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Remplacer une lampe Xénon sur un projecteur de cinéma n'est pas compliqué. Il faut simplement respecter une procédure précise . La façon de faire n'est pas la même suivant les marques de projecteurs. Ici, vous allez voir la procédure sur le projecteur de marque Christie, type 2210 . La lampe à changer est d'une puissance de 2 000 watts. Sur les autres projecteurs de la marque Christie, la procédure est identique.

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    Pour cela, allez dans le menu en bas à gauche, faites Connexion puis fournissez votre nom d'utilisateur (ici operator) et votre mot de passe.
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    Choisissez Configuration avancée puis l'onglet historique de la lampe et notez la durée de la lampe qui est encore installée dans le projecteur, vous en aurez besoin pour vos stats et votre tenue de stock.
  3. 3
    Éteignez le xénon. Attendez le refroidissement complet, puis éteignez le projecteur et coupez son alimentation au compteur. Attendez 3 minutes. En tout, un bon quart d'heure est nécessaire avant de pouvoir ouvrir la machine .
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  5. Elle ne partent pas complètement, restent fixées sur la porte, même quand elles sont dévissées entièrement, c'est voulu, pour éviter qu'elles ne tombent.
  6. Ensuite, retirez le câble d'alimentation de la lampe qui est fixé sur le bornier +. (une vis BTR).
  7. Dévissez ensuite la bague arrière de serrage, puis dégagez-la en tirant un peu dessus vers l'avant tout en faisant de petits va et viens d'avant en arrière pour accompagner le dégagement .
  8. Une fois que la lampe est dégagée de sa fixation arrière, vous pouvez la sortir par l'avant du miroir, ça passe, c'est juste, mais ça passe. Procéder délicatement pour éviter d'abimer le miroir .
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  10. Pour cela, suivez les étapes précédentes dans le sens inverse : insérez le culot dans son logement, serrez la bague arrière, pas trop fort, avec une pince ou à la main puis serrez la vis BTR de la pince de serrage. Refixez le câble d'alimentation sur le bornier positif, le cache en plastique, la petite porte. Vérifiez les serrages , puis refermez la porte du projecteur.
  11. 11
    Remettez le projecteur sous tension au compteur électrique. Allumez-le sur le Pad puis connectez-le à nouveau en faisant Connexion et en entrant comme au début votre nom d'utilisateur et mot de passe.
  12. Suivez les instructions en faisant suivant à chaque étape : notez le numéro de série de la nouvelle lampe installée, la durée utilisée ( 0 h), la raison (entretien régulier). Ensuite, lancez les réglages automatiques. Le projecteur fera lui même les réglages de miroir et de lampe. Attendez deux fois 10 minutes (préchauffage de la lampe et refroidissement).
  13. 13
    Éteignez le projecteur. Coupez à nouveau l'alimentation puis rallumez le tout. C'est prêt ! Vous pouvez à nouveau utiliser la machine.
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Conseils

  • Veillez à bien respecter le temps de refroidissement avant d'ouvrir votre projecteur, sinon, le choc thermique que la lampe va subir peut la faire exploser, son bulbe est sous pression, vous seriez blessé. Cela permet aussi de laisser le temps aux condensateurs de se vider.
  • Utilisez les EPI (équipements de protection individuels) : il faut normalement porter des gants, pour éviter de toucher les culots et le bulbe de la lampe avec les doigts, cela peut réduire sa durée de vie. Il faut normalement porter une visière de protection contre les éclats de verre en cas d'explosion pour procéder au changement.
  • La durée de vie préconisée par le constructeur de la lampe est à dissocier de la garantie. Par exemple, pour la lampe de 2 000 watts ici changée, la garantie est à 1 000 h d'utilisation, alors que la durée de vie estimée par le constructeur est à 1 500 h. Il faut mieux respecter la durée de la garantie , sinon, en cas d'explosion de la lampe dans le projecteur, la garantie ne fonctionnera pas si d'autres pièces sont endommagées (le miroir notamment).
  • Quels sont les indicateurs pour savoir s'il faut changer une lampe avant sa durée de garantie ? Soit elle a des difficultés récurrentes à l'allumage et dans ce cas c'est qu'il faut la changer. Soit elle « pompe », c'est-à-dire que la lumière n'est pas stable, les blancs varient en intensité . Pour être fixé, il faut projeter à l'écran, avant ou après une séance, une mire blanche. Le phénomène saute aux yeux, on voit la lumière baisser puis augmenter très rapidement. Il faut alors mieux changer la lampe.
  • Il faut savoir qu'en moyenne, une lampe Xénon est à 100 % de son rendement jusqu'à 30 % de sa durée de garantie ou de sa durée de vie. Après, la lumière commence à perdre en qualité. Dans le cas d'une diffusion de film dans une salle où serait présent un réalisateur ou un professionnel concerné directement par le film diffusé, je vous conseille de mettre en lampe neuve, une mauvaise lumière se voit très vite pour un oeil averti.
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