Kenwood-RXD790-cs-sm 电路图 维修手册.pdf

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1、MINI HiFi COMPONENT SYSTEM RXD-790/V860/V890 SERVICE MANUAL (XD-790/V860/V890) 1997-9/B51-5357-00 (K/K) 1586 3721 O.T.E.DUBBINGREC/ARMDOLBY NRREV. MODE A/B 0? PUSH OPEN 0? PUSH OPEN 0 674 DISC SKIP DISC SELECTOR TIME DISP. OPEN/CLOSE DISC1DISC2DISC3 D O W N U P C L A S S I C E Q . O F F EX.BASS STER

2、EOSRS 3DPRO LOGIC DOLBY 3 STEREOMODE INPUT DISPLAYBEST HITS DEMOAUTO POWER SAVE MIC MIX. MIN. MAX. MIC1MIC2 PHONES ON/STANDBY AUTOENTERBAND POPROCKM/R RESET MINI HiFi COMPONENT SYSTEM MULTI CONTROL /VOLUME TUNING Front glass (B10-2391-02) Panel (A60-1245-11) Knob (K29-6864-03) Knob* (K29-) Knob (K29

3、-6759-12) Front glass (B10-2282-12) Cassette lid (A53-2019-12) Knob (K29-6866-02) Lighting board (B19-1563-13) Knob (K29-6863-03) Knob (K29-6832-13) Phone jack (E11-0280-05) Knob (K29-6832-13) Knob (K29-6865-02) Knob (K29-6832-13) Knob (K29-6865-02) Front glass (B10-2283-12) Cassette lid (A53-2020-1

4、2) Knob (K29-6861-04) Illustration is RXD-790. * Refer to parts list on page 62. KENWOOD-Corp. certifies this equipment conforms to DHHS Reg- ulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J. DANGER : Laser radiation when open and interlock defeated. AVOID DIRECT EXPOSURE TO BEAM. In compliance

5、 with Federal Regulations, following are reproduc- tions of labels on, or inside the product relating to laser product safety. RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 2 RadioFans.CN 收音机爱 好者资料库 RXD-790/V860/V890 2 CONTENTS / ACCESSORIES Contents Accessories Remocon configurationSystem configuratio

6、n CONTENTS / ACCESSORIES . 2 EXTERNAL VIEW.3 DISASSEMBLY FOR REPAIR.4 BLOCK DIAGRAM .5 CIRCUIT DESCRIPTION .6 ADJUSTMENT.13 WIRING DIAGRAM.17 PC BOARD . 19 SCHEMATIC DIAGRAM . 31 EXPLODED VIEW . 59 PARTS LIST.62 SPECIFICATIONS.75 Please confirm that the following accessories are present. FM indoor a

7、ntenna .(1) (T90-0801-05) Loop antenna .(1) (T90-0820-05) AM loop antenna stand .(1) (J19-3645-05) Speaker cords . (2) (E30-5120-08) Remote control unit .(1) (A70-1160-05) : RXD-790.RC-790 (A70-1161-05) : RXD-V860.RC-V860 (A70-1162-05) : RXD-V890.RC-V890 Speaker stabilizer.(8) (G11-2345-04) Battery

8、cover (A09-0380-08) Batteries (R6/AA) .(2)AC plug adapter. (1) (E03-0115-05) REMOTE CONTROL UNIT N.B. SLEEP INPUT DISC SKIP O.T.E. REPEATRANDOMEDITP. MODE BAND P. CALL CD TUNING PTY TAPEA/B TA/NEWS /INFO. RDS DISPLAY EX.BASSSRS 3D AUTO VOLUMEEQ. PTY SEARCH 123 456 789 0+10 MUTE PART NAMEMODEL NAME A

9、70-1160-05RXD-790 A70-1161-05RXD-V860 A70-1162-05RXD-V890 SYSTEMMAIN UNITSPEAKERSPEAKER XD-790RXD-790LS-N850CRS-N850 XD-V860RXD-V860LS-N850 XD-V890RXD-V890LS-N850CRS-N850 RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 3 RadioFans.CN 收音机爱 好者资料库 RXD-790/V860/V890 3 EXTERNAL VIEW ANTENNA AM FM 300 FM 75GND

