Kenwood-KMDX-92-Service-Manual电路原理图.pdf

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1、MD RECEIVERKMD-PS971R/X92SERVICE MANUAL 2000-7 PRINTED IN KOREAB51-7652-00 (K) 3129KMD-PS971R (E)Refer to the service manual “X92-3390-00,0-01_X92-3560-00,X92-3580-00“ (B51-7461-10)for MECHANISM ASSYs information.KMD-X92 (K)The following reference numbers with accessory parts are the same reference

2、numbersused on EXPLODED VIEW and PARTS LIST.KMD-X92DISPKMD-PS971RDISP261292291267215222221797296201DC1272216RM122426626522540%KMD-PS971R/X922BLOCK DIAGRAMCOM+BFM+BAM+BEEPROMDETECTIONPHONEACCSRMPHOTODETECTIONMOTORDRIVER8V AVRMD/SRMCONVERTER14V SW5VSW BU5V AVRP CON.SWMUTE DRIVERPRE OUT AMPLIFIERAUDIO

3、MUTE SWSYSTEM EsPOWER ICIC4IC7SYSTEM u-COMMDCHQ30IC15,16,18IC5IC2TUNERMECHADETECTIONELECTRIC VOLUME/PRE OUTSP-OUTILLUMINAITIONACCP-ANTP-CONBACK UPDECODERRDSIC17IC11EXT. CONTREGULATORDC/DCBOXPANEL u-COMRESET SWRESETVFDREMO G/R SWSPE-ANAIC6DETECTIONIC19NOISESPECTRUM ANALYZER& AGC AMPLIFIERCONTROLEXTER

4、NALDC/DCIC3IC14DC/DCREGMATRIXKEYLOCK SWPANELBPFA1UNITL5,Q48-51CN5CN4AMPLIFIERNOISE CANCELER/MULTIPLEXERHPF&LPF SWQ34-37,53,54 CN1AUDIOPANEL SWQ59PH1 CN7 IC9SWITCHIC20Q5,6P.ONQ3 Q1,2SWQ23-26Q21,22P-ANT.B.U.Q28DETECTIONQ29D6DIMMERQ12AMPLIFIERQ58PHONEJ1PLL CLKCHSERVOLOE-SWLOS-SWM RSTM SDAEJECTEJE-SWM S

5、TOPA MUTEM SCLA8VBU5VRSTREQ CCLKCH-CONDATA HREQ HMDAMFMMUTEMC REQPANELRSTSC REQ MC CLK SC DATARESET SRM SW1 SRM DET SRM SW2RDCK RDDA QUALSDA SCLA8V+B-B+B-BPLL DATAPLL CES-METERSW5VSW5VDATA CBACK UPFACFL+B750mV4500mVCHAM2250mVFM160mV1200mV1200mV213mV (KMD-PS971R)400mV (KMD-X92)RDS OUTFM+BNOISE4500mVM

6、DKMD-X92MODE4500mV4500mV1069mV1715mVKMD-PS971RSRM SUB-SRM SUB+DRIVERMUTEBU5VLOADBU 5VPANEL 5VMD+B MD/SRMP MUTEPRE MUTEKMD-PS971R/X92 (E/K)KMD-PS971R/X923COMPONENT DESCRIPTIONELECTRIC UNIT (X25-848x-xx)REF.FUNCTIONOPERATIONNo.Q1CONTROL SW BETWEEN ED1 to IC1Works when Q5s base level comes “H“.Q2REMOTE

7、 CONTROLLER POWER SWWorks when the base level comes “L“ during power on.Q3BRIGHTNESS CONTROLAdjusts brightness with pulse width.Q5CONTROL SW BETWEEN ED1 to IC1Works when the base level comes “H“.Q6,7ILLUMINATION SWMake illumination-on when the base levels comes “H“.Q8CONTROL SW BETWEEN ED1 to IC1Wor

8、ks when Q5s base level comes “H“.REF.FUNCTIONOPERATIONNo.Q35V SWWorks when the base level comes “L“.Q4AUDIO 8V AVRWorks when Q56s base level comes “H“.Q5,6P.ON 14V SWWork when the base levels come “H“.Q8-11ILLUMINATION SWWorks when Q9s base level comes “H“.Q12DIMMER DETECTIONWorks when the base leve

