Kenwood-VR307-avr-sm 电路图 维修手册.pdf

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1、AUDIO VIDEO SURROUND RECEIVER KRF-V7020D/V8020D VR-307/309/357 SERVICE MANUAL 1999-1/B51-5499-00 (K/K) 1895 Illustration is KRF-V7020D(Y). - Font glass (B10-3458-02) Knob (K27-2293-04) Knob (K29-7370-02) Knob (K29-7370-02) Phone jack (E11-0127-05) Foot (J02-1407-03) KENWOOD badge (B43-0302-04) Knob

2、(K29-7326-04) Knob (K29-7323-03) Knob (K29-7325-04) AC power cord (E30-2605-05) Phono jack (6Px2) (E63-0047-15) Phono jack (E63-0164-05) Miniature phone jack (E11-0293-05) Phono jack (E63-0094-05) Phono jack (E63-0093-05) Phono jack (E63-1080-05) Phono jack (4Px2) (E63-0046-15) Power cord bushing (J

3、42-0083-05) AC outlet (E03-0148-05) Optical receiving module (W02-1181-05) Lock terminal board (E70-0052-05) Screw terminal board (E70-0100-05) Lock terminal board (E70-0047-05) Metallic cabinet (A01-3685-01) Slide switch (S62-0034-04) Slide switch (S62-0001-04) RadioFans.CN 收音机爱 好者资料库 Remote Contro

4、ller ModelDestinationsParts numberModel nameBattery Cover KRF-V7020DX7,C7,Y7,V7,M7 A70-1268-05RC-R0712A09-1123-08 KRF-V8020DX8A70-1275-05RC-R0508A09-0366-08 KRF-V8020DC8,I8,Y8,M8A70-1277-05RC-R0608A09-0366-08 VR-307K6,P6A70-1268-05RC-R0712A09-1123-08 VR-309K8,P8A70-1277-05RC-R0608A09-0366-08 VR-357K

5、7,P7A70-1277-05RC-R0608A09-0366-08 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

6、 reset the micro- computer 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

7、 was in when it left the 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 FM (T90-0836-05) RC-R0508/R0608RC-R0712 Battery cover (A09-0366-08)Battery cover (A09-1123-08) (E03-0115-05) i

8、ndoor antenna (1) (T90-0833-05) Loop antenna stand (1) Batteries (R03/AAA) (4) *AC plug adaptor (1) *Use to adapt the plug on the power cord to the shape of the wall outlet. (Accessory only for regions where use is necessary.) AM loop antenna (1) Remote control unit (1)Remote control unit (1) KRF-V7

9、020D/V8020D/VR-307/309/357 2 CONTENTS / ACCESSORIES / CAUTIONS CONTENTS / ACCESSORIES / CAUTIONS.2 DISASSEMBLY FOR REPAIR.3 CONTROLS .4 BLOCK DIAGRAM .6 CIRCUIT DESCRIPTION.7 ADJUSTMENT. 14 WIRING DIAGRAM.15 PC BOARD .16 SCHEMATIC DIAGRAM .21 EXPLODED VIEW .35 PARTS LIST.36 SPECIFICATIONS .45 Conten

10、ts Accessories Cautions Model name vs remote controller RadioFans.CN 收音机爱 好者资料库 KRF-V7020D/V8020D/VR-307/309/357 3 DISASSEMBLY FOR REPAIR 1. Remove the 8 screws (1,2,3), remove the rear panel. 2. Connect the GND of the rear panel and the chassis, the GND of the mounting hardware and the chassis with

11、 2 alligators clip (4) 1 2 2 4 4 4 3 x2 x2 x2 x2 RadioFans.CN 收音机爱 好者资料库 KRF-V7020D/V8020D/VR-307/309/357 4 CONTROLS 8 FUNCTION SHIFT key Use in combination with the numeric keys to execute alternate commands. 9 Numeric keys Provide functions identical to those of the original remote control supplie

12、d with the component you are controlling. To access the functions printed above the keys, press within 3 seconds of pressing the FUNCTION SHIFT key. Function availability varies for each component. 0 SHIFT key Use in combination with the AUDIO and VIDEO keys to change the remote control mode without

13、 changing the input selector or in combination with the POWER key to turn on and off components programmed into the remote control. ! TV selector key Sets the remote control to operate a TV or cable box. This key does not change the input selector on the receiver. AUDIO selector key Selects the audi

14、o inputs and sets the re- mote control to operate the respective KENWOOD audio component. If you connect audio components from KENWOOD and other makers to the MD/ TAPE or CD jacks, you can set the remote control to operate these components by registering the appropriate setup code at the respective

