Epson EMP-821, Руководство пользователя

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77
Problems Solving
The message "No Signal." is displayed
Images are fuzzy or out of focus
Check Remedy
Are the cables connected correctly? Check that all of the cables required for projection are securely connected.
s
p.18 – p.25
Has the correct video input port been
selected?
Press the [Computer1], [Computer2], [S-Video] or [Video] button on the remote control or the
[Source Search] button on the remote control or the projector's control panel to change the image.
s
p.33
Is the power for the computer or video source
turned on?
Turn the power on for the devices.
s
p.32
Are the image signals being output to the
projector?
If the image signals are only being output to the computer's LCD monitor or to the accessory
monitor, you need to change the output to an external destination as well as the computer's own
monitor. For some computer models, when the image signals are output externally, they no longer
appear on the LCD monitor or accessory monitor.
s
Computer documentation, under a title such as "External output" or "Connecting an external
monitor"
If the connection is made while the power is already turned on, the function [Fn] key that switches
the computer's video signal to external output may not work. Turn the power for the projector and
the computer off and then back on again.
s
p.32 , p.34
Check Remedy
Has the focus been adjusted correctly?
Turn the focus ring on the projector to adjust the focus.
s
p.36
Is the lens cover still attached? Remove the lens cover.
s
p.31
Is the projector at the correct distance?
The recommended projection distance range of the EMP-821 is 86–1473 cm (2.8–48.3 ft.) and that
of the EMP-81/61 is 87–1094 cm (2.9–35.9 ft.). Set the projector up so that it is within this range.
s
p.16
Is the keystone adjustment value too large?
Decrease the projection angle to reduce the amount of keystone correction.
s
p.39
Has condensation formed on the lens?
If the projector is suddenly taken from a cold environment to a warm environment or if sudden
ambient temperature changes occur, condensation may form on the surface of the lens, and this may
cause the images to appear fuzzy. Set the projector up in the room approximately one hour before it
is to be used. If condensation forms on the lens, turn the power off and wait for the condensation to
disappear.
Only when projecting images from
a laptop computer or computer
with a built-in LCD screen