Denon-DCD485-cd-sm维修电路原理图.pdf

《Denon-DCD485-cd-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Denon-DCD485-cd-sm维修电路原理图.pdf（45页珍藏版）》请在收音机爱好者资料库上搜索。

1、 BSERVICE MANUAL Some illustration using in this service manual is slightly from the actual set. MODEL DCD-485/685 STEREO CD PLAYERDCD-485DCD-685 Hi-Fi ComponentRadioFans.CN 收音机爱 好者资料库 2 SAFETY PRECAUTIONSSPECIFICATIONS SAFETY PRECAUTIONS The following check should be performed for the continued prt

2、ection of the customer and service technician. LEAKAGE CURRENT CHECK Before reterning the unit to the customer,make sure you make either (1) aleakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 miliamps, or if hte resistance from chassis to either side

3、 of the power cord is less than 460 kohms, the unit is detective. AUDIODCD-485DISCSREMOTE CONTROL UNITFUNCTIONS AND DISPLAYGENERAL CHARACTERISTICS434 (W) x 100 (H) x 285 (D) mm2 channelsDimensions:54.5 (W) x 140 (H) x 24.8 (D) mmExternal Dimensions:Number of Channels:Automatic searchi, programmed pl

4、ayback, repeat playback, manual search, auto space,time mode, auto edit, dimmer, random playback, pitch control (DCD-685 only)Functions:Remote Control System:Track number, time, music calendar and engaged modesDisplay:Headphones jackInfrared pulse systemRC-266Others:Mass:3.4 kgMass:85 g including ba

5、tteriesAC 230 V, 50 Hz Power Supply:3V DC; two R6P (standard size AA) dry cell batteriesPower Supply:Power consumption:11 W2 to 20 kHzFreqency Responese:0.2 to 2.0 VOutput Voltage:98 dB105 dBDynamic Range:Signal to Noise ratio:0.003 % (1 kHz)Harmonic distortion:102 dB (1 kHz)Separation:Below measura

6、ble limit:Compact Disc format( 0.001% W. peak)3.6 kg12 W100 dB110 dB103 dB (1 kHz)Wow and Flutter: Specifications and design are subject to change without notice for purpose of improvement.SPECIFICATIONSDCD-685RadioFans.CN 收音机爱 好者资料库 3 DISASSENBLY (Follow the procedure below in reverse order when re

7、assembling)1. Top Cover1. Top Cover1. Remove 4 screws 1 on both sides.2. Remove 2 screws 2 on the Rear Panel.3. Detach the Top Cover as shown in the fig.2. Front Panel2. Front Panel1. Remove 1 screw 3 on the Rear Panel and 1 screw 4 fixing Support Bracket (b). (only DCD-485)2. Take off the Mecha Cov

8、er after removing 2 screws 5 .Open the Tray by turning the Gear (a) clockwise,then detach the Loader Panel.3. Remove 3 screws 6 on the bottom edge of theFront Panel.4. Remove 2 screws 7 , at L/R ends of the FrontPanel and 1 screw 8 fixing Phone P.W.B.Support Bracket 44. Main P.W.B.4. Main P.W.B.1. R

9、emove 5 screws 10, 5 screws 11 on the RearPanel and detach it.2. Remove 3 screws 12 fixing the Main P.W.B.3. Unfasten 1 P.W.B. Holder to detach the MainP.W.B.4. Remove 1 screw and 2 screw fixing thePower P.W.B.5. Unfasten 1 P.W.B. Holder to detach the PowerP.W.B.3. CD Mecha. Unit3. CD Mecha. Unit1.

