Kenwood-KRFA4020-avr-sm 电路图 维修手册.pdf

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1、Please check the tuner PCB number before change C42,43 and X1 with new one . DIMMERP.CALLP.CALL A SPEAKERS BMUTEBASS BOOST TAPE2/ MONITOR SOURCE DIRECTBALANCESOUND MULTI CONTROLINPUT SELECTOR VOLUME CONTROL DOWNUP AV SURROUND RECEIVER PHONES BANDAUTOMEMORY STANDBY ON / STANDBY POWER -ONOFF? TRAIT RE

2、C OUTPLAY IN AUXMD / TAPE1 TAPE2/ MONITOR PLAY INREC OUT PLAY INPLAY IN PHONO L R FM 75 GND AM SPEAKERS +-+ R +-+ L L R B A SUBWOOFER PRE OUT SYSTEM CONTROL SL16 (XS 8) AC 220 - 240V AC 110 - 120V AC 220 - 240V AC 110 - 120V 50 s FM 50kHz AM 9kHz DE-EMPHASIS CHANNEL SPACE 75 s FM 100kHz AM 10kHz SWI

3、TCHED TOTAL 150W MAX AC 110 -120V/220 -240V 50/60HZ AC outlet (E03-0149-05) Lock terminal board (E70-0080-05) Lock terminal board (E70-0068-05) Phono jack (E63-0068-15) Phono jack (E63-1016-05) Slide switch (S62-0034-05) Miniature phone jack (E11-0347-05) Knob (K29-7365-12) Knob (K29-7365-12) Knob (

4、K29-7307-14) Front glass (B10-3475-02) Power cord bushing (J42-0083-05) Knob (K29-7310-03) Knob (K27-2185-04) Foot (J02-1167-03) KENWOOD badge (B43-0302-04) Indicator (B12-0334-14) Phone jack (3P) (E11-0295-05) Metallic cabinet (A01-3533-01) Phono jack (E63-0173-05) Slide switch (S62-0001-05) AC pow

5、er cord (E30-2592-15) Slide switch (S62-0034-05) Panel (A60-1585-01) Knob (K29-7306-14) AUDIO VIDEO SURROUND RECEIVER AR-304/KRF-A4020/ A4020E/A4020W SERVICE MANUAL 1999-1/B51-5501-00 (K/K) 3390 Illustration is KRF-A4020 Mtype. RadioFans.CN 收音机爱 好者资料库 DIMMERBASS BOOST TUNERCD 123 4560 789+10 TAPE2/

6、MONITOR TA/NEWSPTYDISPLAYAUX MULTI CONTROL MD/TAPE1 REMOTE CONTROL UNIT RC-R0708 PHONO 67 2 TUNING DISC SKIP % VOL. DOWN VOL. UP MEMORY S.DIRECT SOUNDBALANCE fi 1P.CALL4 BANDAUTOA/B +100 POWER fi fi MUTE DIMMERBASS BOOST TUNERCD 123 4560 789+10 TAPE2/ MONITOR TA/NEWSPTYDISPLAYAUX MULTI CONTROL MD/TA

7、PE1 REMOTE CONTROL UNIT RC-R0709 PHONO 67 2 TUNING DISC SKIP % VOL. DOWN VOL. UP MEMORYS.DIRECT SOUNDBALANCE fi 1P.CALL4 BANDAUTOA/B +100 POWER fi fi MUTE FM (T90-0836-05) indoor antenna AC plug adaptor (1) (E03-0115-05) (1) Loop antenna stand (1) AM loop antenna (1) (T90-0833-05) (J19-3645-05) Remo

8、te control unit (1) Remote control unit (1) (A70-1267-05) : RC-R0708.ETQE1 (A70-1266-05) : RC-R0709.KPMX Battery cover (A09-1123-08) Battery cover (A09-1123-08) Batteries (R06/AA) (2) *Use to adapt the plug on the power cord to the shape of the wall outlet. (Accessory only for regions where use is n

9、ecessary.) Resetting the Microcomputer If the microcomputer may malfunction (unit cannot be operated, or shows an erroneous display) if the power cord is unplugged while the power is ON, or due to some other external factor. If this happens, execute the following procedure to reset the micro- comput

10、er and return the unit to its normal operating condition. Unplug the power cord from the wall outlet, then plug it back in while holding down the POWER key. Please note that resetting the microcomputer will clear the contents of the memory and returns the unit to the state it was in when it left the

