Sony-SCDXE670-sacd-sm 维修电路原理图.pdf

SERVICE MANUALSUPER AUDIO CD PLAYERUS ModelCanadian ModelAEP ModelUK ModelSCD-XE670Ver 1.0 2001.07SPECIFICATIONSModel Name Using Similar MechanismNEWCD Mechanism TypeCDM66B-DVBU6ABase Unit NameDVBU6AOptical Pick-up NameKHM-230AAA9-873-176-01Sony Corporation2001G0500-1Home Audio CompanyC 2001.7Shinagawa Tec Service Manual Production GroupWhen a super audio CD is playedPlaying frequency range2 Hz to 100 kHzFrequency response2 Hz to 50 kHz (3 dB)Dynamic range103 dB or moreTotal harmonic distortionrate0.0020 % or lessWow and flutterValue of measurable limit(0.001 % W. PEAK) orlessWhen a CD is playedFrequency response2 Hz to 20 kHzDynamic range98 dB or moreTotal harmonic distortionrate0.0025 % or lessWow and flutterValue of measurable limit(0.001 % W. PEAK) orlessOutput connectorANALOGOUTDIGITAL(CD) OUTOPTICAL *PHONES*Output only the audio signals of the CDLoadimpedanceOver 10kilohmsWavelength:660 nm32 ohmsJacktypePhonojacksSquareopticaloutputconnectorStereophonejackOutput level2 Vrms(at 50 kilohms)18 dBm10 mWGeneralLaser:Semiconductor laser(SACD: = 650 nm)(CD: = 780 nm)Emission duration: continuousPower requirements120 V AC, 60 HzPower consumption26 WDimensions (w/h/d)430 95 285 mm(w/h/d)(17 x 3 3/4 x 11 1/4 in.)incl. projecting partsMass (approx.)3.9 kg (9 lbs 5 oz)Supplied accessoriesDesign and specifications are subject to changewithout notice.This player comes with the following items: Audio connecting cordphono jack 2 (Red and White) y phonojack 2 (Red and White) (2)phono jack 1 (Black) y phono jack 1(Black) (2) Remote commander RM-SX700 (1) Size AA (R6) batteries (2)RadioFans.CN 收音机爱 好者资料库2SCD-XE670TABLE OF CONTENTS1.SERVICING NOTES.42.GENERAL.63.DISASSEMBLY3-1.Disassembly Flow .83-2.Case (408226) .93-3.Front Panel Section .93-4.AUDIO Board, MAIN Board. 103-5. Mechanism Deck (CDM66B-DVBU6A) . 103-6.Base Unit (DVBU6A) . 114.TEST MODE. 125.DIAGRAMS5-1.Block Diagram RF/SERVO Section . 265-2.Block Diagram SERVO Section . 275-3.Block Diagram MAIN Section . 285-4.Block Diagram AUDIO Section . 295-5.Block Diagram DISPLAY/KEY CONTROL/POWER SUPPLY Section . 305-6.Note for Printed Wiring Boards andSchematic Diagrams . 315-7.Schematic Diagram RF Board . 325-8.Printed Wiring Boards RF/LOADING Boards . 335-9.Printed Wiring Board MAIN Board (Component Side) . 345-10. Printed Wiring Board MAIN Board (Conductor Side) . 355-11. Schematic Diagram MAIN (1/5)/LOADING Boards . 365-12. Schematic Diagram MAIN Board (2/5) . 375-13. Schematic Diagram MAIN Board (3/5) . 385-14. Schematic Diagram MAIN Board (4/5) . 395-15. Schematic Diagram MAIN Board (5/5) . 405-16. Schematic Diagram AUDIO/HEADPHONE Boards . 415-17. Printed Wiring Board AUDIO Board (Component Side) . 425-18. Printed Wiring Boards AUDIO (Conductor Side)/HEADPHONE Boards . 435-19. Printed Wiring Boards DISPLAY/KEY Boards . 445-20. Schematic Diagram DISPLAY/KEY Boards . 455-21. Printed Wiring Boards POWER/POWER SW/PT Boards . 465-22. Schematic Diagram POWER/POWER SW/PT Boards . 475-23. IC Pin Function Description . 556.EXPLODED VIEWS6-1.Case Section . 706-2.Front Panel Section . 716-3.Chassis Section . 726-4.Mechanism Deck Section (CDM66B-DVBU6A) . 736-5.Base Unit Section (DVBU6A). 747.ELECTRICAL PARTS LIST. 75RadioFans.CN 收音机爱 好者资料库3SCD-XE670This label is located on the LEFT exterior.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 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.This appliance is classified as a CLASS 1LASER product.The CLASS 1 LASER PRODUCTMARKING is located on the rear exterior.The following caution label is locatedinside the unit.4SCD-XE670(1) CD 1.Sled reverse move (sled in) 2.Disc detect 3.IC setting for CD 4.Servo error signal offset auto adjustment 5.Spindle kick for LD on 6.LD on 7.Focus search 8.Focus servo on 9.Spindle kick 10. Spindle servo on 11. E-F balance auto adjustment 12. Tracking & sled servo on 13. Focus bias auto adjustment 14. Focus servo gain auto adjustment 15. Tracking servo gain auto adjustment 16. Jump to lead-in