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KRC-15R,179R,25R,279R,281R

2

CONTENTS / BLOCK DIAGRAM

CONTENTS / BLOCK DIAGRAM ...............................2
COMPONENT DESCRIPTION...................................3
MICROCOMPUTER'S TERMINAL DESCRIPTION ...4
TEST MODE...............................................................6
ADJUSTMENT............................................................7
PARTS DESCRIPTIONS............................................8

PC BOARD .................................................................9
SCHEMATIC DIAGRAM...........................................13
EXPLODED VIEW ....................................................18
PARTS LIST .............................................................21
SPECIFICATIONS ......................................Back cover

CONTENTS

BLOCK DIAGRAM

IC1

KEY

P

AN 5V

MUTE

B.U. DET

.

B.U.

ACC

P-CONT

.

MUTE

PRE

POWER IC

EQ. AMP

.

CH ISO 

AMP

NC/MPX/

E-VOL.

CD/MD

CHANGER

FRONT

 Lch

FRONT

 Rch

REAR Lch

REAR Rch

J2

LCD DRIVER

LCD

ME1

MAIN

CASSETTE MECHA.

IC5

1 Lch

2 Rch

PRE OUT

IC2

IC4

IC3

SP

 OUT

REAR

J4

P

AN IN SW

ACC DET

.

P-CONT

.

J2

J5

IC1

FRONT

-END

J1

FM+B

Q201

AM+B

Q203

AM BPF

FM BPF

C154,R206

C153,R207

Q320

Q450,451

Q49

Q50

Q350,351,370

Q53

SW 5V

Q54-57

8V

Q58-61

ILLUMI.

B.U. 5V

Q51,52

SYSTEM u-COM

S1

S2

S3

RST

 SW

Q301

D1-15

PL1,2

ANT

.

TEL

 MUTE

DECODER

RDS

IC7

Q501,502

MP

 SW

40W

RST

 IC

RST

IC6

ED1

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

P

.ON

ACC DET

B.U. DET

SCL

MUTE

SDA

P

 CON

PANEL

RESET

L CLK

L D

ATA S

L D

ATA L

FWD/REV

MOTOR

CH CON

DATA

 H

DATA

 C

REQ H

REQ C

CH CLK

Rch

COM

Lch

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

B.U.5V

8V

B.U.

CH RST

S MUTE

8

5

10

B.U.5V

AM+B

VDD 5V

PACK IN

L RES

PHONE

CH MUTE

BEEP

SVR

AMP

. STBY

SVR

AC GND (BEEP)

Lch

Lch

Rch

Lch

1200mV

T

APE :1681mV

CD/MD-CH :3529mV

AM :772mV

FM :1339mV

8V

RF GND

OSC GND

IF2 +B

AUDIO OUT

8V

S-METER

SD

PLL-SCL

PLL-SDA

M1

HD1

L/R

55.6mV

B.U.5V

SW5V

8V

B.U.5V

AM: 170mV

FM: 213mV

T

APE

P

ACK IN

(FF/REW)

AMP

. MUTE

FF/REW

B.U.5V

R QUAL

R CLK

R DA

T

A

SW5V

MP

 OUT

QUAL

AFC

NOISE

B.U.5V

ILLUMI.

L CE

(X13)

M

KRC-15R,179R,25R,279R,281R (E,M)

A1

TEL

 DET

D380

5V

R205

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 

Содержание KRC-15RG

Страница 1: ... M RDM LOUD DISC HIGH POWER 40Wx 40Wx 4 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 HIGH POWER 40Wx 40Wx 4 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 HIGH POWER 40Wx 40Wx 4 MENU FM AM FF REW PR OG VOL ADJ NAME SET TI PTY AUD 1 2 3 4 5 6 CLK ...

Страница 2: ...6 ED1 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 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 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 B U 5V 8V B U CH RST S MUTE 8 ...

Страница 3: ...k up current is detected or the changer mute works or system µ com 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 Q35...

