JVC KD-AVX1 инструкция обслуживания

ENGLISH FRANÇAIS ESP AÑOL DVD/CD RECEIVER RECEPTOR CON DVD/CD RECEPTEUR DVD/CD For installation and connections, refer to the separate manual. Para la instalación y las conexiones, refiérase al manual separado. Pour l’installation et les raccordements, se référer au manuel séparé. INSTRUCTIONS MANUAL DE INSTRUCCIONES MANUEL D’INSTRUCTIO[...]

2 ENGLISH How to forcibly eject a disc If a disc cannot be recognized by the receiver or cannot be ejected, ejects the disc as follows. “NO EJECT?” (or “EJECT OK?”) and “EMERGENCY EJECT?” appear on the monitor. Press 5 / ∞ repeatedly to select “ EMERGENCY EJECT? ” , then press OK. • If this does not work, reset your receiver. ?[...]

3 ENGLISH This product incorporates copyright protection technology that is protected by U.S. patents and other intellectual property rights. Use of this copyright protection technology must be authorized by Macrovision, and is intended for home and other limited viewing uses only unless otherwise authorized by Macrovision. Reverse engineering or d[...]

4 ENGLISH Characters shown on the monitor In addition to the Roman alphabets (A – Z, a – z), the following characters will be used to show the various information on the monitor. • You can also use the following characters to assign titles (see page 48). Accented letters Numbers and symbols How to read this manual The following methods are us[...]

5 ENGLISH Monitor adjustments ...................... 34 Other disc operations ..................... 35 Basic operations ..................................... 35 Selecting the playback modes ................ 37 List screen operations ............................ 39 Dual Zone operations ..................... 40 Playing back two sources at a time ....[...]

6 ENGLISH Introduction — Playable discs Discs you can play You can play back the following discs (12 cm and 8 cm) on this receiver: • DVD V id e o : Recorded in PAL color system with Region Code “ 2 ” (see below). – DVD-R/DVD-RW recorded in the DVD- Video format can also be played. • Video CD (V CD )/ audio CD • MP 3 / W MA /J PEG : R[...]

7 ENGLISH SOURCE MENU BACK BAND OK KD-AVX1 DISP D 1 5 2 3 67 8 9 p q 4 w e r t y T/P Control panel 1 (standby/on attenuator) button 2 • +/ – (volume +/ – ) button • SOURCE button • MENU button 3 • 5 (up) / ∞ (down) buttons • 4 / ¢ buttons 4 • OK button • 3 (play) button 5 Monitor 6 D DISP (display) button 7 • 0 (eject) button[...]

8 ENGLISH Installing the lithium coin battery (CR2025) Before using the remote controller: • Aim the remote controller directly at the remote sensor on the receiver. Make sure there is no obstacle in between. • Do not expose the remote sensor to strong light (direct sunlight or artificial lighting). Warning: • Do not install any battery other[...]

9 ENGLISH 5 TOP M (menu) button* 2 • Display the DVD and VCD* 3 disc menu. 6 DUAL button • Activate and deactivate Dual Zone. 7 VOL + / – buttons • Adjusts the volume level. • Also function as 2nd VOL +/ – buttons when pressed with SHIFT button. 8 SETUP button (for DVD/VCD)* 2 9 SHIFT button p Basic disc operation buttons* 4 : 7 (stop),[...]

10 ENGLISH ~ Turn on the power. Ÿ You cannot select some sources if they are not ready. ! For FM/AM tuner only For DAB tuner only ⁄ Adjust the volume. Volume level indicator @ Adjust the sound as you want. (See pages 41 – 43.) To drop the volume in a moment (ATT) To restore the sound, press it again. To turn off the power Getting started Basic[...]

11 ENGLISH Setting the clock 1 2 Select “ PSM ” menu. 3 Set the hour and minute. 1 Select “ Clock Hr ” (hour), then adjust the hour. 2 Select “ Clock Min ” (minute), then adjust the minute. 3 Select “ 24H/12H ” , then select “ 24Hours ” or “ 12Hours ” . SOURCE MENU 4 Finish the procedure. OK OK How to go back to the previous[...]

12 ENGLISH To tune in to a station manually In step ! on the left column... 1 2 Select the desired station frequencies. Radio operations Listening to the radio ~ Ÿ Lights up when receiving an FM stereo broadcast with sufficient signal strength. Selected band appears. ! Start searching for a station. When a station is received, searching stops. To [...]