area 17. Read TOC 18. Stop(2) SACD (single layer) 1.Sled reverse move (sled in) 2.Disc detect 3.IC setting for SACD 4.Servo error signal offset auto adjustment 5.Spindle kick for LD on 6.LD on 7.Focus search 8.Focus servo on 9.Spindle kick 10. Spindle servo on 11. E-F balance auto adjustment 12. Tracking & sled servo on 13. Focus bias auto adjustment 14. Focus servo gain auto adjustment 15. Tracking servo gain auto adjustment 16. Jump to lead-in area 17. Read TOC 18. Stop(3) SACD (dual layer) 1.Sled reverse move (sled in) 2.Disc detect 3.IC setting for SACD 4.Servo error signal offset auto adjustment 5.Spindle kick for LD on 6.LD on 7.Focus search 8.Focus servo on (layer 0) 9.Spindle kick 10. Spindle servo on 11. E-F balance auto adjustment (layer 0) 12. Tracking & sled servo on (layer 0) 13. Focus bias auto adjustment (layer 0) 14. Focus servo gain auto adjustment (layer 0) 15. Tracking servo gain auto adjustment (layer 0) 16. Jump to lead-in area 17. Read TOC 18. Focus jump (layer 0tlayer 1) 19. E-F balance auto adjustment (layer 1) 20. Tracking & sled servo on (layer 1) 21. Focus bias auto adjustment (layer 1) 22. Focus servo gain auto adjustment (layer 1) 23. Tracking servo gain auto adjustment (layer 1) 24. Focus Jump (layer 1tlayer 0) 25. StopSECTION 1SERVICING NOTESThe 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.CLEANING OF OPTICAL PICK-UP LENSIn cleaning the lens of optical pick-up, use the air blower.Never use a cotton swab for cleaning the lens of optical pick-up,which otherwise causes a trouble.MODEL IDENTIFICATION Rear Panel RESETTING OPERATION AT POWER ONIf the power is turned on with a disc loaded in the set, a sequenceof operation as shown below will be performed.(The operation varies depending on the type of disc)Condition: continue modeNOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNITPART No.MODELPART No.AEP and UK models4-234-033-0US model4-234-033-2Canadian model4-234-033-45SCD-XE670HOW TO OPEN THE TRAY WHEN POWER SWITCH TURNS OFFDISPLAY BOARD SERVICE POSITIONIn checking the DISPLAY board, prepare jig (extension cable J-8000-024-A : 1.00 mm Pitch, 12 cores, Length 300 mm.)traytapering drivercam (66)1 Insert a tapering driver (3 mm in diameter) in the hole at the bottom of the unit,turn the cam (66) fully in the direction of arrow A.AMAIN board(CN706)DISPLAY board(CN801)Connect jig (extension cable J-8000-024-A)to the DISPLAY board (CN801) and MAIN board (CN706).6SCD-XE670SECTION 2GENERALThis section is extracted frominstruction manual.CHECK qg (18)CLEAR qh (18)Disc tray 6 (10)Display w; (11)MENU qj (10, 20)MULTI/2CH qk (9, 11)Multi-Channel indicator 7PHONE LEVEL qf (25)PHONES jack qdPLAY MODE 2 (17, 18)POWER 1 (10)Remote sensor ql (6)REPEAT 3 (16)SACD/CD 5 (9, 11)TIME/TEXT 4 (11)Front PanelRear PanelANALOG 2CH OUT L/R jacks 1 (8)ANALOG 5.1CH OUT jacks 2 (6)DIGITAL (CD) OUT OPTICAL jack 3 (8)Mains lead 4 (8)BUTTON DESCRIPTIONSlAMSL dial qs (10, 11, 14,15, 19, 20)A OPEN/CLOSE 8 (10, 18)H 9 (10, 15, 16, 17, 18)X 0 (11)x qa (11, 16, 19)m/M wa (15)7SCD-XE670Remote ControlAyB 8 (16)AMS ./ qa (14, 15, 17,22)CHECK 9 (18)CLEAR qk (18)CONTINUE 2 (17, 18)DISPLAY MODE 3 (12)ENTER qj (22)INDEX /. qd (15)LEVEL ADJ ql (22)MULTI/2CH qh (9, 11)Number buttons 5 (14, 18)PROGRAM qf (18)REPEAT 7 (16)SACD/CD qg (9, 11)SHUFFLE 1 (17)TIME/TEXT 4 (11)BUTTON DESCRIPTIONS10 6 (14, 18)H w; (10, 15, 16, 17, 18)X 0 (11)x wa (11, 16, 19)m/M qs (15)SCD-XE6708 This set can be disassembled in the order shown below.3-1.DISASSEMBLY FLOWSECTION 3DISASSEMBLY3-2. CASE (408226)(Page 9)3-3. FRONT PANEL SECTION(Page 9)3-6. BASE UNIT(DVBU6A)(Page 11)3-5. MECHANISM DECK(CDM66B-DVBU6A)(Page 10)3-4. AUDIO BOARD, MAIN BOARD(Page 10)SETSCD-XE6709 BOTTOM VIEW 1tapering driver24loading panel assy3two clawsNote:When the power supply does not turn on, rotate the cam with tepering driver (3 mm) as the figure shows, and the loading panel assy will be moved.qafront panel section9screw(BV/RING)6three connectors(CN453, 454, 881)0two claws8three screws(BVTP3 