Mitsubishi Electric Ldt422v Users Manual

							42" LCD Display Monitor
MODEL
 
						

							English-1
English
Features  ................................................................................................................................................................................... English-2
Important Information  .............................................................................................................................................................. English-3
Declaration  ............................................................................................................................................................................... English-5
Safety Precautions, Maintenance & Recommended Use  ....................................................................................................... English-6
Contents  ................................................................................................................................................................................... English-7
Parts Name and Functions ....................................................................................................................................................... English-8
    Buttons, Switch, and Indicator  .................................................................................................................................. English-8
    Connectors and Terminals  ........................................................................................................................................ English-9
    Wireless Remote Control  .......................................................................................................................................... English-10
    How to Use the Wireless Remote Control  ................................................................................................................ English-11
Preparation for use  .................................................................................................................................................................. English-12
    Flow of preparation  ................................................................................................................................................... English-12
[P-1]  Preparation for installation  ............................................................................................................................................ English-13
    Determine the installation location  ............................................................................................................................ English-13
    Ventilation requirements for enclosure mounting  ..................................................................................................... English-13
[P-2]  Installing the monitor ..................................................................................................................................................... English-14
    Installing and removing the stands  ........................................................................................................................... English-14
    Installing the main switch cover  ................................................................................................................................ English-14
    Using the wall mount or ceiling mount  ...................................................................................................................... English-14
    Installing in the portrait position  ................................................................................................................................English-15
[P-3]  Installing the speakers  .................................................................................................................................................. English-16
[P-4] Connection procedure  .................................................................................................................................................. English-17
    Wiring diagram  .......................................................................................................................................................... English-17
    Prevention of disconnection of HDMI cable  ............................................................................................................. English-17
    Connecting with a computer (analog connection)  .................................................................................................... English-18
    Connecting with a computer (digital connection)  ..................................................................................................... English-19
    Connecting a video device (component video/HDMI device)  .................................................................................. English-20
    Connecting a video device (composite video/S video device)/stereo amplifi er  ...................................................... English-21
[P-5]  Connecting the power cord to the monitor  .................................................................................................................. English-22
    Connecting the power source  ................................................................................................................................... English-22
How to Use ............................................................................................................................................................................... English-23
    Flow of How to Using  ................................................................................................................................................ English-23
[U-1]  Turning on all the connected devices  ........................................................................................................................... English-24
    Turning on external devices  ...................................................................................................................................... English-24
    Turning on the monitor  .............................................................................................................................................. English-24
    Power Management Function  ................................................................................................................................... English-24
[U-2]  Selecting the video input  .............................................................................................................................................. English-25
[U-3]  Controlling the external devices  ................................................................................................................................... English-26
[U-4] Auto-setup  .................................................................................................................................................................... English-26
[U-5]  Selecting the picture mode  ........................................................................................................................................... English-26
[U-6]  Screen adjustment  ........................................................................................................................................................ English-27
[U-7]  Picture adjustment  ........................................................................................................................................................ English-27
[U-8]  Volume control  .............................................................................................................................................................. English-28
[U-9]  Schedule setting  ........................................................................................................................................................... English-28
    How to set up schedule  ............................................................................................................................................. English-29
[U-10] Remote control  .............................................................................................................................................................. English-30
    RS-232C Remote control  .......................................................................................................................................... English-30
Confi guration and basic operation of OSD screen  ..................................................................................
............................... English-32
  Confi guration of OSD screen  .................................................................................................................................... English-32
    Basic operation of OSD  ............................................................................................................................................. English-33
OSD screen functions  .............................................................................................................................................................. English-34
Other functions  ........................................................................................................................................................................ English-42
    Selecting a video source  ........................................................................................................................................... English-42
    Picture size  ................................................................................................................................................................ English-42
    Picture mode  ............................................................................................................................................................. English-42
    Audio input change  ................................................................................................................................................... English-42
    OSD information  ........................................................................................................................................................ English-42
    Control Lock mode  .................................................................................................................................................... English-42
    PIP, POP function  ...................................................................................................................................................... English-43
Troubleshooting  ....................................................................................................................................................................... English-44
Specifi cations  .......................................................................................................................................................................... English-45
Pin Assignment  ........................................................................................................................................................................ English-46
Index
 