10、Remove 4 screws 9 fixing the CD Mecha.2. Unplug Connectors (b), (c) and FFC from eachsocket.3. Release the FFC from the Clamper. 5 CD TEST MODE? Setting of the test mode How to start the test mode: Turn on the power in the condition that CLOSE (Pin No. 3 ) and OPEN (Pin No. 4 ) of CX053 are being sh

11、orted. ( “01” is indicated on the DISPLAY) To exit from the test mode, turn off the power. (Refer to Fig. 1 “Test Point Layout”)Fig. 1 “Test Point” Layout * Laser light of the pickup is always emitted regardless of DISC loading in the test mode.You may lose your eyesight if you look into the laser d

12、irectly.So be careful enough when operating in the test mode.? Used DISC: A-BEX TCD784? Explanation of each button * Use only the buttons described below for operations while in the test mode,and dont push any other buttons.Names of buttonsOperationOPEN / CLOSE * Loads or unloads DISCPLAY * Emits la

13、ser light * Repeats search operation (No DISC condition: While its pressed) * Actuates focus servo (In case of DISC loaded) * Actuates tracking servoSTOP * Stops operationPAUSE * Performs auto adjustmentMANUAL SEARCHFORWARD / REVERSE * Moves pickup 6? How to check the test mode( 1 ) DISC discriminat

14、ion, adjustment * Insert DISC, and press the PAUSE button. * “06 Adj” is displayed, and discrimination of DISC size 8 cm/12 cm, discrimination ofDISC reflectance (CD, CD-R/CD-RW), adjustment of focus, tracking offset,and EF balance will be performed. (Adjusted values are not displayed: Refer to Fig.

15、 2, 3) Fig. 2 DISC discrimination, adjustment Fig. 3 (Case of CD-RW) Adjustment of EF balance * After completing the discrimination and adjustment, it becomes stop condition. * Once discrimination of DISC has been carried out in the “06 Adj” mode, discrimination of size and reflectance is no longer

16、made, and only adjustment will be performed.( 2 ) Checking of servo state * Press the PLAY button after performing above (1) “DISC discrimination, adjustment”. * “02 L on” is displayed, and the laser will start to light. (The pickup may vibrate with a rattling noise if DISC has been loaded, but this

17、 is not abnormal.) * Press the PLAY button again. * “03 F on”is displayed. DISC starts turning,and focus servo will be actuated. (Refer to Fig. 4, 5)FEOTEOHFDRFTEOTBSLDFEOTEOTEOHF 7 Fig. 4 In “03 F on” Fig. 5 In “03 F on” * Press the PLAY button again. * “04 t on” is displayed. Tracking, CLV, and sl

18、ide servo will be actuated. * Monitor HF signal using the test terminals, HF of CX053 (Pin No. 1 ) and VC of CX063 (Pin No. 5 : 2.5V ref. signal). Check that the signals amplitudeis 1.5V?0.3Vp-p. (Refer to Fig. 6) Fig. 6 In “04 t on”A ( A = 1.5 0.3 VP-P )HF 8 Wave-forms of each pointSPDSPDFEOTEODRFH

19、FSLDTEOSLDOPENCLOSESPDSPDTDTEOHFDRFSLDTEOFDWhen 12 cm DISCstartWhen 8 cm DISCstartWhen focus servoonTrack search (when forward)During PLAYWhen the trayOPENWhen 12 cm DISCstopWhen 8 cm DISCstopDuring PAUSETrack search (when reverse)Focus search (no DISC) 9 BLOCK DIAGRAMDCD-685 on yDCD-485 on yDCD-685

20、 on yRW SWFOCUSCO L DrvTRACK NGCO L DrvSL DEMtr DrvSP NDLEMtr DrvLOAD NGMtr DrvLA6995C104P CKUPFOCUSCO LTRACK NCO LMSL DEMSP NDLEMLOAD NGL D ODECD MECHAKSL-2130CCMNMOST-SWOPEN-SWCLOSE-SWASPLA9241MC101DSPLC78625EC102H/P AMPC315DACPCM1702C602/603D F LTERSM5841BSC703-COMPD78044FC2011U-3346-1MAIN UNITMU