15、input. # GUIDE key Use to activate the OSD menu functions of registered components. $ VOLUME key Use to adjust the receiver volume. % MUTE key Use to temporarily mute the sound. SOUND key Use to adjust the sound quality and ambi- ence effects. & LISTEN MODE key Use to select the listening mode. * SE

16、TUP key Use to select the surround sound settings. 1 POWER key Use to turn the receiver on and off. Use in combination with the input selector (AUDIO, VIDEO, or TV) keys and SHIFT key to turn various components on and off. 2 MACRO key Use in combination with the AUDIO, VIDEO, or TV keys to execute a

17、 series of commands automatically (MACRO PLAY). 3 VIDEO selector key Selects the video inputs and sets the remote control to operate the component regis- tered at the respective input. 4 Multi control keys Use to operate the selected component. 5 REC key Use to operate the selected component. 6 TUNI

18、NG/SKIP key Use during the setup procedure to specify various settings. Use to operate the tuner or selected component. 7 SUBWOOFER key Use in combination with the VOLUME +/ keys to adjust the volume of the subwoofer. There are some cases in which keys (or knobs) that have the same function on the r

19、eceiver and on the remote control have different names. In the instruc- tions of this manual, if the names of corresponding keys (or knobs) on the receiver and remote control are differ- ent, the name of the remote control key is indicated in parentheses. AUDIO SHIFTMACRO TVVIDEO GUIDEREC MUTE VOLUM

20、ETUNING/SKIP THEMEFAVMENU FUNCTION SHIFT SETUP INFOALT AUDTV/SAT/VID REPEATRANDOM+100 DISPLAY ENT+10 LISTEN MODESOUNDSUBWOOFER 231 564 897 0 1 2 3 7 8 9 4 5 6 0 ! # * & % $ 8 7 46 BAND P. CALLP. CALL POWER Remote control unit (RC-R0608 / R0508) A SPEAKERS BBASS BOOSTMONITOR SOURCE DIRECT INPUT MODE

21、LISTEN MODESOUNDSETUP MULTI CONTROLINPUT SELECTOR VOLUME CONTROL DTS DOLBY DIGITAL VIRTUAL SURROUND DOLBY DIGITAL VIRTUAL SURROUND DOWNUP STANDBY AV SURROUND RECEIVER ON / STANDBY PHONES - ON OFF POWER POWER STANDBY ON / STANDBY DIMMERP.CALLP.CALLBANDAUTOMEMORY FM AM kHz MHz3 STEREO B S.DIRECT ASP M

22、UTE DOWNMIX MONITOR PRO LOGIC TUNED MEMO. AUTO ST. AUTO SOUND S SW C RS R LS L LFE DIGITAL CLIP 283 46 759 )(%$#!0 &* 1 Display Speaker selection indicators Input channel indicators Output channel indicators AUTO SOUND indicator Band indicators AUTO indicator MEMO. indicator ST. indicator TUNED indi

23、cator 3 STEREO indicator STEREO indicator 1 POWER key (For U.S.A. and Canada) Use to turn the power ON/OFF. STANDBY indicator 1 ON/STANDBY () key (Except for U.S.A. and Canada) Use to switch the power ON/STANDBY when the POWER is turned ON. STANDBY indicator 2 POWER key (Except for U.S.A. and Canada

24、) Use to turn the main power ON/OFF. 3 Surround indicators DTS indicator Lights when the receiver is in the DTS mode. (For VR-309, KRF-V8020D) DOLBY DIGITAL indicator Lights when the receiver is in the Dolby Digital mode. VIRTUAL SURROUND indicator Lights when the receiver is in the Virtual Surround

25、 mode. 4 DIMMER key Use to adjust the brightness of the display. Use to select the REC MODE. 5 P.CALL keys Use to call up previously registered radio stations. 6 BAND key Use to select the broadcast band. 7 AUTO key Use to select the auto tuning mode. 8 MEMORY key Use to store radio stations in the

26、preset memory. 9 VOLUME CONTROL knob 0 PHONES jack Use for headphone listening. ! SPEAKERS A/B keys Use to turn the speakers ON/OFF. BASS BOOST key Use to select the maximum adjustment setting for the low frequency range. About the STANDBY indicator This unit has a STANDBY indicator. When the STANDB

27、Y indicator is lit, the unit consumes a small amount of power to preserve the memory. This is called STANDBY mode. This mode also lets you turn the power ON using the remote control. Frequency display, Input display, Preset channel display, Surround mode display Speaker indicator CLIP indicator PRO

