID CRYSTAL LAMP (GRN,5.5V,0.12) CHIP C CHIP C CHIP C CHIP C CHIP C 0.047UF 0.010UF 0.047UF 820PF 0.10UF K K K K K

Dest inati on

KRC-28YG/YA
201 203 204 205 CL1 PA1 207 208 210 220 221 223 ME1 225 DC1
!

2C

1C 3D 2C 1D 3D 3C

A02-1486-13 A22-2385-01 A46-1656-01 A52-0719-02 A53-1638-13 A64-1909-02

PLASTIC CABINET ASSY SUB PANEL REAR COVER TOP PLATE CASSETTE LID PANEL ASSY ESCUTCHEON FRONT GLASS ID CARD INSTRUCTION MANUAL E,R,O INSTRUCTION MANUAL Z,H,C LEVER LEVER LEVER SHAFT CASSETTE MECHANISM ASSY CONDUCTIVE RUBBER DC CORD FUSE(MINI BLADE TYPE) TORSION COIL SPRING COMPRESSION SPRING EXTENSION SPRING FLAT SPRING POLYSTYRENE FOAMED FIXTURE PROTECTION BAG (280X450X0.03) PROTECTION BAG (180X300X0.03) ITEM CARTON CASE E4 ITEM CARTON CASE E5 HOLDER MOUNTING HARDWARE MOUNTING HARDWARE ASSY KNOB KNOB KNOB KNOB KNOB KNOB KNOB SRC RELEASE AUD FM,AM AUTO VOL 1-6

3D B07-2181-02 3C B10-3140-01 B46-0606-04 B64-1582-00 B64-1583-00 1C 3D 3D 3D 1D 3C 1C 2D 3D 3C 3D 3D D10-3031-04 D10-4051-33 D10-4052-03 D21-2250-04 D40-1081-25 E29-1577-02 E30-4790-05 F52-0006-05 G01-2525-04 G01-2738-04 G01-2792-04 G02-1244-03 H10-4696-02 H25-0329-04 H25-0337-04 H54-1620-03 H54-1621-03 3C 3D 1C 3C 3C 3C 3C 3C 3C 3C 3D 3C 2C 1D 1C J19-4882-12 J21-7726-04 J21-9491-03 K24-1927-04 K24-1948-14 K25-0963-03 K25-0969-03 K25-0970-03 K25-0971-03 K25-0972-03 N30-2608-45 N80-2006-46 N80-2008-45 N83-3005-46 T90-0523-05

CONDUCTIVE RUBBER RECTANGULAR PLUG CHIP R CHIP R CHIP R CHIP R CHIP R 330 470 360 100 J J J J 1/8W 1/8W 1/8W 1/10W

13 J 1/8W

ZENER DIODE MOS-IC DIGITAL TRANSISTOR DIGITAL TRANSISTOR

F1 235 236 237 238 245 246 248 250 251 252 253 254 255 256 A B C D 259

SYNTHESIZER UNIT (X14-6162-71)
D8 C1 ,2 C3 ,4 C5 ,6 C7 ,8 C17 ,18 C19 ,20 C43 C45 -48 C54 C55 C56 C60 ,61 C65 C66 C67 C68 C69 ,70 C80 C81 C82 C83 C84 C85 C86 C87 C88 C101,102 C104 C105 C110
!

B30-1511-05 CK73GB1H152K CE04CW0J220M CK73GB1E123K C90-2602-05 C90-2597-05 CK73EB1C105K CK73FB1H103K C90-5296-05 CK73GB1H103K C90-2606-05 CK73GB1H103K CK73FB1H103K CE04CW1A101M CK73FB1H103K C90-2608-05 CK73GB1E153K CK73FB1C104K CE04DW1C101M CK73GB1H103K C90-2594-05 CE04CW0J101M CE04CW1C101M CE04CW1A101M C90-2598-05 CK73FB1E683K C90-2602-05 CC73GCH1H220J CK73FB1H103K CK73GB1H103K CE04CW0J221M

