Epson Projector Emp 7850 User Manual

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Problem Solving Problem SolvingEMP-7850 User’s Guide
When the Indicators Provide No Help
First refer to the following problems to determine what type of problem it is that you are having, and then refer to the page containing details of the problem.
No images appear   p.101
Projection does not start, the projection area is completely black, the 
projection area is completely blue, etc.
Projection stops automatically   p.101
The message Not Supported. is displayed.   p.102
The message No Signal. is displayed.   p.102
Images are fuzzy or out of focus.   p.103
Interference or distortion appear in images.   p.103
Problems such as interference, distortion or black & white checked 
patterns appear.
Image is truncated (large) or small   p.104
Only part of the image is displayed.
Image colours are not right   p.105
The whole image appears purplish or greenish, images are black & 
white, colours appear dull, etc.
(Computer monitors and LCD screens have different colour 
reproduction performance, so that the colours projected by the 
projector and the colours appearing on the monitor may not 
necessarily match, but this is not a sign of a problem.)
Images appear dark   p.106
Problems relating to images
No sound can be heard or the 
sound is faint   p.106
The remote control does not work 
 p.107
Mail notification messages are not 
being sent when a problem occurs 
with the projector.   p.107
The projector cannot be monitored 
and controlled using the EMP 
Monitor function.   p.108
You cannot connect from another computer when images are 
being projected during a network connection   p.109
EMP NS Connection starts, but a projector is not found 
 p.110
Connection cannot be established in Access point mode or 
wired LAN connection mode   p.111
Connection cannot be made in Ad hoc mode p.112
Network Screen images are not displayed, or the display is 
slow  p.112
PowerPoint slideshows will not play back in Network Screen 
 p.112
Network Screen cannot be used   p.113
Files do not work correctly with EMP SlideMaker2.   p.113
An error message is displayed   p.114Other problemsProblems relating to networks and EasyMP 
						

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Problem Solving Problem SolvingEMP-7850 User’s Guide
 No images appear
 Projection stops automatically
Problems relating to images
Check
Remedy
Was the [Power] button pressed?
Press the [Power] button on either the remote control or the projectors control panel to turn the 
power on.
The remote control cannot be used unless the [R/C] switch of the remote control is at ON. 
 p.36
Is the A/V Mute function active?
Press the [A/V Mute] button on either the remote control or the projectors control panel to cancel 
the A/V Mute function.   p.62
Has No-Signal Msg. been set to OFF?
If the No-Signal Msg. menu command has been set to OFF, set it to Black or Blue for 
messages to be displayed. If a message is displayed, refer to the item indicated.    Setting - No-
Signal Msg. p.84
Have the configuration menu settings been 
made correctly?
Reset all of the settings.   p.91
Is the projected image completely black?
Some input images, such as screen savers, may be completely black.
Are the image signal format settings correct?
If a composite video
 or S-Video
 source is connected to the projector, use the Video Signal 
menu command to select the signal format.   Video - Video Signal p.80
Check
Remedy
Is Sleep Mode set to ON?
When the Sleep Mode menu command has been set to ON, the lamp turns off automatically if 
no operations are carried out for about 30 minutes while no video signal is being input. The   
indicator lights orange at this time. Press the [Power] button on either the remote control or the 
projectors control panel to turn the power on. If you do not want sleep mode to be used, change the 
Sleep Mode setting to OFF.   Setting - Sleep Mode p.84
Only when projecting computer imagesOnly when projecting images 
from a video source 
						