9、l comes “H“ during illumination comes on.Q13,14DC/DC CONVERTER +B SWWork when Q14s base level comes “H“. Q21,22P-ANT. SWWork when Q22s base level “H“ during FM or AM signal is received.Q23P-CON. SWWorks when Q26s base level comes “H“.Q24,25P-CON. SW PROTECTIONWork when the P-CON. output volume level

10、 comes down.Q26P-CON. SWWorks when the base level comes “H“.Q28BACK-UP DETECTIONWorks when the momentary power down is detected.Q29ACC DETECTIONWorks when ACC is turned off.Q30AUDIO MUTE DRIVERMakes mute turns on when the base level comes “L“.Q32SPECTRUM ANALYZER AGCControls spectrum analyzer level.

11、Q33E-VOL. MUTE SWMakes mute turns on when the base level comes “H“.Q34-37AUDIO MUTE SWMakes mute turns on when the base level comes “H“.Q38SVR SWWorks when momentary power down is detected.Q43,44NOISE DETECTION TIME CONSTANT SWQ43s base comes “L“ during searching, and comes “H“ during tuner signal i

12、s received.Q45K2I WIDE/NARROW SWMakes mode to the forced wide when the base level comes “H“.Q48,49AM +B SWWorks during AM signal is received.Q50,51FM +B SWWorks during FM signal is received.Q52VOLTAGE SWWorks when MD plays.Q53,54AUDIO MUTE SWMakes mute turns on when the base level comes “H“.Q56,57AU

13、DIO 8V AVRWork when Q56s base level comes “H“.Q58EXTERNAL AMPLIFIER CONTROL SWWorks when the base level comes “L“.Q59PANEL SWWorks when the base level comes “L“.SWITCH UNIT (X13-9710-10)KMD-PS971R/X924MICROCOMPUTERS TERMINAL DESCRIPTIONPORTPORT NAMEI/OFUNCTIONOPERATING CONDITIONNo.1CH CONOChanger co

14、ntrol.-2CH MUTEIMute from the changer.-3REQ HOHand shaking request to the changer.-4ILL ONOIllumination.-5MD/SRMOMD or SRM.-6PACK DETIDisc detection.-7LOS SW1ILoading SW detection.“L“ : Loading starts.8MD+BOPower supply for MD.“H“ : SRM mechanism runs in MD mode.9VDD-Power supply.-10X2-Main clock.-1

15、1X1-Main clock.-12VSS-GND.-13XT2-Sub clock.-14XT1-Sub clock.-15RESETIReset.“L“ (3V) : Reset.16CH RSTOReset to the changer.-17R CLKIRDS clock.-18REQ CIHand shaking request from the changer.-19-21N.C.-No connection.-22SC REQORequest from panel -com.-23AVDD-Analogue power supply.-24AVREF 0-Reference vo

16、ltage.-25PHONE(E)IPhone detection.Less than 1V : Tel mute. More than 2.5V : Navigation mute.26SRM SW1ISRM positioning detection.-27NOISE(E)IFM noise detection.-28S METERIFM S-meter detection.-29IF MODEIK2I IF detection.“H“ : Wide. “L“ : Narrow.30N.C.-GND.-31M MUTE RIRch mute request from MD mechanis

17、m.-32M MUTE LILch mute request from MD mechanism.-33AVSS-Analogue GND.-34EX. AMPOExternal amplifier control.-35M RSTOReset to MD mechanism.-36AVREF 1-Reference voltage.-37DATA CIData line from the changer.-38DATA HOData line to the changer.-39CH CLKI/OClock line to the changer.-40SC DATAI/OData line

18、 from -com.-41MC DATAI/OData line to -com.-42MC CLKI/OClock to panel -com.-43M STOPOStop request to MD mechanism.-44BEEPOBeep.-45PLL CEOChip enable to PLL.-46PLL DATAOData line to PLL.-47PLL CLKOClock to PLL.-48LOE SWIDown SW detection.“H“ : Chucking.49EJECTOSW for MD mechanism and MD eject.-50LOADO

