Mitsubishi Electric Ldt422v Users Manual

							English-10
1 POWER button
Switches the power on/off.
*  When the Power indicator is not glowing, no controls will 
work.
2 INPUT buttons
Select the input signal from [RGB1] (HDMI), [RGB2] (DVI-D), 
[RGB3] (D-SUB), [RGB4] (BNC), [DVD/HD] (YPbPr), [VIDEO], 
and [ VIDEO]. 
NOTE:
The [CAT5] and [DISPL AY PORT ] buttons don’t work.
3  PICTURE MODE button
Selects the picture mode from [HIGHBRIGHT], [STANDARD], 
[sRGB], and [CINEMA]. See page 26.
  HIGHBRIGHT:  The brightness is maximized.
  STANDARD:  Factory default setting.
  sRGB:  Suitable for color matching with sRGB-
compliant devices.
  CINEMA:  Suitable for viewing movies.
4 DISPLAY button
Displays the screen information. See page 42. When the remote 
control mode is LOCK, you can set it back to NORMAL by 
holding down the DISPL AY button for at least 5 seconds (see 
page 39).
5 SET button
Accepts the settings made in the OSD menu.
6  MINUS button (-)
Acts as (-) button to decrease the adjustment in the OSD menu. 
When the PIP mode is active, this button moves the sub picture 
to the left.
7  AUTO SETUP button
Displays the auto setup menu. See pages 26 and 35.
8  AUDIO INPUT buttons
Select the audio input from [AUDIO1], [AUDIO2], [AUDIO3], and 
[HDMI]. Note that [VIDEO] and [VIDEO] cannot be selected. 
You can select [HDMI] only when the video input source is 
[RGB1].
9  PIP (Picture-in-Picture) buttons
ON/OFF button:  Switches the PIP or POP mode on/off. 
INPUT button:  Selects video to be displayed in the sub 
picture. 
CHANGE button:  Changes the main picture with the sub 
picture.
[Description]
PIP: Picture-in-Picture
The sub picture is displayed within the main picture. 
POP: Picture-out-Picture
The sub picture is displayed to the bottom right of the main 
picture. 
SIDE BY SIDE
The main picture and the sub picture are displayed side by 
side. 
NOTE: 
When the screen size is [CUSTOM] or [REAL], the PIP and POP 
modes don’t work. 
10 STILL button
ON/OFF button:  Switches the still picture mode on/off. 
CAPTURE button:  Captures the new picture.
11 SIZE button
Selects the picture size from [FULL], [NORMAL], [CUSTOM], 
[DYNAMIC], and [REAL]. See page 42.
12 MENU button
Switches the OSD menu mode on/off.
13  UP button ()
Acts as  button to move the highlighted area up to select 
an adjustment item in the OSD menu. When the PIP mode is 
active, this button moves the sub picture up.
14  PLUS button (+)
Acts as (+) button to increase the adjustment in the OSD menu. 
When the PIP mode is active, this button moves the sub picture 
to the right.
15 EXIT button
Displays the previous OSD menu.
16  DOWN button ()
Acts as  button to move the highlighted area down to select 
an adjustment item in the OSD menu. When the PIP mode is 
active, this button moves the sub picture down.
17 MUTE button
Switches the mute function on/off.
18  VOLUME buttons (VOL)
Pressing the plus (+) side increases the audio output level.
Pressing the minus (-) side decreases the audio output level.
Parts Name and Functions (continued)
Wireless Remote Control
 
						