13 ENGLISH When an FM stereo broadcast is hard to receive 1 2 Select “ MODE ” menu. 3 Select “ MONO ” , then set it to “ On ” . 4 Finish the procedure. Lights up when monaural mode is activated. Reception improves, but stereo effect will be lost. To restore the stereo effect, repeat the same procedure to set “ MONO ” to “ Off ” [...]

14 ENGLISH “ -SSM- ” is shown until automatic presetting is over. Local FM stations with the strongest signals are searched and stored automatically in the FM band. Manual presetting Ex.: Storing FM station of 92.5 MHz into the preset number 1 of the FM1 band. 1 2 3 BACK BAND SOURCE MENU TUNER (FM1/2/3,AM) Storing stations in memory You can pre[...]

15 ENGLISH 4 PRESET LIST appears. 5 “ Preset1 ” flashes for a while. How to exit from menus or lists Menu or list operations are canceled and the screen returns to the source screen or DVD/ VCD/JPEG playback. Listening to a preset station While selecting TUNER as the source.... 1 The preset list appears. 2 Select the preset station (1 – 6) yo[...]

16 ENGLISH ! Select one of the twenty-nine PTY codes. If there is a station broadcasting a programme of the same PTY code as you have selected, that station is tuned in. PTY codes News, Affairs, Info, Sport, Educate, Drama, Culture, Science, Varied, Pop M (music), Rock M (music), Easy M (music), Light M (music), Classics, Other M (music), Weather, [...]

17 ENGLISH What you can do with RDS RDS (Radio Data System) allows FM stations to send an additional signal along with their regular programme signals. By receiving the RDS data, this receiver can do the following: • Programme Type (PTY) Search (see page 16) • Temporarily switches to Traffic Announcement — TA Standby Reception. (See the right[...]

18 ENGLISH To deactivate the PTY Standby Reception, select “ OFF ” on “ PTY ” in the “ MODE ” menu. goes off. • See “ When an FM stereo broadcast is hard to receive ” on page 13 to see how to move into the “ MODE ” menu. Tracking the same programme — Network-Tracking Reception When driving in an area where FM reception is no[...]

19 ENGLISH The disc type is automatically detected, and playback starts automatically (for DVD: automatic start depends on its internal program). If the current disc is an audio CD, CD Text, MP3/WMA, JPEG, or VCD without PBC, all tracks will be played repeatedly until you change the source or eject the disc. • If a title list or disc menu appears[...]

20 ENGLISH • When inserting a DVD disc: DVD playback starts automatically on the monitor when the parking brake is applied. The screen such as below appears when pressing D DISP. • To return to DVD playback, press D DISP again. • When inserting an MP3/WMA/JPEG *1 disc : * 1 Each time you press D DISP, the monitor changes between the source sc[...]

21 ENGLISH Basic operations Operations Monitor indication and/or next operation To stop play temporarily Playback is paused. A still picture appears. A Frame by frame playback B Slow motion playback • No sound comes out during Slow Motion Playback. • When playing a VCD, Reverse Slow Motion Playback is prohibited. To resume normal play: To repla[...]

22 ENGLISH To locate a particular title/chapter/ track directly • For DVD: During play or pause—select a chapter. During stop—select a title. • For MP3/WMA/JPEG: Select a track within the same folder. Select the number corresponding to the item you want (see page 9). To locate a title/folder To the next title/folder. To the previous title/f[...]

23 ENGLISH DVD/VCD special functions Selecting audio languages For DVD: You can select the language to listen to if the disc has multiple audio languages. Ex.: When the disc has 3 options For VCD: You can select the audio channel to play. (This is convenient when playing a Karaoke VCD.) ST : To listen to normal stereo (left/right) playback. L: To l[...]

24 ENGLISH Canceling the PBC playback 1 2 Select a track to start normal playback using the number buttons (see page 9). To resume the PBC function Zoom in 1 • For JPEG disc (effective only when pausing): 2 Move the zoomed-in position. • For JPEG files: You cannot move the zoomed-in position when the entire picture is still displayed on the mon[...]

