JVC-FSP550-cs-sm 维修电路原理图.pdf

SERVICE MANUALCOPYRIGHT 2004 Victor Company of Japan, LimitedNo.MB2292004/5COMPACT COMPONENT SYSTEMMB22920045FS-P550TABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-255TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31Area suffixC - CanadaRadioFans.CN 收音机爱 好者资料库1-2 (No.MB229)SPECIFICATIONDesigns and Specifications are subject to change without notice.Amplifier sectionOutput Power:80 WHIGH:40 W (20 W + 20 W) at 4 (10% THD)LOW:40 W (20 W + 20 W) at 4 (10% THD)Audio InputAUX:400 mV/50 kDigital outputDVD OPTICAL DIGITAL OUT:-21 dBm to -15 dBm (660 nm 30 nm)Video outputColor system:NTSC (interlaced/progressive)VIDEO (composite)1 V(p-p)/75 S-VIDEOY (luminance):1 V(p-p)/75 C (chrominance, burst):0.286 V(p-p)/75 COMPONENT(Y):1 V(p-p)/75 (PB/PR):0.7 V(p-p)/75 Speakers/Impedance4 - 16Tuner sectionFM tuning range87.5 MHz - 108.0 MHzAM (MW) tuning range530 kHz - 1 710 kHzDisc player sectionPlayable discDVD Video/DVD Audio CD/VCD/SVCDCD-R/CD-RW (CD/SVCD/VCD/MP3/WMA/JPEG format)DVD-R/DVD-RW (Video format)Dynamic range90 dBHorizontal resolution500 linesWow and flutterImmeasurableSpeakersSpeaker unitsHIGH4 cm (1 5/8 in.) cone 1LOW10 cm (3 15/16 in.) cone 1ImpedanceHIGH4LOW4Dimensions (approx.)145 mm 230 mm 202 mm (5 3/4 in. 9 1/16 in. 8in.) (W/H/D)Mass (approx.)2.2 kg (4.9 lbs) eachGeneralPower requirementAC 120 V , 60 HzPower consumption90 W (at operation) 1.8 W (on standby)Dimensions (approx.)170 mm 230 mm 311 mm (6 3/4 in. 9 1/16 in. 12 1/4in.) (W/H/D)Mass (approx.)5.0 kg (11.1 lbs)RadioFans.CN 收音机爱 好者资料库(No.MB229)1-3SECTION 1PRECAUTION1.1Safety Precautions(1) This design of this product contains 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 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 responsibility 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-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 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, 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 returned to normal, after reassem-bling.(5) Leakage shock hazard testingAfter 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 safe 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 aLeakage Current Tester, measure the leakage currentfrom each exposed metal parts of the cabinet, particular-ly any exposed metal part 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 per volt or more sensitivityin the following manner. Connect a 1,500 10W resistorparalleled by a 0.15F AC-type capacitor between an ex-posed metal part and a known good earth ground.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 to 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.). 1.2Warning(1) This equipment has been designed and manufactured tomeet international 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 voltage selector is provided, check setting for localvoltage.1.3CautionBurrs 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.1.4Critical parts for safetyIn regard with component parts appearing 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 criticalfor safety. When replacing them, be sure to use the parts of thesame type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version)Good earth groundPlace this probe on each exposedmetal part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE1-4 (No.MB229)1.5Preventing 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 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 laser products. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbenchGround 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 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 in the optical pickup. The testers internal power source can easilydestroy the laser diode. 1.6Handling 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 using 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 long atime when attaching it to the connector. (3) Handle the flexible cable carefully as 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.1.7Attention when traverse unit is decomposed*Please refer to Disassembly method in the text for the pickup unit. Apply solder to the short land sections before the flexible wire is disconnected from the connecto on the servo board. (If the flexiblewire is disconnected without applying solder, the pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land sections after connecting the flexible wire.1MConductive material(conductive sheet) or iron palate(caption)Anti-static wrist strapTraverse mechanism assemblyPickupShort land sectionCard wireConnector(No.MB229)1-51.8Importance administering point on the safetyPower supply boardCaution: For continued protection against risk of fire,replace only with same type 2.5 A/125 V for F1001and F1003, 1.25 A/125 V for F1004, 6.3 A/125 V forF1005 and F1006. This symbol specifies the type of fast operating fuse.Precaution: Pour la protection continue contre lesrisques dincendie, remplacer uniquement par lememe type: fusible 2,5 A/125 V pour les F1001 etF1003, 1,25 A/125 V pour le F1004, et 6,3 A/125 Vpour les F1005 et F1006. Ce symbole specifie le type de fusible a action rapide.2.5A-125VF10011.25A-125VF10042.5A-125VF10036.3A-125VF10056.3A-125VF10061-6 (No.MB229)SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.