background image

A

B

D

F

H

J

C

E

G

I

2

1

3

5

7

4

6

4.0V

4.0V

4.0V

0V

4.0V

0V

4.0V

4.0V

4.0V

13.9V

0V

0V

0V

0V

4.6V

0V

4.6V

0V

0.1V

4.0V

1.7V

1.7V

0.8V

4.0V

1.2V

0V

0V

8.1V

0V

4.0V

4.0V

0V

5.0V

0V

5.0V

5.0V

0V

5.0V

4.1V

4.1V

4.6V

1.0V

1.0V

4.1V

4.1V

4.2V

4.0V

0.1V

0.1V

0V

3.5V

5.0V

4.9V

0V

8.2V

4.1V

4.1V

4.1V

4.1V

0V

0V

0V

0V

0V

5.1V

5.1V

4.4V

5.0V

0V

0V

5.1V

0V

5.1V

5.1V

5.1V

5.1V

0.8V

4.0V

4.0V

0.6V

0V

0V

0V

0V

5.1V

0V

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

1

2

3

4

5

6

7

8

9

10

31

32

33

34

35

36

37

38

39

40

PB TC2

PB OUT2

OUT

 REF2

T

APE IN2

GND

DIREF

LINE OUT2

TCH2

NC

MS SW

MS MODE

DR SW

TAPE SW

MUTE SW

NR SW

NC

MS OUT

MSTC

G1FB

G2FB

PBTC1

PB OUT1

OUTREF1

T

APE IN1

VCC

NC

LINE OUT1

TCH1

NC

MSL

 PF

PB FB2

PBR IN2

PB GND

PBF IN2

VCT

PB REF

PBF IN1

PB GND

PBR IN1

PBF B1

1

2

3

4

5

6

7

CH-MUTE

BU DET

CH-RST

P-IC

14

13

12

11

10

9

8

MUTE

OUT

E VOL

8

7

6

5

4

3

2

1

FIL

 OUT

ARI

GND

OSEL

MPX

VREF

RDDA

QUAL

9

10

11

12

13

14

15

16

FSEL

TM

EXTRES

VS

OSC IN

OSC OUT

T57

RDCL

1

2

3

4

5

6

7

8

9

10

11

12

13

14

VREF

CREF

CASSL

CASSR

CDR

CD GND

CDL

PHGND

PHONE

AM

MPX

LEVEL

MP IN

MP OUT

28

27

26

25

24

23

22

21

20

19

18

17

16

15

AC OUT L

AC OUT R

OUT LF

OUT RF

OUT LR

OUT RR

VS

GND

SDA

SCL

S MUTE

QUAL

MUXR

MUXL

1

2

3

4

5

6

7

8

9

10

11 12 13

ILL+B

ILL

 GND

PNL

 5V

D GND

D

ATA

 S

D

ATA

 L

CE

INH

CLK

REMO

PNL

 DET

GND

RST

VREF

Lch REV

Rch REV

Rch FWD

Lch FWD

PLL+B

AM+B

AM ANT

FM ANT

2

1

3

RF GND

5

4

6

OSC GND

FM+B

VT

OSC GND

OSC GND

OSC GND

OSC GND

8

7

9

11

10

12

IF2 GND

VDD5V

IFC OUT

SCL

14

13

15

SDA

17

16

18

D GND

AUDIO OUT

SD

22

20

21

S-METER

23

24

IF1+B

19

L101 52mH

4.7uH

L100

C100 0.01

C101 100u10

+

L102 4.7uH

C103 100u10

L103 4.7uH

C102 0.01

+

L104 4.7uH

C105 0.01

C106 100u10

+

4.7uH

C107 0.01

C108 100u10

+

27

95

28

R100

150

L105

L106 4.7uH

C109 0.1

C1

10 100u10

+

IF1 GND

IF2 +B

C104 0.1

56

94

1

2

1K

R105

4.7K

R106

2.2K

R104

2.2K

R102

22K

R103

22K

R101

98

97

C301B 2.2

C301A 2.2

C300 2.2

1K

R300

C306 0.1

C307 120P

0.015

C303

R301 2.7K

C305 150P

R303 4.7K

R302 4.7K

0.47

C304

C302 0.033

1

3

2

2

1

1K

R308

4.7K

R307

1K

R306

C309 47u16

+

L300 4.7uH

C310 0.01

2.2K

R305

R304 0

0.082

C308

23

24

55

93

10P

C154

10u16

+

0.01

10P

C155

X150

4.332MHz

2.2K

RN150

10u16

C150

+

270P

C151

92

91

45

C152

C153

L150 4.7uH

1000P

C214B

0.1u50

C206B

+

180

R202B

0.01

C205B

6.8K

R210B

3.3K

R211B

R205

C207B

10K

VR200B

22u16

+

C204

R208 100K

R207 68K

R206 5.6K

C210 4700P