10、 RL AUX INPUT RL AUX OUTPUT SUPER WOOFER PRE OUT FRONT SPEAKERS (6-16) SURROUND SPEAKERS (8-16) CENTER SPEAKER (8-16) +- AC220- 240V AC110- 120V RL +-+ RL +-+ Metallic cabinet (A01-3532-01) Lock terminal board (E70-0057-05) Lock terminal board (E70-0054-05) Lock terminal board * (E70-0057-05) Lock t

11、erminal board (E20-0476-05) Phono jack (E63-1001-05) Phono jack (E63-0200-05) Slide switch (S62-0001-05) Power cord bushing (J42-0083-05) AC power cord * (E30-) Illustration is RXD-790. * Refer to parts list on page 62. RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 6 RadioFans.CN 收音机爱 好者资料库 RXD-790/V86

12、0/V890 4 DISASSEMBLY FOR REPAIR # Remove main PCBs, then connect between PCB GND and chassis with alligator clip. 1. How to remove the main PCB. (1) Remove the 4 screws 1. (2) Remove the 9 screws 2. (3) Lay the rear panel with left side downward on the small box . 2. How to remove the front panel. (

13、1) Remove the 3 screws 1. (2) Remove the 5 screws 2. # Remove the deck mechanism only with the fixed frame on the panel. 3. How to remove CD mechanism (After remove the front panel) (3) Remove the 5 screws 3, then remove CD mecha- nism(4) with the laid set. (4) Assemble the front panel then check (+

14、) position. # Connect between video out terminal GND and unit chassis with alligator clip. A 1 1 1 A 2 2 2 2 2 x2 x4 x31 2 2 2 2 2 x2 4 5 3 x23 3 RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 7 (X08) (X09) RXD-790/V860/V890 (X32) (X09) (X14) T25-0050 (CDM-27) MECHA. A,B (X28) (X05-466) (K,M,X) (X05-475

15、) (V) SUR. 20V/8C ch S ch20V/8 (X05) (X08) AUDIO OUT OTHER CH 24.5V/6 17.2V/6FRONT 2ch 5V 9V RF D.P.S.S HIGH SPEED REC SIGNAL XLON MDP SPOB L,R LED A,B SOL- MOTOR- MOTOR B MOTOR A P.H A,B VR5,6 A PB B R/P IC DATA1 E STB IC DATA IC CLK RM:ON/OFF P/R NR:ON/OFF BIAS:ON/OFF B:120/70 A:120/70 A/B BIAS SW

16、 580mV 0dBS PB OUT REC IN PASS DCL REC PB VR3,4 REC OUT BIAS TRAP B PB AMP LEVEL VR7,8 A PB IC2 A PB AMP -22dBS 60mV B ERASE SRC OFF ON TAPE TUNER CD AUX AM:180mV/3.3k FM:600mV/3.3k TUNER OUTPUT IC4 BA3126N 70u 120u B A B PB LEVEL VR1,2 IC3 RXD-790/V890 PRE OUT RXD-790/V890 RXD-790/V890 RXD-V860/V89

17、0 Rch SEL /75 1Vp-p 2V/1k C S S IC10 IC7 SUR. 2ch 200mV/1.1k AUX OUT AUX OUT MUTEATT ATTMUTE PAL/NTSC EHPASIS MECHA.A,B MUTEATT IC3(1/2) IC6(1/2) IC6(2/2)IC3(2/2) OUT VIDEO IC5 IC4 IC8 (AC10V) Q13,14 D12 AVR (W02) CD VIDEO IC7 P/C EXPANDER SERE PARA. IC9 DAC PCM IC14 IC10 u-COM VIDEO-CD IC5 IC2 IC1

18、DOLBY LOGIC PRO E-VOL Q1Q9 Q2Q10 - + CENTER SP Q1,2Q3,4 IC3 EXPANDER AVR Q61 AVR Q60,63Q56 AVRAVR MUTE Q7-10 Q10,11 IC1 HA12209F MS IC2IC1 MAIN u-COM A1ED1 SENSOR REMOTE FL DISPLAY SPEANA POWER SUPPLY FINAL TR-12V D28D25,26D20 -30V12V5.6V IC9 AC AMP MAIN Q5-16 SP.OUTPUT WOOFER SUPER PHONES SURROUND

