Epson Powerlite 7850p Multimedia Projector Users Guide

							Managing Projectors161
Connecting to a Projector in a Group
Follow these steps to connect to a projector in a group:
1. Start NS Connection. Then click the 
Extension button on the 
EMP NS Connection screen. You see this screen:
2. Select 
Use IP connect mode and Use Group List. 
3. From the Connection Group list, choose the group you want to 
connect to and click 
OK.
Select these 
two boxes 
						

							162Managing ProjectorsYou see this screen:
4. Click 
IP connection. (If the upper left button on the screen says 
IP connect mode rather than Automatic search mode, skip 
this step.)
You see this screen:
5. Select the projector you want to connect to and click 
Connect.
If this says IP 
connect 
mode, skip 
step 4.
Select the 
projector
Then click 
Connect 
						

							Managing Projectors163
6. If you want, repeat step 5 to connect to additional projectors.
The computer’s image appears on the projector screen.
Exporting a Projector Group
You can export group information as a file to another computer on 
the wireless network. This is useful, for example, if you want to share 
group access with multiple users.
1. Start NS Connection. Then click the 
Extension button on the 
EMP NS Connection screen. You see this screen:
note
You must export all of the 
groups in the Connection 
Group list. You can’t export 
individual groups. 
Even if a projector is 
registered in a group, you 
don’t have to use the group 
to connect to it. If your 
laptop is configured for your 
wireless network, you can 
connect to a projector as 
described on page 50.
Select these 
two boxes 
						

							164Managing Projectors2. Select 
Use IP connect mode and Use Group List. Then click 
the 
Advanced button. You see this screen.
3. Click 
Export to export a file for all groups in the Connection 
Group list.
4. Highlight the file name (
NSGroup.ini), and then select Save to. 
Choose a location on the second computer and click 
Save. 
To connect to the projector from the new computer, follow the steps 
beginning on page 161.
note
If you haven’t created any 
groups, the 
Export button 
will be grayed out. You must 
create at least one group 
before the 
Export button is 
active. 
						

							Managing Projectors165
Importing a Projector Group
You can also import group information as a file to another computer 
on the wireless network. 
1. Start NS Connection. Then click the 
Extension button on the 
EMP NS Connection screen. You see this screen:
2. Select 
Use IP connect mode and Use Group List. Then click 
the 
Advanced button. You see this screen.
3. Click 
Import.
Select these 
two boxes 
						

							166Managing Projectors4. On the next screen, select the file you want to import and click 
Open.
The names of all of the groups in the file are added to the 
Connection Group list on the Advanced screen.
To connect to the projector from the new computer, follow the steps 
beginning on page 161. 
						

							Maintaining the Projector167
1
Maintaining the Projector
Your projector needs little maintenance. All you have 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 filters at the side and base of 
the projector. A clogged air filter can block ventilation needed to cool 
the projector.
The only parts you should replace are the lamp and air filters (when 
you order a new lamp, replacement filters come with it). 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 the air filters and vents
■Replacing the lamp and air filters
■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 
cover. 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. 
						

							168Maintaining 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 tissue. 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 neutral detergent. Then wipe the case.
■Do not use wax, alcohol, benzene, thinner, or other chemical 
detergents. These can damage the case.
Remove the cap
before cleaning 
						

							Maintaining the Projector169
Cleaning the Air Filters and Vents
Clean the air filters and air intake vents after every 100 hours of use. If 
they are not cleaned periodically, they can become clogged with dust, 
preventing proper ventilation. This can cause overheating and damage 
the projector. 
Follow these steps:
1. Turn off the projector and unplug the power cord.
2. To clean the intake vents, EPSON recommends using a small 
vacuum cleaner designed for computers and other office 
equipment. If you don’t have one, gently clean the vents with a 
soft brush (such as an artist’s paintbrush).
3. Gently turn the projector over and remove the filters from the 
side and bottom of the projector. Then use a small vacuum 
cleaner or soft brush to clean the filters. Slide the filters back into 
place when you’re done.
note
To order replacement air 
filters without the lamp, 
request part number 
V13H134A01. See page 1
4 
for ordering information. 
						

							170Maintaining the Projector4. If the dirt is difficult to remove or a filter is broken, replace the 
filters as described on the next page. Contact your dealer or call 
EPSON at (800) 873-7766 in the United States to obtain new 
ones. In Canada, please call (800) 463-7766 for dealer referral.
Replacing the Lamp and Air Filters
The life span of the projection lamp is about 2000 hours if 
Brightness Control in the Advanced 2 menu is set to High (default), 
and 3000 hours if 
Brightness Control is set to Low. It is time to 
replace the lamp when: 
■The projected image gets darker or starts to deteriorate.
■The message LAMP REPLACE appears on the screen when the 
lamp comes on and the lamp warning light   flashes orange. To 
maintain projector brightness and image quality, replace the lamp 
as soon as possible. 
■The lamp warning light   flashes red (the lamp is burnt out).
Contact your dealer or call EPSON at (800) 873-7766 in the United 
States for a replacement lamp. Request part number V13H010L22. In 
Canada, please call (800) 463-7766 for dealer referral.
Follow these steps to replace the lamp and air filters:
1. Turn off the projector.
2. When the power light stops flashing, unplug the power cord.
3. Let the projector cool for at least half an hour (if it has been on). 
The lamp is extremely hot immediately after use. 
note
When you get a replacement 
lamp for your projector, new 
air filters are included. You 
should replace the filters 
when you replace the lamp.
To order replacement air 
filters without the lamp, 
request part number 
V13H134A01.
To check how long the lamp 
has been in use, see 
page 173.
warning
Let the lamp cool fully 
before replacing it. 
In the unlikely event that 
the lamp has broken, small 
glass fragments may be 
present and should be 
removed carefully to avoid 
injury.