Cleaning the Lamp Housing Screens
In dirty or dusty environments, the two dust filter screens in the lamp hous- ing can become clogged, causing high temperatures and premature lamp failure. Routine maintenance to remove dust from the screens lowers the lamp operating temperature and prolongs lamp life. To maximize lamp life you should clean the screen every 250 hours.
1Remove the lamp housing.
2Examine the dust filter screens on the lamp housing. If necessary, use a vacuum cleaner set on low power to clean the screens. Be careful not to disturb any internal components when cleaning the screens.
3Replace the lamp housing and lamp door.
Using the security lock
The projector has a security lock for use with a PC Guardian Cable Lock System. Refer to the information that came with the lock for instructions on how to use it.
lamp housing
lamp
two screens 
(one on each side of the lamp housing)
security lock
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