JVC-CAMXS6MDR-cs-sm 维修电路原理图.pdf

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1、1-1CA-MXS6MDRSP-MXS6MDSERVICE MANUALCOMPACT COMPONENT MD SYSTEMNo.20876Sep. 2000COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.CA-MXS6MDRSP-MXS6MDCA-MXS6MDRSP-MXS6MDContentsSafety precautionsPreventing static electricityImportant for laser productsDisassembly methodAdjustment methodFlow of functional o

2、peration until TOC read (MD section)Maintenance of laser pickup (MD)Replacement of laser pickup (MD)Flow of functional operation until TOC read (CD section)Maintenance of laser pickup (CD)Replacement of laser pickup (CD)Description of major ICs1-21-41-51-61-311-371-381-381-391-401-401-41Area SuffixT

3、his service manual is printed on 100% recycled paper.BEENU.K.Continental EuropeNorthern EuropeCOMPACTDIGITAL AUDIODISC LOADING MECHANISMSTANDBY/ONLONGMODERECMODESP/LP2/LP4REC PAUSEHIGH SPEEDCD MDTITLE/EDITENTER/DEMOPHONESLINE 2MENUCOMPACT COMPONENT MD SYSTEM MX-S6MDRDISCDIMMERLINERM-SMXS6MDR REMOTE

4、CONTROLLEVELMETERCA-MXS6MDRSP-MXS6MDMAIN SYSTEMSPEAKER SYSTEMRadioFans.CN 收音机爱 好者资料库1-2CA-MXS6MDRSP-MXS6MD1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original desig

5、n unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only.2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product

6、should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.3. Many electrical and mechanical parts in the products have special safety-related chara

7、cteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in t

8、he Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts sho

9、wn in the Parts List of Service Manual may create shock, fire, or other hazards.4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electri

10、c shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling.5. Leakage currnet check (Electrical shock hazard testing)After re-assembling the product, always perform

11、an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not use a line isolation transformer during this check.Plug the AC

12、 line cord directly into the AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet , particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.

13、s.)Alternate check methodPlug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth ground.M

14、easure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to eachexposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each mea

15、surement. voltage measured Any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1. This equipment has been designed and manufactured to meet international safety standards.2. It is the legal responsibility of the repairer to ensure that these safety standards are maintaine

16、d.3. Repairs must be made in accordance with the relevant safety standards.4. It is essential that safety critical components are replaced by approved parts.5. If mains voltage selector is provided, check setting for local voltage.Good earth groundPlace this probe on each exposedmetal part.AC VOLTME

17、TER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE!Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.RadioFans.CN 收音机爱 好者资料库1-3CA-MXS6MDRSP-MXS6MD1. Service should be pe

18、rformed by qualified personnel only.2. This equipment has been designed and manufactured to meet international safety standards.3. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.4. Repairs must be made in accordance with the relevant safety standa

19、rds.5. It is essential that safety critical components are replaced by approved parts.6. If mains voltage selector is provided, check setting for local voltage.1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued prote

20、ction, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. 2. Any unauthorised design alterations or additions will void the manufacturers guarantee ; furthermore the manufactur

21、er cannot accept responsibility for personal injury or property damage resulting therefrom.3. Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must never be replaced by parts other than those listed in the manual. Please note however

22、that many electrical and mechanical parts in the product have special safety related characteristics. These characteristics are often not evident from visual inspection. Parts other than specified by the manufacturer may not have the same safety characteristics as the recommended replacement parts s

23、hown in the Parts List of the Service Manual and may create shock, fire, or other hazards.4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention

24、of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling.!Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay atten

25、tion to such burrs in the case of preforming repair of this system.(U.K only)1-4CA-MXS6MDRSP-MXS6MDElectrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to preve

26、nt this when performing repairs.1.1. Grounding to prevent damage by static electricityStatic electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD/MD players. Be careful to use proper grounding in the area where repairs are being performed. 1.1.1. Ground the

27、 workbench1. Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it.1.1.2. Ground yourself1. Use an anti-static wrist strap to release any static electricity built up in your body. 1.1.3. Handli

28、ng the optical pickup1. In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.)2. Do not use a tester to check the

29、 condition of the laser diode in the optical pickup. The testers internal power source can easily destroy the laser diode. 1.2. 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

30、 part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector. 3. Handle

31、the flexible cable carefully as it may break when subjected to strong force. 4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn itConductive material (conductive sheet) or iron plate(caption)Anti-static wrist strapCN321CN451PickupSoldering partMain boar

32、d Flexible boardSoldering partMD pickupCD pickupPreventing static electricity1-5CA-MXS6MDRSP-MXS6MDImportant for laser products1.CLASS 1 LASER PRODUCT2.DANGER : Invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam.3.CAUTION : There are no serviceable p

33、arts inside theLaser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions.4.CAUTION : The compact disc player uses invisible laserradiation and is equipped with safety switches whichprevent emission of radiation when the drawer is open and the safety interlocks

