LP840_50_60_UG.qxd  1/21/05  2:22 PM  Page 1
LP®840/LP®850/LP®860 INSTALLATION & INTEGRATION PROJECTOR.
USER’S GUIDE
Declaration of Conformity
Canada
Manufacturer: InFocus Corporation, 27700B SW Parkway Ave. Wilsonville, Oregon 
97070 USA
European Office: Strawinskylaan 585, 1077 XX Amsterdam, The Netherlands
We declare under our sole responsibility that this projector conform to the following 
directives and norms: 
EMC Directive 89/336/EEC, Amended by 93/68/EEC
EMC: EN 55022
           EN 55024
 EN 61000-3-2
 EN 61000-3-3
Low Voltage Directive 73/23/EEC, Amended by 93/68/EEC
Safety: EN 60950: 2000 
October, 2003
Trademarks
Apple, Macintosh, and PowerBook are trademarks or registered trademarks of Apple 
Computer, Inc. IBM is a trademark or registered trademark of International Business 
Machines, Inc. Microsoft, PowerPoint, and Windows are trademarks or registered 
trademarks of Microsoft Corporation. Adobe and Acrobat are trademarks or 
registered trademarks of Adobe Systems Incorporated. InFocus, ProjectorManager, 
ProjectorNet, and LP are trademarks or registered trademarks of InFocus 
Corporation. 
FCC Warning
This equipment has been tested and found to comply with the limits for a Class A 
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to 
provide reasonable protection against harmful interference when the equipment is 
operated in a commercial environment. This equipment generates, uses, and can 
radiate radio frequency energy and, if not installed and used in accordance with the 
instruction manual, may cause harmful interference to radio communications. 
Operation of this equipment in a residential area is likely to cause harmful 
interference in which case the user will be required to correct the interference at his 
own expense.
EN 55022 Warning
This is a Class A product. In a domestic environment it may cause radio interference, 
in which case the user may be required to take adequate measures. The typical use is 
in a conference room, meeting room or auditorium.
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
Agency Approvals
UL, CUL, NOM, IRAM, GOST, C-tick
Other specific Country Approvals may apply, see please product certification label. 
Remote Control Warning
Laser radiation class II product; wavelength 650nm; maximum output 1mW. Remote 
control complies with applicable requirements of 21 CFR 1040.10 and 1040.11. Remote 
control complies with applicable requirements of EN 60 825-1: 1994 +A11.
Do not look into laser beam emitted from the front of the remote control
Location of laser beam warning labels on remote
InFocus reserves the right to alter product offerings and specifications at any time 
without notice.
2
If you are experienced in setting up presentation systems, use the included 
Quick Set Up card. For complete details on connecting and operating the 
projector, refer to this User’s Guide. Electronic versions of this User’s Guide 
in multiple languages are available on the included CD and on our website.
The website also has technical specifications (an interactive image size cal-
culator, laptop activation commands, connector pin outs, a glossary, the 
product data sheet), a web store to buy accessories, and a page for online 
registration. See the inside of the back cover for a list of all relevant web 
addresses.
Table of Contents
Introduction
Positioning the projector
Connecting a computer 
Required computer connections 
Displaying a computer image 
First-time projector use with Windows 98 
Adjusting the image 
Connecting a video device 
Displaying a video image 
Shutting down the projector 
Troubleshooting your setup 
Using the keypad buttons 
Using the remote control 
Using the audio 
Optimizing computer images 
Presentation features 
Optimizing video images 
Customizing the projector 
Using the menus 
Picture menu 
Settings menu 
Maintenance 
Cleaning the lens 
Changing the lens 
Replacing the projection lamp 
Cleaning the dust filter 
Using the security lock 
Appendix 
Projected image size 
LED Behavior 
RS-232 commands 
5
7
8
8
10
11
13
14
16
18
18
26
27
28
29
29
30
30
31
32
35
39
39
39
40
42
42
43
43
44
45
3
Important Operating Considerations for Safety
Place the projector in a horizontal position no greater than 15 degrees 
off axis.
Locate the projector in a well-ventilated area without any obstructions 
to intake or exhaust vents. Do not place the projector on a tablecloth or 
other soft covering that may block the vents. 
Locate the projector at least 4' (1.2 m) away from any heating or cooling 
vents.
 Use only InFocus-approved ceiling mounts.
 Use only the power cord provided. A surge-protected power strip is 
recommended.
Refer to this manual for proper startup and shutdown procedures.
In the unlikely event of the lamp rupturing, discard any edible items 
placed in the surrounding area and thoroughly clean the area along all 
sides of the projector. Wash hands after cleaning the area and handling 
the ruptured lamp. This product has a lamp which contains a very 
small amount of mercury. Dispose of it as required by local, state or 
federal ordinances and regulations. For more information see 
www.eiae.org.
Follow these instructions to help ensure image quality and lamp life over 
the life of the projector. Failure to follow these instructions may affect the 
warranty. For complete details of the warranty, see the Warranty section at 
the end of this User's Guide.