19、SP. + + - - R L SP. MAIN R L + - - + IC5 N.B GE. CANCEL VOICE VOL. ELECTRIC IC2-4 SRS 5V u-COM MOTOR 12V DSP 5.6V SW1-SW5 P/C IC6 CONTROL DSP POWER DRIVER MUTE RESET IC2 CXD2500BQ DSP/DAC IC1 RF AMP/SERVO CXA1782BQ LA6537 IC9 LD SW CONTROL NJU3713D S/P ROTARY MOTOR SPEED CONTROL L.M DRIVER LOADING R

20、OTARY DRIVER R.M TRAVERSE UNIT D40-1500 START LIMIT SW FOCUS TRACKING CONTROL DRIVER GAIN IC3 4ch BTL DRIVER D.M DRIVER DISC MOTOR DRIVER FEED MOTOR F.M COIL DRIVER TRACKING COIL COIL FOCUS COIL DRIVER LD SW Q5 LD F E C B A IC5 BA10393 Q3,4 Q1,2 IC6 NJU3714D MS MAIN +5V OUT L1 MPX L.P.F. CHANNEL OTH

21、ER DOLBY Q5 CONTROL BIAS BEAT CANCEL Q7,8 OSC BIAS AUX IN AUX IN 200mV/47k MIC1,2 1.6mV/2.2k MIC INPUT SEL. IC1 VR1 IC8 IC7 MIC ECHO MIXING IC6 (2/2) MIC AMP IC6 (1/2) BLOCK TUNER RXD-790 (X32) : Refer on page5 (X32) of RXD-500/700 servi manual (B51-5300-05) RXD-V860 (X092) : Refer on page5 (X09) of

22、 RXD-500/700 servi manual (B51-5300-05) (X08) : Except RXD-V860 RXD-790/V860/V890 5 BLOCK DIAGRAM RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 10 RXD-790/V860/V890 6 CIRCUIT DESCRIPTION 1. Initialization 1-1 Setting of initial conditions While pressing the ENTER key, plug the AC cord into the AC power

23、 outlet. 1-2 Initializing operation A microcomputer is initialized for start when the AC power is turned on while pressing the ENTER key. At that time, CD mechanism are also initialized. During the initial operation, the display shows “INITIALIZE” and after that the clock blinks up on display. 1-3 I

24、nitial items and back up data ITEMS # POWEROFF # VOLUME15 # BALANCECENTER MUTINGOFF # EQOFF # EQ. MANUFLAT AMP# EX. BASSON # SRS 3DOFF # INPUT SELTUNER # AUX INPUT0 (-6dB) # REC LEVEL-17 N. B.OFF ECHONONEOFF # 3D LEVEL0 # REF/MANUREF # DEMOON # D-SURROUNDOFFNONE # D-3STEREOOFFNONE # CENTERNORMALNONE

25、 # CEN LEVEL0 (-10dB)NONE # SUR LEVEL0 (-10dB)NONE ITEMS # BANDFM # LAST fLIMIT TUNER# LAST Pch # AUTO/MONOAUTO # PchTEST f # CLOCKAM 12 : 00 # PROG ONAM 12 : 00 CLOCK# PROG OFFAM 12 : 00 TIMER# PRO MODEPLAY # SOURCETUNER # Pch1 # EXEOFF # OTTOFF SLEEPOFF # DIRECTIONFORWARD # RVS MODEp DECK# DOLBY N

26、ROFF A/BB ACTIVE MODESTOP PLAY MODETRACK REPEATOFF CDRANDOMOFF PLAY MODESTOP TIMESINGLE # A/NTSC/PALNONEAUTO VIDEO-CDAUTO PBCNONEON DIGESTNONEOFF MEM STOPNONEOFF 1-4 Mechanism initialization 1-4-1 CD mechanism Disc unclamps (traverse down) Rotary tray rotates (1/3 rotation) If a mechanism error occu

27、rs, “C” is indicated on the display. 1-4-2 DECK mechanism When initial condition becomes NG for the third time, decide the error. The error condition is displayed as X on the display. 1-4-3 Error display C ERR or X ERR # back up data RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 11 RXD-790/V860/V890 7

28、CIRCUIT DESCRIPTION Desti-DSWReceiving frequencyChannelPORT nation3(D23)2(D22) 1(D21) 0(D20) Band rangespace IFRF 47 K10000FM87.5MHz108.0MHz100kHz+10.7MHz25kHz0 AM530kHz1700kHz10kHz+450kHz10kHz0 K20001FM87.5MHz108.0MHz100kHz+10.7MHz25kHz1 AM530kHz1610kHz10kHz+450kHz10kHz0 E10011FM87.5MHz108.0MHz50kH

