Kenwood-CV750-rec-sm 电路图 维修手册.pdf

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1、STEREO INTEGRATED AMPLIFIER/TUNER C-V500/V550/V700/V750/V770 SERVICE MANUAL 1997-7 /B51-5330-00 (K/K) 3676 ON/STANDBY PHONES INPUTTAPE 2 (MONITOR) VOLUME CONTROL DOWNUP AV CONTROL CERTER KC-2 CLOCK TIMER MODE RDS PTYDISPLAY TIMER SET S.DIRECT ON/OFF TA/NEWS/INFO. SETRT VOICE ACTIVATE STEREODSP A.MEM

2、OAUTOBANDTUNING PTY SELECT MODE MULTI.CONTROL LEVEL OPEN/CLOSE VOICE ACTIVATE D I G I T A L R D S ANTENNA AM FM 75 GND CONNECT WITH POWER AMPLIFIER SYSTEM CONTROL CDAUXTAPE 1/ MD ININRECPLAYININ TAPE 2 (MONITOR) AUDIO FRONTRECRECPLAYPLAY VOICE ACTIVATE MONITOR OUT SURROUND AUDIOVIDEO CENTER INPUTAC-

3、3 SUBWOOFER UNSWITCHED LDVCR CABLE / SAT. L R LDDVD DVD 6CH.INPUT DIGITAL IN DIGITAL IN Indicator (B12-0311-04) Front glass (B10-2350-04) Panel (A29-0861-01) Front glass (B10-2351-04) Lock terminal board (E70-0052-05) Metallic cabinet (A01-3432-01) Miniature phone jack * (E11-) Phono jack (E63-0162-

4、05)x2 Phono jack * (E63-) Power cord bushing (J42-0083-05) Rectangular receptacle (E58-0018-05) Miniature phone jack (E11-0188-05) Phono jack(6P)x3 * (E63-) Phono jack (E63-1008-05) Phono jack * (E63-) AC power cord * (E30-) AC outlet * (E03-) Knob (K29-6665-02) Knob (K29-6665-02) Knob (K29-6666-02)

5、 Knob (K29-6664-02) Knob (K29-6665-02) Knob (K29-6660-04) Caution : No connection of ground line if disassemble the unit. Please connect the ground line on rear panel, PCBs, Chassis and some others. Phone jack (E11-0282-05) Illustration is C-V750. * Refer to parts list on page 40. C-V500700(k) COVER

6、( 98.4.24 1:43 PM yW 2 RadioFans.CN 收音机爱 好者资料库 C-V500/V550/V700/V750/V770 2 CONTENTS / ACCESSORIES Contents CONTENTS / ACCESSORIES .2 DISASSEMBLY FOR REPAIR.3 ADJUSTMENT.4 PARTS DESCRIPTIONS .5 PC BOARD .6 SCHEMATIC DIAGRAM .13 EXPLODED VIEW .39 PARTS LIST.40 SPECIFICATIONS .Back cover Model vs dest

7、ination MODELDESTUNERPREAMPCONTROLDISPLAYREMOTE CONTROL C-V500KX05-4680-10X08-2770-10X11-3720-10X14-4570-10 PX05-4680-10X08-2770-10X11-3720-10X14-4570-10 YX05-4670-20X08-2772-91X11-3722-91X14-4570-10 C-V550IX05-4670-21X08-2820-20X11-3780-20X14-4580-20 MX05-4670-21X08-2820-20X11-3780-20X14-4580-20GRC

8、-100(A70-1159-05) XX05-4670-72X08-2820-71X11-3780-71X14-4580-20 C-V700IX05-4670-21X08-2820-21X11-3780-21X14-4600-20 MX05-4670-21X08-2820-21X11-3780-21X14-4600-20 XX05-4670-72X08-2820-72X11-3780-72X14-4600-20 C-V750EX05-4682-71X08-2772-71X11-3722-71X14-4592-70GRC-150(A70-1137-05) TX05-4680-51X08-2770

