Epson Powerlite 74c Multimedia Projector Users Guide

							Fine-tuning the Projector61
If the password is not correct, you see the message “Wrong password. 
Please try again.” If you enter an incorrect password three times in 
succession, you see the message “The projector’s operation will be 
locked. Request code xxxxx” and the projector switches to standby 
mode for approximately 5 minutes. Write down the request code. 
Then disconnect the projector’s power cord from the electrical outlet, 
reconnect it, and turn the projector back on. 
When you see the Password Protect Release screen again, you can try 
to enter the correct password.
If you have forgotten the password, contact EPSON with the request 
code number that appears in the Password Protect Release screen for 
assistance. See “Where To Get Help” on page 83.
If you enter an incorrect password nine times in succession, the 
projector remains locked and you must contact EPSON to unlock it. 
Restoring the Default Settings
The Reset All option lets you return the projector settings to their 
default values.
Select 
Reset All and press the Enter button on the remote control to 
display the confirmation screen. Select 
Yes to reset all the default 
settings or 
No to cancel.
note
The Input Signal, Video 
Signal, User’s Logo, Lamp 
Hours, and Language settings 
do not return to their defaults 
when you select Reset All. 
						

							62Fine-tuning the Projector 
						

							Maintaining and Transporting the Projector63
1
Maintaining and 
Transporting the Projector
Your projector needs little maintenance. All you need to do on a 
regular basis is keep the lens clean. Any dirt or smears on the lens may 
show up on your projected image. 
You also need to periodically clean the air filter on the bottom of the 
projector. A clogged air filter can block ventilation needed to cool the 
projector and cause overheating. 
The only parts you should replace are the lamp and air filter. If any 
other part needs replacing, contact your dealer or a qualified servicer. 
This chapter covers the following:
■Cleaning the lens
■Cleaning the projector case
■Cleaning and replacing the air filter
■Replacing the lamp
■Resetting the lamp timer
■Transporting the projector
warning
Before you clean any part of 
the projector, turn it off and 
unplug the power cord. Never 
open any cover on the 
projector, except the lamp an
d 
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. Refer all other 
servicing to qualified service 
personnel. 
						

							64Maintaining and Transporting the Projector
Cleaning the Lens
Clean the lens whenever you notice dirt or dust on the surface. 
■Use a canister of compressed air to remove dust. 
■To remove dirt or smears on the lens, use lens-cleaning paper. If 
necessary, moisten a soft cloth with lens cleaner and gently wipe 
the lens surface.
Cleaning the Projector Case 
Before you clean the case, first turn off the projector and unplug the 
power cord. 
■To remove dirt or dust, wipe the case with a soft, dry, lint-free 
cloth. 
■To remove stubborn dirt or stains, moisten a soft cloth with water 
and a mild detergent. Then wipe the case. 
■Do not use wax, alcohol, benzene, paint thinner, or other 
chemical detergents. These can damage the case.
caution
Do not use glass cleaner 
to clean the lens. 
						

							Maintaining and Transporting the Projector65
Cleaning and Replacing the Air Filter 
Clean the air filter on 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. When the filter is clogged, the projector 
displays the message “The projector is overheated.”
To clean the air filter, follow these steps:
1. Turn off the projector, allow it to cool down, and unplug the 
power cord.
2. Turn the projector upside-down, as shown below.
3. To clean the filter, EPSON recommends using a small vacuum 
cleaner designed for computers and other office equipment. If you 
don’t have one, gently clean the filter using a very soft brush (such 
as an artist’s camel-hair brush).
If the dirt is difficult to remove or if the filter is torn, replace it. 
Contact your dealer or call EPSON at (800) 873-7766 to obtain a 
new one. The air filter set (part number V13H134A05) contains 
five filters. In Canada, please call (800) 463-7766 to locate a 
dealer. 
note
When you get a replacement 
lamp for your projector, a 
new air filter is included. 
You should replace the filter 
when you replace the lamp. 
						