6)0two claws7lead with connector5wire (flat type) (12 core)(CN706)3-3.FRONT PANEL SECTIONNote: Follow the disassembly procedure in the numerical order given.3-2.CASE (408226)1two screws(BVTP3 8)332two screws (case 3 TP2)2two screws (case 3 TP2)4case(408226)SCD-XE670103-4.AUDIO BOARD, MAIN BOARD3-5.MECHANISM DECK (CDM66B-DVBU6A)3four screws(BV/RING)2four connectors(CN301, 304, 305, 306)1two wires (flat type) (19 core)(CN302, 303)6AUDIO board4screw(BVTT3 6)9three screws(BVTT3 6)5PC board holder7wire (flat type)(12 core) (CN706)8connector(CN703)9screw(BVTT3 6)0MAIN board8two connectors(CN704, 707)7wire (flat type)(30 core) (CN708)1tapering driver24loading panel assy5wire (flat type) (30core)(CN708)6connector(CN151)8CD mechanism deck(CDM66B-DVBU6A) BOTTOM VIEW 7three screws(BVTP3 8)3two clawsNote:When the power supply does not turn on, rotate the cam with tepering driver (3 mm) as the figure shows, and the loading panel assy will be moved.SCD-XE670113-6.BASE UNIT (DVBU6A)1floating screw (DIA. 12) 2 BOTTOM VIEW 3base unit (DVBU6A)base unit (DVBU6A)cam (66)12SCD-XE670SECTION 4TEST MODETest Mode Command ListThe contents of test mode are as follows.Note: Wrong operation in the test mode causes a trouble, thus requiring extreme care.LINE command (1X): Use mainly for a manufacturing line.No.NameDescriptionRemarks05DSP MON1XUGF, XPCK, C2PO outputted from IC509 (CD DSP)Not used for the servicing06DSP MON2MNT0, MNT1, MNT2, MNT3 outputted from IC509 (CD DSP)Not used for the servicing07DSP MON3RFCK, XPCK, XROF, GTOP outputted from IC509 (CD DSP)Electrical measurement,CD CLV jitter measurementSTANDARD command (1X): Use when the servo is applied by manual operation.No.NameDescriptionRemarks12LD ON/OFFThe laser diode is turned on or offOn or off are switched alternately13SPIN ON/OFFThe spindle motor is rotated with the regulated voltageOn or off are switched alternately14FSRV ON/OFFThe focus servo is turned on or offOn or off are switched alternately15TSRV ON/OFFThe tracking servo is turned on or offOn or off are switched alternately16CLV ON/OFFThe spindle SLV servo is turned on or offOn or off are switched alternatelyFocus and tracking servos must be already turned on17SSRV ON/OFFThe sled servo is turned on or offOn or off are switched alternatelyFocus, tracking and spindle servos must be already turned on18ALL SRV ONAll servos are turned on19ALL SRV OFFAll servos are turned offStop command in the test modeThis set automatically executes self-diagnosis and various checksby entering the test mode.Note: This set automatically makes various adjustments according to thetype of disc, thereby not requiring adjustment of the set when partswere replaced. However, be sure to execute 4-1. IC AND FLUO-RESCENT DISPLAY TUBE CHECK, 4-2. AUTO CHECK and 4-7. WAVEFORMS CHECK.Disc for Test ModeVarious checks of this set require the following discs.ModelType *1CategoryApplicationMODELSATD-S512 cm discAdjusted value check,(J-2501-215-A) SLReference discOperation check,SATD-S4Optical waveform check(J-2501-184-A)Not specifiedDL12 cm discOperation checkPATD-012Adjusted value check,(4-225-203-01)CD12 cm discOperation check,YEDS-18Reference discOptical waveform check(3-702-101-01)Not specifiedHYBRID 12 cm discOperation check*1 SL: Single LayerDL: Dual LayerSetting Method of Test ModeTurn the POWER switch on while pressing the AMS dial and the MENU button. Release the MENU button and the AMS dial in this order when “Test Mode Menu” isdisplayed on the fluorescent indicator tube. (If the AMS dial is released first, the test mode becomes active but “Test ModeMenu” is not displayed)Releasing Method of Test ModeTo release the test mode, turn the POWER switch off.Selection/Entry of Test ModeTo select and enter the “Test Mode Menu”, operate as follows.1.Rotate the AMS dial to select the menu, and pressthe AMS dial to enter.2.The test is switched on or off alternately each time the AMS dial is pressed.3.To return to the previous step, rotate the AMS dialto select the desired item, and p