Sony-CDPXA50ES-cd-sm 维修电路原理图.pdf

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1、MICROFILMCDP-XA50ESAEP ModelE ModelSERVICE MANUALCOMPACT DISC PLAYERModel Name Using Similar MechanismNEWCD Mechanism TypeCDM32BB-12B (BLACK)CDM32BN-12B (GOLD)Base Unit NameBU-12BOptical Pick-up NameKSS-273B/J1NSPECIFICATIONSPhoto: Black Continued on next page RadioFans.CN 收音机爱 好者资料库 2 TABLE OF CONT

2、ENTS1.SERVICING NOTES1-1.How to Open the Disc Tray When Power SwitchTurns Off.31-2.Preparation for Adjustment and Measurement . 32.GENERAL.43.DISASSEMBLY. 154.TEST MODE4-1.AF Mode. 204-2.ADJ Mode . 214-3.CLV-S Mode . 215.ELECTRICAL ADJUSTMENTS. 226.DIAGRAMS6-1.Printed Wiring Boards SERVO Section . 2

3、56-2.Schematic Diagram SERVO Section . 276-3.Schematic Diagram AUDIO Section . 326-4.Printed Wiring Boards AUDIO Section . 376-5.Printed Wiring Boards PANEL Section . 396-6.Schematic Diagram PANEL Section . 416-7.Printed Wiring Boards POWER SUPPLY Section . 446-8.Schematic Diagram POWER SUPPLY Secti

4、on . 476-9.IC Pin Function Description. 547.EXPLODED VIEWS. 608.ELECTRICAL PARTS LIST. 66SAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK ! OR DOTTEDLINE WITH MARK ! ON THE SCHEMATIC DIAGRAMSAND IN THE PARTS LIST ARE CRITICAL TO SAFEOPERATION. REPLACE THESE COMPONENTS WITHSONY PARTS WH

5、OSE PART NUMBERS APPEAR ASSHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-LISHED BY SONY.MODEL IDENTIFICATION BACK PANEL 4-986-742-AEP Model: 1 (CED)Singapore Model : 2 (SP)RadioFans.CN 收音机爱 好者资料库 3 SECTION 1SERVICING NOTES1-1.HOW TO OPEN THE DISC TRAY WHENPOWER SWITCH TURNS OFFInsert a tapering driver i

6、nto the aperture of the unit bottom, andturn in the direction of arrow (to OUT direction).NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNITThe laser diode in the optical pick-up block may suffer electro-static break-down because of the potential difference generatedby the charged electrostatic

7、 load, etc. on clothing and the humanbody.During repair, pay attention to electrostatic break-down and alsouse the procedure in the printed matter which is included in therepair parts.The flexible board is easily damaged and should be handled withcare.NOTES ON LASER DIODE EMISSION CHECKThe laser bea

8、m on this model is concentrated so as to be focusedon the disc reflective surface by the objective lens in the opticalpick-up block. Therefore, when checking the laser diode emis-sion, observe from more than 30 cm away from the objective lens.Notes on chip component replacement Never reuse a disconn

9、ected chip component. Notice that the minus side of a tantalum capacitor may be dam-aged by heat.Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C dur-ing repairing. Do not touch the soldering iron on the same conductor of thecircuit board (within 3 times). Be

10、careful not to apply force on the conductor when solderingor unsoldering.This appliance is classified as a CLASS 1 LASER product.The CLASS 1 LASER PRODUCT MARKING is located onthe rear exterior.Laser component in this product is capable of emitting radiationexceeding the limit for Class 1.The follow

11、ing caution label is located inside the unit.CAUTIONUse of controls or adjustments or performance ofprocedures other than those specified herein mayresult in hazardous radiation exposure.SERVO BOARD Conductor side IC91IC101+5 VIC26111-2.PREPARATION FOR ADJUSTMENT ANDMEASUREMENTPerform connecting the

