Mitsubishi BH548, BJ544, LDT321V, LDT37IV User Manual

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Index

Important Information ................................................................................................................................... English-2

Safety Precautions, Maintenance & Recommended Use ............................................................................ English-4

Contents ....................................................................................................................................................... English-5

Parts Name and Functions .......................................................................................................................... English-6

Control Panel .................................................................................................................................. English-6

Terminal Panel ................................................................................................................................ English-7

Wireless Remote Control ............................................................................................................... English-8

Operating Range for the Remote Control ....................................................................................... English-9

Handling the remote control ........................................................................................................... English-9

Setup Procedure .......................................................................................................................................... English-10

How to Mount and Attach Options to the LCD Monitor ................................................................................ English-12

Connections ................................................................................................................................................. English-13

Wiring Diagram ............................................................................................................................... English-13

Connecting a Personal Computer .................................................................................................. English-14

Connecting with Digital Interface Equipment .................................................................................. English-15

Connecting a DVD Player with component out ............................................................................... English-16

Connecting to a Stereo Amplifier .................................................................................................... English-17

Basic Operation............................................................................................................................................ English-18

Power ON and OFF Modes ............................................................................................................ English-18

Power Indicator ............................................................................................................................... English-19

Using Power Management ............................................................................................................. English-19

Selecting a video source ................................................................................................................ English-19

Picture Size .................................................................................................................................... English-19

Picture Mode .................................................................................................................................. English-19

Information OSD ............................................................................................................................. English-19

OSD (On-Screen-Display) Controls ............................................................................................................. English-20

PICTURE ........................................................................................................................................ English-20

SCREEN......................................................................................................................................... English-21

AUDIO ............................................................................................................................................ English-22

PICTURE IN PICTURE .................................................................................................................. English-23

CONFIGURATION 1 ....................................................................................................................... English-23

CONFIGURATION 2 ....................................................................................................................... English-25

ADVANCED OPTION ..................................................................................................................... English-26

NOTE.............................................................................................................................................. English-27

Controlling the LCD monitor via RS-232C Remote Control ......................................................................... English-29

Features ....................................................................................................................................................... English-31

Troubleshooting ........................................................................................................................................... English-32

Specifications (LDT321V) ............................................................................................................................ English-33

Specifications (LDT371V) ............................................................................................................................ English-34

Pin Assignment ............................................................................................................................................ English-35

English

English-1

Important Information

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 - [phone]

Type of Product: Computer Monitor
Equipment Classification: Class B Peripheral
Model: LDT321V (BH548) / LDT371V (BJ544)

We hereby declare that the equipment specified above

conforms to the technical standards as specified 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.

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 specified cables with the LDT321V (BH548) / LDT371V (BJ544) color monitor so as not to interfere
with radio and television reception.
(1) Please use the supplied power cord or equivalent to ensure FCC compliance.
(2) Please use the supplied shielded video signal cable, 15-pin mini D-SUB to 15-pin mini D-SUB.

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.

If necessary, the user should contact the dealer or an experienced radio/television technician for additional suggestions.
The user may find the following booklet, prepared by the Federal Communications Commission, helpful: “How to Identify
and Resolve Radio-TV Interference Problems.” This booklet is available from the U.S. Government Printing Office, Wash­ington, D.C., 20402, Stock No. 004-000-00345-4.

English-2

Important Information

WARNING

TO PREVENT FIRE OR SHOCK HAZARDS, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. ALSO, DO NOT USE
THIS UNIT’S POLARIZED 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.

CAUTION

English

CAUTION

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 sufficient 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.

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).

Declaration

We hereby certify that the color monitor LDT321V(BH548)/
LDT371V(BJ544) is in compliance with
Council Directive 73/23/EEC:

– EN 60950-1

Council Directive 89/336/EEC:

– EN 55022
– EN 61000-3-2
– EN 61000-3-3
– EN 55024

CAUTION

Declaration of the Manufacturer

and marked with

Mitsubishi Electric Corporation

2-7-3, Marunouchi,

Chiyoda-Ku

Tokyo 100-8310, Japan

Declaration of the Manufacturer

Note: This symbol mark is EU countries only.
This symbol mark is according to the directive 2002/96/EC Article 10 Information for
users and Annex IV.
Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality
materials and components which can be recycled and reused.

This symbol means that electrical and electronic equipment, at their end-of-life, should be disposed of
separately from your household waste.
Please, dispose of this equipment at your local community waste collection/recycling center.
In the European Union there are separate collection systems for used electrical and electronic product.
Please, help us to conserve the environment we live in!

English-3

Safety Precautions, Maintenance & Recommended Use

FOR OPTIMUM PERFORMANCE, PLEASE NOTE

THE FOLLOWING WHEN SETTING UP AND USING

THE LCD COLOR MONITOR:

• DO NOT OPEN THE MONITOR. 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 qualified 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, fire or
equipment failure.

• Do not place any heavy objects on the power cord.
Damage to the cord may cause shock or fire.

• 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 an AC 100-120V
power supply in North America, use a power supply cord
provided with this monitor.

• When operating the LCD monitor with an AC 220-240V
power supply in Europe, use a power supply cord provided
with this monitor.

• In UK, use a BS-approved power cord with molded plug
having a black (10A) 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 220-240V AC
power supply in Australia, use the power cord provided
with this monitor.
If a power cord is not supplied with this monitor, please
contact your supplier.

• For all othercase, 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 fluorescent tube located within the LCD
monitor contains mercury. Please follow the laws 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.

• 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 battery first inside the case.

CAUTION

Immediately unplug your monitor from the wall outlet and refer
servicing to qualified 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.

Recommended 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 reflections.

• Clean the LCD monitor surface with a lint-free, non­abrasive cloth. Avoid using any cleaning solution or glass
cleaner!

• Adjust the monitor’s brightness, contrast and sharpness
controls to enhance readability.

• Avoid displaying fixed 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 benefits, 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 difficult to see and may produce eye fatigue due to

insufficient contrast.

English-4

Contents

Your new LDT321V/LDT371V monitor box* should contain the follow­ing:

• LCD monitor

• Power Cord (3m)

• Video Signal Cable (4m)

• User’s Manual

• Wireless Remote Control and AAA Batteries

• Clamper x 2

• Screw for Clamper x 2

• Main switch cover

• Screw for Main Switch cover x 2

• Cable Holder

English

Main switch cover Cable Holder

* The supplied power cord varies depending on destination.

For EU For UK For North

Power cord

* For all other case, 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.

America

User’s Manual

Screw for Main switch cover

(M3 x 10) x 2

Clamper x 2

Wireless Remote Control

Video Signal Cable

(D-SUB to D-SUB Cable)

Screw for Clamper

(M4 x 8) x 2

and AAA Batteries

*Remember to save your original box and packing material to transport or ship the monitor.

The following components are prepared as option.

• External Speakers

English-5

Parts Name and Functions

Control Panel

9

OFF

EXIT MUTEINPUT

8 1234

67

ON

5

POWER button ( )

Switches the power on/off. See also page 18.

MUTE button

Switches the audio mute ON/OFF.

INPUT button

Acts as SET button with OSD menu.
(Toggle switches between [RGB1], [RGB2], [RGB3], [DVD/HD],
[VIDEO<S>] and [VIDEO] .)

PLUS (+) button

Acts as (+) button to increase the adjustment with OSD menu.
Increase the audio output level when the OSD menu is turned
off.

MINUS (-) button

Acts as (-) button to decrease the adjustment with OSD menu.
Decreases the audio output level when the OSD menu is
turned off.

UP ( ) button

Activates the OSD menu when the OSD menu is turned-off.
Acts as button to move the highlighted area up to select the
adjustment with OSD menu.

11

10

Button Location

EXIT button

Activates the OSD menu when the OSD menu is turned-off.
Acts as EXIT button to move to previous menu with OSD
menu.

Remote control sensor and Power indicator

Receives the signal from the remote control (when using the
wireless remote control). See also page 9.
Glows green when the LCD monitor is in active and glows red
when the LCD is in POWER OFF mode. When the LCD is in
power save mode, it will glow both green and red. When
SCHEDULE is enabled, it willl blink green and glow red. See
page 19. In the case of where a failure is detected, it will blink
red.

