78
Message
Description
The horizontal or vertical frequency of the input signal is
not within the specified range.
Please.confirm.the.specs.for.your.projector.or.the.signal.
source.specs .
An improper signal is input.
Please.confirm.the.specs.for.your.projector.or.the.signal.
source.specs .
The internal temperature is rising.
Please.turn.the.power.off,.and.allow.the.projector.to.cool.
down.at.least.20.minutes ..After.having.confirmed.the.
following.items,.please.turn.the.power.ON.again ..
.•.Is.there.blockage.of.the.air.passage.aperture?.
.•.Is.the.air.filter.dirty?.
.•.Does.the.peripheral.temperature.exceed.40°C?
.•..Is.the.projector.used.at.an.altitude.of.about.1600.m.or.
higher?.If.the.projector.is.used.at.an.altitude.of.about.1600.m.
or.higher,.set.ALTITUDE.of.the.SERVICE.item.in.the.OPTION.
menu.to.HIGH.(
60).
.If.the.projector.is.used.with.a.wrong.
setting,.it.may.cause.damage.to.the.projector.itself.or.the.
parts.inside .
A note of precaution when cleaning the air filter.
Please.immediately.turn.the.power.off,.and.clean.or.change.
the.air.filter.referring.to.the.“Cleaning.and.replacing.the.
air.filter”.section.of.this.manual ..After.you.have.cleaned.or.
changed.the.air.filter,.please.be.sure.to.reset.the.filter.time.
(
44, 74
) .
The button operation is not available.
Troubleshooting
Related messages (continued)