NEC U300X User Manual
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Contents
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PowerNo power (POWER indicator does not light blue).Power cable’s plug is fully inserted into the wall outlet.Lamp cover is installed correctly.Lamp Hours Used (lamp operation hours) was cleared afterlamp replacement.No power even though you press and hold the POWERbutton for a minimum of 1 second.Shut down during operation.Power cable’s plug is fully inserted into the wall outlet.Lamp cover is installed correctly .Power Management is turned off (only models with thePower Management function).Video and AudioNo image is displayed from your PC or video equipment to theprojector.Still no image even though you connect the projector to thePC first, then start the PC.Enabling your notebook PC’s signal output to the projector.• A combination of function keys will enable/disable theexternal display. Usually, the combination of the “Fn” keyalong with one of the 12 function keys turns the externaldisplay on or off.No image (blue background).Still no image even though you press the AUTO ADJUSTbutton.Still no image even though you carry out [RESET] in theprojector’s menu.Signal cable’s plug is fully inserted into the input connectorA message appears on the screen.( _____________________________________________ )The source connected to the projector is active and avail-able.Still no image even though you adjust the brightness and/orthe contrast.Input source’s resolution and frequency are supported bythe projector.Image is too dark.Remains unchanged even though you adjust the brightnessand/or the contrast.Image is distorted.Image appears to be trapezoidal (unchanged even thoughyou carry out the [KEYSTONE] adjustment).Parts of the image are lost.Still unchanged even though you press the AUTO ADJUSTbutton.Still unchanged even though you carry out [RESET] in theprojector’s menu.Image is shifted in the vertical or horizontal direction.Horizontal and vertical positions are correctly adjusted on acomputer signal.Input source’s resolution and frequency are supported bythe projector.Some pixels are lost.Image is flickering.Still unchanged even though you press the AUTO ADJUSTbutton.Still unchanged even though you carry out [RESET] in theprojector’s menu.Image shows flickering or color drift on a computer signal.Image appears blurry or out of focus.Still unchanged even though you checked the signal’s reso-lution on PC and changed it to projector’s native resolution.The throw distance is within 5” to 12” (130 to 314 mm) onU300X/U250X and 6” to 12” (148 to 311 mm) on U310W/U260W.Still unchanged even though you adjusted the focus.No sound.Audio cable is correctly connected to the audio input of theprojector.Still unchanged even though you adjusted the volume level.OtherRemote control does not work.No obstacles between the sensor of the projector and theremote control.Projector is placed near a fluorescent light that can disturbthe infrared remote controls.Batteries are new and are not reversed in installationButtons on the projector cabinet do not work.[CONTROL PANEL LOCK] is not turned on in the menu.Still unchanged even though you press and hold the EXITbutton for minimum of 10 seconds.Troubleshooting Check ListBefore contacting your dealer or service personnel, check the following list to be sure repairs are needed also byreferring to the “Troubleshooting” section in your user’s manual. This checklist below will help us solve yourproblem more efficiently.* Print the following pages.Frequency of occurrence always sometimes (How often?_______________________) other (__________________) |
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