11、 factory. With the power cord plugged in, turn the POWER key OFF. Then, while holding down the ON/STANDBY key, press POWER. For U.S.A. and Canada For other countries AR-304/KRF-A4020 2 CONTENTS / ACCESSORIES / CAUTIONS CONTENTS/ACCESSORIES/CAUTIONS.2 CIRCUIT DESCRIPTION.3 ADJUSTMENT. 6 WIRING DIAGRA

12、M.7 PC BOARD .8 SCHEMATIC DIAGRAM .11 EXPLODED VIEW .21 PARTS LIST.22 SPECIFICATIONS .28 Contents Accessories Cautions RadioFans.CN 收音机爱 好者资料库 AR-304/KRF-A4020 3 CIRCUIT DESCRIPTION 1. BACK UP DATA AND INITIAL STATE 1-1 BACK UP (1) AMP POWER.STANDBY INPUT SELECTOR.TUNER BALANCE .CENTER SPEAKER A REL

13、AY.ON SPEAKER B RELAY.OFF VOLUME LEVEL.-66dB BASS LEVEL .0dB TREBLE LEVEL.0dB INPUT LEVEL .0dB BASS BOOST.OFF SOURCE DIRECT .OFF TAPE2/MONITOR.OFF SL16/XS8.SL16 (2) TUNER BAND .FM PRESET CHANNEL.- FREQUENCY.LOWER LIMIT VALUE K1 .FM:87.50MHz/AM:530kHz E1/E3.FM:87.50MHz/AM:531kHz Q1.FM:65.00MHz/AM:531

14、kHz AUTO/MANUAL .AUTO DISPLAY MODE .FREQUENCY E ON THRUST RECEIVING .OFF MODE T1 VOLUME.OFF(-66dB) 1-2 INITIAL SETTING The initial setting is performed when the AC power cord is plugged into the AC power wall out let while pressing the power (STANDBY) key. 3. TEST MODE 3-1 SETTING Turn the power ON

15、while pressing the BAND key. 3-2 CANCELLATION Unplug the AC power cord from an AC power wall outlet. 3-3 STARTING ACTIVE CONTENTS 1 The power on state is entered when the power is tuned on while pressing the BAND key. All functions are initialized and activated in the all lighting mode. 2 All lighti

16、ng mode is canceled when any main units keys are pressed. The normal display obtained when the selector is set to TUNER then appears. 3 E2PROM check(E,T,Q,type only). Check the reading data and the writing data of the E2PROM after setting the test mode. Display shows blank if the reading data and wr

17、iting data are the same. Display shows ”LW” if the different data will be written to E2PROM. 3-4 ACTIVE CONTENTS 1 The mute control is not activated when the mode is switched. 2 The test mode will be terminated by plugging it off the power source or by initializing it when all the settings will be i

18、nitialized. 3 During the test mode, it can be operated in a special manner that is different from an ordinary operation by using the keys on the remote control or the main body ,specifically as shown in the following table (3-5 CONTENTS). 4 Channel space will be no changed in the test mode. 3-5 CONT

19、ENTS 3-5-1 TUNER FUNCTION WITH THE SELECTOR ON TUNER (E/T/Q TYPE ONLY) DESTINA TION TUNER TYPE BAND RECEIVING FREQUENCY RANGE CHANNEL SPACE IF PLL REFERENCE FREQUENCY DSW3 (D507) DSW2 (D505) DSW1 (D504) DSWO (D510) K,PK1(1700) FM AM 87.5MHz108.0MHz 530kHz1700kHz 100kHz 10kHz +10.7MHz +450kHz 25kHz 1

20、0kHz 0000 M.XE1 FM AM 87.5MHz108.0MHz 531kHz1602kHz 50kHz 9kHz +10.7MHz +450kHz 25kHz 9kHz 0011 MK2(1600) FM AM 87.5MHz108.0MHz 530kHz1610kHz 100kHz 10kHz +10.7MHz +450kHz 25kHz 10kHz 0001 E,T E3 RDS FM AM 87.5MHz108.0MHz 531kHz1602kHz 50kHz 9kHz +10.7MHz +450kHz 25kHz 9kHz 0101 Q Q1 RDS FML FMH AM

21、65.0MHz74.0MHz 87.5MHz108MHz 531kHz1602kHz 10kHz 50kHz 9kHz +10.7MHz +10.7MHz 450kHz 5kHz 5kHz 9kHz 1011 DSW0DSW3(DIODE SW) * O: NONE DIODE,1:ADD DIODE 2. DESTINATION LIST OF TUNER OPERATION KEYFUNCTIONFL DISPLAYREMARKS (EX.) PTY S LEVEL(1)(SLEVEL),(RF ATT)OFF (1) RF ATT(2)(SLEVEL),(RF ATT)ON (2) (3