19、MD loading.-(X25-) IC1 : -COMKMD-PS971R/X925MICROCOMPUTERS TERMINAL DESCRIPTIONPORTPORT NAMEI/OFUNCTIONOPERATING CONDITIONNo.51N.C.-No connection.-52PAN 5VOPanel ON/OFF.-53MC REQI/OLock SW.-54P RSTOPanel -com reset.-55N.C.-No connection.-56QUALIRDS receiving.-57R DATAIRDS data.-58SRM SUB-OSRM mechan

20、ism sub motor.-59SRM SUB+OSRM mechanism sub motor.-60SRM DETISRM mechanism detection.-61SRM SW2ISRM eject positioning detection.-62FM SDIFM SD.-63N.C.-No connection.-64AFCONoise detection time constant SW.“H“ : Receiving. “L“ : FM/AM seeking or AF searching.65N.C.-No connection.-66WIDEOK2I forced wi

21、de.-67NARROWI/OK2I forced narrow.-68AM+BOAM power supply.-69FM+BOFM power supply.-70,71N.C.-No connection.-72VSS-GND.-73TYPE 0IDestination SW.-74TYPE 1IDestination SW.-75TYPE 2IDestination SW.-76ST TYPE 0IDestination SW.-77ST TYPE 1IDestination SW.-78N.C.-No connection.-79PRE MUTEOPre mute.“L“ : Mom

22、entary power down.80N.C.-No connection.-81VDD-Back-up 5V.-82N.C.-No connection.-83SVROSVR.“H“ : Momentary power down or power off.84N.C.-No connection.-85P MUTEOPower IC mute.-86ANT CONOAntenna control.“H“ : Tuner or TI. “L“ : Other modes.87IC2 SCKOIC2, IC5 and EEPROM clock line.-88DIMMERI“SMALL“ de

23、tection.-89P-ONOPower control.-90ACC DETIACC detection.-91N.C.-No connection.-92P.ONOPower supply for circumference of -com.-93B.U. DETIMomentary power down detection.-94TEST-Test.-95IC2 SDAI/OIC2, IC5 and EEPROM clock line.-96MUTEOMute.-97SW5O5V power supply.-98MS CLOClock line to MD mechanism.-99M

24、S DAI/OData line to MD mechanism.-100N.C.-No connection.-(X25-) IC1 : -COMKMD-PS971R/X926TEST MODE(1) How to enter the test mode1. Reset the unit while holding the “FM“ and preset “6“ keys depressed.2. All indications light up at the moment when the test mode starts.(2) How to cancel from the test m

25、ode1. Reset the unit while holding the preset “6“ key.(Note) The test mode is not canceled by turning ACC OFF, turning power OFF or causing momentary powerdown.(3) FM S-meter voltage adjustment1. Enter the test mode.2. While holding the preset “1“ key depressed, press and hold the preset “6“ key.3.

26、“ADJ OK“ is displayed when the result is OK or “ADJ NG“ is displayed when it is No Good.(4) AM SD voltage writing1. Enter the test mode.2. While holding the preset “1“ key depressed, press and hold the preset “6“ key to write the SD voltage data.(5) Forced Auto / Manual switching of K2I1. Press and

27、hold the TI key in the tuner mode to switch between AUTO and MANUAL.2. The initial status is MANUAL, which is indicated by the lighting of the TI dots.(6) Forced Narrow/Wide switching of K2I1. Press the preset “6“ key in the tuner mode to switch between Forced Narrow and Wide.2. The initial status i

28、s Wide, which is indicated by the lighting of the NEWS dots.(7) MD test mode1. Track jumps to the following tracks in order from left by track-up key pressed.No.7, No.2, No.13, No.23, No.30, No.34, No.7(Returns to the start position).2. Track down key will be one step down than currntly playing trac

29、k No.3. When pressing preset “1“ key, the track jumps to track No.28. When pressing preset “1“ key again, the trackjumps to track No.22.(8) Audio adjustments1. The volume should be set to -10 dB (displayed as “30“).2. The bass/treble and balance/fader controls are set to full boost/full cut and full

