Kenwood-X-92-4030-00-Service-Manual电路原理图.pdf

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1、 2001-12 PRINTED IN JAPANB51-7867-00 (N)3417CD MECHANISM ASSYSERVICE MANUALX92-4030-0xX92-4440-0xDESCRIPTION MECHANISMX92-4030-00 (DXM-6000W)X92-4030-01 (DXM-6001W)X92-4030-02 (DXM-6002W)X92-4030-03 (DXM-6003W)X92-4030-04 (DXM-6004W)X92-4030-05 (DXM-6005W)X92-4440-00 (DXM-6100W)X92-4440-01 (DXM-6101

2、W)X92-4440-02 (DXM-6102W)X92-4440-03 (DXM-6103W)X92-4440-04 (DXM-6104W)X92-4440-05 (DXM-6105W)outer-chassisdumper (X4)floating spring (X4)traverse chassis assy Mecha PCBroller springroller lever assydamper bracketdisc guide assyCONSTRUCTION OF MAJOR PARTS2X92-4030-0xX92-4440-0xNOTE FOR HANDLING MECH

3、ANISM ASSYTrigger LeverPick is under the finger, itmay touch.NGDont touch the lever be-cause the trigger levercomes off.NGDont have the center ofentrance because the discinsertion mouth is trans-formed.NGOK OKPICK UPSPINDLE MOTORSLIDER ASSYROLLEROK OK NG Dont touch in the frame, since grease isappli

4、ed to the parts. Dont applied grease to the roller. Dont touched PICK and SPINDLE MOTOR.X92-4030-0xX92-4440-0x3Mother BoardDOUT 22X1 /CLK 19D.GND 4 DATA 18Pick-Up /MSTOP 10IC1 IC2 /MRST 115 2 /MUTE L 12/MUTE R 13AB Q1 11 IC6CD L-ch 8Vref R-ch 6Ref Q3A+5V A.+8V 9A.GND A.GND 7IC4 5V Q22 Vref RegD.GND2

5、MUTE DRVMUTEBu.+5V 15Q472 Q5Loding H D.GND 142Sled L Loe/Lim SW1S.GND0-01Only8Eje SW 1712Eje SW 21D.GND Los SW 20S7.5V 3S.GND 2Motor 4Lo/Ej 5RF AmpFo CoilServo Processor+MI-Com1Chip ICEFAPCTr CoilS18V SWSpindle MotorLoading & SledMotorMotor DriverVrefD2SW5V SWSWS3S4SW +5VS2Clock16.93MHzLPFBLOCK DIAG

6、RAMCOMPONENTS DESCRIPTIONRef.No. Application/Function Operation/Condition/CompatibilityIC1 CD-RW compatible RF amplifierGeneration of RF and servo error (focusing error, tracking error)signals based on the signals read from the APC circuit andpickup, detection of dropouts, anti-shock, track crossing

7、 and off-track signals, and gain switching for CD-RW.IC2 CD signal processor LSI + Mechanism u-COMFocusing, tracking, sled and spindle servo processing, automatedprocessing (focusing, tracking, gain, offset and balance), digitalsignal processing (DSP, PLL, subcode, CIRC error correction andaudio dat

8、a interpolation), Text function (MN662773kH2), and microcomputer function.IC4 4-CH BTL driverDrive of the focusing coil, tracking coil, sled motor and spindlemotor, plus loading and ejection operations.IC6 Audio active filter Secondary LPFQ1 For APC (Auto Power Control) LD drive.Q2 Q3 SW ON when P-O

9、N = “H“ (when SW +5 V is ON).Q3 A.8V SW ON when P-ON = “H“ (when Q2 is ON).Q4 D.5V SW ON when P-ON = “H“ (when Q5 is ON).Q5 Q4 SW(P-ON) ON when P-ON = “H“.D1 Pickup laser diode protectionD2 D/A converter power supply diode A.8V A.5VD3 For static protectionD4 For forced gain boost (tracking servo)a71

10、CD PLAYER UNIT (X32-5170-0x/X32-5190-0x)*P-ON: Pin 82 of IC2.X92-4030-0xX92-4440-0x4MICROCOMPUTERS TERMINAL DESCRIPTIONa71Mechanism Microcomputer (IC2 : X32-5170-0x, X32-5190-0x)Pin No. Name. I/O Description Processing Operation1 BDO I Dropout signal input. H: Detected. Photodetector signal input 1.

