Epson Projector Emp 7850 User Manual

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Problem Solving Problem SolvingEMP-7850 User’s Guide
 EMP NS Connection starts, but a projector is not found
Check
Remedy
Is a LAN card set in the card slot of the 
projector?
Insert a LAN card into the card slot of the projector and check that the Network Screen connection 
stand-by screen is displayed.
If a LAN card is inserted but the Network Screen connection stand-by screen is not displayed, 
please remove the wireless LAN card and re-insert it into the card slot. 
 Inserting and Removeing Cards...

111
Problem Solving Problem SolvingEMP-7850 User’s Guide
 Connection cannot be established in Access point mode or wired LAN connection mode
Check
Remedy
Is the wireless LAN you are using Wi-Fi 
compliant?
Only Wi-Fi 802.11b compliant equipment can be used. You cannot use equipment conforming to 
any other Wi-Fi standards (802.11, 802.11a, 802.11g, etc.). 
Web site http://www.epson.co.uk
Is WEP encryption set to on?
You cannot connect in ad hoc mode unless WEP is set to OFF. Please set the WEP encryption...

112
Problem Solving Problem SolvingEMP-7850 User’s Guide
 Connection cannot be made in Ad hoc mode
 Network Screen images are not displayed or the speed is slow
 PowerPoint slideshows will not play back in Network Screen
Check
Remedy
Is the correct type of ad hoc mode (channel 
ad hoc, ad hoc or ESSID ad hoc) selected?
If you are trying to use an old type of computer to make a connection in Ad hoc mode, there are 
some instances where only Channel ad hoc can be used. Conversely, it is becoming the case...

113
Problem Solving Problem SolvingEMP-7850 User’s Guide
 Network Screen cannot be used
 Files do not work correctly with EMP SlideMaker2
Check
Remedy
Are you using a personal firewall?
Network Screen may be unusable when a personal firewall is set up.
Check
Remedy
Are you trying to use a PowerPoint (.ppt) file  
created in the PowerPoint 95/98 format?
Files created using PowerPoint 95/98 or files saved in PowerPoint 95/98 format cannot be edited 
using the EMP SlideMaker2. Use after saving once in...

114
Problem Solving Problem SolvingEMP-7850 User’s Guide
 Error messages from EMP NS Connection
An error message is displayed.
Check
Remedy
Failed to connect to a projector.
Try to re-establish a connection. If connection is still not possible, check the LAN on the computer 
and the Network Screen Network advanced settings on the projector.
For details concerning the Network advanced settings, 
 Connecting Using Easy Connect Mode and Connecting in Access Point Mode or Wired LAN 
Connection Mode in the...

115
Problem Solving Problem SolvingEMP-7850 User’s Guide
Check
Remedy
Failed to obtain network adaptor information. 
Check network settings and restart.
Check the following:
 Is a network adapter installed in the computer ?
 Is the driver for the network adapter installed in the computer ?
After checking, restart the computer and try to connect. 
If connection is still not possible, check the LAN on the computer and the Network Screen Network 
advanced settings on the projector.
 
For details...

116
Problem Solving Problem SolvingEMP-7850 User’s Guide
 Error messages from EMP SlideMaker2
Check
Remedy
Image transfer slows if PC resolution is higher 
than XGA (1024 × 768 pxl.) Do you want to 
continue?
The display of the computer being connected to the projector is set to resolution higher than XGA 
(1024 × 768).
Clicking Yes connects the projector. However, the display speed of the projection screen will be 
slow.
Clicking No aborts the projector connection. To avoid slow display speeds on the...

117
Problem Solving Problem SolvingEMP-7850 User’s Guide
 Error messages from EMP Monitor
Check
Remedy
The password is incorrect.
An incorrect password was entered. Enter the correct password. If you have forgotten the password, 
check the Password for WEB control in the Network Screen Network advanced settings on the 
projector.
Cannot connect to the projector of the IP 
address entered.
Ensure that the Access point mode or Wired LAN connection mode setting is being used in the 
Network Screen Network...

AppendicesThis chapter provides information on maintenance procedures to ensure the best level of performance for the 
projector for a long time.Maintenance ...................................................... 119
 Cleaning ............................................................................. 119 Cleaning the Projector Case ........................................................................ 119
 Cleaning the...

119 EMP-7850 User’s Guide
MaintenanceThis section describes maintenance tasks such as cleaning the projector and 
replacing consumable parts.Cleaning
You should clean the projector if it becomes dirty or if the quality of 
projected images starts to deteriorate.
Clean the projector case by wiping it gently with a soft cloth.
If the projector is particularly dirty, moisten the cloth with water 
containing a small amount of neutral detergent, and then firmly wring the 
cloth dry before using it to wipe the...