Jvc-XVN-318-S-Service-Manual电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2004 Victor Company of Japan, LimitedNo.YD0342004/8DVD PLAYERYD03420048XV-N318STABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32 SPECIFIC SERVICE

2、INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-73 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-84 ADJUSTMENT . .

3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-145 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17213546

4、879010 +10CANCELRETURNVFPREPEATZOOMDIMMERAUDIOSOUNDEFFECTSUB TITLEANGLEOPEN/CLOSE DISPLAYNEXTPREVIOUSSELECTCLEARSLOW- SLOW+TOPMENU MENUONSCREENSETUPENTERSTANDBY/ONRESERVETITLE/GROUPTHUMBNAIL/LISTVOCALKARAOKEECHO SLIDE EFFECTPROGRESSIVESCANKEY+ KARAOKE DVDKARAOKESOUNDKEYArea SuffixUS - SingaporeUG -

5、Turkey,South Africa,EgyptUX - Saudi ArabiaUF - ChinaUB - Hong KongVIDEOXV-N318SUS2C, XV-N318SUG2C, XV-N318SUX2C, XV-N318SUF2C, XV-N318SUB2C1-2 (No.YD034)SPECIFICATIONSpecifications and appearance are subject to change without prior notice. Manufactured under license from Dolby Laboratories. “Dolby“

6、and the double-D symbol are trademarkes of Dolby Laboratories. “DTS“ and “DTS 2.0+Digital Out“ are trademarks of Digital Theater Systems, Inc. USE OF THIS PRODUCT IN ANY MANNER THAT COMPLIES WITH THE MPEG-4 VISUAL STANDARD IS PROHIBITED, EXCEPT FORUSE BY A CONSUMER ENGAGING IN PERSONAL AND NON-COMME

7、RCIAL ACTIVITIES. This product incorporates copyright protection technology that is protected by U.S. patents and other intellectual property rights. Use of thiscopyright protection technology must be authorized by Macrovision, and is intended for home and other limited viewing uses only unlessother

8、wise authorized by Macrovision. Reverse engineering or disassembly is prohibited. “CONSUMERS SHOULD NOTE THAT NOT ALL HIGH DEFINITION TELEVISION SETS ARE FULLY COMPATIBLE WITH THIS PROD-UCT AND MAY CAUSE ARTIFACTS TO BE DISPLAYED IN THE PICTURE. IN CASE OF 525 OR 625 PROGRESSIVE SCAN PICTUREPROBLEMS

9、, IT IS RECOMMENDED THAT THE USER SWITCH THE CONNECTION TO THE “STANDARD DEFINITION” OUTPUT. IFTHERE ARE QUESTIONS REGARDING OUR TV SET COMPATIBILITY WITH THIS MODEL 525p AND 625p DVD PLAYER, PLEASECONTACT OUR CUSTOMER SERVICE CENTER.”Digital output signal chartXV-N318S for US,UG,UX,UF,UBGeneralRead

10、able discs DVD VIDEO, DVD-R (Video format), DVD-RW (Video format), SVCD, Video CD, Audio CD (CD-DA), CD-R/RW (CD-DA, SVCD, Video CD, MP3 format, JPEG, MPEG-4)Video format PAL, 625i (Interlaced scan)NTSC, 525i (Interlaced scan)/525p (Progressive scan) selectableOtherPower requirements AC 110 V - 240

11、V , 50 Hz/60 HzPower consumption 11.0 W (POWER ON), 2.0 W (STANDBY mode)Mass 1.6 k gDimensions (W H D) 435 mm 44 mm 201 mmVideo outputsCOMPONENT (pin jacks) Y Output: 1.0 Vp-p (75 )Pb/Pr Output: 0.7 Vp-p(75 )VIDEO OUT (pin jack) 1.0 Vp-p (75 )S-VIDEO OUT (S jack) Y Output: 1.0 Vp-p (75 )C Output: 28

12、6 mVp-p (75 )Horizontal resolution 500 lines or moreAudio inputMIC 1/2 4mVrms (8.2 k)Audio outputsANALOG OUT (pin jack) 2.0 Vrms (10 k)DIGITAL OUT (COAXIAL) 0.5 Vp-p (75 termination)Audio characteristicsFrequency response CD (sampling frequency 44.1 kHz):2 Hz to 20 kHzDVD (sampling frequency 48 kHz)

13、:2 Hz to 22 kHz(4 Hz to 20 kHz for DTS and Dolby Digital bitstream signals)DVD (sampling frequency 96 kHz)2 Hz to 44 kHzDynamic range 16 bit: More than 98 dB20 bit/24 bit: More than 100 dBWow and flutter Unmeasurable (less than +- 0.002%)Total harmonic distortion less than 0.009%Disc typeOutputPCM O