LED(1,±) CHIP C 1500PF ELECTRO 22UF CHIP C 0.012UF ELECTRO 0.10UF ELECTRO 10UF CHIP C 1.0UF CHIP C 0.010UF ELECTRO 0.22UF CHIP C 0.010UF ELECTRO 0.47UF CHIP C 0.010UF CHIP C 0.010UF ELECTRO 100UF CHIP C 0.010UF ELECTRO 1.0UF CHIP C 0.015UF CHIP C 0.10UF ELECTRO 100UF CHIP C 0.010UF ELECTRO 10UF ELECTRO 100UF ELECTRO 100UF ELECTRO 100UF ELECTRO 3.3UF CHIP C 0.068UF ELECTRO 0.10UF CHIP C 22PF CHIP C 0.010UF CHIP C 0.010UF ELECTRO 220UF K 6.3WV K 50WV 16WV K K 50WV K 50WV K K 10WV K 50WV K K 16WV K 10WV 6.3WV 16WV 10WV 25WV K 50WV J K K 6.3WV

PAN HEAD MACHINE SCREW PAN HEAD TAPTITE SCREW PAN HEAD TAPTITE SCREW PAN HEAD TAPTITE SCREW ANTENNA ADAPTOR

SWITCH UNIT (X13-9672-7X)
301 302 303 D1 -16 D1 -16 2C 2C 2C B11-0967-04 B11-0968-04 B19-1166-23 B30-1533-05 B30-1567-05
E5 : KRC-28YA

OPTICAL DIFFUSER REFLECTION SHEET LIGHTING BOARD LED(1608,PG) LED(1608,RED)

E4 E5

E4 : KRC-28YG

indicates safety critical components. 17

KRC-28YG/YA
PARTS LIST
New Parts Parts 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. C111 C122 C123 C124 C125 C126 C131 C132,133 C170 C193 C194 C195 C202 C203 C204 C205 C208 C211 C212 C336,337 CN1 J1 J2 J3 J5 W12 -15 W17 ,18 W20 -34 W36 -38 L1 L2 ,3 L5 L6 L7 X1 X1 X1 E F CP1 CP3 CP4 R1 ,2 R3 ,4 R5 ,6 R7 ,8 R11 ,12 R13 ,14 R24 R27 R28 R30 R33 -36 R39 ,40
E4 : KRC-28YG A d d N e w

SYNTHESIZER UNIT (X14-6162-71)
Ref. No. R45 ,46 R47 ,48 R50 R51 R52 R53 R54 R55 R56 R57 R59 R60 R61 ,62 R63 ,64 R67 R70 R71 R90 R101,102 R103 R104,105 R106 R107 R114 R119,120 R125,126 R127 R129 R135 R142 R143 R145 R146 R153 R154 R156 R157 R175 R176 R177 R178 R179 R180 R182 R184 R185 R186 R187 R191 R192 R193,194 R195,196 R207 R250 R251
A d d N e w

Parts No. CK73GB1H103K CK73FB1C104K C90-2608-05 CE04CW1A101M CK73GB1H103K C90-2604-05 CK73GB1H103K CK73FB1H103K C90-5235-05 CK73FB1E333K CC73FCH1H151J CK73FB1C224K C90-2608-05 CE04CW1A101M C90-2608-05 C90-2935-05 CE04CW1A101M CK73GB1H103K CE04CW1A101M CK73FB1C224K E40-9541-05 E04-0312-05 E58-0863-15 E58-0879-05 E63-0013-05 E31-0001-00 E31-0001-00 E31-0001-00 E31-0001-00 L33-1063-15 L40-4795-91 L40-1001-17 L40-4791-17 L33-1123-05 L77-1163-05 L77-1165-05 L77-2025-05 CHIP C CHIP C ELECTRO ELECTRO CHIP C ELECTRO CHIP C CHIP C ELECTRO CHIP C CHIP C CHIP C ELECTRO ELECTRO ELECTRO ELECTRO ELECTRO CHIP C ELECTRO CHIP C

Description 0.010UF K 0.10UF K 1.0UF 50WV 100UF 10WV 0.010UF K 0.22UF 50WV 0.010UF K 0.010UF K 2200UF 16WV 0.033UF K 150PF 0.22UF 1.0UF 100UF 1.0UF J K 50WV 10WV 50WV

