Kenwood-X92_4450_0x-cd-sm 电路图 维修手册.pdf

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1、 2002-1 PRINTED IN JAPAN B51-7889-00 (N) 3415 CD MECHANISM ASSY SERVICE MANUAL X92-4430-0 x X92-4450-0 x DESCRIPTION MECHANISM X92-4430-00 (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) X92-4

2、450-03 (DXM-6113W) outer-chassis dumper (X4) floating spring (X4) traverse chassis assy Mecha PCB roller spring roller lever assy damper bracket disc guide assy CONSTRUCTION OF MAJOR PARTS RadioFans.CN 收音机爱 好者资料库 2 X92-4430-0 x X92-4450-0 x NOTE FOR HANDLING MECHANISM ASSY Trigger Lever Pick is unde

3、r the finger, it may touch.NG Dont touch the lever be- cause the trigger lever comes off. NG Dont have the center of entrance because the disc insertion mouth is trans- formed. NG OKOK PICK UP SPINDLE MOTOR SLIDER ASSY ROLLER OKOKNG Dont touch in the frame, since grease is applied to the parts. Dont

4、 applied grease to the roller. Dont touched PICK and SPINDLE MOTOR. RadioFans.CN 收音机爱 好者资料库 X92-4430-0 x X92-4450-0 x 3 EF A C B TR COIL FO COIL APC 1 CHIP IC SERVO MI-COM IC2 Q1 16.93MHz CLOCK X1 DRIVER MOTOR IC4 PROCESSOR SPINDLE MOTOR MOTOR & SLED LPF IC6 8V SW Q3 Q2 SW S3 S4 S1 S2 D. GND (0-01)

5、ONLY RF AMP IC1 LOADING REF 5V REG D2 S. GND A. GND D. GND SLED LOADING Q5 SW 5V SW Q4 D. GND PICK-UP MOTHER BOARD 6 VREF L-ch R-ch A. GND A. +8V D. GND BU. +5V LOE/LIM SW 8EJE SW 12EJE SW LOS SW S7.5V LO/EJ MOTOR S. GND VREF VREF 2 2 7 DRV MUTEMUTE DOUT DATA 4 2 CLK MSTOP MRST MUTE L MUTE R 2 2H L

6、11 D+5V 24 4 3 1 2 22 23 11 10 8 9 17 19 16 18 15 14 13 12 20 21 BLOCK DIAGRAM COMPONENTS DESCRIPTION Ref.No.Component NameApplication/FunctionOperation/Condition/Compatibility Generation of RF signal based on the sig- nals from the APC circuit and pickup, and generation of servo error (focusing err

7、or and tracking error) signals. Detection of dropout, anti-shock, track crossing and off-track conditions, included gain control function during CD-RW. Focusing, tracking, sled and spindle servo processing. Automatic adjustment (focus- ing, tracking, gain, offset and balance) oper- ations. Digital s

8、ignal processing (DSP, PLL, sub-codes, CIRC error correction, audio data interpolaration) operations, and Microcomputer function. Focusing, tracking, sled and spindle servo processing. Automatic adjustment (focus- ing, tracking, gain, offset and balance) oper- ations. Digital signal processing (DSP,

9、 PLL, sub-codes, CIRC error correction, audio data interpolaration) operations, included CD-text decoder and Microcomputer func- tion. Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and eject operation. 2nd low pass filter for audio signals LD power control When D.5V

10、 SW is turned on, Q2 and Q3 are turned on, and A.+8V is supplied to low pass filter circuit and D/A converter. When PON goes Hi, Q4 and Q5 are turned on, and BU+5V is supplied to microproces- sor peripheral circuit, IC1 and the pickup. GCD PLAYER UNIT (X32-5180-0X, X32-5200-0X) IC1 IC2 IC2 IC4 IC6 Q

11、1 Q2 Q3 Q4 Q5 AN22000AA MN662774KJ2 (X32-5180-0X) MN662773KH2 (X32-5200-0X) BA5824FP NJM4580M1 MCH6101 DTC124EUA DTA143XUA 2SA1362(Y) DTC124EUA RF amplifier adapted for CD-RW CD signal processor bult-in MI-COM. CD signal processor bult-in MI-COM. 4CH BTL driver Low pass filter APC A.8V SW D.5V SW Ra