21、TEMUTEDRFSLSUBCODECD/RWA/D NPUTFSEQKEYMATR XVFDFL601REMOTESENSORC702OPTOUT1U-3346-4H/P UN TCOTROL BUS1U-3346-3D SPLAYVR1U-3346-2POWERUN TROTALYENCODERS616CY271CX2718V-HB+VDDCONTROLXRST2DF&DACPCM1735C105VCOTC9246FC108XRST1D.MUTEMD2LD ONPOWER CONTM5290PC501POWERTRANSPT501ACNLETPOWER SW1U-3346-55VRESET

22、MUTECONTROLPLLBU2616FC107CONTROLDRVMUTE 10 NOTE FOR HANDLING OF LASER PICK-UP Description of the Components Description of the Components Label Label Pin Connector Pin Connectoryear(last figure)daymonthquality control No.Lot No.lop No.Oct. Nov. and Dec. are expressed by alphabetical letters of X, Y

23、and Z.101101LD drive currentquality controlThe expressed unit is by mA, with omission of the decimal point as for example, 56.5mA will be ex-pressed as 565, but the head of English letter meansthe control in the manufacturning plant.Pin No.DescriptionIN/OUT1PD ICVcIN2VccIN3EOUT4DOUT5AOUT6BOUT7COUT8F

24、OUTKSS- 213CKSS- 213CLot No.lopLot No.lopSlide rackOP Slide baseObject LensActuator coverPAL-2 Flexible boardLabelFlexible flat cable connectorZ-axisY-axis(Tangental direction)X-axis(Radial direction)+Z-axis direction+X-axis direction+Y-axis direction13579 11 13 15246810 12 14 16KSS-213CFlexible fla

25、t cable connectorPin No.DescriptionIN/OUT9GNDIN10LDLDIN11VRIN12PDOUT13FCS(+)IN14TRK(+)IN15TRK()IN16FCS()INLDPDIC14131211109876543211615TRACKINGLDPDIC+2.5V+5VSHORT LANDFOCUSING CAUTION: CAUTION: The soldered connecting portion must be bridged when removing CX161. 11 Caution for Handling the Laser Pic

26、k- up Caution for Handling the Laser Pick- upThe laser pick-up KSS-213C is assembled and preciselyadjusted using a sophisticated manufacturing process in ourplant. Do not disassemble or attempt to readjust it. Pleaseobserve the following instructions carefully in handling thepick-up.1. Handle with C

27、are1. Handle with Care(1) StorageDo not store the pick-up in dusty, high-temperatured orhigh-humidity environments.(2) Please take care for preventing from shock by fallingdown or careless handling.2. Laser Diode (LD)2. Laser Diode (LD)(1) Protect your eyesThe laser beam may damage the human eye, si

28、nce theintensity of the focused spot may reach 7103W/cm2 even if the intensity at the objective lens is 400Wmaximum. As the light beam spreads after focusedthrough the objective lens, it does not effect you in theplace as far as more than 30 cms. However, do not lookat the laser light beam either th

29、rough the objective lensdirectly nor another lens or a mirror.(2) Poison of AsSince the LD chip contains As (Arsenic), as GaAs +GaAlAs, as known as the poison, although the poison isrelatively weak, in comparing with others, e.g. As2O3,AsCl3 etc., and the amount is small, avoid putting thechip in ac

30、id or an alkali solution, heating it over 200 Cor putting it into your mouth.(3) Avoid surge current or electrostatic dischargeThe LD may be damaged or deteriorated by its ownstrong light if a large current is supplied to it, even if onlya short pulse.Make sure that there is no surge current in the

31、LD drivingcircuit by switches or else. Be careful to handle pick-upas it may be damaged in a moment by humanelectrostatic discharge. The pins of the LD are short-circuited by solder for protection during shipment.For safety handling of an LD, grounding the human body,measuring equipments and jig is

32、strongly recommended.And still it is further desirable to make use of mat on theplatform and floor for handling the LD.To open the short-circuit, remove the soldering quicklywith a soldering iron whose metal part is grounded.The temperature of the soldering iron should be less than320C (30W).3. Actu

