Sony-SCDXB940-sacd-sm 维修电路原理图.pdf

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1、SERVICE MANUALSUPER AUDIO CD PLAYERAEP ModelUK ModelSPECIFICATIONSSCD-XB940Model Name Using Similar MechanismNEWCD Mechanism TypeCDM55B-DVBU3Base Unit NameDVBU3Optical Pick-up NameKHM-220AAA/J1N Continued on next page Photo: Black typeVer 1.1 2002.059-929-212-12Sony Corporation2002E0500-1Home Audio

2、CompanyC 2002.05Published by Sony Engineering CorporationRadioFans.CN 收音机爱 好者资料库2SAFETY-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

3、 NUMBERS APPEAR ASSHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-LISHED BY SONY.Notes 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

4、 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 h

5、erein may result in hazardous ra-diation exposure.RadioFans.CN 收音机爱 好者资料库3TABLE OF CONTENTS1.SERVICING NOTES.42.GENERAL.53.DISASSEMBLY.84.DIAGRAMS4-1.Notes for Printed Wiring Board andSchematic Diagram . 114-2.Printed Wiring Board TK Board . 124-3.Schematic Diagram TK Board . 134-4.Printed Wiring Bo

6、ard MAIN Board (Component Side) . 144-5.Printed Wiring Board MAIN Board (Conductor Side) . 154-6.Schematic Diagram MAIN Board (1/6) . 164-7.Schematic Diagram MAIN Board (2/6) . 174-8.Schematic Diagram MAIN Board (3/6) . 184-9.Schematic Diagram MAIN Board (4/6) . 194-10. Schematic Diagram MAIN Board

7、(5/6) . 204-11. Schematic Diagram MAIN Board (6/6) . 214-12. Printed Wiring Board AUDIO Board . 224-13. Schematic Diagram AUDIO Board . 234-14. Printed Wiring Board HP Board . 244-15. Schematic Diagram HP Board . 244-16. Printed Wiring Board LOADING Board . 254-17. Schematic Diagram LOADING Board .

8、254-18. Printed Wiring Board DISPLAY Board . 264-19. Schematic Diagram DISPLAY Board . 274-20. Printed Wiring Board POWER Board . 284-21. Schematic Diagram POWER Board . 294-22. Printed Wiring Boards AC SW/TRANSFORMER Boards . 304-23. Schematic Diagram AC SW/TRANSFORMER Boards . 315.EXPLODED VIEWS.

9、366.ELECTRICAL PARTS LIST. 404The 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

10、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 opti

11、calpick-up block. Therefore, when checking the laser diode emis-sion, observe from more than 30 cm away from the objective lens.MODEL IDENTIFICATION Back Panel SECTION 1SERVICING NOTESNOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNITPart No.HOW TO OPEN THE TRAY WHEN POWER SWITCHTURNS OFFThere

12、are two different methods to open the tray. Method-1Insert a screw driver (3) into the aperture of the unit bottom, andturn it in the direction of the arrow (to OUT direction).trayscrew driver (3)*To close the disc table, turn the screw driver (3) in the reverse direction (to IN direction).ModelPart

13、 No.AEP4-227-711-0sUK4-227-711-1strayABcam (CDM55)screw driver (3) Method-21 Insert a screw driver (3) into the aperture of the unit bottom,and move the cam (CDM55) in the direction of arrow A.2 Pull the tray in the direction of arrow B.ABOUT THE “E01” DISPLAY“E01” is displayed when the above occurs

14、 in communication witha system controller (IC605) and a display controller (IC203) at thetime of starting.In this case, please check soldering, disconnection, etc. of eachIC.Ver 1.15SECTION 2GENERALThis section is extracted frominstruction manual.6784 connector(CN992)4 connector(CN351)7 two claws2 l

15、oading panel assyqd front panel section9 knob (AMS)6 seven screws(BV/RING)qa connector(CN201)qs DISPLAY boardq; eight screws(BVTP2.6 8)7 two claws3 wire (flat type) (10 core)(CN601)5 holder1 Pull out the tray.(Refer to page 4, “HOW TO OPEN THETRAY WHEN POWER SWITCH TRANS OFF”.)q; five screws(BVTP2.6

16、 8) 8COVER (4095269)FRONT PANEL SECTIONNote: Follow the disassembly procedure in the numerical order given.SECTION 3DISASSEMBLY1 two screws1 two screws1 two screws1 two screws3 cover (4095269)229AUDIO/MAIN BOARDMECHANISM DECK (CDM55B-DVBU3)6 three connectors(CN301, 304, 351)2 two wires (flat type) (

