InFocus LP840 Projector 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 driver.bMake sure “Search for the best driver” is selected, then click Next.cUncheck any checked boxes, then click Next. Windows automatically 
locates the driver. If this driver has been removed, reload the driver using 
your Windows operating system CD.dWhen Windows finds the driver, you are ready to install it. Click Next.
abcd 
						

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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 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 page 32.
Adjust the Contrast or Brightness in the Picture menu. 
See page 31 for help with the menus.
adjust height
elevatorfoot
elevator
foot release
button
release 
button
adjust distancezoom focus
adjust Zoom and Focus
lens shift
adjust Lens Shiftadjust Contrast or Brightness
contrast
brightness 
						

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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 the 
yellow Video 3 connector), and plug the red connector into the right audio 
in connector on the projector.
Connect the black power cable to the connector on the back of the projector 
and to your electrical outlet. NOTE: Always use the power cable that 
shipped with the projector.Optional video connectionsIf the video device uses a round, four-prong S-video connector, plug an 
S-video cable (sold separately) into the S-video connector on the video 
device and into the Video 2 connector on the projector. Use the A/V cable’s 
audio connectors as described directly above (the yellow connectors on the 
A/V cable are not used).
If the video device uses component cable connectors (sold separately), plug 
the cable’s green connectors into the green component-out connector on the 
video device and into the Video 1 green component connector (labeled “Y”) 
on the projector. Plug the component cable’s blue connectors into the blue 
component-out connector on the video device and into the blue component 
connector (labeled “Pb”) on the projector. Plug the component cable’s red 
connectors into the red component-out connector on the video device and 
into the red component connector (labeled “Pr”) on the projector. Use the 
A/V cable’s audio connectors as described above (the yellow connectors on 
the A/V cable are not used). NOTE: The component connectors can be used 
for HDTV sources (480i, 480p, 720p and 1080i formats).
connect A/V cableconnect power cableconnect S-video and video cablesconnect component cablesand video cables 
						

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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.
NOTE: The BNC connectors can be used for HDTV sources (480i, 480p, 
720p and 1080i formats).
connect BNC cables
HV
RG B 
						

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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 projection screen. If it 
doesn’t, press the Video button on the keypad. 
Adjust 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 to the screen. See page 43 for a table listing screen sizes and distances 
to the screen.
remove lens cappress Power switch press Power button
I
O
1 2
turn on video deviceadjust height
elevator
footelevator
foot release
buttonrelease
button
adjust distance 
						

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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 page 32.
Adjust the volume on the keypad or remote.
Adjust the Contrast, Brightness, Color, or Tint in the Picture menu. 
See page 31 for help with the menus.
zoom focus
adjust Zoom and Focus
lens shift
adjust Lens Shift
volumeadjust volume
adjust Picture menu
contrastbrightness
color
tint 
						

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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 
lamp off after no signals are detected for 20 minutes. After 10 additional 
minutes with no signal, the projector powers down. If an active signal is 
received before the projector powers down, the image is displayed. You 
must press the Power button to display an image after 30 minutes have 
passed. When Power Save is enabled, Screen Save is disabled. See page 36.
Turning off the projector
To turn off the projector, press the power button and verify that you want to 
turn the projector off by pressing the power button again within 3 seconds. 
You can cancel the shutdown by not pressing the power button a second 
time. The lamp turns off and the LED blinks green for over 1 minute while 
the fans continue to run to cool the lamp. When the lamp has cooled, the 
LED lights green and the fans stop. Press the power switch on the back of 
the projector and unplug the power cable to completely power off the pro-
jector.
Troubleshooting your setupIf your image appears correctly on the screen, skip to the next section. If it 
does not, troubleshoot the setup. The LED on top of the projector indicates 
the state of the projector and can help you troubleshoot. See “LED Behav-
ior” on page 46. for information on LED behavior and what it means.
The following tables show common problems. In some cases, more than one 
possible solution is provided. Try the solutions in the order they are pre-
sented. When the problem is solved, you can skip the additional solutions. 
						

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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