Kenwood KRC-666 Service Manual Download Page 12

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10K

22K

8.8V

1.4V

14.4V

0.6V

8.5V

14.4V

5.0V

0-5.0V

5V
2.5V

5V
0V

5.0V

5V
0V

5.0V

5V
0V

0-5.0V

5V
0V

5.0V

2.5V

5V
0V

8.8V

0.4V

4.1V

0.3V

4.0V

5.0V

IC1

∗

IC4

IC8

IC1

D401

Q52

Q51

D51

D308

D303

D258

D254

D252

D256

Q54

∗

D31

D269

D257

D271

D270

D251

D255

D253

DC-IN SP OUT

NOISE
BUFFER

SYSTEM u-COM

∗

EQ
AM

MSTC SW

CN6

SUB M

MAIN MOTOR
SW

RESET IC

POWER
IC

SERGE

ACC DETECTION

BACK-UP

TEL MUTE

DETECTION

DETECT

POWER

ANTENN

D403

C254

R52

1/2W

R410

100K

R59

C53

470

0.01

VDD

METAL

L RST

ANEL 5V

L-DATAS

PLL CLK

PLL DATA

L-DATAL

L-CLK

EQMUTE

MUSIC

DOLBY

RESET

SUB-

SUB+

MODE3

MODE2

MODE1

ST TYPE1

ST TYPE0

TYPE2

TYPE1

TYPE0

L CE

FLIP DET

DSI

IC2 SDA

R QUAL

R DATA

LX-MUTE

LX-CON

LX-REQM

LX-RST

MUTE

AFS

IC2 SCL

P-MUTE

P-STBY

ACC DET

PCON-DET

PANT-DET

MS MODE

F/R

R-CLK

KEY-REQ

LX-REQS

EJECT

BU-DET

ANEL DET

REMO

FLASH W

FLASH C

BEEP

LX-D

LX-CLK

FLASH R

SUB OSC1

GND

VDD

MAIN OSC1

VSS

DC DET

GND

VREF+

S-METER

IFC-OUT

NOISE

PHONE

VREF-

F REEL

R REEL

SW5V

DAVSS

EN2

EN3

EN1

100

DAVDD

R315

C304

0.01

100K

R314
100K

R313
100K

R309

4.7K

R307

4.7K

R311

100

LXMUTE

RST

LXD

CLK

LXREQS

C256

22u16

R251

33K

R252

47K

C255

0.47u50

0.047

C266

0.047

C264

0.047

C262

C260

0.047

L11

4.7uH

R62

2.7K

C56
0.47

LINEOUT2

TCH2

NC22

MSSW

R67

C62

0.1

G1FB

MSMODE

DRSW

TAPESW

MUTESW

NRSW

MSOUT

MSTC

NC15

G2FB

TCH1

NC9

MSLPF

LINEOUT1

C61

0.1

R11

100K

1/2W

R10

22K

0.01

3.3K

10K

22K

1000P

∗

C31

0.01

∗

R31
10K

∗

R32

100K

0.01

DGOUT

DOUT

DOUT+

COUT

COUT+

CIN

PGND

AIN

OUT+

OUT

BOUT+

BOUT

R256

0.22u50

C252

0.22u50

C251

0.22u50

C253

0.22u50

∗

R262

∗

R260

∗

R259

∗

R261

C258
1u50

R255

100

RR-

FR+

RR+

FR-

FL-

FL+

RL+

RL-

R254

TH1

R257

15K

10K

470

R253

47K

1.5K

C257

0.1

C259
0.047

C261

0.047

C263
0.047

C265
0.047

VCC1

PGNDB

STBY

RIP

PGND

BIN

DIN

UXIN

PGNDC

VCC2

PGNDD

MUTE

3300u16

FL+

FR-

RL+

RL-

FL-

RR-

RR+

FR+

RL+

FL+

CON

RL-

FL-

FR-

RR-

RR+

FR+

MUTE

.CON

GND

140uH

F1 10A

FUSE

R205

2.2K

4.7K

R204

VSS

VDD

VOUT

8.388MHz

32.768kHz

R422 10K

R266 100K

47u6.3

C409

0.01

C410

100K

∗

R411

100K

∗

R416

100K

∗

R420

100K

∗

R421

100K

∗

R417

100K

∗

R412

22P

C407

22P

C408

R83 1K

R82 1K

R81 4.7K

R80 4.7K

R79 10K

R78 4.7K

0.47

C59

10u10

C54 10u10

C55 0.033

R65 220K

R61 47K

33K

R63

4700P

C57

MAIN M

GND

SUB M+

SUB M-

R56 100K

0.22

C75

0.22

C74

10K

R51

0.1

C406

R310 100

R312 100K

R305 4.7K

R308 4.7K

