Kenwood-X92_4440_0x-cd-sm 电路图 维修手册.pdf

《Kenwood-X92_4440_0x-cd-sm 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Kenwood-X92_4440_0x-cd-sm 电路图 维修手册.pdf（18页珍藏版）》请在收音机爱好者资料库上搜索。

1、 2001-12 PRINTED IN JAPAN B51-7867-00 (N)3417 CD MECHANISM ASSY SERVICE MANUAL X92-4030-0 x X92-4440-0 x DESCRIPTION MECHANISM X92-4030-00 (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) X92-4

2、440-01 (DXM-6101W) X92-4440-02 (DXM-6102W) X92-4440-03 (DXM-6103W) X92-4440-04 (DXM-6104W) X92-4440-05 (DXM-6105W) 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

3、机爱 好者资料库 2 X92-4030-0 x X92-4440-0 x 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 the disc insertion mouth is trans- formed. NG OKOK PICK UP SPINDLE MOT

4、OR 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. RadioFans.CN 收音机爱 好者资料库 X92-4030-0 x X92-4440-0 x 3 Mother Board DOUT22 X1/CLK19 D.GND4DATA18 Pick-Up/MSTOP10 IC1IC2/MRST11 52/MUTE L12

5、/MUTE R13 ABQ111IC6 CDL-ch8 VrefR-ch6 RefQ3 A+5VA.+8V9 A.GNDA.GND7 IC45VQ2 2VrefReg D.GND 2 MUTEDRVMUTE Bu.+5V15 Q4 7 2Q5 LodingH D.GND14 2 SledLLoe/Lim SW 1 S.GND 0-01Only 8Eje SW17 12Eje SW 21 D.GNDLos SW20 S7.5V3 S.GND2 Motor4 Lo/Ej5 RF Amp Fo Coil Servo Processor + MI-Com 1Chip IC EF APC Tr Coil

6、 S1 8V SW Spindle Motor Loading & Sled Motor Motor Driver Vref D2 SW 5V SW SW S3 S4 SW +5V S2 Clock 16.93MHz LPF BLOCK DIAGRAM COMPONENTS DESCRIPTION Ref.No.Application/FunctionOperation/Condition/Compatibility IC1CD-RW compatible RF amplifier Generation of RF and servo error (focusing error, tracki

7、ng error) signals based on the signals read from the APC circuit and pickup, detection of dropouts, anti-shock, track crossing and off- track signals, and gain switching for CD-RW. IC2CD signal processor LSI + Mechanism u-COM Focusing, tracking, sled and spindle servo processing, automated processin

8、g (focusing, tracking, gain, offset and balance), digital signal processing (DSP, PLL, subcode, CIRC error correction and audio data interpolation), Text function (MN662773kH2), and microcomputer function. IC44-CH BTL driver Drive of the focusing coil, tracking coil, sled motor and spindle motor, pl

9、us loading and ejection operations. IC6Audio active filterSecondary LPF Q1For APC (Auto Power Control)LD drive. Q2Q3 SWON when P-ON = H (when SW +5 V is ON). Q3A.8V SWON when P-ON = H (when Q2 is ON). Q4D.5V SWON when P-ON = H (when Q5 is ON). Q5Q4 SW(P-ON)ON when P-ON = H. D1Pickup laser diode prot

10、ection D2D/A converter power supply diodeA.8V A.5V D3For static protection D4For forced gain boost (tracking servo) GCD PLAYER UNIT (X32-5170-0 x/X32-5190-0 x) *P-ON: Pin 82 of IC2. RadioFans.CN 收音机爱 好者资料库 X92-4030-0 x X92-4440-0 x 4 MICROCOMPUTERS TERMINAL DESCRIPTION GMechanism Microcomputer (IC2

11、: X32-5170-0 x, X32-5190-0 x) Pin No.Name.I/ODescriptionProcessing Operation 1BDOIDropout signal input. H: Detected.Photodetector signal input 1. 2OFTIOff-track signal input. H: Detected.Photodetector signal input 2. 3/RFDETIRF detection signal input. H: Detected.Photodetector signal input 3. 4VDETI

12、Vibration detection signal input. H: Detected.Photodetector signal input 4. 5LDONOLaser diode ON signal output. H: ON.Photodetector RF signal add input. 6NC-No connection.RF amp filter terminal 1. 7NC-No connection.RF amp filter terminal 2. 8AVSS3IAnalog circuit GND. 9AVDD3IAnalog circuit power supp

13、ly. 10FBALOFocusing balance adjustment output.Laser diode monitor input. 11TBALOTracking balance adjustment output.Laser diode drive output. 12FEIFocusing error signal input (D/A input). 13NC-No connection.Tracking filter terminal 1. 14NC-No connection.Tracking filter terminal 1. 15TEITracking error

14、 signal input (analog input). 16NC-No connection.Track cross comparator filter terminal. 17NC-No connection. 18NC-No connection.RF signal input (for RF detection). 19RFENVIRF envelope signal input. 20VREFIVREF input. 21ARFIRF signal input (for DSL). 22DRFIDSL bias terminal. 23DSLFI/ODSL loop filter

15、terminal. 24IREFIReference current input. 25PLLFI/OPLL loop filter terminal. 26PLLF2I/OPLL loop filter characteristic switching terminal. 27VCOFI/OVCO loop filter terminal. 28VCOF2I/ODigital servo 33.8688 MHz generation (VCO loop filter terminal). 29TRVOTraverse forced feed output. 30TVDOTraverse dr

16、ive output. 31PCOSpindle motor ON output. L: ON. 32ECMOSpindle motor drive output (forced mode output) (D/A output). 33ECSOSpindle motor drive output (servo error signal output). 34KICKOKick pulse output. 35TRDOTracking drive output. 36FODOFocusing drive output. 37TOFSOTracking offset adjustment out

