InFocus Projector Lp500 User Manual

45
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...

46
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...

47
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...

48
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....

49
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....

50
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...

51
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....

52
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...

53
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...

54
Maintenance & Troubleshooting