JVC-HXZ1-cs-sm 维修电路原理图.pdf

《JVC-HXZ1-cs-sm 维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《JVC-HXZ1-cs-sm 维修电路原理图.pdf（85页珍藏版）》请在收音机爱好者资料库上搜索。

1、1-1HX-Z1SERVICE MANUALCOMPACT COMPONENT SYSTEMNo.21088Jun. 2002COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.HX-Z1HX-Z1Area Suffix J - U.S.A.C - CanadaSafety precautionsPreventing static electricityImportant for laser productsImportance administering point on the safetyDisassembly methodContentsAdjust

2、ment method Flow of functional operation until TOC read (CD)Maintenance of laser pickupReplacement of laser pickup Description of major ICs1-21-31-41-51-61-241-291-301-301-3141COMPACTDIGITAL AUDIOVOLUMEPRESETSOUNDMODERadioFans.CN 收音机爱 好者资料库1-2HX-Z11. This design of this product contains special hard

3、ware and many circuits and components specially for safety purposes. For continued protection, 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. Services should be performed b

4、y qualified personnel only.2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for pe

5、rsonal injury or property damage resulting therefrom.3. Many electrical and mechanical parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replac

6、ement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the 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 Se

7、rvice Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts shown 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

8、, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention 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 retu

9、rned to normal, after re-assembling.5. Leakage currnet check (Electrical shock hazard testing)After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to b

10、e 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 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

11、 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.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 followi

12、ng 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.Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part

13、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 measurement. 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 manufactur

14、ed to meet international safety standards.2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.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.

15、5. If mains voltage selector is provided, check setting for local voltage.Good earth groundPlace this probe on each exposedmetal part.AC VOLTMETER(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, p

16、ay attention to such burrs in the case of preforming repair of this system.In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark n

17、earby are critical for safety. (This regulation does not correspond to J and C version.)RadioFans.CN 收音机爱 好者资料库1-3HX-Z1Preventing static electricity1. Grounding to prevent damage by static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc

18、. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.2. About the earth processing for the destruction prevention by static electricity In the equipment which uses optical pick-up (laser diode), optical pick-up is destr

19、oyed by the static electricity of the work environment.Be careful to use proper grounding in the area where repairs are being performed. 2-1 Ground the workbench Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit

20、(optical pickup) on it.2-2 Ground yourself Use an anti-static wrist strap to release any static electricity built up in your body. 3. Handling the optical pickup1. In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup a

21、re shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.)2. Do not use a tester to check the condition of the laser diode in the optical pickup. The testers internal power source can easily destroy the laser diode. 4. Handling the traverse unit (optica

22、l 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 using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove t

23、he 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 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.

24、 Do not turn itConductive material (conductive sheet) or iron plate(caption)Anti-static wrist strapAttention when traverse unit is decomposed1. Remove the disk stopper and T. bracket on the CD changer mechanism assembly. 2. Disconnect the harness from connector on the CD motor board.3. CD traverse u

25、nit is put up as shown in Fig.1. 4. Solder is put up before the card wire is removed from connector CN601 on the CD servo control board as shown in Fig. 2. (When the wire is removed without putting up solder, the CD pick-up assembly might destroy.) 5. Please remove solder after connecting the card w

26、ire with CN601 when you install picking up in the substrate.*Please refer to Disassembly method in the text for pick-up and how to detach the CD traverse mechanism. SolderingFig.1Fig.2CD changermechanism assemblyCD traverse unitFlexible cable1-4HX-Z1Important for laser products1.CLASS 1 LASER PRODUC

27、T2.DANGER : Invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam.3.CAUTION : There are no serviceable parts inside theLaser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions.4.CAUTION : The compact disc player

28、uses invisible laserradiation and is equipped with safety switches whichprevent emission of radiation when the drawer is open and the 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 able to functio

29、n.6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.VARNING : Osynlig laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen.VARO : Avattaessa ja suojalukitus ohitettaessa olet altt

30、iina nkymttmlle lasersteilylle.l katso steeseen.ADVARSEL : Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling.ADVARSEL : Usynlig laserstrling ved pning,nr sikkerhetsbryteren er avslott. unng utsettelse for strling.REPRODUCTION AND POSITION OF LABEL

31、SWARNING LABEL!CAUTIONPlease use enough caution not to see the beam directly or touch it in case of an adjustment or operationcheck.CLASS 1LASER PRODUCT1-5HX-Z1Importance administering point on the safety Caution: For continued protection against risk offire, replace only with same type 2.5A/125V fo

32、r F103, 5A/125V for F001 and 6A/125V for F101, F102.This symbolspecifies type of fast operating fuse. Precaution: Pour evitisques de fer reux, remplacezle fusible de surete de F103 comme le meme typeque 2.5A/125V, et 5A/125V pour F001 et 6A/125Vpour F101, F102.Ce sont des fusibles suretes qui functi

33、onnes rapide. 1-6HX-Z1Remove the six screws A on the back of the body.Remove the screw B on each side of the body.Remove the metal cover from the body by lifting the rear part of the cover.1.2.3.Removing the metal cover (See Fig.1 3)Prior to performing the following procedure, remove the metal cover

