Epson Projector Emp 7850 User Manual

							110
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 p.16
Is the access lamp of the wireless LAN card set 
into the projector lit yellow?
If the access lamp is off, remove the wireless LAN card and re-insert it. 
 Inserting and Removeing Cards p.16
If making a wireless LAN connection, is the 
projector in ad hoc mode connection stand by?
Is ESSID:xxx displayed on the Network Screen connection stand-by screen ?
If this message is not displayed, activate - ESSID ad hoc in the Easy Connect mode advanced 
settings screen.    Connecting Using Easy Connect Mode in the EasyMP Setup Guide
If making a wireless LAN connection, are the 
computer and projector set to the same ESSID?
Please set the projector to the same ESSID as the computer.
Please set the computer to the same ESSID as the projector. If there are no settings for ESSID in 
the communication settings utility of your wireless LAN, ESSID ad hoc cannot be used. In this 
case, please use Channel ad hoc.   Connecting Using Easy Connect Mode in the EasyMP 
Setup Guide
Is the Network Screen Network advanced 
settings screen displayed on the projector?
Network connection is disabled when a Network Screen advanced settings screen is displayed. 
Please return to the Network Screen connection stand-by screen.   Connecting Using Easy 
Connect Mode and Connecting in Access Point Mode or Wired LAN Connection Mode in the 
EasyMP Setup Guide
Is the computer ready for LAN card or in-built 
LAN functionality to be used?
Please check whether the LAN device is functioning in the Device Manager. For example, 
Control panel - System - Device Manager.
If making a wireless LAN connection, is the 
wireless LAN setting on the computer set to ad 
hoc mode?
Select ad hoc mode using the communication settings utility (client manager etc.) of the wireless 
LAN device installed in your computer. Some wireless LAN device manufacturers, may also refer 
to ad hoc as Wireless LAN Personal Computer Communication (Wi-Fi), Wi-Fi ad hoc, 
802.11 ad hoc, 802.11 Mode Connection, or Peer to Peer.
Has the LAN card you wish to use been 
selected in the EMP NS Connection Switch 
network screen?
If the computer you are using has multiple LAN environments, only those which can be selected 
from within EMP NS Connection can be used. Please select this LAN from the Extension - 
Switch LAN settings in EMP NS Connection.    Connecting Using Easy Connect Mode and 
Connecting in Access Point Mode or Wired LAN Connection Mode in the EasyMP Setup Guide
If making a wireless LAN connection, are there 
any settings within the power saving features of 
your computer which disable the wireless LAN?
Please enable the wireless LAN. 
						

							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 
setting to OFF.   Connecting in Access Point Mode or Wired LAN Connection Mode in the 
EasyMP Setup Guide
Check
Remedy
If in Access point mode, are the computer and 
projector set to the same ESSID?
Connection cannot be made unless the same ESSID is selected. Please set both the projector and 
computer to the same ESSID.    Connecting in Access Point Mode or Wired LAN Connection 
Mode in the EasyMP Setup Guide
Are the computer and projector set to the 
same WEP key?
Connection cannot be made unless the same WEP key has been set. Set the same WEP key on the 
projector and computer.    Connecting in Access Point Mode or Wired LAN Connection Mode 
in the EasyMP Setup Guide
Are the connection refusal functions of the 
access point, such as the MAC address and 
port restrictions, set correctly?
Please set the projector connection permissions on the access point.
Are the IP address of the computer and the 
projector, the subnet mask, and the gateway 
address set up correctly?
If not using DHCP, please ensure that the settings match on both the computer and the projector. 
 Connecting in Access Point Mode or Wired LAN Connection Mode in the EasyMP Setup 
Guide
Are the subnets of the computer and the 
projector different?
Please select Use IP connect mode in EMP NS Connection and connect using IP connect mode.
 What if the Projector You Want Does Not Appear? in the EasyMP Setup Guide 
						