12、dioFans.CN 收音机爱 好者资料库 X92-4430-0 x X92-4450-0 x 4 MICROCOMPUTERS TERMINAL DESCRIPTION GIC2(CD PLAYER UNIT : X32-5180-0X, X32-5200-0X) Pin No.Pin NameI/ODescriptionProcessing Operation 1BDOIDropout signal inputHi : Dropout detected 2OFTIOff-track signal inputHi : Off-track detected 3/RFDETIRF detecti

13、on inputHi : RF signal detected 4VDETIVibration detection inputHi : Vibration detected 5LDONOLaser diode ON signal outputHi : Laser diode ON 6,7NC-Not used (N.C.) 8AVSS3-Ground connection terminal for analogue circuits Connected to GND lines. 9AVDD3-Positive power supply connection terminal for anal

14、ogue circuits Connected to BU 5V lines. 10FBALOFocusing balance adjustment output 11TBALOTracking balance adjustment output 12FEIFocusing error signal input 13,14NC-Not used (N.C.) 15TEITracking error signal input 16-18NC-Not used (N.C.) 19RFENVIRF envelope signal input 20VREFIVREF input terminal 21

15、ARFIRF signal input (for DSL) 22DRFIDSL bias terminal 23DSLFI/ODSL loop filter terminal 24IREFIReference current input terminal 25PLLFI/OPLL loop filter terminal 26PLLF2I/OPLL loop filter characteristic switching terminal 27VCOFI/OVCO loop filter terminal 28VCOF2I/OVCO loop filter terminalDigital se

16、rvo 33.8688MHz generation 29TRVOTraverse forced feed output 30TVDOTraverse drive output 31PCOSpindle motor ON/OFF output (Lo : ON)Not used (N.C.) 32ECMOSpindle motor drive output (forced mode output) 33ECSOSpindle motor drive output 34KICKOKick pulse output 35TRDOTracking drive output 36FODOFocusing

17、 drive output 37TOFSOTracking off-set adjustment output 38AVDD2- Positive power supply connection terminal for analogue circuits (for DSL, PLL, AD, DA) Connected to BU 5V lines. 39AVSS2- Ground connection terminal for analogue circuits (for DSL, PLL, AD, DA) Connected to GND lines. 40DVSS2-Ground co

18、nnection terminal for digital circuitsConnected to GND lines. 41EFM or CK384OEFM signal outputNot used (N.C.) 42PCK or DSLBOPLL sampling clock output 43/CLDCKOSub-code frame clock signal outputNot used (N.C.) 44FCLKOCrystal frame clock signal outputNot used (N.C.) 45IPFLAGOInterpolation flag signal

19、output (Hi : Interpolated)Not used (N.C.) 46FLAGOFlag signal outputNot used (N.C.) 47TRCRSITrack crossing signal input 48STOUTOSerial data output for monitor signalNot used (N.C.) 49STLDOLoad output for monitor signalNot used (N.C.) 50SMCKOBit clock signal output for monitor signalNot used (N.C.) 51

20、CSELICrystal oscillation frequency selection terminalHi : 33.8688MHz, Lo : 16.9344MHz 52TEST1Itest terminal 1Not used (Connected to GND lines) 53TEST2Itest terminal 2Not used (Connected to GND lines) 54IOSELIAudio DAC data input mode selection terminalHi: External data, Lo: Internal data 55NRSTIRese

21、t input (Lo: Reset)Not used(Connected to BU 5V lines) 56BCLKOBit clock output for SRDATANot used (N.C.) 57LRCKOL/R identification signal outputNot used (N.C.) 58SRDATAOSerial data outputNot used (N.C.) 59SUBCOSub-code serial outputNot used (N.C.) 60SBCKIClock input for Sub-code serial outputNot used

22、 (Connected to GND lines) 61DQSYOCD-TEXT read permission signal outputNot used (N.C.) 62DEMPHODe-emphasis detection signal output (Hi : ON)Not used (N.C.) 63TXODigital audio interface signal output 64PSELISRDATA input/Test terminalNot used (Connected to GND lines) 65MSELILRCK input/SMCK output frequ