Dest inati on

Parts No. RK73GB1J361J RK73EB2B181J RK73GB1J184J RK73GB1J162J RK73GB1J243J RK73FB2A471J RK73FB2A751J RK73GB1J223J RK73GB1J104J RK73FB2A471J RK73FB2A104J RK73FB2A103J RK73GB1J102J RD14DB2H2R2J RK73GB1J472J RK73GB1J223J RK73GB1J101J RK73EB2B151J RK73FB2A222J RK73FB2A223J RK73GB1J101J RK73FB2A472J RK73GB1J472J RK73FB2A241J RK73GB1J103J RK73FB2A473J RK73GB1J472J RK73FB2A472J RK73GB1J223J RK73FB2A102J RK73GB1J223J RK73GB1J104J RK73FB2A473J RK73GB1J222J RK73GB1J473J RK73EB2B101J RK73EB2B102J RD14DB2H332J RK73EB2B104J RK73GB1J393J RK73GB1J103J RK73GB1J203J RK73GB1J104J RK73GB1J103J RK73EB2B104J RK73EB2B103J RK73FB2A473J RK73GB1J223J RK73FB2A472J RK73GB1J272J RK73EB2B102J RK73GB1J223J RK73FB2A101J RK73FB2A102J RK73GB1J472J
!

Description CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R SMALL-RD CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R SMALL-RD CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R 360 180 180K 1.6K 24K 470 750 22K 100K 470 100K 10K 1.0K 2.2 4.7K 22K 100 150 2.2K 22K 100 4.7K 4.7K 240 10K 47K 4.7K 4.7K 22K 1.0K 22K 100K 47K 2.2K 47K 100 1.0K 3.3K 100K 39K 10K 20K 100K 10K 100K 10K 47K 22K 4.7K 2.7K 1.0K 22K 100 1.0K 4.7K J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J 1/16W 1/8W 1/16W 1/16W 1/16W 1/10W 1/10W 1/16W 1/16W 1/10W 1/10W 1/10W 1/16W 1/2W 1/16W 1/16W 1/16W 1/8W 1/10W 1/10W 1/16W 1/10W 1/16W 1/10W 1/16W 1/10W 1/16W 1/10W 1/16W 1/10W 1/16W 1/16W 1/10W 1/16W 1/16W 1/8W 1/8W 1/2W 1/8W 1/16W 1/16W 1/16W 1/16W 1/16W 1/8W 1/8W 1/10W 1/16W 1/10W 1/16W 1/8W 1/16W 1/10W 1/10W 1/16W

Dest inati on

1.0UF 50WV 100UF 10WV 0.010UF K 100UF 10WV 0.22UF K

PIN ASSY RF COAXIAL CABLE RECEPTACLE RECTANGULAR RECEPTACLE RECTANGULAR RECEPTACLE PIN JACK JUMPER WIRE JUMPER WIRE JUMPER WIRE JUMPER WIRE CHOKE COIL SMALL FIXED INDUCTOR(4.7UH,J) SMALL FIXED INDUCTOR(10UH,K) SMALL FIXED INDUCTOR(4.7UH,K) LINE FILTER COIL CRYSTAL RESONATOR(4.5M) CRYSTAL RESONATOR(4.5MHZ) CRYSTAL RESONATOR PAN HEAD MACHINE SCREW PAN HEAD TAPTITE SCREW MULTI-COMP MULTI-COMP MULTI-COMP CHIP R 15K CHIP R 150 CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R 330K 12K 5.6K 5.1K 4.7K 4.7K 1.0K 1.0K 4.7K 22K 4.7K X2 1K X2 4.7K X2 J 1/16W J 1/16W J J J J J J J J J J 1/16W 1/16W 1/10W 1/10W 1/8W 1/8W 1/2W 1/2W 1/16W 1/16W

1D 1D

N30-3012-46 N80-3010-46 R90-0719-05 R90-0725-05 R90-0719-05 RK73GB1J153J RK73GB1J151J RK73GB1J334J RK73GB1J123J RK73FB2A562J RK73FB2A512J RK73EB2B472J RK73EB2B472J R92-0365-05 R92-0365-05 RK73GB1J472J RK73GB1J223J
E5 : KRC-28YA

18

indicates safety critical components.

