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...

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....

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...

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...

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...

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...