Denon-DCD710AE-cd-sm维修电路原理图.pdf

D&M Holdings lnc.eCopyright 2009 D&M Holdings Inc. All rights reserved.WARNING: Violators will be prosecuted to he maximum extent possible.SERVICE MANUALCD PLAYERMODELJPE3E2EKE2AE1CE1KEUTDCD-710AE? ?Ver. 2For purposes of improvement, specifications and design are subject to change without notice.Please use this service manual with referring to the operating instructions without fail.Some illustrations using in this service manual are slightly different from the actual set.S0009-0V02DM/DG0911Please refer to theMODIFICATION NOTICE.RadioFans.CN 收音机爱 好者资料库2DCD-710AEPlease heed the points listed below during servicing and inspection.Heed the cautions!Spots requiring particular attention when servicing, suchas the cabinet, parts, chassis, etc., have cautions indicatedon labels or seals. Be sure to heed these cautions and thecautions indicated in the handling instructions.Caution concerning electric shock!(1) An AC voltage is impressed on this set, so touching in-ternal metal parts when the set is energized couldcause electric shock. Take care to avoid electric shock,by for example using an isolating transformer andgloves when servicing while the set is energized, un-plugging the power cord when replacing parts, etc.(2)There are high voltage parts inside. Handle with extracare when the set is energized.Caution concerning disassembly andassembly!Though great care is taken when manufacturing parts fromsheet metal, there may in some rare cases be burrs on theedges of parts which could cause injury if fingers aremoved across them. Use gloves to protect your hands.Only use designated parts!The sets parts have specific safety properties (fire resis-tance, voltage resistance, etc.). For replacement parts, besure to use parts which have the same properties. In par-ticular, for the important safety parts that are marked z onwiring diagrams and parts lists, be sure to use the desig-nated parts.Be sure to mount parts and arrangethe wires as they were originally!For safety reasons, some parts use tape, tubes or other in-sulating materials, and some parts are mounted away fromthe surface of printed circuit boards. Care is also taken withthe positions of the wires inside and clamps are used tokeep wires away from heating and high voltage parts, sobe sure to set everything back as it was originally.Inspect for safety after servicing!Check that all screws, parts and wires removed or discon-nected for servicing have been put back in their original po-sitions, inspect that no parts around the area that has beenserviced have been negatively affected, conduct an insu-lation check on the external metal connectors and betweenthe blades of the power plug, and otherwise check thatsafety is ensured.(Insulation check procedure)Unplug the power cord from the power outlet, disconnectthe antenna, plugs, etc., and turn the power switch on. Us-ing a 500V insulation resistance tester, check that the in-sulation resistance between the terminals of the powerplug and the externally exposed metal parts (antenna ter-minal, headphones terminal, microphone terminal, inputterminal, etc.) is 1M or greater. If it is less, the set mustbe inspected and repaired.Concerning important safetypartsMany of the electric and structural parts used in the sethave special safety properties. In most cases these prop-erties are difficult to distinguish by sight, and using re-placement parts with higher ratings (rated power andwithstand voltage) does not necessarily guarantee thatsafety performance will be preserved. Parts with safetyproperties are indicated as shown below on the wiring dia-grams and parts lists is this service manual. Be sure to re-place them with parts with the designated part number.(1) Schematic diagrams . Indicated by the z mark.(2) Parts lists . Indicated by the z mark.Using parts other than the designatedparts could result in electric shock, fires orother dangerous situations.SAFETY PRECAUTIONSThe following check should be performed for the continued protection of the customer and service technician.LEAKAGE CURRENT CHECKBefore returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassisresistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of thepower cord is less than 460 kohms, the unit is defective.LASER RADIATIONDo not stare into beam or view directly with optical instruments, class 3A laser product.CAUTIONCAUTIONRadioFans.CN 收音机爱 好者资料库3DCD-710AEDIMENSION3444341401476088202651367max50.5165.5493444DCD-710AEWIRE ARRANGEMENTIf wire bundles are untied or moved to perform adjustment or parts replacement etc.,be sure to rearrange them neatly as they were originally bundled or placed afterward.Otherwise, incorrect arrangement can be a cause of noise generation.Wire arrangement viewed from the topFront Panel sideBack Panel side5DCD-710AEDISASSEMBLY Disassemble in order of the arrow of the figure of following flow. In the case of the re-assembling, assemble it in order of the reverse of