Toshiba TDP-TW420U 用户指南

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Lamp characteristics may rarely cause the brightness to fl uctuate slightly.
The DLP

®

 chip is made using extremely advanced technology. There may be black spots 

(pixels that do not light) or bright spots (pixels that are constantly lit) on the panel. These 
are intrinsic characteristics of the technology and are not malfunctions.

A lamp is consumable item. If used for extended periods, images will appear dark, and 
the lamp could burn out.  This is characteristic of a lamp, and is not malfunction. (The 
lifetime of the lamp depends on conditions of use.)
Although this projector supports a wide range of RGB signals 

, any resolutions not 

supported by this projector (XGA) will be expanded or shrunk, which will affect image 
quality slightly. To view high-quality images, set the computer’s external output to XGA.
With some models of computer having LCD displays or the like, displaying images 
simultaneously on the projector and the monitor’s display may prevent the images from 
displaying properly. If this happens, turn off the computer’s LCD display. For information 
on how to turn off the LCD display, see the computer’s owner’s manual.
If no signal is being input from the connected equipment or signal input is stopped while 
projecting, the “No signal” message will appear.
If a signal not supported by the projector is input, the “Unsupported signal” message 
will appear.
If an unavailable operation button is pressed, the 

 icon will appear with a beep sound 

(if the beep sound is set to [On]).
Moving pictures played back on computers using DVD software may appear unnatural 
when projected with this projector. However, it is not a malfunction of the projector.

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This function automatically sets up the projector to the optimum state. It 
sets up sampling phase, frequency and screen position, for each type 
of the input signal by using simple operations.

The 

 icon will appear during processing.

The image may not be projected or auto adjustment/setting may 
not be performed correctly for input signals other than those 
supported by the projector 

.

If auto setting fails adjustment, adjust manually with the Position adjustment 
menu 

.

When the projector placement angle against the screen is changed while projecting the 
image, the picture will undergo keystone (trapezoidal) distortion.
This projector is capable of correcting this keystone distortion.

Before correction

After correction

The keystone distortion will be corrected automatically based on the projector’s 
placement angle.

Depending on the amount of keystone adjustment 
and the content of images, some information may 
be lost, or the picture quality may suffer.
Even if [Auto keystone] is set to [On], keystone distortion can be adjusted 
manually. Note that if you change the position or angle of the projector, automatic 
keystone correction will be performed again.
When [Auto keystone] is set to [On], the automatic keystone correction will be 
performed each time the power is turned on.
The keystone correction settings are memorized after the power has been turned off. 
Therefore, it is recommended that you set [Auto keystone] to [Off], if the case is that 
the projector placement angle against the screen remains unchanged and you do not 
wish to change the keystone adjustment that you set.
Some adjustments using both digital zoom and keystone correction while displaying 
an input image with a 16:9 aspect ratio, may affect displaying the menu properly. In 
such a case, reset either digital zoom or keystone correction to use the menu.

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