NEC Projector HT510/HT410 User Manual

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3. Type in a combination of the four SELECT 
 buttons and press the ENTER button.
NOTE: A keyword must be four to 10 digits in length.
The [Confirm Keyword] screen will be displayed.
4Type in the same combination of SELECT 

 buttons and press the ENTER button.
The confirmation screen will be displayed.
5. Select “Yes” and press the ENTER button.
The Security function has been enabled.
5. USING ON-SCREEN MENU 

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To disable the Security function:
1.Select [Advanced] → [Security] and press the ENTER button.
The Off/On menu will be displayed.
2. Select “Off” and press the ENTER button.
The Keyword confirmation screen will be displayed.
3. Type in your keyword and press the ENTER button.
When the correct keyword is entered, the Security function will be disabled.
When the Security function is enabled and the projector is turned on, the projector will display a blue back-
ground.
To display an image at this...

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NOTE:
•The security disable mode is maintained until the main power is turned off (by setting the main power switch to “O” or
unplugging the power cable).
•If you forget your keyword, contact your dealer. Your dealer will provide you with your keyword in exchange for your
request code. Your request code is displayed in the Keyword Confirmation screen. In this example “K992-45L8-JNGJ-
4XU9-1YAT-EEA2” is a request code.
Disabling the Cabinet Buttons [Cabinet Button]
This option turns on or off the Key...

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Information
Displays the status of the current signal and lamp usage. This item has three pages. The information included is
as follows:
[Page 1]
Remaining Lamp Time (%)*
Lamp Hour Meter (H)
Projector Usage (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 in-
dicator changes from 0% to 100 Hours and
starts counting down.
If the remaining lamp time reaches 0...

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Reset
Returning to Factory Default [Factory Default]
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.
All the items in “Picture”, “Adjustment (except “Wall Color”)” and “Image (except “Keystone” and “Keystone
Save”)” can be reset.
[All Data]
Reset all the adjustments and settings for all the signals to the factory...

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6. MAINTENANCE
6. MAINTENANCE
This section describes the simple maintenance procedures you should follow to replace the lamp and clean the
projector cabinet.
Replacing the LampAfter your lamp has been operating for 2000 hours (up to 3000 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 3000 hours in...

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6. MAINTENANCE
LENS SHIFTUPSELECT
LAMP
STATUS
POWER
ON/STAND BY
AUTO
ADJ.SOURCEL
E
N
S
 S
H
IF
TUPS
E
L
E
C
T
LAMP
STATUS
POWER
ON/STAND BY
A
U
T
O
A
D
J
.SOURCE
2. Loosen the two screws securing the lamp housing until the screwdriver goes into a freewheeling condition.
The two screws are not removable.
Remove the lamp housing by holding it.
NOTE: There is an interlock on this case to prevent the risk of electrical shock. Do not attempt to circumvent this interlock.
Interlock
LE
N
S
 SH
IFTUPS
E
L...

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SELECT
L
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S
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A
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/S
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 B
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 B
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ADJ.S
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E
4. Reattach the lamp cover.
Tighten the lamp cover screw.
Be sure to tighten the screw.
5. After you install a new lamp, select the menu 
→ [Reset] → [Clear Lamp Hour Meter] to reset the lamp usage
hours.
NOTE: When the lamp exceeds 2100 hours (up to 3100 hours in Eco mode) of service, the projector cannot turn on and the
menu is not displayed. If...

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Cleaning the Cabinet and the Lens
1. Turn off the projector before cleaning.
2. Clean the cabinet periodically with a damp cloth. If heavily soiled, use a mild detergent. Never use strong
detergents or solvents such as alcohol or thinner.
3. Use a blower or lens paper to clean the lens, and be careful not to scratch or mar the lens.
C
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 IN C
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 IN
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LAMP
STA
TUS...

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7. TROUBLESHOOTING
This section helps you resolve problems you may encounter while setting up or using the projector.
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 Standby.–
Wait for a moment.
–...