Kenwood-X-92-4450-00-Service-Manual电路原理图.pdf

© 2002-1 PRINTED IN JAPANB51-7889-00 (N) 3415CD MECHANISM ASSYSERVICE MANUALX92-4430-0xX92-4450-0xDESCRIPTION MECHANISMX92-4430-00 (DXM-6010W)X92-4430-01 (DXM-6011W)X92-4430-02 (DXM-6012W)X92-4430-03 (DXM-6013W)X92-4450-00 (DXM-6110W)X92-4450-01 (DXM-6111W)X92-4450-02 (DXM-6112W)X92-4450-03 (DXM-6113W)outer-chassisdumper (X4)floating spring (X4)traverse chassis assy Mecha PCBroller springroller lever assydamper bracketdisc guide assyCONSTRUCTION OF MAJOR PARTS2X92-4430-0xX92-4450-0xNOTE FOR HANDLING MECHANISM 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 isapplied to the parts. Dont applied grease to the roller. Dont touched PICK and SPINDLE MOTOR.X92-4430-0xX92-4450-0x3EFACBTR COILFO COILAPC1 CHIP ICSERVOMI-COMIC2Q116.93MHzCLOCKX1DRIVERMOTORIC4PROCESSORSPINDLEMOTORMOTOR& SLEDLPFIC68V SWQ3Q2SWS3S4S1S2D. GND(0-01)ONLYRF AMPIC1LOADINGREF5V REGD2S. GNDA. GNDD. GNDSLEDLOADINGQ5SW5V SWQ4D. GNDPICK-UPMOTHER BOARD6VREFL-chR-chA. GNDA. +8VD. GNDBU. +5VLOE/LIM SW8EJE SW12EJE SWLOS SWS7.5VLO/EJMOTORS. GNDVREFVREF227DRV MUTEMUTEDOUTDATA42CLKMSTOPMRSTMUTE LMUTE R22 HL11D+5V244312222311108917191618151413122021BLOCK DIAGRAMCOMPONENTS DESCRIPTIONRef.No. Component Name Application/Function Operation/Condition/CompatibilityGeneration of RF signal based on the sig-nals from the APC circuit and pickup, andgeneration of servo error (focusing errorand tracking error) signals.Detection of dropout, anti-shock, trackcrossing and off-track conditions, includedgain control function during CD-RW.Focusing, tracking, sled and spindle servoprocessing. Automatic adjustment (focus-ing, tracking, gain, offset and balance) oper-ations. Digital signal processing (DSP, PLL,sub-codes, CIRC error correction, audiodata interpolaration) operations, andMicrocomputer function.Focusing, tracking, sled and spindle servoprocessing. Automatic adjustment (focus-ing, tracking, gain, offset and balance) oper-ations. Digital signal processing (DSP, PLL,sub-codes, CIRC error correction, audiodata interpolaration) operations, includedCD-text decoder and Microcomputer func-tion.Focusing coil, tracking coil, spindle motorand sled motor driver, disc loading andeject operation.2nd low pass filter for audio signalsLD power controlWhen D.5V SW is turned on, Q2 and Q3are turned on, and A.+8V is supplied to lowpass filter circuit and D/A converter.When PON goes Hi, Q4 and Q5 are turnedon, and BU+5V is supplied to microproces-sor peripheral circuit, IC1 and the pickup.a71CD PLAYER UNIT (X32-5180-0X, X32-5200-0X)IC1IC2IC2IC4IC6Q1Q2Q3Q4Q5AN22000AAMN662774KJ2(X32-5180-0X)MN662773KH2(X32-5200-0X)BA5824FPNJM4580M1MCH6101DTC124EUADTA143XUA2SA1362(Y)DTC124EUARF amplifier adapted for CD-RWCD signal processor bult-in MI-COM.CD signal processor bult-in MI-COM.4CH BTL driverLow pass filterAPCA.8V SWD.5V SWX92-4430-0xX92-4450-0x4MICROCOMPUTER'S TERMINAL DESCRIPTIONa71IC2(CD PLAYER UNIT : X32-5180-0X, X32-5200-0X)Pin No. Pin Name I/O Description Processing Operation1 BDO I Dropout signal input Hi : Dropout detected2 OFT I Off-track signal input Hi : Off-track detected3 /RFDET I RF detection input Hi : RF signal detected4 VDET I Vibration detection input Hi : Vibration detected5 LDON O Laser diode ON signal output Hi : Laser diode ON6,7 NC - Not used (N.C.)8 AVSS3 - Ground connection terminal for analogue circuits Connected to GND lines.9 AVDD3 - Positive power supply connection terminal for analogue circuits Connected to BU 5V lines.10 FBAL O Focusing balance adjustment output11 