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Kenwood KRC-23RA, Service Manual

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CASSETTE RECEIVER

KRC-13RG

SERVICE MANUAL

© 2000-1 PRINTED IN KOREA
B51-7587-00 (K) 2204

KRC-178RA/RG/RYA/RYG
KRC-23RA/RG

ANTENNA ADAPTOR
(T90-0523-05)

(Except KRC-280RG)

KRC-278RA/RG/RYA/RYG
KRC-280RG

KRC-278R

CD/MD-CHANGER CONTROL

KRC-23R

CD/MD-CHANGER CONTROL

KRC-13R

KRC-178R

KRC-280R

CD/MD-CHANGER CONTROL

KRC-13RG (E)

KRC-178RA/RG/RYA/RYG (E)

KRC-23RA/RG (E)

PLASTIC CABINET ASSY
(A02-1486-13)

LEVER
(D10-3031-04) x2

MOUNTING HARDWARE ASSY
(J21-9491-03)

DC CORD
(E30-xxxx-xx)

(Refer to the parts list.)

STAY
(J54-0606-04)

SCREW SET
(N99-1610-15)

(KRC-280RG only)

SCREW SET
(N99-1632-05)

(KRC-280RG only)

AUD

1

2

3

4

5

6

CLK

ATT

SRC

PWR
OFF

SCAN

RDM

REP

T.C/D.SCN

M.RDM

LOUD

DISC

MENU

FM

AM

FF

REW

PR

OG

VOL ADJ

NAME SET

T I

PTY

AUD

1

2

3

4

5

6

CLK

ATT

SRC

PWR
OFF

SCAN

RDM

REP

T.C/D.SCN

M.RDM

LOUD

DISC

MENU

FM

AM

FF

REW

PR

OG

VOL ADJ

NAME SET

T I

PTY

AUD

1

2

3

4

5

6

CLK

ATT

SRC

PWR
OFF

SCAN

RDM

REP

T.C/D.SCN

M.RDM

LOUD

DISC

MENU

FM

AM

FF

REW

PR

OG

VOL ADJ

NAME SET

T I

PTY

AUD

1

2

3

4

5

6

CLK

ATT

SRC

PWR
OFF

T.CALL

LOUD

MENU

FM

AM

FF

REW

PR

OG

VOL ADJ

T I

PTY

AUD

1

2

3

4

5

6

CLK

ATT

SRC

PWR
OFF

T.C/ALL

LOUD

MENU

FM

AM

FF

REW

PR

OG

VOL ADJ

T I

PTY

KRC-278RA/RG/RYA/RYG (E)

KRC-280RG (M)

(KRC-280RG only)

40%

www. xiaoyu163. com

QQ 376315150

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 

Summary of Contents for KRC-23RA

Page 1: ...UD 1 2 3 4 5 6 CLK ATT SRC PWR OFF SCAN RDM REP T C D SCN M RDM LOUD DISC MENU FM AM FF REW PR OG VOL ADJ NAME SET TI PTY AUD 1 2 3 4 5 6 CLK ATT SRC PWR OFF SCAN RDM REP T C D SCN M RDM LOUD DISC MENU FM AM FF REW PR OG VOL ADJ NAME SET TI PTY AUD 1 2 3 4 5 6 CLK ATT SRC PWR OFF SCAN RDM REP T C D SCN M RDM LOUD DISC MENU FM AM FF REW PR OG VOL ADJ NAME SET TI PTY AUD 1 2 3 4 5 6 CLK ATT SRC PWR ...

Page 2: ...R IF2 GND SD FM B P ON ACC DET B U DET SCL MUTE SDA P CON PANEL RESET L CLK L DATA S L DATA L FWD REV MOTOR CH CON DATA H DATA C REQ H REQ C CH CLK Rch COM Lch TAPE MP IN AM MPX OUT RR OUT LR OUT RF Rch LEVEL SCL SDA OUT LF Rch STBY MUTE Rch Lch T MUTE FWD REV BU5V 8V B U CHRST S MUTE 8 5 10 B U 5V AM B VDD 5V PACK IN L RES PHONE CHMUTE BEEP SVR AMP STBY SVR AC GND BEEP Lch Lch Rch Lch 1200mV TAPE...

Page 3: ...hen the back up voltage detection or the changer mute or µ com mute works Q201 FM B SW Works when FM mode is being selected Q203 AM B SW Works when AM mode is being selected Q260 MOTOR B SW Works when TAPE mode is being selected Q261 MOTOR B DRIVER Works when Q260 works Q301 CHANGER RESET SW Works when power supply is being reset and IC6 works Q320 PANEL 5V SW Works when the back up works and pane...

Page 4: ...ute control 43 AMP MUTE O Power IC IC4 mute 44 No connection 45 CH CON O Changer control 46 REC H O Request to head unit 47 No connection 48 SVR O Power IC IC4 discharge control 49 AMP STBY O Power IC IC4 stand by 50 BEEP O Buzzer 51 52 No connection 53 P CONT O Power control on off 54 ACC DET I ACC detection 55 B U DET I Back up detection 56 P ON O Power on pff 57 ILL O Illumination on off 58 FWD...