22、) (3)(NORMAL),(RF)ATT OFF CYCLE DISPLAYP.CALL UP BASS BOOSTP.CALL DOWNP.CALL FREQUENCY TA/NEWSPI CODEPI 0000PI CODE ON/OFF Bass and treble are selected when the sound key is pressed. 2 Tuned light 3-5-2 AMP FUNCTION WITH THE SELECTOR ON SOMETHING OTHER THAN TUNER 1 One touch max,min setting for Audi

23、o level. SOUND KEY KEYMASTER VR. BASSTREBLE BAND-89dB-10dB-10dB AUTO0dB+10dB+10dB MEMORY-10dB0dB0dB XS8SL16 XS8/SL16TUNED LIGHTSTUNED LIGHTS SWITCHOFFON RadioFans.CN 收音机爱 好者资料库 AR-304/KRF-A4020 4 CIRCUIT DESCRIPTION 4. Microprocessor CXP82840-163Q, CXP82832-162Q (X09, IC51) 4-1 Microprocessor periph

24、ery block diagram diagram FL DISPLAY ED51 10GRID 16SEGMENT X8 X3 X2 X2 X2 X2 X09, S516 SERIAL COMMUNICATION DATA BUSY VOLUME ENCODER X09, S518 MULTI ENCODER X09, S517 SELECTOR ENCODER X2 X3 8.0MHz CE RESET X3 X2 TUNER MUTE AUDIO MUTE X09, IC52 EEPROM -10dB ATT SD STEREO KS0KS7KR0KR2 X1 10-BT-216GK L

25、ED (STANDBY) POWER RELAY SPEAKER A RELAY SPEAKER B RELAY X09, IC51 X09, IC3 SELECTOR IC TC9164AN REMOCON CXP82840-163Q (E/T/Q TYPE ONLY) CXP82832-162Q (OTHERS) Receiver X09, IC54 RDS IC X05, IC2 TUNER SAA6579/R (PHILIPS) E/T/Q TYPE ONLY E/T/Q TYPE ONLY LC72131 X09, IC2 VOLUME IC M62492FP X24C02 (XIC

26、OR) KEY MATRIX KR0(12)KR1(13)KR2(14) KS0(81)BASS BOOSTS.DIRECTBAND KS1(80)SPEAKER B*DIMMER/PTY*P.CALL UP/DISPLAY KS2(79)SPEAKER APOWER*P.CALL DOWN/TA NEWS KS3(78) - - - KS4(77) - -DSW3(507) KS5(76)DSW2(D505)DSW1(D504)DSW0(D510) KS6(75) TAPE2/MONITORSOUNDAUTO KS7(74)MUTEBALANCEMEMORY PTY,DISPLAY and

27、TA/NEWS keys are only RDS version(E/T/Q). AR-304/KRF-A4020 5 CIRCUIT DESCRIPTION Pin No.Pin name I/ODescriptionActive 1,2G9,G10OFL grid control (9,10). 3NC-Unused. 4RDS,CKIRDS IC clock input control. (E/T/Q type only) 5RDS,DTIRDS IC data input control. (E/T/Q type only) 6NCIUnused. 7VOL.ENC.AIVolume

28、 encoder A (CW) signal. 8REMOCONIRemote control signal input. 9VOL.ENC.BIVolume encoder B (CCW) signal. 10,11NC-Unused. 1214KR0KR2IKey return (02). 15PROTECTIProtection detection signal input.H: Protection ON 16S.DATAI/OSerial communication data. 17S.BUSYI/OSerial communication busy. 18E2.DATAI/OE2

29、PROM data. 19E2.CLKOE2 PROM clock. 20SEL.ENC.AISelector encoder A(CW) input. 21SEL.ENC.BISelector encoder B(CCW) input. 22MULTI.ENC.AIMulti control encoder A(CW). 23MULTI.ENC.BIMulti control encoder B(CCW). 248/16ISerial communication 8bit/16bit changeover. 2527NC-Unused. 28VDD-Analog power supply (

30、+5V). 29S.LEVELISignal level A/D input. (E/T/Q type only) 3032NC-Unused. 33PLL.DOIPLL IC DO signal input. (E/T/Q type only) 34PLL.STITUNER stereo signal input.L: STEREO 35PLL.SDITUNER SD signal input.L: TUNED 36RCV.CEIReceiver chip enable signal input.L: ENABLE 37AVSS-Analog ground. 38RESETIu-Com re

31、set. 39EXTALIMain clock(8MHZ). 40XTAL-Main clock(8MHZ). 41VSS-u-Com ground. 42TX-Unused. 43TEXIGround. 44VDD-Analog power supply (+5V). 45VFDP-FL power supply(-33V). 46SEL.STBOTC9164AF strove.H: LATCH 47SEL/PLL.DTOSelector/PLL IC data signal output. 48SEL/PLL.CKOSelector/PLL IC clock signal output.

