Epson Powerlite 73c Multimedia Projector Users Guide

							Fine-tuning the Projector45
Customizing Projector Features
You can use the Setting menu to disable the projector’s sleep mode, 
adjust the image shape, and customize several other features.
1. Press the 
Menu button. 
2. Use the directional buttons to highlight 
Setting. You see the 
features and their settings on the right side:
3. Press 
Enter to select the Setting menu. 
4. Use the directional buttons and 
Enter button to set the following 
options:
■Keystone
Adjusts a distorted image from a trapezoid shape to 
rectangular. 
■Auto Keystone
Automatically adjusts a distorted image from a trapezoid 
shape to rectangular when the projector’s feet are extended or 
retracted. (Not available when you’re projecting from the 
ceiling or using rear projection.)
■No-Signal Msg.
Selects the screen color and message to display when the 
projector is not receiving a signal. The logo setting displays an 
image that you have transferred to the projector. See page 43 
for instructions on transferring an image to use as the 
no-signal message.
+
-Auto KeystoneAuto Keystone
ResetResetExecuteExecute
KeystoneKeystone     0     0
No-Signal Msg.No-Signal Msg.OFFOFFLogoLogoPromptPromptONONOFFOFF
ONONOFFOFF
ONONOFFOFFColor Mode PromptColor Mode Prompt
BlackBlackBlueBlue
Sleep ModeSleep ModeONONOFFOFFA/V MuteA/V MuteLogoLogoBlackBlackBlueBlue
Video
Audio
Setting
Users Logo
Advanced
About
Reset All:
:
:
:
:
::
:
[Menu]: Exit[    ]: Enter [    ]: Select 
						

							46Fine-tuning the Projector
■Prompt
Turns off the identifying text that appears briefly when you 
switch from computer input to a video source.
■Color Mode Prompt
Turns off the identifying text that appears briefly when you 
switch color modes.
■A/V Mute
Selects the screen color or image to display when you press 
the 
A/V Mute button. The logo setting displays an image that 
you have transferred to the projector. See page 43 for 
instructions on transferring an image to use for the A/V Mute 
display.
■Sleep Mode
Enables or disables the power management system, which 
turns the lamp off when the projector has not received any 
input signals for 30 minutes. 
5. When you’re finished, press 
Esc or Menu.
Setting Advanced Features
You can use the Advanced menu to configure the projector for rear 
projection or ceiling mounting, and adjust several other features.
1. Press the 
Menu button. 
2. Use the directional buttons to highlight 
Advanced. You see the 
features and their settings on the right side:
COM PortRS-232CUSB:
Brightness ControlHighLow:Video
Audio
Setting
Users Logo
Advanced
About
Reset All
Startup Screen
Color Adjustment
Color Temp.RGB
Rear Proj .
LanguageSelect[English]
ResetExecute
AdjustONOFF
ONOFF: :
:
CeilingONOFF:
[Men[Menu]: Exit[    ]: Enter [    ]: Select 
						

							Fine-tuning the Projector47
3. Press Enter to select the Advanced menu. 
4. Use the directional buttons and 
Enter button to set the following 
options:
■Language
Select from nine languages to be used for the projector 
menus.
■Brightness Control
Select a Low lamp brightness setting when you need to 
reduce fan noise for your presentation. When you select Low, 
the projector starts up using High brightness for two minutes, 
then switches to Low.
■Startup Screen
Turn on to display the image or logo you have captured 
whenever the projector starts. See page 43 for more 
information.
■Color Adjustment
Color Temp:
 Adjusts the whiteness of the screen.
RGB: Adjusts the individual RGB values.
■Rear Proj.
Turn on to project from behind a transparent screen.
■Ceiling
Turn on when the projector is mounted upside-down from 
the ceiling.
■COM Port
Turn on USB when you’re controlling the projector from a 
computer with the EMP Link 21L software. This software 
can be downloaded from the EPSON website at 
support.epson.com. (You must turn the projector off and 
then on again to use the new setting.)
5. When you’re finished, press 
Esc or Menu.
note
The USB and remote control 
mouse features do not work 
when COM Port is set to 
USB. 
						

							48Fine-tuning the Projector
Viewing Lamp Usage and Other 
Information
Use the About menu to view information about the display settings of 
your computer and the number of hours the lamp has been used.
1. Press the 
Menu button. You see the main menu.
2. Use the 
Enter button to select About.
You see the lamp usage hours and computer display settings on 
the right:
The life span of the lamp is about 1500 hours. If the number 
shown is close to 1500, make sure you have a spare lamp handy.
3. When you’re finished, press 
Esc or Menu.
note
If you access the About
menu when the projector 
display is set to video, you 
only see the lamp life, video 
source, and video signal 
settings.
note
The lamp usage timer doesn’t 
register until you’ve used the 
lamp for at least 10 hours.
VideoVideoAudioAudioSettingSettingUsers LogoUsers LogoAdvancedAdvancedAboutAboutReset AllReset All
Frequency Video Source
V ---.--Hz Reset Lamp Timer
H ---.--kHz Lamp0H
SYNC Mode SYNC Polarity
------V ------ H ------
Resolution
Refresh Rate0.0 Hz 0x    0 Computer
Input Signal
: : :
: :
:
: :RGB
Execute
[    ]: Select[    ]: Enter[Menu]: Exit 
						

							Fine-tuning the Projector49
Restoring the Default Settings
The Reset All option lets you return all 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.
Execute
Video
Audio
Setting
Users Logo
Advanced
About
Reset All
[    ]: Execute[Menu]: Exit[    ]: Selectnote
The Input Signal, Video 
Signal, User’s Logo, Lamp, 
and Language settings do not 
return to their defaults when 
you select Reset All.
 
  
						

							50Fine-tuning the Projector 
						

							Maintaining and Transporting the Projector51
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 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. Refer 
all other servicing to 
qualified service 
personnel. 
						

							52Maintaining 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 Projector53
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. 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. 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. 
						

							54Maintaining 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.