12、 IC261 pin 2 of SERVO board to the lineof +5V because this unit does not work without the stabilizer struc-turally.traytapering driver*To close the disc tray, turn the taperingdriver in the reverse direction (to IN di-rection).2 4 SECTION 2GENERALThis section is extractedfrom instruction manual. 5 6

13、 7 8 9 10 11 12 13 14 15 SECTION 3DISASSEMBLY This set can be disassembled in the order shown below.Note: Follow the disassembly procedure in the numerical order given.LOADING PANEL SECTIONLOADING PANEL SECTION(Page 15)CASE (TOP PLATE ), FRONT PANEL SECTION(Page 16)AUDIO BOARD(Page 16)MECHANISM DECK

14、 (CDM32BB-12B/CDM32BN-12B)(Page 17)SERVO BOARD(Page 17)PANEL (DRAWER)(Page 18)BASE UNIT (BU-12B)(Page 18)SLED MOTOR (M21), OPTICAL PICK-UP (KSS-273B/J1N)(Page 19)5connector(CN292)4loading panel section3two hexagon hole bolts(LID) (for black/gold)2two screws(KTP3 8) (for black/gold)1Open the tray tur

15、ning thetapering screwdriver to thearrow direction.tray 16 CASE (TOP PLATE), FRONT PANEL SECTION9three connectors(CN351, 352, 461)6four screws(3 8)4screw(3 8)0front panel section8two screws(K3 8)5lag4four screws(3 8)3two connectors(CN202, 203)4two screws(3 8)2case (top plate)1three flat head screws1

16、three flat head screws3four connectors(CN103, 104, 105, 202)3two connectors(CN922, 923)AUDIO BOARD3two connectors(CN401, 501)3four connectors(CN402, 502, 610, 611)7audio board3two connectors(CN608, 609)2side plate (R)3two connectors(CN201,993)7two brakets (case)6eight screws(BV3 8 B)5lag4TR screw1fo

17、ur flat head screws 17 MECHANISM DECK (CDM32BB-12B/CDM32BN-12B)2two screws2two screws3clamp1connector(CN952)1two connectors(CN103, 104)1two screws(BVTP3 6)SERVO BOARD1two screws(BVTP3 6)2bracket (servo)5six screws(BVTP3 6)6servo boardbracket (servo)1connector(CN105)4wire (flat type)(12 core)(CN101)3

18、wire (flat type) (26 core)(CN102)4mechanism deck(CDM32BB-12B)(CDM32BN-12B)3clamp 18 PANEL (DRAWER)1two tapping screws2two ditchBASE UNIT (BU-12B)4two screws(PTPWH2.6 8)6base unit7flexible board(CN291)7two coil springs (F)7two coil springs (F)1flexible board(CN192)5two holders (SP)4two screws(PTPWH2.

19、6 8)3Remove the panel (drawer)to direction of the arrow.5two holders (SP)2screw (B2.6 10)3lag 19 SLED MOTOR (M21), OPTICAL PICK-UP (KSS-273B/J1N)7poly-slider washer8gear (D)4tapping screw5lag6leaf spring (OP)A2two screws(BTP2.6 8)3leaf spring (skew)9Remove the sled motor (M21)and optical pick-up(KSS

20、-273B/J1N) to directionof the arrow A.1flexible board(CN11)4tapping screw0bracket (OP base) 20 SECTION 4TEST MODE4-1.AF MODEConnect the TP2 (AFJ) on the SERVO board to the ground andturn on the power supply.The AF mode is then activated and the following check can bemade.4-1-1.Fluorescent Indicator

21、Tube CheckAfter confirming display of all on, keep pressing the followingbutton, and the following display is attained.p (STOP) button (Display: 01)” (PLAY) button (Display: 02)P (PAUSE) button (Display: 03) button0 buttonSHUFFLEREPEATA-AUTO SPACEEDITSTEPPROGRAMINDEX1B( JUST )PEAK13579111315 (Displa