28、LOGIC indicator DIGITAL indicator S.DIRECT indicator MONITOR indicatorDOWNMIX indicator # MONITOR key $ SOURCE DIRECT key % INPUT MODE key Use to switch between the digital and analog inputs. LISTEN MODE key Use to select the listening mode. & SOUND key Use to adjust the sound quality and amb ence e

29、ffects. * SETUP key Use to select the surround sound settings ( MULTI CONTROL knob Used to make a variety of settings. ) INPUT SELECTOR knob Use to select the input sources. For U.S.A. and Canada MUTE indicator For VR-307, VR-357 KRF-V7020D KRF-V7020D/V8020D/VR-307/309/357 5 CONTROLS Remote control

30、unit (RC-R0712) AUTO (7)key If tuner is selected as the input source, this key functions as the AUTO key. If CD or MD is selected as the input source, this key functions as the stop key. TUNING (1 ?) keys If tuner is selected as the input source, these keys function as tuning keys. If CD or MD is se

31、lected as the input source, these keys function as search keys. P.CALL (4 ?) keys If tuner is selected as the input source, these keys function as P.CALL keys. If CD or MD is selected as the input source, these keys function as skip keys. 3 LISTEN MODE key Use to select the listening mode. 4 MUTE ke

32、y Use to temporarily mute the sound. 5 SOUND key Use to adjust the sound quality and ambi- ence effects. 6 MULTI CONTROL key Used to make a variety of settings. 1 Numeric keys If CD or MD is selected as the input source, these keys function as numeric keys. If tuner is selected as the input source,

33、these keys are used to call up station presets. 2 Component operation keys Use these keys to operate other compo- nents with system control connections to the receiver. 2 key If tape is selected as the input source, this key functions as the play key for side B of the cassette (the side facing away

34、from the front of the deck). BAND (6) key If tuner is selected as the input source, this key functions as the band selector key. If CD is selected as the input source, this key functions as the play/pause key. If MD is selected as the input source, this key functions as the play key. DISC SKIP, A/B,

35、 +100 key If CD is selected as the input source, this key functions as the multi-CD player disc skip key. If TAPE is selected as the input source, this (A and B) of a double cassette deck. REMOTE CONTROL UNIT RC-R0712 POWER123 0456 +107 LISTEN MODES.DIRECT DISC SKIP A/B +100AUTOBAND TITLE SUB TITLE

36、MD/TAPETUNERCDPHONO DVD CONTVIDEO 1VIDEO 2VIDEO 3 OSD SET UP MONITOR SOUND MENU ENTER MUTE MULTI CONTROL VOL.UP 267 1 TUNING ? ? 4 P.CALL ? ? 89 VOL.DOWN 1 2 3 4 5 6 7 # 9 0 ! 8 7 DVD CONT key Used to operate DVD player. While holding this key depressed, press any of the keys masked in gray inthe ab

37、ove illustration to operate the corresponding function of a DVD player from KENWOOD. Keys 3, 4, 5, 9 and ! are given the following functions during the DVD player control operation. 3 :TITLE 4 :ENTER 5 :SUB TITLE 9 :MENU ! :OSD For details, refer to the instruction manual of your DVD player. 8 POWER

38、 key Use to switch the power ON/STANDBY when the POWER is turned ON. 9 SOURCE DIRECT key 0 VOLUME CONTROL key ! SETUP key Use to select the surround sound settings. MONITOR key # Input selector keys Use to select the receivers input source. KRF-V7020D/V8020D/VR-307/309/357 6 BLOCK DIAGRAM LINE BUF P

39、HONO EQ X05 IC16 NJM2279M CS4226 LPFLPFLPFLPF x2x2x2x1 M62446SP 6ch E. VOL with 2ch TONE CONT. x0.5 BUF STK411-230 STK410-030 +20/0dB +B HITAP -B HITAP +B LOWTAP -B LOWTAP CD COXIAL OPTICAL VIDEO2 IN DIGITAL VIDEO3 VIDEO2 VIDEO1 CD PHONO TAPE /MD MONIPLAY MONI /MD TAPE VIDEO1 VIDEO3 VIDEO2 VIDEO1 VI

40、DEO1 MONITOR S-VIDEO IN REC OUT Lch H, P, Rch H, P, Lch Rch Cch Lch Rch LSch RSch SWch PRE OUT SP-B SP-A AC IN +5V A.V.R for u-COM +15V A.V.R A.V.R -15V +5V +7V -7V A.V.R 5V for E. VOL for u-COM for FIL AC (AUDIO and VISUAL) TUNER etc. for AMP (HI TAP) for AMP (LOW TAP) for RELAY SW TC9163 TC9164 A1