32、49PLL.CEOPLL IC CE signal output. 50T.MUTEOTuner mute control.L: MUTE ON 51A.MUTEOAudio mute control.L: MUTE ON 52NC-Unused. 5310dB.ATTOVolume 10dB attenuator control.L: ATT ON 54VOL.DTOVolume IC(M62492FP) data control. 55VOL.CKOVolume IC(M62492FP) clock control. 56VOL.STOVolume IC(M62492FP) strove

33、control. 5759NC-Unused. 60RELAY.AOSP. relay A control.H: RELAY ON 61RELAY.BOSP. relay B control.H: RELAY ON 62,63NC-Unused. 64POWER.RLYOPower relay control.H: RELAY ON 65STANDBY.LEDOSTANDBY LED control.H: LED ON 6671NC-Unused. 72LIMITEROOutput power control at SP. (A+B). K/M/X only. 73S.W MUTE-Unuse

34、d. 74,75KS6/KS7OKey scan 6,7. 7681P1/KS5P6/KS0OFL segment 16/key scan 50. 8288P7P13OFL segment 713. 89VDDOu-Com +5V power supply. 9092P14P16OFL segment 1416. 93100G1G8OFL GRID 18. 4-2 Pin descriptions AR-304/KRF-A4020 6 ADJUSTMENT No.ITEMINPUT SETTINGS OUTPUT SETTINGS RECEIVER SETTINGS ALIGNMENT POI

35、NTS ALIGN FORFIG. 1 DISTORTION (STEREO) (C) 98.0MHz 1kHz, 68.25kHz dev. Selector : L or R Pilot : 6.75kHz dev. 70dBf (ANT. input) (B)98.0MHz IFT (TUNER UNIT: A1) Minimum distortion (L or R) (a) 2TUNING LEVEL (A) 98.0MHz MONO 1kHz, 75kHz dev. 25dBf (ANT. input) (B) MONO 98.0MHz VR1 (TUNER UNIT) Adjus

36、t VR1 and stop at the point where ED51 (TUNED) goes on. (a) 1DISCRIMINATOR (A) 98.0MHz 1kHz, 40kHz dev. Connect a DC voltmeter between CN2 1 and CN2 2 (TUNER UNIT) MONO 98.0MHz L4 (TUNER UNIT) 0V(a) 3 DISTORTION (STEREO) 98.0MHz (C) 1kHz, 40kHz dev. Selector : L or R Pilot : 6kHz dev. 70dBf (ANT. in

37、put) (B) AUTO 98.0MHz IFT (TUNER UNIT : A1) Minimum distortion (L or R) (a) 2 DISTORTION (MONO) (A) 98.0MHz 1kHz, 40kHz dev. MONO 70dBf (ANT. input) (B) MONO 98.0MHz L5 (TUNER UNIT) Minimum distortion(a) 4 1IDLE CURRENTVolume: 011 mV VR1 (L) VR2 (R) Connect a DC Volumeter across CN11 (L) CN12 (R) TU

38、NING LEVEL (A) 98.0MHz MONO 1kHz, 40kHz dev. 25dBf (ANT. input) (B) MONO 98.0MHz VR1 (TUNER UNIT) Adjust VR1 and stop at the point where ED51 (TUNED) goes on. (a) (b) FM SECTION : EXCEPT E,T,Q type SELECTOR : FM FM SECTION : E,T,Q type only SELECTOR : FM Adjust NO.1 and NO.2 repeat. 70dBf (ANT. inpu

39、t) AUDIO SECTION REC OUTPLAY IN AUXMD / TAPE1 TAPE2/ MONITOR PLAY INREC OUT PLAY INPLAY IN PHONO L R GND AM SPEAKERS +-+ R +-+ L L R B A SUBWOOFER PRE OUT AC 220 - 240V AC 110 - 120V AC 220 - 240V AC 110 - 120V SWITCHED TOTAL 150W MAX (A) (B) (C) (D) AM SG FM-MPX-SG FM-MPX-SGPOLAR SG AC voltmeter Os