0.01

10K

20K

82K

∗

R33 47K

R9 33K

ANT

TEL

56K

0.1

39K

R15

100K

R16

4.7K

R22

220K

R14

R64

0.01

R418 100K

R413 100K

Q51

C58

X14-9180-2x (2/3)

KRC-666/G/R

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.

www. xiaoyu163. com

QQ 376315150

TEL 13942296513

TEL 13942296513 QQ 376315150 892498299

Summary of Contents for KRC-666

Page 1: ... Panel assy A64 2846 02 KRC 666 A64 2856 02 KRC 666G Escutcheon B07 3022 02 KRC 666 B07 3054 02 KRC 666G DOLBY B NR Panel assy A64 2845 02 KRC 666R Escutcheon B07 3022 02 KRC 666R CASSETTE RECEIVER KRC 666 G R SERVICE MANUAL 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 www xiaoyu163 com QQ376315150 9...

Page 2: ...e Knob 1 Remove the peeling paper of LIGHTING BOARD BOSS side 2 CAP and LIGHTING BOARD are install positioning as shown 5 Install a Volume Knob in rotary encoder positioning as shown KNOB VOL BROAD SIDE OTHER SIDE Mount the Volume Knob into the broad Y shaped cutting in the direction of the picture 3 Remove the peeling paper Use Tweezers 4 CAP and Volume Knob are install positioning as shown www x...

Page 3: ...L MP IN LEVEL TAPE CH AM FM MODE2 MODE3 SUB MOT B SUB MODE1 FOR L FOR R REV L R REEL F REEL REV R MTL ON OFF DOLBY ON OFF MUTE MS OUT MS MODE F R SW5V A8V BACK UP SUB SUB MOT B LX REQ M BACK UP LX RST LX MUTE LX DATA S LX DATA M LX CON LX CLK LX REQ S BU5V I2C DATA I2C CLK PANEL EJECT ILL EJECT REMO VOLUME B VOLUME A L DATAL L CE L DATAS L CLK ILLUMI BU5V A8V FM B AM B BU5V ACC DET B U DET PHONE E...

Page 4: ... Q3 ACC detection L when Acc is present Q4 SW 5V ON when the base is L Q5 Power antenna detection H when P ANT output is short circuit P ANT OFF L when FM AM signal does not exist Q6 P CON detection H when P CON output is short circuit Q51 Main motor switch 1 Outputs 14V when the base is L Q52 Main motor switch 2 Q51 turns ON when the base is H Q53 Sub motor AVR Output 3 6V when the base of Q4 is ...

Page 5: ...H 20 LX CLK LX O Clock input and output with CH 21 FLASH READ O 22 FLASH WRITE O 23 FLASH CLK O 24 BEEP AUDIO O Beep for built in amplifier 25 PANEL DET to PANEL I Panel existence detection terminal Detached the panel L Attached the panel H 26 REMO to PANEL I Remote control input 27 R CLK TUNER I Clock for RDS decoder With no destination out put L fixing 27 NC O With no RDS output L fixed 28 LX RE...

Page 6: ...m sub motor Refer to Trush table 2 75 SUB TAPE O Cassette mechanism sub motor Refer to Trush table 2 76 R QUAL TUNER I RDS quality 76 NC O When with no RDS output L fixed 77 R DATA TUNER I RDS data 77 NC O When with no RDS output L fixed 78 LX MUTE LX I Mute request from CH H MUTE ON L MUTE OFF 79 LX CON LX O Control output to CH ON H OFF L 80 LX REQM LX O Request output to CH Request detection L ...

