JVC-FSM3-cs-sm 维修电路原理图.pdf

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1、No.21067Feb. 2002COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.SERVICE MANUALContentsSafety precautionsPreventing static electricityImportant for laser productsImportance administering point on the safetyDisassembly methodAdjustment method1-21-31-41-51-61-151-181-191-191-201-211-29Flow of functional o

2、peration until TOC readMaintenance of laser pickupReplacement of laser pickupTrouble shootingDescription of major ICsWiring connectionsFS-M3 Area suffixJ - U.S.A.C - CanadaFS-M3DISPLAYMODEPHONESPROGRAMRECSTOP/CLEARPLAY/PAUSEPRE EQ/HBSVOLUMEREPEATSEARCH/TUNINGRANDOM CDTUNERTAPEBANDC O M P A C T C O M

3、 P O N E N T S Y S T E M F S - M 3FULL LOGIC DECKCD SYNCHRO RECORDINGTIMERON/OFFSETREMAINEJECTINTROPRESETOPEN/CLOSESTANDBY/ONCD/RANDOMTAPEDISPLAYMODEPROGRAMRECSLEEPPRE UPTIMERBEAT CUTSTANDBY/ON+VOLUMETUNER/BANDREPEAT/PRE DOWNINTROREMAINRM-SFSM3J REMOTE CONTROLMUTINGPRE EQ/HBSCOMPACT COMPONENT SYSTEM

4、RadioFans.CN 收音机爱 好者资料库FS-M31-21. 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 design unless authorized in writing by the manufacturer. Replacement parts must

5、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 should not be made. Any design alterations or additions will void the manuf

6、acturers 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 characteristics. These characteristics are often not evident from visual inspect

7、ion 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 the Parts List of Service Manual. Electrical components having such features

8、 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 shown in the Parts List of Service Manual may create shock, fire, or other haz

9、ards.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 electric shock and fire hazard. When service is required, the original lead routin

10、g 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 an isolation check on the exposed metal parts of the product (antenna termi

11、nals, 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 line cord directly into the AC outlet. Using a Leakage Current Tester, mea

12、sure 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.s.).Alternate check methodPlug the AC line cord directly into the AC outlet.

13、 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.Measure the AC voltage across the resistor with the AC voltmeter. Move the r

14、esistor connection to each exposed 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 measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This co

15、rresponds 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 maintained.3. Repairs must be made in accordance with the relevant safety standards

16、.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 VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE!Burr

17、s 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.In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over wit

18、h black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark nearby 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FS-M31-3Short landCD pickup unitConnectorConductive material (conductive sheet) or iron plate(caption)Anti

19、-static wrist strap5. Attention when traverse unit is decomposed*Please refer to Disassembly method in the text for the CD pickup unit. Apply solder to the short land before the card wire is disconnected from the connector on the CD pickup unit. (If the card wire is disconnected without applying sol

20、der, the CDpickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land after connecting the card wire.Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in t

21、he traverse unit (optical pickup). Take care to prevent this when performing repairs.Preventing static electricity1. Grounding to prevent damage by static electricityStatic electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.Be careful to use prope

22、r grounding in the area where repairs are being performed. 2. About the earth processing for the destruction prevention by static electricityGround 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 i

23、t.2-1 Ground the workbench2-2 Ground yourselfUse an anti-static wrist strap to release any static electricity built up in your body. 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,

24、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 in the optical pickup. The testers internal power source can easily destroy the laser diode. 3. Handling the optical pickup1.2. Do not subject the traverse unit (op

25、tical pickup) to strong shocks, as it is a sensitive, complex unit.Remove solder of the short land on the card wire 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

26、take too long a time when attaching it to the connector.Handle the card wire carefully as it may break when subjected to strong force.It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.4. Handling the traverse unit (optical pickup)1.2.3.4.FS-M31-4Import

27、ant 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 parts inside theLaser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfu

28、nctions.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 have failed or are de feated. It is dangerous to defeat the safety switches.5.CAUTION : If safety switch

29、es 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.VARNING : Osynlig laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen.VARO : Avatt

30、aessa ja suojalukitus ohitettaessa olet alttiina 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 fo

31、r strling.REPRODUCTION AND POSITION OF LABELSWARNING LABELCLASS 1LASER PRODUCT!CAUTIONPlease use enough caution not to see the beam directly or touch it in case of an adjustment or operationcheck.CAUTION: INVISIBLE LASER RADIATION WHEN OPEN ANDINTERLOCK DEFEATED. AVOID EXPOSURE TO BEAM.ADVARSEL: USY

32、NLIG LASERSTRLING VED BNING NRSIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGUDSAETTELSE FOR STRLING.VARO: AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLETALTTIINA NKYMTTOMLLE LASERSTEILYLLE L KATSOSTEESEEN.VARNING: OSYNLIG LASERSTRALNING NAR DENNA DELAR OPPNAD OCH SPARREN AR URKOPPLAD. BETRAKTA EJSTRALEN.