							English-11
English
O p e r a t i n g R a n g e o f t h e W i r e l e s s R e m ot e 
Control
Point the wireless remote control toward the LCD monitor’s 
remote control sensor during button operation.
Use the wireless remote control within a distance of about 7 m 
from the front of the LCD monitor’s remote control sensor and 
at a horizontal and vertical angle of within 30° within a distance 
of about 3.5 m.
CAUTION: 
The remote control system may not function when direct 
sunlight or strong illumination strikes the remote control sensor 
of the LCD monitor, or when there is an object in the path.
Handling the wireless remote control
*  Do not subject to strong shock.
*  Do not allow water or other liquid to splash on the wireless 
remote control. If the wireless remote control gets wet, wipe 
it dry immediately.
*  Avoid exposure to heat and steam.
*  Other than to install the batteries, do not open the wireless 
remote control.
Parts Name and Functions (continued)
Installing and removing the Wireless 
remote control batteries
The wireless remote control is powered by 1.5 V A A A batteries.
How to install the batteries
1.  Unlock and pull up the cover in the arrow’s direction.
2.  Align the batteries according to the (+) and (-) indications 
inside the case.
3.  Replace the cover.
How to remove the batteries
1.  Unlock and pull up the cover in the arrow’s direction.
2.  Remove the batteries.
CAUTION:
Incorrect use of batteries can result in leaks or explosion.
Be careful especially about the following points.
 Place “A A A” batteries matching the (+) and (-) signs on each 
battery to the (+) and (-) signs of battery compartment.
 Do not mix battery types.
 Do not combine new batteries with used ones. It causes 
shorter battery life or leakage of batteries. 
 Remove dead batteries immediately to prevent battery 
liquid from leaking into the battery compartment. Don’t 
touch exposed battery acid because it causes damage to 
your skin.
NOTE:
If you do not use the wireless remote control for a long period, 
remove the batteries.
How to Use the Wireless Remote Control
 
						

							English-12
Flow of preparation
P-1Preparation for installation
- Determine the installation location
- Ventilation requirements for enclosure mounting Page 13
Carry out as necessary
P-2
P-3
P- 4
P-5
Carry out as necessary
Installing the speakers Installing the monitor
- Installing and removing the stands (The stands are optionally available.)
- Installing the main switch cover
- Using the wall mount or ceiling mount
- Installing in the portrait position
 Pages 14 to 15
 Page 16
 Pages 17 to 21
 Page 22
 Page 23
Connection procedure
- Wiring diagram
- Prevention of disconnection of HDMI cable
- Connecting with a computer (analog connection)
- Connecting with a computer (digital connection)
- Connecting a video device (component video/HDMI device)
- Connecting a video device (composite video/S video device)/stereo ampli er
Connecting the power cord to the monitor
- Connecting the power source
The monitor is ready for use.
How to Use
Preparation for use
 
						

							English-13
English
 P-1   Preparation for installation
This LCD has a temperature sensor and cooling fan. If the LCD 
becomes hot, the cooling fan will turn on automatically. If the 
LCD becomes overheated, the “Caution” menu will appear. 
If the “Caution” menu appears, stop using the monitor and 
allow it to cool. When the LCD monitor is used in an enclosure 
or with protection on LCD surface, please check the inside 
temperature of the monitor by “HEAT STATUS” (See page 40). If 
the temperature is higher than the normal level, set “COOLING 
FAN” to ON using the SCREEN SAVER function (See page 40).
To avoid the monitor from falling
When installing the monitor using the tabletop stands (optional), 
take measures to prevent the monitor from falling over in case 
of an earthquake or other disaster to lessen the probability of 
injury and damage resulting from the fall.
As shown in the  gure, secure the monitor to a solid wall or 
pillar using rope (commercially available) strong enough to bear 
the weight of the monitor. [LDT422V: approximately 23 kg (with 
the optional stands)]
Use of screw hooks (with opening) is recommended.
475 mm
CAUTION:
 The effect of the fall prevention substantially depends 
on the strength of brackets and base to which the fall 
prevention devices is attached. When you cannot ensure 
suf cient strength, provide adequate reinforcement.
 Though the recommended fall prevention is intended to 
lessen the probability of injury and damage, it doesn’t 
assure its effectiveness against any kind of earthquake or 
disaster.
 Do not sleep where the monitor may topple over or fall in 
case of an earthquake or other disaster.
 Before moving the monitor, remove the rope that is 
securing the monitor. Failure to do so may result in injury or 
breakdown of the monitor.
Screw holesScrew hook, etc. 
commercially available
ClamperScrewRope, etc. 
commercially available
Install the monitor on a fl at, level, stable surface where the 
screen is easy to view. 
(For installation using the option stand.)
Determine the installation location
CAUTION:
DO NOT ATTEMPT TO INSTALL THE LCD MONITOR BY 
YOURSELF.
Installing your LCD monitor must be done by a quali ed 
technician. Contact your dealer for more information.
CAUTION:
MOVING OR INSTALLING THE LCD MONITOR MUST BE 
DONE BY TWO OR MORE PEOPLE.
Failure to follow this caution may result in injury if the LCD 
monitor falls.
CAUTION:
Do not mount or operate the monitor upside down, face up, or 
face down.
IMPORTANT:
Lay the protective sheet, which was wrapped around the LCD 
monitor when it was packaged, beneath the LCD monitor so as 
not to scratch the panel.
Ventilation requirements for enclosure mounting
To allow heat to disperse, leave space around the monitor as 
shown in the  gure below.
CAUTION:
The upper limit of the operation guaranteed temperature range 
is 40C. When installing the monitor in a case or an enclosure, 
ensure adequate ventilation to keep the temperature inside 
the case 40C or lower by providing a cooling fan or ventilation 
holes in the case.
 
