InFocus Projector Lp755 User Manual

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Do you want to control your computer’s mouse from the projector’s 
remote or keypad?
If your computer has a PS/2 connector, use the PS/2 mouse cable
1Unplug the mouse cable from your computer.
NOTE: A USB mouse is hot-plug-
gable, meaning you do not need to 
re-boot your computer after con-
necting the mouse to use it. A PS-2 
mouse is not hot-pluggable.
2Plug the   end of the CableWizard mouse cable into the 
mouse connector on your computer.
3Plug the   end of the CableWizard mouse cable into the   
connector on the CableWizard.
FIGURE 9
Connecting the CableWizard monitor, audio and mouse cables to a desktop computer
If your computer has a USB connector and is running Windows 98, 
use the USB mouse cable
NOTE: The USB mouse is sup-
ported for use with Windows 98 
only.
1Plug the   end of the CableWizard mouse cable into 
the mouse connector on your computer. 
2Plug the   end of the CableWizard mouse cable into the   
connector on the CableWizard.
You must have the appropriate USB drivers installed on you 
computer to use the USB feature. Windows 98 ships with the 
appropriate drivers. 
Now you’re ready to power up the projector and your computer. 
Skip to “Powering up the Projector and Adjusting the Image” on 
page 15.
audio cable
mouse cable
monitor cable 
						

							12
Setting up the Projector
Connecting a Computer Using a VESA cable
The supplied VESA cable connects to the High Density 15-pin 
connector (HD 15) on the projector. This input is designated 
Computer 2.
1Locate the cable that connects your monitor to your computer. 
Unplug it from the computer.
2Plug one end of the VESA cable into the video connector on 
your computer. 
3Plug the other end of the VESA cable into the HD 15 connec-
tor on the projector.
Do you want to play your computer’s audio on the projector?
1Unplug the audio cable, if present, from your computer.
2Plug either end of the CableWizard audio cable into the audio 
connector on your computer.
3Plug the other end of the audio cable into the   connector 
on the projector.
FIGURE 10
Connecting the VESA computer cable to a computer
audio cable
VESA cable 
						

							13
Connecting a Video Player
1If your video player uses a round, one-prong composite video 
connector, you’ll need only the A/V cable that shipped with 
the projector. 
•If your video player uses a round, four-prong S-video con-
nector, you’ll need an S-video cable in addition to the A/V 
cable. The S-video cable is sold separately. (See “Optional 
Accessories” on page 52.)
2Plug the A/V cable’s yellow connector into the “video-out” 
port on your video player (Figure 11). This port may be 
labeled “To Monitor.”
•If you’re using an S-video cable, connect it to the “S-video 
out” connector on the video player (Figure 12).
3Plug the other yellow connector into the composite connector 
on the projector.
•If you’re using S-video, plug the other end of the cable into 
the “S-video” connector on the projector (Figure 12).
FIGURE 11
Connecting the projector to a video player using the standard A/V cable (with composite
video connector)
audio/video cable 
						

							14
Setting up the Projector
F
IGURE 12
Connecting the projector to a video player using an S-video cable and the audio con-
nectors on the standard A/V cable
4Plug the A/V cable’s white connector into the left “audio out” 
port on your video player. Plug the cable’s red connector into 
the right “audio out” port on the video player (Figure 11 and 
Figure 12).
CAUTION: Your video player
may also have a “Video Out” port
for a coaxial cable connection.
DO NOT use this to connect to the
projector.•
If you’re using an S-video cable, the yellow connectors on 
the A/V cable remain unused (Figure 12).
5Plug the A/V cable’s other white and red connectors to the 
left and right “audio in” ports on the projector.
The projector is compatible with these major broadcast video 
standards: NTSC, NTSC 4.43, PAL, PAL-M, PAL-N, and SECAM. 
It automatically adjusts to optimize its performance for the 
incoming video. The input signals for SECAM, PAL-M, and 
PAL-N video cannot be automatically detected, therefore they 
must be chosen manually; see “Video Standard” on page 31.
A/V cableS-video cable 
						

							15
Connecting an External Speaker 
To connect one or two external speakers, plug the speaker cable 
into the   (audio out) connector on the projector.
FIGURE 13
Connecting an external speaker
Powering up the Projector and Adjusting the Image
NOTE: Always use the power cord 
that shipped with the projector.
1Remove the lens cap.
2Plug the power cord into the side of the projector, then plug it 
into your electrical outlet. A surge-protected power strip is 
recommended if power surges are common in your area.
•The fans turn on and run at low speed. After the projector 
has initialized, the Power LED (Figure 18 on page 21) lights 
solid green.
3Turn on the projector by pressing the 
power button on the 
remote or keypad. (You can set the projector to turn on auto-
matically when it is powered on. See “Auto startup” on 
page 33.)
CAUTION: If the lamp LED 
remains solidly lit after the projec-
tor has powered on, the lamp 
needs to be replaced. Refer to 
“Replacing the Projection Lamp” 
on page 39 for more information. •
The InFocus startup screen displays.
4If you connected a video player, turn it on.
•Press the video button on the keypad to display the image 
from your video player. (You can select a default source to 
determine which source the projector examines first during 
power-up for active video; see “Default Source” on 
page 32.)
•Use the volume buttons to adjust the volume. 
						