9、-51X11-3720-51X14-4592-70GRC-150(A70-1137-05) C-V770CX05-4670-21X08-2823-01X11-3783-01X14-4603-01GRC-100(A70-1159-05) Accessories FM indoor antenna(1) (T90-0810-05) Loop antenna stand (1) Cable tidy(2) (F07-1602-04) *AC plug adapter(1) (E03-0115-05) Microphone(1) (W01-0935-05) * Graphical Remote Con

10、trol unit(1) GRC-100 (A70-1159-05) GRC-150 (A70-1137-05) Battery cover (A09-0379-08) Batteries(R03/AAA)(4) *Use to adapt the plug on the pow- er cord to the shape of the wall outlet. (Accessory only for re- gions where use is necessary) How to reset the microcomputer The microcomputer may malfunctio

11、n (impossibility operation,erro- neous display,etc.)when the power cord is unplugged and plugged in again while the unit is in ON mode with the Key pressed or due to other extern al causes.In this case,execute the procedure on the right to reset the microcomputer and return the unit to the normal co

12、ndition Unplug the power cord form the wall outlet. While pressing and holding the POWER or (ON/STANDBY)key,plug the AC cord into the wall out- let again Resetting the microcomputer clears the memory you entered and returns in to the initial condition when the unit left the factory. ON/STANDBY MUTE

13、VOLUME ENTER Setup DVD/6ch Input Sound Speaker C D Sat. Tape1 Cable Reset VCR1 VCR2 L D T V ConfirmSet UpReturn Input Source Main Menu TapeA TapeB Tape1LDTunerCD VCR2VCR1TVSat.Cable AM loop antenna(1) (T90-0820-05) *Refer to parts list on page 40. C-V500700(k) COVER( 98.4.24 1:43 PM yW 3 RadioFans.C

14、N 收音机爱 好者资料库 C-V500/V550/V700/V750/V770 3 DISASSEMBLY FOR REPAIR 1. Remove the 1 screw (1), Then pull the slider (2) till last 2. While raise the slider of left side, remove the slider from the bosses (3,4) 1 3 4 4 4 4 4 4 2 x2 x2 C-V500700(k) COVER( 98.4.24 1:43 PM yW 6 RadioFans.CN 收音机爱 好者资料库 C-V5

15、00/V550/V700/V750/V770 4 ADJUSTMENT No.ITEM INPUT SETTING OUTPUT SELECTOR TUNER/AMP SETTING ALIGNMENT POINTS ALIGN FORFIG. SELECTOR : FM 1 DISCRIMINATOR L31L32 (E, T only) (A) 98.0MHz 1kHz, 40kHz dev (E, T type) 60dBu (ANT INPUT) Connect a DC voltmeter between port of CN2 AUTO 98.0MHz L31 (X05-)0V (

16、a) (B)L32 (X05-) Minimum distrotion 2 DISTORTION (STEREO) (C) 98.0MHz 1kHz, 40kHz dev pilot: 6kHz dev 60dBu (ANT INPUT) (B) AUTO (98.0MHz) IFT (W02-) Mininum distrotion (a) ANTENNA AM FM 75 GND CONNECT WITH POWER AMPLIFIER SYSTEM CONTROL CDAUXTAPE 1/ MD ININRECPLAYININ TAPE 2 (MONITOR) AUDIO INRECRE

17、CPLAYPLAY MONITOR OUT AUDIOVIDEOINPUTAC-3 UNSWITCHED LDVCR CABLE / SAT. L R LDDVD DVD DIGITAL IN DIGITAL IN Oscilloscope Distortion meter AC voltmeter Dummy antenna (B) (A) (C) (D) AG AG FM SG MPX AG FM SG AM SG (a) ERROR MESSAGE DISPLAYDESCRIPTION ERR 1Main u-com sub clock no output ERR 2Main u-com

18、 sub clock frequency NG C-V500700(k) COVER( 98.4.24 1:44 PM yW 7 C-V500/V550/V700/V750/V770 5 PARTS DESCRIPTIONS C-V500700(k) COVER( 98.4.24 1:44 PM yW 10 6 ABDCE 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD(Component side view) C-V500700(k) COVER(

