Sony-SCDCE775-sacd-sm 维修电路原理图.pdf

SERVICE MANUALSUPER AUDIO CD PLAYERUS ModelCanadian ModelSCD-CE775Ver 1.0 2001.05SPECIFICATIONSModel Name Using Similar MechanismNEWCD Mechanism TypeCDM59A-DVBU5ABase Unit NameDVBU5AOptical Pick-up NameKHM-230AAA9-873-915-11Sony Corporation2001E0500-1Home Audio CompanyC 2001.5Shinagawa 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 distortion rate0.0020 % or lessWow and flutterValue of measurable limit (0.001 %W. PEAK) or lessWhen a CD is playedFrequency response2 Hz to 20 kHzDynamic range98 dB or moreTotal harmonic distortion rate0.0025 % or lessWow and flutterValue of measurable limit (0.001 %W. PEAK) or lessOutput connector*Output only the audio signals of the CDGeneralLaserSemiconductor laser(SACD: = 650 nm)(CD: = 780 nm)Emission duration: continuousLaser radiant power: 5.47 uW at 650 nm*These output is the value measured at a distance of about 200mm from the objective lens surface on the optical pick up.Power requirements120 V AC, 60 HzPower consumption25 WDimensions (w/h/d)430 108 400 mm(17 4 1/4 15 3/4 in.)incl. projecting partsMass (approx.)5.9 kg (13 lbs 1 oz.)Supplied accessories10 mWLoad impedanceANALOG OUTDIGITAL (CD)OUT OPTICAL*PhonojacksJack type2 Vrms(at 50 kilohms)Squareopticaloutputconnector18 dBmOver 10 kilohmsLight emittingwave length:660 nmOutput level( )PHONESStereophone jack32 ohmsDesign and specifications are subject to change without notice. Audio connecting cordphono jack 2 (Red and White) y phono jack 2 (Red and White) (2)phono jack 1 (Black) y phono jack 1 (Black) (2) Monaural (2P) mini plug cord (1) (Connecting cord forCONTROL A1 ) (supplied for Canadian models only) Remote commander (remote) RM SC500 (1) R06 (size AA) batteries (2)RadioFans.CN 收音机爱 好者资料库2SCD-CE775TABLE OF CONTENTS1.SERVICING NOTES.42.GENERAL.63.DISASSEMBLY3-1.Disassembly Flow .93-2.Case (409538) . 103-3.Front Panel Section . 103-4.CD Mechanism Deck (CDM59A-DVBU5A) . 113-5.AUDIO Board . 113-6.POWER Board . 123-7.MAIN Board . 123-8.Base Unit (DVBU5A) . 133-9.Table Assy . 133-10. SENSOR Board. 143-11. LOADING MOTOR Board . 144.ASSEMBLY. 155.TEST MODE. 166.DIAGRAMS6-1.Block Diagram RF/SERVO Section . 306-2.Block Diagram SERVO Section . 316-3.Block Diagram MAIN Section . 326-4.Block Diagram AUDIO Section . 336-5.Block Diagram DISPLAY/KEY CONTROL/POWER SUPPLY Section . 346-6.Notes for Printed Wiring Boards andSchematic Diagrams . 356-7.Printed Wiring Board RF Board . 366-8.Schematic Diagram RF Board . 376-9.Printed Wiring Boards MOTOR/SENSOR Section . 386-10. Schematic Diagram MOTOR/SENSOR Section . 396-11. Printed Wiring Board MAIN Board (Component Side) . 406-12. Printed Wiring Board MAIN Board (Conductor Side) . 416-13. Schematic Diagram MAIN Board (1/5) . 426-14. Schematic Diagram MAIN Board (2/5) . 436-15. Schematic Diagram MAIN Board (3/5) . 446-16. Schematic Diagram MAIN Board (4/5) . 456-17. Schematic Diagram MAIN Board (5/5) . 466-18. Schematic Diagram AUDIO/HEADPHONE Boards . 476-19. Printed Wiring Board AUDIO Board (Component Side) . 486-20. Printed Wiring Boards AUDIO (Conductor Side)/HEADPHONE Boards . 496-21. Printed Wiring Boards DISPLAY/KEY/LED Boards . 506-22. Schematic Diagram DISPLAY/KEY/LED Boards . 516-23. Printed Wiring Boards POWER/REG Boards . 526-24. Printed Wiring Boards POWER SW/PT Boards . 536-25. Schematic Diagram POWER/POWER SW/PT/REG Boards . 546-26. IC Pin Function Description . 637.EXPLODED VIEWS7-1.Case Section . 797-2.Front Panel Section . 807-3.Chassis Section . 817-4.CD Mechanism Deck Section-1(CDM59A-DVBU5A). 827-5.CD Mechanism Deck Section-2(CDM59A-DVBU5A). 837-6.Base Unit Section (DVBU5A). 848.ELECTRICAL PARTS LIST. 85RadioFans.CN 收音机爱 好者资料库3SCD-CE775This 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.4SCD-CE775The 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.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.CHECKING SIGNALS OF CD SECTIONEfficiency to check each signal of CD section is increased whenthe test points on the MAIN board are used.Refer to 5-8. WAVEFORMS CHECK (28 page)NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNITSECTION 1SERVICING NOTEStabletapering driver*To close the disc table, turn the tapering driver in the reverse direction (to IN direction).HOW TO OPEN THE DISC TABLE WHEN POWERSWITCH TURNS OFFInsert a tapering driver into the aperture of the unit bottom, andturn it in the direction of the arrow (to OUT direction).5SCD-CE775RESETTING OPERATION AT POWER ONIf the power is turned on with a disc loaded in the set, a sequence of operation as shown below will be performed.