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InFocus Projector Lp790hb Specifications

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    							33
    MAINTENANCE & TROUBLESHOOTING
     
    	
    
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    Cleaning the Lens
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    Cleaning the Dust Filter
     
    	
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    							34
    Maintenance & Troubleshooting
    F
    IGURE 25
    Removing the dust filter
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    FIGURE 26
    Cleaning the filter  
    						
    							35
    Replacing the Projection Lamp
    WARNING: To avoid burns, 
    allow the projector to cool for at 
    least 60 minutes before you 
    replace the lamp. Never extract 
    the lamp housing while the projec-
    tor is operating.
     
    
    
    	
    
    	
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    WARNING: Be extremely careful 
    when removing the lamp housing. 
    In the unlikely event that the bulb 
    ruptures, small glass fragments 
    may be generated. The lamp mod-
    ule is designed to contain these 
    fragments, but use caution when 
    removing the lamp module.
    F
    IGURE 27
    Removing the screw on the lamp door
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    							36
    Maintenance & Troubleshooting
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    IGURE 28
    Loosening the screws on the lamp housing
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    FIGURE 29
    Removing the lamp housing
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    WARNING: Do not drop the
    lamp module or touch the glass
    bulb! The glass may shatter and
    cause injury.
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    							37
    Replacing the Batteries in the Remote Control
     
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    FIGURE 30
    Replacing the batteries in the remote
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    Using the Security Lock 
     
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    FIGURE 31
    Installing the security lock 
    						
    							38
    Maintenance & Troubleshooting
    Tr o u b l e s h o o t i n g
    LEDs
     
    
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    Problem: The projector is not running
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    							39
    Problem: Only the start-up screen displays
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    							40
    Maintenance & Troubleshooting
    Problem: Image is too wide or narrow for screen
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    Problem: Lamp seems to be getting dimmer
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    							42
    Maintenance & Troubleshooting 
    						
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