						

							English-2
Features
Full 1920 x 1080 High-defi nition Resolution  Page 45 
The LDT422V panel reproduces images from video and computer signals with precision and clarity, delivering full 1920 x 1080 high-
defi nition resolution. The high-durability panel reduces the risk of image persistence in commercial applications.
Wide-range Color Temperature Adjustment 
 Page 34 
The display color temperatures can be adjusted from 2,600 K to 10,000 K. Such a wide range adjustment is important for industries 
such as broadcasters and food retailers where color accuracy and fl esh tones are critical.
Tiling Capability with Frame compensation 
 Page 39 
Up to 25 panels (5 wide x 5 high) can be combined to create a single large image (i.e., video wall) or other high-impact signage. A 
frame compesation function is incorporated to compensate the width of panel bezels so that images are displayed with the utmost 
accuracy.
PiP, PoP and Side-by-side 
 Pages 37 and 43 
Picture-in-Picture and Picture-out-of-Picture are available when you want to display video content from a video input source in the 
sub picture and display the PC input source in the main picture, and vice versa. 
The native resolution as high as 1920 x 1080 can display these two input sources in the Side-by-side mode, ideal for broadcasting 
and video-conferencing applications.
Programmable Scheduling Function 
 Page 38 
The monitor’s operating schedule can be programmed for up to seven different scheduled time intervals by time, day of the week 
and input port. This allows video content from different inputs to be displayed on certain monitors within the same installation 
according to the schedule, and extends the monitor’s life and saves the power by turning it off during those hours or days it is not in 
use.
Screen-saver Functions 
 Page 40 
To reduce image persistence and maximize the panel life in demanding signage applications, the LDT Series is equipped with four 
screen-saver functions.
• GAMMA
• COOLING FAN
• BRIGHTNESS
• MOTION
Side Border Color Select 
 Page 40 
When the 4:3 screen is displayed, the side border color can be selected from black, gray and white.
Power-on Delay 
 Page 39 
For installations employing numerous monitors, the power-on delay function can power up the monitors sequentially with delay 
between 2-50 seconds after the power is applied. Using this function can prevent inrush current problems and reduce the overall 
electrical load requirements when a single power supply is used.
Flexible Landscape & Portrait Positioning 
 Page 15 
Designed to enhance for heat dissipation and long-term reliability in both landscape (horizontal) and portrait (vertical) positions.
Closed Caption 
 Page 39 
You can display captions. 
When closed-caption video signals are input, you can select to display or hide the captions on the screen. 
This monitor is compliant with EIA-608-A.
 
						

							English-3
English
DECLARATION OF CONFORMITY
This device complies with Part 15 of FCC Rules. Operation is subject to the following two conditions. (1) This device may not 
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause 
undesired operation.
      U.S. Responsible Party:  Mitsubishi Digital Electronics America, Inc.
   Address:  9351 Jeronimo Road,
      Irvine, California 92618 U.S.A.
   Tel. No.:   +1 - (949) 465-6000
   Type of Product:  Computer Monitor
   Equipment Classifi cation:  Class B Peripheral
   Model:   LDT422V (BR931)
We hereby declare that the equipment specifi ed above
conforms to the technical standards as specifi ed in the FCC Rules.
Windows is a registered trademark of Microsoft Corporation. All other brands and product names are trademarks or 
registered trademarks of their respective owners.
HDMI, the HDMI logo and High-Defi nition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing 
LLC.
Canadian Department of Communications Compliance Statement
DOC:  This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
C-UL:  Bears the C-UL Mark and is in compliance with Canadian Safety Regulations according to CAN/CSA C22.2
No. 60950-1.
FCC Information
1.  Use the attached specifi ed cables with this equipment so as not to interfere with radio and television reception.
(1)  The power supply cord you use must have been approved by and comply with the safety standards of U.S.A.,
(2)  Please use the supplied shielded video signal cable. Use of other cables and adapters may cause interference with radio and 
television reception.
2. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the 
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. 
This equipment generates, uses, and can radiate radio frequency energy, and, if not installed and used in accordance with the 
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not 
occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be 
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the 
following measures:
•  Reorient or relocate the receiving antenna.
•  Increase the separation between the equipment and receiver.
•  Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
•  Consult your dealer or an experienced radio/ TV technician for help.
3. You are cautioned that changes or modifi cations not expressly approved by the party responsible for compliance could void 
your authority to operate the equipment.
Important Information
 
