NEC Projector LT35 LT30 LT25 User Manual

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Setting Off Timer [Off Timer]
You can use the Off Timer feature to turn off the projector automatically at a preset time.
Eight preset times can be selected:Off, 0:30, 1:00, 2:00, 4:00, 8:00, 12:00 and 16:00.
Enabling or Disabling Auto Focus [Auto Focus]
This option turns on or off the Auto Focus feature. (→ page 22)
NOTE:
When the “Auto Focus” is on, the Auto Focus function works instantly under the following conditions:
•When you turn on the power.
•When you change the zoom.
•When you reposition the...

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5. Using On-Screen Menu
 Menu Descriptions & Functions [Information]
Displays the status of the current signal and lamp usage. This item has three pages. The information included is as
follows:
[Usage Time]
[Lamp Life Remaining] (%)*
[Lamp Hours Used] (H)
[Projector Hours Used] (H)
*The progress indicator shows the percentage of remaining bulb life.
The value informs you of the amount of lamp usage. When the remaining lamp time reaches 0, the Remaining
Lamp Time bar indicator changes from 0% to 100...

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5. Using On-Screen Menu
 Menu Descriptions & Functions [Reset]
Returning to Factory Default [Reset]
The Factory Default feature allows you to change adjustments and settings to the factory preset for a (all) source (s)
except the following:
[Current Signal]
Resets the adjustments for the current signal to the factory preset levels.
The items that can be reset are: [Preset], [Brightness], [Contrast], [Color], [Hue], [Sharpness], [Aspect Ratio],
[Horizontal Position], [Vertical Position], [Clock],...

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6. Maintenance
This section describes the simple maintenance procedures you should follow to clean the focus sensor, lens and
replace the lamp.

 Cleaning the Lens and Focus Sensor
Cleaning the lens
Use a blower or lens paper to clean the lens, and be careful not to scratch or mar the lens.
LAMP
STATUS
POWERSOURCE
AUTO ADJ.
FOCUS ON/STAND BYSELECT
Cleaning the focus sensor
Use a blower or lens paper to clean the focus sensor.
Keep finger prints off the focus sensor. Leaving finger prints in the focus...

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 Replacing the Lamp
After your lamp has been operating for 2000 hours (up to 2500 hours in Eco mode) or longer, the LAMP indicator in the
cabinet will blink red and the message [The lamp has reached the end of its usable life. Please replace the lamp.]
will appear. Even though the lamp may still be working, replace it at 2000 (up to 2500 hours in Eco mode) hours to
maintain optimal projector performance. After replacing the lamp, be sure to clear the lamp hour meter. (→ page 45)
CAUTION
•DO NOT TOUCH...

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3. Loosen the two screws securing the lamp housing until the phillips screwdriver goes into a freewheeling
condition. The two screws are not removable.
Remove the lamp housing by holding it.
6. Maintenance
NOTE: There is an interlock on this case to prevent the risk of electrical shock. Do not attempt to circumvent this interlock.
4. Push the part labeled “PUSH” and insert a new lamp housing until the lamp housing is plugged into the
socket.
CAUTION
Do not use a lamp other than the NEC replacement...

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6. Maintenance
7. Connect the supplied power cable and turn on the projector.
8. Finally, select the menu 
→ [Reset] → [Clear Lamp Hours] to reset the lamp usage hours.
NOTE: When the lamp exceeds 2100 hours (up to 2600 hours in Eco mode) of service, the projector cannot turn on and the menu is
not displayed.
If this happens, press the HELP button on the remote control for 10 seconds to reset the lamp clock back to zero.
When the lamp time clock is reset to zero, the LAMP indicator goes out. 

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7. Appendix

 Troubleshooting
This section helps you resolve problems you may encounter while setting up or using the projector.
Indicator Messages
Power Indicator
Indicator Condition
Projector Condition Note
Off
Blinking light
Steady lightGreen
Orange
Green
Orange0.5 sec On,
0.5 sec Off
2.5 sec On,
0.5 sec Off
0.5 sec On,
0.5 sec OffThe main power is off
The projector is getting ready to turn on.
Off Timer is enabled.
The projector is cooling down.
The projector is turned on.
The projector is in...

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7. Appendix
Common Problems & Solutions (→ Power/Status/Lamp Indicator on page 50.)
Does not turn on
Will turn off
No picture
Picture suddenly
becomes dark
Color tone or hue is
unusual
Image isn’t square to
the screen
Picture is blurred
Image is scrolling
vertically, horizontally
or both
Remote control does
not work
Indicator is lit or
blinking
Cross color in RGB
mode•Check that the power cable is plugged in and that the power button on the projector cabinet or the remote
control is on. (→ page 16,...

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7. Appendix
If there is no picture, or the picture is not displayed correctly.
•Power on process for the projector and the PC.
Be sure to connect the projector and notebook PC while the projector is in standby mode and before turning on
the power to the notebook PC.
In most cases the output signal from the notebook PC is not turned on unless connected to the projector before
being powered up.
NOTE: You can check the horizontal frequency of the current signal in the projector’s menu under Information....