25 ENGLISH On-Screen disc operations 1 Disc type 2 • Audio signal format type (for DVD and DTS CD) • PBC (only for VCD) 3 Current playback mode 4 Playback information T01 C01 Current title/chapter TRACK 01 Current track (for VCD) TOTAL Elapsed playing time of the disc T. REM Remaining disc time (for VCD)/ remaining title time (for DVD) TIME Ela[...]

26 ENGLISH To erase the on-screen bar • The on-screen bar for a CD or MP3/WMA/ JPEG disc automatically disappears in a few seconds after the last operation. • The selectable options for Repeat/Intro/ Randam plays: Repeat play (See page 37.) DVD: REPEAT , REPEAT Repeat play (See page 37.) VCD (while PBC is not in use): (Canceled) REPEAT MP3/WMA:[...]

27 ENGLISH INTRO , INTRO Intro play (See page 38.) VCD (while PBC is not in use): (Canceled) INTRO MP3/WMA: INTRO TRACK INTRO FOLDER (Canceled) CD Text/audio CD: INTRO TRACK (Canceled) RANDOM , RANDOM Random play (See page 38.) VCD (while PBC is not in use): (Canceled) RANDOM MP3/WMA: RANDOM DISC RANDOM FOLDER (Canceled) CD Text/audio CD: RANDOM DI[...]

28 ENGLISH To select a folder or track While Dual Zone (see page 40) is on.... 1 Select “ Folder” column or “ Track” column on the control screen. 2 Select a folder or track. CD Text/audio CD control screen 1 Selected playback mode 2 Elapsed playing time of the current track 3 Operation mode icon ‰ (play), 7 (stop), 8 (pause), ¡ (fast- f[...]

29 ENGLISH For MP3/WMA/JPEG: While Dual Zone is on and the disc play stops.... 1 Display the folder list. Each time you press the button, the list screen comes on and goes off. 2 Select a folder on the list. The track list of the selected folder appears. To go back to the folder list 3 Select a track on the list. For CD Text/audio CD: While Dual Zo[...]

30 ENGLISH 4 Select an item you want to set up. Ex.: When selecting “ DOWN MIX ” 5 Select an option. To set other items, repeat steps 4 and 5 . 6 Finish the procedure. You can store the initial disc playback status. • While playing, no change can be made on the setup menu. Basic setting procedure While stop.... 1 2 Select “ MODE ” menu. 3[...]

31 ENGLISH You can also set up from the remote controller when a DVD or a VCD is inserted. • While playing, no change can be made on the setup menu. • When shipped from the factory, the on-screen languge is set to English. To change the language, see page 32. From the remote controller: While stop.... 1 2 Ex.: When selecting the “ AUDIO ” m[...]

32 ENGLISH Item Contents MENU LANGUA GE Select the initial disc menu language. AUDIO LANGU AGE Select the initial audio language. SUBTITLE Select the initial subtitle language or erase the subtitle (OFF). ON SCR EEN LANGUAGE (OSD LANGU AGE) Select the language for the Setup menu called up from the remote controller (see page 31) and some indication[...]

33 ENGLISH Item Contents DIGIT AL AUDIO OUTPUT (D. AUDI O OUTPUT) Select the signal format to be emitted through the DIGITAL OUT (Optical) terminal on the rear. For details, see page 65. • PCM ONLY (PCM) : Select this when connecting an amplifier or a decoder incompatible with Dolby Digital, DTS or MPEG Audio, or connecting to a recording device.[...]

34 ENGLISH You can adjust color and brightness of the monitor on the unit. While selecting disc (DVD, VCD, or JPEG disc only) as the source.... 1 2 Select “ MODE ” menu. 3 Select “ Screen Cont. ” 4 Select an item to adjust. 5 Adjust the item. Ex.: When adjusting “ BRIGHT ” • Each time you press 4 / ¢ , the menu screen disappears for [...]

35 ENGLISH In this section, you can learn how to use the buttons on the control panel in order to operate the DVD/CD player. Basic operations To stop a disc To play a disc again To eject a disc Other disc operations To fast-forward or reverse the chapter/track Fast-forwards. Reverses. • The search speed changes to x 2 ] x 10 for all discs (DVD, V[...]

36 ENGLISH To go to the next or previous folders To next folders. To previous folders. • To select a particular track in a folder (for MP3/WMA disc) after selecting a folder: To change monitor indication • Each time you press D DISP, the monitor changes between the source screen and DVD/ VCD/JPEG playback. To scroll the disc information For CD:[...]