							16
Setting up the Projector
•
If you don’t want to hear the sound from your video player, 
press the 
mute button.
5If you connected any external speakers, turn them on.
6If you connected your monitor, turn it on.
7If you connected your computer, turn it on. 
•The computer image should display on the projection 
screen. (If a video source is active, press the 
comp button to 
display your computer ’s image.)
NOTE: With some computers,
the order in which you power up
the equipment is very important.
Most computers should be turned
on last, after all other peripherals
have been turned on. Refer to your
computer’s documentation to
determine the correct order.•
If necessary, use the brightness buttons on the keypad to 
adjust the brightness. You can make further adjustments to 
the image from the projector ’s on-screen menus. To open 
the menus, press the 
menu button on the keypad. Then 
select the Display menu or the Image menu. For more infor-
mation about the menus, see page 24.
•If you don’t want to hear the sound from your computer, 
press the 
mute button.
Turning Off the Projector
If you want to turn off the projector for a short period of time, 
press the 
standby button on the remote or keypad. The Standby 
LED on the keypad lights solid green. This blanks the screen for 
15 minutes, but keeps the projector running. After 15 minutes, the 
projector turns off. You must press the 
power button to restart. To 
exit standby mode, press the 
standby button again. The Standby 
LED goes out. You can change the amount of time the projector 
stays in standby mode; see “Standby Time” on page 31 for 
details.
CAUTION: When you
disconnect the projector after you
have turned it off, always remove
the power cord from the electrical
outlet first, then remove it from the
projector.
To turn off the lamp, press the power button on the remote or key-
pad. 
If you want to turn the lamp back on, we recommend waiting 30 
seconds. 
						

							USING THE
PROJECTOR
3821-LP755 COV/DIV ENG  9/9/99  4:55 PM  Page 5 
						

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USING THE PROJECTOR
This section describes how to use and make adjustments to the 
projector. It also provides a reference to the keypad and remote 
buttons and the options available from the on-screen menus.
Basic Image Adjustment
1Make sure you have powered up your equipment in the right 
order (page 15).
2If the image doesn’t display completely, adjust the height and 
tilt of the projector (page 19), zoom the image (page 19 and 
page 30), or center the image by adjusting its horizontal or 
vertical position (page 30).
3If the image is out of focus, rotate the lens to focus it (page 19).
4If the image appears to shimmer or if it has blurry vertical 
bars after you have adjusted the focus, turn Auto Image 
(page 29) off and then back on to reset the automatic sync and 
tracking. If that doesn’t clear up the image, adjust the sync 
(page 29) and/or the tracking (page 30) manually.
5If the colors don’t look right, adjust the brightness (page 22) 
and tint (page 25).
Using the Remote Control
NOTE: If you can’t aim the 
remote control at the projector so 
that its signal is received 
— for 
example, when using rear projec-
tion
 — use the remote control 
cable to connect the remote 
directly to the projector. 
Point the remote control at the projection screen or at the top of 
the projector. The range for optimum operation is about 25 feet. If 
you point the remote at the projection screen, the distance to the 
screen and back to the projector must be less than or equal to 25 
feet. For best results, point the remote directly at the front or the 
rear of the projector.
The projector ships with a full-feature remote (see page 21 for a 
description of the buttons) which includes a laser pointer. The 
remote has a disk mouse and two mouse buttons, one on the top 
of the remote and one on the bottom (Figure 14). 
						

							18
Using the Projector
F
IGURE 14
Remote control
NOTE: To control the computer’s
mouse from the projector’s remote
or keypad, you must connect the
mouse cable to the CableWizard.
See page 7 for details.
Press anywhere on the edge of the disk mouse to move the cursor 
on the screen. You can move the cursor at any angle by pressing 
the corresponding edge of the disk. The mouse button on the top 
of the remote simulates your computer ’s right mouse button; the 
button on the bottom simulates your computer ’s left mouse but-
ton. When you press the disk mouse, the remote lights up. The 
light goes off 10 seconds after you stop pressing buttons. 
To use the laser, press and hold the laser button. The laser goes off 
when the button is released.
If you are creating presentations in Microsoft
® PowerPoint®, you 
can use the remote’s mouse buttons to navigate through your 
presentation while in Slide Show mode. To configure PowerPoint 
for this, choose Options from the Tools menu, click the View Tab, 
de-select the “Popup Menu on Right Mouse Click” option in the 
Slide Show section, then click OK. Then, when you’re in Power-
Point’s Slide Show mode, a left click advances to the next slide 
and a right click returns to the previous slide (other PowerPoint 
modes are not affected). 
disk mouse
right mouse button
left mouse button
(on underside of remote)
laser pointer 
						

							19
Adjusting the Projector
To focus the image, rotate the focus ring (Figure 15) until the 
image is clear. To zoom the image, rotate the zoom ring. This 
adjusts the image size without affecting focus.
FIGURE 15
Focus ring, zoom ring, and elevator button
The projector is equipped with a self-locking, quick-release eleva-
tor foot and button (Figure 15) and a leveling knob (Figure 16).
FIGURE 16
Leveling knob
focus ringzoom ring
elevator button