22、y: 04) (Display: 05) (Display: 06)2468101214” (Display: 07)P MODE buttonSIDE-ACUSTOM INDEXFADESECDELETEC. (Display: 08)REPEAT buttonTIME button (Display: 10)C. FILEINDEXSIDE-BMIN(1) (Display: 09)Keep pressing the OPEN/CLOSE button, and all on display isattained again.4-1-2.Key CheckAll buttons are a

23、ssigned with numbers respectively, and when eachbutton is pressed, it is counted and its number is displayed. Up to“16” can be counted.A button pressed once is not further counted but the number isdisplayed.Table 4-1.ButtonDisplayButtonDisplayERASE 00P03EDIT/12)04TIME FADEFILE13005FILTER20CHECK06PUS

24、H ENTER23CLEAR07all lightP MODE08OPEN/CLOSEupp01REPEAT09(02TIME104-1-3.Remote Commander CheckPress the ( button on remote commander, and “ ” ( on theset turn on. Nothing will be displayed if pressing another button.(count displaybutton numberdisplayCHECK buttonCLEAR button( TIME ) 21 4-2.ADJ MODECon

25、nect the TP1 (ADJ) on the SERVO board to the TP (GND)and turn on the power supply. The ADJ mode is then activatedand the following operation is executed. There is no problem even if GFS is low value continuously dur-ing playing. Do not perform high speed search during an access. The gain of focus se

26、rvo and spindle servo does not lower duringplaying. Manual operation and measurement of the servo system are pos-sible. (For detailed operating method, see Table 4-2. in ADJMode.)4-2-1.Button Operation Table in ADJ ModeAfter all music numbers are displayed, press the TIME button,and the jitter displ

27、ay mode is then set. The button functions are aslisted below.Button Functions (Operate with remote commander.)Table 4-2.* For button numbers 3, 8, 11, and 12, use them only when anoscilloscope is connected.Button No.Test Mode3Tracking servo off8Tracking servo on11S-curve measuring mode12All servo of

28、f13Top turnback display14Botton turnback display15Center display16Optimum point display17Optimum jitter display18TE traverse display19VC, FE and RF display20Autogain display(Focus, tracking and sled)4-3.CLV-S MODEThe spindle servo can be operated for play in the CLV-S mode byconnecting TP (ADJ) and

29、TP (GND) after turning on the powersupply.SERVO BOARD Conductor side TP(GND)IC101TP 1(ADJ)TP 2(AFJ)CN101CN102 22 Notes:1.CD block basically constructed to operate without adjustment.Therefore, check each item in order given.2.Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwiseindicated.3.Use

30、the oscilloscope with more than 10 M impedance.4.Clean an object lens by an applicator with neutral detergentwhen the signal level is low than specified value with the fol-lowing checks.Procedure:1.Connect the oscilloscope to TP (FE) and TP (VC) on SERVOboard.2.Connect the TP (FEI: IC101 pin ) and T

31、P (VC) with leadwire.3.Turned power switch on.4.Put disc (YEDS-18) in and turned power switch on again andactuate the focus search. (actuate the focus search when disctable is moving in and out.)5.Confirm that the oscilloscope waveform (S-curve) is symmetri-cal between A and B. And confirm peak to p

32、eak level within3.0 1.0 Vp-p.S-curve waveform6.After check, remove the lead wire connected in step 2.Note: Try to measure several times to make sure that the ratioof A : B or B : A is more than 10 : 7. Take sweep time as long as possible and light up thebrightness to obtain best waveform.RF Level Ch

33、eckConnection:Procedure:1.Connect the oscilloscope to TP (RF) and TP (VC) on SERVOboard.2.Turned power switch on. (stop mode)3.Put disc (YEDS-18) in and press the ( button.4.Confirm that the oscilloscope waveform is clear and check RFsignal level is correct or not.Note: Clear RF signal waveform mean

34、s that the shape “” canbe clearly distinguished at the center of the waveform.RF signal waveformSECTION 5ELECTRICAL ADJUSTMENTSVOLT/DIV: 200 mVTIME/DIV: 500 ns(with the 10: 1 probein use)level: 1.2Vp-p+0.250.20ABsymmetrywithin 3.0 1.0 Vp-pS-Curve CheckConnection:+SERVO boardTP (FE)TP (VC)oscilloscop