						

							English-4
Important Information (continued)
TO PREVENT FIRE OR SHOCK HAZARDS, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. ALSO, DO NOT USE THIS UNIT’S 
POL ARIZED PLUG WITH AN EXTENSION CORD RECEPTACLE OR OTHER OUTLETS UNLESS THE PRONGS CAN BE FULLY INSERTED.
REFRAIN FROM OPENING THE CABINET AS THERE ARE HIGH VOLTAGE COMPONENTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
TO REDUCE THE RISK OF ELECTRIC SHOCK, MAKE SURE POWER CORD IS UNPLUGGED FROM WALL SOCKET. TO 
FULLY DISENGAGE THE POWER TO THE UNIT, PLEASE DISCONNECT THE POWER CORD FROM THE AC OUTLET. DO 
NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE 
PERSONNEL.
This symbol warns user that uninsulated voltage within the unit may have suffi cient magnitude to cause electric shock. 
Therefore, it is dangerous to make any kind of contact with any part inside this unit.
This symbol alerts the user that important literature concerning the operation and maintenance of this unit has been 
included. Therefore, it should be read carefully in order to avoid any problems.
WARNING
CAUTION
CAUTION:
This LCD Monitor uses a lamp that contains mercury. Disposal of the lamp or the LCD Monitor with the lamp may be 
regulated due to environmental considerations. For disposal or recycling information, please contact your local authorities or 
the Electronic Industries Alliance: www.eiae.org. (For US only).
CAUTION
 
						

							English-5
English
We hereby certify that the color monitor LDT422V (BR931) 
is in compliance with
Council Directive 2006/95/EC:
  — EN 60950-1
Council Directive 2004/108/EC:
  — EN 55022
  — EN 61000-3-2
  — EN 61000-3-3
  — EN 55024and marked with
Mitsubishi Electric Corporation
2-7-3, Marunouchi,
Chiyoda-Ku
Tokyo 100-8310, Japan
Declaration
Declaration of the Manufacturer
Declaration of the Manufacturer
Note: This symbol mark is for EU countries only.
This symbol mark is according to the directive 2002/96/EC Article 10 Information for users and 
Annex IV, and/or to the directive 2006/66/EC Article 20 Information for end-users and Annex II.
Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality materials and 
components which can be recycled and/or reused.
This symbol means that electrical and electronic equipment, batteries and accumulators, at their end-of-life, 
should be disposed of separately from your household waste.
If a chemical symbol is printed beneath the symbol shown above, this chemical symbol means that the 
battery or accumulator contains a heavy metal at a certain concentration. This will be indicated as follows:
Hg: mercury (0,0005%),  Cd: cadmium (0,002%),  Pb: lead (0,004%) 
In the European Union there are separate collection systems for used electrical and electronic products, 
batteries and accumulators.
Please, dispose of this equipment, batteries and accumulators correctly at your local community waste 
collection/recycling centre.
Please, help us to conserve the environment we live in!  Warning
This is a Class A product. In a domestic environment this product may cause radio interference, in which case the 
user may be required to take adequate measures.
 
						

