Kenwood-X92_4460_0x-cd-sm 电路图 维修手册.pdf

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1、 2002-1 PRINTED IN JAPAN B51-7891-00 (N) 3415 DESCRIPTION MECHANISM X92-4460-00 (DXM-6400W) X92-4460-01 (DXM-6401W) X92-4460-02 (DXM-6402W) X92-4460-03 (DXM-6403W) outer-chassis dumper (X4) floating spring (X4) traverse chassis assy Mecha PCB roller spring roller lever assy damper bracket disc guide

2、 assy CONSTRUCTION OF MAJOR PARTS CD MECHANISM ASSY X92-4460-0 x SERVICE MANUAL RadioFans.CN 收音机爱 好者资料库 2 NOTE FOR HANDLING MECHANISM ASSY Trigger Lever Pick is under 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 t

3、he 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 applied grease to the roller. Dont touched PICK and SPINDLE MOTOR. X92-4460-0 x RadioFans.CN 收音机爱 好者资料库 3 EF A C B D TR COIL FO COIL A

4、PC 1 CHIP IC SERVO MP3 DECODER RF AMP IC10 Q2 16.93MHz CLOCK X2D. GND DRIVER MOTOR IC4 PROCESSOR SPINDLE MOTOR SLED MOTOR LOADING & S. GND LPF IC12 IC11 DRAM D. GND IC5 MI-COM IC6 A3.3 REG 8V SW Q4 Q5 SW Q1 SW Q3 SW IC2 D3.3V REG D. GND A. GND D. GND S3 S4 S1 S2 D. GND (0-01) ONLY A. GND A. GND PICK

5、-UPBOARD MOTHER 7 VREF 30 24 PON PON Lch Rch A. GND A. +8V D. GND BU. +5V D5V LOE/LIM SW 8EJE SW 12EJE SW LOS SW S7.5V LO/EJ MOTOR S. GND 2 2 4 2 2 D MUTE BLOCK DIAGRAM COMPONENTS DESCRIPTION X92-4460-0 x GCD PLAYER UNIT(X32-5210-0 x) Ref.No.Component NameApplication/FunctionOperation/Condition/Comp

6、atibility IC2L88MS33TD3.3V AVRPower supply for the pickup, IC5, IC10 and IC11 IC4BA5824FP4CH BTL driver Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and eject operation. IC5703033AYGC-J01Mecha. control MI-COM. IC6TAR5S33A3.3V AVR Power supply for DAC, LPF operation

7、al reference voltage IC7TC74HCT7007AFLevel shifting(3.3V 5V)Buffer and logic level conversion from IC10 to IC5 IC10UPD63760GJRF amplifier+CD DSP+MP3 decoder IC114M bit DRAMFor data buffer IC12NJM4580M1Low pass filter2nd low pass filter for audio signals Q1DTA143EUAD.5V SW When PON(11pin) goes Lo, Q1

8、 is turned on, and SW5V is supplied to IC7 and AVREF(73PIN). Q2MCH6101APCLD power control Q3DTC124EUAD3.3V SW When PON(10pin) goes Hi, Q3 is turned on, and IC2 is working. Q4DTA143XUA A.8V SW When PON(10pin) goes Hi, Q4 and Q5 are turned on, and A.8V is supplied to IC6 and IC12. Q5DTC124EUA IS41LV16

9、257 or MSM51V4265EP70 RadioFans.CN 收音机爱 好者资料库 4 MICROCOMPUTERS TERMINAL DESCRIPTION GIC2 (CD PLAYER UNIT : X32-5210-0 x) Pin No.Name.I/ODescriptionProcessing Operation 1-5NCONot used(N.C.) 6EVDD-Positive power supply connection terminalConnected to BU 5V lines. 7EVSS-Ground connection terminalConnec

10、ted to GND lines. 8,9NCONot used(N.C.) 10PONOPower ON/OFF control terminalLo : Power OFF, Hi : Power ON 11PONOPower ON/OFF control terminalLo : Power ON, Hi : Power OFF 12LOE/LIM SWIDown limit SW detection terminalHiLo : Pickup most inner position detected 138EJE SWI8cm disc detection SW inputNot us

11、ed(connected to GND lines) 14LOS SWILoading start detection SW inputNot used(connected to GND lines) 1512EJE SWI12cm disc detection SW inputNot used(connected to GND lines) 16,17NCONot used(N.C.) 18VPP-FLUSH write terminalNot used(connected to GND lines) 19MUTE LOLch. Audio muting control output Lo