35、e+SERVO boardTP (RF)TP (VC)oscilloscope(AC range)When observing the eye pattern, set the oscilloscope for AC rangeand raise vertical sensitivity.E-F Balance (Traverse) CheckConnection:Procedure:1.Connect the TP1 (ADJ) to ground and TP (TEI: IC101 pin )to TP (VC) with lead wire.2.Connect the oscillos

36、cope to TP (TE) and TP (VC) on SERVOboard.3.Turned power switch on.4.Put disc (YEDS-18) in and press the ( button.5.Confirm that the oscilloscope waveform is symmetrical on thetop and bottom in relation to 0 Vdc, and check this level.6.After check, remove the lead wire connected in step 1.RF PLL Fre

37、e-run Frequency CheckConnection:Traverse waveformAB+SERVO boardTP (TE)TP (VC)oscilloscope(DC range)level: 200 100 mVp-p+TP (PLK)SERVO boardfrequency counterProcedure:1.Connect the frquency counter to TP (PLK).2.Turned power switch on.3.Put disc (YEDS-18) in and press the ( button.4.Confirm that the

38、reading on frequency counter is 4.3218 MHz. 23 24 Skew AdjustmentNote : Do not perform the skew adjustment when not using at-tached stabilizer to a set.+SERVO boardTP (RF)TP (VC)oscilloscope(AC range)VOLT/DIV: 200 mVTIME/DIV: 500 ns(with the 10: 1 probein use)level: 1.2Vp-p+0.250.20RF signal wavefor

39、mSERVO BOARD Conductor side TP (TEI)IC101SECTION 6DIAGRAMS Circuit Boards LocationTP (RF)TP (FE)TP (RFI)TP (TE)TP (VC)TP1 (ADJ)TP2 (AFJ)TP(PLK) 29(FEI)CN101CN1021.Remove the bottom plate, put one third of the unit out fromthe desk.2.Connect the osiclloscope to TP (RF) and TP (VC) on SERVOboard.3.Tur

40、ned power switch on.4.Put disc (YEDS-18) in and press the ( button.5.Adjust to be clear the waveform of the oscilloscope turningthe adjsutment screw with a screwdriver.Note: Clear RF signal waveform means that the shap “”can beclearly distinguished at the center of the waveform.6.After the adjustmen

41、t, lock the adjustment screw.LOADING MOTOR boardSERVO boardPOWER boardCOAX boardOPT boardLINE boardAUDIO boardFLEX RELAY boardKEY-L boardFL RELAY boardLOADING SW boardDISPLAY boardKEY-R boardVR boardSW boardBSL boardFUSE board screwdriveradjustment screw 49 50 262728293031323334353637383940 41424344

42、 4562636465666768697071727374757677787980818292 91908988878685 84 8393949596979899100SLED PWMGENERATORTRACKING PWMGENERATORFOCUS PWMGENERATORPWM GENERATORSERVO DSPFOCUSSERVOTRACKINGSERVOSLEDSERVOCLVPROCESSORCPUINTERFACENOISESHAPER18-TIMESOVER SAMPLINGFILTERCPUINTERFACECPUINTERFACEADDRESSGENERATORCPU

43、INTERFACEPRIORITYENCODERCPUINTERFACEERRORCORRECTORCPUINTERFACETIMINGGENERATOR 2MIRRDFCTFOK DETECTOR32K RAMRESISTERD/ADIGITALPROCESSORTIMINGGENERATOR 1SYNCPROTECTORDIGITALOUTSUBCODEP-WPROCESSORSUBCODEQPROCESSORDIGITALPLLVARI-PITCHDOUBLE SPEEDCPUINTERFACEEFMDEMODULATORSERIALPARALLELPROCESSORCPUINTERFA