17、18 core)(CN602, 603)3 two connectors(CN605, 610)4 five screws(BVTT3 8)5 MAIN board9 two PC board holders7 three screws(BV/RING)2 wire (flat type) (10 core)(CN601)2 two wires (flat type) (16 core)(CN608, 611)q; AUDIO board8 screw(BVTT3 8)1 Pull out the tray.(Refer to page 4, “HOW TO OPEN THE TRAY WHE

18、N POWER SWITCH TRANS OFF”.)5 screw(BVTT3 8)6 mechanism deck(CDM55B-DVBU3)4 connector(CN605)3 two wires (flat type) (18 core)(CN602, 603)2 loading panel assy1 Pull out the tray.(Refer to page 4, “HOW TO OPEN THE TRAY WHEN POWER SWITCH TRANS OFF”.)10TRAY1 Remove the tray. (Careful of the claw.)clawcla

19、w1111SECTION 4DIAGRAMS4-1.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.a: Through hole. b : Pattern from the side which enables seeing.(The other layers patterns are not ind

20、icated.)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. Main board is multi-layer printed board.However, the patterns of intermediate-l

21、ayer have not been in-cluded in the diagram. Indication of transistorCBThese are omitted.EQNote 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 otherwisespe

22、cified.f: internal component. 5 : fusible resistor. C : panel designation. U : B+ Line. V : B Line. Voltages and waveforms are dc with respect to groundunder no-signal conditions.no mark : STOP Voltages are taken with a VOM (Input impedance 10 M).Voltage variations may be noted due to normal produc-

23、tion tolerances. Waveforms are taken with a oscilloscope.Voltage variations may be noted due to normal produc-tion tolerances. Circled numbers refer to waveforms. Signal path.J: SACDc: CDI : DIGITAL OUT Circuit Boards LocationTRANSFORMER boardPOWER boardTK boardAUDIO boardMAIN boardDISPLAY boardLOAD

24、ING boardHP boardAC SW boardNote: The components identified by mark 0 or dotted linewith mark 0 are critical for safety.Replace only with part number specified.1212SCD-XB9404-2.PRINTED WIRING BOARD TK Board See page 11 for Circuit Boards Location.(Page 14)(Page 14)1313SCD-XB9404-3.SCHEMATIC DIAGRAM

25、TK Board See page 32 for Waveforms.The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number specified.(Page 16)(Page 16)1414SCD-XB9404-4.PRINTED WIRING BOARD MAIN Board (Component Side) See page 11 for Circuit Boards Location. SemiconductorL

26、ocationRef. No.LocationIC605G-7IC607F-4IC612D-6IC617B-6IC621B-7IC622D-3IC632D-9(Page 12)(Page 12)(Page 28)(Page 25)(Page 26)(Page 22)(Page 22)1515SCD-XB9404-5.PRINTED WIRING BOARD MAIN Board (Conductor Side) See page 11 for Circuit Boards Location. SemiconductorLocationRef. No.LocationD600G-3D604G-3

27、D605E-3D606G-2D607E-2D608G-2D609G-3D610G-3D612G-9IC600G-6IC606G-6IC609D-9IC610F-4IC613G-4IC614F-2IC615G-2IC616C-2IC618C-4IC619E-1IC620A-4IC623C-6IC624A-7IC625B-6IC627B-4IC628D-3IC629B-4IC630B-4Q601G-3Q602E-4Q603F-41616SCD-XB9404-6.SCHEMATIC DIAGRAM MAIN Board (1/6) See page 32 for Waveforms.(Page 29

28、)(Page 13)(Page 13)(Page 27)(Page 19)(Page 20)(Page 21)(Page20)(Page 20)(Page 17)(Page 18)1717SCD-XB9404-7.SCHEMATIC DIAGRAM MAIN Board (2/6) (Page 16)(Page 20)(Page 21)(Page 18)(Page 21)1818SCD-XB9404-8.SCHEMATIC DIAGRAM MAIN Board (3/6) See page 32 for Waveforms. See page 34 for IC Block Diagram.(

29、Page 16)(Page 17)(Page 19)(Page 20)(Page 21)(Page 23)(Page 23)(Page 25)1919SCD-XB9404-9.SCHEMATIC DIAGRAM MAIN Board (4/6) See page 32 for Waveform.(Page 16)(Page 18)(Page 20)2020SCD-XB9404-10. SCHEMATIC DIAGRAM MAIN Board (5/6) (Page 16)(Page 19)(Page 17)(Page 16)(Page 16)(Page 18)(Page 21)2121SCD-

30、XB9404-11. SCHEMATIC DIAGRAM MAIN Board (6/6) See page 32 for Waveforms. See page 34 for IC Block Diagram.(Page 17)(Page 16)(Page 17)(Page 20)(Page 18)2222SCD-XB9404-12. PRINTED WIRING BOARD AUDIO Board See page 11 for Circuit Boards Location. SemiconductorLocationRef. No.LocationD302C-2D303F-2D321E