C209 0.47

C211 0.022

C212 10

R205 10K

88

83

84

87

85

86

C205A

0.01

R202A

180

VR200A

10K

C206A

0.1u50

+

R210A

6.8K

3.3K

R21

1A

C208 22u16

+

1000P

C214A

C207A

 0.1

R204 10

F REEL

R REEL

ANODE

S MOTOR-

MODE1

MODE3

SW5V

MODE2

M MOTOR+

S MOTOR+

GND

1

2

3

4

5

6

7

8

9

10

11

1

2

3

4

5

R201A

 100K

C201A

 470P

C200A

 470P

R200A

 100K

C201B 470P

R201B 100K

C200B 470P

R200B 100K

5

4

3

2

1

2

3

5

4

1

Rch

3

GND

2

Lch

1

31

2

C

MAIN MOTOR

SUB MOTOR

SUPPL

Y

T

AKE OFF

4

11

10

9

8

7

6

5

2

3

1

2

1

4

3

5

OUT2

14

15

17

16

CD2

13

12

VCC2

VCC1

10

11

5

22

GND

GND

19

18

20

21

GND

IN2

8

9

IN1

7

6

24

OUT1

23

25

26

3

VR

4

CD1

2

1

R252

0.047

C253

C254 0.1

10 1/2W

R251

10 1/2W

R250

C251 0.047

C250 0.1

C252 0.047

34

35

R253

60

59

50

48

49

120

100

11

13

10u16

+

C255

1K

RN4

RN5 1K

12MHz

X1

R64 680K

22P

C3

22P

C4

X2

32.768KHz

R45 4.7K

R44 4.7K

49

50

48

41

32

47K

R23

C6 1

C5 0.01

34

35

4

9

0.01

C13

R51 1K

R52 1K

R54 470

R53 220

R57 220

R56 47

R55 470

R50 100

100K

R58

69

70

76

77

68

74

27K

R60

47K

R59

CH CON

DA

T

A

 C

REQ H

MUTE

D GND

RESET

Rch

A

 GND

8

4

12

6

A GND

4
5

MUTE

CHCON

12

Lch

CLK

13

DATA C
DATA H

10

11

2
3

B.U

D GND

1

REQ H

Rch

REQ C

8
9

RESET

7

7

3

11

6

2

10

5

1

9

DA

T

A

 H

REQ C

CLK

Lch

13

8

2

4

1

5

3

12

13

10

6

7

9

11

R408 100

R401B 100

R406 4.7K

R407 4.7K

R403 2.2K

R405 2.2K

R401A

 100

R402 100

R400 100

R404 2.2K

100K

R409

C400 0.1

RN400 100K

30

29

9

4

65

67

66

46

3

FL

1

RL

FR

GND

RR

GND

5

3

2

4

6

C354

0.1

100

R356A

C352A

2200P

C352B

2200P

R354A

22K

R354B

22K

R356B

100

100

R357A

R352A

470

470

R352B

470

R353A

2200P

C353A

C353B

2200P

R355A

22K

22K

R355B

R357B

100

R353B

470

10u16

+

10u16

+

10u16

+

10u16

C351B

+

1

2

1000P

C404B

1000P

C404A

C402B 0.47u50

+

C402A 0.47u50

+

C403 47u16

+

B.U

2

3

1

45

46

C351A

C350B

C350A

22K

0.1

33

C213 0.47

R209 47K

351A,B

Q350A,B,

0.01

C10

4

5

6

7

6

7

5

4

4

5

6

7

0.01

C21

0.01

C9

C17 0.01

C18 0.01

0.01

C19

PRE

uCOM

IC200

IC3

IC150

IC300

TU100

C-MECHA

IC250

IC2

MAIN UNIT

CN3

CN201

D100

CN100

Q100

Q102

Q101

Q103

Q104

FM+B
SW

AM+B
SW

FM+B

AM+B

BUFFER

RDS

D300

DETECTION

SELECTION

CONSTANT

NOIS

NOISE
BUFFER

E-VOL.NC.
MPX

SW

MUTE

Q302

Q303

Q301

Q300

C

B

RDS
DECODER

A

CN250

CN200

Rch FWD

Rch REV

Lch REV

M

Lch FWD

M

D251

D250

MOTOR DRIVER

Q2

MUTE SW

GATE IC

RESET IC

Q5

5V SW

CN400

D401

D400B

D400A

D405

D404

D403

D402

CN350

D350B

D350A

Q350A

Q350B

Q351B

Q351A

D352A

D352B

DOLBY TP

13P DIN CONNECTOR

EQ-AMP,MS.DOLBY

MUTE
DRIVER

MUTE

FL

FR

RL