TBAL O Tracking balance adjustment output12 FE I Focusing error signal input13,14 NC - Not used (N.C.)15 TE I Tracking error signal input16-18 NC - Not used (N.C.)19 RFENV I RF envelope signal input20 VREF I VREF input terminal21 ARF I RF signal input (for DSL)22 DRF I DSL bias terminal23 DSLF I/O DSL loop filter terminal24 IREF I Reference current input terminal25 PLLF I/O PLL loop filter terminal26 PLLF2 I/O PLL loop filter characteristic switching terminal27 VCOF I/O VCO loop filter terminal28 VCOF2 I/O VCO loop filter terminal Digital servo 33.8688MHz generation29 TRV O Traverse forced feed output30 TVD O Traverse drive output31 PC O Spindle motor ON/OFF output (Lo : ON) Not used (N.C.)32 ECM O Spindle motor drive output (forced mode output)33 ECS O Spindle motor drive output34 KICK O Kick pulse output35 TRD O Tracking drive output36 FOD O Focusing drive output37 TOFS O Tracking off-set adjustment output38 AVDD2 -Positive power supply connection terminal for analogue circuits(for DSL, PLL, AD, DA)Connected to BU 5V lines.39 AVSS2 -Ground connection terminal for analogue circuits (for DSL, PLL, AD, DA)Connected to GND lines.40 DVSS2 - Ground connection terminal for digital circuits Connected to GND lines.41 EFM or CK384 O EFM signal output Not used (N.C.)42 PCK or DSLB O PLL sampling clock output43 /CLDCK O Sub-code frame clock signal output Not used (N.C.)44 FCLK O Crystal frame clock signal output Not used (N.C.)45 IPFLAG O Interpolation flag signal output (Hi : Interpolated) Not used (N.C.)46 FLAG O Flag signal output Not used (N.C.)47 TRCRS I Track crossing signal input48 STOUT O Serial data output for monitor signal Not used (N.C.)49 STLD O Load output for monitor signal Not used (N.C.)50 SMCK O Bit clock signal output for monitor signal Not used (N.C.)51 CSEL I Crystal oscillation frequency selection terminal Hi : 33.8688MHz, Lo : 16.9344MHz52 TEST1 I test terminal 1 Not used (Connected to GND lines)53 TEST2 I test terminal 2 Not used (Connected to GND lines)54 IOSEL I Audio DAC data input mode selection terminal Hi: External data, Lo: Internal data55 NRST I Reset input (Lo: Reset) Not used(Connected to BU 5V lines)56 BCLK O Bit clock output for SRDATA Not used (N.C.)57 LRCK O L/R identification signal output Not used (N.C.)58 SRDATA O Serial data output Not used (N.C.)59 SUBC O Sub-code serial output Not used (N.C.)60 SBCK I Clock input for Sub-code serial output Not used (Connected to GND lines)61 DQSY O CD-TEXT read permission signal output Not used (N.C.)62 DEMPH O De-emphasis detection signal output (Hi : ON) Not used (N.C.)63 TX O Digital audio interface signal output64 PSEL I SRDATA input/Test terminal Not used (Connected to GND lines)65 MSEL I LRCK input/SMCK output frequency switching Not used (Connected to GND lines)66 SSEL I BCLK input Not used (Connected to BU 5V lines)67 DVDD1 - Positive power supply connection terminal for digital circuits Connected to BU 5V lines.68 X1 I Crystal oscillation circuit connection terminal69 X2 O Crystal oscillation circuit connection terminal70 DVSS - Ground connection terminal for digital circuits Connected to GND lines.71 XSUB1 I Microprocessor clock input terminal Not used (Connected to GND lines)72 XSUB2 O Microprocessor clock output terminal Not used (N.C.)73 DVDD2 - Positive power supply connection terminal for digital circuits Connected to BU 5V lines.74,75 NC O Not used(N.C.)76 73/74SEL I 73/74 selection terminalHi : CD-TEXT OFF (DXM-601xW)Lo : CD-TEXT ON (DXM-611xW)77 DRV MUTE O Driver muting control