Main Power Switch (LDT371V)
Main Power Switch (LDT321V)

On/Off Switch to turn main power on/off.

NOTE: Control Key Lock Mode

This control completely locks out access to all Control Key
functions. To activate the control key lock function, press both
of “ “ and “ “ and hold down simultaneously for more than 3
seconds. To resume back to user mode, press both of “ “ and
“ “ and hold simultaneously for three (3) seconds.

DOWN ( ) button

Activates the OSD menu when the OSD menu is turned-off.
Acts as button to move the highlighted area down to select
the adjustment with OSD menu.

English-6

Terminal Panel

AC IN Speaker

AC IN

Speaker

OUT

OUT

OUT

AUDIO

32

English

Pb/Cb Pr/Cr

OUT

IN

S-VIDEO

IN

IN

1

YRGBHV

RGB3DVD/HD

R

R

L

L

VIDEO

AC IN connector

Connects with the supplied power cord.

RGB 1 IN (DVI-D)

To input digital RGB signals from a computer.
* This connector does not support analog input.

RGB 2 IN (mini D-Sub 15 pin)

To input a analog RGB signals from a computer or other RGB
equipment.

RGB 3 IN [R, G, B, H, V] (BNC)

To input the analog RGB signals from a computer or other
RGB equipment.

RGB OUT (mini D-Sub 15 pin)

To output the signal from RGB 2 IN or 3 IN.

DVD/HD IN [Y, Pb/Cb, Pr/Cr] (BNC)

Connecting equipment such as a DVD player, HDTV device, or
Laser disc player.

RS-232C

RGB1

RGB OUT

RGB2

AUDIO IN 1, 2, 3

To input audio signal from external equipment such as a
computer, VCR or DVD player.

AUDIO OUT

To output the audio signal from the AUDIO IN 1,2 and 3 jack.

VIDEO IN/OUT

VIDEO IN connector (BNC and RCA): To input a composite

video signal. BNC and RCA are not available at the same
time.
(Use only one input).
VIDEO OUT connector (BNC): To output the composite
video signal from VIDEO IN connector.
S-VIDEO IN connector (MINI DIN 4 pin): To input the S­video (Y/C separate signal).

EXTERNAL CONTROL (mini D-Sub 9 pin)

Use when operating the LCD monitor from RGB equipment
like a computer. See page 29.

EXTERNAL SPEAKER TERMINAL

To output the audio signal for external speakers from AUDIO
1, 2 or 3 jack.

English-7

Wireless Remote Control

POWER button

Switches the power on/off.
* If Power Indicator is not glowing, then no controls will work.

INPUT button

Selects from input signal, [RGB1], [RGB2], [RGB3], [DVD/
HD], [VIDEO<S>] and [VIDEO].

AUDIO INPUT button

Selects from input audio signal, [AUDIO1], [AUDIO2],
[AUDIO3]

SIZE button

Selects picture size, [FULL], [NORMAL], [CUSTOM] , [DY­NAMIC] and [REAL]. See page 19.

PICTURE MODE button

Selects from picture mode, [HIGHBRIGHT], [STANDARD],
[sRGB], [CINEMA]. See page 19.

HIGHBRIGHT: for moving image such as DVD
STANDARD: for images (Factory setting)
sRGB: for text based images
CINEMA: for movies.

MUTE button

To switch the mute function on/off.

VOLUME UP button

Increase the audio output level.

VOLUME DOWN button

Decrease the audio output level.

PIP (Picture In Picture) button

ON/OFF button: PIP-ON/OFF.
See page 23.
INPUT button: Select the ‘picture in picture’ input signal.
CHANGE button: Replaces to the main picture and sub
picture.

Note: The "PIP" and "POP" modes do not function when

the screen size is "CUSTOM" or "REAL"

STILL button

ON/OFF button: To switch the still picture mode on/off.
CAPTURE button: Updates the still picture.

DISPLAY button

To switch the information OSD on/off. See page 19.

AUTO SETUP button

To enter the auto setup menu. See page 23.

MENU button

To switch the menu mode on/off.

UP button

Acts as button to move the highlighted area up to select
the adjustment with OSD menu.
Small screen which adjusted “PIP” mode moves up.

DOWN button

Acts as button to move the highlighted area down to
select the adjustment with OSD menu.
Small screen which adjusted “PIP” mode moves down.

MINUS button decrease

Acts as (-) button to decrease the adjustment with OSD
menu.

Small screen which adjusted “PIP” mode moves left.

PLUS button increase

Acts as (+) button to increase the adjustment with OSD
menu.

Small screen which adjusted “PIP” mode moves right.

SET button

Acts as SET button with OSD menu.

EXIT button

Turn to previous menu with OSD menu.

English-8

Operating Range for the Remote Control

Handling the remote control

Point the top of the remote control toward the LCD monitor's
remote sensor during button operation.
Use the remote control within a distance of about 7 m/23 ft. 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 m/10 ft.

30o30

o

* Do not subject to strong shock.

* Do not allow water or other liquid to splash the remote

control. If the remote control gets wet, wipe it dry immedi­ately.

* Avoid exposure to heat and steam.

* Other than to install the batteries, do not open the remote.

English

Caution

Important, 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.

English-9

Setup Procedure

1. Determine the installation location

CAUTION: DO NOT ATTEMPT TO INSTALL THE LCD MONI-

TOR BY YOURSELF.
Installing your LCD display must be done by a qualified
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 display upside down,

face up, or face down.

CAUTION: Portrait use is not guaranteed for this product.
CAUTION: Do not install the LCD monitor where it will be

exposed to direct sunlight, as this will result in

display defects.
CAUTION: This LCD has a temperature sensor and cooling

fan. If the LCD becomes too hot, the cooling fan

will turn on automatically. If the LCD becomes

overheated and the cooling fan is running, the

“Caution” menu will appear. If the “Caution” menu

appears, discontinue use and allow the unit to cool.

When the LCD monitor is used in an enclosure or

with protection on LCD surface, please check the

inside temperature of monitor by “HEAT STATUS”

(See page 27). The temperature is too hot than

normal condition, please set “cooling fan” to ON on

SCREEN SAVER function (See page 24).

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.

3. Connect external equipment (See page

13-17)

• To protect the connected equipment, turn off the main power
before making connections.

• Refer to your equipment user manual.

4. Connect the supplied power cord

• The power outlet socket should be installated as near to the
equipment as possible, and should be easily accessible.

• Fully insert the prongs into the power outlet socket. Loose
connection may cause noise.

NOTE: Please refer to “Safety Precautions, Maintenance &

Recommended Use” section of this manual for proper
selection of AC power cord.

Cable Holder

2. Install the remote control batteries

The remote control is powered by 1.5V AAA batteries. To install
or replace batteries:

1. Press and slide to open the cover.

2. Align the batteries according to the (+) and (–) indications
inside the case.

3. Replace the cover.

CAUTION

Incorrect use of batteries can result in leaks or bursting.
Be careful especially about the following points.

• Place "AAA" batteries matching the + and - signs on each
battery to the + and - signs of the 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, it cause damage to your skin.

NOTE: If you do not intend to use the Remote Control for a long

period, remove the batteries.

English-10

5. Switch on the power of all the attached

external equipment

When connected with a computer, switch on the power of the
computer first.

6. Operate the attached external equipment

Display the signal on the external equipment you wish.

7. Adjust the sound

Make adjustments when adjustment of the volume is required.

8. Adjust the screen (See pages 20-28)

Make adjustments when adjustment of the screen display
position or distortion is required.

9. Adjust the image (See page 20-28)

Make adjustments when adjustment such as the brightness or
contrast is required.

10. Recommended Adjustment

To reduce the risk of “image persistence”, please adjust the
following items based on the application being used.
“POWER SAVE” (See page 23), “SCREEN SAVER” (See
page 24), “SIDE BORDER COLOR”(See page 24), “DATE
& TIME” (See page 27), “SCHEDULE”(See page 27).