11、2 OFT I Off-track signal input. H: Detected. Photodetector signal input 2.3 /RFDET I RF detection signal input. H: Detected. Photodetector signal input 3.4 VDET I Vibration detection signal input. H: Detected. Photodetector signal input 4.5 LDON O Laser diode ON signal output. H: ON. Photodetector R

12、F signal add input.6 NC - No connection. RF amp filter terminal 1.7 NC - No connection. RF amp filter terminal 2.8 AVSS3 I Analog circuit GND.9 AVDD3 I Analog circuit power supply.10 FBAL O Focusing balance adjustment output. Laser diode monitor input.11 TBAL O Tracking balance adjustment output. La

13、ser diode drive output.12 FE I Focusing error signal input (D/A input).13 NC - No connection. Tracking filter terminal 1.14 NC - No connection. Tracking filter terminal 1.15 TE I Tracking error signal input (analog input).16 NC - No connection. Track cross comparator filter terminal.17 NC - No conne

14、ction.18 NC - No connection. RF signal input (for RF detection).19 RFENV I RF envelope signal input.20 VREF I VREF input.21 ARF I RF signal input (for DSL).22 DRF I DSL bias terminal.23 DSLF I/O DSL loop filter terminal.24 IREF I Reference current input.25 PLLF I/O PLL loop filter terminal.26 PLLF2

15、I/O PLL loop filter characteristic switching terminal.27 VCOF I/O VCO loop filter terminal.28 VCOF2 I/O Digital servo 33.8688 MHz generation (VCO loop filter terminal).29 TRV O Traverse forced feed output.30 TVD O Traverse drive output.31 PC O Spindle motor ON output. L: ON.32 ECM O Spindle motor dr

16、ive output (forced mode output) (D/A output).33 ECS O Spindle motor drive output (servo error signal output).34 KICK O Kick pulse output.35 TRD O Tracking drive output.36 FOD O Focusing drive output.37 TOFS O Tracking offset adjustment output.38 AVDD2 I Analog circuit power supply (for DSL, PLL, AD

17、and DA circuits).39 AVSS2 I Analog circuit GND.40 DVSS2 I Digital circuit GND.41 EFM or CK384 O EFM signal output.When command is executed:16.9344 MHz clock output.42 PCK or DSLB O PLL sampling clock output.When command is executed:DSL balance output.43 /CLDCK O Subcode frame clock signal output.44

18、FCLK O Xtal frame clock signal output.45 IPFLAG O Interpolation flag signal output. H: Interpolated.46 FLAG O Flag signal output.47 TRCRS I Track crossing signal input. Track crossing signal output.48 STOUT O Serial data output for monitor signal (OFT, VDET, BDO, RFDET, etc.)49 STLD O Load signal ou

19、tput for monitor signal.50 SMCK O Bit clock signal output for monitor signal.5X92-4030-0xX92-4440-0xMICROCOMPUTERS TERMINAL DESCRIPTIONPin No. Name. I/O Description Processing Operation51 CSEL IXtal oscillation frequency selection terminal, which is fixed at L.H: 33.8688 MHz. L: 16.9344 MHz.52 TEST1

20、 I Test pin 1. Fixed at L (normal position).53 TEST2 I Test pin 2. Fixed at L (normal position).54 IOSEL I Audio DAC external data input mode selection terminal.55 /NRST I Reset input. L: Reset.56 BCLK O SRDATA bit clock output.57 LRCK O L/R identification signal output.58 SRDATA O Serial data outpu

21、t.59 SUBC O Subcode serial output.60 SBCK I Subcode serial output clock input.61 DQSY O CD-TEXT read permission signal output.62 DEMPH O De-emphasis detection signal output. H: ON.63 TX O Digital audio interface signal output.64 SRDATAIN I SRDATA input/test terminal.65 LRCKIN I LRCK input/SMCK outpu