2 ft (.6m)
2 ft (.6m)
2 ft (.6m)
Do not place objects in the areas along the left, back and front sides of the projector
For ceiling mount applications, this area should be 5 feet (1.5m).
5 ft (1.5m)
4
Introduction
Your new multimedia projector provides three computer, three video, and 
two audio inputs, one audio output, and RS-232 control. The LP840 and 
LP850 have XGA 1024x768 resolution while the LP860 has SXGA+ 
1400x1050 resolution. Optional user-changeable short, fixed short, long and 
super long throw lenses make this a flexible product suitable for many dif-
ferent uses. The projector is easy to connect, easy to use, and easy to main-
tain. 
Product specifications
To read the latest specifications on your multimedia projector, be sure to 
visit our website. Web address information is located on the back inside 
cover of this User’s Guide.
Accessories
The standard accessories that came with your projector can be found on the 
packing list that came with your projector. Optional accessories are listed in 
the Accessories catalog that came with the projector and can also found on 
our website. See the inside back cover for the web address.
Online Registration
Register your projector on our website to receive product updates, 
announcements, and registration incentives. See the inside back cover for 
the web address.
Projector components and features: front
heat vent
speakers
 
elevator foot release
lens
Projector components and features: back
keypad
air intake
vent
remote
control
receiver (IR)
elevator foot release
handle
air intake
vent
5
air intake
vent
back 
foot
connectors
Connector Panel
The projector provides three computer and three video connection options: 
one M1-D (DVI with USB)
one VESA computer
one BNC (RGBHV and Pr, Pb, Y)
one component RCA video (Pr, Pb, Y)
one S-video
one composite RCA video
The projector provides computer and video connectors for audio support: 
The projector also provides the following connectors:
two composite RCA stereo audio (L, R)
one audio out
two audio ins for computer
one wired remote
one monitor out 
RS-232 serial connector (for serial control)
RJ-45 connector (for networked control via ProjectorNet software)
The RS-232 Command Line Interface (CLI) specifications and commands 
are available on our website. See the back inside cover of this User’s Guide 
for website information.
VESA computer
component video
M1-D computer
monitor
RS232 
serial control
RJ-45
wired
remote
remote
control
receiver
(IR)
lock
computer
audio
 
BNC
composite
video
external
speakers
(audio out)
s-video
power
connector
power switch
6
Positioning the projector
To determine where to position the projector, consider the size and shape of 
your screen, the location of your power outlets, and the distance between 
the projector and the rest of your equipment. Here are some general guide-
lines:
Position the projector on a flat surface at a right angle to the screen. The 
projector (with the standard lens) must be at least 3 feet (0.9m) from the 
projection screen.
Position the projector within 10 feet (3m) of your power source and 
within 6 feet (1.8m) of your video device (unless you purchase exten-
sion cables). To ensure adequate cable access, do not place the projector 
within 6 inches (.15m) of a wall or other object.
If you are installing the projector on the ceiling, refer to the installation 
guide that comes with the Ceiling Mount Kit for more information. To 
turn the image upside down, see “Ceiling” on page 35. We recom-
mends using an authorized ceiling mount. The Ceiling Mount Kit is 
sold separately; see the Accessories catalog that came with this projec-
tor or visit our website for more information.
Position the projector the desired distance from the screen. The distance 
from the lens of the projector to the screen, the zoom setting, and the 
video format determine the size of the projected image. For information 
about image sizes at different distances, see “Projected image size” on 
page 43.
For the standard lens that comes with the projector, the image exits at a 
given angle. However, the lens shift feature makes the image offset 
variable. The image offset is 100% at a 10:0 ratio when the projector is in 
4:3 mode (default mode). This means that if you have an image 10’ 
high, all 10’ will appear above the center of the lens. 
The image offset is 50% when the lens shift is at a 1:1 ratio. This means 
that if you have an image 10’ high, the bottom of the image will be 5’ 
below the center of the lens. 
For information about the optional lenses image offsets, see “Projected 
image size” on page 43.
Projection angle in 4:3 mode (default)
10:0
1:1
lens center
10 ft high
image
10:0
bottom of image
100% above lens
center
1:0
bottom of image
50% below lens 
center
7
Connecting a computer
connect computer cable
Required computer connections
Connect one end of the VESA computer cable to the Computer 2 connector 
on the projector. Connect the other end to the video port on your computer. 
If you are using a desktop computer, you first need to disconnect the moni-
tor cable from the computer’s video port. 
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 computer connections
To control your computer’s mouse using the projector’s remote control, con-
nect the USB and DVI cables to the USB and DVI ports on your computer, 
and connect the other end to the Computer 1 (M1-D) connector on the pro-
jector. USB drivers must be installed to use the USB feature. For more infor-
mation, see page 12.
If your projector cannot receive the remote’s signal due to IR interference, 
you can connect directly to the projector via a remote cable. To do so, plug 
the remote cable into the wired remote connector on the projector. Plug the 
other end into the connector on the remote,
 connect power cable
connect M1-D cable
connect wired remote
To have sound with your presentation, connect the audio cable to your com-
puter and to the corresponding computer Audio In connector on the projec-
tor. 
connect audio cable
8