						

							English-14
 P-2   Installing the monitor  Carry out as necessary
Installing and removing the stands
The stands are available as option.
Refer to the user’s manual of the stand for more information.
How to install the stands
1.  Turn the monitor off.
2.  Fasten screws on both sides of the monitor.
NOTE:
Install the stands so that their longer portions come to the front.
How to remove the stands
1.  Spread the protective sheet on a fl at surface, such as a 
desk.
2.  Place the monitor on the protective sheet.
3.  Remove the screws with a screwdriver and place them in a 
safe place for reuse.
Installing the main switch cover
To prevent unauthorized operation of the main power switch, 
attach the main switch cover, which is supplied as an 
accessory.
NOTE:
With the main power switch cover in place, the main power 
switch cannot be turned off. Remove the main power switch 
cover in order to switch off the monitor.
Screw x 2
(Accessories of 
the option stand)
Option stand x 2
(Longer portion comes to the front.)
Screw x 2 
(Accessory)
Main switch cover 
(Accessory)
Using the wall mount or ceiling mount
Lay the screen face down
Lay the protective sheet on a table, which was wrapped around 
the monitor when it was packaged, beneath the screen surface 
so as not to scratch the screen surface.
This device cannot be used or installed without the Tabletop 
Stand or other mounting accessory. Failure to follow the correct 
mounting procedures can result in damage to the equipment or 
injury to the user or installer. Product warranty does not cover 
damage caused by improper installation.
Failure to follow these recommendations can void your 
warranty.
Use M6 screws (having a length 10 mm longer than the 
thickness of the mounting bracket) and tighten them securely. 
Prevent the screws from loosening using spring washers, etc. 
MITSUBISHI ELECTRIC recommends using mounting interface 
that comply with TÜV-GS and/or UL1678 standard in North 
America.
CAUTION:
For preventing the monitor from falling.
•  Install the monitor with metal brackets for wall or 
ceiling installation (commercially available) on your own 
responsibility. For detailed procedures of installation, refer 
to the instructions of the metal brackets.
•  To lessen the probability of injury and damage resulting 
from fall of the monitor in case of earthquake or other 
disaster, be sure to consult the bracket manufacturer for 
installation location.
•  To lessen the risk of falling of the monitor, thread 
commercially available rope through the handles at the 
right and left of the monitor and secure the rope to the wall 
mount brackets or ceiling mount brackets.
•  Do not sleep where the monitor may topple over or fall in 
case of an earthquake or other disaster.
511. 5 511. 5
10 0
10 010 0
10 0Protective 
Sheet
Ta b l e t o p  S t a n d(mm)
Ta b l e
307
307
10 0 10 0
 
						

