NEC PA1004UL-B User Manual page 218

Common Problems & Solutions
(→ "Indicator Message" on page 191.)
Problem
Does not turn on or shut
down
Will turn off
No picture
Picture suddenly becomes
dark
Check These Items
• Check that the power cord is plugged in and that the power button on the projector cabinet or the
remote control is on. (→ pages 17, 20)
• Check to see if the projector has temperature error, If projector inside temperature is too hot or cool,
it disabled to turn on the projector as the protection. Wait for a moment and try turn on the projector
again.
• Set [FAN MODE] to [HIGH ALTITUDE] when using the projector at altitudes approximately 5500
feet/1700 meters or higher. Using the projector at altitudes approximately 5500 feet/1700 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 127)
If you turn on the projector immediately after the light module is turned off, the fans run without
displaying an image for some time and then the projector will display the image. Wait for a moment.
• In case it's hard to think the trouble is not caused on the above mentioned conditions, unplug the
power cord from the outlet. Then wait 5 minutes before plugging it in again. (→ page 37)
• Ensure that the [OFF TIMER], [AUTO POWER OFF] or [PROGRAM TIMER] is off. (→ page 133, 154)
• Check if the appropriate input is selected. (→ page 23) If there is still no picture, press the INPUT
button or one of the input buttons again.
• Ensure your cables are connected properly.
• Use menus to adjust the brightness and contrast. (→ page 100)
• Is the [POWER ON SHUTTER] in the on-screen menu set to [CLOSE]?
• Check that the SHUTTER (lens shutter) or AV-MUTE (image off) buttons are not pressed.
• Reset the settings or adjustments to factory preset levels using the [RESET] in the Menu. (→ page
155)
• Enter your registered keyword if the Security function is enabled. (→ page 50)
• If the HDMI input or the DisplayPort signal cannot be displayed, try the following.
- Reinstall your driver for the graphics card built in your computer, or use the updated driver.
For reinstalling or updating your driver, refer to the user guide accompanied with your computer or
graphics card, or contact the support center for your computer manufacturer.
Install the updated driver or OS on your own responsibility.
We are not liable for any trouble and failure caused by this installation.
• The signal may not be supported depending on the HDBaseT transmission device. In addition, RS232C
interface may not be supported.
• 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.
* 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.
• See also the page 196.
• Check if the projector is in the Forced ECO mode because of too high ambient temperature. If this is
the case, lower the internal temperature of the projector by selecting [HIGH] for [FAN MODE]. (→
page 127)
194
8. Appendix