NEC NP4001/NP4000 User Manual
Also see for NP4000: SpecificationsControl commandsControl commandsPlacement recommendations guideQuick setup guide
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1379. Troubleshooting Check ListBefore contacting your dealer or service personnel, check the following list to be sure repairsare needed also by referring to the o Troubleshooting section on page 112 of your user’smanual. This checklist below will help us solve your problem more efficiently.Frequency of Occurrence always sometimes (How often?________) other (________)PowerNo power (POWER indicator does not light green) Seealso “Status Indicator (STATUS)”.Power cable's plug is fully inserted into the wall out-let.Main power switch is pressed to the ON position.Lamp cover is installed correctly.Lamp Hours Used (lamp operation hours) wascleared after lamp replacement.No power even though you press and hold thePOWER button for a minimum of 2 seconds.Shut down during operation.Power cable's plug is fully inserted into the wall out-let.Lamp cover is installed correctly.Power Management is turned off (only models withthe Power Management function).Off Timer is turned off (only models with the OffTimer function).Video and AudioNo image is displayed from your PC or video equipmentto the projector.Still no image even though you connect the projec-tor to the PC first, then start the PC.Enabling your notebook PC’s signal output to theprojector.• A combination of function keys will enable/disablethe external display. Usually, the combination of the“Fn” key along with one of the 12 function keysturns the external display on or off.No image (blue background, logo, no display).Still no image even though you press the AUTOADJUST button.Still no image even though you carry out [Reset] inthe projector’s menu.Signal cable's plug is fully inserted into the inputconnectorA message appears on the screen.( __________________________________ )The source connected to the projector is active andavailable.Still no image even though you adjust the bright-ness and/or the contrast.Input source's resolution and frequency aresupported by the projector.Image is too dark.Remains unchanged even though you adjust thebrightness and/or the contrast.Image is distorted.Image appears to be trapezoidal (unchanged eventhough you carry out the [Keystone] or [3D Reform]adjustment).Parts of the image are lost.Still unchanged even though you press the AUTOADJUST button.Still unchanged even though you carry out [Reset]in the projector’s menu.Image is shifted in the vertical or horizontal direction.Horizontal and vertical positions are correctly ad-justed on a computer signal.Input source's resolution and frequency are sup-ported by the projector.Some pixels are lost.Image is flickering.Still unchanged even though you press the AUTOADJUST button.Still unchanged even though you carry out [Reset]in the projector’s menu.Image shows flickering or color drift on a computersignal.Image appears blurry or out of focus.Still unchanged even though you checked the sig-nal’s resolution on PC and changed it to projector’snative resolution.Still unchanged even though you adjusted the fo-cus.No sound.Audio cable is correctly connected to the audio in-put of the projector.Still unchanged even though you adjusted the vol-ume level.AUDIO OUT is connected to your audio equipment(only models with the AUDIO OUT connector). |
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