NEC Lt240 Portable Projector Users Manual

E-111
USING ON-SCREEN MENU 
 Menu Descriptions & Functions
Security
The Security function enables you to protect your projector so that the
projector will not project a signal unless you enter a keyword. There is also
an option to lock the projector by using a registered PC card as a protect
key. Once you have registered your PC card as a protect key, you are
required to insert the registered PC card into the PC card slot of the pro-
jector each time you turn on the projector. You can enable the...

E-112
USING ON-SCREEN MENU 
 Menu Descriptions & Functions
To set up a keyword to enable the Security function without using a regis-
tered PC card
1. Use the SELECT 
 button to select “Keyword” and use the software
keyboard to enter a keyword.
NOTE: Please make a note of your keyword.
2. Use the SELECT 
 button to select “Enable” and use the SELECT

 button to select “OK”, then the Security function will be enabled. An
“Are you sure?” message will appear. Use the SELECT  button and
press the ENTER...

E-113
USING ON-SCREEN MENU 
 Menu Descriptions & Functions
To turn on the projector when Security is enabled (when using your key-
word only)
1. Press and hold the POWER button for a minimum of two seconds.
The projector will be turned on and display a message to the effect that
the projector is security-protected.
2. Select [Projector Options] → [Security] from the menu and press the EN-
TER button.
The Release Code input screen will be displayed.
3. Enter your keyword in the Release Code input screen....

E-114
USING ON-SCREEN MENU 
 Menu Descriptions & Functions
If youve lost your registered PC card, proceed as follows:
NOTE: NEC or your dealer will provide you with your Release Code in ex-
change for your registered keyword and Request Code. See more information
at the end of this section.
1. Press and hold the POWER button for a minimum of two seconds.
The projector will be turned on and display a message to the effect that
the projector is security-protected.
2. Select [Projector Options] → [Security]...

E-115
USING ON-SCREEN MENU 
 Menu Descriptions & Functions
Tools
Provides tools for setting sleep timer, capturing images, displaying files or
changing your background logo in a PC Card and drawing.
NOTE: The Capture and PC Card Files features are required for a PC card.
Using Sleep Timer
1. Select your desired time between 30 minutes and 16 hours: Off, 0:30, 1:00,
2:00, 4:00, 8:00, 12:00, 16:00.
2. Select “Set” and press the ENTER button on the remote control.
3. The remaining time starts counting...

E-116
USING ON-SCREEN MENU 
 Menu Descriptions & Functions
[Page 1]
Source Name
Input Terminal
Entry No.
Horizontal Frequency
Vertical Frequency
Sync Polarity[Page 2]
Signal Type
Video Type
Sync Type
Interlace[Page 3]
Remaining Lamp Time (%)
Lamp Hour Meter (H)
Projector Usage (H) Changing Background Logo:
You can change the default background logo using the PC Card Files
feature.
NOTE: File size must be 256KB or less. Other file formats than JPEG and
BMP are not available. See page E-59.
Using...

E-117
NOTE: The progress indicator shows the percentage of remaining bulb life. The
value informs you of the amount of lamp and projector usage respectively.
Remaining Lamp Time Display:
When the remaining lamp time reaches 0, the Remaining Lamp Time
bar indicator changes from 0% to 100 Hours and starts counting down.
If the remaining lamp time reaches 0 hours, the projector will not turn
on regardless of whether the lamp mode is set to Normal or Eco.
Returning to Factory Default
The Factory Default...

E-118
MAINTENANCE
This section describes the simple maintenance procedures you should
follow to replace the lamp, and to clean the cabinet and the lens.
Replacing the Lamp
After your lamp has been operating for 1500 hours (up to 2000 hours : Eco
mode) or longer, the Lamp indicator in the cabinet will blink red and the
message will appear. Even though the lamp may still be working, replace
it at 1500 hours (up to 2000 hours : Eco mode) to maintain optimal projec-
tor performance.
CAUTION
•DO NOT TOUCH THE...

E-119
MAINTENANCE
Interlock
To replace the lamp:
1. Loosen the lamp cover screw until the screwdriver goes into a freewheel-
ing condition and remove the lamp cover. The lamp cover screw is not
removable.
2. Loosen the two screws securing the lamp housing until the screwdriver
goes into a freewheeling condition. The two screws are not removable.
3. Remove the lamp housing by pulling out the handle.
NOTE: There is an interlock on this case to prevent the risk of electrical shock.
Do not attempt to...

E-120
MAINTENANCE
4. 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 lamp (LT60LP).
5. Secure it in place with the two screws.
Be sure to tighten the screws.
6. Reattach the lamp cover.
7. Tighten the lamp cover screw.
Be sure to tighten the screw.