							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 that 
newer computers only support ESSID ad hoc mode. If the communication settings utility of your 
wireless LAN has both options, please use ESSID ad hoc, wherever possible.
If using ESSID ad hoc, is there a Melco access 
point operating nearby?
Ad hoc connection is not possible if there is a Melco access point set to the same ESSID, operating 
nearby. Please turn off the power to the Melco access point or select an ESSID different to that 
access point.
Check
Remedy
Are you trying to watch a movie in the Media 
Player, or preview a screen saver?
Depending on the computer, the Media Player video area may not be displayed, or the screen saver 
preview may not be displayed correctly.
Are you connecting in Access point mode or 
Wired LAN connection mode?
When using Network Screen in Access point mode or Wired LAN connection mode, display speed 
falls compared to Easy connect mode.
Are you using WEP encryption, or connecting 
to multiple projectors?
Display speed falls when WEP encryption or two or more connections are being used.
Are you using DHCP when in Access point 
mode or Wired LAN connection mode?
If DHCP is set to ON in the Access point mode advanced settings screen or the Wired LAN 
connection mode advanced settings screen, and a connectable DHCP server is not found, it will take 
some time before the screen returns to the Network Screen connection stand-by screen.
Check
Remedy
Are you trying to start Network Screen when 
PowerPoint is running?
Please close the PowerPoint application before connecting with Network Screen. If you connect 
when PowerPoint is already running, you will not be able to project any slideshows. 
						

							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 PowerPoint 2000/2002, and then modifying it. 
 Files that Can be Included in Scenarios in the EasyMP Operation Guide
When PowerPoint files (.ppt) cannot be pasted 
into a scenario, or thumbnails cannot be 
displayed, has the Microsoft Office JPEG 
converter been installed?
Install the JPEG converter. For more information about Microsoft Office JPEG converter 
installation, refer to the documentation for the Microsoft Office. 
						

							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 EasyMP Setup Guide
Incorrect keyword. Enter the keyword 
displayed on the projector.
Check the projector keyword in the Connection stand-by screen of the projector, and enter that 
projector keyword.
Select a connecting projector from the list.
Select the name of each projector for the connection, and click the Connect button.
 Connecting Using Easy Connect Mode, and Connecting in Access Point Mode or Wired 
LAN Connection Mode in the EasyMP Setup Guide
The selected projector is in use. Continue to 
connect?
You are attempting to connect to a projector already connected to another computer. 
Click Yes to connect to the projector. The connection between the projector and the other 
computer will be terminated. 
Click No to end the connection attempt to the projector. The connection to the other computer will 
not be affected.
Failed to initialize EMP NS Connection.
Uninstall and then reinstall EMP NS Connection. 
 Uninstalling EasyMP Software and Installing EasyMP Software in the EasyMP Setup Guide
Communication error occurred. Do you want 
to retry connection?
A communication error has occurred between the computer and the projector and the connection has 
been terminated.
Click Yes to reconnect. 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 EasyMP Setup Guide
Click No to remain disconnected and close this message screen.
One of the projectors cannot be connected 
with the keyword entered.
The wrong keyword was entered when trying to connect to a projector with a projector keyword. 
Check the projector Connection stand-by screen for the correct projector keyword. Terminate the 
connection, reconnect and enter the projector keyword on the displayed keyword input screen.
 Connecting Using Easy Connect Mode and Connecting in Access Point Mode or Wireless 
LAN Connection Mode in the EasyMP Setup Guide 
						

							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 concerning the Network advanced settings,
 Connecting Using Easy Connect Mode and Connecting in Access Point Mode or Wireless 
LAN Connection Mode in the EasyMP Setup Guide
Some projectors do not support SXGA. 
Reduce resolution and retry.
One of the projectors you are connecting to is an EMP-735. Change the screen resolution of the 
computer to SXGA (1280 × 1024) or lower.
There is a projector not responding.
One or more projectors failed to connect when an attempt was made to connect simultaneously to 
multiple projectors. The successfully connected projectors can be used.
To connect to the projectors that failed to connect, terminate the connection and try again. 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 EasyMP Setup Guide
Enter the keyword displayed on the projector.
Check the projector keyword displayed on the connection stand-by screen of the projector and enter 
that projector keyword.
Cannot find a projector of the specified IP 
address.
Ensure that the Access point mode or Wired LAN connection mode setting is being used in the 
Network Screen Network advanced settings of the desired projector. Change to Access point mode 
or Wired LAN connection mode, if set to Easy connect mode. 
Next, check the IP address in the Access point mode advanced settings screen or Wired LAN 
connection mode advanced settings screen and specify this IP address when connecting in IP 
connection mode.   What if the projector you want does not appear? in the EasyMP Setup Guide
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 in Access Point Mode or Wired LAN Connection Mode in the EasyMP Setup 
Guide 
						