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Problem Solving Problem SolvingEMP-7850 User’s Guide
 The message Not Supported. is displayed.
 The message No Signal. is displayed.
Check
Remedy
Are the image signal format settings correct?
If the signal from the video source which is connected to the [BNC] ports of the projector is being 
projected, use the BNC Input menu command to select the signal format which matches the 
connected signal source.   Setting - BNC Input p.84
If a composite video
 or S-Video
 source is connected to the projector, use the Video Signal 
menu command to select the signal format.   Video - Video Signal p.80
Does the mode match the frequency and 
resolution of the image signals?
Use the Frequency menu command to check the signals being input.
 About - Frequency p.90
Check the frequency and resolution of the computer.
   Computer documentation
Check
Remedy
Are the cables connected correctly?
Check that all of the cables required for projection are securely connected.   p.19–p.30
Has the correct video input port been 
selected?
Press the [Source] button on either the remote control or the projectors control panel to change the 
image source.   p.37
Is the power for the computer or video source 
turned on?
Turn the power on for the devices.   p.36
Are the image signals being output to the 
projector?
If the image signals are only being output to the computers LCD monitor or to the accessory 
monitor, you need to change the output to an external destination as well as the computers own 
monitor. For some computer models, when the image signals are output externally, they no longer 
appear on the LCD monitor or accessory monitor. 
 Computer documentation, under a title such as External output or Connecting an external 
monitor
If the connection is made while the power is already turned on, the function [Fn] key that switches 
the computers video signal to external output may not work. Turn the power for the projector and 
the computer off and then back on again.   p.36, p.40
Only when projecting computer imagesOnly when projecting images from 
a laptop computer or computer 
with a built-in LCD screen 
						

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Problem Solving Problem SolvingEMP-7850 User’s Guide
 Images are fuzzy or out of focus.
 Interference or distor tion appears in images.
Check
Remedy
Has the focus been adjusted correctly?
Turn the focus ring on the projector to adjust the focus.   p.42
Is the lens cover still attached?
Remove the lens cover.   p.35
Is the projector at the correct distance?
The recommended projection distance range is 77–1113 cm. Set the projector up so that it is within 
this range.   p.15
Is the keystone adjustment value too large?
Decrease the projection angle to reduce the amount of keystone correction.   p.45
Has condensation formed on the lens?
If the projector is suddenly taken from a cold environment to a warm environment or if sudden 
ambient temperature changes occur, condensation may form on the surface of the lens, and this may 
cause the images to appear fuzzy. Set the projector up in the room approximately one hour before it 
is to be used. If condensation forms on the lens, turn the power off and wait for the condensation to 
disappear.
Check
Remedy
Are the image signal format settings correct?
If a video source is connected to the [BNC] ports of the projector, use the BNC Input menu 
command to select the signal format which matches the connected signal source.    Setting - 
BNC Input p.84
If a composite video
 or S-Video
 source is connected to the projector, use the Video Signal 
menu command to select the signal format.    Video - Video Signal p.80
Are the cables connected correctly?
Check that all of the cables required for projection are securely connected.   p.19–p.30
Is an extension cable being used?
If an extension cable is used, electrical interference may affect the signals. Use the accessory cables 
and check if this helps.
Has the correct resolution been selected?
Set the computer so that the signals that are output are compatible with this projector.    List of 
Supported Monitor Displays p.136
 Computer documentation
Have the Sync.
 and Tracking
 settings 
been adjusted correctly?
Press the [Auto] button on the remote control or the [Auto/Enter] button on the projectors control 
panel too carry out automatic adjustment. If the images have not been adjusted correctly after using 
automatic adjustment, you can make the adjustments using the Sync and Tracking  menus.
 p.54, p.55
Only when projecting computer imagesOnly when projecting computer images 
						

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Problem Solving Problem SolvingEMP-7850 User’s Guide
 Image is truncated (large) or small
Check
Remedy
Is the image in real display?
Is the aspect ratio setting correct?
Press the [Resize] button on either the remote control or the projectors control panel.   p.70
Is the image still being enlarged by the 
E-Zoom function?
Press the [ESC] button on the remote control to cancel the E-Zoom function.   p.63
Has the Position setting been adjusted 
correctly?
If analogue RGB computer signals are being input, press the [Auto] button on the remote control or 
the [Auto/Enter] button on the projectors control panel to automatically adjust the setting.
If the images have not been correctly adjusted after using the automatic setup function, adjust the 
setting manually using the Position menu command.
If signals other than analogue RGB computer signals are being input, adjust the setting manually 
using the Position menu command.    Video - Position p.76, p.79
Has the computer been set for dual display?
If dual display has been activated in the Display Properties of the computers Control Panel, the 
projector will only project about half of the image on the computer screen. To display the whole of 
the image on the computer screen, turn off the dual display setting. 
 Computer video driver documentation
Has the Resolution command been set 
correctly?
Set the Resolution menu command to match the computer.    Video - Resolution p.77
 Computer documentation
Only when projecting computer imagesOnly when projecting computer images 
						