RR

47K

47K

47K

47K

47K

47K

22K

22K

10K

22K

22K

4.7K

4.7K

4.7K

4.7K

w w w . x i a o y u 1 6 3 . c o m

Q Q 3 7 6 3 1 5 1 5 0

9

9

2

8

9

4

2

9

8

T E L

1 3 9 4 2 2 9 6 5 1 3

9

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

Q

TEL  13942296513  QQ  376315150  892498299 

TEL  13942296513  QQ  376315150  892498299 

Summary of Contents for KRC-508S

Page 1: ...9585 08 DC cord assy E30 4864 08 Plastic cabinet assy A02 1494 08 The CASSETTE MECHANISM OPERATION DESCRIPTION is the same model D40 1122 05 Please refer to the service manual for model D40 1122 05 B51 7452 00 Stay J54 0611 08 Escutcheon B07 2186 08 Screw set N99 1689 08 Screw set N99 1688 08 KRC 688 KRC 508S Panel assy A64 2088 08 Front glass assy B10 3208 08 Escutcheon assy B07 2195 08 Remote co...

Page 2: ... USED KRC 680R 578R RY 508S 688 KRC 680R KRC 508S KRC 578R RY KRC 688 E KRC 578R RY KRC 508S K KRC 680R 688 M CASS AM E AM K M FM E FM K M CD CH 310mV E K M E K M 1200mV FM K M CASS AM FM E CD CH FM K M CASS FM E AM K M AM E CD CH FRONT REAR CD CH CASS AM E AM K M FM E FM K M 730mV 560mV 1280mV 1660mV 2900mV 1490mV 400Hz 40KHz Dev 400Hz 75KHz Dev 1KHz 0dB 400Hz 30 Mod 1KHz 0dB 1370mV 670mV 1180mV ...

Page 3: ...Lighting OFF Lo 22 TEST IC test pin 23 P90 IC2_SDA I O E VOL E s data input output 24 P91 IC2_SCK O E VOL E clock output 25 P92 MUTE O Muting control Muting ON Hi Muting OFF Lo 26 P93 SW5V O SW 5 V control ON LO OFF HI 27 P94 F E_DATA I O IC3 data input output 28 P95 F E CLK O IC 3 clock output 29 P120 RTP0 CH_CON O CH control ON HI 30 P121 RTP1 CH_REQH O CH send request output Requested Lo 31 P12...

Page 4: ...75 P27 SCK0 NC O Not used 76 P80 A0 LCD_INH O Reset output to LCD driver 77 P81 A1 LCD_CE O CE output to LCD driver 78 P82 A2 SRT_SW1 I SRT position detection input 79 P83 A3 SRT_SW2 I SRT position detection input 80 P84 A4 NC O Not used 81 P85 A5 NC O Not used 82 P86 A6 NC O Not used 83 P87 A7 C MSC O EQ amp FF PLAY control PLAY HI OFF LO 84 P40 AD0 C F R O Tape transport direction switching FWD ...

Page 5: ...OFF 3 Press and hold the AUDIO key for 1 second to enter menu mode 4 Press the FM AM key to select SECURITY 5 Press and hold the Track Up Down for 2 seconds 6 Enter the code by pressing the Preset 1 2 3 and 4 keys Example To enter 3510 Press the Preset 1 key 4 times Press the Preset 2 key 6 times Press the Preset 3 key 2 times Press the Preset 4 key once 7 Press and hold the DISPLAY key for 3 seco...

Page 6: ...nect a AC voltmeter to CN200 TAPE PLAY VR200A L VR200B R 300mV a F E CASSETTE MECHANISM VR200B VR200A Rch Lch CN200 L G R a 300mV AC voltmeter ATTENTION OF ASSEMBLY Assembly of FPC Flexible PC board onto Roller ass y Turn Roller ass y by 4 times Hook the end of Roller ass y to the tongue Insert the FPC into the slit of Roller ass y then release the end of Roller ass y and the tongue www xiaoyu163 ...

