InFocus LP500 Projector User Manual

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MAINTENANCE & TROUBLESHOOTING
This section describes how to:
clean the lens
replace the projection lamp 
clean the projection lamp filter screens
replace the batteries in the remote
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, and don’t 
apply the cleaner directly to the lens.
Abrasive cleaners, solvents or other harsh chemicals might 
scratch the lens.
2Lightly wipe the cleaning cloth over the lens in a circular 
motion.
3If you don’t intend to use the projector immediately, replace 
the lens cap.
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 
projector is operating.
The lamp hour counter in the Status menu counts the number of 
hours the lamp has been in use. After 1,980 hours of use, the mes-
sage “Change Lamp” temporarily appears on the screen when 
the projector is turned on. Change the lamp within the next 20 
hours. After 2,000 hours, the lamp will not light. You can order 
new lamp modules from your InFocus dealer. See “Accessories” 
on page 56 for information.
Follow these steps to replace the projection lamp:
1Turn off the projector and unplug the power cord. 
2Wait 30 minutes to allow the projector to cool thoroughly. 
						

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Maintenance & Troubleshooting
3Invert the projector on a soft flat surface, then push the ridge 
on the lamp door toward the back (Figure 33). The arrow on 
the lamp door should point to the unlock icon on the bottom 
of the projector. Lift the door up.
WARNING: Be extremely careful
when removing the lamp module.
In the unlikely event that the bulb
ruptures, small glass fragments
may be generated. The lamp
module is designed to contain
these fragments, but use caution
when removing the lamp module.
F
IGURE 33
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.
4Loosen the two non-removable screws on the outside of the 
module (Figure 34).
FIGURE 34
Loosening the screws on the lamp module 
						

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5Lift and grasp the metal bail wire and lift the module out (Fig-
ure 35). Dispose of the lamp module in an environmentally 
proper manner.
FIGURE 35
Removing the lamp module
WARNING: Do not drop the 
lamp module or touch the glass 
bulb! The glass may shatter and 
cause injury.
6Install the new lamp module, being sure to align the connec-
tors properly.
7Push the module in until it is flush with the bottom case of the 
projector.
8Tighten the screws on the outside of the module. 
9Replace the lamp door by inserting the hooks on the lamp 
door into the slots on the projector and pressing the lamp 
door into place. The arrow on the lamp door should point to 
the lock icon on the bottom of the projector. If the lamp door 
does not fit properly or bulges out, remove the door and re-
seat the lamp module.
10Plug in the power cord and press the green 
power button to 
turn the projector back on.
11To reset the lamp hour counter in the Status window, press 
and hold the 
volume - button, then press the source button 
(while still holding down the 
volume - button) for 5 seconds. 
Verify that the counter was reset by viewing the counter in the 
Status window. 
						

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Maintenance & Troubleshooting
Cleaning the Projection Lamp Filter Screens
In dirty or dusty environments, the dust filter screens on the 
lamp module can become clogged, causing high temperatures 
inside the lamp module. These high temperatures can cause pre-
mature lamp failure. Routine maintenance to remove dust and 
dirt from the screens lowers the lamp operating temperature and 
prolongs lamp life. To maximize lamp life you may want to clean 
the screen every 250 hours.
1Remove the lamp module. Refer to “Replacing the Projection 
Lamp” on page 45 for instructions.
2Examine the dust filter screens on each side of the lamp mod-
ule. If necessary, use compressed or canned air to clean the 
screens. Then use a cotton swab dipped in isopropyl alcohol 
to lightly wipe each screen. After youve wiped each screen, 
use the compressed or canned air to blow away remaining 
contaminants.
FIGURE 36
Lamp module screens
3Before you replace the lamp, use the compressed or canned 
air to clean the lamp housing in the projector.
4Replace the lamp and lamp door.
screen
screen 
						

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Replacing the Batteries in the Remote Control
The life of the batteries depends on how often and how long you 
use the remote. Symptoms of low battery charge include erratic 
responses when using the remote and a reduced range of opera-
tion.
Follow these steps to replace the batteries:
1Turn the remote face down in your hand.
2Push the tab on the battery door toward the top of the remote 
and lift the door off.
3Remove the old batteries and dispose of them in an environ-
mentally proper manner.
4Install two new AAA alkaline batteries. Make sure you install 
each in the correct direction.
5Insert the hooks on the battery door into the remote and press 
the tab to re-install the door.
Using the Security Lock 
The projector has a security connector for use with a PC Guard-
ian Cable Lock System (Figure 37). See “Optional Accessories” on 
page 56 for ordering information. Refer to the information that 
came with the lock for instructions on how to use it to secure the 
projector.
FIGURE 37
Installing the security lock 
						

