InFocus Projector Lp425zb User Manual

24
Using the Projector
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, then click either mouse button to turn this 
feature on and off.
Default Source
Default Source toggles between Computer and Video. This deter-
mines which source the projector checks first for active video 
during power-up. Highlight Default Source and click either 
mouse button to toggle between the options.
Auto...

25
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 information on contacting InFocus. Click either mouse 
button to turn this feature off and display a plain black or blue 
screen instead of the startup screen. 
Language Menu
FIGURE 17
Language menu
You can display the on-screen menus in English, French, German, 
Spanish,...

26
Using the Projector
F
IGURE 18
Status menu
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. Change the bulb when the brightness is no longer accept-
able. See “Replacing the Projection Lamp” on page 27 for details.
Computer resolution 
Shows your computer ’s resolution setting. To change this, go to 
your computer ’s Control Panel and adjust the resolution in the 
Display tab. See your computer ’s...

27
MAINTENANCE & TROUBLESHOOTING
This section describes how to:
clean the lens
replace the projection lamp 
use the security 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.
Abrasive cleaners, solvents or other harsh chemicals might 
scratch the lens.
2Lightly wipe the cleaning cloth over the lens.
3If you don’t intend to use the...

28
Maintenance & Troubleshooting
F
IGURE 19
Removing the lamp door
CAUTION: Never operate the
projector with the lamp door open
or removed. This disrupts the air
flow and causes the projector to
overheat.
5Loosen the two non-removable screws on the outside of the 
module.
FIGURE 20
Loosening the screws on the lamp module 

29
6Slide the lamp connector to the right to disconnect it from the 
projector (Figure 21).
FIGURE 21
Sliding the lamp connector
7Remove the module (Figure 22) and dispose of it in an envi-
ronmentally proper manner.
WARNING: Do not drop the 
lamp module or touch the glass 
bulb! The glass may shatter and 
cause injury.
F
IGURE 22
Removing the lamp module 

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Maintenance & Troubleshooting
8Align the new lamp module in the correct direction.
9Gently push the module in as far as it goes.
10Tighten the screws on the outside of the module. 
11Slide the lamp connector to the left to re-attach it.
12Insert the tabs at the top of the lamp door into the projector 
and press the lamp door into place.
13Plug in the power cord and turn the projector back on.
14To reset the lamp hour counter in the Status window, press 
and hold the left mouse button, then press the...

31
Troubleshooting
Problem: Nothing on projection screen
Make sure that the power cord is properly connected to a fully 
functional AC electrical outlet. Make sure that the power cord 
is also properly connected to the projector.
If the projector is plugged into a power strip, make sure the 
power strip is turned on.
Make sure you have removed the lens cap on the projection 
lens at the front of the projector.
Make sure the projector is switched on.
Check the projector ’s lamp to ensure that it is...

32
Maintenance & Troubleshooting

You might need to turn everything off and power up the 
equipment again in the proper order. Refer to your com-
puter ’s documentation to determine the correct order.
Make sure your laptop’s external video port is turned on. See 
the “Portable and Laptop Activation Chart” on page 39 or 
your computer ’s manual for details.
Make sure your computer ’s video board is installed and con-
figured correctly.
If you’re using Windows 3.x:
1In the Windows Program Manager,...

33
Problem: Image is out of focus
Turn the projection lens to focus the image.
Make sure the projection screen is at least 5 feet (1.5 m) from 
the projector.
Check the projection lens to see if it needs cleaning.
Problem: Image and menus are reversed left to right
Rear projection mode is probably turned on. Turn Rear Projec-
tion off in the Controls menu. The image should immediately 
return to forward projection. See “Rear Projection” on 
page 24.
Problem: the projector displays vertical lines,...