NEC PA1705UL-W Installation 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
Color tone or hue is unusual
Image isn't square to the
screen
Picture is blurred
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.
• 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 CLOSE button is 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.
• A hot room may trigger the projector's protection functions, which can result in a temporary reduction
in luminance (brightness). Reduce the temperature in the room.
• Check if an appropriate color is selected in [WALL COLOR]. If so, select an appropriate option. (→
page 126)
• Adjust [HUE] in [PICTURE]. (→ page 100)
• Reposition the projector to improve its angle to the screen. (→ page 26)
• Perform [GEOMETRIC CORRECTION] when the trapezoid is distorted. (→ page 45)
• Adjust the focus. (→ page 29)
• Reposition the projector to improve its angle to the screen. (→ page 26)
• Ensure that the distance between the projector and screen is within the adjustment range of the
lens. (→ page 171)
• Has the lens been shifted by an amount exceeding the guaranteed range? (→ page 175)
• Condensation may form on the lens if the projector is cold, brought into a warm place and is then
turned on. Should this happen, let the projector stand until there is no condensation on the lens.
183
9. Appendix