InFocus Projector Lp840 User Manual

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First-time projector use with Windows 98The first time you connect a computer running Windows 98 to the projector, 
the computer recognizes the projector as “new hardware” and the Add 
New Hardware Wizard appears. Follow these instructions to use the Wiz-
ard to load the correct driver (which was installed with your Windows 
operating system).
If you are running Windows 2000, Windows ME, or Window XP, skip these 
steps and go to “Adjusting the image” on page 13.aClick Next to begin searching for the...

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Skip this page if you did not connect a USB mouse cable
For Windows 98:
 If you connected the USB cable, the Add New Hardware Wizard 
appears again. Drivers must be installed to use the USB functionality. 
The Wizard launches two times. 
The first time it detects a USB Human Interface Device (for the key-
board). 
The second time it detects a USB Human Interface Device (for the 
mouse). 
For Windows 2000, Windows ME, and Windows XP:
 The USB drivers are automatically installed.  

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Adjusting the imageAdjust the height of the projector, if necessary, by pressing the release but-
tons on each side of the projector ’s front to extend the elevator feet. 
Position the projector the desired distance from the screen at a 90 degree 
angle (perpendicular) to the screen. 
See page 43 for a table listing screen sizes and distances.
Adjust the zoom or focus by pressing the power Zoom or power Focus 
buttons on the keypad until the desired image size and focus are produced.
You can also...

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Connecting a video device Standard video connectionsPlug the audio/video (A/V) cable’s yellow connector into the video-out 
connector on the video device. Plug the other yellow connector into the yel-
low Video 3 connector on the projector. Plug a white connector into the left 
audio out connector on the video device and plug a red connector into the 
right audio out connector on the video device. Plug the remaining white 
connector into the left audio in connector on the projector (to the right of...

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You can also connect to your video device using a BNC cable. Connect the 
BNC connectors of the BNC cable to the appropriate Computer 3 connec-
tors on the projector. Connect the other end to the video port on your video 
device. Use the A/V cable’s audio connectors as described on the previous 
page (the yellow connectors on the A/V cable are not used). 
When 4 BNCs are connected, the projector handles a composite synch on H. 
When 3 BNCs are connected, the projector handles a composite synch on G....

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Displaying a video imageRemove the lens cap. 
Press the power switch on the back of the projector to the on position, then 
press the Pow e r button on the top of the projector.
The LED flashes green and the fans start to run. When the lamp comes on, 
the startup screen is displayed and the LED is steady green. It can take a 
minute for the image to achieve full brightness. 
? No startup screen? Get help on page 19.
Plug in and turn on the video device.
The video device’s image should appear on the...

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Adjust the zoom or focus by pressing the power Zoom or power Focus 
buttons on the keypad until the desired image size and focus are produced.
You can also adjust the zoom and focus via the menus. See page 32
If the image is not on the screen or viewing area, adjust the it by pressing the 
lens shift button on the keypad. 
Press the upper Lens Shift button to shift the lens upward. Press the lower 
Lens Shift button to shift the lens downward
.
You can also adjust the lens shift via the menus. See...

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Shutting down the projectorThe projector automatically blanks the screen after no active source is 
detected for 30 minutes. This blank screen helps preserve the life of the pro-
jector. The image returns when an active source is detected or a remote or 
keypad button is pressed.
Screen Save
You can make the blank screen appear after five minutes by turning on 
Screen Save in the Settings>System menu. See page 36.
Pow e r  S av e
The projector also has a Power Save feature that automatically turns the...

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Source Troubleshooting
Problem Solution Result
No startup screenPlug power cable in, press power switch,
press power button. Remove lens cap.
Correct image
Only startup screen appears
Press the Computer button 
Activate laptop’s external portComputer image projected
1
23
startup
screen
startup
screen
A
or restart
laptop
A
A 

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No computer image, just the words “Signal out of 
range” Adjust computer refresh rate in Control 
Panel>Display>Settings>Advanced>
Adapter (location varies by operating 
system)Computer image projected
A
Signal out of
range
You may also need to set a different 
resolution on your computer, as shown
in the following problem, “Image fuzzy
or cropped”
A
A