11. Installing and removing stand

How to install stand

1. Please turn monitor off.

2. After inserting stand in guide block, fasten M6 x 16
screws on both sides of the monitor.

How to remove the stand

1. Spread the protective sheet on the flat surface, such as
a desk.

2. Place monitor on the protective sheet.

3. Remove screws with a screwdriver and place them in a
safe place for reuse.

12. To prevent the main power switch

from being changed

To prevent the ability to use the main power switch, please
attach the main switch, which is enclosed as an accessory.

NOTE: With the main power switch cover in place, the main

power switch can not be turned off. Remove main
power switch cover in order to switch off the display.

English

screws

Screw

Main switch cover

Main switch cover installation example (LDT371V)

stands

English-11

How to Mount and Attach Options to the LCD Monitor

You can attach mounting accessories to the LCD monitor in
one of the following two ways:

1. In the upright position

2. Lay the screen face down

Protective Sheet

3. Ventilation Requirements for enclosure

mounting

To allow heat to disperse, leave space between surround­ing objects as shown in the diagram below.

4. To avoid falling down

Fasten the LCD monitor to wall using a cord or chain,
which is sufficient to support the weight of the LCD monitor
(LDT321V: approx. 17.5kg / LDT371V: approx. 22kg).

Ta bl e

Tabletop Stand

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 face.
This device cannot be used or installed without the Tabletop Stand
or other mounting accessory. Failure to follow correct mounting
procedures could 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 could result in voiding
your warranty.
When using with other mounting accessory, it must be a VESA­compatible mounting method and the screws must be M6 of size
and 10mm or longer of length under consideration of the thick­ness of the mounting method. (Recommended torque: 470 ­635N•cm). MITSUBISHI ELECTRIC recommends using mount­ing interface that comply with TÜV-GS and/or UL1678 standard
in North America.

See diagram below.

Screw Holes

Cord or Chain

Clamper

LDT321V: 360mm
LDT371V: 462mm

Before moving the LCD monitor, the cord or chain should
be removed.

Screw

English-12

Connections

Before making connections:

* First turn off the power of all the attached equipment and make connections.
* Refer to the user manual included with each separate piece of equipment.

Wiring Diagram

Wiring Diagram

English

English-13

Connecting a Personal Computer

Connecting your computer to your LCD monitor will enable you to display your computer's screen image.

Some video cards may not display an image correctly.

Connect the LCD Monitor to a Personal Computer

• To connect the RGB 2 IN connector (mini D-sub 15 pin) on the LCD monitor, use the supplied PC - Video RGB signal cable
(mini D-sub 15 pin to mini D-sub 15 pin).

• To connect the RGB 3 IN connector (BNC) on the LCD monitor, use a signal cable which is available separately (mini D­sub 15 pin to BNC x 5). Select RGB 3 from the INPUT button.

• When connecting one or more LCD monitors, use the RGB OUT connector (mini D-sub 15 pin).

• The AUDIO IN 1, 2 and 3 can be used for audio input. For connection, select AUDIO 1, 2 or 3 from the AUDIO INPUT button.

• The AUDIO OUT jack outputs sound from the selected Audio input.

PC or IBM compatible

To analog RGB output

Mini D-sub 15 pin

Mini D-sub 15 pin

BNC x 5

To audio output

To audio right output

To audio left output

Mini D-sub 15 pin

English-14

LCD monitor (second monitor)

Connecting with Digital Interface Equipment

Connections can be made with equipment that is equipped with a digital interface compliant with the DVI (Digital Visual Interface)
standard.

Connect the LCD Monitor to a Computer with a Digital Output

• The RGB 1 IN connector also accepts a DVI-D cable.

• Input TMDS signals conforming to DVI standards.

• To maintain display quality, use a cable with a quality prescribed by DVI standards. (See 27 page “DVI-MODE” )

• The AUDIO IN 1, 2 and 3 can be used for audio input. For connection, select AUDIO 1, 2 or 3 from the AUDIO INPUT button.

• The signal input from DVI-D connector cannot be output to the RGB OUT connector.

Monitor

English

To audio output

English-15

Connecting a DVD Player with component out

Connecting your DVD player to your LCD monitor will enable you to display DVD video.
Refer to your DVD player owner’s manual for more information.

Connect the LCD Monitor to a DVD Player

• To connect the DVD/HD In connector (BNC) on the LCD monitor, use a separately available BNC connector cable. You will need

a BNC-to-RCA adapter to connect a DVD player with an RCA pin jack to the BNC connector cable (not provided).

• The AUDIO IN 2 and 3 (both RCA) can be used for audio input. For connection, select [AUDIO 2] or [AUDIO 3] from the AUDIO

INPUT button.

Monitor

BNC-to-RCA

adapter BNC x 3

To audio left output

To DVD Component video output

DVD Player

To audio right output

BNC x 3

RCA

English-16

Connecting to a Stereo Amplifier

You can connect your stereo amplifier to your LCD monitor. Refer to your amplifier owner's manual for more information.

Connect the LCD Monitor to a Stereo Amplifier

• Turn on the LCD monitor and the amplifier only after all connections have been made.

• Use an RCA cable to connect the AUDIO OUT connector (RCA) on the LCD monitor and the audio input on the amplifier.

• Do not reverse the audio left and right jacks.

• The AUDIO IN 2 and 3 (both RCA) can be used for audio input. For connection, select [AUDIO2] or [AUDIO3] from the AUDIO
INPUT button.

• The AUDIO OUT jack outputs sound from the selected Audio input.

Monitor

VCR or CD player

To audio right output

To composite Output

In case of VCR

To audio left output

English

LCD monitor (second monitor)

BNC

BNC

To audio right output

RCA

RCA

To audio left output

English-17

External speakerExternal speaker

Basic Operation

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:

LDT321V

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.

LDT371V

Main Power Switch

Main Power Switch

2. Pressing the power button.

NOTE: Before pressing the power button, be sure to turn

on the Main Power button on the LCD monitor.

Power Button

3. Using the remote control

NOTE: Before operating the remote control, be sure to

turn on the Main Power Switch on the LCD monitor.

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Power Indicator

Power ON

Power OFF Red

Power Standby when

“SCHEDULE” is enable

Power Standby Red, Green
Diagnosis (Detecting failure) Red Blinking

Power Indicator

Status

Green

Red On

Green Blinking

* See troubleshooting on page 32

Using Power Management

NORMAL: Display by the inputed signal aspect ratio by PC
signal, or display in 4:3 aspect ratio at 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 activ

REAL: Image will be displayed 1 by 1 pixel.

ZOOM

e diaplay area is not displayed.

English

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 fixed 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

RGB 1, 2, 3 FULL

DVD/HD, VIDEO FULL

NORMAL

NORMAL DYNAMIC CUSTOM REAL

CUSTOM REAL

ZOOM

Picture Mode

RGB 1, 2, 3 HIGHBRIGHT STANDARD sRGB

DVD/HD, VIDEO HIGHBRIGHT STANDARD CINEMA

Information OSD

RGB1, 2, 3

RGB2
1024 x 768
48kHz 60Hz
AUDIO : 1
SIZE : FULL

DVD/HD

DVD/HD
AUDIO : 3
SIZE : FULL

Video Input mode
Input signal Information

)

Audio input mode
Picture Size mode

Video Input mode
Audio input mode
Picture Size mode

Signal Type

4:3

Squeeze

NORMAL SIZE Recommended Siz

NORMAL

DYNAMIC

FULL

e

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VIDEO<S>, VIDEO

VIDEO<S>
NTSC
AUDIO : 3
SIZE : NORMAL

PIP or POP

Main:RGB2
Sub:VIDEO<S>

RGB2
1024 x 768
48kHz 60Hz
AUDIO : 1
VIDEO<S>
NTSC
SIZE : FULL

Video Input mode
Input Signal Colour System mode
Audio input mode
Picture Size mode

Main picture Information

Sub picture Information

)

Main picture Information

OSD (On-Screen-Display) Controls

Remote Control

Control Panel

OSD screen

Press MENU button to
open Main menu. Press
UP or DOWN button to
select sub-menu.

Press EXIT button to
open Main menu.
Press UP or DOWN
button to select.

UP or DOWN button INPUT button

Press SET button
to decide.

SET

Press INPUT button to
decide

INPUT

Press UP or DOWN, and PLUS or
MINUS button to select function, or
control which you like.
Press SET button to decide.

Press UP or DOWN, and
PLUS or MINUS button to
select function, or control
which you like. Press INPUT
button to decide

“-” “+” button EXIT button

Press MENU or
EXIT button to exit.

Press EXIT button to
exit.

EXIT

Main-Menu

PICTURE

BRIGHTNESS

CONTRAST

SHARPNESS

BLACK LEVEL

Sub-Menu

Adjusts the overall image and background
screen brightness.

Press + button to increase brightness.
Press - button to decrease brightness.

Adjusts the image brightness in relation to the
input signal.
Press + button to increase contrast.
Press - button to decrease contrast.
NOTE: sRGB picture mode is standard and
cannot be changed.

This function is digitally capable to keep crisp
image at any timings. It is adjustable to get a
distinct image or a soft one as you prefer and
set independently for each picture mode.
Press + button to increase sharpness.
Press - button to decrease sharpness.

Adjusts the image brightness in relation to the
background.
Press + button to increase black level.
Press - button to decrease black level.
NOTE: sRGB picture mode is standard and
cannot be changed.

NOISE REDUCTION

*:INPUT VIDEO<S>,

VIDEO only

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Adjusts the noise reduction level.

Press + button to increase reduction level.
Press - button to decrease reduction level.

TINT

*:INPUT DVD/HD, VIDEO<S>,

VIDEO only

COLOR

*:INPUT DVD/HD, VIDEO<S>,

VIDEO only

COLOR TEMPERATURE

COLOR CONTROL

*:INPUT RGB1,2,3 only

PICTURE RESET

Adjust the tint of the screen.
Press + button the flesh tone color becomes
greenish.
Press - button the flesh tone color becomes
purplish.

Adjust the color of the screen.

Press + button to increase color depth.
Press - button to decrease color depth.

Color temperature can be selected out of
5000K, 6500K and 9300K.
When USER is selected, R.G.B can be
adjusted individually.(RGB 1,2,3 only)

R, G, B: Increases or decreases Red,Green,
and Blue depending upon which is selected.
The change in color will appear on screen and
the direction (increase or decrease) will be
shown by the color bars.
NOTE: It can be adjusted only when USER
is selected by COLOR TEMPERATURE.

Selecting Picture reset allows you to reset all
OSD settings about PICTURE setting.
Select "Yes" and press "SET" button to restore
to factory preset data.
Press "EXIT" button to cancel and then return
to the previous menu.

English

Main-Menu

SCREEN

Sub-Menu

H POSITION

V POSITION

CLOCK

*:INPUT RGB2/3 only

CLOCK PHASE

*:INPUT RGB2/3 only

Controls Horizontal Image position within the
display area of the LCD.

Press + button to move screen to right.
Press - button to move screen to left.

Controls Vertical Image position within the
display area of the LCD.

Press + button to move screen to UP.
Press - button to move screen to DOWN.

Press + button to expand the width of the
image on the screen the right.
Press - button to narrow the width of the image
on the screen the left.

Improves focus, clarity and image stability by
increasing or decreasing this setting.

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ZOOM MODE

CUSTOM ZOOM

H RESOLUTION

*:INPUT RGB1/2/3 only

V RESOLUTION

*:INPUT RGB1/2/3 only

You can select “FULL”, “NORMAL” and
“CUSTOM” and "REAL". (INPUT RGB1/2/3
only) You can also select “FULL”, “NORMAL”
“DYNAMIC” and “CUSTOM” and "REAL".
(INPUT DVD/HD, VIDEO<S>, VIDEO only)
Selecting “DYNAMIC” will make the screen
display panoramic with the expansion of the
middle and outside of the screen changed. (The
upper and the bottom of the image will be cut by
expansion.)
Dynamic image is the same as FULL size
image when HDTV signal is input.
Selecting "REAL" image will be displayed 1 by 1
pixel.

“CUSTOM ZOOM” will be selected when you
select “CUSTOM” on the screen “ZOOM”
mode.
ZOOM: expands the horizontal and the vertical
size simultaneously.
HZOOM: expands the horizontal size only.
VZOOM: expands the vertical size only.
H POSITION: moves to the right with + button.
moves to the left with – button.
V POSITION: moves up with + button.
moves down with – button.

Adjusts the horizontal size by increasing or
decreasing the setting.
Press + button to expand the width of the
image on the screen.
Press - button to narrow the width of the image
on the screen.

Adjusts the vertical size by increasing or
decreasing the setting.
Press + button to expand the height of the
image on the screen.
Press - button to narrow the height of the image
on the screen.

SCREEN RESET

Main-Menu

AUDIO

BALANCE

TREBLE

BASS

Sub-Menu

Selecting Screen reset allows you to reset all
OSD settings from PICTURE setting.
Select "Yes" and press "SET" button to restore
the factory preset data.
Press "EXIT" button to cancel and then return to
the previous menu.

Adjust the balance of L/R volume.
Press + button to move the stereo sound image
to right.
Sound of the left side will be small.
Press - button to move the stereo sound image
to left.

To accentuate or reduce the high frequency
sound.
Press + button to increase TREBLE sound.
Press - button to decrease TREBLE sound.

To accentuate or reduce the low frequency
sound.
Press + button to increase BASS sound.
Press - button to decrease BASS sound.

AUDIO RESET

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Selecting Audio reset allows you to reset all OSD
settings from AUDIO setting.
Select "YES" and press "SET" button to restore
the factory preset.
Press "EXIT" button to cancel and then return to
the previous menu.

Main-Menu

PIP(PICTURE IN PICTURE)

Note: The "PIP" and "POP" modes do not function when the screen size is "CUSTOM" or "REAL".

Sub-Menu

Selecting the size of picture inserted at the
"Picture-in-Picture" (PIP) mode.

PIP SIZE

PIP AUDIO

PIP RESET

Main-Menu

"Large", "Middle" and "Small" are available.

Selecting the sound source in PIP mode.
When selecting "MAIN AUDIO", you will get the
sound for the main picture and when selecting
"PIP AUDIO", you will get the sound for the
picture instead.

Selecting PIP Reset allows you to reset all
OSD settings from PIP setting.
Select "Yes" and press "SET" button to restore
the factory preset data.
Press "EXIT" button to cancel and then return
to the previous menu.

CONFIGURATION 1

English

Sub-Menu

AUTO SETUP

*:INPUT RGB2/3 only

AUTO ADJUST

*:INPUT RGB2/3 only

POWER SAVE

LANGUAGE

Press "SET" button to automatically adjust
screen size, horizontal position, vertical
position, clock, clock phase, white level and
black level.
Press "EXIT" button to cancel execution AUTO
SETUP and then will return to the previous
menu.

Selecting the auto adjust ON/OFF.
Selecting ON when changing the timing, the
horizontal position, vertical position and clock­phase will adjust automatically.

Selecting RGB "ON", the monitor will go to
power management mode when RGB1,2,3
sync is lost. Selecting VIDEO "ON", the
monitor will go to power management mode
after about 10 minutes delay from when
DVD/HD and VIDEO input signal is lost.

OSD control menus are available in seven
languages.

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SCREEN SAVER

COLOR SYSTEM

*:INPUT VIDEO<S>,

VIDEO only

Select "SCREEN SAVER" functions to reduce
the risk of the "image persistence".
GAMMA: The display gamma is changed and
fixed when selected "ON".
COOLING FAN: The built in cooling fan is
always on when set "ON".
BRIGHTNESS: The brightness is decreased
when selected "ON".
MOTION: Image is slightly expanded and
moves 4 directions (UP, DOWN, RIGHT,
LEFT) periodically (Need setting the time for
movement).
Movement area is approximately +/- 10mm
from original position; Please locate the
important information such as text within 90%
area of screen image.
See note (1) for this functions.
PIP and STILL will be disabled when
"MOTION" is active.