30、 front/full rear respectively by sin-gle press of the UP/DOWN key.3. The high-pass filter is set to Through/100Hz/200Hz by each press of the UP key, or to 200Hz/100Hz/Throughby each press of the DOWN key.4. Other adjustments are identical to normal operations.(9) Back-up current measurement1. When t

31、he unit is reset while ACC is off (When the back-up power is on) or when ACC is turned off in the middleof test mode, the MUTE pin turns ON in 2 seconds instead of 15 seconds. (The panel/CD/MD mechanism isnot activated at this time.)7KMD-PS971R/X92TEST MODE(10) Simplified security code clear procedu

32、re (KMD-X92 only)1. During the code request mode, while holding the “DISP“ key depressed, press and hold the volume “UP“ keyfor 3 seconds (so that “-“ disappears).2. Enter “KCAR“ from the remote control unit.Press numeric key “5“ 2 times and press the track “UP“ key (to enter “K“).Press numeric key

33、“2“ 3 times and press the track “UP“ key (to enter “C“).Press numeric key “2“ 1 time and press the track “UP“ key (to enter “A“).Press numeric key “7“ 2 timesand press the track “UP“ key (to enter “R“).3. The security is canceled and the set enters the tuner mode.(11) MASK key writing procedure (Whe

34、n the EEPROM is in the initial status)1. While holding the “FM“ and preset “6“ keys depressed, press “RESET“ to enter the test mode.2. Press and hold the “AUDIO“ key for 1 second to enter the menu mode.3. Press the “FM“ or “AM“ key to select “Mask key“.4. Press the track “UP/DOWN“ key shortly so tha

35、t “TRANSMIT1“ is displayed.5. Point the MASK key to the light sensor and press and hold the key for more than 0.5 second.6. When “TRANSMIT2“ is displayed, press and hold the MASK key again for more than 0.5 second.Note that the first and second counter codes are not compared at this time.7. The writ

36、ing operation is completed when “APPROVED“ is displayed.At this time, the demonstration mode is set and the test mode is canceled.(Note) Leaving the unit for more than 30 minutes without writing the code causes an error and turns power off.(12) Procedure for canceling the MASK key request (when the

37、unit is reset or the back-up power is turned off whilethe MASK key is enabled)1. When the power is supplied and the unit is switched on, “TRANSMIT1“ is displayed and the MASK key requestmode starts.2. Point the MASK key toward the light sensor and press and hold for more than 3 seconds (until the le

38、velindicator indicates the full condition).3. When “TRANSMIT2“ is displayed, press and hold the MASK key again for more than 3 seconds. If“TRANSMIT1“ is displayed now, go back to step “2“ and restart from there again.4. When “APPROVED“ is displayed, the MASK key is enabled and the set is turned on.(

39、13) Procedure for MASK key initialization 1. While holding the “FM“ and preset “6“ keys, press “RESET“ to enter the test mode.2. “TRANSMIT1“ is displayed and the MASK key request mode starts.At this time, the display shows “* *“ in place of “ “.3. Press the MASK key canceling remote control for more

40、 than 3 seconds.4. When “TRANSMIT2“ is displayed, press and hold the MASK key again for more than 3 seconds.5. When “APPROVED“ is displayed, the MASK key is canceled, the demonstration mode is set, the test mode iscanceled.(14) MASK key all-clear procedure1. While holding the “FM“ and preset “6“ key

41、s, press “RESET“ to enter the test mode.2. Press and hold the “AUDIO“ key for more than 1 second to enter the menu mode.3. Press the Track “UP/DOWN“ key to select “Mask key“.8KMD-PS971R/X92TEST MODE4. Press and hold the “FM“ or “AM“ key for more than 2 seconds so that “TRANSMIT1“ is displayed.5. Poi

42、nt the MASK key canceling remote control toward the light sensor and press for more than 3 seconds(until the level indicator indicates the full condition).6. When “TRANSMIT2“ is displayed, press and hold the MASK key again for more than 3 seconds. If“TRANSMIT1“ is displayed now, go back to step “5“