the following flow. In the case of the re-assembling, observe attention of assembling it.About the photos used for descriptions in the “DISASSEMBLY” section. The direction from which the photographs used herein were photographed is indicated at Direction of photograph: * at the left of the respective photographs. Refer to the table below for a description of the direction in which the photos were taken. Photographs for which no direction is indicated were taken from above the product.TOP COVERDOORCD MECHANISM ASSYAUDIO/POWER PCBRefer to DISASSEMBLY 1.DOORRefer to DISASSEMBLYRefer to EXPLODED VIEWRefer to EXPLODED VIEW 3.CD MECHANISM ASSYAUDIO/POWER PCBDOORRefer to EXPLODED VIEW (Ref. No. of EXPLODED VIEW : 1-1) (Ref. No. of EXPLODED VIEW : 9)CD MECHANISM ASSY (Ref. No. of EXPLODED VIEW : 16)FRONT PANEL ASSYREAR PANELRefer to DISASSEMBLY 2.FRONT PANEL ASSYMAIN PCB ASSYRefer to EXPLODED VIEWRefer to EXPLODED VIEWRefer to EXPLODED VIEWREAR PANELDISPLAY PCBMAIN PCB ASSY (Ref. No. of EXPLODED VIEW : 12) (Ref. No. of EXPLODED VIEW : 1-2) (Ref. No. of EXPLODED VIEW : 2)H/P PCB (Ref. No. of EXPLODED VIEW : 1-3)MOMS PCBPOWER TRANS (Ref. No. of EXPLODED VIEW : 1-4)Refer to EXPLODED VIEWUSB PCBPOWER TRANS (Ref. No. of EXPLODED VIEW : 1-5) (Ref. No. of EXPLODED VIEW : 21)LED PCB (Ref. No. of EXPLODED VIEW : 1-6)The viewpoint of each photograph(photography direction)View from aboveFront sideDirection of photograph: A6DCD-710AE1. DOOR(1) Take off the Chucking plate after removing screws.(2) Open the CD tray by turning the Drive gear clockwise.(3) Detach the DOOR.TOP COVERDOORProceeding : Chucking plateDrive gear CD trayDOOR7DCD-710AE2. FRONT PANEL ASSY(1) Remove the screws.(2) Cut the clamp bands, disconnect the connector wires and FFC Cable Remove the screws.TOP COVERDOORFRONT PANEL ASSYProceeding : View from bottomcutCX73BN31FFC CableBN33CN51Please refer to EXPLODED VIEW for the disassembly method of each PCB included in FRONT PANEL ASSY.8DCD-710AE3. CD MECHANISM ASSY(1) Cut the clamp bands, disconnect the connector wires. Remove the screws. (2) Laser short-circuit in Pick-up of CD MECHANISM, then disconnect the FFC Cable.TOP COVERDOORCD MECHANISM ASSYProceeding : cutcutCN53BN33?Soldering place FFC CableDirection of photograph: ALaser short-circuit9DCD-710AEDISASSEMBLY OF MECHANIC(Follow the procedure below in reverse order when reassembling.)Caution : The optical pickup can damaged by sassily by static electricity charged on human body. Take necessary anti-static measures when repairing around the optical pickup.1. Chucking plate(1) Remove 2 top screws, then detach the Chucking plate.(2) Detaching the Chucking pulley and chucking yoke by removing the 3 hooks, when abandoning CD MECHA assy.2. CD trayWhen abandoning CD MECHA assy, please detach the CD tray.(1) Detach the Sw pin on the CD tray.(2) Open the CD tray by turning the Drive gear clockwise.(3) Open the Stopper as shown in the fig., then detach CD tray.Chucking yokeChucking plateChucking pulleyScrewsMugnetStopperStopperSw pinCD trayDrive gear?10DCD-710AENote Handling and Replacement of the Laser pick-up1. Protection of the LDShort a part of the LD circuit by soldering. After connection to a circuit, remove the short solder.2. Precautions when handling the laser CD mechanism Handle the laser pick-up so that it is not exposed to dust. Do not leave the laser pick-up bare. Be sure to cover it. If dust adheres on lens of the pick-up, blow it off with a blower brush. Do not shock the laser pick-up. Do not watch the light of the laser pick-up.3. Cautions on assembling and adjustment Be sure that to the bench, jig, head of soldering iron (with ceramic) and measuring instruments are well grounded. Workers who handle the laser pick-up must be grounded. The finished mechanism (prior to anchoring in the set) should be protected against static electricity and dust. The mecha-nism must be stored that damaging outside forces are not received. When carrying the finished mechanism, hold it by the chassis body For proper operation, storage and operating environment should not contain corrosive gases. For example H2S, SO2, NO2, CI2 etc. In addition storage environment should not have materials that emit corrosive gases especially from silicic, cyanic, formalin and phenol group. I the mechanism or the set, existence of corrosive gases may cause no rotation in motor.4. Determining whether the laser pick-up is defectiveMeasure the waveform at RFO-VC on MCU P.W.B. Unit .( For measuring points and waveforms, see pages 21.) The laser pick-up is OK if the amplitude level of the measured RFO waveform is between 0.4 and 1.1 Vp-p, defective oth-erwise.Protective soldering place for laser diode.11DCD-710AESPECIAL MODENoKey nameFunctionDisplay1Service mode POWER switch is turned to on while pressing the5 and 2 button same time on DCD-710AE.(Model name display)1.1Version No. of main -com Display mode Press the 9 button.