JVC-XM448BK-md-sm 维修电路原理图.pdf

INSTRUCTIONSXM-448BKFor Customer Use:Enter below the Model No. and Serial No. which are located either on the rear, bottom or side of the cabinet. Retain this information for future reference.Model No.Serial No.LVT0222-001AJMINI DISC RECORDER140837RM-SXM448J REMOTE CONTROL12345678910+10POWERPROGRAMCANCELRANDOMREPEATON/OFFTRACK MARKINGDIMMERMODEXM-448BKJ.COVER99.1.28, 3:21 PM1RadioFans.CN 收音机爱 好者资料库 CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK. DO NOT REMOVE COVER (OR BACK) NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.RISK OF ELECTRIC SHOCKDO NOT OPENThe lightning flash with arrowhead symbol, within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.CAUTIONWARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.For U.S.A.This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:Reorient or relocate the receiving antenna.Increase the separation between the equipment and receiver.Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.Consult the dealer or an experienced radio/TV technician for help. G-1 Warnings, Cautions and OthersCAUTIONTo reduce the risk of electrical shocks, fire, etc.:1.Do not remove screws, covers or cabinet.2.Do not expose this appliance to rain or moisture.1.CLASS 1 LASER PRODUCT2.DANGER: Invisible laser radiation when open andinterlock failed or defeated. Avoid direct exposure tobeam.3.CAUTION: Do not open the top cover. There are no userserviceable parts inside the Unit; leave all servicing toqualified service personnel.Caution POWER switch!Disconnect the mains plug to shut the power off completely.The POWER switch in any position does not disconnect themains line. The power can be remote controlled.XM-448BKJ.Safety99.1.28, 3:21 PM1RadioFans.CN 收音机爱 好者资料库1Welcome !We would like to thank you for purchasing one of our JVC products. Before connectingthis unit to the wall outlet, please read the instructions carefully to ensure that you obtainthe best possible performance. If you have any questions, please consult your JVC dealer.Important cautionsInstallation of the UnitSelect a place which is level, dry and neither too hot nor too cold (between 5C and35C or 41F and 95F).Leave sufficient distance between the unit and a TV set.Be sure to place the unit in a location with good ventilation.Do not use the unit in a place subject to vibrations.Do not place the unit on a carpet.Do not place the unit on top of another heat-generating piece of equipment.Power cordDo not handle the power cord with wet hands!When unplugging the unit from the wall outlet, always pull the plug, not the powercord.Malfunctions, etc.There are no user serviceable parts inside. If anything goes wrong, turn off the powerimmediately. If the same problem occurs again when the power is turned on once more,turn off the power again, unplug the power cord and consult your dealer.Do not insert any metallic object into the unit.For safe use, observe thefollowingAvoid moisture, water and dustDo not set your machine in moist or dusty places.Avoid high temperaturesDo not expose your machine to direct sunlight or set near a heating device.Do not block the ventsPoor-ventilation may damage your machine. So do not block the vents or put the unitin a poorly ventilated place.When youre awayWhen away on travel or otherwise for an extended period of time, turn off the powerand pull the plug from the electrical socket.Do not insert any foreign matter into the unitDo not insert wires, hairpins, coins, etc. into your unit.Care for the cabinetWhen cleaning your unit, use a soft cloth and follow the relevant instructions on the useof chemically-coated cloths. Avoid applying benzene, thinner or other organic solventsand disinfectants. This may cause deformation or discoloring.If water gets inside the unitTurn off the power and pull the plug from the electrical socket, then call the store whereyou made your purchase. Using the unit in this state may cause a fire or electricalshock.US and foreign patents licensed from Dolby Laboratories Licensing Corporation.EN01-16.XM-448BKJ/f99.1.28, 3:24 PM12Table of ContentsWelcome !. 1Important cautions . 1For safe use, observe the following . 1Parts Index. 3Front panel. 3Display. 3Remote control unit . 4Setting up the System . 5Supplied accessories. 5Remote control batteries. 5Operating the remote control unit. 5Connection. 6Turning the Power On and Off. 7Power On . 7Power Off. 7Playback. 8Continuous playback . 8Using the display mode . 10Program playback. 10Random playback . 12Repeat playback. 13Recording . 14Recording operation . 14Editing Functions. 17MD editing functions. 