JVC KD-LH401 service manual Troubleshooting, Symptoms Causes Remedies

Page 132

TROUBLESHOOTING

What appears to be trouble is not always serious. Check the following points before calling a service

center.

 

 

 

 

Symptoms

Causes

Remedies

 

 

 

 

 

 

 

 

 

 

Sound cannot be heard

The volume level is set to the

Adjust it to the optimum level.

 

 

 

 

 

 

from the speakers.

minimum level.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connections are incorrect.

Check the cords and connections.

 

 

 

 

 

 

 

 

 

 

This unit does not work

The built-in microcomputer

Press the reset button on the

 

 

 

 

at all.

functions incorrectly due to

control panel. (Your preset

General

 

 

 

 

 

noise, etc.

adjustments will also be

 

 

 

 

 

 

erased.) (See page 2.)

 

 

 

 

 

 

 

 

“Panel Connect Error”

The control panel is not attach

Remove the control panel, wipe

 

 

 

appears on the display.

correctly and firmly.

the connectors, then attach it

 

 

 

 

 

 

 

again. (See page 55.)

 

 

 

 

 

 

 

• When “Reset P00” to

There is something blocking the

Press the reset button on the

 

 

 

 

“Reset P44” appears on

control panel movement.

control panel. (See page 2.) If

 

 

 

 

the display.

 

the reset button does not work,

 

 

 

 

 

 

 

check the installation. (Ex. you

 

 

 

 

 

 

 

have used a screw which is

 

 

 

 

 

 

 

longer than specified.)

 

 

 

 

 

 

 

 

 

 

 

 

SSM (Strong-station

Signals are too weak.

Store stations manually.

 

 

Tuner

 

 

 

Sequential Memory)

 

 

 

 

 

 

 

automatic preset does

 

 

 

 

 

 

 

not work.

 

 

 

 

 

 

 

 

 

 

 

 

 

Static noise while

The aerial is not connected

Connect the aerial firmly.

 

 

 

 

 

 

listening to the radio.

firmly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Disc cannot be played back.

Disc is inserted upside down.

Insert the disc correctly.

 

 

 

 

 

 

 

 

 

 

CD-R/CD-RW cannot be

CD-R/CD-RW is not finalized.

• Insert a finalized CD-R/

 

 

 

 

played back.

 

CD-RW.

 

 

• Tracks on the CD-R/

 

• Finalize the CD-R/CD-RW

 

 

 

 

CD-RW cannot be

 

with the component which

 

 

 

 

skipped.

 

you used for recording.

 

 

 

 

 

 

 

 

 

Disc cannot be ejected.

Disc is locked.

Unlock the disc. (See page 30.)

 

 

 

 

 

 

 

 

 

Playback

 

Disc cannot be

The CD player may function

While pressing

 

 

 

 

 

 

 

 

 

recognized (“No Disc,”

incorrectly.

(standby/on attenuator), press

 

 

 

“Loading Error,” or “Eject

 

and hold 0 (eject) for more than

 

 

 

Error” flashes on the

 

2 seconds to eject the disc.

Disc

 

 

 

display.)

 

Before re-inserting a disc, wait

 

 

 

 

 

 

for several seconds.

 

 

 

 

 

 

 

 

 

 

 

• Disc sound is sometimes

You are driving on rough roads.

Stop playback while driving on

 

 

 

 

interrupted.

 

rough roads.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Disc is scratched.

Change the disc.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connections are incorrect.

Check the cords and connections.

 

 

 

 

 

 

 

 

 

“No Disc” flashes on the

No disc in the loading slot.

Insert a disc into the loading slot.

 

 

 

 

display.

 

 

 

 

 

 

 

 

 

 

Disc is inserted incorrectly.

Insert the disc correctly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ENGLISH

