Sony-SCD1-cd-sm 维修电路原理图.pdf
SERVICE MANUALFor Technical serviceUS ModelCanadian ModelAEP ModelSCD-1/777ES3.SERVICING NOTES.34.DISASSEMBLY-2.55.TEST MODE. 106.ELECTRICAL ADJUSTMENTS. 127.DIAGRAMS7-1.Notes for Printed Wiring Board andSchematic Diagram . 177-2.Printed Wiring Boards RF/SLD-FG/SLD-MOTBoards . 187-3.Schematic Diagram RF/SLD-FG/SLD-MOTBoards . 197-4.Printed Wiring Boards LOAD-CN/LOAD-MOT/LOAD-SW/STB Boards . 207-5.Schematic Diagram LOAD-CN/LOAD-MOT/LOAD-SW/STB Boards . 217-6.Printed Wiring Board MAIN Board(component side) . 227-7.Printed Wiring Board MAIN Board(conductor side) . 237-8.Schematic Diagram MAIN Board (1/7) . 247-9.Schematic Diagram MAIN Board (2/7) . 257-10. Schematic Diagram MAIN Board (3/7) . 267-11. Schematic Diagram MAIN Board (4/7) . 277-12. Schematic Diagram MAIN Board (5/7) . 287-13. Schematic Diagram MAIN Board (6/7) . 297-14. Schematic Diagram MAIN Board (7/7) . 307-15. Printed Wiring Board AUDIO Board . 317-16. Schematic Diagram AUDIO Board (1/2) . 327-17. Schematic Diagram AUDIO Board (2/2) . 337-18. Printed Wiring Boards BAL(SCD-1)/COAX/OPT/PIN/SW Boards . 347-19. Schematic Diagram BAL(SCD-1)/COAX/OPT/PIN/SW Boards . 357-20. Printed Wiring Boards DISPLAY/SW-L/SW-R Boards . 367-21. Schematic Diagram DISPLAY/SW-L/SW-R Boards . 377-22. Printed Wiring Boards AC/POWER Boards . 387-23. Schematic Diagram AC/POWER Boards . 397-24. IC Pin Function Description . 438.EXPLODED VIEWS. 509.ELECTRICAL PARTS LIST. 59TABLE OF CONTENTSRadioFans.CN 收音机爱 好者资料库2Notes 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.ATTENTION 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.CAUTIONUse of controls or adjustments or performance of proceduresother than those specified herein may result in hazardous ra-diation exposure.Laser component in this product is capable of emitting radiationexceeding the limit for Class 1.The following caution label is located inside the unit.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)1.5 k0.15 FACvoltmeter(0.75 V)To Exposed MetalParts on SetEarth GroundThe following caution label is locatedinside of the unit.For the customers in CanadaCAUTIONTO PREVENT ELECTRIC SHOCK, DONOT USE THIS POLARIZED AC PLUGWITH AN EXTENSION CORD,RECEPTACLE OR OTHER OUTLETUNLESS THE BLADES CAN BE FULLYINSERTED TO PREVENT BLADEEXPOSURE.For the customers in EuropeThis appliance is classified as a CLASS 1LASER product.The CLASS 1 LASER PRODUCTMARKING is located on the rear exterior.Fig. A.Using an AC voltmeter to check AC leakage.RadioFans.CN 收音机爱 好者资料库3SECTION 3SERVICING 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.MODEL IDENTIFICATIONNOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNITPart No. Back Panel ModelPart No.SCD-1: US, Canadian4-215-784-1sSCD-1: AEP4-215-784-2sSCD-777ES: AEP4-221-854-0sSCD-777ES: US, Canadian4-221-854-1sCHECKING METHOD OF MICROCOMPUTER ROMVERSION1.Set the CD1/CD2 switch on the remote commander to CD1.2.With the power turned on, press the CHECK button on theremote commander while pressing the TEXT button on theset.3.15-digit numeric value will be displayed, and the top 4 digits(left side) of the numeric value imply the microcomputer ROMversion.Example: If “200006100FFFF3C” is displayed, the ROM ver-sion is 2.000.4.To cancel the ROM version check mode, press the CHECKbutton on the remote commander while pressing the TEXTbutton on the set.DISPLAY OF TOC ERRORinsulatorOP mechanism section (BU-23)Any board to putconnect two jigs (extension cable J-2501-164-A) to the RF board (CN001, 002) and Main board (CN501, 502).SERVICE POSITIONIn checking the BU section, prepare two new jigs (extension cable J-2501-164-A: 1.00 mm 26 cores).DisplayContentsTOC ERROR *Illegal SACD disc (pirate edition)TOC ERROR *Not SACD (DVD disc etc.)4REPLACING OPTICAL PICK-UPHandling1) A red laser diode for Super Audio CD Player requires moreattention to static electricity than general infrared laser diodesfor CD.Because its durability to static electricity is far weaker thanthat of infrared laser diodes, always use an earth band whenhandling the optical pick-up block as service parts.2) As for the flexible