17、put. 38AVDD2IAnalog circuit power supply (for DSL, PLL, AD and DA circuits). 39AVSS2IAnalog circuit GND. 40DVSS2IDigital circuit GND. 41EFM or CK384OEFM signal output. When command is executed: 16.9344 MHz clock output. 42PCK or DSLBOPLL sampling clock output. When command is executed: DSL balance o

18、utput. 43/CLDCKOSubcode frame clock signal output. 44FCLKOXtal frame clock signal output. 45IPFLAGOInterpolation flag signal output. H: Interpolated. 46FLAGOFlag signal output. 47TRCRSITrack crossing signal input.Track crossing signal output. 48STOUTOSerial data output for monitor signal (OFT, VDET,

19、 BDO, RFDET, etc.) 49STLDOLoad signal output for monitor signal. 50SMCKOBit clock signal output for monitor signal. 5 X92-4030-0 x X92-4440-0 x MICROCOMPUTERS TERMINAL DESCRIPTION Pin No.Name.I/ODescriptionProcessing Operation 51CSELI Xtal oscillation frequency selection terminal, which is fixed at

20、L. H: 33.8688 MHz. L: 16.9344 MHz. 52TEST1ITest pin 1. Fixed at L (normal position). 53TEST2ITest pin 2. Fixed at L (normal position). 54IOSELIAudio DAC external data input mode selection terminal. 55/NRSTIReset input. L: Reset. 56BCLKOSRDATA bit clock output. 57LRCKOL/R identification signal output

21、. 58SRDATAOSerial data output. 59SUBCOSubcode serial output. 60SBCKISubcode serial output clock input. 61DQSYOCD-TEXT read permission signal output. 62DEMPHODe-emphasis detection signal output. H: ON. 63TXODigital audio interface signal output. 64SRDATAINISRDATA input/test terminal. 65LRCKINILRCK in

22、put/SMCK output frequency switching. 66BCLKINIBCLK input. When not used: VDD. 67DVDD1IDigital circuit power supply. 68X1IXtal oscillator input terminal. 69X2OXtal oscillator output terminal. 70DVSS1IDigital circuit GND. 71XSUB1IMicrocomputer clock input terminal. 72XSUB2OMicrocomputer clock output t

23、erminal. 73DVDD2IDigital circuit power supply. 74NCONo connection. 75NCONo connection. 7673/74SELI73/74 selection port. 77DRV_MUTEODriver muting control terminal. 78NCONo connection. 79NCONo connection. 80TESTITest mode switching terminal. 81ASELIAudio output polarity detection terminal. 82PONOAudio

24、/digital power supply control terminal. 83SEARCHOServo IC gain switching control terminal. 84EQCNTORF amp double-speed switching control terminal. 85SW3ILimit switch detection terminal. 86/MUTE_LOL-CH analog muting control terminal. 87/MUTE_ROR-CH analog muting control terminal. 88CD_RWOCD-RW contro

25、l terminal. 89/RSTISystem reset input terminal. 90MECHASELI6000/6010 selection port.L=6000 H=6010 91/MSTOPIStandby detection terminal. 92LDCNTOLD control terminal. 93DATAI/OI2C bus data line (communication line with System controller). 94/CLKI/OI2C bus clock data line (communication line with System

26、 controller). 95HOTITemperature protection detection terminal. 96VREF+IA/D converter + power supply. 97OUTROR-channel audio output. 98AVDD1I Analog circuit power supply (for audio output circuits of both L and R channels). 99OUTLOL-channel audio output. 100AVSS1I Analog circuit GND (for audio output

27、 circuits of both L and R channels). X92-4030-0 x X92-4440-0 x 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 di

28、sc is inserted, the disc arms open to the left 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 tran

29、smitted to the gear train. 3) When the force 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 roller

30、s, the disc edge pushes the trigger arm and 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, th

31、e roller areas supporting the disc decreases. 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 X92-4030-0 x X92-4440-0 x 7 (2) Basic c

32、onstruction (Initial position of the planetary 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 mechan

33、ism. 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 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

34、 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 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 slide

35、r Spring Slider (R) Center of rotation Trigger 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 g

36、ear) This causes the planetary gear, which is 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

37、 causes the carrier gear to rotate. Planetary gear Loose P l a n e t a r y Loose Carrier gear X92-4030-0 x X92-4440-0 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 fo

38、rce 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 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

39、during playback. (Disc chucking) Moving the 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 vi

40、brations during disc playback. Moving the pickup (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

41、 Condition) Right side When the trigger slider 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) X92-4030-0 x X92-4440-0 x 9 When slider (R) m

42、oves, 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 rollers during disc loading As shown in the following figure, the motor rotation force is transmitted through sun gear helical gear 2 load gea

43、r 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 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 t

44、ransmitted 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 Plate spring (3) Operation of the clamper (Disc chucking) 1) Engaged condition The plate spring attached to the clamper chassis is originally

45、 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 X92-4030-0 x X92-4440-0 x 10 Center of rotation Slider (R) Clamper Plate spring Clamper chassis assy Engaged condition 2) Lowering the clamper

46、(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 wit

47、h 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 Roller Disc Slider In contrast to the downward movement of the rollers, the extremity of the roller lever starts to be raised

48、. 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 position, the rollers are located below the disc and in contact with it. To rotate the disc for playback, it is required to sep

49、arate 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 preventing insertion of more than one disc. At the lowest position of the rollers Initial position X92-4030-0 x X92-4440-0 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 pulled in by the rollers, its position should be adjusted so that it can be placed precisely