terminalLo : Spindle motor, focusingactuator and tracking actuatoroutputs OFF78,79 NC O Not used (N.C.)80 TEST I Test mode switching terminal Not used (Connected to GND lines)81 ASEL I Audio output polarity detection terminal Hi : Non inverted, Lo : Inverted82 PON O Audio/digital power supply control terminal Hi : Power ON83 SEARCH O Servo IC gain switching control terminal Hi : Search, Lo : Normal operation84 EQCNT O RF amplifier doable-speed switching control terminal Not used (N.C.)85 SW3 I Limit switch detection terminal Hia161Lo : Pickup most inner position86 /AMUTE L O L Ch. analogue muting control terminal Lo : Muting requested87 /AMUTE R O R Ch. analogue muting control terminal Lo : Muting requested88 CD-RW O CD-RW control terminal Hi : CD-RW, Lo : Normal operation89 /RST I System reset input terminal Lo : System reset90 MECHASEL I 6000/6010 selection terminal Lo : 6000 series, Hi : 6010 series 91 /MSTOP I Standby detection terminal Hi : Operation mode, Lo : Stop mode92 LDCNT O LD control terminal Hi : LD ON, Lo : LD OFF93 DATA I/O I2C bus data line (communication line with System microprocessor)94 /CLK I/O I2C bus clock line (communication line with System microprocessor)95 HOT I Temperature protection detection terminal Not used (Connected to GND lines)96 AVREF - A/D converter reference voltage connection terminal Connected to BU 5V lines.97 OUT R O R Ch. Audio output98 AVDD1 - A/D converter positive power supply connection terminal Connected to analogue 5V lines.99 OUT L O L Ch. Audio output100 AVSS1 - A/D converter ground connection terminal Connected to GND lines.5X92-4430-0xX92-4450-0xMICROCOMPUTER'S TERMINAL DESCRIPTIONPin No. Pin Name I/O Description Processing Operation6Centerof 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 loading 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 rotation 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 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 position, 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 chassisX92-4430-0xX92-4450-0x7(2) Basic construction (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 period, 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 arrowby 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 gear's ribSlider (R)Trigger sliderSpringSlider (R)Centerof rotationTrigger 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 on 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 gearLoosePlanetaryLooseCarrier gearX92-4430-0xX92-4450-0x83) 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 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.(Lowering 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 ass'y) so that it can reads thedisc signals.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 ends of grooves, the triggerslider itself begins to push and move slider (R).Start pointEnds of longitudinalgroovesSectionspushing slider (R)X92-4430-0xX92-4450-0x9When slider (R) moves, the boss of the roller arm movesalong the groove of slider (R), thereby separating thehelical gear 2 coupled with 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 roller 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)GrooveClamper 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 2X92-4430-0xX92-4450-0x10Centerof 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 flow 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 contrast to the downward movement of the rollers, the extremity of the roller lever starts to be raised.2-disc insertionpreven