17Dividing a track (DIVIDE). 19Joining tracks (JOIN) . 20Moving a track (MOVE) . 22Erasing a track (ERASE). 23Erasing all tracks in an MD(ALL ERASE). 25Assigning the disc title and track titles. 26COMPU LINK . 30Linked Operation of the Other OptionalComponents (Compu Link). 30TEXT COMPU LINK . 31Rule on Digital Copying. 33SCMS (Serial Copy Management System). 33About MD (Mini Disc) . 34Role of the cartridge . 34Two disc types . 34ATRAC (Adaptive TRansformAcoustic Coding). 35Sound skip guard memory. 35UTOC (User Table Of Contents) . 35Handling MDs . 36MD Messages . 37MD Restrictions. 38Troubleshooting . 39Specifications. Back coverEN01-16.XM-448BKJ/f99.1.28, 3:24 PM23Parts IndexBecome familiar with the buttons and controls before use. Refer to the pages in parentheses for details.Front panel 1PHONES jack (9)2PHONES LEVEL control (9)3DISPLAY/CHARACTER button(10, 26)4INPUT SELECTOR button (15)5Display6Jog dial (4, /RECLEVEL) (9, 16)71, buttons (9)86 PLAY/PAUSE button (8, 9)97 STOP/CANCEL button(8, 11, 19, 27)p REC PAUSE button (14)qENTER button (20, 27)wSET button (11, 19, 26)eEDIT button (19)rTITLE button (26)Display1Level indicators and OVER indicator (16)2TOC indicator (20)3REC indicator (14)4Play/Pause indicators (3 (Play), 8 (Pause) (8, 9, 14)5MD editing mode indicators (19 25)(DIVIDE, JOIN, MOVE, ERASE, ALL ERASE)6Repeat mode indicators (13)(REPEAT ALL, REPEAT 1)t0 (Eject) button (8)yMD insertion slot (8)uDisc indicator (7, 14)iREPEAT button (13)oPLAY MODE button (10, 12);Remote sensor (5)a POWER button (7)sSTANDBY indicator (7)7Music calendar (19)8Play mode indicators (10, 12)(PROGRAM, RANDOM)9Character display (11 digits) (26)pMD indicator (7)qInput mode indicators (15)(DIGITAL 1, DIGITAL 2)wSampling frequency indicators (15)(32 kHz, 44.1 kHz, 48 kHz)1wqp98243567s1a;oiu ytre wq p 9 8243567DIGITAL 12MD32kHz 44.1kHz 48kHzTOCMD EDITDIVIDEJOINMOVEALL ERASEPROGRAMRANDOMREPEATALL 1 1611162712173813184914195101520L40 30 20 15 10 6 3 0 dBRRECRECOVEROVEREN01-16.XM-448BKJ/f99.1.28, 3:25 PM34Remote control unit1POWER button2PLAY MODE buttonsCANCEL (11, 19, 28)PROGRAM (11)RANDOM (12)REPEAT (13)3Numeric keys4DISPLAY buttonsON/OFF (10)DIMMER (10)MODE (10)5MD control buttonsTRACK MARKING (16) (Recording Pause) (14)8 (Pause) (9)7 (Stop) (8)3 (Play) (8)4, (9)1, (9)0 (Eject) (8)Open the cover panel as shown below to access theediting control button panel.This button doesnot function.140837RM-SXM448J REMOTE CONTROL4512345678910+101POWER23PROGRAMCANCELRANDOMREPEATON/OFFTRACK MARKINGDIMMERMODERM-SXM448J REMOTE CONTROL76SPACEEDITTITLEENTERSETCANCELSMALLLETTERPOWER378Buttons on the Inside Panel6Character input keyboard (28)Numbers, Alphabets, and Symbols7MD editing buttonsTITLE (28)EDIT (19)SET (19, 28)ENTER (20, 28)3 (Play) (8)CANCEL (19, 28) (20, 28)SMALL LETTER (28)Inside panelEN01-16.XM-448BKJ/f99.1.28, 3:25 PM45Setting up the SystemSupplied accessoriesBefore setting up your system make sure you received all of the following suppliedaccessories.Remote control unit (1)Batteries R03 (UM-4)/AAA (24F) (2)Audio pin cord (2)Optical digital cable (1)Compu Link cable (1)Text Compu Link cable (1)AC power cord (1)Remote control batteriesMatch the polarity (+ and ) on the batteries with the + and markings in the batterycompartment.CAUTION: Handle batteries properly.To avoid battery leakage or explosion:Remove batteries when the remote control unit will not be used for a long time.When you need to replace the batteries, replace both batteries at the same time withnew ones.Do not use an old battery with a new one.Do not use different types of batteries together.Operating the remote control unitThe remote control unit makes it easy to use many of the functions of the system from adistance of up to 7 m (23 feet) away.You need to point the remote control unit at the remote sensor on the front panel.R03 (UM-4)/AAA (24F)Remote sensorEN01-16.XM-448BKJ/f99.1.28, 3:25 PM56AC INDIGITAL INTEXT COMPU LINK1 (MASTER UNIT)2 (SLAVE UNIT)LEFTRIGHTCOMPU LINK- 3(SYNCHRO)IN(REC)OUT(PLAY)ANALOG1- OPTICAL- 2ConnectionSignal cable connectionsAudio pin cordsConnect to the MD jacks, TAPE jacks, etc. of an external unit.Always connect the jacks with the plugs of the same colors so as not to fail in the L(Left) and R (Right) connections.Connect the OUT (PLAY) jacks to the IN (PLAY) jacks of the external unit, and the IN(REC) jacks to its OUT (REC) jacks.Example: Amplifier/TunerExample: CD playerAudio pin cord (supplied)Optical digital cableConnect to the DIGITAL OUTjack of your DBS tuner, etc.Optical digital cableConnect to the DIGITAL OUT jack of the CD