							English-6
FOR OPTIMUM PERFORMANCE, PLEASE NOTE 
THE FOLLOWING WHEN SETTING UP AND USING 
THE LCD COLOR MONITOR:
• DO NOT REMOVE MONITOR BACK COVER. There are 
no user serviceable parts inside and opening or removing 
covers may expose you to dangerous shock hazards or 
other risks.
  Refer all servicing to qualifi ed service personnel.
•  Do not spill any liquids into the cabinet or use your monitor 
near water.
•  Do not insert objects of any kind into the cabinet slots, 
as they may touch dangerous voltage points, which can 
be harmful or fatal or may cause electric shock, fi re or 
equipment failure.
•  Do not place any heavy objects on the power cord.
  Damage to the cord may cause shock or fi re.
•  Do not place this product on a sloping or unstable cart, 
stand or table, as the monitor may fall, causing serious 
damage to the monitor.
•  When operating the LCD monitor with its AC 100-120 V 
power supply in North America, use a power supply cord 
provided with the monitor.
•  When operating the LCD monitor with its AC 220-240 V 
power supply in Europe, use a power supply cord provided 
with the monitor.
•  In UK, use a BS-approved power cord with molded plug 
having a black (10 A) fuse installed for use with this monitor. 
If a power cord is not supplied with this monitor, please 
contact your supplier.
•  When operating the LCD Monitor with a 220-240 V AC 
power supply in Australia, use the power cord provided with 
the monitor.
  If a power cord is not supplied with this equipment, please 
contact your supplier.
•  For all other cases, use a power cord that matches the AC 
voltage of the power outlet and has been approved by and 
complies with the safety standard of your particular country.
•  Do not place any objects onto the monitor and do not use 
the monitor outdoors.
•  The inside of the fl uorescent tube located within the LCD 
monitor contains mercury. Please follow the bylaws or rules 
of your municipality to dispose of the tube properly.
•  Do not bend power cord.
•  Do not use monitor in high temperature, humid, dusty, or 
oily areas.
•  If monitor or glass is broken, do not come in contact with 
the liquid crystal and handle with care.
•  If the LCD monitor is damaged and the liquid crystal leaks 
out, do not inhale or swallow it.
•  Allow adequate ventilation around the monitor, so that heat 
can properly dissipate. Do not block ventilated openings or 
place the monitor near a radiator or other heat sources.
  Do not put anything on top of the monitor.
•  The power cable connector is the primary means of 
detaching the system from the power supply. The monitor 
should be installed close to a power outlet, which is easily 
accessible.
•  Handle with care when transporting. Save packaging for 
transporting.•  Please clean the holes of back cabinet to reject dirt and 
dust at least once a year because of set reliability.
•  If using the cooling fan continuously, it’s recommended to 
wipe holes a minimum of once a month.
•  When installing the remote control batteries;
-  Align the batteries according to the (+) and (-) indications 
inside the case.
-  Align the (-) indication of the batteries fi rst inside the 
case.
CAUTION:
Immediately unplug your monitor from the wall outlet and refer 
servicing to qualifi ed service personnel under the following 
conditions:
•  When the power supply cord or plug is damaged.
•  If liquid has been spilled, or objects have fallen into the 
monitor.
•  If the monitor has been exposed to rain or water.
•  If the monitor has been dropped or the cabinet damaged.
•  If the monitor does not operate normally by following 
operating instructions.
Recommend Use
CAUTION:
•  For optimum performance, allow 20 minutes for warm-up.
•  Rest your eyes periodically by focusing on an object at least 
5 feet away. Blink often.
•  Position the monitor at a 90° angle to windows and other 
light sources to minimize glare and refl ections.
•  Clean the LCD monitor surface with a lint-free, non-abrasive 
cloth. Avoid using any cleaning solution or glass cleaner!
•  Adjust the monitor’s brightness, contrast, and sharpness 
controls to enhance readability.
•  Avoid displaying fi xed patterns on the monitor for long 
periods of time to avoid image persistence (after image 
effects).
•  Get regular eye checkups.
Ergonomics
To realize the maximum ergonomic benefi ts, we recommend 
the following:
•  Use the preset Size and Position controls with standard 
signals.
•  Use the preset Color Setting.
•  Use non-interlaced signals.
•  Do not use primary color blue on a dark background, as 
it is diffi cult to see and may produce eye fatigue due to 
insuffi cient contrast.
Safety Precautions, Maintenance & Recommended Use
 
						

							English-7
English
Contents
 Power Cord
For EU Video Signal Cable
(Mini D-SUB 15-pin to 
Mini D-SUB 15-pin Cable)
 Clamper x 2
(To prevent from falling)
 Screw (3x6) x 2
(To fi x Main switch cover)
 Main switch cover
 Cable Holder Wireless Remote 
Control and A A A 
Batteries Your LCD monitor (LDT422V ) comes with the following:
*  For the use in the other regions, use a power cord that 
matches the AC voltage of the power outlet and has been 
approved by and complies with the safety standard of those 
regions or countries.
The following components are supplied as option.
• External Speakers
• Stands Screw (M4x8) x 2
(For Clamper)
 Clamper x 2
(For securing the power 
cord and HDMI cable) LCD Monitor
 Power Cord
For North America *  The supplied power cord varies depending on destination. User’s Manual
 