							English-15
English
Installing in the portrait position
Conditions:
LDT422V can be installed in the portrait position, under the 
following conditions:
CAUTION:
Portrait position is available only when the monitor is wall-
mounted or ceiling-mounted.
The stands (legs) can not be fi tted to the monitor in the portrait 
position.
Placing the monitor in the portrait position will shorten the 
average life of the LCD backlight.
Operation Environment (Temperature) shall be limited, as 
shown below:
Operation Environment:
Temperature  5 - 35°C / 41 - 95°F
Humidity 20 - 80% (without condensation)
Place the monitor in the position shown below.
Do not place the monitor in landscape in any other manner than 
shown.
Optional speakers (SP-422V ) can not be attached when the 
LCD monitor is installed in the portrait position.
How to set-up
The “
” logo should be on the LEFT side when 
viewed from the front of the monitor.
90° Clockwise
LDT422V
LDT422V logo
 P-2   Installing the monitor (continued)  Carry out as necessary 
Landscape
 
						

							English-16
 To speaker terminal (L)  To speaker terminal (R)  Red(+)/Black(-)Red(+)/Black(-) SPEAKER (S)(L)
SPEAKER (S)(R)
NOTE:
The speaker cord has polarity (+ and -). Match the colors of the speaker terminal and the connector of the cord.
CAUTION:
Do not move the monitor with the speakers installed.
The monitor and the speakers may be damaged and you may be injured if the monitor falls.
Left speakerRight speaker
Before connecting the signal cable to PC and Video
• Optional speakers can be installed.
•  Please refer to user’s guide of the optional speakers for the detailed installation procedure.
How to install the optional speakers
1.  Use the metal fi ttings and screws that are supplied with the option speakers.
2.  Connect the cord of the left speaker to the SPEAKER (S) terminal (L) on the monitor, and the cord of the right speaker to the 
SPEAKER (S) terminal (R).
 P-3   Installing the speakers  Carry out as necessary
 
						

							English-17
English
Prevention of disconnection of HDMI cable
The HDMI cable must be secured by the clamper to prevent it from being disconnected accidentally.
R
B G
H VDVI IN
D-SUB IND-SUB OUTHDMI
RS-232C IN
RS-232C OUTVIDEO IN
VIDEO OUTS-VIDEO
IN1IN2
IN3
OUTR
L
Personal computer
(DVI-D, HDMI)
Personal 
computer
(Analog RGB)LCD monitor (rear)
LCD monitor (second monitor) DVD player (HDMI, BNC)
HD disk player (HDMI)
VCR (RCA)Stereo amplifi er
External speakers
Clamper
(Accessory)
Cable Holder Before making connections
•  First turn off the power of all the connected equipment before making connections.
•  Refer to the user manual of each piece of equipment.
NOTE:
Please use the audio cable without resistance when the audio output terminal of the audio device and PC is stereo mini-Jack.
When the audio cable with resistance is used, the audio level may not be increased or no audio may be output.
Wiring diagram
 P-4  Connection procedure
LCD monitor (fi rst monitor)
 
						

							English-18
RGB cable
(Mini D-SUB 15-pin to 
Mini D-SUB 15-pin)
 To audio output
 To BNC output 
 RGB4 IN (R,G,B,H,V)
BNC cable
(BNC x 5 to BNC x 5)
 RGB3 IN (D-SUB)
 RGB OUT (D-SUB)
 AUDIO IN1 (mini)
 AUDIO OUT (RCA)
Audio cable
(ø 3.5 mm stereo mini)
 RGB3 IN (D-SUB)
 AUDIO IN2 (RCA)
RGB cable
(Mini D-SUB 15-pin to 
Mini D-SUB 15-pin)
RCA cable (audio)
 To D-SUB output 
R
B G
H VDVI IN
D-SUB IND-SUB OUTHDMI
RS-232C IN
RS-232C OUTVIDEO IN
VIDEO OUTS-VIDEO
IN1IN2
IN3
OUTR
L
LCD monitor (rear)
LCD monitor (second monitor)
(Multi-connection)Personal computer
(Analog RGB)Personal computer
(Analog RGB)
LCD monitor (fi rst monitor)
Connecting with a computer (analog connection)
The monitor automatically distinguishes the timings shown in the table below and sets the screen information. When a PC or other 
device is connected, it automatically displays images properly.