Page 5: ...l 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 pressing the Track UP Track DOWN keys Sound coordination doesn t appear for the feed 5 KRC 13R 178R 23R 278R 280R www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 ...

Page 6: ...instellung zu wiederholen Verwendetes Band SCC 1659 hergestellt von A BEX Head Angle Adjustment Head height alignment procedure During FWD transport adjust screws F and F so that line A of 2 LINE TAPE passes trough the center of the head shield plate core center area During RVS transport adjust screws R and R so that line B of 2 LINE TAPE passes trough the center of the head shield plate core cent...

Page 7: ...4 1 7 1 14 15 28 16 9 8 1 Q61 IC1 Q52 Q59 Q58 Q57 Q153 Q151 Q150 Q55 Q49 Q54 Q53 Q50 Q500 Q502 Q501 Q353 Q301 Q320 Q352 Q351 IC6 IC7 Q451 Q450 Q260 IC2 Q503 IC3 A1 Q60 Q56 D370 D410 D50 D405 D371 D352 Q51 Q350 D380 D401 D400 D56 D52 D51 D55 D54 D402 D408 D409 D403 D350 D351 D53 Q261 Q201 Q203 D404 D200 D260 P1 IC5 D261 J1 J5 J4 J2 J3 X14 613x xx J74 0958 22 SYNTHESIZER UNIT IC4 D150 D152 D151 WH1 ...

Page 8: ...170 E B E B E B R64 R63 IC7 Q260 Q150 Q501 Q500 Q503 Q502 IC2 IC1 Q301 IC6 IC3 Q351 Q49 Q50 Q352 Q353 Q153 Q450 Q451 Q151 Q320 Q53 Q59 Q52 Q58 Q57 Q54 Q55 Q61 D54 Q261 WH1 D260 P1 D261 J3 X14 613x xx SYNTHESIZER UNIT J74 0958 22 A1 J1 D52 D380 D200 Q203 Q201 D100 D352 D151 D410 D405 D404 D401 D400 D402 D403 D408 D409 J5 J4 D152 D150 D371 D351 Q350 D51 D350 D370 IC4 J2 IC5 CN1 Q51 D56 D50 D53 D55 Q...

Page 9: ...6 10K 2 2K 58 1K R124 1K R123 R120 1K R121 10K 40 39 R119 2 2K R117 4 7K 47K 47K R110 100K 2 2K R111 2 2K 100K 18 17 3 2 1 6 5 11 12 13 16 27 28 32 35 37 38 13 1 12 2 11 3 60 5 36 60 28 27 77 55 53 54 56 C56 100u6 3 5 6K R61 47K R60 10u10 R58 22K 100 R59 C55 C54 0 01 100u16 53 55 R48 100K 100K R49 R125 R108 47K 77 76 78 1K R67 5 3 7 5 9 50 GND 0 01 C163 10K R162 7 47K 6 100K 5 4 3 C164 2 1 9 8 11 ...

Page 10: ...3 C500 C501 270P C502 0 01 10u6 3 C503 C504 10P C505 10P X2 4 3320MHz 4 7K R504 1K 2 2K 2 2K 2 2K 5 6 62 1 2 3 4 5 FWD REV GND HEAD R HEAD COM HEAD L 0 047 C251 10K R251 1500P C2 1500P C1 22K R1 22K R2 100u16 C57 R62 10K 100u10 C58 1K R64 1K R63 R65 2 2 1 2W R66 2 2 1 2W 78 4 7K 2 7K R207 R206 4 3 1K 0 22 0 22 0 022 4 C7 120K R7 100u10 100 100P C5 C9 R5 6 8K R3 L IN 8 L NF L OUT 7 6 C3 47u6 3 3 10...

Page 11: ...8 19 20 21 22 23 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 KS4 KS3 KS2 KS1 C3 C2 C1 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 PL2 PL1 13 13 R18 470 R15 470 R14 330 R13 R12 330 R10 470 R11 330 KS1 KS2 KS3 KS4 KS5 KI4 KI3 KI2 KI1 KRC 178RA E KRC 178RG E D1 13 15 KRC 280RG M KRC 178RYA E B30 1566 05 B30 1565 05 0 20 2 71 KRC 278RA E UNIT No MODEL NAME 50 49 48 47 46 45 44 43 42 41 40 39 38 37 3...

Page 12: ...7 39 9 35 112 113 7 6 26 25 HD1 56 100 106x2 37 36 38 M1 20 5 1 23 22 105x2 113 112 16 18 17 19 102 104 D40 1136 05 MECHA KRC 13R 178R 23R 278R 280R E E E E M 1 2 3 A B EXPLODED VIEW MECHANISM 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: ... only KRC 280R only KRC 280R only 737 A A Refer to the following page ME1 A 1 F1 244 216 DC1 242 207 201 262 726 767 261 265 243 221x2 X14 J 1 X14 X14 J 5 X14 J 4 KRC 23R KRC 278R KRC 280R only X14 778 X14 777 X14 776 X14 J 2 X14 L 1 729 703 1 2 3 C D KRC 13R 178R 23R 278R 280R 16 EXPLODED VIEW UNIT 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...

