Kenwood-KMDX-92-Service-Manual 电路图 维修手册.pdf

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1、MD RECEIVER KMD-PS971R/X92 SERVICE MANUAL 2000-7 PRINTED IN KOREA B51-7652-00 (K) 3129 KMD-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 refe

2、rence numbers used on EXPLODED VIEW and PARTS LIST. KMD-X92 DISP KMD-PS971R DISP 261 292 291 267 215 222 221 797 296 201 DC1 272 216 RM1 224 266 265 225 40% RadioFans.CN 收音机爱 好者资料库 KMD-PS971R/X92 2 BLOCK DIAGRAM COM+B FM+B AM+B EEPROM DETECTION PHONE ACC SRMPHOTO DETECTION MOTOR DRIVER 8V AVR MD/SRM

3、 CONVERTER 14V SW 5VSWBU5V AVR P CON. SW MUTE DRIVER PRE OUT AMPLIFIERAUDIO MUTE SW SYSTEM Es POWER IC IC4 IC7 SYSTEM u-COM MD CH Q30 IC15,16,18 IC5 IC2 TUNER MECHADETECTION ELECTRIC VOLUME/ PRE OUT SP-OUT ILLUMINAITION ACC P-ANT P-CON BACK UP DECODER RDS IC17 IC11 EXT. CONT REGULATOR DC/DC BOX PANE

4、L u-COM RESET SW RESET VFD REMOG/R SW SPE-ANA IC6 DETECTION IC19 NOISE SPECTRUM ANALYZER & AGC AMPLIFIER CONTROL EXTERNAL DC/DC IC3 IC14 DC/DC REG MATRIX KEY LOCK SW PANEL BPF A1 UNIT L5,Q48-51 CN5 CN4 AMPLIFIER NOISE CANCELER/ MULTIPLEXER HPF&LPF SW Q34-37,53,54CN1 AUDIO PANEL SW Q59 PH1CN7IC9 SWIT

5、CH IC20 Q5,6 P.ON Q3Q1,2 SW Q23-26 Q21,22 P-ANT. B.U. Q28 DETECTION Q29 D6 DIMMER Q12 AMPLIFIER Q58 PHONE J1 PLL CLK CH SERVO LOE-SW LOS-SW M RST M SDA EJECT EJE-SW M STOP A MUTE M SCL A8V BU5V RST REQ C CLK CH-CON DATA H REQ H MD AM FM MUTE MC REQ PANEL RST SC REQ MC CLK SC DATA RESET SRM SW1 SRM D

6、ET SRM SW2 RDCK RDDA QUAL SDA SCL A8V +B -B +B -B PLL DATA PLL CE S-METER SW5V SW5V DATA C BACK UP FAC FL+B 750mV 4500mVCH AM 2250mVFM 160mV 1200mV 1200mV 213mV (KMD-PS971R) 400mV (KMD-X92) RDS OUT FM+B NOISE 4500mVMD KMD-X92MODE 4500mV 4500mV 1069mV 1715mV KMD-PS971R SRM SUB- SRM SUB+ DRIVER MUTE B

7、U5V LOAD BU 5V PANEL 5V MD+B MD/SRM P MUTE PRE MUTE KMD-PS971R/X92 (E/K) RadioFans.CN 收音机爱 好者资料库 KMD-PS971R/X92 3 COMPONENT DESCRIPTION ELECTRIC UNIT (X25-848x-xx) REF. FUNCTIONOPERATION No. Q1CONTROL SW BETWEEN ED1 to IC1Works when Q5s base level comes H. Q2REMOTE CONTROLLER POWER SWWorks when the

8、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 IC1Works when Q5s base level comes H. REF.

9、FUNCTIONOPERATION No. 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 level comes H during illumination comes on.

10、 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 comes down. Q26P-CON. SWWorks when the base

11、 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. Q33E-VOL. MUTE SWMakes mute turns on when

12、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 SW Q43s base comes L during searching, and comes H during tuner signal is received. Q45K2I WIDE/NARROW SWMakes mode to

13、 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. Q56,57AUDIO 8V AVRWork when Q56s base level comes H.