board KHS-180A (RP) packed as serviceparts, the short lands have been soldered to protect from staticelectricity. Accordingly, remove solders when replacing opti-cal pick-up. (See Fig. 1)Fig. 1 Flexible board3) In handling the KHS-180A (RP), do not touch inhibited partsshown in Fig. 2, but grip the slide base bearing and U-shapedguide.Fig. 2 KHS-180A (RP)DVD short landCD short landSlide base bearingSkew sensorLens actuatorcoversObjective lensesU-shaped guideOEICLaser holderFlexible boardConnectorLaser couplerTouch inhibited parts Objective lens Skew sensor Laser holder Laser coupler Flexible board OEIC Lens actuator covers5OP MECHANISM SECTION (BU-23)MAIN BOARDNote: Follow the disassembly procedure in the numerical order given.SECTION 4DISASSEMBLY-22five screws(PS 3 5)1two connectors(CN701, 708)1five connectors(CN702-706)3MAIN boardOPTICAL PICK-UP(KHS-180A/J1N) (Page 7)RF BOARD (Page 7)2lag1screw (PS3 5)4two washers4two washers3two screws(B2.6 5)3two screws(B2.6 5)5Lift up OP mechanism section (BU-23).6two wires (flat type) (26 core)(CN501, 502)64six screws(RK4 8)3push (control block) (wire) switch2two claws2two claws1two connectors(CN452, 702)4six screws(RK4 8)5side plate (L)6four screws(BVTP3 10)8front panel section7screw (BVTT3 6)5side plate (R)7screw (BVTT3 6)FRONT PANEL SECTION (SCD-1)FRONT PANEL SECTION (SCD-777ES)4six screws(RK4 8)3push (control block) (wire) switch2two claws2two claws1two connectors(CN452, 702)4six screws(RK4 8)5side plate (R)6five screws(BVTP3 10)8front panel section7two screws(BVTT4 6)5side plate (L)7OPTICAL PICK-UP (KHS-180A/J1N)RF BOARD1OP-15 flexible print board(CN003)5bracket (OP) assy4holder (R)3holder (R2)2screw(PSW3 10)6two screws (B3 5)7retainer (OP) assy8leaf spring (Y)9optical pick-up(KHS-180A/J1N)1OP-15 flexible print board(CN003)5RF board4four spacers (3 5)3four screws(B3 10)2connector(CN005)2two connectors(CN004, 006)1wire (flat type) (14 core)(CN007)8SLED MOTOR ASSY SECTIONTILT MOTOR ASSY (M3)1five screws(B3 5)2cover (BU)3three poly-slider washers4gear (D)5gear (C)6gear (B)8SLD-MOT board7screw(B3 5)9three screws(B3 5)0sled motor assy section2bracket (tilt) assy4tilt motor assy (M3)3two precision screws(P2 2.5)1two screws(B3 5)9SPINDLE MOTOR BLOCKAPPLYING OIL AT REPLACEMENT OF MOTOR (SPINDLE) (M7)7sled shaft (main)6sled shaft (sub)4two shaft retainers (main)3two shaft retainers (sub)5spindle motor block2screw(B3 5)2screw(B3 5)2two screws(B3 5)1slide the spindle motor block toward the arrow.sled shaft (main)sled shaft (sub)When replacing the motor (spindle) (M7), apply a drop of oil to thesled shaft (sub) and the sled shaft (main) respectively.Notes:Do not attach oil to other than specified parts.Do not touch the lens and laser diode during work.Part NamePart NoFLOIL (946P)7-662-001-3710SECTION 5TEST MODE5-1. FLUORESCENT INDICATOR TUBE MODENote: Set the CD1/CD2 switch on the remote commander to CD1.Procedure:1.Press the ! button while shorting the BP (TEST MODE) onthe DISPLAY board with tweezers, etc. and turn on the power,so that the following operation will be executed automatically.(1) All segments from 1G to 19G light up in order, starting from1G.(2) Vertical one line (total 7) of all grids from 1G to 15G lights upin order, starting from the left.(3) Horizontal one line (total 5) of all grids from 1G to 15G lightsup in order, starting from the top.(4) Grids from 1G to 15G go off, and all segments from 16G to19G light up.2.With the set in the 1-(4) status, pressing any key on the remotecommander changes the display as shown below, and activatesthe key check standby mode.ARTISTMINSTEPINDEXCD1 CD2 CD33.When a key on the front panel is pressed, the correspondingsegment and LED light up. (See table below)key on setKey AttributeLighting segment (in 19 grids)Lightning LEDAEJECT20 bitTIMETIME24 bitTEXTTEXT_|_ (DIGITAL FILTER)DIGITAL OUTDIGITAL OUTDIGITAL OUTPUTFILTERFILTER_|_ (DIGITAL OUTPUT)SACD/CDSACD/CDNORMHPLAYWIDEPLAY LEDXPAUSESTD1234PAUSE LEDxSTOPDIGITAL FILTERlAMS-BACK16 bitCD LEDLAMS-FORWARDOFFSACD LED4.If “!%TEST-END!