29、z+10.7MHz25kHz0 AM531kHz1602kHz9kHz+450kHz9kHz0 5. Test mode 5-1 Test mode of the receiver 5-1-1 Setting of the test mode While pressing the INPUT key or Band key, plug the AC power cord in AC outlet. 5-1-2 Canceling of the test mode Unplug the AC power cord. 5-1-3 Condition in test mode POWER ON SE

30、LECTOR AUX (in case of INPUT key) TUNER (in case of BAND key) FL, LED All the fluorescent display indicators and LEDs light. (The all illuminated state is cleared by pressing any main unit key or remocon key. EX. BASS OFF REC LEVEL All position 0dB (REC 80) 5-1-4 Sub clock osculation diagnosis Sub c

31、lock oscillation be diagnosed OK and NG before input test mode. ERR1 : OSC non active ERR2 : Frequency NG. 5-1-5 All RAM clear While pressing 3STEREO key or HIT MASTER key, plug the AC power cord into AC power output, the all RAM cleared. 5-1-6 Basic operation in test mode. (1) The muting during mod

32、e selection is not controlled in the test mode. (2) The REC out level is fixed to 0dB (MAX). (3) The test mode is cancelled when the AC power is turned OFF. (4) The operation of the keys in the test mode, as follows. 5-1-7 The operation of the keys in the test mode. (1) DISP/DEMO key When this key i

33、s pressed in the test mode, all the flu- orescent light off and normal display are indicated cyclically. (2) DISC 13 keys With the selector on AUX, when the DISC 13 keys are operated, the 3D level settings can be made as follows. 1 DISC 1 3D ON level -10 (Min) 2 DISC 2 3D ON level 0 (Center) 3 DISC

34、3 3D ON level +10 (Max) 4. Destination list of tuner DIODE SW : 0 = Without diode (When static, input low) I = With diode (When static, input high) 2. KEY MATRIX 3. TUNER preset frequency Refer to RXD-500/700 service manual (B51-5300-00), if need TUNER preset frequency K1 and K2. KR0KR1KR2KR3 414243

35、44 KEY197 PINB PACKB PLAYSTEREOF REC KEY296 PINA PACKA PLAYSDR REC KEY3 95 PINPOWERA/B/BEATCINPUTPOP KEY4 94 PINEQ. OFFMANU/REFCLASSICROCK KEY5 93 PINDSW3DSW2DSW1DSW0 KEY6 92 PINTEST (RDS)DSW6DSW5DSW4 KEY7 90 PIN (CD)DISC SKIP6 (CD)OPEN/CLOSW KEY8 89 PINTIME DISP4 (CD)7 (CD)DISC3 KEY9 88 PIN7 (DECK)

36、 (DECK) (DECK) (DECK) KEY10 87 PINOTE (DECK)DUBBINGREC/ARM1 (DECK) KEY11 86 PINDISC1REV MODEDOLBY NRDISC2 KEY12 85 PINTUNING UPBANDAUTOBEST/ECHO/A KEY13 84 PINSRS 3D3 STEREOENTERMODE/OTT KEY14 83 PINRESETEX.BASS/PRGDISPLAYSTEREO/BEST KEY15 82 PINTUNING DOWNPRO LOGIC No. of : Port No. of (X14)IC1 u-C

37、OM. RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 14 RXD-790/V860/V890 8 CIRCUIT DESCRIPTION PLL LC72131 EXPANDER IC NJU3711 EXPANDER IC NJU3714D CD MECHANISM UNIT CDM-27 DECK MECHANISM GT-E5000 SYSTEM IC HA12209F PARALLEL-SERIAL TC74HC166AP SELECTOR NJU7313 SYSTEM IC LC75393E KEY MATRIX 13SCAN 4RETURN

38、 SPEANA BA3834S STB RECEIVER SECTIONIC_CLK/DATA CE PH GRID (10) (X14) IC1 (X14) IC2 (X32) IC2 (X32) IC6 (X28) IC1 (X28) IC6 (X32) IC5 (X14) ED1 (X09) IC1 (X09) IC5 (X05) IC2SEGMENT (42) POWER MUTE ST. CLEAR M 3 8 1 9 9 M F - 0 6 9 F P M 3 8 1 9 8 M C A - 8 0 7 F P F I P 1 0 H M W 6 R CD DSP CXD2509Q