22、t frequency switching.66 BCLKIN I BCLK input. When not used: VDD.67 DVDD1 I Digital circuit power supply.68 X1 I Xtal oscillator input terminal.69 X2 O Xtal oscillator output terminal.70 DVSS1 I Digital circuit GND.71 XSUB1 I Microcomputer clock input terminal.72 XSUB2 O Microcomputer clock output t

23、erminal.73 DVDD2 I Digital circuit power supply.74 NC O No connection.75 NC O No connection.76 73/74SEL I 73/74 selection port.77 DRV_MUTE O Driver muting control terminal.78 NC O No connection.79 NC O No connection.80 TEST I Test mode switching terminal.81 ASEL I Audio output polarity detection ter

24、minal.82 PON O Audio/digital power supply control terminal.83 SEARCH O Servo IC gain switching control terminal.84 EQCNT O RF amp double-speed switching control terminal.85 SW3 I Limit switch detection terminal.86 /MUTE_L O L-CH analog muting control terminal.87 /MUTE_R O R-CH analog muting control

25、terminal.88 CD_RW O CD-RW control terminal.89 /RST I System reset input terminal.90 MECHASEL I 6000/6010 selection port. L=6000 H=601091 /MSTOP I Standby detection terminal.92 LDCNT O LD control terminal.93 DATA I/O I2C bus data line (communication line with System controller).94 /CLK I/O I2C bus cl

26、ock data line (communication line with System controller).95 HOT I Temperature protection detection terminal.96 VREF+ I A/D converter + power supply.97 OUTR O R-channel audio output.98 AVDD1 IAnalog circuit power supply (for audio output circuits ofboth L and R channels).99 OUTL O L-channel audio ou

27、tput.100 AVSS1 IAnalog circuit GND (for audio output circuits of both Land R channels).X92-4030-0xX92-4440-0x6Centerof rotationProjectionDisc 8cm DiscTrigger armADiscTrigger armPosition pushed by the discSwitch ON!Disc arm(L)Disc arm(R)DiscClaw (A)OPERATION DESCRIPTION1 Disc Loading(1) Turning the l

28、oading switch ON1) When a disc is inserted, the disc arms open to the left andright and the claw below disc arm (L) sets the loadingswitch ON.2) The above starts the motor rotation.(2) Loading the disc1) When the motor starts rotation, the worm gear also startsto turn as shown in the figure.2) The r

29、otation force is transmitted to the gear train.3) When the force is transmitted to the final gear, the rollersrotate to pull in the disc.The disc is pulled in or out when the rollers are pushedagainst the disc guide.2 Operation of Slider (R)(1) Activating the trigger arm1) When the disc is pulled in

30、 by the rollers, the disc edgepushes the trigger arm and rotates it.2) When the disc is an 8cm disc, it is pulled upwards by thetapering on the disc guide. The trigger arm is rotatedwhen the disc pushes the claw (section A) located beforethe trigger arm.When the 8cm disc reaches the loading end posi

31、tion, theroller areas supporting the disc decreases. To prevent thedisc from dropping in this case, the claw is provided with aprojection for supporting the disc.Worm gear MotorRubber rollersDisc INSide viewDisc guideRollerDisc INDisc OUTDisClamper chassisX92-4030-0xX92-4440-0x7(2) Basic constructio

32、n (Initial position ofthe planetary gear mechanism)1) Even after the disc has been inserted,the motor rotated and the gear train alsorotated, slider (R) does not startoperation yet.This is because theplanetary gear mechanism is used andthe carrier gear is locked by the slidermechanism. In this perio

33、d, the planetarygear is in the loose condition.2) When the sun gear is rotating and thecarrier gear is locked, the planetary gearis running idle.(3) Basic construction (Construction ofthe trigger slider and slider (R)The trigger slider is assembled with slider(R) and pushed in the direction of the a

34、rrowby the force of a spring.(4) Operation of slider (R)1) Activating the trigger sliderWhen the trigger arm is rotated by thepressure of the disc, the trigger armpushes the trigger slider.LockedLockedSun gearCarrier gearCarrier gears ribSlider (R)Trigger sliderSpringSlider (R)Centerof rotationTrigg