KRC-28YG/YA
PARTS LIST
New Parts Parts 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. R253 R255 R256 R257 R258 R336 R337 R338 R339 R340 R341 R415 R419 W1 W3 D1 D6 ,7 D6 ,7 D11 D16 D17 D17 D18 D19 D20 D21 D80 D80 D81 D82 D83 D85 D85 D86 D90 D332,333 D332,333 IC1 IC2 IC4 IC5 IC6 IC7 Q43 ,44 Q43 ,44 Q80 Q81 Q81 Q82 Q82 Q83 Q83 Q84 Q85 Q85
E4 : KRC-28YG A d d N e w

SYNTHESIZER UNIT (X14-6162-71) CASSETTE MECHANISM ASSY (D40-1081-25)
Ref. No. Q86 Q86 Q87 Q87 Q88 Q89 Q89 Q90 ,91 Q90 ,91 Q92 -94 Q95 Q96 Q96 Q97 Q97 Q101 Q103 Q103 Q104 Q104 Q105 Q105 Q118 Q118 Q119 Q119 Q121 Q121 Q201 Q201 Q335 Q335 Q336 Q337 Q337 TH1 A1 2D
A d d N e w

Parts No. RK73GB1J154J RK73GB1J223J RK73GB1J751J RK73GB1J223J RK73GB1J431J RK73GB1J103J RD14DB2H102J RK73FB2A104J RK73FB2A471J RK73FB2A104J RK73FB2A471J RK73GB1J104J RK73GB1J473J R92-2053-05 R92-2052-05 DA204K DAP202U MA142WA M1F60 S2V20*A AM01Z ERA15-01 MA4047-M MA4068(N)-M MA4051-L 1SS133 AM01Z ERA15-01 MA4056(N)-M MA4091(N)-L MA4110-L AM01Z ERA15-01 1SS133 MA4051(N)-M AM01Z ERA15-01 LC72366-9584 TDA7461ND TDA7384A HA12221F LB1930M HD74HC27FP DTC143TUA UN5216 2SB1443 2SC4081 2SD1819A DTA124EUA UN5112 DTC144EUA UN5213 2SA1648-Z 2SC4081 2SD1819A CHIP R CHIP R CHIP R CHIP R CHIP R

Description 150K 22K 750 22K 430 J J J J J 1/16W 1/16W 1/16W 1/16W 1/16W

Dest inati on

Parts No. DTC144EUA UN5213 DTA124EUA UN5112 2SB1184 2SC4081 2SD1819A DTC124EUA UN5212 2SB1277(Q,R) 2SA1576A DTA124EUA UN5112 DTC114YUA UN5214 2SA1036K DTC144EUA UN5213 DTA114YUA UN5114 2SC4081 2SD1819A 2SC4081 2SD1819A DTA124EUA UN5112 DTC144EUA UN5213 DTC114YK UN2214 DTC114EUA UN5211 2SB1443 DTC144EUA UN5213 PTH9C42BD471Q X86-3162-70

Description DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR TRANSISTOR TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR POSITIVE RESISTOR FRONT-END UNIT

Dest inati on

CHIP R 10K SMALL-RD CHIP R 100K CHIP R 470 CHIP R 100K CHIP R CHIP R CHIP R CHIP R CHIP R DIODE DIODE DIODE DIODE DIODE DIODE DIODE ZENER DIODE ZENER DIODE ZENER DIODE DIODE DIODE DIODE ZENER DIODE ZENER DIODE ZENER DIODE DIODE DIODE DIODE ZENER DIODE DIODE DIODE MI-COM IC ANALOGUE IC ANALOGUE IC 470 100K 47K 0 0

J 1/16W 1.0K J 1/2W J 1/10W J 1/10W J 1/10W J J J J J 1/10W 1/16W 1/16W 1/8W 1/10W

CASSETTE MECHANISM ASSY (D40-1081-25)
1 2 3 4 5 6 7 8 9 10 13 14 15 16 17 2A 1A 2B 1A 2A 2A 2B 2A 2A 3A 2A 1B 3A 2A 2A
!