44、CEASYMMETRYCORRECTION1234567891011201918171615141312212223242546 5061|51PEAKDETECTORCLOCKGENERATORMUXA/DCONVERTERSWITCH&BUFFERSERVOAUTOSEQUENCERSERVOMICRO PROGRAMINTERFACERFCADIOAVSSIGENAVDDVCKIVPCOPDOTES3TES2DVSSTESTVCO1VCO0SRONSRDRSFONTFDRTRONTRDRTFONFFDRFRONFRDRFFONRFDCTESEFEVCFILOFILIPCOCLTVAVSS

45、RFACBIASASYIASYOAVDDADDASYEPSSLWDCKLRCKXTAIXTAOXTSLDVSSFSTIFSTOD OUTMD2C16MC4MSCORWFCKEMPHSBSOEXCKSQSOSQCKMUTESENSXRSTDIRCSCLKDFSWATSKDATAXLATCLOKCOUTADDMIRRDFCTFOKFSWMONMDPMDSLOCKSSTPSFDR43DA01|DA11DA16|DA1212345678910GNDMOTORDRIVENOISEFILTERCLAMPFWD.INREV.INVCC 1VCC 2NOISEFILTERMOTORDRIVEMOTORDRIV

46、EMOTORDRIVET.S.DO.C.PFWD/REV/STOPCONTROL LOGIC IC Block Diagrams SERVO Section IC203LB1641IC101CXD2545QIC91M51957AL+345VDDINGNDDLOUT1.25V12 51 52 AUDIO Section 123456789NCOUTPUT 2VccGNDNCINPUT 2INPUT 1NCMOTORDRIVEMOTORDRIVEREGSWITCHSWITCHOUTPUT11234567891020191817161514131211212223242526272829303132

47、3334353637383940414243444546565554535251504948475758596061626364S/PTIMING CIRCUITINTERPOLATERINTERPOLATERTHIRD ORDERNOISE SHAPERTHIRD ORDERNOISE SHAPERPLMPLMCLOCKGENERATORSYNCCOEFSPLM18/20DVDDRVSUB (D) RVSUB (CHIP) RVDD2VDDR1 ()VSSR1 (+)VSS2VSS2L1 (+)VSSL1 ()VDDVDD2VSUB (CHIP) LVSUB (D) LDVDDLTEST3T

48、EST2TEST1DATAOUT ON/OFFVSS2L2 (+)VSSL2 ()VDDVDD2VSUB (A) LXVDDXOUTXINXVSSXVSSVSUB (A) RVDD2VDDR2 ()VSSR2 (+)VSS2DRILRCKIMUTELMUTERINITDVSSLDVSSR512FSOBCKIDLIDROLRCKOINAFDINIT128FSDPO/BCKODM2/SDRODM1/SDLODLO6CLR7PR8VCC5QRSQ3Q2D4GND1CKQDC3rd orderNOISESHAPERS / PTIMINGCIRCUITCLOCKGENERATORDATA SELECT

49、DATA SELECT P/S CONVERT&D/F-CLK GEN.4BIT DATABITSTREAM0 DETECTMUTECIRCUITOR3rd orderNOISESHAPERL . I . P.ATTx 0.75L . I . P.ATTx 0.75DITHEROVERFLOW DETECTORFIR 4MODEINAFOVFLAGMUTERMUTELMTPOLDRPOLMODENCDFDTORDFLRCKOTEST4TEST3VSSIF SELDIF SELCNCSBCKISDATARSDATALNCDFDTOLDFBCKODFDTENTEST1TEST2VSSPLMG2VD

50、DNSDOL4NSDOL3NSDOL2NSDOL1NCNCVDDVDDNC64FSINSDOR1NSDOR2NSDOR3NSDOR4MCKINVDDPLMG1NRGCLRSYSMLATCHSHIFTATTINITLRCKIDATAIBCKIVSSVSSNCINVO2INVO1INVINC128FSOCKVDDDINIT52535455565758596061626364515049484746454443424140393837363534331234567891011121314151617181932313029282726252423222120FIR 2FIR 1FIR 3ATTIIR