Page 14: ...3 X13 274 X13 ED1 X13 271 775 208 206 235 256 259 PA1 241 227 252 253 251 257 258 255 232 232 232 254 231 UNIT 2 2 KRC 13R 178R 23R 278R 280R E E E E M 1 2 3 E F KRC 13R 178R 23R 278R 280R EXPLODED VIEW TDF 17 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 15: ...L ENG RUS POL E2E3E9 256 3E K25 1101 03 KNOB CLK AUTO 257 3E K25 1102 03 KNOB FM AM UP DOWN AUD B64 1536 00 INST MANUAL ENG RUS POL Z1 258 3E K25 1103 03 KNOB 1 2 3 4 5 6 ATT B64 1537 00 INST MANUAL CZE HUN CRO E2E3E9 259 3E K25 1108 03 KNOB VOL B64 1537 00 INST MANUAL CZE HUN CRO Z1 B64 1588 00 INST MANUAL ENG CHI M3 261 1C N99 1610 15 SCREW SET 1 SCREW M3 B64 1590 00 INST MANUAL ARABIC M3 262 1C...

Page 16: ...470 J 1 8W C401 402 C90 2606 05 ELECTRO 0 47UF 50WV E5E6E7 R17 18 RK73EB2B130J CHIP R 13 J 1 8W C401 402 C90 2606 05 ELECTRO 0 47UF 50WV E8E9Z1 C401 402 C90 2606 05 ELECTRO 0 47UF 50WV M3 R21 RK73FB2A4R7J CHIP R 4 7 J 1 10W C450 451 C90 2597 05 ELECTRO 10UF 16WV D17 MA3062 M ZENER DIODE C452 CK73FB1H103K CHIP C 0 010UF K IC1 LC75883E MOS IC C500 C90 2592 05 ELECTRO 10UF 6 3WV Q1 DTA114EK DIGITAL T...

Page 17: ... R67 RD14BB2C102J RD 1 0K J 1 6W R322 RK73EB2B222J CHIP R 2 2K J 1 8W R102 RK73GB1J473J CHIP R 47K J 1 16W R323 RK73EB2B100J CHIP R 10 J 1 8W R103 RK73GB1J473J CHIP R 47K J 1 16W EE1E2 R103 RK73GB1J473J CHIP R 47K J 1 16W E3E4 R350 RD14BB2C472J RD 4 7K J 1 6W R351 RD14DB2H102J SMALL RD 1 0K J 1 2W R104 RK73GB1J473J CHIP R 47K J 1 16W E5E6E7 R352 RK73FB2A223J CHIP R 22K J 1 10W R104 RK73GB1J473J CH...

Page 18: ...124EK DIGITAL TRANSISTOR D50 S2V20 A DIODE Q55 UN2112 DIGITAL TRANSISTOR D51 MA4068 N M ZENER DIODE D52 MA4051 N M ZENER DIODE Q56 2SB1565 E F TRANSISTOR D53 AM01Z DIODE Q56 2SB1655 E F TRANSISTOR D53 ERA15 01 DIODE Q57 2SC2412K TRANSISTOR Q57 2SD601A TRANSISTOR D54 MA4056 N M ZENER DIODE Q58 DTC144EK DIGITAL TRANSISTOR D55 MA4091 N L ZENER DIODE D56 MA4110 L ZENER DIODE Q58 UN2213 DIGITAL TRANSIS...

Page 19: ...0 2A D10 4201 08 ARM ASSY R 12 3A A11 0930 08 SUB CHASSIS CALKING ASSY 14 3A J26 4018 08 PRINTED WIRING BOARD ASSY 16 1B G01 2826 08 TORSION COIL SPRING 17 1A D10 4094 08 SLIDER 18 1B D10 4095 08 SLIDER 19 1A D10 4096 08 ARM 20 1A J19 4736 08 HOLDER ASSY 22 2A G01 2827 08 TENSION COIL SPRING 23 2A D10 4097 08 LEVER 25 2B D10 4098 08 SLIDER 26 2B G09 2019 08 SPRING 31 3A D01 0608 08 FLYWHEEL ASSY 3...

Page 20: ...3R 278R 280R 23 PARTS DESCRIPTIONS 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 21: ...angkok 10320 Thailand KENWOOD ELECTRONICS SINGAPORE PTE LTD 1 Genting Lane 07 00 Kenwood Building Singapore 349544 KENWOOD ELECTRONICS MALAYSIA SDN BHD 4 01 Level 4 Wisma Academy Lot 4A Jalan 19 1 46300 Petaling Jaya Selangor Darul Ehsan Malaysia KRC 13R E KRC 178R E KRC 23R E KRC 278R E KRC 280R M TDF TDF Tuner Type CR2 CR2 Frequency Range 87 5MHz 108 0MHz 87 5MHz 108 0MHz Frequency Step 50KHz 50...

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