19、 98.4.24 1:46 PM yW 11 FHJLNGIKMO 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD(Component side view) 78 c-v500(k) pcb 2p 98.4.24 1:18 PM y W 1 PQSUWYRTVX 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and capacitors. PC BOAR

20、D(Component side view) 910 c-v500(k) pcb 2p 98.4.24 1:20 PM y W 2 ZABADAFAHAAACAEAGAI 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD(Component side view) 1112 c-v500(k) pcb 2p 98.4.24 1:20 PM y W 3 ABDFHJCEGI 2 1 3 5 7 4 6 () ( ( ( ) ) ) 18 R27 10K P

21、HASE DETECTOR CHARGE PUMP DATA SHIFT REGISTER LATCH 470PR21 1K 3 C2B I/F C37 7.2MHz X1 C38 C36 27P 22P 3 CE 2 NC 1 X IN 5 CL 4 DI R22 1K R23 1K R20 1K 6 DO 8 7 BO1 5 4 2 9 10 11 REFERENCE DIVIDER 12bit SWALLOW COUNTER PROGRAMMABLE 1 2 DIVIDER 1/16, 1/17 4bit C31 47u10 C32 0.01 22X OUT 20AOUT 21 VSS

22、+ R70 1K C28 19AIN 0.022 C29 2.2u50 C30 100u16 + 5.6K R24 1uH L3 330 270 1/4W S-CURVE UNIVERSAL COUNTER DETECTOR UNLOCK R32 1.2K 12K R33 1/4W 100P C33 PD 17VDD 15 16FM IN C34AM IN 1/4W L4 + R26 1uH 560 R30 13 14NC 1000P C35 12 1000P IF IN R29 R28 10K 1K 1K R25 100 R31 10K R8 330 R2 100 R44 3.3K R1 C

23、F1 C2 680 C1 330 R4 0.01 R5 10 R3 0.01 CF2 C9 10u16 C10 0.047 + R47 15K 2 1 FMIF DET DET LEVEL FM 270 1W R41 10u16 + C25 0.1 L2 3 C20 5 4 6 REG FM IF AM/ BUFF GND DRIVE TUNING AM IF COMP CF3 10.7MHz 8 270 7 R17 C5 1000P 9 10 AM FM AM DET FM SW AM/ VCC 8.2K C63 22P C23 1u50 + R19 3K R18 + 2.2u50 C11

24、1u50 11 C12 + 47K R48 12 PHASE DET FF VCO DRIVE FF TRIG FF DET PILOT 1000P 22 C27 + 1u50 L1 + C26 47u16 R42 220 R43R45 10K R46 100K 0.01 C8 TUNE R6 100 4P C65 24 7.5K R14 R40 1K BUFF ALC AM OSC 23 22P C15 1u50 C14 + C13 AM RF.AMP AM MIX 21 AGC 20 19 10u16 C16 R13 47K + R7C17 18 MUTE 17 C19 4.7u25 16

25、 47K5600P 1000P C18 X2 456kHz UNTIBIRDIE STEREO DECODER 15 14 SW STEREO 13 C22 C21 VT VOLTAGE AM FM BAND HF LF HF LF FREQ. 5.2V 1.4V 7.6V 1.6V VT 0.011 0.011 C1 0-8P GND4 3 2 0.1 C9 ANT11C2 10P 0-100 R2 L3 L4 27P C7 C16C15 8P C13 2-6P R10 18P 680-2.2KR7 100K- 100 R11 C17 100P 6 7 8OSC IF-OUT VCC IFT

26、 3P C4 5 C8 0.1 VT R1 100K 180P C18 L2 GND GND R3 33K C3 0-8P C19 33K R4 180P L5 C5 1000P R13 680 R5 470K- 1.2M C10 0.1 C6 4P R12 100 680K C20 L6 0-8P C12 150P 3.9K R6 68 R14 L1 R9 10K C14 27P 10K R8 R73 680 R12 1K LF: LOWEST FREQUENCY HF: HIGHEST FREQUENCY C64 33P X M ABB. YC-V500 C-V500 C-V500 COU