* : Version number of main -com1.2Version No. of USB -com Display mode Press the 9 button while version No. of main-com is displayed.* : Version number of USB -com1.3FLD check mode When display is version No. of USB -com andthe 9 button is pressed, turn on the entire dis-play is flashing with an interval of about 1 second. Press the 9 button again in the turn on eachgrid of FLD. (Each grid is displayed at interval of 1second.)1.4Input button name Display mode When display is each grid of the FLD check modeand the 9 button is pressed, display name ofthe pressing button. Turn off the POWER switch to clear this mode.2CD test mode POWER switch is turned to on while pressing the5 and 2 button same time on DCD-710AE.(Entering the Service mode) Press the /1 3 and 2 button same time whileservice mode.(CD TEST MODE display) 13 flashing2.1Disc loading Press the 5 button to open the tray. Set a disc on the tray, then press the 5 buttonagain to close the tray.2.2Servo check Press the /1 3 button. Execute the followingsteps. qLD ON (with servo still stopped)wFOCUS ON (disc rotation, tracking off)If no disc loaded, retry then stop. eCLV ON13 flashing qweD D-710AEVer *USB_Ver *P AY/PAUSEMAIN KEYOPEN/CLOSEREMN KEY00 CD TEST MODE01D ON02Foc s ON03V ON12DCD-710AE2.2Servo checkrTRACKING ONt SUB CODE readout (playback sound output) The BER (Block Error Rate) generated in 1seconds time is displayed on the upper tier ofthe display. The playback position (IN/MID/OUT) can bechanged by pressing the 8 or 9 button. The count of the errors that could not becorrected with the C1 error correction system isdisplayed.y When display is as in t and the /1 3 button ispressed, conduct BER (Block Error Rate)display for 2 seconds. The BER (Block Error Rate) generated in 10seconds time is displayed of the display.bPress /1 3 button continuously for over 1second to switch directly to SUB CODE readoutin step t.rtINMIDOUT# : B.E.R., : T.No, XX:XX : TimeyPPP : Playback position (IN/MID/OUT)# : 1 seconds B.E.R., *: 10 seconds B.E.R.2.3Pickup movementIn the stop mode, pickup moves in REV (inwards)or FWD (outwards) direction when 8 or 9button pressed. When 8 button pressed, move to stopoperation after detection that inner switch hasturned on. Pickup movement stops when button released.(Pickup moves while button is pressed.)Continuous display of previous time2.4StopWhen 2 button is pressed, play operation andservo stop. After stopping, conduct reading of auto adjustvalues. 13 flashing2.5All servo onWhen 2 and 5 button is pressed, all servos turnon, auto adjustment is performed and switch toplayback operation. (Playback sound output)(NOTE)When the 2 button is pressed for over 1second while the laser turns on and the lasercurrent is measured.13 flashing : T.No, XX:XX : TimeNoKey nameFunctionDisplay04 Tracking ONINERR #05TrXX:XXMIDERR #05TrXX:XXOUTERR #05TrXX:XXPPPERR #ERR *00D TEST MODETrXX:XX13DCD-710AE2.6Laser current is displayWhen the 2 button is pressed for over 1 secondwhile the DCD-710AE is in the stop mode, thelaser turns on and the laser current is measured.The laser drive current undergoes A/Dconversion for calculation. Decimal values arediscarded.The first current value is measured 3 secondsafter the laser turns on.The current value is updated every 3 seconds.Press the 2 button, CD test mode display (2)reappears.Stored data is not cleared, even when the DCD-710AE is reset.q Overwriting the stored dataWhen the /1 3 button is pressed for over 5seconds while the laser current is displayed, thecurrent value is stored in the EEPROM(overwriting the stored data).Once rewriting is completed, the display in 2.6reappears. 13 flashingXX : Stored data : EEPROM Stored valueYY : Current valueq2.7Adjustment value displayPress the 2 button after executing the servo autoadjustment.When 9 button is pressed, the adjustmentvalues are displayed in the following order. qFOCUS BALANCEwFOCUS GAINeTRACKING BALANCErTRACKING GAINtFOCUS OFFSETyTRACKING OFFSET13 flashing q XX : Adjustment valuewXX : Adjustment valueeXX : Adjustment valuerXX : Adjustment valuetXX : Adjustment valueyXX : Adjustment valueNoKey nameFunctionDisplayS/C:XXmA/ YYmALASER CURRENTSTOREDLASER CURRENTXXFOS BA AN EXXFOCUS GAINXXTRACKING BALANCEXXTRACKING GAINXXFOS OFFSETXXTRA KINGFFSET14DCD-710AE2.7Adjustment value displayuRFRPiReturn to q.(Note) If auto adjustment is not completed, propervalues are not displayed. uXX : Adjustment value2.8Accumulated laser on time displayWhen the DISC/USB and 5 button is pressedwhile the DCD-710AE is in the stop mode, theaccumulated laser on time is displayed.The laser drive times are added and the result isdisplayed.One count corresponds to 10 minutes. (Valuesunder 10 minutes are discarded.)Count values are stored in the EEPROM every 10minutes.The accumulated laser on time is displayed inhours.Laser ON/OFF is monitored and counted. Press the 2 button, CD test mode display (2)reappears.The count values are not cleared, even when theset is reset.Minimum display specification No. digits stored in EPR