NEC NP500 Users Manual - Page 85

7. Appendix Common Problems & Solutions (→ "Power/Status/Lamp Indicator" on page 75.) Problem Check These Items 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 Flicker appears on screen Image is scrolling vertically, horizontally or both Remote control does not work Indicator is lit or blinking Cross color in RGB mode • Check that the power cable is plugged in and that the power button on the projector cabinet or the remote control is on. (→ pages 21 and 32) • Ensure that the lamp cover is installed correctly. (→ page 74) • Check to see if the projector has overheated. If there is insufficient ventilation around the projector or if the room where you are presenting is particularly warm, move the projector to a cooler location. • Check to see if the lamp usage exceeds 3100 hours (up to 4100 hours : Eco mode). If so, replace the lamp. After replacing the lamp, reset the lamp hours used. (→ page 69) • 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 5500 feet/1600 meters or higher. Using the projector at altitudes approximately 5500 feet/1600 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 63) Also when the lamp is turned off, the projector internal temperature is hot. If the power is turned on before the projector has cooled down, the fan will run a short time before the lamp will turn on. • Ensure that the [AUTO POWER OFF] or [OFF TIMER] is off. (→ page 65,66) • Use the COMPUTER1, the COMPUTER2, the VIDEO or the S-VIDEO button on the remote control to select your source (Computer, Video or S-Video). (→ page 24) If there is still no picture, press the button again. • Ensure your cables are connected properly. • Use menus to adjust the brightness and contrast. (→ page 51) • Remove the lens cap. • Reset the settings or adjustments to factory preset levels using the [RESET] in the Menu. (→ page 69) • Enter your registered keyword if the Security function is enabled. (→ page 36) • 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 next page. • 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 63) • Check if an appropriate color is selected in [WALL COLOR]. If so, select an appropriate option. (→ page 58) • Adjust [HUE] in [PICTURE]. (→ page 51) • Reposition the projector to improve its angle to the screen. (→ page 25) • Use the Keystone correction function to correct the trapezoid distortion. (→ page 28) • Adjust the focus. (→ page 27) • Reposition the projector to improve its angle to the screen. (→ page 25) • Ensure that the distance between the projector and screen is within the adjustment range of the lens. (→ page 11) • 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. • Set [FAN MODE] to other than [HIGH ALTITUDE] mode when using the projector at altitudes approximately 5500 feet/1600 meters or lower. Using the projector at altitudes less than approximately 5500 feet/1600 meters and setting to [HIGH ALTITUDE] can cause the lamp to overcool, causing the image to flicker. Switch [FAN MODE] to [AUTO]. (→ page 63) • Use the COMPUTER1, the COMPUTER2, the VIDEO or the S-VIDEO button on the remote control to select your source (Computer, Video or S-Video). (→ page 24) • Adjust the computer image manually with the Horizontal/Vertical in the [IMAGE OPTIONS]. (→ page 53) • Install new batteries.(→ page 8) • Make sure there are no obstacles between you and the projector. • Stand within 22 feet (7 m) of the projector. (→ page 8) • See the POWER/STATUS/LAMP Indicator. (→ page 75) • Press the AUTO ADJ. button on the projector cabinet or the remote control. (→ page 31) • Adjust the computer image manually with [CLOCK]/[PHASE] in [IMAGE OPTIONS] in the menu. (→ page 52) For more information contact your dealer. 76