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Problem Solving Problem SolvingEMP-7850 User’s Guide
 Image colours are not right
Check
Remedy
Do the input signal settings match the signals 
from the connected device?
If the BNC Input menu command has been set to YCbCr
 or YPbPr
 when a computer or 
RGB video source is connected to the [BNC] ports of the projector, the images will appear purplish.
If the BNC Input menu command has been set to Analog-RGB when a component video
 
signal source is connected to the [BNC] ports of the projector, the images will appear greenish.
Select the correct signal format for the connected source.   Setting - BNC Input p.84
If a composite video
 or S-Video
 source is connected to the projector, use the Video Signal 
menu command to select the video signal format.   Video - Video Signal p.80
Has the image brightness been adjusted 
correctly?
Use the Brightness menu command to adjust the brightness.   Video - Brightness p.76, p.79
Are the cables connected correctly?
Check that all of the cables required for projection are securely connected.   p.19–p.30
Has the image contrast
 been adjusted 
correctly?
Use the Contrast menu command to adjust the contrast.   Video - Contrast p.76, p.79
Has the colour been adjusted correctly?
Use the Color Adjustment menu command to adjust the colour.
Advanced1 - Color Adjustment   p.87
Has the Wall Shot function been set to Wall 
Shot ON?
When projecting onto a normal screen, press the [Wall Shot] button on either the remote control or 
the projectors control panel to change the setting to Wall Shot OFF. To re-adjust the Wall Shot 
setting, use Wall Shot Readjustment.   p.52
Have the colour intensity and tint been 
adjusted correctly?
Use the Color and Tint menu commands to adjust the colour and tint.   Video - Color, 
Tint p.79
Only when projecting images 
from a video source 
						

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Problem Solving Problem SolvingEMP-7850 User’s Guide
 Images appear dark
 No sound can be heard or the sound is faint
Check
Remedy
Have the image brightness and luminance 
been adjusted correctly?
Use the Brightness and Brightness Control menu commands to adjust the brightness and 
luminance.
 Video - Brightness p.76, p.79
 Advanced2 - Brightness Control p.89
Has the image contrast
 been adjusted 
correctly?
Use the Contrast menu command to adjust the contrast.   Video - Contrast p.76, p.79
Is the lamp due for replacement?
When the lamp is nearly due for replacement, the images will become darker and the colour quality 
will become poorer. When this happens, the lamp should be replaced with a new one.   p.121
Other problems
Check
Remedy
Is the audio source connected correctly?
Check that the cable is connected to the correct Audio port.   p.31
Has the volume been adjusted to the 
minimum setting?
Adjust the volume so that sound can be heard.   Audio - Volume p.57
Is an audio cable still connected to the 
projectors [Audio Out] port?
If a cable connector is inserted into the [Audio Out] port, sound is no longer output from the 
projectors built-in speaker.
If not using external speakers, disconnect the audio cable from the [Audio Out] port.
Is the A/V Mute function active?
Press the [A/V Mute] button on either the remote control or the projectors control panel to cancel 
the A/V Mute function.   p.62
Is the Computer/DVI Audio Input setting 
correct?
Change the Computer/DVI Audio Input setting in the Audio menu to match the images being 
projected, or set it to Computer/DVI.   p.81 
						