41、 J1 IC6(1/3) IC7(3/3) IC7(1/3) IC7(2/3) IC6 IC8 IC6(2/3) VIDEO (Y)SEL (NOT for K,P TYPE) Q1 SWITCHED S1 D1,4 D2 D5 IC1 IC2 -30V IC13 Q2 IC1IC2 IC8 (2/2) IC8 (1/2) IC9 IC7 IC5 IC11 Q3 Q4 Q7 Q5 Q6 Q8 Q9 Q10 Q13 Q11 Q12 IC4 IC3 2.0V/2.2KSWch PRE OUTPUT CXP82852-139Q u-COM INPUT SEL. TUNER TC9162 D1-4 (

42、1/2) (2/2) (1/2) (1/2) (2/2) (2/2) IC10 IC10 IC12 IC11 IC11 IC12 SP. OUTPUT 5CH. SP.28.3V/8 COXIAL VIDEO3 SUB S5 S2 DIG S4 L,R MIX IC10 S3 LS,RS S7 NOSUB ANA S1 REC OUT BUF IC9 S1 S2 S3 S4 S4 S5 S6 S7 S8 S1 S2 S3 IC6(3/3) ANALOG REC S7 DIGITAL REC S8 Q43 Q44 D3 A.V.R for for DSP A.V.R 3.3V IC14 6dB

43、ATTMUTE SYNC AC3 DECODER SUB DSP B A A B YSS902 YSS902SDIBSEL=0 SDIBSEL=1 (VISUAL IN/OUT) S5 S6 DSP IC1 Lch Rch Cch LSch RSch SWch NJM2279M IC17 VIDEO (C)SEL AD/DA etc. for DSP -5V A.V.R IC19 A.V.R IC18 5V IC12 for DIR. A.V.R 5V NJM2279M VIDEO SEL IC4 MONITOR VIDEO 1 VIDEO 1 VIDEO 2 VIDEO 3 VIDEO OU

44、T VIDEO IN 200mV/2.2K 200mV/47K OUT IN 2.5mV/27K (AUDIO IN/OUT) PHONO OTHER KRF-V8020D,VR-209 USED K1 S-VIDEO OUT 1Vp-p/75 0.286Vp-p/75C Y S-VIDEO IN/OUT (VISUAL IN/OUT) 1Vp-p/75 VIDEO IN/OUT IC51 LFE DA AD 2 2 BYPASS SW C LS,RS L, R L, R L R C LS RS SW DIR CLS/RSL/R + + + + + + + 4700uF 4700uF 3300

45、uF 470uF 2200uF 3300uF 2200uF + 2 LR LS,RS C,LFE L,R C,SUB C,SUB L,R LS,RS C Y Y C Y C Y C Y C KRF-V7020D/V8020D (X00) (X08) (X09) (X08) VR-307/309/357 KRF-V7020D/V8020D/VR-307/309/357 7 CIRCUIT DESCRIPTION (0 : Pull down, 1 : Pull up) TYPEBAND Reception frequency Channel IF PLL standard Diode sw sp

46、ace frequencyDSW3DSW2DSW1DSW0 K1 FM87.5MHz108.0MHz100kHz+10.7MHz25kHz 0000 1700 AM530kHz1700kHz10kHz+450kHz10kHz K2 FM87.5MHz108.0MHz100kHz+10.7MHz25kHz 0001 1610 AM530kHz1610kHz10kHz+450kHz10kHz K4 FM87.5MHz108.0MHz100kHz+10.7MHz25kHz 1010 1700 RBDS AM530kHz1700kHz10kHz+450kHz10kHz E1 FM87.5MHz108.

47、0MHz50kHz+10.7MHz25kHz 0011 AM531kHz1602kHz9kHz+450kHz9kHz E3 FM87.5MHz108.0MHz50kHz+10.7MHz25kHz RDSAM531kHz1602kHz9kHz+450kHz9kHz 0101 FM L65.0MHz74.0MHz10kHz+10.7MHz5kHz Q1 FM H87.5MHz108.0MHz50kHz+10.7MHz5kHz 1011 RDS AM531kHz1602kHz9kHz+450kHz9kHz M K2/E1 is switched with only the setting of DSW1 (X11 : S601). 00X1 (DSW1 = 0 : K2 type, 1 : E1 type) 77767574 1. The back up item and initialization condition 1-1 Back up POWER: POWER OFF VOLUME LEVEL: -66dB AUDIO INPUT SELECTOR: TUNER VIDEO INPUT SELECTOR: VIDEO 1 SPEAKER A: ON SPEAKER B: OFF BASS: 0dB TREBLE: