InFocus LP840 Projector User Manual

21
Image fuzzy or cropped Set your computer’s display resolution to 
the native resolution of the projector 
(Start>Settings>Control 
Panel>Display>Settings tab, 
select1024x768) Image clear and not cropped
Remote control navigation buttons not working 
with my computerConnect USB cable (page 8) then load USB 
drivers, if needed (page 11). Or, connect 
wired remote cable and reboot your 
computer (page 8).Remote controls navigation buttons. 
See page 27 for information on the remote
A
AA
For a laptop,...

22
Projector troubleshooting
Problem Solution Result
Image not square Adjust keystone the Picture menuSquare image
Image not sharpAdjust the focus on the keypad or 
Sharpness in the Picture>Advanced menuCorrect image
Image does not fit 16:9 screenChange aspect ratio to 16:9 in 
Picture>Aspect ratio menuCorrect image
ABAB
AB 

23
Image upside downTurn on/off Ceiling in Settings>System 
menuCorrect image
Image reversed left to right
Turn on/off Rear in Settings>System menu
Correct image 
Projected colors don’t match source
Adjust color, tint, color temperature, 
brightness, contrast in the menusCorrect image
A
B
AB
A
AB
COLOR
COLOR 

24
Lamp won’t turn on, Temp LED solid red (page 46)Make sure vents aren’t blocked; allow 
projector to cool for one minute Unplug projector; wait one minute; plug in 
projector and turn it on: lamp lights
Lamp won’t turn on, Lamp LED blinking red 
(page 46)Lamp must be replaced (page 40)
Lamp turns onsolid
red
temp
lamp
 
startup
screen
blinking
red
temp
lamp
startup
screen 

25 Still having problems?
If you need assistance, visit our website or call us. See the inside of the back 
cover for a list of all contact numbers and relevant web addresses.
This product is backed by a limited two-year warranty. An extended war-
ranty plan may be purchased from your dealer. When sending the projector 
in for repair, we recommend shipping the unit in its original packing mate-
rial, or having a professional packaging company pack the unit. An optional 
ATA shipping case is available for...

26
Using the keypad buttonsMost buttons are described in detail in other sections, but here is an over-
view of their functions:
power–turns the projector on (page 10) and off (page 16).
lens shift–shifts the projected image up or down
zoom–moves the projected image closer or further away.
focus–adjusts the clarity.
menu–opens the on-screen menus (page 31).
up/down arrows–navigates to and adjusts settings in the menus (page 31).
select–confirms choices made in the menus (page 31).
volume–adjusts sound...

27
Using the remote control The remote uses two (2) provided AAA batteries. They are easily installed 
by sliding the cover off the remotes back, aligning the + and - ends of the 
batteries, sliding them into place, and then replacing the cover.
To operate, point the remote at the projection screen or at the projector (not 
at the computer). The range of optimum operation is about 30 feet (9.14m).
To use the laser pointer, press and hold the Laser button. The laser turns off 
when the button is released,...

28
Using the audio To play sound from the projector, connect your source to the Audio In con-
nector on the projector.
To adjust the volume, use the buttons on the keypad or remote.
To adjust the balance, or loudness, use the Audio menu (see page 35).
To mute the sound, press the Mute button.Troubleshooting audioIf there is no sound, check the following:
 Make sure the audio cable is connected.
 Make sure mute isn’t active. 
 Make sure the volume is turned up enough. Press the volume button 
on the...

29
Optimizing computer imagesAfter your computer is connected properly and the computer ’s image is on 
the screen, you can optimize the image using the onscreen menus. For gen-
eral information on using the menus, see page 31.
 Adjust the Keystone, Contrast, or Brightness in the Picture menu. 
 Change the Aspect Ratio. Aspect Ratio is the ratio of the image width to 
image height. TV screens are usually 1.33:1, also known as 4:3. HDTV 
and most DVDs are 1.78:1, or 16:9. Choose the option that best...

30
Optimizing video imagesAfter the video device is connected properly and the image is on the screen, 
you can optimize the image using the onscreen menus. For general informa-
tion on using the menus, see page 31.
 Adjust the Keystone, Contrast, Brightness, Color, or Tint in the Picture 
menu. See page 32. 
 Change the Aspect ratio. Aspect ratio is the ratio of the image width to 
image height. TV screens are usually 1.33:1, also known as 4:3. HDTV 
and most DVDs are 1.78:1, or 16:9. Choose the...