39、 FL MAIN u-COM CD DECK EXPANDER SERI PARA EXPANDER SERI PARA PRO LOGIC DOLBY C,S VOL. SEL. ST P.LOG. VIDEO CD -COM VIDEO CD (W02-) CD MECHANISM (CDM-27) DAC 4ch BTL RF SERVO DSP (X32) IC2 (X32) IC1 (X32) IC2 4ch BTL (X32) IC3 RF SERVO (X32) IC1 (X32) IC14 (X32) IC10 (X32) IC6,7,9, CD/VIDEO CD (X08)

40、IC7 (X08) IC4 (X08) IC2 (X08) IC1 DOLBY PROLOGIC (X14) IC5 (3) CD STOP key With the selector on TUNER, when the CD STOP key operated, the preset memory can be changed as 10 steps. 10 20 30 40 00 ( ) (4) AUTO, TUNING UP/DOWN With the selector on something other than TUNER, the E.Q (Flat, Min, Max) se

41、ttings can be made by pressing the AUTO key and the tuning UP DOWN keys. AUTO key E.Q Flat TUNING DOWN keyE.Q Min TUNING UP key E.Q Max (5) CD SKIP UP/DOWN keys With the selector on TUNER, the P. CALL is operat- ed by pressing the skip UP/DOWN keys. SKIP UP key P.CALL up SKIP DOWN key P. CALL down (

42、6) CD OPEN/CLOSE keys With the selector on TUNER, the channel space (emphasis) settings can be mad cyclically by press- ing the OPEN/CLOSE keys with E1 and K2 version. (7) Other keys During the test mode, it can be operated in a special manner that is different from an ordinary operation by using th

43、e keys on the main body, specifically as shown in the following table. TAPE KEY INDICATION OF VOL. VALUE Press mode key in the AUX mode 1 time 2 times BALANCEINPUT LEVEL RVS MODE1L-13 DOLBY NR44 (MID)CENTER-4 A/B86 (MAX)R+2 DUBBING-8 O.T.E-3 6. Main microprocessor M38198MCA-807FP (X14: IC1) : RXD-79

44、0 M38199MF-069FP (X14: IC1) : RXD-V860/V890 6-1 Microprocessor periphery block diagram OPERATION KEYDISCRIPTION CD CENTER LEVEL UP CD 4CENTER LEVEL DOWN TAPE REAR LEVEL UP TAPE 1REAR LEVEL DOWN RXD-790/V890 RXD-790RXD-V860RXD-V890 CDO CD/VIDEO CDOO DOLBY PROLOGICOO RXD-790/V860(k) COVER( 97.11.28 3:

45、55 AM yW 15 RXD-790/V860/V890 9 CIRCUIT DESCRIPTION Pin No.I/ONameDescription 1IBP-INSpeana input (A/D convertor input) 2ICWRotary encoder input B 3ICCWRotary encoder input A 4IA-PHA photo sensor input 5IB-PHB photo sensor input 6IHEAD PHONEHead phone sw inputH : ON L : OFF 7ODOLBY STSurround IC(LV1

46、016/LA2786) strobe 8I/OSEL STSelector IC(NJU7313) strobe 9OIC-DATASelector/PLL/E. Volume/Expander IC (data) 10OIC-CLKSelector/PLL/E. Volume/Expander IC (Clock) 11OE STExpander IC (NJU3711/NJU3713/NJU3714) strobe 12OSANYO CESystem IC(LC75393(/PLL(LC72131)/E. vol(LC7536) CE 13IPLL DOPLL data input 14O

47、DAC STDAC(PCM1717E) strobe 15OC BUSYVCD busy output 16OVCD CLOCKVCD clock 17OC DATAVCD data output 18IM DATAVCD data input 19OCD-CLKCD DSP clock (CXD2509Q) 20OSQCKSub cord clock(CXA 1782BQ, CXD2509Q) 21OCD-DATACD IC DATA 22ISUBQSub code data 23OCD-XLATCD latch output (CXA1782BQ, CXD2509Q) 24ISENSECD sense input (CXA1782BQ, CXD2509Q) 25OPS-LOADPara