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Maintenance & Troubleshooting
Tr o u b l e s h o o t i n g
Problem: The projector is not running
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 the projector is turned on.
Problem: Projector is running, but nothing appears on projec-
tion screen
Make sure you have removed the lens cap on the projection 
lens at the front of the projector.
Check the projector’s lamp to ensure that it is securely con-
nected in the lamp module. Make sure the lamp door is 
installed. Make sure the lamp has not been in use for over 
2,000 hours. The lamp automatically shuts off at 2,000 hours. 
See “Replacing the Projection Lamp” on page 45. A series of 
three fast blinking red LEDs indicates a lamp or fan failure.
Problem: Only the start-up screen displays
Verify that the cables are connected correctly. See page 9 
through page 10 for connection procedures.
Make sure that the cables do not have any bent pins.
Verify that the proper input source is connected. See “Source 
(keypad only) or Data and Video (remote only)” on page 22.
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 58 or 
your computer’s manual for details.
Make sure your computer’s video board is installed and con-
figured correctly. 
						

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If you’re using Windows 98:
1Open “My Computer” icon, the Control Panel folder and 
then the Display icon.
2Click the Settings tab.
3Verify that the Desktop area is set to 1280x1024 or less.
Problem: Color or text not being projected
You might need to adjust the brightness up or down until the 
text is visible. Refer to “Brightness” on page 26 for more infor-
mation.
Problem: The screen resolution is not right
Make sure the computer’s video card is set for a resolution of 
no greater than 1280x1024. 
Problem: Image isn’t centered on the screen
Move the projector to reposition the image.
Reposition the image using the menu. Refer to “Horizontal 
Position” on page 31 and “Vertical Position” on page 31.
Be sure the projector is at a 90 degree angle to the screen.
Problem: Image is too wide or narrow for screen
Adjust the zoom or projector placement.
Adjust the resolution of your video card if it’s greater than 
1280x1024.
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 Project” on page 34. 
						

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Maintenance & Troubleshooting
Problem: the projector displays vertical lines, “bleeding” or 
spots
Adjust the brightness. See “Brightness” on page 26.
Check the projection lens to see if it needs cleaning.
Problem: no sound
Adjust volume.
Turn off “mute” in the menu. See page 28.
Verify audio/input connections.
Adjust audio source.
Problem: Image is “noisy” or streaked
Try these steps in this order.
1Deactivate the screen saver on your computer.
2Turn 
Auto Image off and then back on again. See “Auto 
Image” on page 30. 
3Turn 
Auto Image off and adjust the synchronization and track-
ing manually to find an optimal setting. See “Manual Sync” 
on page 30 and “Manual Tracking” on page 30.
The problem could be with your computer’s video card. If 
possible, connect a different computer.
Problem: Projected colors don’t match the computer or video 
player’s colors
Just as there are differences in the displays of different moni-
tors, there are often differences between the computer image 
and the projected image. Adjust the brightness, tint and/or 
contrast from the Display menu. See “Brightness” on page 26, 
“Tint” on page 27 and “Contrast” on page 27. 
Problem: Lamp seems to be getting dimmer
The lamp begins to lose brightness when it has been in use for 
a long time. Replace the lamp as described in “Replacing the 
Projection Lamp” on page 45. 
						

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Problem: Lamp shuts off
A minor power surge may cause the lamp to shut off. Unplug 
the projector, wait at least a minute, then plug it back in.
Make sure the vents are not blocked.
Make sure the lamp has not been in use for over 2000 hours. 
The lamp automatically shuts off after 2000 hours. 
The most current troubleshooting information can be found in 
the Service and Support section of our website at 
http://www.infocus.com/service. You’ll also find a Technical 
Library, FAQs, and support contacts including a technical sup-
port e-mail form.
Before calling your dealer or InFocus Technical Support for assis-
tance, please have the following information available:
the projector’s serial number (located on the bottom label)
the resolution of your computer.
Call InFocus Technical Support at 
1-800-799-9911 between 6 a.m. 
and 6 p.m. PST, Monday through Friday. Service is available in 
North America after hours and on weekends for a fee at 
1-888-592-6800.
In Europe, call InFocus in The Netherlands at 
(31) 35-6474010 
between 8 a.m. and 6 p.m. Central European Time.
In Asia, call 
(65) 353-9449 between 9 a.m. and 6 p.m. 
Or, send us an e-mail at 
[email protected] 
						

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Maintenance & Troubleshooting