Troubleshooting Check List - NEC NP3150 User Manual

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.
Video and audio
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.
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).
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.
Downloaded From projector-manual.com NEC Manuals
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. the.
Power.Management.function).
Off.Timer.is.turned.off.(only.models.with.the.Off.Timer.func-
tion.).
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).
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.
50
9. Appendix