Bedienungsanleitung Nec P451X (Seite 228 von 231) (Englisch)

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9. Appendix

No image is displayed from your PC or video equipment to the

projector�

Still no image even though you connect the projector to the PC

ﬁrst, then start the PC�

Enabling your notebook PC’s signal output to the projector�

• Acombinationoffunctionkeyswillenable/disabletheexter-

naldisplay.Usually,thecombinationofthe“Fn”keyalong

withoneofthe12functionkeysturnstheexternaldisplay

onoroff.

No image (blue or black background, no display)�

Still no image even though you press the AUTO ADJUST

button�

Still no image even though you carry out [RESET] in the

projector’s menu�

Signal cable’s plug is fully inserted into the input connector

A message appears on the screen�

( _____________________________________________ )

The source connected to the projector is active and available�

Still no image even though you adjust the brightness and/or

the contrast�

Input source’s resolution and frequency are supported by the

projector�

❼ Troubleshooting Check List

Beforecontactingyourdealerorservicepersonnel,checkthefollowinglisttobesurerepairsareneededalsoby

referringtothe“Troubleshooting”sectioninyouruser’smanual.Thischecklistbelowwillhelpussolveyourproblem

moreefciently.

*Printthispageandthenextpageforyourcheck.

Frequency of occurrence  always  sometimes (How often?_____________________)  other (__________________)

Power

No power (POWER indicator does not light blue) See also “Status

Indicator (STATUS)”�

Power cord’s plug is fully inserted into the wall outlet�

Lamp cover is installed correctly �

Lamp Hours Used (lamp operation hours) was cleared after

lamp replacement�

No power even though you press and hold the POWER but-

ton�

Shut down during operation�

Power cord’s plug is fully inserted into the wall outlet�

Lamp cover is installed correctly �

[AUTO POWER OFF] is turned off (only models with the [AUTO

POWER OFF] function)�

[OFF TIMER] is turned off (only models with the [OFF TIMER]

function)�

Video and Audio

Image is too dark�

Remains unchanged even though you adjust the brightness

and/or the contrast�

Image is distorted�

Image appears to be trapezoidal (unchanged even though you

carry out the [KEYSTONE] adjustment)�

Parts of the image are lost�

Still unchanged even though you press the AUTO ADJUST

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 adjusted on a

computer signal�

Input source’s resolution and frequency are supported by the

projector�

Some pixels are lost�

Image is ﬂickering�

Still unchanged even though you press the AUTO ADJUST

button�

Still unchanged even though you carry out [RESET] in the

projector’s menu�

Image shows ﬂickering or color drift on a computer signal�

Still unchanged even though you change [FAN MODE] from

[HIGH ALTITUDE] to [AUTO]�

Image appears blurry or out of focus�

Still unchanged even though you checked the signal’s resolution

on PC and changed it to projector’s native resolution�

Still unchanged even though you adjusted the focus�

No sound�

Audio cable is correctly connected to the audio input of the

projector�

Still unchanged even though you adjusted the volume level�

AUDIO OUT is connected to your audio equipment (only models

with the AUDIO OUT connector)�

Other

Remote control does not work�

No obstacles between the sensor of the projector and the

remote control�

Projector is placed near a ﬂuorescent light that can disturb the

infrared remote controls�

Batteries are new and are not reversed in installation�

Buttons on the projector cabinet do not work (only models with the

[CONTROL PANEL LOCK] function)

[CONTROL PANEL LOCK] is not turned on or is disabled in

the menu�

Still unchanged even though you press and hold the EXIT button

for a minimum of 10 seconds�

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