37 ENGLISH Selecting the playback modes You can use only one of the following playback modes at a time. 1 2 Select “ MODE ” menu. 3 Select your desired playback mode. Repeat • For DVD: During play or pause. • For VCD: While PBC (see page 24) is not in use. Ex.: When “ Track ” is selected Mode Plays repeatedly Chapter * 1 : The current c[...]

38 ENGLISH Random • For VCD: While PBC (see page 24) is not in use. Ex.: When “ Disc ” is selected Mode Plays at random Fold er *4 : All tracks of the current folder, then tracks of the next folder and so on. • lights up. Disc : All tracks of the disc. • lights up. Off : Cancels. Intro • For VCD: While PBC (see page 24) is not in use. E[...]

39 ENGLISH 4 Select the list you want to use. When “ File ” is selected, the file list of the current folder appears. 5 Select the folder/file you want. When selecting a folder from the list, the playback of the first track in the folder starts. • The track list appears when selecting the current folder on the folder list. • You can also ac[...]

40 ENGLISH On the control panel: You can also activate and deactivate Dual Zone. 1 2 Select “ D-ZONE ” . 3 Select “ On ” . The source automatically changes to “ DISC ” when Dual Zone is activated. To cancel Dual Zone operations, select “ Off ” on step 3 . Playing back two sources at a time You can connect external audio equipment to[...]

41 ENGLISH Sound adjustments Selecting preset sound modes You can select a preset sound mode suitable to the music genre. Available sound modes: Hard Rock/R&B/Pop/Jazz/Dance/Country/ Reggae/Classic User1/User2/User3 Flat (To cancel the sound mode) 1 2 Select “ EQ ” menu. 1 Select the frequency band to adjust — 60 Hz, 150 Hz, 400 Hz, 1kHz,[...]

42 ENGLISH Adjusting the sound You can adjust the sound characteristics to your preference. 1 2 Select “ SEL ” menu. 3 Select your desired adjustment item. Fad/Bal (Fader/Balance) Adjust fader — speaker output balance between the front and rear speakers. • Upmost — front only • Downmost — rear only When using a two-speaker system, set[...]

43 ENGLISH Vol Adjust (volume adjust) Adjust and store the volume level of each source except FM. Once you have made an adjustment, it is memorized, and the volume level will automatically increase or decrease by adjusted level when you change the source. Adjust to match the input level to the FM sound level. • – 12 (min) to +12 (max.) HPF (Hig[...]

44 ENGLISH General settings — PSM Basic procedure You can change PSM (Preferred Setting Mode) items listed in the table that follows. 1 2 Select “ PSM ” menu. 3 Select a PSM item. Ex.: When you select “ Dimmer ” 4 Adjust the PSM item selected. 5 Repeat steps 3 and 4 to adjust the other PSM items if necessary. 6 Finish the procedure. Indic[...]

45 ENGLISH Indications Selectable settings, [reference page] Dimmer Au to: [Initial]; Dims the monitor when you turn on the headlights. Off: Cancels. On: Activates dimmer. Time Set : Sets the Dimmer On/Off time. Bright Brightness You can adjust the brightness to make the monitor clear and legible. – 15 (darkest) to +15 (brightest) [Initial]; 0 ?[...]

46 ENGLISH Indications Selectable settings, [reference page] IF Fi lter Intermediate frequency filter In some areas, adjacent stations may interfere with each other. If this interference occurs, noise may be heard. Aut o: [Initial]; When this type of interference occurs, this unit automatically increases the tuner selectivity so that interference n[...]

47 ENGLISH Indications Selectable settings, [reference page] Amp Gain Amplifier gain control You can change the maximum volume level of this receiver. High P ower: [Initial]; VOL 00 – VOL 50 Low Power: VOL 00 – VOL 30 (Select this if the maximum power of the speaker is less than 50 W to prevent them from damaging the speaker.) Off: Deactivates [...]

48 ENGLISH Assigning titles to the sources You can assign titles to CDs (both in this receiver and in the CD changer), and change the source names of AV-INPUT and EXT-INPUT. Sources Maximum number of characters AV-INPUT/EXT- INPUT Up to 16 characters DISC/CD-CH Up to 32 characters (up to 30 discs) • You cannot assign a title to a DVD, VCD, CD Tex[...]