Page 7: ...ism conditions SUB MOTOR SUB MOTOR condition L L Stop Power off L H Normal rotation way to loading H L Reverse way to eject H H Stop Power on Trush table 2 Cassette mechanism sub motor EN1 ILL L OFF H ON Trush table 3 Power supply IC TDA3682 EN1 Control Model number TYPE0 TYPE1 TYPE2 ST TYPE0 ST TYPE1 KRC 766 L L L L L KRC 694 Y L L H L L KRC 666R L H L L L KRC 594 Y L H H L L KRC 594V YV H L L L ...

Page 8: ...d Middle Forced Narrow AUTO The initial status is AUTO and the display shows these modes as follows AUTO FMA Forced Wide FMW Forced Middle FMM Forced Narrow FMN 7 Test mode specifications of the cassette receiver BLANK SKIPP OFF 8 Audio related specifications A short press of the Q key initiates the audio adjustment mode Pressing the key on the remote initiates the audio adjustment mode Fader is s...

Page 9: ...enters K Press the 2 key on the remote 3 times then press the Track Up key This enters C Press the 2 key on the remote once then press the Track Up key This enters A Press the 7 key on the remote twice then press the Track Up key This enters R 3 Security function is canceled and the unit enters the All OFF mode 4 If you commit a mistake in the code entry the unit enters the code request mode Versi...

Page 10: ...TAPE PLAY Head Azimuth Screw Adjust the azimuth for each Lch Rch or FWD RVS becomes maximum 2 PLAY BACK LEVE TCC 130 Connect an AC voltmeter to CN9 X14 TAPE PLAY VR1 L VR2 R X14 388mV a CASSETTE DECK SECTION ITEM INPUT SETTINGS OUTPUT SETTINGS TUNER RECEIVER SETTINGS ALIGNMENT POINTS ALIGN FOR FIG 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...

Page 11: ...360 10u16 RR 360 10u16 C352 R352 R357 R374 1K 1 2 22K R355 180 22K 180 R356 R358 0 022 0 01 14 15 C204 C207 R201 10K C202 C201 1 2 2u35 1 C203 R206 1K 7 22 CDGND CDR CASSR CASSL CREF VREF 3 2 1 6 5 4 LFOUT ACOUTR ACOUTL 26 27 28 RROUT LROUT RFOUT 23 24 25 MPIN LEVEL MPX AM AFS NC CDL 10 9 8 13 12 11 SCL SDA GND VDD 19 20 21 NC QUAL SMUTE 16 17 18 C353 10u16 C354 W3 10u16 C210 C211 47u10 0 01 C303 ...

Page 12: ...16 15 14 13 G2FB 12 11 10 7 TCH1 NC9 MSLPF 8 9 LINEOUT1 C61 0 1 R11 100K 1 2W R10 22K 0 01 C4 3 3K R8 R6 10K R7 22K C3 1000P C31 0 01 R31 10K R32 R3 100K C2 0 01 DGOUT DOUT DOUT COUT COUT CIN PGND AIN AOUT AOUT BOUT BOUT TAB R256 0 22u50 C252 0 22u50 C251 0 22u50 C253 0 22u50 R262 R260 R259 R261 C258 1u50 R255 100 21 5 1 3 RR FR 7 RR FR 9 15 11 13 19 17 FL FL 25 23 RL RL R254 TH1 R257 15K 10K 470 ...

Page 13: ...12 NC 6 MODE1 9 F REEL ANODE R REEL 10 11 MODE2 SW 5V 7 8 MODE3 4 5 GND R54 100K R55 100K R56 100K 71 70 72 R76 47K R77 47K R53 120 0 22 C74 10u16 C26 C27 10u50 C20 220P 97 96 98 220P C21 10K R25 10K R24 90 91 4 7K R23 0 1 C7 0 1 C8 39K R18 39K R15 100K R16 100K R19 4 7K R22 4 3 R13 2 7K AM FM 220K R17 220K R14 2 3 75 74 VCC 47K R12 Q6 Q5 99 10 11 12 4 8 7 9 5 6 1 2 3 1 2 4 3 5 NC R REEL ANODE MOT...

