NEC NP43 User Manual page 93

Common Problems & Solutions (→ "Power/Status/Lamp Indicator" on page 83.)
Problem Check These Items
Does not turn on • Check that the power cable is plugged in and that the power button on the projector cabinet or the remote control is
• Ensure that the lamp cover is installed correctly. (→ page 81)
• Ensure that the two screws on the lamp housing are completely tightened.(→ page 81)
• Ensure that the cooling pump is installed correctly. (→ page 82)
• Check to see if the projector has overheated. If there is insufficient ventilation around the projector or if the room
• Check to see if you continue to use the projector for another 100 hours after the lamp has reached the end of its life.
After replacing the lamp, reset the lamp hours used. (→ page 77)
• The lamp may fail to light. Wait a full minute and then turn on the power again.
• Set [FAN MODE] to [HIGH ALTITUDE] when using the projector at altitudes approximately 5000 feet/1500 meters
Also when the lamp is turned off, the projector internal temperature is hot. If the power is turned on before the pro-
Will turn off • Ensure that the [OFF TIMER] or [AUTO POWER OFF] is off. (→ page 72, 73)
• Check if the projector has stayed with its lens cover closed for more than 2 hours. (→ page 5)
No picture • Use the appropriate source button on the remote control to select your source. (→ page 18) If there is still no pic-
• Ensure your cables are connected properly.
• Use menus to adjust the contrast and brightness. (→ page 59)
• Check to see if the image is muted. (→ page 30)
• Ensure that the lens cover is open. (→ page 5)
• Reset the settings or adjustments to factory preset levels using the [RESET] in the Menu. (→ page 77)
• Enter your registered keyword if the SECURITY function is enabled. (→ page 33)
• Be sure to connect the projector and notebook PC while the projector is in standby mode and before turning on the
In most cases the output signal from the notebook PC is not turned on unless connected to the projector before be-
• See also the next page.
Picture suddenly be- • When one of the following happens, the [ECO MODE] automatically changes from [OFF] to [ON].
comes dark
Image isn't square to the • Reposition the projector to improve its angle to the screen. (→ page 20, 21)
screen • Use the KEYSTONE correction function to correct the trapezoid distortion. (→ page 25)
Picture is blurred • Make sure that focus is appropriate.
• Reposition the projector to improve its angle to the screen. (→ page 20, 21)
• Ensure that the distance between the projector and screen is within the adjustment range of the lens. (→ page 10)
• Make sure that the distance between the focus sensor and the screen is within the effective range of the AUTO FO-
• Make sure that the requirements for the AUTO FOCUS are met. (→ page 22)
• Condensation may form on the lens if the projector is cold, brought into a warm place and is then turned on. Should
Flicker appears on screen • Set [FAN MODE] to other than [HIGH ALTITUDE] mode when using the projector at altitudes approximately 5000
Image is scrolling verti- • Use the appropriate source button on the remote control to select your source. (→ page 18)
cally, horizontally or both • Adjust the computer image manually with the [HORIZONTAL] and [VERTICAL] in [ADJUST] → [IMAGE OPTIONS] in
Remote control does not • Install new batteries. (→ page 8)
work • Make sure there are no obstacles between you and the projector.
• Stand within 22 feet (7 m) of the projector. (→ page 8)
Indicator is lit or blinking • See the POWER/STATUS/LAMP Indicator. (→ page 83)
Cross color in RGB mode • Press the AUTO ADJ. button on the remote control (◀ button on the projector cabinet)� (→ page 27)
• Adjust the computer image manually with [CLOCK] and [PHASE] in [ADJUST] → [IMAGE OPTIONS] in the menu. (→
Cannot control the pro- • Check if [STANDBY MODE] is not set to [POWER-SAVING].
jector in standby mode
from the PC Control�
The projector does not • Turn off the power and unplug the power cable. Wait for 5 minutes. Plug the power cable and turn on the power
operate correctly�
For more information contact your dealer.
on� (→ page 15, 16)
where you are presenting is particularly warm, move the projector to a cooler location�
If so, replace the lamp�
or higher. Using the projector at altitudes approximately 5000 feet/1500 meters or higher without setting to [HIGH
ALTITUDE] can cause the projector to overheat and the projector could shut down. If this happens, wait a couple
minutes and turn on the projector� (→ page 71)
jector has cooled down, the fan will run a short time before the lamp will turn on�
ture, press the button again�
power to the notebook PC.
ing powered up�
* If the screen goes blank while using your remote control, it may be the result of the computer's screen-saver or
power management software�
* When there are no signals (blue or black screen) → To return to the [OFF] mode, select another available source.
* When the room where you're presenting is particularly warm → Move the projector to a cooler location�
CUS� (→ page 22)
this happen, let the projector stand until there is no condensation on the lens�
feet/1500 meters or lower. Using the projector at altitudes less than approximately 5000 feet/1500 meters and setting
to [HIGH ALTITUDE] can cause the lamp to overcool, causing the image to flicker. Switch [FAN MODE] to [AUTO].
( → page 71)
the menu� (→ page 61)
page 60)
again�
84
8. Appendix