Selecting the Color System depends on your
input video format.
AUTO: NTSC, PAL, SECAM, PAL60 or 4.43
NTSC is automatically selected.
NTSC: Specific selection of NTSC.
PAL: Specific selection of PAL.
SECAM: Specific selection of SECAM.
PAL-60: Specific selection of PAL60.

4.43NTSC: Specific selection of 4.43 NTSC.

SIDE BORDER

COLOR

CONFIGURATION

RESET

FACTORY RESET

Selecting the side black bar color white when
4:3 image displayed, you can select OFF, 50
and 100.

Selecting the CONFIGURATION RESET allows
you to reset all configuration settings.
Select "Yes" and press "SET" button to restore
the factory preset data.
Press "EXIT" button to cancel and return the
previous menu.

Selecting "YES" allows you to reset PICTURE,
SCREEN, AUDIO, CONFIGURATION1,2 and
ADVANCED OPTION will be back to factory
settings (except LANGUAGE, DATE & TIME
and SCHEDULE). Select "YES" and press
"SET" button to restore the factory preset
data. Press "EXIT" button to cancel and
return the previous menu.

English-24

Main-Menu

CONFIGURATION 2

Sub-Menu

OSD TURN OFF

INFORMATION OSD

OFF TIMER

OSD H POSITION

OSD V POSITION

The OSD control menu will stay on as long as
it is use. In the OSD Turn Off submenu, you
can select how long the monitor waits after the
last touch of a button to shut off the OSD
control menu. The preset choices are 5 -120
seconds.

Selects the information OSD display or not. The
information OSD will display when input signal
or source change or warning message like as
no-signal or out-of range.
A time between 1 to 10 seconds is available.

To select OFF TIMER mode ON/OFF.
In the OFF TIMER menu, you can preset the
monitor to automatically power down.
A time between 1 to 24 hours is available.
When the OFF TIMER is set, the SCHEDULE
(see page 28) settings will be disabled.

Adjusts the horizontal position of the OSD
menu.

Adjusts the vertical position of the OSD menu.

English

MONITOR INFORMATION

Indicates the model and serial number of your
monitor.

English-25

Main-Menu

ADVANCED OPTION

Sub-Menu

INPUT RESOLUTION

*:INPUT RGB2/3 only

BLACK LEVEL

EXPANSION

*:INPUT VIDEO<S>,

VIDEO only

GAMMA SELECTION

SCAN MODE

*:INPUT DVD/HD

VIDEO<S>, VIDEO

only

SCAN CONVERSION

*:INPUT DVD/HD

VIDEO<S>, VIDEO

only

FILM MODE

*:INPUT DVD/HD

VIDEO<S>, VIDEO

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

Selects a level of black expansion.
In case of go under the black cut-off level,
please adjust the "Black level" in moderation
on OSD menu.

Selects a display gamma.

2.2

2.4
S gamma
Native
NOTE: sRGB picture mode is standard and
cannot be changed.

Changes the display area of the image.
OVERSCAN: Set to display area about 95%
UNDERSCAN: Set to display area about
100%

Selects IP (Interlace to Progressive) converter
function. PROGRESSIVE: Enable the IP
function, to convert interlace signal to
progressive. Normally use this setting.
INTERLACE*: Disable the IP function.
*NOTE: This mode is better suited for motion
pictures, but it is in danger of image retention.

Selects Film mode function.
AUTO: Enable the Film mode function. This
mode is better suited for movies, which is
converted 24 Frames/sec source to DVD Video.
We recommend to select "PROGRESSIVE" in
"SCAN CONVERSION".
OFF: Disable the Film mode function. This mode
is better suited for Broadcasting or VCR source.

IR CONTROL

TILING

English-26

Selects the infrared wireless remote controller
mode.
The item in this menu will become effective by
pressing "SET" button on the selected item.
NORMAL: The monitor will be controlled
normally by wireless remote controller.
LOCK: Disable the monitor control by infrared
wireless remote controller.
Keep pressing "DISPLAY" button during 5 sec
or more, this setting will return to "NORMAL".

TILING demonstrates multiple screens. This
feature provides a single large screen using up
to 16 monitors. It will be able to divide up to 4
each H and V. This requires you to feed the
PC output into each of the monitors through a
distributor.
H MONITORS: Select number of horizontal divide.
V MONITORS: Select number of vertical divide.
POSITION: Select a position to expand the screen.
FRAME COMP: Works in tandem with TILING
to compensate for the width of the tile bezels in
order to accurately display the image.
ENABLE: Select "YES", the monitor will
expand the selected position. PIP and STILL
will be disabled when "TILING" is activated.

HEAT STATUS

POWER ON DELAY

DATE AND TIME

SCHEDULE

DVI-MODE

*:INPUT RGB1 only

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.

Adjusts the delay time from "standby" to
"power on" mode.
"POWER ON DELAY" time is selectable from
OFF, 2sec, 4sec, 6sec, 8sec, 10sec, 20sec,
30sec, 40sec and 50sec.

Adjusts the current date and time for internal
clock.
You should set this function when you use
"SCHEDULE".

Programs the monitor's working schedule.
Schedule the power on and power off with
hour and a day of the week. Also sets the
input port.
This OSD can't remove except EXIT.
(see "NOTE 2" on page 28 for further
information)

Selects the kind of DVI-D equipment which is
connected RGB1.
Select "DVI-PC" when PC or other computer
equipment is connected.
Select "DVI-HD" when DVD player, which has
DVI-D output, is connected.

English

Selecting ADVANCED OPTION reset allows

ADVANCED

OPTION RESET

you to reset all OSD settings from ADVANCED
OPTION settings, except for DATE & TIME.
Select "YES" and press "SET" button to restore
the factory preset data.
Press "EXIT" button to cancel and then return
the previous menu.

English

NOTE 1: IMAGE PERSISTENCE

Please be aware that LCD Technology may experience a phenomena 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, if an image
was on the monitor for one hour and a residual image remains, the monitor should be turned off for one hour to erase the image.
As with all personal display devices, MITSUBISHI ELECTRIC recommends displaying moving images and using a moving
screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use.

Please set “POWER SAVE”, “SCREEN SAVER”, “DATE &TIME” and “SCHEDULE” functions to further reduce the risk of Image
persistence.

For long life use of Public Display

< Image Sticking of LCD Panel >

When LCD panel is operated continuously for long hours, a trace of electric charge remains near the electrode inside LCD, and
residual or "ghost" image of previous image may be observed. (Image Persistence)
Image Persistence is not permanent, but when fixed image is displayed for long period, ionic impurities inside LCD are accumulated
along the displayed image, and it is observed permanently. (Image Sticking)

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< Recommendations >

For preventing the fast transition to Image Sticking, and for longer life usage of LCD, following are recommended.

1. Fixed image should not be displayed for long period, and changed to another images with short cycle.

2. When no use, please turn off the monitor by remote control, or use Power Management Function of monitor or use Schedule
Function of monitor.

3. Reducing the environmental temperature is effective for long life use.
When Protection board (glass, acryl) is installed over the LCD surface, enclosed into the box / wall, or stack the monitor, please
utilize the temperature sensors inside monitor.
To reduce the environmental temperature, the monitor should be set Low Brightness or Cooling Fan "ON" by using Screen sever
Function.

4. Please use "Screen Saver Mode" of monitor.

NOTE 2: HOW TO SETUP SCHEDULE

Using the “SCHEDULE” function allows you to set up to seven different scheduled time intervals when the LCD Monitor will be
activated.
You can select the time the monitor turns on and turns off, the day of week the monitor is activated, and which input source the
monitor will use for each scheduled activation period. A check mark in the box next to the number of the schedule indicates that
the selected schedule is in effect.
To select which schedule to set, use the up/down arrows to move the number (1 to 7) of the schedule.
Use the (+) and (-) buttons to move the cursor horizontally within the particular schedule. Use the ( ) and ( ) buttons to increase
time and select input port. The “SET” button is used to make a selection.
If you create a schedule but do not want to use a power on time, select “--” in the “ON” time slot.
If you do not want to use a power off time select “--” in the OFF time slot.
If there is no input selected (“--” showing in the input spot) the input from the previous schedule will be used.
The selection of EVERY DAY within a schedule takes priority over other schedules that are set up to operate weekly.
When schedules are overlapping, scheduled Power ON time has priority over scheduled Power OFF time.
If there are two schedules programmed for the same time, then the highest numbered schedule has priority.
When the “OFF TIMER” (see page 25) is set, the “SCHEDULE” function is disabled.

NOTE 3: "PIP" and "POP"

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".

SUB

RGB1
RGB1
RGB2
RGB3

MAIN

DVD/HD
VIDEO<S>
VIDEO

Press the "PIP ON/OFF" buttons on the remote control to change between "PIP" and "POP"
mode as shown in the diagram below.

PIP

A

"PIP", "POP" mode resolution (Reference)

B

PIP SIZE

POP SIZE

RGB2 RGB3 DVD/HD

POP

A

SMALL

MIDDLE

LARGE

B

: 320 dots X 240 dots

: 480 dots X 320 dots

: 640 dots X 480 dots

: 320 dots X 240 dots

VIDEO<S>

VIDEO

: Supported
: Not supported

OFF

A

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Controlling the LCD monitor via RS-232C Remote Control

This LCD monitor can be controlled by connecting a personal computer with a RS-232C terminal.

Functions that can be controlled by a personal computer are:

• Power ON or OFF

• Switching between input signals

Connection

LCD Monitor + PC

PC

RS-232C Cable

English

NOTE: If your PC (IBM or IBM compatible) is equipped only with a 25-pin serial port connector, a 25-pin serial port

adapter is required. Contact your dealer for details.

1) Interface

'0' '0'

RS-232C

9600 [bps]

8 [bits]

NONE

1 [bits]

NONE

Function code

Function

Function

Data code

Data

Data

End code

0Dh

PROTOCOL

BAUD RATE

DATA LENGTH

PARITY BIT

STOP BIT

FLOW CONTROL

This LCD monitor uses RXD, TXD and GND lines for RS-232C control.

For RS-232C cable, the reverse type cable should be used.

2) Control command diagram

The command is structured by the address code, function code, data code and end code. The length of the

command is different for each function.

Address code
HEX

ASCII

30h 30h

[Address code]

[Function code]

[Data code]

[End code]

30h 30h (In ASCII code, '0' '0') fixed.

A code of each fixed control move.

A code of each fixed control data (number) and not always indicated.

0Dh (In ASCII code, ' ' ) fixed.

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3) Control sequence

(1) The command from a computer to the LCD monitor will be sent in 600ms.

(2) The LCD monitor will send a return command 600ms* 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 confirms 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 sequence by RS-232C, reject other

codes from personal computers side.

*: The sending time of return command may delay depending on the condition (during changing of the input signal, etc.).

Example: Turn the power ON ( ’ ’ is for ASCII code)

Sending commands

from the PC

30 30 21 0D

’0’ ’0’ ’!’ ’ ’

Status code from

LCD monitor

30 30 21 0D

’0’ ’0’ ’!’ ’ ’

Meaning

Command for

WER ON

PO

Command received

(Command echoed back)

4) Operation commands

The operation commands execute the basic operation setting of this LCD monitor.

It may not operate when changing the signal:

Operation ASCII HEX

POWER ON ! 21h

POWER OFF " 22h

INPUT RGB 1 _r1 5Fh 72h 31h

INPUT RGB 2 _r2 5Fh 72h 32h

INPUT RGB 3 _r3 5Fh 72h 33h

INPUT VIDEO _v1 5Fh 76h 31h

INPUT DVD/HD _v2 5Fh 76h 32h

INPUT S-VIDEO* _v3

5Fh 76h 33h

• POWER OFF command should be operated over 1 minute after the power is turned on.

• POWER ON command should be operated over 1 minute after the power is turned off.

* S-VIDEO is SEPARATE only

5) Read command
Host computer sends the command without Data-code to monitor.
After receiving this command, the monitor returns the command with Data-code of current status to host computer.
< ex. > When Host computer ask Power status of monitor, the status of monitor is powered-on.

Command from computer Command from Monitor Detail of command

30 30 76 50 0D 0''0'v''P'[enter] Ask about the power status of monitor.

30 30 76 50 31 0D '0''0''v''P''1'[enter] Monitor is powered-on.

Structure of the Read-command

POWER

Input

Picture mode

Temperature
of Internal
monitor

ON vP 1 76 50 31
OFF(stand by) vP 0 76 50 30
RGB-1(DVI-D) vI r1 76 49 72 31
RGB-2(D-SUB) vI r2 76 49 72 32
RGB-3(BNC) vI r3 76 49 72 33
Video vI v1 76 49 76 31
DVD/HD vI v2 76 49 76 32
S-VIDEO vI v3 76 49 76 33
HIGHBRIGHT vM p1 76 4D 70 31
STANDARD vM p2 76 4D 70 32

Around
Main board

Around

PCB

Powe r

resolution
1˚C

resolution
1˚C

Function Data (Receive) Function Data (Receive)

tc1

tc2

ASCII HEX

(ex.) +25

(ex.) +31

74 63 31 2B 20 32 35

74 63 32 2B 20 33 31

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Features

Reduced Footprint: Provides the ideal solution for environments requiring superior image quality but with size and

weight limitations. The monitor’s small footprint and low weight allow it to be moved or transported easily from one location
to another.

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: Allow you to quickly and easily adjust all elements of your screen image via simple
to use on-screen menus.

Plug and Play: The Microsoft
installation by allowing the monitor to send its capabilities (such as screen size and resolutions supported) directly to your
computer, automatically optimizing display performance.

Intelligent Power Manager System: Provides innovative power-saving methods that allow the monitor to shift to a lower
power consumption level when on but not in use, saving two-thirds of your monitor energy costs, reducing emissions and
lowering the air conditioning costs of the workplace.

Multiple Frequency Technology: Automatically adjusts monitor to the display card’s scanning frequency, thus displaying
the resolution required.

FullScan Capability: Allows you to use the entire screen area in most resolutions, significantly expanding image size.
VESA Standard Mounting Interface: Allows users to connect their LCD monitor to any VESA standard third party

mounting arm or bracket. Allows for the monitor to be mounted on a wall or an arm using any third party compliant device.
MITSUBISHI ELECTRIC recommends using mounting interface that comply with TÜV-GS and/or UL1678 standard in
North America.

DVI-D: The digital-only subset of DVI ratified by the Digital Display Working Group (DDWG) for digital connections be­tween computers and displays. As a digital-only connector, analog support is not provided off a DVI-D connector. As a DVI­based digital only connection, only a simple adapter is necessary for compatibility between DVI-D and other DVI-based
digital connectors such as DFP and P&D.

TILING, Frame compensation: Demonstrates multiple screens with an accurate image and compensates for the bezel
width.

ZOOM: Expands the image individually for horizontal and vertical direction.

®

solution with the Windows®95/98/Me/2000/XP operating system facilitates setup and

English

Self-diagnosis: When an internal error should occur, a failure state will be indicated.

English-31

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 compatibility and recommended settings.

• Check the signal cable connector for bent or pushed-in pins.

Power Button does not respond

• Unplug the power cord of the monitor from the AC outlet to turn off and reset the monitor.

Image persistence

• Please be aware that LCD Technology may experience a phenomenon known as Image Persistence. Image Persistence
occurs when a 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, if an image was
on the monitor for one hour and a residual image remains, the monitor should be turned off for one hour to erase the image.

NOTE: As with all personal display devices, MITSUBISHI ELECTRIC recommends displaying moving images and using a moving

screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use.

Image is unstable, unfocused or swimming is apparent

• Signal cable should be completely attached to the computer.

• Use the OSD Image Adjust controls to focus and adjust display by increasing or decreasing the fine adjustment.
When the display mode is changed, the OSD Image Adjust settings may need to be re-adjusted.