35、er sliderTrigger sliderTrigger armDiscTrigger armGear teethon the traversechassis2) Rotating (engaging) the planetary gearWhen the trigger slider is moved, it pushes down thewall (section A) of the carrier gear. (Initial rotation of thecarrier gear)This causes the planetary gear, which is attached o

36、n apin of the carrier gear, to move according to the rotationof the carrier gear. When the planetary gear is meshedwith a gear tooth (section B) of the traverse chassis, theplanetary gear starts rotation.The rotation of the planetary gears causes the carriergear to rotate.Planetary gearLoosePlanetar

37、yLooseCarrier gearX92-4030-0xX92-4440-0x83) Activating slider (R)When the carrier gear rotates, its wall (section C) pushesand moves the trigger slider.When the trigger slider is moved, slider (R) is pulled bythe force of spring (section D).Slider (R)(1) Functions activated by slider (R)1) Operation

38、 modesTo play back a CD, it is required to perform a flow of operations as shown below. Pulling the disc in and stopping the roller rotations after it. Moving the clamper downwards so that it can clamp thedisc during playback. (Disc chucking) Moving the rollers that are in contact with the disc.(Low

39、ering the roller lever)2) Coupling conditionsThe parts used for performing the above functions arecoupled with slider (R) as shown below. Float (suspend) the mechanism in order to protect itfrom vehicle vibrations during disc playback. Moving the pickup (optical assy) so that it can reads thedisc si

40、gnals.These series of operations are activated by the movement ofslider (R).Clamper chassis assySlider (R) assyRoller lever assyRoller armDiscSlider (R)3 Flow Until Disc Chucking (Playback Standby Condition)Right sideWhen the trigger slider moves along the longitudinalgrooves on slider (R) till the

41、ends of grooves, the triggerslider itself begins to push and move slider (R).Start pointEnds of longitudinalgroovesSectionspushing slider (R)X92-4030-0xX92-4440-0x9When slider (R) moves, the boss of the roller arm movesalong the groove of slider (R), thereby separating thehelical gear 2 coupled with

42、 it from load gear 2.3) Rotation of rollers during disc loadingAs shown in the following figure, themotor rotation force is transmittedthrough sun gear helical gear 2 load gear 2 to the gear that is coupleddirectly with the roller shaft to rotate therollers and pull in the disc.(2) How to stop the r

43、oller rotationThe boss of the roller arm is engaged witha groove on slider (R).BossGrooveGrooveRollerRotation direction for pulling the disc inDiscSun gearForce transmitted from themotorLoad gear 2Helical gear 2Roller armSlider (R) assyRoller armHelical gear 2Roller armGear shaftSlider (R)GrooveClam

44、per assyPlate spring(3) Operation of the clamper (Disc chucking)1) Engaged conditionThe plate spring attached to the clamper chassis isoriginally engaged with a groove on slider (R).This stops transmission of the force to the rollers so therollers stop.StoppedSlider (R)Load gear 2Helical gear 2X92-4

45、030-0xX92-4440-0x10Centerof rotationSlider (R)ClamperPlate springClamperchassis assyEngaged condition2) Lowering the clamper (for disc chucking)As slider (R) moves, the plate springsection engaged with it moves along itsgroove and lowers the clamper chassisassembly.The following figure shows the flo

46、w ofoperation.2) Lowering the rollers (Disc playbackposition)As slider (R) moves, the roller lever shaftengaged with a groove on slider (R)moves along the groove and lowers therollers.The following figure shows the flow ofoperation.Center of rotationShaftFinal positionRoller leverRollerDiscSliderIn

47、contrast to the downward movement of the rollers, the extremity of the roller lever starts to be raised.2-disc insertionpreventionRollers are separated from the disc.Engaged condition(4) How to lower the rollers1) Disc chucking completion positionWhen the disc in this position, the rollers are locat

48、ed belowthe disc and in contact with it.To rotate the disc for playback, it is required to separatethe rollers from the disc.Disc chucking completion positionThe roller lever extremity comes in the position shown in the figure. Here, it plays a role of stopper for preventing insertion of more than one disc.At the lowest position of the rollersInitial position