Sony-CDPXE270-cd-sm 维修电路原理图.pdf

SERVICE MANUALCOMPACT DISC PLAYERUS ModelCDP-XE270/XE370Canadian ModelCDP-XE270AEP ModelUK ModelE ModelAustralian ModelCDP-XE270/XE370SPECIFICATIONSCDP-XE270/XE370Photo: CDP-XE370Ver 1.1 2001.07Model Name Using Similar MechanismNEWCD Mechanism TypeCDM66-5BD27Base Unit NameBU-5BD27Optical Pick-up NamePXR-104XCompact disc playerLaserSemiconductor laser ( =780 nm)Emission duration:continuousFrequency response2 Hz to 20 kHz 0.5 dBDynamic rangeMore than 93 dBHarmonic distortion0.0045%OutputsANALOGOUTDIGITALOUT(OPTICAL)GeneralPower consumption11 WDimensions (approx.)430 x 95 x 290 mm(w/h/d)incl. projecting partsMass (approx.)CDP-XE370: 3.2 kgCDP-XE270: 3.2 kgSupplied accessoriesAudio cord (2 phono plugs 2 phono plugs) (1)Remote commander (remote) (1) (CDP-XE370 only)R6 (size AA) batteries (2) (CDP-XE370 only)Design and specifications are subject to changewithout notice.LoadimpedanceOver 10kilohmsWave length:660 nmJacktypePhonojacksOpticaloutputconnectorMaximumoutput level2 V(at 50kilohms)18 dBmPower requirementsWhere purchasedUS, Canadian modelsAEP, UK modelsAustralian modelSingapore modelPower requirements120 V AC, 60 Hz230 V AC, 50/60 Hz240 V AC, 50/60 Hz220 V 230 V AC, 50/60 Hz9-929-591-12Sony Corporation2001G0500-1Home Audio CompanyC 2001.7Shinagawa Tec Service Manual Production GroupRadioFans.CN 收音机爱 好者资料库2CDP-XE270/XE370TABLE OF CONTENTS1.SERVICING NOTES.42.GENERAL.53.DISASSEMBLY3-1.Disassembly Flow .63-2.Case .63-3.CD Mechanism Deck (CDM66-5BD27).73-4.MAIN Board .73-5.Base Unit (BU-5BD27).84.TEST MODE.95.ELECTRICAL CHECKS. 116.DIAGRAMS6-1.Note for Printed Wiring Boardsand Schematic Diagrams . 136-2.Printed Wiring Board BD Board . 146-3.Schematic Diagram BD Board . 156-4.Printed Wiring Boards LOADING/MAIN/POWER SW Boards . 166-5.Schematic Diagram LOADING/MAIN/POWER SW Boards . 176-6.Printed Wiring Boards DISPLAY/KEY Boards . 186-7.Schematic Diagram DISPLAY/KEY Boards . 196-8.IC Pin Function Description . 227.EXPLODED VIEWS7-1.Case Section . 267-2.Front Panel Section . 277-3.CD Mechanism Deck Section (CDM66-5BD27). 287-4.Base Unit Section (BU-5BD27) . 298.ELECTRICAL PARTS LIST. 30Ver 1.1 2001.07RadioFans.CN 收音机爱 好者资料库3CDP-XE270/XE370Notes on chip component replacement Never reuse a disconnected 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 careful not to apply force on the conductor when solderingor unsoldering.CAUTIONUse of controls or adjustments or performance of proceduresother than those specified herein may result in hazardous ra-diation exposure.SAFETY CHECK-OUTAfter correcting the original service problem, perform the follow-ing safety check before releasing the set to the customer:Check the antenna terminals, metal trim, “metallized” knobs,screws, and all other exposed metal parts for AC leakage.Check leakage as described below.LEAKAGE TESTThe AC leakage from any exposed metal part to earth ground andfrom all exposed metal parts to any exposed metal part having areturn to chassis, must not exceed 0.5 mA (500 microamperes.).Leakage current can be measured by any one of three methods.1.A commercial leakage tester, such as the Simpson 229 or RCAWT-540A. Follow the manufacturers instructions to use theseinstruments.2.A battery-operated AC milliammeter. The Data Precision 245digital multimeter is suitable for this job.3.Measuring the voltage drop across a resistor by means of aVOM or battery-operated AC voltmeter. The “limit” indica-tion is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-amples of a passive VOM that is suitable. Nearly