							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 projection 
screen, change the computer display settings to: XGA (1024 × 768) or lower.
Image transfer slows if screen color is more 
than 24 bits. NS Connection converts it to 16 
bits. Do you want to continue?
The display colours of the computer being connected to the projector is set to 24 bits or higher.
Clicking Yes connects the projector. However, the display will be in 16 bit colour..
Check
Remedy
** already registered.
(** is the scenario file name.)
It is not possible to add a scenario file name if it already exists in the Autorun Scenario List. 
 Sending a Scenario in the EasyMP Operation Guide
Not enough disk space.
The drive to which a scenario is being sent has insufficient free space and the scenario cannot be 
sent. Delete unneeded files on the destination drive to free sufficient disk space to save the scenario 
on the drive.
** contains an invalid path.
(** is the path name containing the scenario 
file.)
The path of the file to be opened could not be found. This could be for the following reasons.
 After the last time the scenario file was saved by EMP SlideMaker2, the file was moved to another 
folder.
 After the last time the scenario file was saved by EMP SlideMaker2, the folder name was changed.
 The desired scenario file has been deleted.
Open the desired scenario file by selecting File-Open, or search for the file using the Windows 
Search for Files or Folders function.
Disk full while accessing **.
(** is the path name including the scenario 
file)
The drive containing the scenario folder has insufficient free space, and could not save the scenario 
file. Delete unneeded files on the drive containing the scenario folder to free sufficient disk space 
allowing the scenario file to be saved.
Cannot open the proposed file.
The PowerPoint file to be added to the scenario is damaged or corrupted and cannot be used. Use a 
different PowerPoint file.
Change name or directory
A file or scenario folder of the same name already exists. Change the scenario name or the scenario 
folder name and try saving again. 
						

							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 advanced settings of the projector. Change to Access point mode or Wired 
LAN connection mode, if set to Easy connect mode. 
Next, check the IP address in the Access point mode advanced settings screen, or Wired LAN 
connection mode advanced settings screen and specify this IP address when connecting in IP 
connect mode.   What if the projector you want does not appear in the EasyMP Setup Guide
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 in Access Point Mode or 
Wired LAN Connection Mode in the EasyMP Setup Guide 
						

							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 Lens........................................................................................ 119
 Cleaning the Air Filters and Air Intake Vent .............................................. 119 Replacing Consumables....................................................120 Lamp Replacement Period .......................................................................... 120
 Replacing the Lamp .................................................................................... 121
 Resetting the Lamp Operating Time ........................................................... 124
 Replacing the Air Filters ............................................................................. 125
Saving a Users Logo ....................................... 126
Optional Accessories ....................................... 129
Glossary ............................................................ 130List of ESC/VP21 Commands........................... 133
 Command List .................................................................. 133
 Communication Protocol ................................................. 133
 Cable Layouts ................................................................... 134 Serial connection ........................................................................................ 134
 USB connection .......................................................................................... 134 USB Connection Setup ..................................................... 135
List of Supported Monitor Displays ................ 136
 Computer/RGB Video ................................................................................ 136
 Component Video ....................................................................................... 136
 Composite Video/S-Video .......................................................................... 136
Specifications .................................................... 137
Appearance........................................................ 139 
						

							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 projector case. Then wipe the case 
again with a soft, dry cloth.
Use a commercially-available air blower, or use lens cleaning paper to 
clean the lens.If the air filters become clogged with dust, or if the message The projector 
is overheated. Clean or replace the air filter and lower the room 
temperature. appears on the screen, clean the air filters and the air intake 
vent.
If the air filters become clogged with dust, it can cause overheating and 
damage the projector.
Air intake vents in rear, side and base of projectorCleaning the Projector Case
Cleaning the Lens
CAUTION
Be sure to read the separate Safety Instructions/World-Wide Warranty 
Terms before cleaning.
CAUTION
Do not use volatile substances such as wax, alcohol or thinner to 
clean the projector case. These can cause the case to warp and make 
the coating finish peel off.
CAUTION
Do not rub the lens with harsh materials or subject the lens to shocks, 
as it can easily become damaged.
Cleaning the Air Filters and Air Intake Vent
Turn the projector upside-down and use a 
vacuum cleaner to clean the air intake vent.