23、ency switchingNot used (Connected to GND lines) 66SSELIBCLK inputNot used (Connected to BU 5V lines) 67DVDD1-Positive power supply connection terminal for digital circuitsConnected to BU 5V lines. 68X1ICrystal oscillation circuit connection terminal 69X2OCrystal oscillation circuit connection termin

24、al 70DVSS-Ground connection terminal for digital circuitsConnected to GND lines. 71XSUB1IMicroprocessor clock input terminalNot used (Connected to GND lines) 72XSUB2OMicroprocessor clock output terminalNot used (N.C.) 73DVDD2-Positive power supply connection terminal for digital circuitsConnected to

25、 BU 5V lines. 74,75NCONot used(N.C.) 7673/74SELI73/74 selection terminal Hi : CD-TEXT OFF (DXM-601xW) Lo : CD-TEXT ON (DXM-611xW) 77DRV MUTEODriver muting control terminal Lo : Spindle motor, focusing actuator and tracking actuator outputs OFF 78,79NCONot used (N.C.) 80TESTITest mode switching termi

26、nalNot used (Connected to GND lines) 81ASELIAudio output polarity detection terminalHi : Non inverted, Lo : Inverted 82PONOAudio/digital power supply control terminal Hi : Power ON 83SEARCHOServo IC gain switching control terminalHi : Search, Lo : Normal operation 84EQCNTORF amplifier doable-speed s

27、witching control terminalNot used (N.C.) 85SW3ILimit switch detection terminalHiLo : Pickup most inner position 86/AMUTE LOL Ch. analogue muting control terminalLo : Muting requested 87/AMUTE ROR Ch. analogue muting control terminalLo : Muting requested 88CD-RWOCD-RW control terminalHi : CD-RW, Lo :

28、 Normal operation 89/RSTISystem reset input terminalLo : System reset 90MECHASELI6000/6010 selection terminalLo : 6000 series, Hi : 6010 series 91/MSTOPIStandby detection terminalHi : Operation mode, Lo : Stop mode 92LDCNTOLD control terminalHi : LD ON, Lo : LD OFF 93DATAI/OI2C bus data line (commun

29、ication line with System microprocessor) 94/CLKI/OI2C bus clock line (communication line with System microprocessor) 95HOTITemperature protection detection terminalNot used (Connected to GND lines) 96AVREF-A/D converter reference voltage connection terminalConnected to BU 5V lines. 97OUT ROR Ch. Aud

30、io output 98AVDD1-A/D converter positive power supply connection terminalConnected to analogue 5V lines. 99OUT LOL Ch. Audio output 100AVSS1-A/D converter ground connection terminalConnected to GND lines. 5 X92-4430-0 x X92-4450-0 x MICROCOMPUTERS TERMINAL DESCRIPTION Pin No.Pin NameI/ODescriptionPr

31、ocessing Operation 6 Center of rotation Projection Disc 8cm Disc Trigger arm A Disc Trigger arm Position pushed by the disc Switch ON! Disc arm(L) Disc arm(R) Disc Claw (A) OPERATION DESCRIPTION 1 Disc Loading (1) Turning the loading switch ON 1) When a disc is inserted, the disc arms open to the le

32、ft and right and the claw below disc arm (L) sets the loading switch ON. 2) The above starts the motor rotation. (2) Loading the disc 1) When the motor starts rotation, the worm gear also starts to turn as shown in the figure. 2) The rotation force is transmitted to the gear train. 3) When the force

33、 is transmitted to the final gear, the rollers rotate to pull in the disc. The disc is pulled in or out when the rollers are pushed against the disc guide. 2 Operation of Slider (R) (1) Activating the trigger arm 1) When the disc is pulled in by the rollers, the disc edge pushes the trigger arm and

34、rotates it. 2) When the disc is an 8cm disc, it is pulled upwards by the tapering on the disc guide. The trigger arm is rotated when the disc pushes the claw (section A) located before the trigger arm. When the 8cm disc reaches the loading end position, the roller areas supporting the disc decreases

35、. To prevent the disc from dropping in this case, the claw is provided with a projection for supporting the disc. Worm gearMotor Rubber rollers Disc IN Side view Disc guide Roller Disc IN Disc OUT Dis Clamper chassis X92-4430-0 x X92-4450-0 x 7 (2) Basic construction (Initial position of the planeta

