JVC-HXZ10-cs-sm 维修电路原理图.pdf

SERVICE MANUALCOPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITEDNo.MB0142003/9COMPACT COMPONENT SYSTEMMB01420037HX-Z10TABLE OF CONTENTS1PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-375TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41B - U.K.E - Continental EuropeEN - Northern EuropeArea SuffixRadioFans.CN 收音机爱 好者资料库1-2 (No.MB014)SPECIFICATIONCA-HXZ10SP-HXZ10Design and specifications are subject to change without notice.Amplifier section Output Power (IEC 268-3)Subwoofer125 W per channel, min. RMS, driven into 6 at 63 Hz with no more than10% total harmonic distortion.Main Speaker35 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 10%total harmonic distortion.Audio input sensitivity/impedance (Measured at 1 kHz, with tape recording signal 300 mV)AUX300 mV/47 kSpeakers/impedance Subwoofer6 - 16 Main Speaker 6 - 16 TunerFM tuning range87.50 MHz - 108.00 MHzAM tuning range522 kHz - 1 629 kHzCD playerDisc capacity5 discsDynamic range87 dBSignal-to-noise ratio90 dBWow and flutterImmeasurableMP3 recording formatMPEG 1/2 Audio Layer 3Max. Bit rate320 kbpsCassette deckFrequency response Normal (type I) 50 Hz - 14 000 HzWow and flutter0.15% (WRMS)GeneralPower requirementAC 230 V , 50 HzPower consumption165 W (in operation)27 W (on standby with Ecology Mode off)1.2 W (on standby with Ecology Mode on)Dimensions (approx.)205 mm 370 mm 380.5 mm (W/H/D)Mass (approx.)10.5 kgType3-way 4-speaker Bass-Reflex Type Twin Hyper Power-Drive Subwoofer and Front TwinWooferSpeakersSubwoofer16.0 cm (6-5/16 in.) cone 1Main woofer10.0 cm (3-15/16 in.) cone 2Tweeter5.0 cm (2 in.) cone 1Power Handling Capacity Subwoofer165 WMain Speaker 75 WImpedanceSubwoofer6 Main Speaker 6 Frequency RangeSubwoofer30 Hz 325 HzMain Speaker 70 Hz 32 000 HzSound Pressure Level78 dB/WmSubwoofer86 dB/WmMain Speaker220 mm 432 mm 357 mmDimensions (W H D)8-11/16 in. 17-1/16 in. 14-1/16 in.)Mass8.2 kg (18.1 lbs) eachRadioFans.CN 收音机爱 好者资料库(No.MB014)1-51.6Preventing 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.1.6.1 Grounding to prevent damage by static electricityStatic electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players. 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. 1.7Handling 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 longa time 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.1.8Attention when traverse unit is decomposed*Please refer to Disassembly method in the text for the CD pickup unit. Apply solder to the short land sections before the flexible wire is disconnected from the connector CN231 on the CD servo board.(If the flexible wire is disconnected without applying solder, the CD 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 strapFront panel assemblyPrimary boardCN231Banda(No.MB014)1-7SECTION 3DISASSEMBLY3.1Main body3.1.1Removing the metal cover(See Fig.13)(1) Remove the six screws A on the back of the body.(2) Remove the screw B on each side of the body.(3) Remove the metal cover from the body by lifting the rearpart of the cover.CAUTION:Do not break the front panel tab fitted to the metal cover.Fig.1Fig.2Fig.3AAAMetal coverMetal coverBMetal coverB1-8 (No.MB014)3.1.2Removing the CD changer mechanism assembly(See Fig.4, 5) Prior to performing the following procedure, remove the metalcover.(1) Disconnect the card wire from connector CN651 on the CDservo control board on the right bottom of the CD changermechanism assembly.(2) Remove the four screws C attaching the CD changermechanism assembly on top of the body.(3) Remove the CD changer mechanism assembly while liftingthe rear part.CAUTION:Do not damage the CD fitting when removing the CD changermechanism assembly.Fig.4Fig.5CD changer mechanism assemblyCD servo control boardCN651Front panel assembyCD changer mechanism assemblyCC(No.MB014)1-93.1.3Removing the front panel assembly(See Fig.69) Prior to performing the following procedure, remove the metalcover and the CD changer mechanism assembly.(1) Disconnect the card wires from connector CN44 andCN870 on the main board on the right side of the body.(2) Disconnect the wire from connector CN701 on the bridgeboard.(3) Cut the band.