Page 14: ...3 S22 S14 S9 S7 S6 S8 S5 S12 S13 S11 S10 S18 S20 S19 S17 S16 S15 SEG34 SEG36 SEG37 SEG35 SEG38 SEG33 49 SEG41 SEG42 COM3 COM2 COM4 SEG39 47 48 46 KS4 KS2 KS3 COM1 42 43 44 45 41 37 38 39 36 40 33 34 35 SEG4 55 KI4 KI2 KI3 KI1 KI0 KS5 52 50 51 53 54 V2 V1 V0 VDD OSC VSS 58 56 57 59 61 60 CE SO SI SCL 63 62 64 GREEN SEG3 RED 1 3 2 20 26 27 28 29 30 32 31 SEG30 SEG32 SEG31 SEG27 SEG29 SEG28 21 22 24 ...

Page 15: ...5 SEG20 SEG21 SEG19 SEG17 SEG18 SEG16 SEG12 SEG14 SEG13 SEG11 SEG10 SEG6 SEG8 SEG7 SEG5 SEG4 S3 S4 S6 S7 S5 S9 S10 S8 S14 S12 S13 S11 S15 S16 S32 S29 S31 S30 S28 S27 S24 S25 S26 S23 S22 S19 S20 S21 S18 S17 S39 S35 S37 S88 S36 S34 S33 S42 S41 39 SEG3 X16 2030 21 2 2 18 KRC 666 G R CAUTION For continued safety replace safety critical components only with manufacturer s recommended parts refer to par...

Page 16: ... CP4 R4 R6 R14 CP1 48 33 1 16 17 32 64 49 J1 EB Q4 E B Q1 IC1 ILL GND X16 2030 21 J74 1452 02 R2 C1 1 15 16 2 R1 R3 R4 R11 R6 R13 R7 R5 R12 R9 R10 R8 D1 J1 X89 2570 11 J74 1450 02 S1 17 1 2 18 CN1 X89 2570 11 J74 1450 02 PC BOARD COMPONENT SIDE VIEW FOIL SIDE VIEW Ref No address IC1 4D IC2 6B Q1 5C Q4 5C X16 2030 21 KRC 666 G R Refer to the schematic diagram for the values of resistors and capacit...

Page 17: ... C256 C258 W79 R8 R22 R23 X1 L3 C69 C70 W16 C251 C252 C253 C254 C301 C302 C303 C351 C352 C353 C354 L6 L8 R9 R13 R14 R17 R31 R52 W71 X2 X3 W43 W84 W81 W68 W66 W6 W40 W47 W46 W44 W30 W53 W54 W56 W55 W50 W48 W64 W42 W31 W35 W21 W3 W37 W38 W41 W45 W24 W22 W23 W39 W18 W20 W19 W28 W34 W29 W49 W76 W77 W74 W73 W72 W69 W67 W62 W63 W58 W61 W65 W60 W82 W27 W80 W59 W78 W11 W83 W57 W13 W15 W10 W12 W4 W1 W7 W5 ...

Page 18: ...313 R314 C304 C6 R4 R15 C7 C259 R7 R259 C265 C262 R261 C266 R260 C264 R305 R262 TH1 R307 R304 R303 R306 R301 R302 C108 R51 R53 C74 R103 C114 R105 C106 R117 C102 C104 R 58 R360 R311 R308 R310 R309 R362 R364 R359 R363 R361 R352 R356 1 4 8 5 1 8 16 9 1 5 10 6 1 14 28 15 1 7 8 14 1 10 11 20 21 30 31 40 1 25 26 50 76 100 75 51 E B R81 1 2 4 3 IC10 IC7 IC9 IC1 IC8 IC6 IC2 IC11 D165 Q1 Q3 D403 Q4 D163 Q1...

Page 19: ... 21 24 45 23 65 65 66 66 67 67 10 11 1 31 30 9 9 HD1 17 15 4 22 12 12 20 5 6 7 26 48 48 49 27 94 91 92 94 D N G H C C F B E E E B G 893 H N D 876 Ax2 Ax2 K J J 44 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 20: ...8 φ2x6 φ2x8 φ3x5 φ2x5 φ2 6x6 φ3x8 φ3x8 φ3x20 210 201 260 261 206 727 747 216 234 237 251 CL1 218 241 231 217 236 240 203 282 221 214 254 243 253 257 256 255 212 211 250 213 232 252 PA1 284 281 280 283 242 235 205 233 F1 CME1 244 DC1 215x2 262 DC2 RM1 771 770 772 728 702 704 745 767 746 766 786 785 708 720 765 E E E E E E E G G G C Cx2 Dx2 Dx2 F Bx2 E H K J Kx2 Ax2 Ax2 www xiaoyu163 com QQ376315150...