						

							English-8
EXIT INPUT MUTE
5 INPUT button
Displays the OSD menu to switch the video input. 
You can select [RGB1], [RGB2], [RGB3], [RGB4], [DVD/HD], 
[VIDEO], or [VIDEO] using the UP (
) or DOWN () button.
6  PLUS (+) button
Acts as (+) button to increase the adjustment in the OSD menu. 
Increases the audio output level when the OSD menu is off.
7  MINUS (-) button
Acts as (-) button to decrease the adjustment in the OSD menu. 
Decreases the audio output level when the OSD menu is off.
8 UP () button
Activates the OSD menu when the OSD menu is off.
Acts as 
 button to move the highlighted area up to select an 
adjustment item in the OSD menu.
9 DOWN () button
Activates the OSD menu when the OSD menu is off.
Acts as 
 button to move the highlighted area down to select 
an adjustment item in the OSD menu.
10 EXIT button
Activates the OSD menu when the OSD menu is off.
Acts as EXIT button to go back to the previous OSD menu.
(Reference) Control Lock mode
You can lock the operation buttons. See page 42.
1  Main Power Switch
Switches the main power on/off.
2  Remote control sensor and Power indicator
Remote control sensor:  Receives the signal from the wireless 
remote control.
Power indicator:  Indicates the state of the LCD monitor.
• Steady green:  The power is on. 
• Steady red:  The power is off. 
    Some operations such as power-on 
are possible. 
• Steady green and red:  The LCD monitor is in the sleep 
mode.
• Off:  The main power is off. 
• Steady red and blinking green:  The LCD monitor is in the 
schedule standby mode. 
• Blinking red:  The LCD monitor has an error 
(detected by the self-diagnostic 
function).
3  POWER button ()
Switches the power on/off. 
This button doesn’t work when the power indicator is off. 
Turn on the main power. (See page 24.)
4 MUTE button
Switches the audio mute on/off.
Buttons, Switch, and Indicator
Button Location
ON OFF
Parts Name and Functions
NOTE:
For details about the OSD menu operation using the buttons, see “Basic operation of OSD.” (See page 33.)
 
						

							English-9
English
1  AC IN (3-pin, with earth terminal)
Connects with the supplied power cord.
2  EXTERNAL SPEAKER TERMINAL
Connects with the special stereo speakers (option).
3 AUDIO IN
Connects with the audio output connector of external 
equipment such as a computer, VCR, and DVD player. 
(a) AUDIO1: ø3.5 stereo mini-jack connector
(b) AUDIO2: RCA connector
(c) AUDIO3: RCA connector
4  AUDIO OUT (RCA)
Outputs the signal that is supplied to the selected AUDIO IN 
connector. Connects with an external audio amplifi er, etc.
5  VIDEO INPUT/OUTPUT (BNC/S connector)
Connects with video equipment. 
S VIDEO IN:  S-video input connector (MINI DIN 4-pin)
VIDEO IN:  BNC connector
VIDEO OUT:  BNC connector
Connectors and Terminals
L
IN
IN
OUTOUTR
RBGCr/Pr Cb/PbY HV
6  RS-232C connector (D-SUB 9-pin)
IN connector:
Connects with the RS-232C OUT connector of a computer or 
other connected LDT422V.
OUT connector:
Connects with the RS-232C IN connector of other connected 
LDT422V.
7  RGB1 IN (HDMI)
Connects with the digital video output of a computer, DVD 
player, etc.
8  RGB OUT (MINI D-SUB 15-pin)
Outputs the signal that is supplied to the RGB3 or RGB4 IN 
connector.
9  RGB2 IN (DVI-D)
Connects with the digital video output of a computer, etc.
10  RGB3 IN (MINI D-SUB 15-pin)
Connects with the analog video output of a computer, etc.
11  RGB4 IN, DVD/HD IN (BNC)
Connects with the analog video output of a computer, etc.
Parts Name and Functions (continued)
Anti-theft lock slot
You can insert a Kensington 
anti-theft lock key.