34、 have failed or are de feated. It is dangerous to defeat the safety switches.5.CAUTION : If safety switches malfunction, the laser is able to function.6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.VA

35、RNING : Osynlig laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen.VARO : Avattaessa ja suojalukitus ohitettaessa olet alttiina nkymttmlle lasersteilylle.l katso steeseen.ADVARSEL : Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse f

36、or strling.ADVARSEL : Usynlig laserstrling ved pning,nr sikkerhetsbryteren er avslott. unng utsettelse for strling.REPRODUCTION AND POSITION OF LABELWARNING LABELCLASS 1LASER PRODUCT!CAUTIONPlease use enough caution not to see the beam directly or touch it in case of an adjustment or operationcheck.

37、DANGER : Invisibie laser radiation when open and interlock or defeated.AVOID DIRECT EXPOSURE TO BEAM (e)VARNING : Osynlig laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. (s)VARO : Avattaessa ja suojalukitus ohitettaessa olet alttiina nkymttmlle lasersteilylle.l katso st

38、eeseen. (d)ADVARSEL :Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. (f)1-6CA-MXS6MDRSP-MXS6MDRemove the four screws A on the back of the body.Remove the two screws B on both sides of the body.Lift up the rear part of the top cover while pullin

39、g both sides, then remove the top cover.1.2.3.Disassembly methodRemoving the top cover (See Fig. 1 and 2)Prior to performing the following procedure, remove the top cover.Disconnect the card wire from connector CN661 on the input board.Remove the four screws C on the upper side of the body.Remove th

40、e screw D on the left side of the body.Release the wires from the clamp on the right side of the CD changer mechanism assembly. Lift up the rear part of the CD changer mechanism assembly and pull out it from the front assembly.1.2.3.4.Removing the CD changer mechanism assembly (See Fig.3 to 5)Fig.1F

41、ig.2Fig.3Fig.4Fig.5Top cover AAAAAACCB2ATop cover CD changer mechanism assemblyCD changer mechanism assemblyCD changer mechanism assemblyClampInput boardFront panel assemblyCN661CCD1-7CA-MXS6MDRSP-MXS6MDPrior to performing the following procedure, remove the top cover.Disconnect the wire from connec

42、tor CN603 on the input board and the card wire from CN801 on the microcomputer board.Remove the two screws E on the bottom of the body.Release the joint a on the bottom and the two joints b and c on the lower sides of the body using a screwdriver. Detach the front panel assembly toward the front.1.2

43、.3.Removing the font panel assembly (See Fig.6 to 8)Prior to performing the following procedure, remove the top cover and the front panel assembly.Remove the nine screws F attaching the display board to the front panel assembly.Disconnect connector CN791 on the display board from the control board o

44、n the front panel assembly.1.2.Removing the display board (See Fig.9)Prior to performing the following procedure, remove the top cover, the front panel assembly and the display board.Remove the five screws G and the four screws H attaching the control board and the key board.1.Removing the control b

45、oard / the key board (See Fig.10)When removing the control board and the key board respectively, unsolder each board.REFERANCE: Fig.8Front panel assemblyJoint aJoint bJoint cFront panel assemblyCN603CN801Microcomputer boardDisplay boardKey boardControl boardInput boardEEFGGGHHFFFFig.6Fig.7Fig.9Fig.1

46、0Front panel assemblyFront panel assemblySolderingFront panel assemblyCN7911-8CA-MXS6MDRSP-MXS6MDPrior to performing the following procedure, remove the top cover and the CD changer mechanism assembly.Disconnect the card wire from connectors CN511 on the main board.Remove the four screws I on both s

47、ides of the body.Pull out the MD changer mechanism assembly from behind upward while releasing the four joints d using a screwdriver.1.2.3.Removing the MD changer mechanism (See Fig.11 to 13 )Prior to performing the following procedure, remove the top cover.Disconnect the card wire from connector CN

48、801 on the microcomputer board.Remove the screw D attaching the microcomputer board.Disconnect the lower connector CN391, CN392 and CN393 from the main board by pulling them.1.2.3.Removing the microcomputer board (See Fig.14)MD changer mechanism assemblyCN511Microcomputer boardCN801CN393CN392CN391Jo

49、ints dIIDFig.11Fig.12Fig.13Fig.14MD changer mechanism assembly MD changer mechanism assemblyJoints d1-9CA-MXS6MDRSP-MXS6MDPrior to performing the following procedure, remove the top cover.Disconnect the wire from connector CN111 and CN112 on the tuner board.Remove the screw J on the side of the body

50、?Remove the two screws K on the back of the rear panel.1.2.3.Removing the tuner board (See Fig.15 and 16)Prior to performing the procedure, remove the top cover.Remove the two screws L attaching the rear cover to the body.Remove the two screws K, M, N, O, and the screw P and Q respectively.Release t