(4) Disconnect the wire from connector CN231,CN232 on theprimary board on the left side of the body and remove theband fixing the wire.(5) Disconnect the ground wire extending from phones boardfrom bottom chassis.(6) Remove the three screws D attaching the front panel as-sembly at the bottom of the body.(7) Release the two joints a on the lower left and right sides ofthe front panel assembly using a screwdriver, and removethe front panel assembly toward the front.REFERENCE:Front panel need to be tilt a little bit as release from bottomchassis.Fig.6Fig.7Fig.8Fig.9Front panel assemblyBridge boardCN701Main boardCN870CN44aFront panel assemblyPrimary boardCN231,CN232BandaGround wireBandPrimary boardCN231,CN232Front panel assemblyFront panel aeemblyD1-10 (No.MB014)3.1.4Removing the tuner pack assembly(See Fig.10, 11) Prior to performing the following procedure, remove the metalcover and the CD changer mechanism assembly.(1) Disconnect the card wire from connector CN1 on the tunerpack assembly on the right side of the body.(2) Remove the two screws E on the rear panel on the back ofthe body.Fig.10Fig.11Tuner pack assemblyCN1ERear panel(No.MB014)1-113.1.5Removing the rear panel(See Fig.10, 1216) Prior to performing the following procedure, remove the metalcover and the CD changer mechanism assembly.(1) Remove holding board by remove a plastic rivet and thenslide out the holding board as shown in fig. 12.(2) Disconnect the fan wire extending from the fan assemblyfrom connector CN206 on the bridge board.(3) Disconnect the card wire from connector CN1 on the tunerpack.(4) Remove four screws F from rear panel.(5) Release joints b which on right bottom and left bottom ofrear panel. The joint can be release by pull outward theside of rear panel.REFERENCE:Fan assembly and tuner pack will come off with rear panel.Fig.12Fig.13Fig.14Fig.15Fig.16Plastic rivetHolding boardRear panelBridge boardCN206Fan assemblyFFFRear panelRear panelbRear panelb1-12 (No.MB014)3.1.6Rmoving the fan assembly(See Fig.17, 18) Prior to performing the following procedure, remove the metalcover, the CD changer mechanism assembly and the rear pan-el.(1) Cut the band with for fan wire holder.(2) Remove two screws G on the rear panel.(3) Rotate fan assembly in clockwise direction to release fanassembly from rear panel (joints c).Fig.17Fig.183.1.7Removing the main board(See Fig.19) Prior to performing the following procedure, remove the metalcover, the CD changer mechanism assembly and the rear pan-el.(1) Cut off the band.(2) Disconnect the card wires from connector CN44 andCN870 on the main board.(3) Remove the screw H attaching the main board.(4) Disconnect connector CN217 and CN311 on the mainboard outward and release from the base chassis (joint d)upward.Fig.19GRear panelccFan assemblyBandCN870CN44CN311Main boardCN217BandHd(No.MB014)1-133.1.8Removing the bridge board / regulator board / heat sink(See Fig.2023) Prior to performing the following procedure, remove the metalcover, the CD changer mechanism assembly, the rear paneland main board.(1) Disconnect the wire from connector CN212, CN213 andCN214 on the primary board respectively and remove theband attaching the wires.(2) Disconnect the wire from connector CN701 on the bridgeboard.(3) Disconnect the ground wire extending from the bridgeboard from bottom chassis(4) Remove the two screws I attaching the heat sink bracketand move the heat sink in the direction of the arrow to re-lease from the base chassis. The bridge board and the reg-ulator board come off with the heat sink.(5) Remove the two screws J attaching the heat sink bracket.(6) Remove the two screws M, detach bridge board from reg-ulator board by disconnect connector CN205.(7) Remove the two screws K and two screws L to detachregulator board from heat sink.CAUTION:As assembly back the regulator board and bridge board toheat sink.Regulator board must be assembly to heat sink first andscrews K and L must be screwed before bridge board attachto regulator board.Fig.20Fig.21Fig.22Fig.23BandCN212Primary boardCN213CN214CN701Bridge boardBridge boardGround wireRegulator boardHeat sinkIIHeat sink bracketJHeat sinkBridge boardRegulator boardHeat sink bracketHeat sink bracketHeat sinkRegulator boardBridge boardCN215CN205LKML1-14 (No.MB014)3.1.9Removing the power transformer assembly(See Fig 24, 25) Prior to performing the following procedure, remove the metalcover, the CD changer mechanism assembly, the rear panel,the main board and the bridge board / regulator board.