• Check the monitor and your display card with respect to compatibility and recommended signal timings.

• If your text is garbled, change the video mode to non-interlace and use 60Hz refresh rate.

Image of component signal is greenish

• Check to see if the DVD/HD input connector is selected.

LED on monitor is not lit (no green or red color can be seen)

• Power Switch should be in the ON position and power cord should be connected.

• Make certain the computer is not in a power-saving mode (touch the keyboard or mouse).

RED LED on monitor is blinking

• A certain failure might have occurred, please contact your nearest authorized MITSUBISHI ELECTRIC service facility.

Display image is not sized properly

• Use the OSD Image Adjust controls to increase or decrease the coarse adjustment.

• 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.)

Selected resolution is not displayed properly

• Use OSD Display Mode to enter Information menu and confirm that the appropriate resolution has been selected.
If not, select corresponding option.

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 the “OFF TIMER” function is enable and the power to the LCD monitor is turned off if the power supply is interrupted unexpect­edly, then the “OFF TIMER” will be reset.

Either light vertical or horizontal stripes may appear, depending on the specific display pattern. This is no product fault or degrada­tion.

English-32

Specifications

Specifications (LDT321V) : BH548

Product Specifications
LCD Module

Contrast Ratio:

Response time:

Design View Distance:

Frequency

Pixel Clock
Viewable Size
Input Signal
PC-Input:

Input-terminal:

VIDEO Input:

AUDIO Input:
RS-232C:
Output Signal
PC-Output:

Output-terminal:
VIDEO Output:
AUDIO Output:
Speaker Output:
Resolutions Supported

Power Supply
Power Consumption

Operational
Environment
Storage
Environment
Dimension

Weight

VESA compatible arm
mounting interface
Complied Regulatory
and Guidelines
Power Management
Plug & Play
Accessories

Net without stand:

Net with stand:

Net without stand:

Net with stand:

Diagonal:

Pixel Pitch:

Resolution:

Color:

Brightness:

View Angle:

Horizontal:

Vertical:

Video:

Sync:

In:

Video:

Sync:

Power Save:

Temperature:

Humidity:

Temperature:

Humidity:

Gross:

Gross:

Analog Input
32"/80.0cm

0.511mm
1366 x 768 dots
Over 16 million colors (depending on video card used)
500cd/m2 (typ.)
1200:1 (typ.)
12ms (typ.)
Up 88°/Down 88°/Left 88°/Right 88°(typ.) @CR>10
875mm/34.4inches

31.5kHz - 91.1kHz

50.0/58.0 - 85.0Hz

13.5MHz -165.0MHz

697.69 x 392.26mm/27.5 x 15.4inches

Analog RGB Video:0.7Vp-p
Input impedance 75ohm
Separate HV sync: TTL level (Pos./Neg.)
Input Impedance:2.2K ohm
BNC (R,G,B,H,V), 15Pin Mini D-sub
Composite:1.0Vp-p
Input impedance 75ohm BNC and RCA-PINJACK-INPUT
Y/C Y:1Vp-p C:0.286Vp-p Input
Impedance 75 ohm S-TERMINAL-INPUT
Component:1.0/0.7Vp-p
Input Impedance 75ohm BNC-INPUT
RCA PIN-JACK L/R INPUT x 2, STEREO Mini Jack INPUT x 1
9 Pin Mini D-sub

Analog RGB Video:0.7Vp-p with 75 ohm terminated
Separate HV sync: TTL level (Pos./Neg.)
15Pin Mini D-sub
BNC-OUTPUT x 1, Composite 1.0Vp-p with 75 ohm terminated
RCA PIN-JACK L/R OUTPUT x 1, 0.15Vrms with 47k ohm terminated
External Speaker Jack 7W + 7W (8 ohm)
640 x 480 at 60Hz to 85Hz
800 x 600 at 50Hz, 60Hz to 85Hz
1024 x 768 at 50Hz, 60Hz to 85Hz
1280 x 768 at 50Hz, 60Hz to 85Hz
1360 x 768 at 50Hz, 60Hz* to 85Hz
1280 x 1024 at 60Hz to 85Hz

1600 x 1200 at 60Hz.....................Maximum Resolution

* Recommended Resolution
NTSC,PAL,SECAM,4.43NTSC,PAL60 Component:480i,480p,720p,1080i

1.6 - 0.67A @100 - 240VAC, 50/60Hz
Max 160W
Less than 5W (Power button OFF/Main power switch ON)
5 - 40°C/ 41 - 104°F
20 - 80% (Without condensation)

-20 - 60°C /- 4 - 140°F
10 - 90% (Without condensation)/90%-3.5%x(Temp-40°C) regarding over 40°C
789mm(W) x 476.3mm(H) x 133mm(D)/31.1"(W) x 18.7"(H) x 5.24"(D)
789mm(W) x 535.1mm(H) x 246mm(D)/31.1"(W) x 21.1"(H) x 9.69"(D)
930mm(W) x 645mm(H) x 325mm(D)/36.7"(W) x 25.4"(H) x 12.8"(D)

35.7lbs/16.2kg (Approximately)

38.6lbs/17.5kg (Approximately)

51.8lbs/23.5kg
12 Holes (100mm pitches)
Optional Multi-purpose Fix Mount
UL60950-1/C-UL/TUV-GS/EN60950-1/BSMI/PSB/FCC-B/DOC-B/EN55022-B
EN55024/EN61000-3-2/EN61000-3-3/C-Tick/CE/GOST
VESA DPM
VESA DDC2B, DDC/CI
User's Manual, Power Cord, Video Signal Cable, Remote Controller, AAA Battery x 2,
Clamper x 2, Screw for Main switch cover x 2, Screw for CLAMPER x 2, Cable Holder,
Main switch cover

Digital Input

31.5kHz - 91.1kHz

50.0/58.0 - 85.0Hz

25.0MHz - 165.0MHz

TMDS

DVI-D (HDCP)

English

Note: Technical specifications are subject to change without notice.

English-33

Specifications (LDT371V) : BJ544

Product Specifications
LCD Module

Contrast Ratio:

Response time:

Design View Distance:

Frequency

Pixel Clock
Viewable Size
Input Signal
PC-Input:

Input-terminal:

VIDEO Input:

AUDIO Input:
RS-232C:
Output Signal
PC-Output:

Output-terminal:
VIDEO Output:
AUDIO Output:
Speaker Output:
Resolutions Supported

Power Supply
Power Consumption

Operational
Environment
Storage
Environment
Dimension

Weight

VESA compatible arm
mounting interface
Complied Regulatory
and Guidelines
Power Management
Plug & Play
Accessories

Net without stand:

Net with stand:

Net without stand:

Net with stand:

Diagonal:
Pixel Pitch:
Resolution:

Color:

Brightness:

View Angle:

Horizontal:

Vertical:

Video:

Sync:

In:

Video:

Sync:

Power Save:

Temperature:

Humidity:

Temperature:

Humidity:

Gross:

Gross:

Analog Input
37"/94.0cm

0.600mm
1366 x 768 dots
Over 16 million colors (depending on video card used)
500cd/m2 (typ.)
1200:1 (typ.)
12ms (typ.)
Up 88°/Down 88°/Left 88°/Right 88°(typ.) @CR>10
1000mm/39.4inches

31.5kHz - 91.1kHz

50.0/58.0 - 85.0Hz

13.5MHz -165.0MHz

819.60 x 460.80mm/32.3 x 18.1inches

Analog RGB Video:0.7Vp-p
Input impedance 75ohm
Separate HV sync: TTL level (Pos./Neg.)
Input Impedance:2.2K ohm
BNC (R,G,B,H,V), 15Pin Mini D-sub
Composite:1.0Vp-p
Input impedance 75ohm BNC and RCA-PINJACK-INPUT
Y/C Y:1Vp-p C:0.286Vp-p Input
Impedance 75 ohm S-TERMINAL-INPUT
Component:1.0/0.7Vp-p
Input Impedance 75ohm BNC-INPUT
RCA PIN-JACK L/R INPUT x 2, STEREO Mini Jack INPUT x 1
9 Pin Mini D-sub

