InFocus Projector Lp755 User Manual

30
Using the Projector
NOTE: The Manual Sync,
Manual Tracking, Horiz.
Position and Ve r t .  P o s i t i o n
options are available only for
computer sources. The projector
sets these options automatically
for a video source.Manual Tracking
The projector adjusts tracking automatically to match the video 
signal from your computer. However, if the display shows evenly 
spaced, fuzzy, vertical lines or if the projected image is too wide 
or too narrow for the screen, try turning 
Auto Image off then back...

31
Controls Menu 
 
FIGURE 24
Controls menu
Video Standard
NOTE: If you already know the 
video standard used in your geo-
graphical area, it’s often best to 
manually select it.
When Video standard is set to Auto, the projector attempts to 
pick the video standard (NTSC, NTSC 4.43, PAL, PAL-M, PAL-N, 
or SECAM) automatically based on the input signal it receives. 
(The video standard options may vary depending on your region 
of the world.) The input signals for SECAM, PAL-M, and PAL-N 
video cannot be...

32
Using the Projector
Ceiling Projection
NOTE: To order the LP755
Ceiling Mount, refer to “Optional
Accessories” on page 52.
When you turn Ceiling Projection on, the projector turns the 
image upside down for ceiling-mounted projection. Highlight 
Ceiling Projection, then click either mouse button to select turn 
this feature on and off.
Rear Projection
When you turn Rear Projection on, the projector reverses the 
image so you can project from behind a translucent screen. High-
light Rear Projection,...

33
Display Messages
This setting toggles between On and Off. When this feature is On, 
status messages such as “No signal detected” or “Standby” 
appear in the lower-right corner of the screen. Click either mouse 
button to turn this feature off and not see status messages.
Display Startup Screen
This setting toggles between On and Off. When this feature is On, 
the InFocus startup screen appears when the projector starts up 
and remains until an active source is detected. The startup screen 
contains...

34
Using the Projector
Language Menu
FIGURE 25
Language menu
You can display the on-screen menus in English, French, German, 
and Spanish. 
•Move the cursor to the language you want, then click either 
mouse button. The menus redraw immediately.
Status Menu
This is a read-only menu for informational purposes. To display 
the status window, select Show status from the menu, then click 
either mouse button. To remove the window, click either mouse 
button.
FIGURE 26
Status menu 

35
Lamp hours used
Indicates how many hours the current lamp has been in use. The 
counter starts at zero hours and counts each hour the lamp is in 
use. When the counter reaches 3000 hours, the lamp monitor light 
on the projector ’s keypad turns on. For optimum results, the 
lamp should be replaced at this time. See “Replacing the Projec-
tion Lamp” on page 39 for details.
Computer resolution 
Shows your computer ’s resolution setting. To change this, go to 
your computer ’s Control Panel and adjust...

MAINTENANCE
AND
TROUBLESHOOTING
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37
MAINTENANCE & TROUBLESHOOTING
This section describes how to:
•clean the lens
•clean the fan intake filter
•replace the projection lamp 
•replace the batteries in the remote control
•use the Kensington lock feature
•troubleshoot the projector
Cleaning the Lens
Follow these steps to clean the projection lens:
1Apply a non-abrasive camera lens cleaner to a soft, dry cloth.
•Avoid using an excessive amount of cleaner and applying 
the cleaner directly to the lens.
•Abrasive cleaners, solvents or other...

38
Maintenance & Troubleshooting
F
IGURE 27
Removing the lamp and filter doors
3Using a screwdriver or your hand, push the tab on the filter 
door forward and lift the door out.
4Clean the filter.
•Use a vacuum cleaner set on low power to remove the dust 
and dirt.
FIGURE 28
Cleaning the air filter
5Replace the filter.
•First, insert the side with the tabs, then press the other end 
in place. 

39
Replacing the Projection Lamp
WARNING: To avoid burns, 
allow the projector to cool for at 
least 30 minutes before you open 
the lamp module door. Never 
extract the lamp module while the 
lamp is operating.
The lamp hour counter in the Status menu counts the number of 
hours the lamp has been in use. After 3000 hours of use, the lamp 
monitor LED, marked   on the top of the projector near the 
keypad, lights yellow. For optimum results, the lamp should be 
replaced at this time. You can order new...