							66Maintaining and Transporting the Projector 4. If you need to replace the filter, lift the tab on the filter cover and 
pull it upward to remove it.
5. Remove the filter.
6. Install the new filter as shown below.
7. Replace the filter cover by inserting the tabs and then pressing 
down the other end until it clicks into place. 
						

							Maintaining and Transporting the Projector67
Replacing the Lamp 
The projection lamp typically lasts for about 2000 hours of use 
(in High brightness mode) or 3000 hours (in Low brightness mode). 
It is time to replace the lamp when: 
■The projected image gets darker or starts to deteriorate.
■The   warning light is flashing red at 0.5-second intervals. 
■The message Lamp Replace appears on the screen when the 
lamp comes on. To maintain projector brightness and image 
quality, replace the lamp as soon as possible.
Contact your dealer or call EPSON at (800) 873-7766 in the United 
States for a replacement lamp. Request part number 
V13H010L27.
In Canada, please call (800) 463-7766 to locate a dealer. 
Follow these steps to replace the lamp:
1. Turn off the projector.
2. When the power light stops flashing and remains orange, unplug 
the power cord.
3. If the projector has been on, allow it to cool down for at least half 
an hour (or until the lamp is cool). 
4. Turn the projector upside-down to access the lamp compartment.
5. Use the screwdriver included with the replacement lamp to slide 
the edge of the lamp cover towards the side of the projector. Then 
lift off the cover.
note
You can check to see how 
many hours the lamp has 
been used. See page 55.
warning
Let the lamp cool before 
replacing it. If the lamp 
breaks, handle the shards 
carefully to avoid injury.
1
2 
						

							68Maintaining and Transporting the Projector 6. Use the screwdriver to loosen the two screws holding the lamp in 
place. The screws are deep inside the projector on the sides of the 
lamp. (You can’t remove the screws.) 
7. Hold the lamp by the top, as shown, and pull it straight out. 
8. Gently insert the new lamp as shown below.
9. Once the lamp is fully inserted, tighten its screws.
Don’t remove these screws
warning
This product includes a lamp 
component that contains 
mercury. Please consult your 
state and local regulations 
regarding disposal or 
recycling. Do not put it in th
e
trash.
caution
Do not touch the glass 
portion of the lamp assembly. 
Touching the glass could 
result in premature lamp 
failure. 
						

							Maintaining and Transporting the Projector69
10. Position the lamp cover so the arrows on the lamp cover align 
with the arrows on the projector. Then slide in the cover until it 
clicks into place.
11. Reset the lamp timer as described below.
Resetting the Lamp Timer
You must reset the lamp timer after replacing the lamp to clear the 
Lamp Replace warning message. Follow these steps:
1. Connect the power cable and turn on the projector.
2. Press the 
Menu button on the remote control and select the Info 
menu. Then press 
Enter. You see the following:
1
2
note
Do not reset the lamp timer if 
you have not replaced the 
lamp. If you do, the Lamp 
Hours will not accurately 
reflect the number of hours 
that the lamp has been used. 
						

							70Maintaining and Transporting the Projector 3. Press 
Enter to select the Lamp-Hours Reset option. You see the 
following:
4. Select 
Yes and press Enter.
5. Press 
Esc to return to the main menu or the Menu button to exit 
the menu system. 
Transporting the Projector
The projector contains many glass and precision parts. If you need to 
transport it, please follow these packing guidelines to prevent damage 
to the projector: 
■When shipping the projector for repairs, use the original 
packaging material if possible. If you do not have the original 
packaging, use equivalent materials, placing plenty of cushioning 
around the projector.
■When transporting the projector as freight or checked luggage, 
first put it in the supplied carrying case, then pack it in a firm box, 
using cushioning around the case. 
■When you are hand-carrying the projector, be sure to use the 
supplied carrying case.
note
EPSON shall not be liable 
for any damages incurred 
during transportation.