49 ENGLISH Detaching the control panel When detaching or attaching the control panel, be careful not to damage the connectors on the back of the control panel and on the panel holder. Detaching the control panel Before detaching the control panel, be sure to turn off the power. Attaching the control panel Changing the control panel angle The contro[...]

50 ENGLISH CD changer operations ~ * If you have changed “ EXT INPUT ” setting to “ EXT IN ” (see page 46), you cannot select the CD changer. Playing discs in the CD changer About the CD changer It is recommended to use the JVC MP3- compatible CD changer with your receiver. • You can also connect other CH-X series CD changers (except CH-X[...]

51 ENGLISH To fast-forward or reverse the track Fast-forwards. Reverses. To go to the next or previous tracks To the following tracks. To the beginning of the current track, then the previous tracks. To go to the next or previous folders (only for MP3 discs) To next folders. To previous folders. When using the remote controller.... Ÿ Select a disc[...]

52 ENGLISH Selecting the playback modes You can use only one of the following playback modes at a time. 1 2 Select “ MODE ” menu. 3 Select your desired playback mode. 4 Finish the Procedure. SOURCE MENU OK OK Selectable modes Repeat Mode Plays repeatedly Tr a c k : The current track. • lights up. Fold er * : All tracks of the current folder. [...]

53 ENGLISH External component operations Playing an external component You can connect an external component to LINE IN plug and VIDEO IN plug on the rear, or to the CD changer jack on the rear using the KS-U57 Line Input Adapter (not supplied) or KS-U58 AUX Input Adapter (not supplied). • For connection, see Installation/Connection Manual (separ[...]

54 ENGLISH DAB tuner operations Listening to the DAB tuner ~ Ÿ ! Start searching for an ensemble. When an ensemble is received, searching stops. To stop searching, press the same button again. ⁄ Select a service (either primary or secondary) to listen to. To tune in to an ensemble manually In step ! .... Activate “ Manual Search ” Select ens[...]

55 ENGLISH 3 Select one of the DRC signals level (1, 2, or 3). The reinforcement level increases from 1 to 3. 4 Finish the procedure. • The DRC indicator will be highlighted only when receiving DRC signals from the tuned service. To search for your favorite service You can search for either Dynamic or Static PTY codes. • Operations are exactly [...]

56 ENGLISH Tuning in to a preset DAB service When the source is DAB.... 1 2 3 Select the preset number you want. • You can move to the lists of the other DAB bands by pressing 4 / ¢ . When using the remote controller.... To directly select the preset service Storing DAB services in memory You can preset six DAB services (primary) for each band. [...]

57 ENGLISH 2 Select “ MODE ” menu. 3 Select “ Announce ” . 4 Appears when the service is received. • If the ANN indicator lights up, Announcement Standby Reception is activated. • If the ANN indicator flashes, Announcement Standby Reception is not yet activated. To activate, tune in to another service providing these signals. The ANN in[...]

58 ENGLISH Tracing the same programme — Alternative Frequency Reception You can keep listening to the same programme by activating the Alternative Frequency Reception. • While receiving a DAB service: When driving in an area where a DAB service cannot be received, this receiver automatically tunes in to another ensemble or FM RDS station, broad[...]

59 ENGLISH To keep discs clean A dirty disc may not play correctly. If a disc does become dirty, wipe it with a soft cloth in a straight line from center to edge. • Do not use any solvent (for example, conventional record cleaner, spray, thinner, benzine, etc.) to clean discs. To play new discs New discs may have some rough spots around the inner[...]

60 ENGLISH Language codes Code Language Code Language Code Language AA AB AF AM AR AS AY AZ BA BE BG BH BI BN BO BR CA CO CS CY DZ EL EO ET EU FA FI FJ FO FY GA GD GL GN GU HA HI HR HU HY IA IE Afar Abkhazian Afrikaans Ameharic Arabic Assamese Aymara Azerbaijani Bashkir Byelorussian Bulgarian Bihari Bislama Bengali, Bangla Tibetan Breton Catalan Co[...]