Страница 4: ...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 B O AM power...

Страница 5: ...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 ...

Страница 6: ...entary 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 pressing the Track UP Track DOWN keys Sound coordination doesn t appear for the feed www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 ...

Страница 7: ... diese Einstellung 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 c...

Страница 8: ... 25R 279R 281R 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 ...

Страница 9: ... E E B E B E B E B E B B E E B E B B E E B 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 4 3320MHz W24 W64 W76 W78 R200 R202 W36 R55 W73 W69 W12 W99 R67 W58 W104 C4 R350 R370 W67 W57 W70 C209 L10 W66 W68 W4 W6 W72 W71 W7 W85 W80 W39 W42 W45 W48 W50 W101 W102 W2 W200 R51 R65 R351 R353 R66 X1 C50 C17 C18 C160 C1...

Страница 10: ...62 R501 R502 R500 R263 W11 W5 W9 W8 L10 W7 W18 W35 W25 W20 W31 W29 W22 W41 R107 W34 W21 TH TC W46 PCK PDA W4 R119 W6 R120 R202 B R200 C152 W33 W26 W38 W40 W49 W27 W23 W32 W30 C150 W37 L6 L4 W200 L5 1 C450 C451 E B E W14 W17 W15 W12 W3 C16 C15 C18 W42 W39 W48 W45 W13 C402 C401 C400 R L W10 W24 W36 C159 2 1 12 2 11 1 W82 W77 W88 W84 W104 R100 RES 4 19MHz X1 CCK TP W75 W74 5V W81 DG W64 W65 W59 W60 W...

Страница 11: ...4 STBY 6 VCC 8 GND 10 SVR 12 RRI 14 FLI 16 AC GND 18 GND 20 VCC 22 MUTE 24 GND 4 7K R14 0 22u50 C16 750 4 7K 0 22u50 C18 R16 4 7K 0 22u50 C15 R13 1u50 0 22u50 4 7K R15 C17 17 19 23 21 24 25 23 26 R154 C161 19 SCL 1u50 C152 41 0 1 C506 78 1K R160 L6 4 7uH 4 7uH L7 L10 0 01 C214 1 2 3 4 5 6 7 8 QUAL RDDA VREF MPX OSEL GND ARI FILOUT 16 15 14 13 12 11 10 9 RDCK T57 OSCO OSCI VCC EXTRES TM TSEL R501 2...

Страница 12: ...S18 S17 S16 S15 S14 S13 S7 S8 S6 S9 S5 S11 S10 S12 S4 COM3 COM2 COM1 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 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 47 46 48 50 49 52 51 54 53 55 C1 C2 C3 4 12 10 11 5 9 6 8 7 13 14 15 16 17 18 19 20 21 22 23 R17 KRC 279RYG E KRC 17...

Страница 13: ... 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 15R 179R 25R 279R 281R E M 1 2 3 A B 18 KRC 15R 179R 25R 279R 281R 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 ...

Страница 14: ...C 281R only KRC 281R only 737 K K Refer to the following page ME1 A1 F1 244 216 DC1 242 207 201 262 726 767 261 265 243 221x2 X14 J1 X14 X14 J5 X14 J4 KRC 25R KRC 279R KRC 281R only X14 778 X14 776 X14 777 X14 779 X14 J2 X14 L1 729 703 B B E D Cx2 Fx2 1 2 3 C D EXPLODED VIEW UNIT 19 KRC 15R 179R 25R 279R 281R 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...

Страница 15: ...3 273 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 15R 179R 25R 279R 281R E M 1 2 3 E F EXPLODED VIEW UNIT KRC 15R 179R 25R 279R 281R 20 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 ...