Page 7: ... R254 R255 C507 R32 C506 L600 C600 C508 C509 C350A C350B C511 X150 RN1 RN150 RN7 RN6 C208 C204 C103 C106 C108 C101 C150 C152 C110 C351B C351A RN4 X2 X1 RN5 R607 C626 JC48 C9 JC6 1 1 11 10 2 13 25 14 1 14 28 15 1 1 1 25 1 24 3 1 13 1 1 4 24 3 1 1 6 4 5 2 2 2 1 9 2 5 3 7 4 8 6 12 10 11 13 8 16 18 17 9 7 1 8 16 9 8 1 1 1 5 4 2 10 11 20 21 30 31 40 30 80 51 50 31 81 100 14 B E B E E B E B E B E B E B ...

Page 8: ... C402A C309 JW1 JW9 JW17 JW10 JW2 JW11 JW13 JW5 JW8 JW7 JW12 JW3 JW4 E B E B E B E B R604 R612 R614 R610 R251 R250 C255 C609 C12 R43 JC47 R254 R255 C507 R32 C506 L600 C600 C508 C509 C350A C350B C511 X150 RN1 RN150 RN7 RN6 C208 C204 C103 C106 C108 C101 C150 C152 C110 C351B C351A RN4 X2 X1 RN5 R607 C626 JC48 C9 JC6 1 1 11 10 2 13 25 14 1 14 2 8 15 1 1 1 25 1 24 3 1 13 1 1 4 24 3 1 1 6 4 5 2 2 2 1 9 ...

Page 9: ... 84 87 85 86 C205A 0 01 R202A 180 VR200A 10K C206A 0 1u50 R210A 6 8K 3 3K R211A C208 22u16 1000P C214A C207A 0 1 R204 10 F REEL R REEL ANODE S MOTOR MODE1 MODE3 SW5V MODE2 M MOTOR S MOTOR GND 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 R201A 100K C201A 470P C200A 470P R200A 100K C201B 470P R201B 100K C200B 470P R200B 100K 5 4 3 2 1 2 3 5 4 1 Rch 3 GND 2 Lch 1 3 1 2 C MAIN MOTOR SUB MOTOR SUPPLY TAKE OFF 4 1...

Page 10: ...14 20 6 FR 4 5 FR P ANT 15 ILL B U 16 AMP CONT MUTE 13 14 2 3 P CON ACC 1 GND RR RR 11 12 RL 10 3 1 15 16 4 2 7 5 12 11 8 10 6 FUSE 18 17 FUSE RL FL FL 7 8 9 9 13 14 17 18 CHOKE COIL L600 Q622 625 Q621 624 Q618 620 Q616 617 Q614 615 Q610 611 784217AGF504 IC1 IC200 CXA2560Q KRC 678R RY UNIT No A YES E NO G YES CN200 YES R10 25 105 106 R205 207A 207B YES R210A 210B 211A 211B NO R644 YES YES VR200B V...

Page 11: ...48 SEG49 SEG50 52 53 50 51 SEG3 SEG36 SEG1 SEG2 1 2 3 4 COM3A COM2A COM1 NC 68 69 66 67 S49 S48 S46 S45 S43 S42 S40 S38 S35 SEG11 SEG7 SEG5 SEG4 SEG6 SEG10 SEG9 SEG8 5 6 7 8 9 10 11 12 SEG15 SEG14 SEG13 SEG12 SEG16 SEG17 SEG18 13 14 15 16 17 18 19 20 SEG39 1 SEG38 NC SEG35 NC 64 65 62 63 SEG42 NC SEG40 60 61 58 59 SEG58 2 SEG45 NC SEG43 56 57 54 55 SEG50 SEG49 SEG48 SEG46 52 53 50 51 S3 SEG36 SEG3...

Page 12: ... 08 M M M M D N G H C C F B E E E B G H N D Ax2 Ax2 K J J 1 2 3 A B Parts with exploded view numbers larger than 700 are not supplied 17 KRC 508S 688 EXPLODED VIEW www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 ...

Page 13: ... M2x1 8 BLK M2x2 5 M2x2 5 NI 2x8 BLK 1 7x5 N P Q R S N35 3004 45 N35 2004 45 N19 2148 08 N19 2149 08 N29 0518 08 3x4 2x4 BLK WASHER WASHER E RING RC1 201 274 262 275 258 212 DC1 222x2 size AAA battery Not supplied CN600 L600 F 1 CN100 CN350 TU100 284 MAIN CON MAIN S801 S800 SW PWB UNIT SW LCD900 CON 295 CON 292 CON 294 CON 293 703 777 216 271 270 265 242 268 264 269 PA1 215 267 796 251 Depends on ...