(The operation varies depending on the type of disc) Condition: continue mode(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. Stop6SCD-CE775Rear Panel Parts Descriptions1 ANALOG 2CH OUT L/R jacks (5)Connect to an audio component (stereo/2 channel)using the audio connecting cord.2 ANALOG 5.1CH OUT jacks (4)Connect to an amplifier equipped with the 5.1CHinput jacks (Multi-channel amplifier, AV amplifier,etc.) using the audio connecting cords.3 DIGITAL (CD) OUT OPTICAL connector (6)Connect to an audio component using an opticaldigital cable.4 CONTROL A1 jacks (6, 26)Connect to a Sony audio component using themonaural (2P) mini-plug cord.NoteOnly the audio signals of the CD can be output from theDIGITAL (CD) OUT connectors shown in 3. Those of the SuperAudio CD cannot be output through DIGITAL (CD) OUT.RL5 1CH OUTANALOGCONTROLA1OUTDGTAL (CD)OPT CALCENTERSUBWOOFERSURRFRONTLR2CH OUTFront Panel Parts Descriptions1 POWER switch (11)Press to turn on/off the player.2 DISC 15 button (12)Press to select the disc.3 Remote sensor (4)4 Display window (12)Shows various information.5 N button (12)Press to start play.6 X button (12)Press to pause play.7 x button (12)Press to stop play.8 EX-CHANGE button (15)Press to replace discs while playing a disc.9 DISC SKIP button (11)Press to select the disc.0 MULTI/2CH button (with an LED) (12)Press to select the playback area when the 2 channel +Multi-channel Super Audio CD is loaded. When youselect the Multi-channel playback area (page 11), theLED turns on.qa lAMSL dial (AMS: Automatic Music Sensor)(6, 12)When you turn the lAMSL dialcounterclockwise by one click, you go back to thepreceding track; when you turn the lAMSL dialclockwise by one click, you go to the succeeding track.qs CONTINUE button (11)Press to resume normal play from Shuffle Play orProgram Play.qd SHUFFLE button (19)Press to select Shuffle Play.qf PROGRAM button (20)Press to select Program Play.qg REPEAT button (18)Press repeatedly to play all tracks or only one track onthe disc.qh TIME/TEXT button (13)Each time you press the button, the playing time of thetrack, the total remaining time on the disc, or TEXTinformation appears in the display.qj Disc tray (11)Press A OPEN/CLOSE to open/close the disc tray.qk MULTI CHANNEL DECODING indicatorTurns on when you turn on the player, or when theMulti-channel Super Audio CD is loaded and selectthe Multi-channel playback area by pressing MULTI/2CH.ql m/M buttons (17)Press to locate a portion you want to play within atrack.w; MENU button (6)Press to enter the menu.wa SACD/CD button (with an LED) (12)Each time you press the button while the Hybrid disc(page 10) is loaded, the layer changes between an HD(SACD) layer (the LED turns on) and CD layer (theLED turns off).ws PHONES jackConnect the headphones.During playback of a Multi-channel Super Audio CD,the same signal that is output from the ANALOG5.1CH FRONT L/R jacks is output from the PHONESjack.wd PHONES LEVEL controlAdjust the headphones volume.wf A OPEN/CLOSE button (11)Press to open/close the disc tray.SECTION 2GENERALThis section is extracted frominstruction manual.7SCD-CE775Remote Parts DescriptionsCONTINUE SHUFFLEPLAY MODEPROGRAMSACD/CDMULTI 2CH1234567810/09SPACET ME/TEXTCAPSDISCREPEATCHECKAMSCLEARLEVEL10ENTERMODEDISPLAYINPUTNAMEDISC SK P+ADJCD1ABCDEF&!?JKLMNOGHITUVWXYZPQRSCD21 CONTINUE button (11)Press to resume normal play from Shuffle Play orProgram Play.SHUFFLE button (19)Press to select Shuffle Play.PROGRAM button (20)Press to select Program Play.2 NAME INPUT button (25)Press to enter the name input mode.3 DISC/CAPS button (16, 25)Press to select the disc.Press to select the capital letter in name input mode.4 Number buttons (16)Press to enter the track numbers.5i10 button (16)Press to locate a track numbered over 10.6 REPEAT button (18)Press repeatedly to play all tracks or only one track onthe disc.7 CHECK button (20)Press to check the programmed order.8 H button (12)Press to start play.X button (12)Press to pause play.x button (12)Press to stop play.9 AMS ./ (AMS: Automatic Music Sensor)buttons (16)Press to locate a specific track.0 m/M buttons (17)Press to locate a portion you want to play within atrack.qa DISC SKIP +/ buttons (16)Press to select the disc.qs CD1/2 (COMMAND MODE) switch (6)Select the command mode.qd DISPLAY MODE button (13)Press to turn off the information.qf SACD/CD button (12)Each time you press the button while the Hybrid disc(page 10) is loaded, the layer changes between an HDlayer (the SACD/CD LED turns on) and CD layer (theSACD/CD LED turns off).qg MULTI/2CH button (12)Press to select the playback area when the 2 channel +Multi-channel Super Audio CD is loaded. When youselect the Multi-channel playback area (page 11), theMULTI/2CH LED turns on.qh TIME/TEXT/SPACE button (13, 25)Each time you press the button, the playing time ofthe track, the total remaining time on the disc, orTEXT information appears in the display.Press to insert a space in name input mode.qj ENTER button (25)Press to decide the selection.qk CLEAR button (20)Press to delete a programmed track number.ql LEVEL ADJ button (23)Press to adjust the output level balance for the Multi-channel management function (page 24).8SCD-CE775Super Audio CD + CD (Hybrid disc)This disc consists of an HD layer and a CD layer. PressSACD/CD to select the layer you wa