14、 Q58EXTERNAL AMPLIFIER CONTROL SWWorks when the base level comes L. Q59PANEL SWWorks when the base level comes L. SWITCH UNIT (X13-9710-10) RadioFans.CN 收音机爱 好者资料库 KMD-PS971R/X92 4 MICROCOMPUTERS TERMINAL DESCRIPTION PORT PORT NAMEI/OFUNCTIONOPERATING CONDITION No. 1CH CONOChanger control.- 2CH MUTE

15、IMute 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.- 11X1-Main c

16、lock.- 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 vol

17、tage.- 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 mecha

18、nism.- 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 DATA

19、I/OData line 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 an

20、d MD eject.- 50LOADOMD loading.- (X25-) IC1 : -COM KMD-PS971R/X92 5 MICROCOMPUTERS TERMINAL DESCRIPTION PORT PORT NAMEI/OFUNCTIONOPERATING CONDITION No. 51N.C.-No connection.- 52PAN 5VOPanel ON/OFF.- 53MC REQI/OLock SW.- 54P RSTOPanel -com reset.- 55N.C.-No connection.- 56QUALIRDS receiving.- 57R DA

21、TAIRDS data.- 58SRM SUB-OSRM mechanism 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

22、.C.-No connection.- 66WIDEOK2I forced wide.- 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.-

23、78N.C.-No connection.- 79PRE MUTEOPre mute.L : Momentary 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 SCK

24、OIC2, IC5 and EEPROM clock line.- 88DIMMERISMALL detection.- 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.- 97

25、SW5O5V power supply.- 98MS CLOClock line to MD mechanism.- 99MS DAI/OData line to MD mechanism.- 100N.C.-No connection.- (X25-) IC1 : -COM KMD-PS971R/X92 6 TEST MODE (1) How to enter the test mode 1. Reset the unit while holding the FM and preset 6 keys depressed. 2. All indications light up at the

26、moment when the test mode starts. (2) How to cancel from the test mode 1. 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 power down. (3) FM S-meter voltage adjustment 1. Enter the test mode. 2. While hold

27、ing the preset 1 key depressed, press and hold the preset 6 key. 3. ADJ OK is displayed when the result is OK or ADJ NG is displayed when it is No Good. (4) AM SD voltage writing 1. Enter the test mode. 2. While holding the preset 1 key depressed, press and hold the preset 6 key to write the SD volt

28、age data. (5) Forced Auto / Manual switching of K2I 1. Press and 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 K2I 1. Press the preset 6 key in the tuner mod

29、e to switch between Forced Narrow and Wide. 2. The initial status is Wide, which is indicated by the lighting of the NEWS dots. (7) MD test mode 1. 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 positi

30、on). 2. Track down key will be one step down than currntly playing track No. 3. When pressing preset 1 key, the track jumps to track No.28. When pressing preset 1 key again, the track jumps to track No.22. (8) Audio adjustments 1. The volume should be set to -10 dB (displayed as 30). 2. The bass/tre

31、ble and balance/fader controls are set to full boost/full cut and full 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/Through by each press of the DOWN key. 4. Other adjustments a

32、re identical to normal operations. (9) Back-up current measurement 1. When the unit is reset while ACC is off (When the back-up power is on) or when ACC is turned off in the middle of test mode, the MUTE pin turns ON in 2 seconds instead of 15 seconds. (The panel/CD/MD mechanism is not activated at

33、this time.) 7 KMD-PS971R/X92 TEST MODE (10) Simplified security code clear procedure (KMD-X92 only) 1. During the code request mode, while holding the DISP key depressed, press and hold the volume UP key for 3 seconds (so that - disappears). 2. Enter KCAR from the remote control unit. Press numeric

34、key 5 2 times and press the track UP key (to enter K). Press numeric key 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 times and press the track UP key (to enter R). 3. The security is canceled and the set

35、enters the tuner mode. (11) MASK key writing procedure (When 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

36、. 4. Press the track UP/DOWN key shortly so that 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 c

