Epson Projector Emp 7900 User Manual

							120
Problem Solving
 The projector cannot be monitored and controlled using the EMP Monitor function
 No sound can be heard or the sound is faint
Check
Remedy
Is the projector computer correctly connected 
to the network?
Connect the network cable correctly.   p.95
Has the projector been set up correctly for 
connection to the network?
Check the settings for the Network menu command.
Advanced2 - Network   p.96
Has EMP Monitor function been correctly 
installed to the computer?
Uninstall EMP Monitor and then re-install it.   p.94, p.95
Have all projectors that are to be monitored 
and controlled been registered in the 
projector list?
Register the projector in the projector list.   p.102
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.86
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.
Other problems
Check
Remedy
Is the audio source connected correctly?
Check that the cable is connected to the correct [Audio] port.   p.26
Has the volume been adjusted to the 
minimum setting?
Adjust the volume so that sound can be heard.
Audio - Volume   p.52
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.58
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.78 
						

							121
Problem Solving
 The remote control does not work
 The fans do not stop when power is turned off 
Check
Remedy
Is the [R/C] switch at the ON position?
Set the [R/C] switch to the ON position.   p.31
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.14
Is the remote control too far from the 
projector?
The operating range for the remote control is approximately 10 m.   p.14
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.134
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.12
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.69
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.
Check
Remedy
Is the Standby Mode configuration menu set 
to Network ON?
If the menu is set to Network ON, the fans will continue to operate after the cool-down period has 
finished. 
Advanced1 - Standby Mode   p.86  
						

							AppendicesThis chapter provides information on maintenance procedures to ensure the best level of performance for the 
projector for a long time.Maintenance ...................................................... 123
 Cleaning ............................................................................. 123 Cleaning the Projector Case..................................................... 123
 Cleaning the Lens .................................................................... 123
 Cleaning the Air Filters and Air Intake Vent ........................... 123 Replacing Consumables ....................................................124 Lamp Replacement Period....................................................... 124
 Replacing the Lamp ................................................................. 125
 Resetting the Lamp Operating Time........................................ 128
 Replacing the Air Filters.......................................................... 129
Saving a Users Logo ....................................... 131
Optional Accessories and Consumables ....... 134
 Optional Accessories ............................................................... 134
 Consumables ............................................................................ 135
Glossary ............................................................ 136List of ESC/VP21 Commands........................... 139
 Command List .................................................................. 139
 Communication Protocol ................................................. 139
 Cable Layouts ................................................................... 140 Serial connection ......................................................................140
 USB connection........................................................................140 USB Connection Setup ..................................................... 141
List of Supported Monitor Displays ................ 142
 Computer/RGB Video ..............................................................142
 Component Video .....................................................................142
 Composite Video/S-Video ........................................................142
Specifications .................................................... 143
Appearance........................................................ 145
Index ................................................................... 146 
						

							123
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 dust collects on the air filter or the air outlet, it can cause the internal 
temperature of the projector to rise, and this can lead to problems with 
operation and shortening of the optical engines service life.
It is recommended that you clean these parts at least once every three 
months. Clean them more often than this if using the projector in 
particularly dusty environments.
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. 
						

							124
Maintenance
Air filters at side and base of projector
Pull the air filters out from the projector and then use a vacuum cleaner to 
clean them.
Replacing Consumables
This section describes how to replace the lamp and the air filters.
It is time to replace the lamp when:
The message Lamp Replace. appears on the screen when 
projection star ts.The   indicator is flashing orange
The projected images get darker or start to deteriorate in quality.
TIP
 If the air filters are broken or if the warning message reappears after 
they have been cleaned, they should be replaced. Replace them with 
new air filters. See Appendices: Optional Accessories and 
Consumables  p.135
 Spare lamps are provided with spare air filters. The air filters should 
also be replaced when the lamp is replaced.
Lamp Replacement Period
A message will be displayed.Flashes orange 
						