14、NLY DOLBY DIGITAL/PCM STREAM/PCMDVD with 48/44.1 kHz, 16/20/24bit linear PCM48/44.1 kHz, 16 bit, stereo linear PCMDVD with DTS 48 kHz, 16 bit, stereo linear PCM DTS bitstreamDVD with Dolby Digital 48 kHz, 16 bit, stereo linear PCM Dolby Digital bitstreamDVD with MPEG Multichannel 48 kHz, 16 bit, ste

15、reo linear PCM MPEG bitstreamSVCD/Video CD/Audio CD 44.1 kHz, 16 bit, stereo linear PCMAudio CD with DTS 48 kHz, 16 bit, stereo linear PCM DTS bitstreamCD-R/RW with MP3 Linear PCMCD-R/RW with MPEG-4 No output(No.YD034)1-3SECTION 1PRECAUTION1.1 Safety Precautions(1) This design of this product contai

16、ns special hardware andmany circuits and components specially for safety purpos-es. For continued protection, no changes should be madeto the original design unless authorized in writing by themanufacturer. Replacement parts must be identical tothose used in the original circuits. Services should be

17、 per-formed by qualified personnel only.(2) Alterations of the design or circuitry of the product shouldnot be made. Any design alterations of the product shouldnot be made. Any design alterations or additions will voidthe manufacturers warranty and will further relieve themanufacture of responsibil

18、ity for personal injury or propertydamage resulting therefrom.(3) Many electrical and mechanical parts in the products havespecial safety-related characteristics. These characteris-tics are often not evident from visual inspection nor can theprotection afforded by them necessarily be obtained by us-

19、ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have these specialsafety characteristics are identified in the Parts List of Ser-vice Manual. Electrical components having such featuresare identified by shading on the schematics and by ( ) onthe Parts List

20、in the Service Manual. The use of a substitutereplacement which does not have the same safety charac-teristics as the recommended replacement parts shown inthe Parts List of Service Manual may create shock, fire, orother hazards.(4) The leads in the products are routed and dressed with ties,clamps,

21、tubings, barriers and the like to be separated fromlive parts, high temperature parts, moving parts and/orsharp edges for the prevention of electric shock and firehazard. When service is required, the original lead routingand dress should be observed, and it should be confirmedthat they have been re

22、turned to normal, after reassem-bling.(5) Leakage shock hazard testing)After reassembling the product, always perform an isola-tion check on the exposed metal parts of the product (an-tenna terminals, knobs, metal cabinet, screw heads,headphone jack, control shafts, etc.) to be sure the productis sa

23、fe to operate without danger of electrical shock.Do notuse a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a“Leakage Current Tester“, measure the leakage currentfrom each exposed metal parts of the cabinet, particular-ly any exposed metal part

24、 having a return path to thechassis, to a known good earth ground. Any leakage cur-rent must not exceed 0.5mA AC (r.m.s.). Alternate check methodPlug the AC line cord directly into the AC outlet. Use anAC voltmeter having, 1,000 ohms per volt or more sensi-tivity in the following manner. Connect a 1

25、,500 ohm 10Wresistor paralleled by a 0.15 F AC-type capacitor be-tween an exposed metal part and a known good earthground.Measure the AC voltage across the resistor with the ACvoltmeter. Move the resistor connection to each exposed metalpart, particularly any exposed metal part having a returnpath t

26、o the chassis, and measure the AC voltage acrossthe resistor. Now, reverse the plug in the AC outlet andrepeat each measurement. Voltage measured any mustnot exceed 0.75 V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.). 1.2 Warning(1) This equipment has been designed and manufactured tomeet inte

27、rnational safety standards.(2) It is the legal responsibility of the repairer to ensure thatthese safety standards are maintained.(3) Repairs must be made in accordance with the relevantsafety standards.(4) It is essential that safety critical components are replacedby approved parts.(5) If mains vo

28、ltage selector is provided, check setting for localvoltage.1.3 CautionBurrs formed during molding may be left over on some partsof the chassis. Therefore, pay attention to such burrs in the case of pre-forming repair of this system.1.4 Critical parts for safetyIn regard with component parts appearin

29、g on the silk-screenprinted side (parts side) of the PWB diagrams, the parts that areprinted over with black such as the resistor ( ), diode ( )and ICP ( ) or identified by the “ “ mark nearby are critical forsafety. When replacing them, be sure to use the parts of thesame type and rating as specifi

30、ed by the manufacturer. (Exceptthe JC version)1-4 (No.YD034)1.5 Preventing static electricityElectrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laserdiode in the traverse unit (optical pickup). Take care to prevent this

31、 when performing repairs.1.5.1 Grounding to prevent damage by static electricityStatic electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbenchG

32、round the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing thetraverse unit (optical pickup) on it.(2) Ground yourselfUse an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup In