27、NTRY DESTINATION X05-4670-21 UNIT No. YES YES A I X05-4670-20 X05-4670-72NO AUSTRALIA AUSTRALIA C-V770 MALAYSIA GENERAL MARKET DESTINATION COUNTRY X05-4670-72 X05-4670-21 X C I M NO YES UNIT No. ABB. A +15V +5V +11V +11V +11V +11V +11V +11V +11V +11V +11V +5V +11V +11V GND LINE SIGNAL LINE +B +B FM:

28、6.6V 10.5V 1.8V9.5V 1.0V 11.0V (0V) 0V 0V 1.0V 5.1V 11.0V 2.2V 1.0V 0V (2.6V) 2.6V (0V) 2.6V 4.3V ST: 4.3V MONO: 0V 0V (9.0V) 5.1V 2.2V 0V 0.5V 3.1V (3.7V) ST: 0V MONO :4.8V 3.9V (1.4V) 5.1V 0V (0.6V) 4.0V (0V) 3.7V 5.1V 2.3V (2.1V) 2.3V (2.1V)2.0V (2.1V) 0V (2.9V) 2.6V (2.1V) 2.1V 2.4V (0.3V) 1.4V

29、1.4V 4.1V 2.6V IC2 (X05-4670-XX) : C-V500/V550/V700/V770 TYPE IC1 A1 (W02-2582-05) AM ANT D1,2,8 Q5,9,10 Q1 D3,4 Q3,6 IC2 IC1 : 2SC2714(R,O) : 2SA1576A(R,S) or 2SA1586(Y,GR) or HSS104 MTZJ5.1(B) or UZ-5.1BSB : 1SS133 or 2SD1819A(Q,R) : RD5.1ES(B2) or HZS5.1N(B2) or : 2SC4081(R,S) or 2SC4116(Y,GR) or

30、 2SB1218A(Q,R) : LC72131 : LA1832 J2 D3 PLL VT 300 GND J1 75 D1 D2 FM+B Q3 Q1 D10 D4 AM IFT SYSTEM AM/FM/ MPX D8 OFF:AM ON:FM Q5 FM IF AMP IC4: NJM4565M : 2SD1757K or 2SD2114KQ7,8 D12 TR1 TR2,3 FET : 2SC2413 : 2SC2714 : 2SK302 FET FM FRONT END TR2 TR1 D1 D2 TR3 D3 RF AMP OSC OSC BUFFER D1-3: HVU202

31、or 1T362 FM FM DISTORTION(ST)MIX D13 D10: MA111 D13 C-V500 C-V700 : RD3.3ES(B2) or HZS3.3N(B2) or MTZJ3.3(B) or UZ-3.3BSB : RD2.7ES(B2) or HZS2.7N(B2) or MTZJ2.7(B) or UZ-2.7BSB +B LINE -B LINE X MODECARRIER MODULATION ANT INPUT FREQUENCYDEVIATION FM98MHz1kHzSTEREO 67.5kHz 7.5kHz(Pilot)60dB AM1000(9

32、99)kHz400HzMONO 30% MOD60dB The DC voltage is an actual reading measured with a high impedance type voltmeter as the AM/FM signal generator is specified to the conditions as shown in the list below. The measurement value may vary depending on the measuring instruments used or on the product. The val

33、ue shown in () is actual reading measured in the AM made. c-v500(k) pcb 2p 98.4.24 1:21 PM y W 4 KMOLN Y05-3380-10 C-V500/V550/V700/V750/V770 ( ( ( ( ) ) ) ) X R15 39K R16 39K R49 R50 470 47K C57R57 1u50 1u50 C62 C58 4700P + C61 + 4700P 47K CH.SPACE1 GND10 2 3 4 5 6 4 2 3 5 T.MUTE PLLCE PLLDO PLLCLK