(1) Remove the screw N attaching the primary board.(2) Disconnect the wire from connector CN231 on the primaryboard.(3) Remove the four screws O attaching the power transform-er assembly.(4) Detach the cord stopper from the base chassis upward.REFERENCE:When disconnecting the power cord from connector CN250 onthe primary board, remove the fixing band.Fig.24Fig.253.1.10 Front panel assembly Prior to performing the following procedure, remove the metalcover, the CD changer mechanism assembly and the frontpanel assembly.3.1.11 Removing the cassette mechanism assembly(See Fig.26)(1) Disconnect the card wire from connector CN33 on the headamplifier & mechanism control board.(2) Remove the two screws P, and the two screws Q attach-ing the cassette mechanism assembly.3.1.12 Removing the headphone board(See Fig.26)(1) Remove the screw R and pull out the headphone boardbackward.(2) Cut off the band.Fig.26Power transformer assemblyPrimary boardNPrimary boardCN231CN250Cord stopperFIxing bandPower transformer assemblyO O Head amplifier & mechanism control boardCN33Headphone boardPQQRBand(No.MB014)1-153.1.13 Rmoving the switch / micon board(See Fig.2729) Prior to performing the following procedure, disconnect thecard wire from CN43 on the micon board.(1) Disconnect the card wire from connector CN840 on the mi-con board.(2) Remove the fifteen screws S attaching the switch / miconboard.(3) Remove the spacer fixing the wire.(4) Move the switch /micon board in the direction of the arrowto disconnect the wire from connector CN880 and CN900on the micon board.Fig.27Fig.28Fig.29SSSSCN43Micon boardCN840Switch boardSpacerSpacerSwitch boardCN880Switch boardCN900Micon boardCN43CN8401-16 (No.MB014)3.1.14 Removing the FL board assembly(See Fig.30, 31) Prior to performing the following procedure, remove the switch/ micon board.(1) Remove the five screws T attaching the stay bracket (1).(2) Remove the three screws U attaching the FL board as-sembly.Fig.30Fig.31TStay bracket (1)UUUFL board assembly(No.MB014)1-173.1.15 Removing the button board(See Fig.3234) Prior to performing the following procedure, remove the switch/micon board.(1) Pull out the preset knob, the volume knob and the soundmode knob.(2) Remove the two screws V attaching the knob holder. Re-move the nut from the front panel.(3) Remove the eleven screws W attaching the button board.Fig.32Fig.33Fig.34Preset knobVolume knobSound mode knobVKnob holderNut1-18 (No.MB014)3.2CD changer mechanism3.2.1Removing the tray assembly (See Fig.1 5)(1) Remove the two screws A from the top cover and releasethe two joints a on both sides of the body.(2) Remove the top cover with the two rods attached to the topcover and lifter assembly respectively.(3) Remove the open det lever on the left side of the body.(4) Push part b of the slide (R) assembly on the right side ofthe body to unlock the tray assembly. Draw out the trays to-ward the front.Attention:The tray can be locked if all tray assemblies are at-tached.(5) From top of the body, move the stopper tab c in the direc-tion of the arrow and release. Pull out the tray assembliesfrom the body.Caution:Remove the tray assembly from top tray 5 in order.Attention:When reattaching the sub tray of the tray assembly, or whenremoving the CD remaining inside, refer to another section.Fig.1Fig.2Fig.3Fig.4Fig.5Top coverLifter assemblyRodAaaAaRodTop coverLifter assemblyaOpen det leverbTray assembly(Tray 5)c(No.MB014)1-193.2.2Removing the servo control board (See Fig.6 9)Caution:Solder the short-circuit point on the pickup before disconnect-ing the card wire extending from the pickup. If you do not followthis instruction, the pickup may be damaged.(1) Disconnect the card wire from connector CN251 and eachwire from connector CN252, CN253 and CN602 on the ser-vo control board on the bottom of the body. Disconnect thewire from joint d.(2) Solder the short round point on the flexible board of the pickup.(3) Remove the four screws B and turn the servo control boardas shown in the figure.(4) Disco