ANALOGUE IC ANALOGUE IC MOS-IC DIGITAL TRANSISTOR DIGITAL TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR

A10-4329-08 J21-7779-08 A11-0931-08 D10-4106-08 D10-4107-08 D10-4108-08 D10-4109-08 D10-4110-08 D10-4111-08 D10-4112-08 D10-4113-08 D13-1324-08 D01-0609-08 D13-1325-08 D10-4114-08

CHASSIS ASSY MOUNTING HARDWARE SUB CHASSIS ASSY ARM ARM ARM ARM ARM ASSY ARM ASSY ARM ARM GEAR ASSY FLYWHEEL ASSY GEAR ASSY ARM ASSY

E5 : KRC-28YA

indicates safety critical components. 19

KRC-28YG/YA
PARTS LIST
New Parts Parts 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. 18 19 22 23 24 25 26 27 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 52 53 54 55 57 59 62 63 64 67 68 69 70 71 73 74 75 76 77 79 80 83 94 95 100 102 103 105 107
A d d N e w

CASSETTE MECHANISM ASSY (D40-1081-25)
Ref. No. A B C D E F G H J K L M N P Q R S T HD1 M1 M2
A d d N e w

Parts No. D01-0610-08 D13-1326-08 D10-4115-08 D10-4116-08 J21-7780-08 D10-4117-08 D10-4118-08 A52-0716-08 J21-7781-08 J90-0767-08 J19-4737-08 D12-0622-08 D13-1327-08 D13-1328-08 D13-1329-08 D10-4119-08 D13-1330-08 D13-1331-08 D13-1332-08 J11-0619-08 D13-1333-08 D13-1334-08 D13-1335-08 D10-4120-08 J19-4738-08 J11-0620-08 D03-0312-08 D15-0913-08 D13-1336-08 D10-4121-08 D13-1337-08 J31-1036-08 D14-0683-08 D14-0684-08 D15-0914-08 G01-2832-08 G01-2833-08 G01-2834-08 G01-2835-08 G01-2836-08 G09-2020-08 G01-2837-08 G01-2838-08 G01-2839-08 G01-2843-08 G01-2840-08 G01-2841-08 D16-0609-08 S64-0804-08 S64-0805-08 E30-4460-08 T95-0213-08 S62-0858-08 S74-0813-08 E30-4468-08

Description FLYWHEEL ASSY GEAR ASSY SLIDER SLIDER MOUNTING HARDWARE ARM SLIDER HOLDER MOUNTING HARDWARE GUID BRACKET CAM GEAR GEAR GEAR ARM GEAR GEAR GEAR CLAMPER GEAR GEAR GEAR ARM HOLDER CLAMPER REEL DISK PULLEY WORM SLIDER GEAR COLLAR ROLLER ROLLER PULLEY TORSION COIL SPRING TORSION COIL SPRING TENSION COIL SPRING TORSION COIL SPRING TORSION COIL SPRING SPRING COMPRESSION COIL SPRING TORSION COIL SPRING TORSION COIL SPRING TORSION COIL SPRING TENSION COIL SPRING TENSION COIL SPRING BELT LEVER SWITCH LEVER SWITCH CONNECTOR ASSY (10P) PHOTO COUPLER SLIDE SWITCH LEAF SWITCH CONNECTOR ASSY (7P)

Dest inati on

Parts No. N09-4193-08 N09-4194-08 N09-4195-08 N09-4196-08 N09-4197-08 N09-4198-08 N09-4199-08 N09-4200-08 N09-4201-08 N19-2086-08 N19-2087-08 N19-2088-08 N19-2089-08 N19-2090-08 N19-2091-08 N19-2092-08 N29-0510-08 N29-0511-08 T31-0220-08 T42-0759-08 T42-0755-08 SCREW SCREW SCREW SCREW SCREW

Description

Dest inati on

3A 3A 2B 3B 1B 1B 1B 1A 3B 1B 1B 1B 2B 2B 3A 3A 1B 2A 2A 2B 1B 1B 2A 2B 2B 2B 2A 3A 1B 1A 1B 2B 3B 1A 1A 2A 2A 2B 1B 1B 1A 2A 1B 1A 2A 1A 3A 3A 3A 3A 2B 2B 2B 2B 3A

1B 1B 3A 1B 2A 1B 1A 2B 3B 2A 3A 1B 1B 3A 2A 1A 2B 2A 1B 1A 1B

SCREW SCREW SCREW SCREW FLAT WASHER FLAT WASHER FLAT WASHER FLAT WASHER FLAT WASHER FLAT WASHER FLAT WASHER RETAINING RING RETAINING RING PLAYBACK HEAD MOTOR ASSY (MAIN) MOTOR ASSY (SUB)

E4 : KRC-28YG

E5 : KRC-28YA
!

20

indicates safety critical components.