71

Image 132
Contents KD-LH401 Specification Section Precaution Preventing static electricity Grounding to prevent damage by static electricityHandling the traverse unit optical pickup Reproduction and Position of Labels Important for laser productsSection Specific Service Instructions Main body section Removing the front panel assembly See Removing the heat sink SeeRemoving the top chassis assembly See Figs.3 to ReferenceRemoving the front chassis See Figs.7 Removing the mechanism control board SeeRemoving the CD mechanism assembly See Removing the main board See Figs.11Top chassis Removing the rear bracket See Removing the gear bracket unit SeeFPC guide Rear cover assembly P Removing the front board See Figs.15 toCD Mechanism section Removing the top cover See Figs.1 Removing the connector board See Figs.3 to Removing the DET switch See Figs.6 DETRemoving the chassis unit See Figs.8 Removing the clamper assembly See Figs.10 Removing the loading / feed motor assembly See Figs.12 Removing the pickup unit See Figs.14 to Reattaching the pickup unit See Figs.14 toRemoving the top plate assembly See Removing the trigger arm See Figs.19Removing the mode sw. / select lock arm See Figs.22 Reassembling the mode sw. / select lock arm See Figs.24 to ReferenceRemoving the select arm R / link plate See Figs.27 Reattaching the Select arm R / link plate See Figs.29Removing the loading roller assembly See Figs.31 to Removing the loading gear 5, 6 and 7 See Figs.35 Removing the gears See Figs.37 to Pull out the feed gearRemoving the turn table / spindle motor See Figs.41 „ Standard volume position „ Dummy loadFeed section Focus section Spindle sectionTracking section Signal processing section Maintenance of laser pickup Replacement of laser pickupANT No.MA0631-33 Victor Company of JAPAN, Limited Contents No.MA063SCH 2004/4CD-ROM No.SML200404 Safety precaution IC573 X571IC572 IC571Standard schematic diagrams Main amplifier sectionCD servo control section SN74AHCU04PW-XLCD & Key control section C823Printed circuit boards Main boardFront board Mecha control boardM O No.MA063SCH Parts List Exploded view of general assembly and parts list Main board C32 General Assembly CD mechanism assembly and parts list CD mechanism Electrical parts list QERF1CM-226Z Capacitor Part Name Description Local R74 NRSA63J-101X Front board TA E Capacitor Micon control board NRSA63J-4R7X MG Resistor Part Name Description Local R685 NRSA63J-682X Memo Packing materials and accessories parts list Packing and Accessories KD-LH401 How to reset your unit Important for Laser ProductsContents Location of the Buttons Control panelIllumination Navigation for easy operations Control dial ¢ buttonsRemote controller Installing the battery Remove the battery holderReturn the battery holder Place the batteryAdjust the sound as you want. See pages 32 Current sound mode iEQ seeBasic Operations Select the sourceTo drop the volume in a moment To turn off the powerSetting the clock Adjust the hour Set the minuteTo check the clock time when the unit is Set the clock systemRadio Operations Listening to the radioSearching for a station automatically Auto search Start searching for a stationSearching for a station manually Manual search Each time you press Button, the band changes as FollowsFM station automatic preset SSM When an FM stereo broadcast is hard to receiveStart automatic preset Storing stations in memoryManual preset Tune in to a station in this example, of 92.5 MHzEach time you press the button, the band changes as follows Selecting a preset station directly Selecting a preset station using the preset station listSelect the number 1 6 for the preset station you want When receiving an AM or non FM RDS Changing the display patternStation See the following pagesRDS Operations What you can do with RDSTo use Network-Tracking Reception Using TA Standby Reception PTY Stnby standby setting screen Appears on the displayUsing PTY Standby Reception To select your favorite PTY code for PTY Standby ReceptionTo set PTY Standby Reception Select one of the twenty-nine PTY codes. SeeSearching for your favorite programme To store your favorite programme typesTo store your favorite programme types, see To search for your favorite programme typeTo search for your favorite programme Other convenient RDS functions and adjustments Setting the TA volume levelAutomatic clock adjustment To activate programme search, follow the procedure belowPTY codes Same programme can be received on different frequenciesDisc Operations About MP3 and WMA discsPlaying a disc Open the control panelDisplay indications when inserting an audio To stop play and eject the discCD or a CD Text Or a WMA discs To return the control panel to its previousWhat is ImageLink? To activate ImageLink, follow the procedure belowLocating a track or a Particular portion on a discTo go to the next or previous tracks To go to a track quicklyTo select a particular track in a folder, press ¢ or 4 after selecting the folderSelecting a track and start playback Selecting a folder and start playbackSelect the number 1 6 for the folder you want to play Select the number 1 6 for the track you want to playTo play back tracks at random Random Play To play back tracks repeatedly Repeat PlayTo cancel the prohibition and unlock