ResolutionFrequency
Remarks ResolutionFrequency
Remarks
Horizontal Vertical Horizontal Vertical
1 640 x 480 31.5 kHz 60 Hz 6 1280 x 1024 64.0 kHz 60 Hz
2 800 x 600 37.9 kHz 60 Hz 7 1600 x 1200 75.0 kHz 60 Hz
3 1024 x 768 48.4 kHz 60 Hz 8 1920 x 1080 67.5 kHz 60 Hz Recommend timing
4 1280 x 768 48.0 kHz 60 Hz 9 1920 x 1200 74.0 kHz 60 Hz
5 1360 x 768 47.7 kHz 60 Hz
NOTE:
When a signal other than 1920x1080 is input, characters may be blurred and fi gures and objects may be distorted. 
Images may not be displayed correctly depending on the video card or driver being used.
Analog connection:
•  Connection via RGB3 IN (D-SUB) connector
(1)  Connect an RGB cable (mini D-SUB 15-pin – mini D-SUB 15-pin) (accessory) to the RGB3 IN connector.
(2)  Select [RGB3] using the INPUT button on the monitor or the D-SUB button on the wireless remote control.
•  Connection via RGB4 IN (BNC: R•G•B•H•V, or R•G•B•Csync, RGB sync on green) connector
(1)  Use a BNC cable (BNC x 5 - BNC x 5) (commercially available) to connect the BNC connector on the PC, and use a signal 
cable (mini D-SUB 15-pin - BNC x 5) (commercially available) to connect the mini D-SUB 15-pin connector on the PC.
(2)  Select [RGB4] using the INPUT button on the monitor or the BNC button on the wireless remote control.
Second monitor connection:
•  Connect the RGB OUT connector (mini D-SUB 15-pin) on the fi rst monitor and the RGB3 IN connector (mini D-SUB 15-pin) 
on the second monitor using an RGB cable (mini D-SUB 15-pin - mini D-SUB 15-pin) (an accessory of the second monitor or 
commercially available).
  (The RGB3 or RGB4 signal selected by the fi rst monitor is output. The RGB1 or RGB2 signal isn’t output.)
Audio connection:
•  Connect an audio cable (ø3.5 mm stereo mini) (commercially available) to the AUDIO IN1 connector.
  Select [AUDIO1] using the AUDIO INPUT buttons on the wireless remote control.
•  To output audio to the second monitor: 
  Connect the AUDIO OUT connector on the fi rst monitor and the AUDIO IN2 or 3 connector on the second monitor using an RCA 
cable (audio) (commercially available).
 P-4   Connection procedure (continued)
 
						

							English-19
English
 RGB2 IN (DVI-D) RGB1 IN (HDMI) AUDIO IN1 (mini)
DVI-D cable
HDMI cable
 To DVI-D output 
 To HDMI output 
 Audio output 
Audio cable
(ø3.5 mm stereo mini)
R
B G
H VDVI IN
D-SUB IND-SUB OUTHDMI
RS-232C IN
RS-232C OUTVIDEO IN
VIDEO OUTS-VIDEO
IN1IN2
IN3
OUTR
L
Personal computer
(DVI-D, HDMI)
LCD monitor (fi rst monitor)
Connecting with a computer (digital connection)
Digital connection:
•  Connection via the RGB1 IN connector (HDMI)
(1)  Connect an HDMI cable (commercially available) to the RGB1 IN connector. 
(2)  Select [RGB1] using the INPUT button on the monitor or the HDMI button on the wireless remote control. 
•  Connection via the RGB2 IN connector (DVI-D)
(1)  Connect a DVI-D cable (commercially available) to the RGB2 IN connector. 
(2)  Select [RGB2] using the INPUT button on the monitor or the DVI-D button on the wireless remote control. 
Audio connection: 
•  Connect an audio cable (ø3.5 mm stereo mini) (commercially available) to the AUDIO IN1 connector. 
  Select [AUDIO1] using the AUDIO INPUT buttons on the wireless remote control.
  When an HDMI cable is connected, select HDMI audio.
  (You can select HDMI only when the video input is [RGB1].) 
LCD monitor (rear)
 P-4   Connection procedure (continued)