%” is displayed after the keys listedabove were all pressed, the key check terminated successfully.Note: As this test does not check the LEDs, check them visually.5.Press the ! button to turn the power off, and disconnect theplug from the socket.1G2G3G4G5G6G7G8G9G10G11G12G13G14G15G18G17G16G19G20G DISPLAY Board (Conductor Side) CN1002CN1001BP (TEST MODE)Geid Assignment115-2. ADJUSTMENT-1 MODEThis mode is a special mode used to perform overall adjustment,optical pick-up height adjustment, and service check.Note:1. Wrong setting method can cause a trouble.2. Never operate the set with the loading panel mounted, which otherwisecauses a trouble.Setting Method:1.With the power turned off, press the ! button while pressingthe DIGITAL OUT button and l button.2.Display of “bbb” implies that the set is now in the Adjust-ment-1 Mode.Resetting Method:Press the ! button to turn the power off, and disconnect the plugfrom the socket.5-3. ADJUSTMENT-2 MODEThis mode is a special mode used to perform CLV jitter check andusually movement check.Note:1. Wrong setting method can cause a trouble.2. Never operate the set with the loading panel mounted, which otherwisecauses a trouble.Setting Method:1.With the power turned off, press the ! button while pressingthe TIME button and H button.2.Display of “# OPEN #” implies that the set is now in the Ad-justment-2 Mode.Resetting Method:Press the ! button to turn the power off, and disconnect the plugfrom the socket.Adjustment item*1: Disc check listDisplayResult of Disc CheckDiscchk DO SLNo discDiscchk D1 SLSLDiscchk D2 CDCDDiscchk D3 CDHybrid CD layerDiscchk D3 HDHybrid HD layerDiscchk D4 D0DL L0 layerDiscchk D4 D1DL L1 layerCodesContentsRemarksDisc01LD ON/OFFCD, SL, DL02Spindle ON/OFFCD, SL, DL03Forcus SearchCD, SL, DL04Forcus Servo ON/OFFCD, SL, DL05Track Servo ON/OFFCD, SL, DL06CLV ONCD, SL, DL07Sled Servo ON/OFFCD, SL, DL22Tilt Servo ON/OFFCD, SL, DL23Tilt BiasUpCD, SL, DL24Tilt BiasDownCD, SL, DL30Disc CheckCD, SL, DL5: Thresholdscheck Go60Overall Adjustment9: No thresholdsCD, SL, DLcheck0: Cancel61Result Display1: Proceed2: ReturnCD, SL, DL62Adj. Value Clear9: Go0: CancelCD, SL, DLPLAYPLAYCD, SL, DLPAUSEPAUSECD, SL, DLSTOPSTOPCD, SL, DLNEXTNEXTCD, SL, DLPREVPREVCD, SL, DLSACD selectFILTERFocus Search/PLAY(SACD/CD key)SLCD select(SACD/CD key)CDNote:1. Selection of an adjustment item where no disc is present could damagethe optical pick-up.2. Do not use other than above listed codes.*1Adjustment-1 Mode ListNote: Set the CD1/CD2 switch on the remote commander to CD1.Traverse check, S curve check,Adjustment-1RF level check, optical pick-upModeheight adjustment, and see contents ofAdjustment-1 Mode list.Adjustment-2CLV jitter check and usuallyModemovemant check126.Press the H button.7.Press the - button and 7 button, and the - button and 5button on the remote commander successively to turn off thetracking servo.8.Check that the waveform on oscilloscope is within the levelA and B specifications.9.After checking, press the x button.10. Repeat steps 3 through 9 respective discs.11. Press the ! button to turn the power off.Specified Value:DiscABSATD-S2SATD-S31.3 to 2.4 Vp-p- 0.1 to +0.1 VTCD-784bbb CD1 DiscchkXXXXDisc type (refer to Disc check list (page 11)Procedure:1.Connect an oscilloscope to the TP516(TE) and TP501(VC) onthe MAIN board.2.Set the Adjustment-1 Mode. (See 5-2. Adjustment-1 Mode inSECTION 5 (page 11)3.Set a disc (SATD-S2, SATD-S3, or TCD-784).4.Press the 3 button and - button on the remote commanderto make the disc type checked.Note: If the disc check was made in the Adjustment-1 Mode, pressinganother button immediately after pressing the 3 and - buttonson the remote commander could cause the microcomputer to runout of control, thus requiring extreme care.5.Confirm that the disc was checked.SECTION 6ELECTRICAL ADJUSTMENTSNote on Adjustment1.When the following parts were replaced, adjust and check theitems marked with a in the given order.OpticalIC on RF orSpindleAdjustment & checkpick-upMAIN boardmotor (M7)1. Optical Pick-up Height Adjustmentaa2. Overall Adjustmentaa3. Traverse Checka4. S Curve Checka5. RF Level Checka6. CLV Jitter Checka2.Adjustment jigsThe following jigs are exclusively