Page 14: ...14 08 LEVER N 2C N35 3004 45 SCREW 3X4 P 2C N35 2004 45 SCREW 2X4 BLK 223 2C D13 2088 08 GEAR IDOL Q 2C N19 2148 08 C WASHER 224 2C D14 0745 08 ROLLER FPC R 2C N19 2149 08 C WASHER CME1 1D D40 1141 08 CASSETTE MECHANISM ASSY S 2C N29 0518 08 E RING 228 3C E29 1807 08 CONDUCTIVE RUBBER T 1D N09 4368 05 SCREW M3X3 5 232 2C E39 0360 08 FLEXIBLE PCB ASSY 233 2C E58 0895 05 CONNECTOR 13P TDF DC1 1C E30...

Page 15: ... C 2 2UF K C302 C90 5326 08 CHIP C 0 033UF K F1 F06 1032 05 FUSE 10A C303 CK73GB1H153K CHIP C 0 015UF K C304 CK73FB1C474K CHIP C 0 47UF K 284 2D J19 5009 08 CHOKE COIL HOLDER C305 CC73FCH1H151J CHIP C 150PF J L1 L33 1055 08 CHOKE COIL 4 7uH C306 CK73GB1C104K CHIP C 0 10UF K L100 L33 1055 08 CHOKE COIL 4 7uH C307 CC73FCH1H121J CHIP C 120PF J L101 L33 1123 05 ANT COIL 52mH C308 CK73GB1C823K CHIP C 0...

Page 16: ...0W R357A B RK73FB2A101J CHIP R 100 J 1 10W R28 29 RK73FB2A104J CHIP R 100K J 1 10W R400 RK73FB2A101J CHIP R 100 J 1 10W R32 RK73EB2B104J CHIP R 100K J 1 8W R401A B RK73FB2A101J CHIP R 100 J 1 10W R33 RK73FB2A470J CHIP R 47 J 1 10W R402 RK73FB2A101J CHIP R 100 J 1 10W R34 RK73FB2A221J CHIP R 220 J 1 10W R403 405 RK73FB2A222J CHIP R 2 2K J 1 10W R35 RK73FB2A102J CHIP R 1 0K J 1 10W R406 407 RK73FB2A...

Page 17: ...SISTOR D250 11ES2C DIODE Q615 DTC124EUA DIGITAL TRANSISTOR D251 UDZ3 6B ZENER DIODE Q616 2SA1703 AN TRANSISTOR D300 1SS355 DIODE Q617 DTC124EUA DIGITAL TRANSISTOR D350A B STZ6 2Z ZENER DIODE Q618 2SA1703 AN TRANSISTOR D352A B STZ6 2Z ZENER DIODE Q620 2SC4081 TRANSISTOR D400A B STZ6 2Z ZENER DIODE Q621 DTA124EUA DIGITAL TRANSISTOR D401 STZ6 2Z ZENER DIODE Q622 2SB1565 E F TRANSISTOR D402 405 STZ6 2...

Page 18: ...A DIGITAL TRANSISTOR CM1 1A T42 1002 08 MOTOR ASSY MAIN CM2 1A T42 1001 08 MOTOR ASSY SUB A HD1 2B T31 0230 08 PLAYBACK HEAD 1 2B A10 4630 08 CHASSIS ASSY 4 3B D10 4375 08 SLIDER MAIN PLATE 5 3A D13 1494 08 GEAR B 6 3A D13 1495 08 GEAR C 7 3A D13 1496 08 GEAR D 9 2B D10 4376 08 ARM P G PLATE 10 2B J90 0948 08 GUID 11 2B D15 0919 08 PULLEY MID 12 2B D13 1497 08 GEAR P 15 2B J21 9458 08 MOUNTING HAR...

Page 19: ...Frequency Range 87 5MHz 108 0MHz Frequency Step 200kHz Frequency Step 50kHz Channel Space Selection 50k 200kHz Channel Space Selection 50k 200kHz Usable Sensitivity 9 3dBf Usable Sensitivity 9 3dBF S N 30dB 0 8µV 75Ω S N 30dB 0 8µV 75Ω FM Quieting Sensitivity 15 2dBf FM Quieting Sensitivity 15 2dBF S N 50dB 1 6µV 75Ω S N 50dB 1 6µV 75Ω Frequency Response 30Hz 15kHz Frequency Response 30Hz 15kHz 3 ...

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