34、.Disconnect the card wire from connector CN651 on the CD servo control board on the right bottom of the CD changer mechanism assembly.Remove the four screws C attaching the CD changer mechanism assembly on top of the body.Remove the CD changer mechanism assembly while lifting the rear part.1.2.3.Rem

35、oving the CD changer mechanism assembly (See Fig.4, 5)Do not break the front panel tab fitted to the metal cover.CAUTION: Do not damage the CD fitting when removing the CD changer mechanism assembly.CAUTION: Disassembly methodMetal coverMetal coverMetal coverAABBCCCAFig.1Fig.2Fig.3Fig.5Fig.4Front pa

36、nel assemblyCD changer mechanism assemblyRear partCD changer mechanism assemblyCD servo control boardCN6511-7HX-Z1Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly.Disconnect the card wire from connector CN44 and CN870 on the main board on the

37、right side of the body. Remove the screw D attaching the wire from extending from the underside of the front panel assembly.Disconnect the wire from connector CN701 on thebridge board.Cut the tie band.Disconnect the wire from connector CN231 and CN232 on the primary board on the left side of the bod

38、y and remove the band fixing the wire.Remove the plastic rivet attaching the inner bar in the center of the front panel assembly.1.2.3.4.5.Remove the three screws E attaching the front panel assembly at the bottom of the body.Release the two joints a on the lower left and right sides of the front pa

39、nel assembly using a screwdriver, and remove the front panel assembly toward the front.6.7.Removing the front panel assembly (See Fig.6 9)Front panel need to be tilt a little bit as release from bottom chassis.REFERENCE: Keep the plastic rivet for reuse.REFERENCE: Front panel assemblyFront panel ass

40、emblyFront panel assemblyFront panel assemblyFig.6Fig.7Fig.8Fig.9Bridge boardCN701Bridge boardCN701Main boardCN870 DEJoint aJoint aPrimary boardCN231, CN232Primary boardCN231, CN232Plastic rivetBandInner barBottom chassis1-8HX-Z1Prior to performing the following procedure, remove the metal cover.Dis

41、connect the card wire from connector CN1 on the antenna board on the right side of the body.Remove the band attaching the antenna board.Remove the two screws F on the rear panel on the back of the body.1.2.3.Removing the antenna board (See Fig.10, 11)There is no need to remove the CD changer mechani

42、sm assembly.REFERENCE: Fig.10Fig.11Rear panelRear panelCN1Antenna boardBandF1-9HX-Z1Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly.Remove holding board by remove two plastic rivets and then slide out the holding board as shown in fig. 12.Dis

43、connect fan wire from connector CN206.Cut off the tie band that tied fan wire on inner bar.Remove eight screws F from rear panel.Detach joint b to release rear panel from inner bar.Release joints c which on right bottom and left bottom of rear panel. The joint can be release by pull outward the side

44、 of rear panel.1.2.3.4.5.6.Removing the rear panel (See Fig.12 17)Fan assembly will come off with rear panel.REFERENCE: Fig.12Fig.15Fig.13Fig.14Fig.16Fig.17Inner barHolding boardHolding boardCN206Plastic RivetsTie bandJoint bFan assemblyRear panelRear panelRear panelFFFFJoint cJoint cCN2061-10HX-Z1P

45、rior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly and the rear panel.Remove two screws G on the rear panel.Rotate fan assembly in clockwise direction to release fan assembly from rear panel (joint d).1.2.Removing the fan assembly (See Fig.18, 19

46、)Prior to performing the following procedure, remove the metal cover, the CD changer mechanism assembly, the antenna board and the rear panel.Disconnect the card wire from connector CN44 and CN870 on the main board.Remove the screw D attaching the board.Disconnect connector CN217 and CN311 on the ma

47、in board outward and release from the base chassis (joint e) upward.1.2.3.Removing the main board (See Fig.20)Rear panelGFig.18Fig.19Fig.20Joint dJoint dFan assemblyCN217CN311CN44Joint eDMain boardCN8701-11HX-Z1Prior to performing the following procedure, remove the metal cover, the CD changer mecha

48、nism assembly, the rear panel, the antenna board and main board.Remove the plastic rivet attaching the stay inner bar and remove the screw H on the bridge board.Move the inner bar forward and upward to release from the front section (joint f) and from the bridge board (two joints h) respectively.Rem

49、ove the two plastic rivets setting the holding board fixing the bridge board and the primary board. Move the bracket board in the direction of the arrow.Disconnect the wire from connector CN212, CN213 and CN214 on the primary board respectively and remove the band attaching the wires.Disconnect the

50、wire from connector CN701 on the bridge board.1.2.3.4.5.Removing the bridge board / regulator board / heat sink (See Fig.21 27)Fig.22Fig.23Fig.25Fig.24Inner barInner barPlastic rivetBridge boardBridge boardBridge boardRegulator boardHPlastic rivetPlastic rivetsFig.21Joint gJoint fHolding boardPrimar