NEC NP3151W - Manual (Page 167)

53
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
external 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.background,.logo,.no.display).
Still.no.image.even.though.you.press.the.AUTO.ADJUST.but-
ton.
Still.no.image.even.though.you.carry.out.[RESET].in.the.pro-
jector’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.
9 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 efficiently.
* Print the following pages.
Frequency of occurrence...always....sometimes.(How.often?_____________________).....other.(__________________)
power
No. power. (POWER. indicator. does. not. light. green). . . See. also.
“Status.Indicator.(STATUS)”.
Power.cable’s.plug.is.fully.inserted.into.the.wall.outlet.
Main.power.switch.is.pressed.to.the.ON.position.
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.for.a.minimum.of.2.seconds.
Shut.down.during.operation.
Power.cable’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.func-
tion).
PROGRAM.TIMER.is.turned.off.(only.models.with.the.Pro-
gram.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].or.[3D.REFORM].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.resolu-
tion.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..
If.present.on.the.remote.control,.projector.selector.switch.is.
not.used.
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.
9. Appendix