the disc To cancel intro scan, select Intro Off byProhibiting disc ejection To play back only intros Intro ScanWhile playing an audio CD or a CD Text disc Tag is set to OffCurrent track NumberSound Adjustments Adjusting the soundMake adjustments Select the item you want to adjustSelecting preset sound modes iEQ intelligent equalizer To adjust the input level of each source -Vol AdjPress SEL select once Available sound modesSound modes preset frequency level settings Press the number button to select the sound mode you wantTo cancel the sound mode, select Flat To exit from the sound mode selectionStoring your own sound modes 4 Make adjustments as you like Select the sound mode you want to adjustStore the adjustment you made Enter the sound adjustment modeView MeterShake OffInstall / Start the program Graphic DisplaysImport the images Retouch and edit the imagesPress M Mode after the disc is detected Downloading images and animationsPress number button 6 to show the download selection screen If you want to cancel the procedure You can assign your own names when editing a CD-RSelect highlight a file you want to download If it is OK, press number button 1 to start downloadingFile name appears, and the unit will Ask you Download OK? AgainDeleting unwanted files To delete all the stored files at a timeTime, and Movie To delete the files stored for OpeningTo delete the stored files for Picture one by one AgainActivating the graphic screen using either picture or movie Ex. When you select OpeningGraphics setting screen appears on Display Activating the downloaded images and animationsSelect a file you want Finish the setting To cancel all graphic displays, select Off in stepSelect UserMovie, UserSlide, or UserPict Select UserPictBasic Procedure AdjustOther Main Functions Ex. To change ContrastPreferred Setting Mode PSM items TA Volume Indications Selectable values/itemsPTY Stnby AF-Regn’lTo adjust the display contrast level -Contrast To show the graphics on the display -GraphicsTo select the display illumination pattern -LCD Type To turn the tag display on or off-TagTo change the FM tuner selectivity -IF Filter To select the external component to use -Ext InputTo select the amplifier gain control -Amp.Gain Set the dimmer mode as you like Setting the desired color for each source Select the source that you want toSet the display color for Press and hold SEL select for moreSelect the user color adjustment screen One of the user color adjustment screens appearsYou can adjust within the range of 00 to Creating your own color-UserWhen you select a source, the power Automatically comes on Assigning names to the sourcesTo erase the entered characters Sources Maximum number CharactersChanging the control panel angle Control panel angles changes as followsConnectors Detaching the control panelAttaching the control panel CD Changer Operations Playing discsSelect the CD changer CD-CH To change the display pattern To go to a particular disc directlyTo fast-forward or reverse the track Selected disc number Current track and elapsed playing timeTo skip to the next or previous folder only for MP3 discs Selecting a disc/folder/track using the name lists Disc name list Folder name list Track name listDisplay can show only six names at a time Selected disc numberFor MP3 discs For CDs Mode Active Plays at random For MP3 discs For CDsMode Active Plays repeatedly To cancel repeat play, select Repeat Off byMode changes as follows For MP3 discs For CDs Mode ActiveExternal Component Operations Turn on the connected component and start playing the sourceWhat is DAB system? DAB Tuner OperationsSelect the DAB tuner Select the DAB band DAB1, DAB2, or DAB3To tune in to a particular ensemble without searching Start searching for an ensembleTo stop searching before an ensemble is Storing DAB services in memory To restore the FM/AM tunerTo cancel the DRC effect, select DRC Off To select the next service To select the previous serviceService Selecting a preset service using the preset service listUsing Announcement Standby Reception What you can do more withRoad Traffic News Standby Reception TA Standby Reception For Announcement Standby ReceptionTo activate Announcement Standby Reception How Announcement Standby Reception worksAnnouncement type Travel Programmes about travelSearching for your favorite service While receiving a DAB serviceTo use Alternative Reception While receiving an FM RDS stationChanging the display pattern Troubleshooting Symptoms Causes RemediesNoise is generated Track played back is not an MP3/WMA track although it hasWma Longer readout time is Readout time varies due toAvailable characters Accented lettersGraphics CD Changer Upper case Lower caseMaintenance Handling discsSpecifications FM TunerMW Tuner LW TunerRefer to page of How to reset your unit Siehe Seite Zurücksetzen des GerätsZie de pagina met de paragraaf Het apparaat terugstellen Und Erdung ausgelegt. Verfügt Ihr Die folgenden Teile werden zusammen mitDiesem Gerät geliefert Nach ihrer Überprüfung, die Teile richtig einsetzenHinweis RemarqueFuse blows Sound is distortedAvant de commencer la connexion Vérifiez Alvorens de verbindingen tot stand tePour l’amplificateur seulement KD-LH401Oder KS-U57 *4 KD-LH401
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