(No.MB229)1-7SECTION 3DISASSEMBLY3.1Main body section3.1.1 Removing the side panels L/R(See Figs.1 to 4)(1) From the back side of the main body, remove the fourscrews A attaching the side panels L/R to the rear panel.(See Fig.1.)(2) From the bottom side of the main body, remove the twoscrews B attaching the side panels L/R to the bottom chas-sis. (See Fig.2.)(3) From the both sides of the main body, release the engage-ment sections (a, b) of the side panels L/R from the toppanel in the direction of the arrow. (See Figs.3 and 4.)(4) Remove the side panels L/R toward this side.Fig.1Fig.2Fig.3Fig.4Side panel RSide panel LRear panelAASide panel LBBBottom chassisSide panel RTop panelaaaSide panel RTop panelbbbSide panel L1-8 (No.MB229)3.1.2 Removing the front panel assembly(See Figs.5 to 8) Prior to performing the following procedures, remove the sidepanels L/R.(1) From the right side of the main body, push the slide camand pull the tray assembly out of the main body in the di-rection of the arrow 1. (See Fig.5.)(2) Remove the tray fitting from the tray assembly in the direc-tion of the arrow 2. (See Fig.5.)(3) From the both sides of the main body, remove the twoscrews C attaching the front panel assembly. (See Figs.6and 7.)(4) Release the two claws c and claws d to draw out the frontpanel assembly in the direction of the arrow. (See Figs.6and 7.)(5) From the right side of the main body, disconnect the cardwire from the connector CN730 on the main board. (SeeFig.8.)(6) Disconnect the wire from the connector CN270 on the mainboard. (See Fig.8.)(7) Remove the front panel assembly in the direction of the ar-row. (See Fig.8.)Fig.5Fig.6Fig.7Fig.812Front panel assemblySlide camTray assemblyTray fittingFront panel assemblyCcdFront panel assemblyCcdFront panel assemblyCN270Main boardCN730Card wireWire(No.MB229)1-93.1.3 Removing the top panel(See Fig.9) Prior to performing the following procedures, remove the sidepanels L/R and front panel assembly.(1) From the back side of the main body, remove the screw Dattaching the top panel to the rear panel.(2) Take out the top panel from the main body.Fig.9Top panelDRear panel1-10 (No.MB229)3.1.4 Removing the tuner(See Figs.10 and 11) Prior to performing the following procedures, remove the sidepanel L.(1) From the back side of the main body, remove the twoscrews E attaching the tuner to the rear panel. (SeeFig.10.)(2) Disconnect the card wire from the connector CN1 on thetuner. (See Fig.11.)Fig.10Fig.11ERear panelCard wireCN1Tuner(No.MB229)1-113.1.5 Removing the rear panel(See Fig.12) Prior to performing the following procedures, remove the sidepanels L/R.(1) From the back side of the main body, remove the twelvescrews F attaching the rear panel.(2) Release the engagement sections e and remove the rearpanel.Fig.123.1.6 Removing the video board(See Fig.13) Prior to performing the following procedures, remove the sidepanels L/R and rear panel.(1) From the forward side of the video board, disconnect thecard wires from connector CN300.(2) Disconnect the wire to the connector CN301 on the videoboard.Fig.13Rear panelFeeFVideo boardCN300CN3011-12 (No.MB229)3.1.7 Removing the fan(See Fig.14) Prior to performing the following procedures, remove the sidepanels L/R, front panel assembly, top panel and rear panel.(1) From the front side of the main body, remove the twoscrews G attaching the fan bracket to the heat sink B.(2) Remove the two screws H attaching the fan to the fanbracket.Reference: Remove the tuner and video board as required. (SeeFigs.10, 11, and 13) When attaching the screws H, attach the wire holders withthem.Fig.143.1.8 Removing the main board(See Fig.15) Prior to performing the following procedures, remove the sidepanels L/R, front panel assembly, top panel, tuner, rear paneland video board.(1) From the right side of the main body, remove the twoscrews J attaching the main board.(2) Remove the main board toward this side and disconnectthe connector CN200 on the main board.(3) From the forward side of the main board, disconnect thecard wires from the connectors (CN210, CN220, CN720).Fig.15Heat sink BGFan bracketHFan bracketFanHWire holdersJJCN200Card wireCN220CN720Main boardCN210(No.MB229)1-133.1.9 Removing the power supply board(See Fig.16) Prior to performing the following procedures, remove the sidepanel L and rear panel.(1) From the left side of the main body, remove the screw K at-taching the power supply board.(2) Remove the power supply board toward this side and dis-connect the connector CN104 on the power supply board.(3) From the forward side of the power supply board, discon-nect the wires from the connectors (CN101, CN102,CN103).Reference:When attaching the power supply board, insert the section f ofthe power supply board in the hole of the bottom chassis be-fore attaching the screw K.Fig.163.1.10 Removing the power amplifier board(See Fig.17) Prior to performing the following procedures, remove the sidepanels L/R, front panel assembly, top panel, tuner, rear panel,video board and main board.(1)