36、ry gear mechanism) 1) Even after the disc has been inserted, the motor rotated and the gear train also rotated, slider (R) does not start operation yet.This is because the planetary gear mechanism is used and the carrier gear is locked by the slider mechanism. In this period, the planetary gear is i

37、n the loose condition. 2) When the sun gear is rotating and the carrier gear is locked, the planetary gear is running idle. (3) Basic construction (Construction of the trigger slider and slider (R) The trigger slider is assembled with slider (R) and pushed in the direction of the arrow by the force

38、of a spring. (4) Operation of slider (R) 1) Activating the trigger slider When the trigger arm is rotated by the pressure of the disc, the trigger arm pushes the trigger slider. Locked Locked Sun gear Carrier gear Carrier gears rib Slider (R) Trigger slider Spring Slider (R) Center of rotation Trigg

39、er slider Trigger slider Trigger arm Disc Trigger arm Gear teeth on the traverse chassis 2) Rotating (engaging) the planetary gear When the trigger slider is moved, it pushes down the wall (section A) of the carrier gear. (Initial rotation of the carrier gear) This causes the planetary gear, which i

40、s attached on a pin of the carrier gear, to move according to the rotation of the carrier gear. When the planetary gear is meshed with a gear tooth (section B) of the traverse chassis, the planetary gear starts rotation. The rotation of the planetary gears causes the carrier gear to rotate. Planetar

41、y gear Loose P l a n e t a r y Loose Carrier gear X92-4430-0 x X92-4450-0 x 8 3) Activating slider (R) When the carrier gear rotates, its wall (section C) pushes and moves the trigger slider. When the trigger slider is moved, slider (R) is pulled by the force of spring (section D). Slider (R) (1) Fu

42、nctions activated by slider (R) 1) Operation modes To 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 the disc during playback. (Disc chucking) Moving the

43、rollers that are in contact with the disc. (Lowering the roller lever) 2) Coupling conditions The parts used for performing the above functions are coupled with slider (R) as shown below. Float (suspend) the mechanism in order to protect it from vehicle vibrations during disc playback. Moving the pi

44、ckup (optical assy) so that it can reads the disc signals. These series of operations are activated by the movement of slider (R). Clamper chassis assy Slider (R) assy Roller lever assy Roller armDisc Slider (R) 3 Flow Until Disc Chucking (Playback Standby Condition) Right side When the trigger slid

45、er moves along the longitudinal grooves on slider (R) till the ends of grooves, the trigger slider itself begins to push and move slider (R). Start point Ends of longitudinal grooves Sections pushing slider (R) X92-4430-0 x X92-4450-0 x 9 When slider (R) moves, the boss of the roller arm moves along

46、 the groove of slider (R), thereby separating the helical gear 2 coupled with it from load gear 2. 3) Rotation of rollers during disc loading As shown in the following figure, the motor rotation force is transmitted through sun gear helical gear 2 load gear 2 to the gear that is coupled directly wit

47、h the roller shaft to rotate the rollers and pull in the disc. (2) How to stop the roller rotation The boss of the roller arm is engaged with a groove on slider (R). Boss Groove Groove Roller Rotation direction for pulling the disc in Disc Sun gear Force transmitted from the motor Load gear 2 Helica

48、l gear 2 Roller arm Slider (R) assy Roller arm Helical gear 2 Roller arm Gear shaft Slider (R) Groove Clamper assy Plate spring (3) Operation of the clamper (Disc chucking) 1) Engaged condition The plate spring attached to the clamper chassis is originally engaged with a groove on slider (R). This s

49、tops transmission of the force to the rollers so the rollers stop. Stopped Slider (R) Load gear 2 Helical gear 2 X92-4430-0 x X92-4450-0 x 10 Center of rotation Slider (R) Clamper Plate spring Clamper chassis assy Engaged condition 2) Lowering the clamper (for disc chucking) As slider (R) moves, the plate spring section engaged with it moves along its groove and lowers the clamper chassis assembly. The following figure shows the flow of operation. 2) Lowering the rollers (Disc playback position) As slider (R) moves, the roller lever shaft engaged with a groove on slider (