31、-13IC301E-17IC302E-11IC303F-11IC304C-11IC305B-11IC306C-19IC307E-6IC308A-6IC309C-18IC331C-3IC352A-16IC401F-15IC402D-9IC403D-7IC501C-14IC502B-9IC503B-7Q301F-1Q302F-2Q303F-3Q351A-19Q403C-2Q503C-2(Page 28)(Page 24)(Page 14)(Page 14)(Page28)2323SCD-XB9404-13. SCHEMATIC DIAGRAM AUDIO Board See page 32 for

32、 Waveforms. See page 34 for IC Block Diagrams.The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number specified.(Page 29)(Page 18)(Page 18)(Page 29)(Page 24)2424SCD-XB9404-14. PRINTED WIRING BOARD HP Board See page 11 for Circuit Boards Loc

33、ation.4-15. SCHEMATIC DIAGRAM HP Board (Page 22)(Page 23)2525SCD-XB9404-16. PRINTED WIRING BOARD LOADING Board See page 11 for Circuit Boards Location.4-17. SCHEMATIC DIAGRAM LOADING Board 05(OPEN/CLOSE)(Page 14)(Page 18)2626SCD-XB9404-18. PRINTED WIRING BOARD DISPLAY Board See page 11 for Circuit B

34、oards Location. SemiconductorLocationRef. No.LocationD201A-3IC201C-9IC202C-6IC203B-4IC271A-4Q201C-7Q202C-7Q203C-7(Page 14)(Page 28)2727SCD-XB9404-19. SCHEMATIC DIAGRAM DISPLAY Board See page 32 for Waveforms.(Page 29)(Page 16)2828SCD-XB9404-20. PRINTED WIRING BOARD POWER Board See page 11 for Circui

35、t Boards Location. SemiconductorLocationRef. No.LocationD901E-5D902E-5D903E-4D904E-4D905D-3D906D-3D907D-3D908D-3D909D-2D910D-2D911D-2D912D-2D913D-2D914D-2D915D-1D916D-1D917E-2D918E-1D919E-1D920E-1D921A-2D922A-3IC903B-5IC904C-3IC905C-1IC906C-5IC907C-2Q921A-2(Page 30)(Page 30)(Page 22)(Page 26)(Page 1

36、4)(Page 22)2929SCD-XB9404-21. SCHEMATIC DIAGRAM POWER Board The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number specified.(Page 27)(Page 16)(Page 23)(Page 23)(Page 31)(Page 31)3030SCD-XB9404-22. PRINTED WIRING BOARDS AC SW/TRANSFORMER B

37、oards See page 11 for Circuit Boards Location.TOTRANSFORMERBOARDTOAC SWBOARD(Page 28)(Page 28)3131SCD-XB9404-23. SCHEMATIC DIAGRAM AC SW/TRANSFORMER Boards The components identified by mark 0 or dottedline with mark 0 are critical for safety.Replace only with part number specified.(Page 29)(Page 29)

38、3232 Waveforms TK Board 1 IC001 el (TE) (CD PLAY)2 IC001 r; (FE) (CD PLAY)3 IC001 tf (SIGO) (CD PLAY)Approx.100 mVp-pApprox.60 mVp-pApprox.1.4 Vp-p2 IC607 yk (ADC1) (CD PLAY)3 IC607 yl (ADC0) (CD PLAY) MAIN Board 1 IC607 z/, (X2/CLKIN)4 IC605 tf (X0)5 IC617 5 (SDCK)3.5 Vp-p27 MHzApprox.60 mVp-pAppro

39、x.100 mVp-p3.5 Vp-p12.5 MHz4 Vp-p296 ns7 IC617 rh (BCKA)8 IC621 8 (X2Q)6 IC617 rs (BCKD)9 IC621 qa (2CK)q; IC623 12.1 Vp-p88.5 ns3.8 Vp-p177 ns3.7 Vp-p354 ns3.1 Vp-p177 ns3.4 Vp-p354 nsqa IC617 qf (MCKI)IC622 zxc (SCKI), IC623 8qs IC622 ql (RFIN2) (CD PLAY)qd IC622 oa (SDCK)2 IC301 rf (LVCKO2),IC309

40、 1 (CLK)3 IC301 rl (BCKI) AUDIO Board 1 IC301 qs (XOUT)4 IC301 t; (LRCKI)5 IC301 ta (SBCKI)6 IC309 5 (Q)qf IC622 z/, (BCLK)qg IC622 z/. (LRCK)2.9 Vp-p29.5 nsApprox.1.4 Vp-p3.8 Vp-p296 ns3.4 Vp-p354 ns3.5 Vp-p22.7 s1.7 Vp-p45 MHz3.2 Vp-p88.5 ns3.4 Vp-p354 ns3.5 Vp-p22.7 s3.4 Vp-p354 ns4.4 Vp-p177 ns3