34、 PLLDATA 9 8 7 Lch +15V -15V 15 13 14 11 12 SD DET S-LEVEL Rch STEREO 3/5 -E4 X11-A/5 R55 150K 10u16 + C59 3.3K R59 R53 47K R51 47K 3 2 1 8 + - R52 47K R58 C60 10u16 47K R56 150K 47K R54 6 5 - + 7 4 + R60 3.3K W115 R61 10K R62 56K R63 820 1K R65 R64 1K C67 1000P +15V -15V-15V +15V+15V +15V +15V +15V

35、 +15V +15V 0V 0V 0V -14.9V 0V 0V 0V MUTE ON: 0.3V MUTE OFF:4.9V ON: 0.7V OFF: -2.3V 75us: 0.6v 50us:0v 14.5V C-V500/V550/V700/V750/V770 (1/6) A Q10 Q9 CN1 IC4 (1/2) IC4 (2/2) S1 CH SPACE DE-EMPHASIS FM:50kHz 50uS AM:9kHz 75uS AM:10kHz FM:100kHz Q7 Q8 Q6 D12 MUTE MUTE DRIVE DE-EMPHASIS A CAUTION: For

36、 continued safety, replace safety critical components only with manu- facturers recommended parts (refer to parts list). indicates safety critical com- ponents. For continued protection against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakag

37、e-current or resis- tance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appli- ance is returned to the customer. The DC voltage is an actual reading mea- sured with a high impedance type volt- meter with no signal input. The measure- me

38、nt value may vary depending on the measuring instruments used or on the product. C-V500700(k) COVER( 98.4.24 1:46 PM yW 14 PQSRT 2 1 3 5 7 4 6 X X X X X X X X X +B LINE -B LINE 27P C82 L61 1uH C2 1u50 + BAND FREQ.VT FM LF HF 1.6V 7.8V AM 1.3VLF HF5.0V VT VOLTAGE L62 W52 W54 W51 C1 0-8P GND4 3 2 0.1

39、C9 ANT11C2 10P 0-100 R2 L3 L4 27P C7 C16C15 8P C13 2-6P R10 18P 680-2.2KR7 100K- 100 R11 C17 100P 6 7 8OSC IF-OUT VCC IFT 3P C4 5 C8 0.1 VT R1 100K 180P C18 L2 GND GND R3 33K C3 0-8P C19 33K R4 180P L5 C5 1000P R13 680 R5 470K- 1.2M C10 0.1 C6 4P R12 100 680K C20 L6 0-8P C12 150P 3.9K R6 68 R14 150K

40、- GND 4 GND3 GND2 1 ANT1 220 R16 L7 C17 2-6P 47P C16 3.9K R12 1-3P C22 470- R17 10P C21 8P C19 560K R18 0-100 33K R3 100K 10P C6 C7 5-10P0.1 C14 L3 L4 R2 R4 5P 1000P C10 680K-1.5M R5 100 R8 L6 680 R9 C15 27P C12 2P C11 C9 100 R19 OSC C23 100P 8 VCC IF-OUT 0.1 6 IFT 0.1 C13 7 VT5 R1 100K 3-7P C5 27P

41、C3 L2 0-5P C4 15P C2 L1 27P C1 R6 33K R7 33K C8 0-6P L5 1.5K C20 27P 10K R15 R14 10K 0-100 R11 DESTINATION COUNTRY ABB. K PCANADA U.S.A. UNIT No. 0-12 A - C NO R3 560 R16, 15 20 C53, 54 0.033 63 C62, NO C73 YES CF1,2 L72-0536 L62 L39-1351 W11 NO W51,52, 54,55 YES 10K R9 10K R8 C14 27P L1 LF: LOWEST