33、 order to maintain quality during transport and before installation, both sides of the laser diode on the replacement opticalpickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.) Do not use a tester to check the condition of the laser diode

34、 in the optical pickup. The testers internal power source can easilydestroy the laser diode. 1.6 Handling the traverse unit (optical pickup)(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off the shorted part of the flexible cable u

35、sing nippers, etc. after replacing the optical pickup. For specific details, refer to thereplacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too longa time when attaching it to the connector. (3) Handle the flexible cable carefully a

36、s it may break when subjected to strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.1.7 Precautions of the safe use of battery Store the battery in a place where children cannot reach.If a child accidentally swallows the battery, cons

37、ult a doctorimmediately. Do not recharge, short, disassemble or heat the battery or dispose of it in a fire.Doing any of these things may cause the battery to give off heat, crack, or start a fire. Do not leave the battery with other metallic materials.Doing this may cause the battery to give off he

38、at, crack, or start a fire. When throwing away or saving the battery, wrap it in tape and insulate; otherwise, the battery may start to give off heat, crack, orstart a fire. Do not poke the battery with tweezers or similar tools.Doing this may cause the battery to give off heat, crack, or start a fi

39、re. Dispose of batteries in the proper manner, according to federal, state, and local regulations.(No.YD034)1-51.8 Important for laser products (1) CLASS 1 LASER PRODUCT(2) DANGER : Invisible laser radiation when open and interlock failed or defeated. Avoid direct exposure to beam.(3) CAUTION : Ther

40、e are no serviceable parts inside the Laser Unit. Do not disassemble the Laser Unit. Replace thecomplete Laser Unit if it malfunctions.(4) CAUTION : The compact disc player uses invisible laserradiation and is equipped with safety switches which prevent emission of radiation when the drawer is open

41、andthe safety interlocks have failed or are de feated. It is dangerous to defeat the safety switches.(5) CAUTION : If safety switches malfunction, the laser is ableto function.(6) CAUTION : Use of controls, adjustments or performance ofprocedures other than those specified herein may result inhazard

42、ous radiation exposure.CAUTIONPlease use enough caution not to see the beam directlyor touch it in case of anadjustment or operation check.VARNINGOsynlig laserstrlning r denna del r ppnad och sprren rurkopplad. Betrakta ej strlen.VAROAvattaessa ja suojalukitus ohitettaessa olet alttiina nkymt-tmlle

43、lasersteilylle. l katso steeseen.ADVARSELUsynlig laserstrling ved bning, nr sikkerhedsafbrydere erude af funktion. Undg udsasttelse for strling.ADVARSELUsynlig laserstrling ved pning, nr sikkerhetsbryteren er avs-lott. unng utsettelse for strling.REPRODUCTION AND POSITION OF LABEL and PRINTWARNING L

44、ABEL and PRINTThe inside of a rear panelRIGHTLEFTCOAXIALPCM/STREAMDIGITAL OUTAUDIO OUTVIDEOS-VIDEO PRPBYVIDEOOUTCOMPONENTVIDEO SIGNALSELECTORAVCOMPU LINKPAL 625iNTSC 525iNTSC525i/p REMOTE1-6 (No.YD034)1.9 Precautions for Service1.9.1 Handling of Traverse Unit and Laser Pickup(1) Do not touch any per

45、ipheral element of the pickup or the actuator.(2) The traverse unit and the pickup are precision devices and therefore must not be subjected to strong shock.(3) Do not use a tester to examine the laser diode. (The diode can easily be destroyed by the internal power supply of the tester.)(4) To repla

46、ce the traverse unit, pull out the metal short pin for protection from charging.(5) When replacing the pickup, after mounting a new pickup, remove the solder on the short land which is provided at the center ofthe flexible wire to open the circuit.(6) Half-fixed resistors for laser power adjustment

47、are adjusted in pairs at shipment to match the characteristics of the optical block.Do not change the setting of these half-fixed resistors for laser power adjustment. 1.9.2 Destruction of Traverse Unit and Laser Pickup by Static ElectricityLaser diodes are easily destroyed by static electricity cha

48、rged on clothingor the human body. Before repairing peripheral elements ofthe traverse unit or pickup, be sure to take the following electrostatic protection:(1) Wear an antistatic wrist wrap.(2) With a conductive sheet or a steel plate on the workbench on which the traverse unit or the pick up is t

49、o be repaired, ground thesheet or the plate.(3) It solders to two short circuit sections on the substrate of a pick-up.(4) After removing the flexible wire from the connector (CN101), short-circuit the flexible wire by the metal clip.(5) Short-circuit the laser diode by soldering the land which is provided at the center of the flexible wire for the pickup. After completing the repair, remove the solder to open the circuit.Short circuitPic