Page 21: ...1C J22 0011 03 MOUNTING HARDWARE ASSY 250 3C K23 1072 13 KNOB VOL 251 3D K24 4000 03 KNOB EJECT KRC 666 G R 252 3C K24 4002 04 KNOB OPEN 253 3C K25 1521 03 KNOB 1 6 254 3C K25 1522 04 KNOB DISP 255 3C K25 1523 03 KNOB PRO 256 3C K25 1524 03 KNOB FM AM 257 3C K25 1525 03 KNOB SRC 260 1C N99 1719 05 SCREW SET 261 1C N99 1730 15 SCREW SET A 2D N09 4368 05 MACHINE SCREW B 3D N30 2608 46 PAN HEAD MACHI...

Page 22: ... R111 RK73GB2A472J CHIP R 4 7K J 1 10W M2 R112 114 RK73GB2A222J CHIP R 2 2K J 1 10W M2 R116 RK73GB2A104J CHIP R 100K J 1 10W M2 R117 RK73GB2A100J CHIP R 10 J 1 10W M2 R152 155 RK73GB2A471J CHIP R 470 J 1 10W R157 159 RK73GB2A102J CHIP R 1 0K J 1 10W R160 RK73GB2A222J CHIP R 2 2K J 1 10W C115 C90 2597 05 ELECTRO 10UF 16WV M2 C116 CC73GCH1H331J CHIP C 330PF J M2 C117 C90 2600 05 ELECTRO 2 2UF 35WV M...

Page 23: ...03J CHIP R 10K J 1 10W VR1 2 R12 3100 05 TRIMMING POT 10K W102 R92 1252 05 CHIP R 0 OHM J 1 16W M3M4 W102 103 R92 1252 05 CHIP R 0 OHM J 1 16W M2 W104 R92 1252 05 CHIP R 0 OHM J 1 16W M3M4 S1 S74 0821 05 MICRO SWITCH D1 1N5393G M6 DIODE D2 4 MA4068 N M ZENER DIODE D22 25 AM01Z DIODE D31 HZS5B1 ZENER DIODE M2 D51 AM01Z DIODE D52 MA4043 M ZENER DIODE D151 155 MA4062 L ZENER DIODE D157 158 MA4062 L Z...

Page 24: ...2E471J CHIP R 470 J 1 4W R6 7 RK73EB2E102J CHIP R 1 0K J 1 4W R8 10 RK73EB2E471J CHIP R 470 J 1 4W R11 13 RK73EB2E102J CHIP R 1 0K J 1 4W S1 S70 0871 05 TACT SWITCH 1 2B A10 4630 08 CHASSIS ASSY 4 2B D10 4375 08 SLIDER 5 3A D13 1494 08 GEAR 6 3A D13 1495 08 GEAR CASSETTE MECHANISM ASSY D40 1147 05 DAUGHTER UNIT X89 2570 11 SWITCH UNIT X16 2030 21 7 3A D13 1496 08 GEAR 9 1B D10 4376 08 ARM 10 2B J9...

Page 25: ...80 100 More than 10µF 10 50 20 20 0 Less than 4 7µF 10 75 Voltage rating 2nd word A B C D E F G H J K V 1st word 0 1 0 1 25 1 6 2 0 2 5 3 15 4 0 5 0 6 3 8 0 1 10 12 5 16 20 25 31 5 40 50 63 80 35 2 100 125 160 200 250 315 400 500 630 800 3 1000 1250 1600 2000 2500 2150 4000 5000 6300 8000 CHIP CAPACITORS EX C C 7 3 F S L 1 H 0 0 0 J Refer to the table above 1 2 3 4 5 6 7 1 Type Chip CH RH UJ SL 2 ...

Page 26: ...ncements in development For this reason specifications may be changed without notice Manufactured under license from Dolby Laboratories Dolby and the double D symbol are trademarks of Dolby Laboratories FM tuner section Frequency range Frequency step 87 5MHz 108 0MHz 50kHz 87 5MHz 108 0MHz 50kHz 87 9MHz 107 9MHz 200kHz Channel space selection 50k 200kHz 50kHz Usable sensitivity S N 26dB 0 7µV 75Ω ...

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