37、odes are not compared at this time. 7. The writing 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) Procedu

38、re for canceling the MASK key request (when the unit is reset or the back-up power is turned off while the MASK key is enabled) 1. When the power is supplied and the unit is switched on, TRANSMIT1 is displayed and the MASK key request mode starts. 2. Point the MASK key toward the light sensor and pr

39、ess and hold for more than 3 seconds (until the level indicator 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

40、MASK key is enabled and the set is turned on. (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

41、key canceling remote control for more 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 is canceled. (14) MASK key all-clear procedure 1. Whi

42、le holding the FM and preset 6 keys, 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. 8 KMD-PS971R/X92 TEST MODE 4. Press and hold the FM or AM key for more than 2 seconds so that TRA

43、NSMIT1 is displayed. 5. Point 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

44、 now, go back to step 5 and restart from there again. 7. When APPROVED is displayed, the EEPROM is cleared entirely and the condition in (11) MASK key writing procedure (when the EEPROM is in the initial status) returns. ADJUSTMENT (KMD-PS971R only) Item : Separation Input Setting : 98.1MHz / 1KHz,

45、40KHz dev / Pilot: 6.0KHz dev / 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 X25 Align for : Adjust so that the crosstalk

46、 from Lch to Rch and Rch to Lch becomes minimum. ABDFHJCEGI 2 1 3 5 7 4 6 R12 C8 R33 R34 R35 R19 R18 R8 R7 R9 R11 R10 R6 R2 R1 R3 R5 R4 R24 R22 R21 R31 R30 R25 R15 R14 R13 R20 R17 R16 L4 C1 L3 C6 C7 C5 C2 C3 C4 L1 X1 CP3 CP2 CP1 L2 CP4 R23 FL+B FAC KR3 KR2 VDD FL G ANA P RESET KR1 SRC KR4 KR5 KS4 KS

47、3 KS1 D GND MC CLK SC REQ MC REQ KS2 OPEN SC D LOCK SG OPEN RST 1 1 E B E B E B B E E B B EE B 25 26 50 5175 76 100 2 115 14 9 1018 IC2 S22 S23 CN1 Q2 Q7 Q1 Q3 Q5 Q6 Q8 IC1 D4 D5 D3 D1D2 S8 S7 S5 D7 S2S1 S15 S14 S16 S3 S4 S13S11 S17 S18 S9S12S10 S21 S6 S20 D8 S19 IC3 ED1 X13-9710-10 (J74-0983-12) SW

48、ITCH UNIT 21 34 61314 4143 EJECT FM MENU SRC CLKDISPAUTO654321ATT RST R4 C7 C6 R2 R1 C2 C4 R3 E B EB D3 Q1 Q2 X89-2410-10 (J74-1053-02) DAUGHTER UNIT A1 D1 D2 CN1 DC/DC C1 L1 C5 C36 1 341 567 R187 C77 C520 R106 R2 R34 R37 C31 C28 R39 R40 R38 C14 C116 R105 C58 C57 R162 R537 R33 C23 R31 R30 R161 R538

49、C153 C151 W1 C115 C144 C145 C62 R107 R558 R543 R544 R524 R176 R175 R545 R546 R177 R178 C78 C519 R15 L50 R221 C133 R225 R222 C137 C136 R223 C134 C138 R224 C120 C118 C121 C7 R8 R95 R530 R531 R184 R182 R183 R181 C149 C59 C503 R122 R123 R1 C4 R125 R126 C2 C146 R527 C521 C73 C74 C75 C76 TH1 R16 R552 L3 R108 C514 R600 C26 W4 R147 L5 C56 C54 C55 C511 R237 R42 R43 R44 R45 R46 R47 R48 C87 R234 L10 R189 R24 R25 R71 R236 R21 C80 C36 C35 R129 R550 C52 R61 R63 R65 R62 R60 R73 R72 W3 R526 R523 R74 C38 W2 R93 R100 R102 R103 R104 C512 R525 R195 R14 R13 C13 C37 R89 R128 R4 R3 R549