Mitsubishi Electric MDT421S: Basic Operation

English-20

1. Pressing the Main Power Switch.

NOTE: 

When the Main Power Switch is used to power off the 

LCD monitor, the remote control and the power button will 

not  activate the on mode and both green and red power 

indicator turn off.  Be sure to turn the Main Power Switch 

to the on mode before using these two options.

2. Pressing the power button.

NOTE: 

Before pressing the power button, be sure to turn on the 

Main Power button on the LCD monitor.

3. Using the remote control.

NOTE: 

Before operating the remote control, be sure to turn on 

the Main Power Switch on the LCD monitor.

Power ON and OFF Modes

The LCD monitor power indicator will turn green while powered on or red in off mode. The monitor can be powered on or off 

using the following three options:

Basic Operation

EXIT

MUTE

INPUT

ON

OFF

Power indicator

English

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Power Indicator

Status

Power ON

Green

Power OFF

Red

Red On

Green Blinking

Power Standby

Red, Green

Red Blinking

*

Power Standby when 

“SCHEDULE” is enable

Diagnosis

(Detecting failure)

See troubleshooting on 

page 38.

Using Power Management

The LCD monitor follows the VESA approved DPM Power

Management function.

The power management function is an energy saving

function that automatically reduces the power consumption

of the display when the keyboard or the mouse has not been

used for a 

fi

 xed period.

The power management feature on your new display has

been set to the “ON” mode. This allows your display to enter

a Power Saving Mode when no signal is applied. This could

potentially increase the life and decrease the power

consumption of the display.

Selecting a video source

To view a video source:

Use the input button to set [VIDEO].

Use the COLOR SYSTEM menu to set [AUTO], [NTSC],

[PAL], [SECAM], [PAL60], [4.43NTSC], according to your

video format.

Picture Size

FULL

NORMAL

DYNAMIC

CUSTOM

REAL

FULL

NORMAL

CUSTOM

REAL

Signal Type

NORMAL

DYNAMIC

FULL

4:3

Squeeze

NORMAL SIZE

Recommended Size

RGB 1, 2, 3, 4, 5, 6

DVD/HD, VIDEO<S>,

VIDEO

NORMAL: 

Display the input signal aspect ratio from the PC 

signal, or display in 4:3 aspect ratio from the DVD/HD or 

VIDEO signal.

FULL:

 Display in entire screen.

DYNAMIC:

  Expand 4:3 pictures to the entire screen with 

non-linearity. (Some round image will be cut by expansion.)

CUSTOM (ZOOM):

 Image can be expanded beyond the 

active display area. The image which is outside of active dis-

play area is not displayed.

REAL:

 Image will be displayed 1 by 1 pixel.

ZOOM

ZOOM

Picture Mode

Audio Source Switching

You can switch the audio source using the AUDIO INPUT 

button. 

Control Lock Mode

This function disables the operation buttons so that the ad-

justments you make are not changed when they are pressed. 

To disable the buttons, press and hold down the   and   

buttons together for at least 3 seconds.

To enable the buttons, press and hold down the   and   

buttons together for at least 3 seconds again.

HDMI

AUDIO1

AUDIO2

AUDIO3

AUDIO1

AUDIO2

AUDIO3

RGB 1, 2, 6

Other than 

RGB 1, 2, 6

HIGHBRIGHT

STANDARD

sRGB

HIGHBRIGHT

STANDARD

CINEMA

RGB 1, 2, 3, 4, 5, 6

DVD/HD, VIDEO<S>,

VIDEO

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Information OSD

RGB1, 2, 3, 4, 5, 6

Video Input mode

Input signal Information

Audio input mode

Picture Size mode

RGB3 

1024 x 768 

48kHz  60Hz

AUDIO : 1 

SIZE : FULL

)

DVD/HD

Video Input mode

Audio input mode

Picture Size mode

DVD/HD

AUDIO : 3 

SIZE : FULL

VIDEO<S>, VIDEO

Video Input mode

Input Signal Color System mode

Audio input mode

Picture Size mode

VIDEO<S>

NTSC

AUDIO : 3

SIZE : NORMAL

PIP or POP

Main:RGB3

Sub:VIDEO<S>

Main picture Information

Sub picture Information

Main picture Information

RGB3 

1024 x 768 

48kHz  60Hz

AUDIO : 1 

VIDEO<S> 

NTSC 

SIZE : FULL

)