43、and restart from there again.7. When “APPROVED“ is displayed, the EEPROM is cleared entirely and the condition in “(11) MASK keywriting procedure (when the EEPROM is in the initial status)“ returns.ADJUSTMENT (KMD-PS971R only)Item :SeparationInput Setting :98.1MHz / 1KHz, 40KHz dev / Pilot: 6.0KHz d

44、ev / Selector: L or R / 60dB(ANT input)Output Setting :Connect a AC voltmeter to speaker output (J1 of X25)Receiver setting : FM98.1MHz / Forced narrow of the test mode (It is shown on previous pages)Alignment Point :VR1 of X25Align for :Adjust so that the crosstalk from Lch to Rch and Rch to Lch be

45、comes minimum.ABDFHJCEGI2 1357 46R12C8R33R34R35R19R18R8R7R9R11R10R6R2R1R3R5 R4R24R22R21R31R30R25R15R14R13R20R17R16L4C1L3C6C7C5C2C3C4L1X1CP3CP2CP1L2CP4R23FL+BFACKR3 KR2VDDFL GANAP RESETKR1SRCKR4KR5KS4KS3KS1D GNDMC CLKSC REQMC REQKS2OPENSC DLOCKSGOPENRST11EBEBEBBEEBBEEB252650517576100211 514910 18IC2S

46、22S23CN1Q2Q7Q1Q3Q5Q6Q8IC1D4D5D3D1D2S8S7S5D7S2 S1S15S14S16S3S4S13S11S17S18S9S12S10S21S6S20D8S19IC3ED1X13-9710-10 (J74-0983-12) SWITCH UNIT2134613 1441 43EJECTFMMENUSRCCLKDISPAU T O654321AT TRSTR4C7C6R2R1C2C4R3EBEBD3Q1Q2X89-2410-10 (J74-1053-02) DAUGHTER UNITA1D1D2CN1DC/DCC1L1C5C361341567R187C77C520R1

47、06R2R34R37C31C28R39R40R38C14C116R105C58C57R162R537R33C23R31R30R161R538C153C151W1C115C144C145C62R107R558R543R544R524R176 R175R545 R546 R177R178C78C519R15L50R221C133R225R222C137C136R223C134C138R224C120 C118C121C7R8R95R530R531R184R182R183R181C149C59C503R122R123R1C4R125R126C2C146R527C521C73C74C75C76TH1R

48、16R552L3R108C514R600C26W4R147L5C56C54C55C51 1R237R42 R43 R44 R45 R46 R47 R48C87R234L10R189R24R25R71R236R21C80C36C35R129R550C52R61R63R65R62R60R73R72W3R526R523R74C38W2R93R100R102R103R104C512R525R195R14R13C13C37R89R128R4R3R549R36R55R56C79R194R155R228C140C141C142R156R229R230R18R140R139R136C34R78R84R77R1

49、93R97W5/R553C148L2C39R167R168R170 R169C88C25C526R163R164R542R541R158R157C32C40R41R601C50R188R186EBBEEBEBEBBEEB EBEBBEBEEBBEEBEBEBEBBEBEEBEBEBEBBEBEBEBER22814718541151061234Q19Q20Q45D89D16Q22Q25Q26D13Q24Q18D26D90Q5D33Q2IC8Q32Q38D47D49D95IC9IC20D46D44D28Q14Q49Q51Q58D92Q3Q52Q12D21D41D39Q1 1Q42D25Q43Q44Q33D37D35D42D40D38D36D43D29Q8Q56Q59D45D94D48IC6D34IC14Q16Q15Q17IC2Q53Q54Q36 Q37IC16IC1 1D24D23IC18Q6IC19IC17D31IC3IC5Q28D22IC1Q50Q48IC7Q29D6D27Q30Q9Q35Q34IC15D5Q57D17X25-848x-xx (J74-1001-22) ELECTRIC UITD8D20CN8D11D12Q21Q23Q1D19Q4CN1D2D1IC4CN7J1D3Q1