Epson Powerlite 7500c Multimedia Projector Users Guide

109
5Maintenance
Y
our projector needs little maintenance. You should, however, do 
the following:

Clean the lens so dirt or smears do not appear on the screen. 

Clean the projector case when needed.

Periodically clean the air filter at the bottom of the projector. A 
clogged air filter can block ventilation needed to cool the 
projector and keep it from overheating. 

Replace the lamp and air filter as needed. (If any other part 
needs replacing, contact your dealer or a qualified service...

5    Maintenance             110

When transporting the projector, take appropriate precaution to 
avoid damaging the delicate internal components.
✦
Warning: Before you clean any part of the projector, turn off the 
projector and unplug the power cord. Never open any cover on the 
projector, except the lamp and filter covers. Dangerous electrical 
voltages in the projector can injure you severely. Do not try to 
service this product yourself, except as specifically explained in this 
User’s Guide....

Cleaning the Air Filter
111
Cleaning the Air Filter 
Clean the air filter at the bottom of the projector after every 100 
hours of use. If it is not cleaned periodically, it can become clogged 
with dust, preventing proper ventilation. This can cause overheating 
and damage the projector. To clean the air filter, follow these steps:
1. Turn off the projector and unplug the power cord from the 
electrical outlet.
2. Place the projector on its side with the handle at the top so that 
the filter is easily...

5    Maintenance             112
4. The air filter is attached to the inside of the filter cover. It is 
recommended that you use a small vacuum cleaner designed for 
computers and other office equipment to clean the filter. If you 
don’t have one, use a dry, lint-free cloth. 
If the dirt is difficult to remove or if the filter is torn, replace the 
air filter. 
Note: An air filter comes with each replacement lamp. Contact 
your dealer or call EPSON Accessories at (800) 873-7766 in 
the U.S. to obtain a...

Replacing the Lamp
113
✦
Warning: Let the lamp cool before replacing it. Also, do not touch 
the glass portion of the lamp assembly; this can cause premature 
lamp failure.
1. Turn off the projector and unplug the power cord from the 
electrical outlet and the projector. Wait at least 20 minutes for 
the bulb to cool.
2. Place the projector on its side with the handle at the top so you 
can easily access the lamp cover.
Note: Placing the projector in this position keeps dust from 
getting inside the...

5    Maintenance             114
4. Use a screwdriver, coin, or similar object to loosen the two 
screws holding the lamp assembly in position. (You cannot 
remove these screws.) 
✦
Caution: Do not touch the glass portion of the lamp assembly; 
this can cause premature lamp failure.
5. Lift up the handle and pull out the lamp assembly.
6. Gently insert the new lamp assembly by lowering it into 
position. Make sure it’s inserted securely. Tighten the screws on 
the new lamp assembly.
7. Replace the lamp...

Transporting the Projector
115
Transporting the Projector
The projector contains many glass parts and precision parts. If you 
need to transport it, please follow these packing guidelines to 
prevent damaging the projector: 
When shipping the projector for repairs, place plenty of 
cushioning around the projector.

When transporting the projector for business use, first put the 
projector in a hard-shell carrying case (such as the optional 
EPSON case), then pack it in a firm box, using cushioning...

5    Maintenance             116
5500.book  Page 116  Wednesday, August 4, 1999  4:41 PM 

117
6Troubleshooting
T
his chapter describes the problems indicated by the projector’s 
lights and tells you how to solve problems with the projector. It is 
divided into the following sections:

“Using the Online Help Menu” on page 118 describes how to 
use the projector’s online help for image and sound problems.

“Problems with the Projector” on page 119 tells you what to do 
if any of the projector’s warning lights come on.

“Problems with the Remote Control” on page 122 tells you what 
to do if...

6    Troubleshooting             118

“Problems with the Image or Sound” on page 123 describes 
what to do if you cannot project an image, if the screen image is 
not good, or if there is no sound.
If you have a problem, check the appropriate section and follow all 
suggestions that apply to your problem. If none of the suggestions 
solve the problem, call your dealer or contact EPSON as described 
on page 8.
Using the Online Help Menu
The online Help menu provides useful information that can resolve...