40、cilloscope Distortion meter Dummy antenna (b) (a) Dc voltmeter CN11, 12 SYSTEM CONNECTIONS AR-304/KRF-A4020 7 WIRING DIAGRAM 15 1 15 1 AM: 9kHz FM: 50kHz 50uS AM: 10kHz FM: 100kHz 75uS 2 1 2 1 XS8 SL16 SBUSY SDATA 3131 1 1 31 (K,P) (M) (Q) (X) (T,E) : AC120V 60Hz : AC110-120V/220-240V 50/60Hz : AC22

41、0V 50Hz : AC240V 50Hz : AC230V 50Hz 2 1 F2 F1 F3 120V 110- 240V 220- 1515 11 F4 F5 1 66 1 1 5 2 1 2 1 1 1 4 4 31 CN1CN7 GND CH SPACE DE-EMPHASIS S1 J1AM ANT FM75 S1 POWER SW WH1CN2 Rch 4 + 2Lch + 3Rch + 1Lch + J5 FRONT SPEAKERS A SPEAKERS B FRONT S4 SYSTEM CONTROL SW J6 SYSTEM CONTROL PRE OUT J4 SUB

42、 WOOFER Lch 5 Rch 6 Lch 3 Rch 4 J3 Lch 1 Rch 2 Lch 1 Rch 2 PHONO J1 MD/TAPE PLAY IN TAPE2/MONITOR REC OUT PLAY IN Lch 3 Rch 6 Lch 5 Rch 4 J2 REC OUT Rch 2 Lch 1 MD/TAPE AUX CD CN8CN9 WH51 CN10 CN1 J8 AC OUTLET USED (M)TYPE (E,E2)TYPE USED T1 S2S3 WH4 CN6 WH2 WH3 DESTINATION U.K. EUROPE COUNTRY T E 2

43、-71 UNIT No. ABB. UNIT No. KRF-A4020 (X05-5052-71) COUNTRY RUSSIAQ ABB. 3-81 DESTINATION KRF-A4020W (X05-4983-81) EUROPEE12-71 ABB.COUNTRY DESTINATION KRF-A4020E (X05-4982-71) COUNTRY UNIT No. ABB. GENERAL MARKET EUROPE U.K. AUSTRALIA T E 2-71 M X 0-21 0-71 CANADAP KRF-A4020 (X05-498X-XX) DESTINATIO

44、N UNIT No. DESTINATION AR-304 (X05-5050-10) COUNTRY U.S.A. UNIT No. ABB. K 0-10 KRF-A4020W (X09-6143-81) DESTINATION COUNTRY RUSSIA ABB. Q3-81 UNIT No. KRF-A4020 (X09-614X-XX) GENERAL MARKET DESTINATION KRF-A4020E (X09-6142-70) DESTINATION EUROPE COUNTRY EUROPE AUSTRALIA U.K. COUNTRY 2-70E UNIT No.

45、ABB. E12-70 M T X 0-21 0-51 0-71 UNIT No. ABB. AR-304 (X09-6310-10) DESTINATION COUNTRY U.S.A. CANADA ABB. K P 0-10 UNIT No. KRF-4020W (X09-6143-81) DESTINATION COUNTRY RUSSIA3-81 UNIT No. Q ABB. COUNTRY DESTINATION KRF-4020E (X09-6142-70) EUROPE U.K. EUROPE AUSTRALIA GENERAL MARKET KRF-4020 (X09-61

46、4X-XX) DESTINATION COUNTRY CANADA DESTINATION COUNTRY U.S.A. X0-71 UNIT No. 2-70E1 ABB. 2-70 0-51 E T 0-21 UNIT No. M ABB. UNIT No. 0-10 K P ABB. AR-304 (X09-6310-10) WH52 TAPE2/MONITOR E2E3 HEADPHONE ABB.COUNTRY 2-71 0-51 EUROPE U.K. E T KRF-A4020 (X09-631X-XX) UNIT No. DESTINATION J7 UNIT No. KRF-4020 (X09-631X-XX) EUROPE U.K.T E DESTINATION COUNTRYABB. 0-51 2-71 TUNER UNIT (X05-XXXX-XX) USED (M)TYPE (X09- ) (F/8) USED EXCEPT (K,P)TYPE (X09-6XXX-XX) (A/8) (X09- ) (B/8) DISPLAY UNIT AU