InFocus SP4805 Handbuch

42

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 at least every 250 hours depending upon envi-

ronmental conditions. The dirtier or dustier the environment, the more

often you should clean the screens.

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

SP4805-01_usrguide.fm Page 42 Monday, April 19, 2004 10:10 AM

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