Analog RGB Video:0.7Vp-p with 75 ohm terminated
Separate HV sync: TTL level (Pos./Neg.)
15Pin Mini D-sub
BNC-OUTPUT x 1, Composite 1.0Vp-p with 75 ohm terminated
RCA PIN-JACK L/R OUTPUT x 1, 0.15Vrms with 47k ohm terminated
External Speaker Jack 7W + 7W (8 ohm)
640 x 480 at 60Hz to 85Hz
800 x 600 at 50Hz, 60Hz to 85Hz
1024 x 768 at 50Hz, 60Hz to 85Hz
1280 x 768 at 50Hz, 60Hz to 85Hz
1360 x 768 at 50Hz, 60Hz* to 85Hz
1280 x 1024 at 60Hz to 85Hz

1600 x 1200 at 60Hz.....................Maximum Resolution

* Recommended Resolution
NTSC,PAL,SECAM,4.43NTSC,PAL60 Component:480i,480p,720p,1080i

2.1 - 0.9A @100 - 240VAC, 50/60Hz
Max 195W
Less than 5W (Power button OFF/Main power switch ON)
5 - 40°C/ 41 - 104°F
20 - 80% (Without condensation)

-20 - 60°C /- 4 - 140°F
10 - 90% (Without condensation)/90%-3.5%x(Temp-40°C) regarding over 40°C
909mm(W) x 545.8mm(H) x 133mm(D)/35.79"(W) x 21.49"(H) x 5.24"(D)
909mm(W) x 604.9mm(H) x 246mm(D)/35.79"(W) x 23.81"(H) x 9.69"(D)
1045mm(W) x 710mm(H) x 346mm(D)/41.14"(W) x 27.95"(H) x 13.62"(D)

44.1lbs/20kg (Approximately)

48.5lbs/22kg (Approximately)

62.83lbs/28.5kg
12 Holes (100mm pitches)
Optional Multi-purpose Fix Mount
UL60950-1/C-UL/TUV-GS/EN60950-1/BSMI/PSB/FCC-B/DOC-B/EN55022-B
EN55024/EN61000-3-2/EN61000-3-3/C-Tick/CE/GOST
VESA DPM
VESA DDC2B, DDC/CI
User's Manual, Power Cord, Video Signal Cable, Remote Controller, AAA Battery x 2,
Clamper x 2, Screw for Main switch cover x 2, Screw for CLAMPER x 2, Cable Holder,
Main switch cover

Digital Input

31.5kHz - 91.1kHz

50.0/58.0 - 85.0Hz

25.0MHz - 165.0MHz

TMDS

DVI-D (HDCP)

Note: Technical specifications are subject to change without notice.

English-34

Pin Assignment

1) Analog RGB input (MiniDsub15p): R G B 2

Pin No Name

1

2

3

4

5

6

7

8

9

10

11

12 DDC-SD

13

14 V-SYNC

15

S-VIDEO input (MINI DIN 4P): V I D E O <S>

2)

Video Signal Red

Video Signal Green

Video Signal Blue

GND

DDC-GND

Red-GND

Green-GND

Blue-GND

+5V (DDC)

SYNC-GND

GND

A

H-SYNC

DDC-SCL

15

English

Mini D-SUB 15P

5

10

MINI DIN 4P

1

6

11

Pin No Name

1

2

3 Y (Luminance)

4C

GND

GND

(Chroma)

3) Digital RGB input (DVI-D): R G B 1

Pin - Assignment of D

1 TX2- 9 TX1- 17

2TX2+ 10TX1+ 18

3 Shield (TX2 / TX4) 11 Shield (TX1 / TX3) 19 Shield (TX0 /

4NC 12NC 20N

5NC 13NC 21N

6 DDC-Serial Clock 14 +5V power 22

7 DDC-Serial Data 15 Ground 23 TXC+

8 NC 16 Hot plug detect 24

RS-232C input

4)

Pin No Name

1N

2

3

4N

5

6N

7RT

8CTS

9N

C

RXD

TXD

C

GND

C

S

C

VI connector:

TX0-

TX0+

Shield (TXC)

TXC-

1

TX5)

C

C

1

6

9

17

Mini D-SUB 9P

DVI-D

5

9

8

16

24

English-35

MITSUBISHI Contact Information

North America

MESCA (Mitsubishi Electric Sales Canada Inc.)

http://www.mitsubishielectric.ca
Information Technologies Group, 4299 14th Avenue, Markham, Ontario L3R 0J2,
Canada
Sales Phone :[phone]

Technical Phone :[phone]

Customer Care

MDEA (Mitsubishi Digital Electronics America, Inc.)
(Warranty Registration)
http://www.mitsubishi-presentations.com/
Presentation Products Division, 9351 Jeronimo Road, Irvine, CA 92618 U.S.A
Phone Main Line :[phone]

Technical Support
E-mail :[e-mail]

Fax :[phone]
E-mail :[e-mail]

Fax :[phone]

E-mail :[e-mail]

Technical :[phone]
Product Information :[phone]

Europe

MEU-FRA (Mitsubishi Electric Europe B.V French Branch)

25, Boulevard des Bouvets 92 741, Nanterre CEDEX, France
Sales Phone :[phone]

Technical Phone :[phone]

MEU-GER (Mitsubishi Electric Europe B.V. German Branch)
http://www.mitsubishi-evs.de/
Gothaer Strasse 8, 40880 Ratingen, Germany

MEU-IR (Mitsubishi Electric Europe B.V. Irish Branch)
http://www.mitsubishi.ie/
Westgate Business Park, Ballymount, Dublin 24, Ireland
Sales Phone :[phone]

Technical Phone :[phone]

MEU-IT (Mitsubishi Electric Europe B.V. Italian Branch)
Centro Direzionale Colleoni, Palazzo Persero-Ingresso 2, Via Paracelso 12, 20041
Agrate Brianza, Italy
Sales Phone :[phone]

MEU-NL (MitsubishiElectric Europe B.V. Benelux Branch)
http://www.MitsubishiElectric.nl
Nijverheidsweg 23a, 3641 RP Mijdrecht, The Netherlands
Sales Phone :[phone]

Technical Phone :[phone]

MEU (MITSUBISHI ELECTRIC EUROPE B.V.)
http://www.mitsubishi-projector.ru/
Moscow Representative Office, 12/1 Goncharnaya St. 109240, Moscow, Russia
Sales Phone :[phone]

MEU-SP (Mitsubishi Electric Europe B.V. Spanish Branch)
http://www.mitsubishielectric.es/
Ctra. de Rubi, 76-80, 08190 Sant Cugat del Valles, Barcelona, Spain
Sales Phone :[phone]

Technical Phone :[phone]

MEU-SWE (Mitsubishi Electric Europe B.V Scandinavian Branch)
Hammarbacken 14, Box 750, S-19127, Sollentuna, Sweden
Sales Phone :[phone]

Technical Phone :[phone]

MEU-UK (Mitsubishi Electric Europe)
http://www.mitsubishi.co.uk/evs/
Visual Information Systems Division, Travellers Lane, Hatfield, Hertfordshire, AL10 8XB
Sales Phone :[phone]

Technical Phone :[phone]

Russia (Mitsubishi Electric Europe B.V Moscow Representative Office)
52, bldg.5, Kosmodamianskaya Nab, 113054, Moscow, Russian Federation
Sales Phone :[phone]

Technical Phone :[phone]

Fax :[phone]

Fax :[phone]

Fax :[phone]

Fax :[phone]

Fax :[phone]
E-mail :[e-mail]

Fax :[phone]
E-mail :[e-mail]

Fax :[phone]
E-mail :[e-mail]

Fax :[phone]

Fax :[phone]
E-mail :[e-mail]

Fax :[phone]
E-mail :[e-mail]

Fax :[phone]

Fax :[phone]

Fax :[phone]
E-mail :[e-mail]

Fax :[phone]
E-mail :[e-mail]

Fax :[phone]

Fax :[phone]

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