42、FREQUENCY HF: HIGHEST FREQUENCY W76 R61 22K 1M R70 R61-66, NO 68,70 (MS3) 53,76 NO W6,13, 0.027 C53, 2-71 UNIT No. COUNTRY DESTINATION ABB. 1.8K R3A - C YES R61-66, 20 10 R16, 68,70 NO L39-1351 L72-0596 C62, 6354 NO C73 CF1,2 (MS2) L62 W51,52, 54,55 YESNO 53,76 W6,13, W11 YES EUROPEE U.K.T0-51YES NO

43、 YES NO Q61- 65 Q61- NO 65 YESL39-1352YESNO +7V GND LINE SIGNAL LINE +B +B 3.6V MW: 0V LM: 0.7V (X05-468X-XX) C-V500/V750 (K,P,T,E) TYPE (K,P) TYPE A1 (W02-2582-05) A1 (W02-2584-05): (T,E) TYPE (T,E) TYPE J2 IC1: LA1836 IC2: LC72131 D1,2,32,61,62: 1SS133 or D31: RD8.2ES(B2) or D62 D61 HSS104 HZS8.2N

44、(B2) AM ANT GND J1 75 TR1 TR2,3 FET : 2SC2413 : 2SC2714 : 2SK302 FET FM FRONT END TR2 TR1 D1 D2 TR3 D3 RF AMP OSC OSC BUFFER D1-3: HVU202 or 1T362 FM TR3 : 2SC2413 KV1440 : SVC220 or : 2SK302 : 2SC2714 J2 FET1 TR2,3 TR1 D1-4 GND AM ANT FM 75 J1 OSC D4 TR2 D2 FET1 RF AMP FM FRONT END TR1 BUFFER OSC D

45、1 D3 : 2SC4081(R,S) or 2SC4116(Y,GR) Q1,2,4,31-34,61,62 2SA1586(Y,GR) : 2SA1576A(R,S) orQ3,64,81,103 : 2SD1757KQ101,102 D81: RD5.1ES(B2) or HZS5.1N(B2) D101: RD3.3ES(B2) or HZS3.3N(B2) D102: RD2.7ES(B2) or HZS2.7N(B2) C-V500 (X05-4680-10) MIXDISTORTION(ST) DISTORTION(ST)MIX Q61 Q65 Q65: 2SK302(Y,GR)

46、 Q63: 2SC2878(B) C-V750 (X05-468X-XX) C-V500700(k) COVER( 98.4.24 1:46 PM yW 15 UWYAAACVXZABAD () )( )( )( X X X X ( ( ( ( ) ) ) ) X X X X X X X X X X X X X X X X X X X X R80 1K R81 1K R83 1K R82 1K 2 4 5 3 470P R84 10K 22P C81 + 10u16 C87 0.01 C93 7.2MHz X81 560 R94 1/4W COUNTER UNIVERSAL X OUT DO

47、CL CE X IN DI BO1 CHARGE PUMP PHASE DETECTOR PROGRAMMABLE 1/16, 1/17 4bit SWALLOW COUNTER 12bit DIVIDER DATA SHIFT REGISTER LATCH DIVIDER REFERENCE 2 1 VSS PD AIN VDD NC AM IN FM IN IF IN NC UNLOCK DETECTOR AOUT 22 21 20 19 18 17 16 15 14 13 12 1 2 3 4 5 6 8 7 10 9 11 456kHz 7 BUFF 3 2 1 FM IFFM DET

48、 4 L33 5 6 REGGND FM DRIVE TUNING AM BUFF LEVEL DET S-CURVE 30 OSC AM ALC 29 28 AM/ IF FM S METER DETIF COMP AM AGC AM RF.AGCMIX AMAM 27 25 26 DET 12 PHASE DET 8 9 10 11 SW AM/ FM VCC 13 14 15 DECODER UNTIBIRDIE VCO FF STEREO DRIVE 24 23 22 21 MUTE PILOT FFFF TRIG SW STEREO 18 20 19 17 16 X31 C36 0.047 10u16 C35 + 10u16 C33 C34 0.01 C32 + C31 47u16 0.01 C37 33K R59 2.7K R32 5.6K 10u10 C38 + C30 0.047 R331u50 C40 + 0.47u50 C41 +