12、: Muting ON requested, Hi : Muting OFF requested 20MUTE RORch. Audio muting control output Lo : Muting ON requested, Hi : Muting OFF requested 21-25NCONot used(N.C.) 26EFLGIWMA error detection input (Lo: No ERROR)Not used(pull down to GND lines) 27WAITIWait control signal detection input 28FOKIFocus

13、ing condition detection inputLo : Focusing NG, Hi : Focusing OK 29,30NCONot used(N.C.) 31RESETIReset terminalLo : Reset, Hi : Normal operation 32XT1ISub clock resonator connection terminalNot used(pull down to GND lines) 33XT2-Sub clock resonator connection terminalNot used(N.C.) 34REGC-Capacitor co

14、nnection terminal for regulator inside microprocessor 35X2-Main clock resonator connection terminal 36X1IMain clock resonator connection terminal 37VSS-Ground connection terminalConnected to GND lines. 38VDD-Positive power supply connection terminalConnected to BU 5V lines. 39NCONot used(N.C.) 40WRL

15、OMultiplex WRITE signal outputLo : Write 41NCONot used(N.C.) 42R/WOMultiplex R/W signal outputNot used(N.C.) 43DSTB,RDOMultiplex RD siganal outputLo : Read 44ASTBOMultiplex ASTB siganal output 45,46NCONot used(N.C.) 47AD0I/OMultiplex Address/Data Bus 48AD1I/OMultiplex Address/Data Bus 49AD2I/OMultip

16、lex Address/Data Bus 50AD3I/OMultiplex Address/Data Bus 51AD4I/OMultiplex Address/Data Bus 52AD5I/OMultiplex Address/Data Bus 53AD6I/OMultiplex Address/Data Bus 54AD7I/OMultiplex Address/Data Bus 55BVDD-Bus interface positive power supply connection terminalConnected to D3.3V lines. X92-4460-0 x 5 M

17、ICROCOMPUTERS TERMINAL DESCRIPTION X92-4460-0 x Pin No.Name.I/ODescriptionProcessing Operation 56BVSS-Bus interface ground connection terminalConnected to GND lines. 57AD8I/OMultiplex Address/Data Bus 58AD9I/OMultiplex Address/Data Bus 59AD10I/OMultiplex Address/Data Bus 60AD11I/OMultiplex Address/D

18、ata Bus 61AD12I/OMultiplex Address/Data Bus 62AD13I/OMultiplex Address/Data Bus 63AD14I/OMultiplex Address/Data Bus 64AD15I/OMultiplex Address/Data Bus 65HCSBOChip select control outputNot used(N.C.) 66CSOChip select control outputLo : ON, Hi : OFF 67DSP RESETODSP reset control outputLo : Reset, Hi

19、: Normal operation 68REQIData transfer request inputNot used(pull down to GND lines) 69DBBWRDY0IDBB00 register write permission inputNot used(pull down to GND lines) 70DBBRRDY0IDBB00 register read permission inputNot used(pull down to GND lines) 71AVDD-A/D converter positive power supply connection

20、terminalConnected to BU 5V lines. 72AVSS-A/D converter ground connection terminalConnected to GND lines. 73AVREFIA/D converter reference voltage input terminalConnected to D5V lines. 74-77NCINot used(connected to GND lines) 78HOTITemperature change detection inputNot used(pull down to GND lines) 79M

21、-CONTINot used(connected to GND lines) 80WMAIWMA adaptation selection input Lo : WMA not adapted, Hi : WMA adapted 81NCINot used(connected to GND lines) 82ASELIAudio output polarity selection input Lo : Non-inverted output, Hi : Inverted output 83DASCIShock proof method selection input Lo : Shock pr

22、oof OFF, Hi : Shock proof ON 84TEST2Itest terminal 2Not used(pull down to GND lines) 85TEST3Itest terminal 3Not used(pull down to GND lines) 86NCONot used(N.C.) 87MSTOPIMECHA. Stop interrupt inputLo : Stop, Hi : Normal operation 88INTSVIInterrupt input from servo ICHi : Interrupt 89FOGUPIFocusing ga

23、in up interrupt input Lo : Normal operation, Hi : Focusing gain up 90ZMUTE RIRch. 0 bit muting detection inputLo : Muting OFF, Hi : Muting ON 91ZMUTE LILch. 0 bit muting detection inputLo : Muting OFF, Hi : Muting ON 92NCONot used(N.C.) 93D-MUTEODriver muting output Lo : Spindle motor, focusing actu

