InFocus LP340 Manuel d'utilisation

Tech Tip

LP340/340B/350 Lamp Maintenance Page 1

LP340/350 Lamp Maintenance

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In dirty or dusty environments, the dust filter screens on LP340/350 lamp modules can become plugged,

causing excessively high temperatures inside the lamp module. The high temperatures can cause

premature lamp failure. Routine maintenance to remove dust and dirt from the filter screens lowers the

lamp operating temperature and lengthens lamp life.

This Tech Tip describes how to clean the lamp module dust filter screens. Clean them every 200-250

hours when the projector is used in areas with high levels of airborne contaminants like lint, dust or

smoke.

You must remove the lamp from the projector to clean the dust filter screens.

CAUTION! The lamp module gets very hot during operation. Allow the lamp to cool for 30 minutes before

handling it.

Removing the lamp module

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 Remove the lamp door on the bottom of the projector by releasing the two tabs on the inside

edge of the door with your fingers. Then swing the door open.



If necessary, you can also use a coin. Take care not to scratch the finish on the projector.

Tech Tip

LP340/340B/350 Lamp Maintenance Page 2

 Loosen the two captive screws that secure the lamp to the lamp housing.



 Grasp the orange tape in the middle of the lamp, then lift the module out of the projector.

Cleaning the lamp module dust filter screens

 After you remove the lamp module, examine the condition of the dust filter screens. Two screens

are located on each side of the lamp module. Dirt and dust accumulation on the screens must be

removed.

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Tech Tip

LP340/340B/350 Lamp Maintenance Page 3

 Use a vacuum cleaner and a small brush to clean the screens on both sides of the lamp housing.

Then use a cotton swab dipped in isopropyl alcohol to lightly wipe each screen. When you've

wiped each screen, use the vacuum cleaner again to remove any remaining contaminants.

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Cleaning the lamphouse and replacing the lamp module

 Before you replace the lamp, use the vacuum cleaner to remove dust and dirt from the

lamphouse in the projector.

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 Replace the lamp and lamp door.

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