41、32 IC203 ea (EXTAL) DISPLAY Board 1 IC201 tk (OSCO)4.1 Vp-p484 ns3.8 Vp-p8 MHz34 IC Block Diagrams MAIN Board IC621SN74LV74APWRIC628MSM54V16258BSL-40TS-K14123456713 12 111098VCCGNDCKCLRCKCLRQPRQQPRQDDNCA8A7A6A5A4VSSA0A1A2A3VCCVCCDQ0DQ1DQ2DQ3VCCDQ4DQ5DQ6DQ7WERASNC282627232425182019222121436587109VSSD

42、Q15DQ14DQ13DQ12VSSDQ11DQ10DQ9DQ84344414239403738353631I/OSELECTOROUTPUTBUFFERINPUTBUFFEROUTPUTBUFFERINPUTBUFFERSENSEAMPLIFIERCOLUMNDECODERSMEMORYCELLSWORDDRIVERSROWDECODERSCOLUMNADDRESSBUFFERSLCAS30UCAS29OEI/OCONTROLLERI/OCONTROLLER15 161711 14NC34 32ROWADDRESSBUFFERSINTERNALADDRESSCOUNTERREFRESHCON

43、TROLCLOCKTIMINGGENERATOR35 AUDIO Board IC309TC7W74FIC401, 501CXA8042AS6CLR7PR8VCC5QRSQ3Q2D4GND1CKQDC12345678910111213142827262524232221201918171615SWITCHINGCIRCUITCONSTANTCURRENTCIRCUITREFERENCEVOLTAGECIRCUITCONTROLCIRCUITI01+IN2IN2+NCIN1+IN1NCC4C3GND2VEE2VEE1C6C5CIREFI02NCI01I02+NCVCC2C2C1VCC1VREFV

44、CNTGND1RIREF36(1)COVER SECTIONSECTION 5EXPLODED VIEWSThe components identified bymark 0 or dotted line with mark0 are critical for safety.Replace only with part numberspecified. Items marked “*” are not stocked since theyare seldom required for routine service. Somedelay should be anticipated when o

45、rderingthese items. The mechanical parts with no reference num-ber in the exploded views are not supplied. Hardware (# mark) list and accessories andpacking materials are given in the last of theelectrical parts list.NOTE: -XX and -X mean standardized parts, so theymay have some difference from the

46、originalone. Color Indication of Appearance PartsExample:KNOB, BALANCE (WHITE) . . . (RED)Parts Color Cabinets Color773784564512#1#1Front panel sectionRef. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark1X-4952-805-1 PANEL ASSY, LOADING (BLACK)1X-4952-806-1 PANEL ASSY, LOADING (SILVER)

47、23-704-515-31 SCREW (BV/RING)34-210-291-01 SCREW (CASE3 TP2) (AEP: BLACK)34-210-291-11 SCREW (CASE3 TP2) (AEP: SILVER)34-210-082-01 SCREW (CASE) (UK)44-970-123-11 FOOT (F50180S) (BLACK)44-970-123-31 FOOT (F50180S) (SILVER)54-972-889-01 CUSHION61-792-598-11 WIRE (FLAT TYPE) (10 CORE)74-227-843-01 SCR

48、EW (TP), FLAT HEAD (AEP: BLACK)74-227-843-11 SCREW (TP), FLAT HEAD (AEP: SILVER)74-210-082-01 SCREW (CASE) (UK)* 84-997-138-02 COVER (4095269) (BLACK)* 84-997-138-42 COVER (4095269) (SILVER)37(2)FRONT PANEL SECTIONnot supplied#3not suppliedsupplied withJ601supplied with RV601#25858586664655152535455

49、63626156575859586054Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark514-227-839-01 PANEL, FRONT (BLACK)514-227-839-11 PANEL, FRONT (SILVER)524-227-834-01 KNOB (AMS) (BLACK)524-227-834-11 KNOB (AMS) (SILVER)533-354-931-01 KNOB (DIA. 10) (BLACK)533-354-931-41 KNOB (DIA. 10) (SILVER)5

50、43-354-981-01 SPRING (SUS), RING554-942-568-41 EMBLEM (NO. 5), SONY (for BLACK)554-942-568-61 EMBLEM (NO. 5), SONY (for SILVER)564-227-832-01 BASE (L), PANEL (BLACK)564-227-832-11 BASE (L), PANEL (SILVER)574-998-790-31 KNOB, POWER (BLACK)574-998-790-41 KNOB, POWER (SILVER)584-951-620-01 SCREW (2.6X8