Mitsubishi Electric Mdt421s Users Manual

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ADVANCED OPTION
Main-Menu
INPUT RESOLUTION     * : INPUT RGB3, 4, 5 only
Selects to decision of input signal about below timings, 1024x768, 1280x768 and 1360x768.
AUTO: Determines the resolution automatically.
1024x768: Determines the resolution as 1024x768
1280x768: Determines the resolution as 1280x768
1360x768: Determines the resolution as 1360x768
The setting you select becomes effective when POWER is turned OFF and ON again.
BLACK LEVEL EXPANSION     * : INPUT RGB1 (HDMI INPUT MODE:...

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HEAT STATUS
Information of status for COOLING FAN, BRIGHTNESS and TEMPERATURE.
COOLING FAN comes to run when inside temperature is over a guaranteed limit.
In this case warning is displayed on the screen.
POWER ON DELAY
Adjusts the delay time from “standby” to “power on” mode.
“POWER ON DELAY” time is selectable from 0-50 seconds.
DATE AND TIME
Adjusts the current date and time for internal clock.
You should set this function when you use “SCHEDULE”.
SCHEDULE
Programs the monitors...

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NOTE
< IMAGE PERSISTENCE >
Please be aware that LCD Technology may experience a phenomenon known as Image Persistence. Image Persistence 
occurs
 when residual or “ghost” image of a previous image remains visible on the screen. Unlike CRT monitors, LCD 
monitors’ image persistence is not permanent, but constant images being displayed for a long period of time should be 
avoided.
To alleviate image persistence, turn off the monitor for as long as the previous image was displayed. For example,...

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< PIP, POP and SIDE BY SIDE >
The following table shows the combination of signal inputs under which the “PIP” and “POP” modes function. These modes do 
not function, however, when the screen size is “CUSTOM” or “REAL”.
< Supplemental information of the auto brightness function >
To control multiple monitors collectively
In such a case where the tiling function is used, you can control the auto brightness function by sharing the detection result of 
the brightness sensor of a certain...

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To use a computer to control the monitors
When using a computer to control the monitors, you must prepare an application software program for control by yourself. 
1.  Connect the RS-232C IN connector of the Master monitor shown above and the RS-232C connector of the computer using 
an RS-232C cable. 
  Or, using a CAT5 cable, connect the RS-232C connector of the computer to the CAT5 IN connector of the Master monitor via 
the CAT5 Tx BOX. 
2.  Assign a monitor ID to each multi-connected...

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Controlling the LCD monitor via RS-232C/RS-485 Remote Control
This LCD monitor can be controlled by a personal computer connected with an RS-232C cable or a CAT5 cable via the CAT5 Tx 
BOX (option) and CAT5 Rx BOX (option).
Functions that can be controlled by the personal computer are:
•  Power ON or OFF
•  Switching between input signals
Connection
Connection by RS-232C  (For RS-232C cable, the reverse type cable should be used.) 
Connection by CAT5 RS-485  (For CAT5 cable, the...

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3)  Control sequence
(1)  The command from a computer to the LCD monitor will be sent in 600 ms.
(2)  The LCD monitor will send a return command 600 ms* after it has received and encoded. If the command isn’t received 
correctly, the LCD monitor will not send the return command.
(3)  The personal computer checks the command and confi rms if the command, which has been sent, has been executed or 
not.
(4)  This LCD monitor sends various codes other than return code. When having a control...

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Color Control Systems:
Allows you to adjust the colors on your screen and customize the color accuracy of your monitor to a variety of 
standards.
sRGB Color Control:
A new optimized color management standard which allows for color matching on computer displays and other 
peripherals. The sRGB standard, which is based on a calibrated color space, allows for optimal color representation and 
backward compatibility with other common color standards.
OSD (On-Screen-Display) Controls:...

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Troubleshooting
No picture
•   The signal cable should be completely connected to the display card/computer.
•   The display card should be completely seated in its slot.
•   Front Power Switch and computer power switch should be in the ON position.
•   Check to make sure that a supported mode has been selected on the display card or system being used.
  (Please consult display card or system manual to change graphics mode.)
•   Check the monitor and your display card with respect to...

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No Sound
•  Check to see if speaker cable is properly connected.
•   Check to see if mute is activated.
•  Check to see if volume is set at minimum.
Remote Control is not available
•   Check the Remote Control’s batteries status.
•   Check if batteries are inserted correctly.
•   Check if the Remote Control is pointing at the monitor’s remote sensor.
“SCHEDULE”/“OFF TIMER” function is not working properly
•   The “SCHEDULE” function will be disabled when the “OFF TIMER” is set.
•   If...