all batteryoperated digital multimeters that have a 2 V AC range are suit-able. (See Fig. A)Fig. A.Using an AC voltmeter to check AC leakage.1.5 k0.15 FACvoltmeter(0.75 V)To Exposed MetalParts on SetEarth GroundATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT!LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTEDES PICES SONT CRITIQUES POUR LA SCURITDE FONCTIONNEMENT. NE REMPLACER CES COM-POSANTS QUE PAR DES PICES SONY DONT LESNUMROS SONT DONNS DANS CE MANUEL OUDANS LES SUPPLMENTS PUBLIS PAR SONY.SAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK 0 OR DOTTEDLINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMSAND IN THE PARTS LIST ARE CRITICAL TO SAFEOPERATION. REPLACE THESE COMPONENTS WITHSONY PARTS WHOSE PART NUMBERS APPEAR ASSHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-LISHED BY SONY.The following caution label is located inside the unit.This appliance is classified as a CLASS 1 LASERproduct.The CLASS 1 LASER PRODUCT MARKING islocated on the rear exterior.4CDP-XE270/XE370SECTION 1SERVICING NOTESNOTES 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 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 beam 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.LASER DIODE AND FOCUS SEARCH OPERATIONCHECKCarry out the “S curve check” in “CD section adjustment” andcheck that the S curve waveforms is output three times. MODEL IDENTIFICATION Rear Panel MODELPART No.CDP-XE270: AEP model4-232-151-0CDP-XE270: UK model4-232-151-1CDP-XE270: US and Canadian models4-232-151-2CDP-XE270: Australian model4-232-151-3CDP-XE270: Singapore model4-232-151-6CDP-XE370: AEP model4-232-692-0CDP-XE370: UK model4-232-692-1CDP-XE370: US model4-232-692-2CDP-XE370: Australian model4-232-692-3CDP-XE370: Singapore model4-232-692-6PART No.5CDP-XE270/XE370SECTION 2GENERALThis section is extracted frominstruction manual.CLEAR qg (12)Disc compartment 6 (8)Display qj (10)PLAY MODE 2 (9, 12, 14)POWER 1 (8)Remote sensor qh (7)(CDP-XE370 only)REPEAT 3 (9, 11)TIME w; (10)BUTTON DESCRIPTIONSA OPEN/CLOSE 7 (8, 10, 12)H 8 (9, 11, 12, 14)X 9 (9, 14)x 0 (9, 14)lAMSL dial qa (9, 12, 14)m/M qk (9, 13)LOCATION OF CONTROLS FRONT PANEL REMOTE CONTROL (CDP-XE370 only)ANALOG OUT LEVEL +/ qk (7, 9)CHECK qg (12)CLEAR qf (12)CONTINUE 2 (9, 14)DISPLAY ON/OFF qs (11)FADER qd (13)Number buttons 4 (9, 12)PROGRAM qa (9)REPEAT 6 (9)SHUFFLE 1 (9)TIME 3 (10)BUTTON DESCRIPTIONS10 5 (9, 12)N qh (9, 11, 12, 14)X 8 (9, 14)x qj (9, 14). AMS 9 (9, 12, 14)m/M 0 (9, 13) REAR PANEL ANALOG OUT L/R jacks 2 (7)Mains lead 4 (7)DIGITAL OUT OPTICAL jack 1 (8)6CDP-XE270/XE370 This set can be disassembled in the order shown below.3-1.DISASSEMBLY FLOWSECTION 3DISASSEMBLYNote: Follow the disassembly procedure in the numerical order given.3-2.CASE3-2.CASE(Page 6)3-3.CD MECHANISM DECK(CDM66-5BD27)(Page 7)3-5.BASE UNIT(BU-5BD27)(Page 8)3-4.MAIN BOARD(Page 7)SET1two screws(case 3 TP2)1two screws(case 3 TP2)1screw(case 3 TP2)2case7CDP-XE270/XE3703-3.CD MECHANISM DECK (CDM66-5BD27)3-4.MAIN BOARD1tapering driver23panel, loading4wire (flat type) (21core)7connector (CN151)8CD mechanism deck(CDM66-5BD27) BOTTOM VIEW 5three screws(BVTP3 8)6Note:When the power supply does not turn on, rotate the cam with tepering driver (3 mm) as the figure shows, and the loading panel will be moved.1connector (CN602)2wire (flat type) (17core)(CN621)2wire (flat type) (21core)(CN651)5main board3four screws(BVTP3 8)4two screws(BVTP3 8)8CDP-XE270/XE3703-5.BASE UNIT (BU-5BD27)1screw (DIA. 12), froating3three screws (DIA. 12), froating4holder (66)2 BOTTOM VIEW 5two springs (932), compression5two springs (932), compression6base unit(BU-5BD27)9CDP-XE270/XE370SECTION 4TEST MODEAGING MODEProcedure:1.While pressing the bothx and CLEAR buttons, turn thepower on.2.Tray open-close aging is performed.3.Press the TIME button to display time for open-close on thefluorescent indicator tube.4.To release the mode, press the POWER button to turn OFFthe power.CHECK MODEProcedure:1.Press the POWER button to turn ON the power2.Press the OPEN/CLOSE button and insert the disc.3.Press the POWER button to turn OFF the power.4.While pressing the both PLAY MODE and buttons, turnthe power on .5.CD starts playing, and every time the TIME button is pressed,RFDC and OFFSET are changed over.6.To release the mode, press the POWER button to turn OFFthe power.ADJ MODEProcedure:1.Press the POWER button to turn ON the power2.Press the OPEN/CLOSE button and insert the disc.3.Press the POWER button to turn OFF the power.4.Short-circuit the test TP (ADJ) of the DISPLAY board andground with a lead wire.5.Press the POWER button to turn ON the power and CD playsthe second track.6.To release the mode, press the POWER button to turn OFFthe power.7.Open-circuit the test TP (ADJ) of the DISPLAY board andground with a lead wire.AFADJ MODE (KEY AND FLUORESCENT INDICA-TOR TUBE DISPLAY CHECK MODE)Procedure:1.Short-circuit the test TP (AFADJ) of the DISPLAY board andground with a lead wire.2.Press the POWER button to turn ON the power.The whole fluorescent indicator tube lights up.3.All buttons have individual button numbers.When a button is pressed, the button number is counted upand displayed.When remote controller signals are received, “RM *” will bedisplayed.(* are the numbers corresponding to the remote controllerbuttons.) (CDP-CE370 only)4.To release the mode, press the POWER button to turn OFFthe power.5.Open-circuit the test TP (AFADJ) of the DISPLAY board andground with a lead wire.Buttons and Corresponding Button NumbersButtonButton Number or DisplayH (PLAY)Partical lighting 1X (PAUSE)02x (STOP)Partical lighting 2lAMSL (button)04m05M06TIME07PLAY MODE08CLEAR09REPEAT10A OPEN/CLOSEAll litlAMSL (knob)When rotated clockwise: The music calendarnumerals light up in ascending order.When rotated counterclockwise: The musiccalendar numerals light up in descendingorder.Count up displayDisplays button number10SECMINPartial lighting 12468101214161820Partial lighting 2 AHA10CDP-XE270/XE370Checking Location: DISPLAY BOARD (Conductor Side) TP (ADJ)TP (AFADJ)(GND)11CDP-XE270/XE370Ver 1.1 2001.07Note:1. CD Block is basically designed to operate without adjustment. There-fore, check each item in order given.2. Use PATD-012 disc (4-225-203-01) unless otherwise indicated.3. Use an oscilloscope with more than 10M impedance.4. Clean the object lens by an applicator with neutral detergent when thesignal level is low than specified value with the following checks.S Curve CheckConnection:Procedure:1.Connect an oscilloscope to test point TP (FE1) and TP (VC)on the BD board.2.Turn the power on and insert the disc (PATD-012).3.Turn the power off and enter the ADJ mode. (Refer to 4. TestMode)4.Turn the power on to playback the second track and press thexbutton to stop playing back.5.Press the REPEAT button. (The object lens moves up anddown)6.Confirm the oscilloscope waveform (S-curve) is symmetricalbetween A and B. And check peak to peak level within 2 1Vp-p.S-curve waveformNote: Try to measure several times to make sure than the ratio of A : Bor B : A is more than 10 : 7. Take sweep