							125
Maintenance
PROCEDURE
Turn the projectors power off, wait for the cool-down 
period to end, and then disconnect the power cable.
The cool-down period lasts for about 20 seconds.
TIP
 The lamp replacement message is set to appear after the following 
periods of time in order to maintain the initial brightness and quality 
of the projected images.
·When used continuously at high luminance: Approx. 1900 hours
·When used continuously at low luminance: Approx. 2900 hours
Brightness Control   p.87
If you continue to use the lamp after this period, the possibility of the 
lamp breaking becomes greater.  When the lamp replacement 
message appears, replace the lamp with a new one as soon as 
possible, even if it is still working.
 Depending on the characteristics of the lamp and on the way it has 
been used, the lamp may become darker or stop working before the 
lamp warning message appears. You should always have a spare 
lamp ready in case it is needed.
 Contact your dealer for a spare lamp.
Replacing the Lamp
CAUTION
 If you are replacing the lamp because it has stopped working, it is 
possible that the lamp is broken.
If replacing the lamp of a projector which has been installed on the 
ceiling, you should always assume that the lamp is broken and 
handle it with extreme care during removal. Furthermore, you 
should stand to the side of the projector, not underneath it.
 Wait until the lamp has cooled down sufficiently before removing the 
lamp cover. It takes a further one hour after the cool-down
gperiod 
has finished for the lamp to be cool enough.
1 
						

							126
Maintenance
Wait until the lamp has cooled down, and then 
remove the lamp cover from the base of the projector.
It takes a further one hour after the cool-down period has 
finished for the lamp to be cool enough.
Insert the screwdriver that is supplied with the spare lamp or 
some other flat-tipped screwdriver into the hollow between the 
projector and the lamp cover, and turn it. The lock will be 
released. Slide the screwdriver in until the   mark on the lamp 
cover and the   mark on the projector are aligned. Then lift up 
the lamp cover to remove it.
Loosen the two lamp fixing screws.
Use the screwdriver that is supplied with the spare lamp or 
some other flat-tipped screwdriver to loosen the two lamp 
fixing screws that are securing the lamp to the projector.
2
1
2
3 
						

							127
Maintenance
Take out the old lamp.
Fold out the handle as shown in the illustration below and pull 
the lamp out of the projector.
If the lamp is broken, replace it with a new lamp, or contact 
your local dealer for further advice. If replacing the lamp 
yourself, be careful to avoid pieces of broken glass.
Install the new lamp.
Hold the lamp so that it faces the correct way to fit into the 
projector, and then insert the lamp until it clicks into place and 
tighten the two lamp fixing screws.Install the lamp cover.
Slide the cover in until it clicks into place.
4
11
2
56 
						

							128
Maintenance
The projector has a built-in counter which keeps track of the lamp 
operating time, so that when the cumulative operating time reaches a 
certain point, it causes the replacement warning message to be displayed. 
Therefore, the counter needs to be reset using the configuration menu after 
the lamp has been replaced with a new one.PROCEDURE
Connect the power cable, turn on the projectors 
power, and then press the [Menu] button on the 
remote control.
The configuration menu will be displayed.
TIP
 Install the lamp securely. If the lamp cover is removed, the lamp 
turns of automatically as a safety precaution. Moreover, the lamp will 
not turn on if the lamp or the lamp cover is not installed correctly.
 Spare lamps are provided with spare air filters. The air filters should 
also be replaced when the lamp is replaced.   p.129
 The lamp contains mercury. Dispose of used lamps properly in 
accordance with your local regulations.
Resetting the Lamp Operating Time
TIP
Do not reset the lamp operating time except after the lamp has been 
replaced. If the lamp operating time is reset at any other time, the 
lamp replacement period will not be indicated correctly.1
Remote control 
						

							129
Maintenance
Select Reset Lamp Timer from the About menu 
and then press the [Enter] button on the remote 
control or the [Auto/Enter] button on the projectors 
control panel.Select Yes and then press the [Enter] button on the 
remote control or the [Auto/Enter] button on the 
projectors control panel.
The lamp operating time will then be reset.
If the air filters are broken or if the warning message reappears after they 
have been cleaned, they should be replaced.
The air filter can be replaced even if the projector is installed on a ceiling.PROCEDURE
Turn the projectors power off, wait for the cool-down
gperiod to end, and then disconnect the power 
cable.
The cool-down period lasts for about 20 seconds.
2
Frequency Source
V ---.--Hz Reset Lamp Timer
H ---.--kHz (Low Brightness)0H
SYNC Mode SYNC Polarity
------H ------
Resolution
Refresh Rate0.0 Hz 0x   0 Computer
Input SignalAuto
Execute:
Lamp (High Brightness) 0H
:
:
:
: :
:
V ------
:
: :
: :
3
Reset Lamp Timer
Execute?
YES
NO
Reset Lamp Timer
Execute?
YES
NO
Replacing the Air Filters1