61 ENGLISH More about this receiver Basic operations Turning on the power • By pressing SOURCE on the receiver, you can also turn on the power. Selecting the sources • When no disc is loaded in the receiver and Dual Zone is off, “ DISC ” cannot be selected. • Without connecting to the CD changer or the DAB tuner, “ CD-CH ” or “ DAB [...]

62 ENGLISH • Some DVD-R/DVD-RW or CD-R/CD-RW may not play back on this receiver because of their disc characteristics, and for the following causes: – Discs are dirty or scratched. – Moisture condensation occurs on the lens inside the receiver. – The pickup lens inside the receiver is dirty. – CD-R/CD-RW on which the files are written wit[...]

63 ENGLISH • While playing (or pausing), you cannot change these languages. After you change any of these language settings, eject the disc and insert it (or another disc) again so that your setting takes effect. • When you select “ 16:9 ” for a picture whose aspect ratio is 4:3, the picture slightly changes due to the process for convertin[...]

64 ENGLISH About sounds reproduced through the rear terminals • Through the analog terminals (Speaker out/LINE OUT/2nd AUDIO OUT): 2-channel signal is emitted. When playing a multi-channel encoded disc, multi-channel signals are downmixed. (DOWN MIX: see page 33.) • Through DIGITAL OUT (optical): Digital signals (Linear PCM, Dolby Digital, DTS,[...]

65 ENGLISH Output signals through the DIGITAL OUT terminal Output signals are different depending on the “ DIGITAL AUDIO OUTPUT ” setting on the setup menu (see page 33). DIGITAL AUDIO OUTPUT Output Signals Playback Disc STREAM/PCM DOLBY DIGITAL/PCM PCM ONLY DVD 48 kHz, 16/20/24 bits Linear PCM 48 kHz, 16 bits stereo Linear PCM 96 kHz, Linear P[...]

66 ENGLISH Troubleshooting What appears to be trouble is not always serious. Check the following points before calling a service center. Symptoms Causes Remedies General • Sound cannot be heard from the speakers. The volume level is set to the minimum level. Adjust it to the optimum level. Connections are incorrect. Check the cords and connection[...]

67 ENGLISH Symptoms Causes Remedies Disc playback • Disc cannot be played back. Disc is inserted upside down. Insert the disc correctly. • CD-R/CD-RW or DVD-R/ DVD-RW cannot be played back. • Tracks on the CD-R/ CD-RW or DVD-R/ DVD-RW cannot be skipped. CD-R/CD-RW or DVD-R/ DVD-RW is not finalized. • Insert a finalized CD-R/ CD-RW or DVD-R/[...]

68 ENGLISH Symptoms Causes Remedies MP3/WMA playback • Disc cannot be played back. No MP3/WMA tracks are recorded on the disc. Change the disc. MP3/WMA tracks do not have the extension code <.mp3> or <.wma> in their file names. Add the extension code <.mp3> or <.wma> to their file names. MP3/WMA tracks are not recorded in [...]

69 ENGLISH Symptoms Causes Remedies JPEG playback • Disc cannot be played back. No JPEG files are recorded on the disc. Change the disc. JPEG files do not have the extension code <.jpg> or in their file names. Add the extension code <.jpg> to their file names. JPEG files are not recorded in a compliant format. Change the disc. Record [...]

70 ENGLISH Symptoms Causes Remedies DAB tuner • “ No DAB Signal ” appears on the monitor. Signal is too weak. Search for another ensemble. • “ Reset08 ” appears on the monitor. This receiver is not connected to the DAB tuner correctly. Connect this receiver and the DAB tuner correctly and reset the receiver (see page 2). • The DAB tun[...]

71 ENGLISH Specifications AUDIO AMPLIFIER SECTION Maximum Power Output: Front: 50 W per channel Rear: 50 W per channel Continuous Power Output (RMS): Front: 20 W per channel into 4 Ω , 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Rear: 20 W per channel into 4 Ω , 40 Hz to 20 000 Hz at no more than 0.8% total harmonic disto[...]

© 2005 Victor Company of Japan, Limited EN, SP, FR 0205MNMMDWJEIN Having TROUBLE with operation? Please reset your unit Refer to page of How to reset your unit ¿Tiene PROBLEMAS con la operación? Por favor reinicialice su unidad Consulte la página de Cómo reposicionar su unidad Vous avez des PROBLÈMES de fonctionnement? Réinitialisez votre ap[...]