33、 FS-M31-5Caution: For continued protection against risk offire, replace only with same type 1.6A/250V forF901,3.15A/250V for F902,1.6A/250V for F903.This symbolspecifies type of fast operating fuse.Precaution: Pour eviter risques de feux, remplacezle fusible de surete de F901 comme le meme typeque 1

34、.6A/250V,F902 comme le meme type que 3.15A/250,et 1.6A/250V pour F903. Ce sont des fusibles suretes qui functionnes rapide.Importance administering point on the safety F903F902F901FS-M31-6Fuse(F903)1.6A 250VFuse(F901)1.6A 250VHeat sinkSoldered part aAPower boardFuse(F902)3.15A 250VFig.1Fig.2Main boa

35、rdPower amplifier IC(IC401)Replacing the fuses (See Fig. 1.)Remove the left side panel according to its disassembly method (see Figs. 5 and 6).Fuses are located inside the left side panel.Disassembly methodReplacement of the fuses and power amplifier ICCaution Be sure to replace the required fuses w

36、ith designated ones.Replacing the power amplifier IC on the main board (See Fig. 2.)1.2.Remove the main board according to its disassembly method (see Figs. 17 and 18).Remove the two screws A that attach the power amplifier IC onto the heat sink.In order to replace the power amplifier IC, remove the

37、 solder from soldered part a on the back side of the main board.FS-M31-7Fig.3Fig.4BBCCRight sidepanelFig.5BCCRight sidepanel1Claw bFig.6Left sidepanelLeft sidepanel3Claw c24BRemoving the right side panel (See Figs. 3 and 4.)1.2.From the right side of the main body, remove the three screws B and thre

38、e screws C retaining the right side panel.Slide the right side panel toward the rear (in the direction of arrow 1) until the claw b at the back of the panel is hooked by the chassis and then lift the panel upward (in the direction of arrow 2) to remove it.Removing the left side panel (See Figs. 5 an

39、d 6.)1.2.From the left side of the main body, remove the three screws B and three screws C retaining the left side panel.Slide the left side panel toward the rear (in the direction of arrow 3) until the claw c at the back of the panel is hooked by the chassis, and then lift the panel upward (in the

40、direction of arrow 4) to remove it.FS-M31-8DDHFig.8Fig.11Fig.10Fig.9Fig.7Lift the rearpart to remove.Top cover(To be loosened)Rear panel121H.P. jackboardConnector on thecassette switchboardPower boardTie bandCN902CN402CN608CD mechanismassemblyFront panel assemblyHook dHook dFFFGGECD mechanismassembl

41、yCN607ChassisCN201Ferrite coreTie bandRemoving the top cover (See Figs. 7 and 8.)1.2.From the back side of the main body, loosen the two screws D retaining the top cover.Lift the rear part of the top cover to remove it.Removing the front panel assembly (See Figs. 9 to 11.)1.2.3.4.5.6.7.8.9.Remove th

42、e tie band bundling the wires.Disconnect the wire from the connector CN902 on the power board.Disconnect the wire from the connector on the cassette switch board.Remove the screw E retaining the bracket on the H.P. jack board.Disconnect the wires from the two connectors CN201 and CN402 on the main b

43、oard.Disconnect the wires from the two connectors CN607 and CN608 on the CD & MCU board.Remove the four screws F and the two screws G retaining the bracket of the CD mechanism assembly from the left and right.Remove the screw H retaining the front panel assembly from the bottom side of the main body

44、.While opening the hooks d to the left and right of the lower part of the front panel assembly (in the direction of arrows 1), slide the front panel assembly toward the front (in the direction of arrow 2).Remove the left and right side panels.Remove the left and right side panels.Remove the top cove

45、r.Note After assembly, apply a locking agent to the screws F and G.FS-M31-9KFig.13Fig.12CD & MCU boardCD mechanism assemblyCD & MCU boardCD & MCU boardJCN701CN603Tie bandKFig.14Main boardCN601CN602StudCD mechanism assemblyRemoving the CD mechanism assembly (See Figs. 12 to 14.)1.2.3.4.5.Remove the l

46、eft and right side panels.Remove the top cover.Remove the front panel assembly.Disconnect the wires from the four connectors CN601, CN602, CN603 and CN701 on the CD & MCU board.From the left side of the main body, remove the tie band bundling the wires.Loosen the screw J retaining the main board.Fro

47、m the left and right sides of the main body, remove the four screws K retaining the bracket.Slide the CD mechanism assembly toward the front and remove it from the studs of the main board.Note After assembly, apply a adhesive agent to the stud.FS-M31-10Fig.17Fig.16Fig.15Rear panelSpeaker terminalMLS

48、tudStudStudChassisCN901Power boardPower transformerMain boardFig.18NChassisHeat sinkSoldered part eMain boardRadio pliers, etc.Power boardChassisPower transformerFM antenna wireRemoving the power board (See Figs. 15 and 16.)1.2.3.Remove the left and right side panels.Disconnect the wire from the con

49、nector CN901 on the power board.Remove the two screws L retaining the chassis .Remove the power board by pinching the two studs retaining the board using radio pliers, etc.Removing the main board (See Figs. 17 and 18.)1.2.3.4.Remove the left and right side panels.Remove the top cover.Remove the fron

50、t panel assembly.Remove the CD mechanism assembly.Remove the two screws M retaining the speaker terminal of the main board.From the top side of the main body, remove the screw N retaining the heat sink of the main board.Remove the solder from the soldered part e that attaches the FM antenna wire to