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Problem Solving Problem SolvingEMP-7850 User’s Guide
 The remote control does not work
 Mail notification messages are not being sent when a problem occurs with the projector.
Check
Remedy
Is the [R/C] switch at the ON position?
Set the [R/C] switch to the ON position.   p.36
Is the remote control light-emitting area 
facing towards the remote control light-
receiving area when it is operated?
Face the remote control towards the remote control light-receiving area.
The operating angle for the remote control is approximately ±30º horizontally and approximately 
±15º vertically.   p.13
Is the remote control too far from the 
projector?
The operating range for the remote control is approximately 10 m.   p.13
If operating the remote control from a distance or if you would like to ensure that remote control 
operations work properly, use the optional remote control cable kit.   p.129
Is direct sunlight or strong light from 
fluorescent lamps shining onto the remote 
control light-receiving area?
Set the projector up in a location where strong light will not shine onto the remote control light-
receiving area.
Are the batteries dead, or have the batteries 
been inserted correctly?
Insert new batteries, while making sure that they face correctly.   p.11
Does the remote controls ID number match 
the projectors ID number?
If the remote controls ID number is set to a number other than 0, the ID number must match the 
projectors ID number, otherwise the remote control will not work.   p.73
Is the remote control cable still connected to 
the [Remote] port of either the remote control 
or the projector?
If the remote control cable is still connected to the [Remote] port, the remote control light-receiving 
areas of the projector or the remote control light-emitting area of the remote control will not work. If 
not using the remote control cable kit, disconnect the remote control cable from the [Remote] port of 
either the remote control or the projector.
Problems relating to monitoring and controlling projectors using a network
Check
Remedy
Is the projector computer correctly connected 
to the network?
Check that the network cable is properly connected. If the cable is not connected, or is incorrectly 
connected, please connect it properly.   p.18
Are the settings for connecting to a network 
correct?
Check the Network advanced settings.   Connecting in Access Point Mode or Wired LAN 
Connection Mode in the EasyMP Setup Guide
Has Standby Mode been set to Network 
ON?
If using the mail notification function while the projector is in standby mode, change the Standby 
Mode menu setting to Network ON.   Advanced1 - Standby Mode p.88 
						

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Problem Solving Problem SolvingEMP-7850 User’s Guide
 The projector cannot be monitored and controlled using the EMP Monitor function.Has a critical problem developed causing the 
projector to momentarily stop working?
When the projector has momentarily stopped working, it cannot send e-mail messages. If the 
projector cannot be reset even after it has been checked, contact your dealer or the nearest address 
provided in the International Warranty Conditions section of the Safety Instructions/World-Wide 
Warranty Terms booklet.
Is power being supplied to the projector?
Check if the power supply to the location where the projector is set up has been interrupted, or if the 
circuit breaker for the electrical outlet that the projector is connected to has been tripped.
Check
Remedy
Is the projector computer correctly connected 
to the network?
Check that the network cable is properly connected. If the cable is not connected, or is incorrectly 
connected, please connect it properly.   p.18
Are the settings for connecting to a network 
correct ?
Check the Network advanced settings.   Connecting in Access Point Mode or Wired LAN 
Connection Mode in the EasyMP Setup Guide
Has EMP Monitor function been correctly 
installed to the computer?
Uninstall EMP Monitor and then re-install it.   Installing EasyMP Software and Uninstalling 
EasyMP Software in the EasyMP Setup Guide
Have all projectors that are to be monitored 
and controlled been registered in the 
projector list?
Register the projector in the projector list.   Monitoring and Control Using EMP Monitor in the 
EasyMP Operation Guide
Has Standby Mode been set to Network 
ON?
If using the EMP Monitor function while the projector is in standby mode, change the Standby 
Mode menu setting to Network ON.   Advanced1 - Standby Mode p.88
Is power being supplied to the projector?
Check if the power supply to the location where the projector is set up has been interrupted, or if the 
circuit breaker for the electrical outlet that the projector is connected to has been tripped.
Check
Remedy 
						

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Problem Solving Problem SolvingEMP-7850 User’s Guide
 You cannot connect from another computer when images are being projected during a network connection
Check
Remedy
Has the person making the presentation left 
the meeting room without closing the 
connection?
At the time of a network connection, if a different computer connects to the projector that is 
connecting with the computer, the connection with the current connected computer will be 
terminated and the next computer will be connected. 
If no projector keyword has been set in the projector or the keyword is known, it is possible to 
terminate the current connection and connect to the projector by establishing a new connection from 
the computer. 
If a projector keyword has been set in the projector and the projector keyword is unknown, terminate 
the connection from the projector and then reconnect. To terminate the connection from the 
projector, press the [ESC] button on the remote control, select the Exit button from the displayed 
menu and then press the [Enter] button on the remote control. Connect from the desired computer 
after terminating the connection. 
 Disconnecting from a Network Connection in the EasyMP Setup Guide