33、ator3. Actuator(1) The performance of the actuator may be affected ifmagnetic material is located nearby, since the actuatorhas a strong magnetic circuit. Do not permit dust to enterthrough the clearance of the cover.(2) Cleaning the lensIt may change the specifications by attaching dust orash on th

34、e objective lens. Clean the lens with a cleaningpaper dampened with, not pressing lens with so muchstrength by the cleaning paper.4. Metal Bearing4. Metal BearingAs the metal bearing of Cu-compound sintered alloy isimpregnated with FROIL946P, never fail to supply thebushing with the same lubricant a

35、t the time of replacing thepick-up.5. Handling5. HandlingPlease handle the laser pick-up with holding the slide base.(resin molded part).When either a part of human body or some other things mayhappen to touch directly with the circuit part of P.W.Board, itmay cause deterioration, take careful atten

36、tion in handlingthis base.6. Deterioration6. DeteriorationAs KSS-213C comprises built-in RF Amp and APC circuit,resists stronger against external electrostatic damages thanthe former typed pickup. However, there is possibility ofpickup deterioration in the following cases.(1) Low HF level, or with g

37、reat numbers of jitters.(2) Tracking offset (EF Balance) is out of order (Refer to“Confirmation Method of Adjustment”for confirmation (1)and (2). 12 SEMICONDUCTORSPD78044FGF- 188- 3B9 (IC601)PD78044FGF- 188- 3B9 (IC601)12425404164658064 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43

38、42 4112345678910 11 12 13 14 15 16 17 18 19 20 21 22 23 244039383736353433323130292827262565666768697071727374757677787980PD78044FGF-188-3B9P113/FIP21P112/FIP20P111/FIP19P110/FIP18P107/FIP17P106/FIP16VLOADP105/FIP15P104/FIP14P103/FIP13P102/FIP12P101/FIP11P100/FIP10P197/FIP9P196/FIP8P195/FIP7P33/TI1P

39、34/TI1P35/PCLP36/BUZP37X2X1VssXT2P04/XT1AVRESAVDDP10/AN10P11/AN11P12/AN12P13/AN13P114/FIP22P115/FIP23P116/FIP24P117/FIP25P120/FIP26P121/FIP27P122/FIP28P123/FIP29P124/FIP30P125/FIP31P126/FIP32P127/FIP33VDDP70P71P72IC (Vpp)POO/INTPO/T10PO1/INTP1PO2/INTP2P03/INTP3/C10P31/TO0P31/TO1P32/TO2P94/FIP6P93/FI

40、P5P92/FIP4P91/FIP3P90/FIP2P81/FIP1P80/FIP0VDDP27/SCK0P26/SO0/SB1P25/SIO/SBOP24/BUSYP23/STBP22/SCK1P21/SO1P20/SI1RESTP74P73AVssP17/AN17P16/AN16P15/AN15P14/AN141P94/FIP6NCOCHzNot used (Open)2P93/FIP56GOCHzLHP. DVFD grid 6G (EMPHASIS, PLAY, PAUSE,REPEAT)3P92/FIP45GOCHzLHP. DVFD grid 5G (1120, A B, PROG

41、, )4P91/FIP34GOCHzLHP. DVFD grid 4G (110)5P90/FIP23GOCHzLHP. DVFD grid 3G (Seconds Digit, S, SINGLE)6P81/FIP12GOCHzLHP. DVFD grid 2G (Minutes Digit, M, TOTAL)7P80/FIP01GOCHzLHP. DVFD grid 1G (Track No., A.SPACE)8VDDVDDPositive power (Connect to +5V)9P27/SCK0MCKOBHzHP. UPSM5841/PCM1735/BU2616 mode co