Страница 16: ...4 KNOB SRC B64 1855 00 INST MANUAL FRE GER DUT EE1E4 252 2E K24 3544 04 KNOB RELEASE 253 3F K24 3545 04 KNOB EJECT B64 1855 00 INST MANUAL FRE GER DUT E5E8E9 254 3F K24 3546 04 KNOB FF B64 1855 00 INST MANUAL FRE GER DUT Z1 255 3F K24 3547 04 KNOB REW B64 1856 00 INST MANUAL ITA SPA POR EE1E4 B64 1856 00 INST MANUAL ITA SPA POR E5E8E9 256 3E K25 1101 03 KNOB CLK AUTO B64 1856 00 INST MANUAL ITA SP...

Страница 17: ...B331J CHIP R 330 J 1 8W C380 CK73GB1H103K CHIP C 0 010UF K R14 RK73EB2B471J CHIP R 470 J 1 8W C400 CE04CW0J220M ELECTRO 22UF 6 3WV EE1E2 R15 RK73EB2B361J CHIP R 360 J 1 8W C400 CE04CW0J220M ELECTRO 22UF 6 3WV E3E8E9 R17 18 RK73EB2B130J CHIP R 13 J 1 8W C400 CE04CW0J220M ELECTRO 22UF 6 3WV M1 R21 RK73GB1J4R7J CHIP R 4 7 J 1 16W C401 402 C90 2606 05 ELECTRO 0 47UF 50WV EE1E2 C401 402 C90 2606 05 ELE...

Страница 18: ...C473J RD 47K J 1 6W R59 RK73GB1J101J CHIP R 100 J 1 16W R260 RD14DB2H102J SMALL RD 1 0K J 1 2W R60 RK73GB1J473J CHIP R 47K J 1 16W R261 RD14BB2C103J RD 10K J 1 6W R61 RK73GB1J562J CHIP R 5 6K J 1 16W R262 263 RD14BB2C473J RD 47K J 1 6W R62 RK73GB1J103J CHIP R 10K J 1 16W R63 64 RK73GB1J102J CHIP R 1 0K J 1 16W R301 302 RK73EB2B471J CHIP R 470 J 1 8W R303 306 RK73EB2B102J CHIP R 1 0K J 1 8W R65 66 ...

Страница 19: ...5 MA4068 N M ZENER DIODE M1 R500 502 RD14BB2C222J RD 2 2K J 1 6W D408 409 MA4062 L ZENER DIODE EE1E2 R503 RK73EB2B102J CHIP R 1 0K J 1 8W D408 409 MA4062 L ZENER DIODE E3E8E9 R504 RK73GB1J472J CHIP R 4 7K J 1 16W D408 409 MA4062 L ZENER DIODE M1 W153 154 R92 2053 05 CHIP R 0 J 1 8W D410 HZS7A3L ZENER DIODE EE1E2 W156 170 R92 2053 05 CHIP R 0 J 1 8W D410 HZS7A3L ZENER DIODE E3E8E9 W173 174 R92 2053...

Страница 20: ...8 2B G01 2831 08 TENSION COIL SPRING Q301 UN2113 DIGITAL TRANSISTOR 99 3B E39 0181 08 WIRE HARNESS Q320 2SA1037K TRANSISTOR 100 1B J11 0618 08 CLAMPER Q350 2SB1277 Q R TRANSISTOR 101 3B N09 4328 08 SCREW Q351 2SA1037K TRANSISTOR 102 3A N09 4326 08 SCREW Q352 DTA124EK DIGITAL TRANSISTOR 103 3A N09 4191 08 SCREW Q352 UN2112 DIGITAL TRANSISTOR 104 1B N09 4192 08 SCREW Q353 DTC114YK DIGITAL TRANSISTOR...

Страница 21: ... 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 15R E KRC 179R E KRC 25R E KRC 279R E KRC 281R M TDF TDF Tuner Type CR2 CR2 Frequency Range 87 5MHz 108 0MHz 87 5MHz 108 0MHz Frequency Step 50KHz 50KHz Usable Sensitivity 0 7µV 75Ω S N 26dB Usable Sensitivit...

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