KRC-28YG/YA

21

KRC-28YG/YA
SPECIFICATIONS
KRC-28YA/YG TDF Tuner Type Frequency Range (MHz) (Frequency Step) Usable Sensitivity (S/N:26dB) Quieting Sensitivity (S/N:46dB) Frequency Response ( ±3.0dB) S/N(dB) Selectivity(DIN)(dB) Stereo Separation Frequency Range (kHz) (Frequency Step) Usable Sensitivity (S/N:20dB) Frequency Range (kHz) Usable Sensitivity (S/N:20dB) Tape Speed Wow/Flutter(wrms) Frequency Response (Hz) ( ±3.0dB) Separation (dB) S/N Dolby NR OFF CR2 87.5MHz-108.0MHz (50kHz) 0.7 µ V/75 1.6 µ V/75 30Hz-15kHz 65dB(MONO) 80dB (±400kHz) 35dB(1kHz) 531kHz-1611kHz (9kHz) 25 µV 153kHz-281kHz 45 µV 4.76cm/sec. 0.08%(WRMS) 30Hz-14kHz(120 µ s) 43dB(1kHz) 54dB 1800mV/10k 600 40Wx4 26Wx4 100Hz ±10dB 10kHz ±10dB 14.4V 10A 182(mm) 53(mm) 155(mm) 1.4kg 7-3/16(in) 2-1/16(in) 6-1/8(in) 3.1Lbs

FM

MW

LW

CASSETTE

Preout Level(mV)/Load Preout Impedance AMPLIFIER TONE PWR(MAX) PWR DIN45324.+B=14.4V Bass Treble Operating Voltage (11V-16V allowable) Current Consumption Installation Size (W) (H) (D) Weight

GENERAL

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

KENWOOD CORPORATION
14-6, Dogenzaka 1-chome, Shibuya-ku, Tokyo 150-8501 Japan

KENWOOD SERVICE CORPORATION
P BOX 22745, 2201 East Dominguez Street, Long Beach, CA90801-5745, U.S.A. .O.

KENWOOD ELECTRONICS ITALIA S.p.A.
Via G. Sir tori 7/9, 20129 Milano, Italy

KENWOOD ELECTRONICS CANADA INC.
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8

KENWOOD IBÉRICA S.A.

Bolivia, 239-08020 Barcelona, Spain

KENWOOD ELECTRONICS LATIN AMERICA S.A.
P BOX 55-2791, Piso 6, Plaza Chase, CI. 47 y, Aquilino de la Guardia, Panama, .O. Republic of Panama

KENWOOD ELECTRONICS AUSTRALIA PTY. LTD. (A.C.N. 001 499 074)
16 Giffnock Avenue, North Ryde, N.S.W. 2113, Australia

KENWOOD ELECTRONICS BRASIL LTDA. KENWOOD ELECTRONICS UK LIMITED

KENWOOD ELECTRONICS (HONG KONG) LTD. KENWOOD ELECTRONICS GULF FZE
P Box 61318, Jebel Ali, Dubai, U.A.E. .O.

Av. Moema, 170-17°, Andar-Cobertura "B", Ed. Maximum Service Center, 04077-020 Moema, São Paulo-SP-Brasilil Kenwood House, Dwight Road, Watford, Herts, WD1 8EB United Kingdom

Unit 3712-3724, Level 37, Tower 1, Metroplaza, 223 Hing Fong Road, Kwai Fong, N.T., Hong Kong

KENWOOD ELECTRONICS DEUTSCHLAND GMBH
Rembrücker-Str. 15, 63150 Heusenstamm, Germany

KENWOOD ELECTRONICS (THAILAND) CO., LTD.
2019 New Pechburi Road, Bangkapi, Huaykwang, Bangkok, 10320 Thailand

KENWOOD ELECTRONICS FRANCE S.A.
13, Boulevard Ney, 75018 Paris, France

KENWOOD ELECTRONICS SINGAPORE PTE. LTD.
1 Genting Lane #07-00, Kenwood Building, Singapore, 349544

KENWOOD ELECTRONICS BELGIUM N.V.
Mechelsesteenweg 418, B-1930 Zaventem, Belgium

KENWOOD ELECTRONICS (MALAYSIA) SDN BHD
#4.01 Level 4, Wisma Academy Lot 4A, Jalan 19/1, 46300 Petaling Jaya, Selangor Darul Ehsan, Malaysia