42、ntrol clock output10P26/S00/SB1MDTOBHzP. UPSM5841/PCM1735/BU2616 mode control data output11P25/SI0/SB0NCIBHzP. DGNot used (Connect to GND)12P24/BUSYNCIBHzP. DGNot used (Connect to GND)13P23/STBMLEOBHzP. UPSM5841/PCM1735 mode control latch output14P22/SCK1CQCKOBHzDSP, ASP Command clock & SUBQ readout

43、 clock output15P21/SO1COINOBHzDSP, ASP Command data output16P20/SI1SUBQIBHzDSP sub code Q data input17RESETRESETILReset signal input18P74NCIBHzP. DGNot used (Connect to GND)19P73XTALOBHzHLP. UPTC9246XTAL MODE change Lo:ON (Pitch 0),Hi:OFF(Variable pitch)20AVssAVssGND for A/D converter21P17/ANI7DSP X

44、RSTOBHzLLP. DGDSP reset signal output22P16/ANI6DF XRSTOBHzLLP. DGDigital filter reset signal output23P15/ANI5JOG BIBHzP. UPRotaly encoder JOG B input24P14/ANI4JOG AIBHzP. UPRotaly encoder JOG A input25P13/ANI3AD3IBHzAP. UPKey data input 3 (A/D)26P12/ANI2AD2IBHzAP. UPKey data input 2 (A/D)27P11/ANI1A

45、D1IBHzAP. UPKey data input 1 (A/D)28P10/ANI0AD0IBHzAP. UPKey data input 0 (A/D)29AVDDAVDDA/D converter analog power (Connect to +5V)30AVREFAVREFIA/D converter Ref. V input (Connect to +5V)PinNo.TerminalPortI/OTypRstIniActExtFunction PD78044FGF- 188- 3B9 Terminal FunctionPD78044FGF- 188- 3B9 Terminal

46、 Function ICs ICs 13PinNo.TerminalPortI/OTypRstIniActExtFunction31P04/XT1NCIAP. DGNot used (Connect to GND)32XT2NCNot used (Open)33VssGNDGND34X1X1IAMain system clock input35X2X2Main system clock input36P37MCSOBHzHLP. DGPCM1735 chip select output37P36/BUZMCEOBHzLLBU2616 chip enableoutput38P35/PCLRWCO

47、BHzLLDSP read / write control output39P34/TI2SL+OBHzLHASP sled drive signal output40P33/TI1SLOBHzLHASP sled drive signal output41P32/T02NCIBHzP. DGNot used (Connect to GND)42P31/T01CD/RWOBHzHLP. DGCD / RW Gain change output43P30/T00SEARCHOBHzLHP. DGServo control output at search44P03/INTP3/CI0REMOCO

48、NIBHzRemote control signal input45P02/INTP2WRQIBHzLHDSP SUBQ output standby input46P01/INTP1DRFIBHzLHASP DEFECT RF level detect input47P00/INTP0/TI0NCIAHzP. UPNot used (Connect to GND)48ICICConnect to GND49P72FSEQIBHzLHDSP sync signal detect input50P71A.MUTEOBHzHHP. UPAnalog mute output OFF: Lo, ON:

49、 Hi51P70DRV.MUTEOBHzHP. UPMOTOR DRIVER MUTE control output Hi:Output ON52VDDVDDPositive power (Connect to +5V)53P127/FIP33OPSWICHzLP. UPLoader open position detect switch input54P126/FIP32CLSWICHzLP. UPLoader close position detect switch input55P125/FIP31INSWICHzLP. UPPickup inner position detect sw

50、itch input56P124/FIP30OPENOCHzLHP. DGLoader open drive LA6559 signal output57P123/FIP29CLOSEOCHzLHP. DGLoader close drive LA6559 signal output58P122/FIP28MODELICHzModel distinction input Lo:455, Hi:55559P121/FIP27NCICHzP. DGNot used (Open)60P120/FIP26NCICHzP. DGNot used (Open)61P117/FIP25P1OCHzLHP.