time as long as possible and light up thebrightness to obtain best waveform.Checking Location: BD board (See page 12)RFDC Level CheckConnection:+BD boardTP (FE1)TP (VC)oscilloscopeABsymmetrywithin 2 1 Vp-p+BD boardTP (RFDC)TP (VC)oscilloscopeVOLT/DIV: 200 mVTIME/DIV: 500 ns level: 1.15 0.35 Vp-pVCProcedure:1.Connect an oscilloscope to test point TP (RFDC) and TP (VC)on the BD board.2.Turn the power on and insert the disc (PATD-012).3.Turn the power off and enter the ADJ mode. (Refer to 4. TestMode)4.Turn the power on to playback the second track.5.Confirm that oscilloscope waveform is clear and check RFDCsignal level is correct or not.Note: A clear RFDC signal waveform means that the shape “” can beclearly distinguished at the center of the waveform. RFDC signal waveformChecking Location: BD board (See page 12)RFAC Level CheckConnection:Procedure:1.Connect an oscilloscope to test point TP (RFAC) and TP (VC)on the BD board.2.Turn the power on.3.Turn the power off and enter the ADJ mode. (Refer to 4. TestMode)4.Turn the power on to playback the second track.5.Confirm that oscilloscope waveform is clear and check RFACsignal level is correct or not.Note: A clear RFAC signal waveform means that the shape “” can beclearly distinguished at the center of the waveform. RFAC signal waveformChecking Location: BD board (See page 12)+BD boardTP (RFAC)TP (VC)oscilloscopeVOLT/DIV: 200 mVTIME/DIV: 500 ns level: 1.35 0.4 Vp-pSECTION 5ELECTRICAL CHECKS12CDP-XE270/XE370Ver 1.1 2001.07E-F Balance CheckConnection:Procedure:1.Connect an oscilloscpe to test point TP (TE1) and TP (VC) onthe BD board.2.Turn the power on.3.Put the disc (PATD-012) in to playback the number two track.4.Press the TIME button. (The tracking servo and the sleddingservo are turned OFF)5.Check the level B of the oscilliscopes waveform and the A(DC voltage) of the center of the Traverse waveform.Confirm the following :A/B x 100 = less than 22%Traverse Waveform6.Press the TIME button. (The tracking servo and sledding servoare turned ON)Confirm the C (DC voltage) is almost equal to the A (DCvoltage) is step 5.Traverse WaveformChecking Location: BD board+BD boardTP (TE1)TP (VC)oscilloscope0VBlevel: 1.15 0.5 Vp-pCenter of the waveformA (DC voltage)0VTracking servoSled servoONC (DC voltage)Tracking servoSled servoOFFChecking Location: BD BOARD (Conductor Side) TP (RFDC)TP (FE1)TP (VC)IC131IC150IC101TP (TE1)TP (RFAC)1313CDP-XE270/XE370SECTION 6DIAGRAMS6-1.NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMSNote on Printed Wiring Board: X : parts extracted from the component side. Y : parts extracted from the conductor side.: Pattern from the side which enables seeing.(The other layers patterns are not indicated.)Caution:Pattern face side:Parts on the pattern face side seen from(Conductor Side)the pattern face are indicated.Parts face side:Parts on the parts face side seen from(Component Side)the parts face are indicated. Indication of transistorCBThese are omitted.EQBThese are omitted.CEQNote on Schematic Diagram: All capacitors are in F unless otherwise noted. pF: F50 WV or less are not indicated except for electrolyticsand tantalums. All resistors are in and 1/4 W or less unless otherwisespecified. C : panel designation. A : B+ Line. B : B Line. Voltages and waveforms are dc with respect to groundunder no-signal conditions.no mark : CD PLAY Voltages are taken with a VOM (Input impedance 10 M).Voltage variations may be noted due to normal produc-tion tolerances. Waveforms are taken with a oscilloscope.Voltage variations may be