24、ator and tracking actuator outputs OFF 94SYS SDAI/OI2C bus data line (communication line with System microprocessor) 95NCONot used(N.C.) 96SYS SCLI/OI2C bus clock line (communication line with System microprocessor) 97-100 NCONot used(N.C.) 6 Center of rotation Projection Disc 8cm Disc Trigger arm A

25、 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 left and right and the claw below disc arm (L) sets the loading switch ON. 2) Th

26、e 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 is transmitted to the final gear, the rollers rotate to pull in the disc. The

27、 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 rotates it. 2) When the disc is an 8cm disc, it is pulled upwards by the taper

28、ing 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. To prevent the disc from dropping in this case, the claw is provided with a

29、projection for supporting the disc. Worm gearMotor Rubber rollers Disc IN Side view Disc guide Roller Disc IN Disc OUT Dis Clamper chassis X92-4460-0 x 7 (2) Basic construction (Initial position of the planetary gear mechanism) 1) Even after the disc has been inserted, the motor rotated and the gear

30、 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 in the loose condition. 2) When the sun gear is rotating and the carrier gear is locked, the

31、 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 of a spring. (4) Operation of slider (R) 1) Activating the trigger slider When the trigger

32、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 Trigger slider Trigger slider Trigger arm Disc Trigger arm Gear teeth on the traverse chassis 2)

33、 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 is attached on a pin of the carrier gear, to move according to the rotation of the carrier g

34、ear. 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. Planetary gear Loose P l a n e t a r y Loose Carrier gear X92-4460-0 x 8 3) Activating slider (R) W

35、hen 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) Functions activated by slider (R) 1) Operation modes To play back a CD, it is required to perform a flow o

36、f 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 rollers that are in contact with the disc. (Lowering the roller lever) 2) Coupling conditions The parts

37、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 pickup (optical assy) so that it can reads the disc signals. These series of operations are activated by t

38、he 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 slider moves along the longitudinal grooves on slider (R) till the ends of grooves, the trigger slider itsel

39、f begins to push and move slider (R). Start point Ends of longitudinal grooves Sections pushing slider (R) X92-4460-0 x 9 When slider (R) moves, the boss of the roller arm moves along the groove of slider (R), thereby separating the helical gear 2 coupled with it from load gear 2. 3) Rotation of rol

40、lers 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 with the roller shaft to rotate the rollers and pull in the disc. (2) How to stop the roller rotation The boss of the ro

41、ller 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 Helical gear 2 Roller arm Slider (R) assy Roller arm Helical gear 2 Roller arm Gear shaft Slider (R) Groove Clamper assy Pl

42、ate 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 stops transmission of the force to the rollers so the rollers stop. Stopped Slider (R) Load gear 2 Helical gear 2 X92-

43、4460-0 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 t

44、he flow of operation. 2) Lowering the rollers (Disc playback position) As slider (R) moves, the roller lever shaft engaged with a groove on slider (R) moves along the groove and lowers the rollers. The following figure shows the flow of operation. Center of rotation Shaft Final position Roller lever

45、 Roller Disc Slider In contrast to the downward movement of the rollers, the extremity of the roller lever starts to be raised. 2-disc insertion prevention Rollers are separated from the disc. Engaged condition (4) How to lower the rollers 1) Disc chucking completion position When the disc in this p

46、osition, the rollers are located below the disc and in contact with it. To rotate the disc for playback, it is required to separate the rollers from the disc. Disc chucking completion position The roller lever extremity comes in the position shown in the figure. Here, it plays a role of stopper for

47、preventing insertion of more than one disc. At the lowest position of the rollers Initial position X92-4460-0 x 11 (5) Floating position and lock position of the mechanism The disc is loaded and ejected by rotation of the rollers that come in close contact with the disc. After the disc has been pull

48、ed in by the rollers, its position should be adjusted so that it can be placed precisely on the turntable of the traverse chassis. To make this possible, the traverse chassis and outer chassis should be in the locked condition. Since the outer chassis is originally locked on the main unit, if the tr

49、averse chassis is also locked during playback, the disc would be subjected directly to vibrations of vehicle during driving and the disc signal would be hindered, making the audio intermittent or impossible to be played. To prevent such a problem, the traverse chassis is suspended from the outer case using springs or rubber dampers during driving. This positioning protects the disc playback operations and is referred to as the floating position. (6) Function of slider (L) Slider (L) ensures the mechanism lock position because the shafts of the outer chassis are inserted