player, forexample.Connect to the COMPU LINK-3 (SYNCHRO) jack of anotherJVC component equipped with the COMPU LINK remote control system.See page 30.Optical digital cable (supplied)Be sure to remove the protective capbefore using the DIGITAL IN terminals.Keep the cap in a safe place so you canreplace it when not using the DIGITALIN terminals.Connect to the TEXTCOMPU LINK jack ofanother JVC componentequipped with the TEXTCOMPU LINK remotecontrol system.See pages 31 and 32.EN01-16.XM-448BKJ/f99.1.28, 3:25 PM67AC power cord connection First, firmly insert the supplied AC power cord into the AC inlet on the back of the unit.Next, plug the AC power cord plug into the wall outlet.Cautions Use only the JVC AC power cord provided with this unit toavoid malfunction or damage to the unit. Be sure to unplug the power cord from the outlet whengoing out or when the unit is not in use for an extendedperiod of time.Turning the Power On and OffPower On1 Press POWER on the main unit or on the remote controlunit.The STANDBY indicator goes out, the disc indicator lights in green, and the displaycomes on. The MD indicator lights up on the display.When no MD is loaded:“NO DISC” is shown on the display.When an MD is already loaded:The following messages are shown on the display in succession.“TOC Reading”The disc title, if the MD has.Number of tracks and the total playing time of the MDYou can play the MD by pressing 6 on the main unit or 3 on the remote control unit.For detailed description, see “Playback” on the next page.Power Off1 Press POWER again.The STANDBY indicator lights up, the disc indicator goes out, and the display blanks.Some power (7W) is always consumed even though power is turned off (calledStandby mode).To switch off the unit completely, unplug the AC power cord from the AC outlet.AC power cordTo wall outletAC inletAC INDIGITAL INTEXT COMPU LINK1 (MASTER UNIT)2 (SLAVE UNIT)LEFTRIGHTCOMPU LINK- 3(SYNCHRO)IN(REC)OUT(PLAY)ANALOG1- OPTICAL- 2EN01-16.XM-448BKJ/f99.1.28, 3:25 PM78PlaybackNumber of tracksTotal playing timeORYou can also usethe button on theinside panel of theremote control.ORORContinuous playbackThe basic operation for playing an MD is described below. When no MD is loaded yet,“NO DISC” is shown on the display.1 Load an MD.Hold an MD with the side on which anarrow is marked facing up, and insert it intothe slot in the direction of the arrow.The MD will be pulled in automaticallyfrom the middle.If the MD has a disc title, the displayshows the disc title then the number oftracks and total playing time of the MD.The tracks in the MD appear on themusic calendar.Note: To allow easy insertion, insert the MD along the upper part of the MD insertionslot.Caution Do not fail to observe the MD insertion direction, otherwisea malfunction will result.Shortcut:You can insert an MD in Standby mode. Then, the power is turned on and the MD ispulled in automatically.2 Press 6 on the main unit or 3 on the remote control unit.Playback starts.The 3 indicator blinks for a while and then stays lit.The playback levels for the L and R channels are shown on the level indicators.If the track has a title, the track title will be displayed before playing the track.The track number that has been played disappears from the music calendar.The MD automatically stops when the last track of the MD has finished playing.Shortcut:When you press 6 on the main unit or 3 on the remote control unit in Standby mode,the power is turned on and the MD is automatically played. However, if no MD isloaded, “NO DISC” is shown on the display.To stop the MD:Press 7 on the main unit or on the remote control unit.If the MD has a disc title, the display shows the disc title then the number of tracks andtotal playing time of the MD.To eject the MD:Press 0 on the main unit or on the remote control unit.The MD is ejected and the display changes as follows:EN01-16.XM-448BKJ/f99.1.28, 3:25 PM89To pause the MD:Press 6 on the main unit or press 8 on the remote control unit.The 8 indicator lights up.To cancel pause, press 6 on the main unit or press 3 on the remote control unit. The MDstarts from the position where it has paused.To select a track You can select a desired track during playback or in Stop mode.Main unit:During playback, turn the jog dial to the right or left to select the track you want. Then, theselected track starts playing.Turn the jog dial to the right to skip to the beginning of the next tracks.Turn the jog dial to the left to return to the beginning of the current track (or theprevious tracks).In Stop mode, you can select a track in the same way. To start playbac