NEC LCD1550V Service manual

PART NO. 599910588

•

SERVICE MANUAL



COLOR MONITOR

MultiSync

LCD1550V

MODELS LCD1550V-1 (B)/-BK(B)

This model changed a LCD panel (manufactured by Hannstar) from the original model.

Use the applicable service manual which surely confirms the model number of the

NAME PLATE, INSTRUCTION.

Refer to the page which the point of view of the model number is mentioned in.

• Model number : LA-15R02 / LA-15R02-BK
Maintenance is performed by the original service manual (Part No.

599910571).

Model number : LA-15R02-1 / LA-15R02-1-BK

Maintenance is performed using this service manual.

NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION

JUNE 2002

200206
08109741
08109742

The SERVICE PERSONNEL should have the appropriate technical training, knowledge and experience

necessary to:

• Be familiar with specialized test equipment, and

• Be careful to follow all safety procedures to minimize danger to themselves and their coworkers.

To avoid electrical shocks, this equipment should be used with an appropriate power cord.

This equipment utilized a micro-gap power switch. Turn off the set by first pushing power switch. Next,

remove the power cord from the AC outlet.

To prevent fire or shock hazards, do not expose this unit to rain or moisture.

This symbol warns the personnel that un-insulated voltage within the unit may have sufficient

magnitude to cause electric shock.

This symbol alerts the personnel that important literature concerning the operation and

maintenance of this unit has been included.

Therefore, it should be read carefully in order to avoid any problems.

WARNING

PRODUCT SAFETY CAUTION

1. When parts replacement is required for servicing, always use the manufacturer's specified replacement.

2. When replacing the component, always be certain that all the components are put back in the place.

3. As for a connector, pick and extract housing with fingers properly since a disconnection and improper

contacts may occur, when wires of the connector are led.

4. Use a proper screwdriver. If you use screwdriver that does not fit, you may damage the screws.

Point of view of the model number

NAME PLATE, INSTRUCTION (White model)

NAME PLATE, INSTRUCTION (Black model)

Model number

Original model: LA-15R02

Hannstar LCD model: LA-15R02-1

Model number

Original model: LA-15R02-BK

Hannstar LCD model: LA-15R02-1-BK

CONTENTS

USER'S MANUAL ------------------------------------------------------------------- 1-1

SERIAL NUMBER INFORMATION --------------------------------------------- 2-1

DISASSEMBLY ----------------------------------------------------------------------- 3-1

ADJUSTMENT PROCEDURES -------------------------------------------------- 4-1

INSPECTION --------------------------------------------------------------------------- 5-1

TROUBLE SHOOTING ------------------------------------------------------------- 6-1

CIRCUIT DESCRIPTION ----------------------------------------------------------- 7-1

Page No.

REPLACEMENT PARTS LIST --------------------------------------------------- 8-1

BLOCK DIAGRAM ------------------------------------------------------------------- 9-1

SCHEMATIC DIAGRAMS -------------------------------------------------------- 10-1

USER'S MANUAL

MultiSync LCD1550V

User’s Manual

UÏivatelská pfiíruãka

Bedienerhandbuch

Οδηγίες Χρήσης

Manual del usuario

Manuel Utilisateur

Manuale utente

Gebruikershandleiding

Podr´cznik u˝ytkownika

Руководство пользователя

Kullan∂c∂ Klavuzu

1-1

Declaration

Declaration of the Manufacturer

We hereby certify that the colour monitor

MultiSync LCD1550V (LA-15R02)
MultiSync LCD1550V (LA-15R02-BK)
MultiSync LCD1550V (LA-15R02-1)
MultiSync LCD1550V (LA-15R02-1-BK)

is in compliance with

Council Directive 73/23/EEC:

Council Directive 89/336/EEC:

and marked with

– EN 60950

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

NEC-Mitsubishi Electric Visual Systems, Corp.

MS Shibaura Bldg., 13-23,

Shibaura 4-chome,

Minato-Ku, Tokyo 108-0023, Japan

1-2

TCO’99

This is a translation of the original English TCO'99 document.

MultiSync LCD1550V White Model (LA-15R02 and LA-15R02-1)

Congratulations! You have just purchased a TCO’99
approved and labeled product! Your choice has
provided you with a product developed for
professional use. Your purchase has also contributed
to reducing the burden on the environment and also
to the further development of environmentally
adapted electronics products.

Why do we have environmentally labelled computers?

In many countries, environmental labelling has become an established
method for encouraging the adaptation of goods and services to the
environment. The main problem, as far as computers and other
electronics equipment are concerned, is that environmentally harmful
substances are used both in the products and during the manufacturing.
Since it has not been possible for the majority of electronics equipment
to be recycled in a satisfactory way, most of these potentially damaging
substances sooner or later enter Nature.

There are also other characteristics of a computer, such as energy
consumption levels, that are important from the viewpoints of both the
work (Internal) and natural (external) environments. Since all methods of
conventional electricity generation have a negative effect on the
environment (acidic and climate-influencing emissions, radioactive
waste, etc.), it is vital to conserve energy. Electronics equipment in
offices consume an enormous amount of energy since they are often left
running continuously.

What does labelling involve?

This product meets the requirements for the TCO’99 scheme which
provides for international and environmental labelling of personal
computers. The labelling scheme was developed as a joint effort by the
TCO (The Swedish Confederation of Professional Employees), Svenska
Naturskyddsforeningen (The Swedish Society for Nature Conservation)
and Statens Energimyndighet (The Swedish National Energy
Administration).

1-3

The requirements cover a wide range of issues: environment,
ergonomics, usability, emission of electrical and magnetic fields, energy
consumption and electrical and fire safety.

The environmental demands concern restrictions on the presence and
use of heavy metals, brominated and chlorinated flame retardants,
CFCs (freons) and chlorinated solvents, among other things. The
product must be prepared for recycling and the manufacturer is obliged
to have an environmental plan which must be adhered to in each
country where the company implements its operational policy. The
energy requirements include a demand that the computer and/or
display, after a certain period of inactivity, shall reduce its power
consumption to a lower level in one or more stages. The length of time
to reactivate the computer shall be reasonable for the user.

Labelled products must meet strict environmental demands, for
example, in respect of the reduction of electric and magnetic fields,
physical and visual ergonomics and good usability.

Environmental Requirements

Flame retardants

Flame retardants are present in printed circuit boards, cables, wires,
casings and housings. In turn, they delay the spread of fire. Up to thirty
percent of the plastic in a computer casing can consist of flame
retardant substances. Most flame retardants contain bromine or chloride
and these are related to another group of environmental toxins, PCBs,
which are suspected to give rise to severe health effects, including
reproductive damage in fisheating birds and mammals, due to the
bioaccumulative* processes. Flame retardants have been found in
human blood and researchers fear that disturbances in foetus
development may occur.

TCO’99 demand requires that plastic components weighing more than
25 grams must not contain flame retardants with organically bound
chlorine and bromine. Flame retardants are allowed in the printed circuit
boards since no substitutes are available.

Lead**

Lead can be found in picture tubes, display screens, solders and
capacitors. Lead damages the nervous system and in higher doses,
causes lead poisoning.

TCO’99 requirement permits the inclusion of lead since no replacement
has yet been developed.

1-4

Cadmium**

Cadmium is present in rechargeable batteries and in the
colourgenerating layers of certain computer displays. Cadmium
damages the nervous system and is toxic in high doses.

TCO’99 requirement states that batteries, the colourgenerating layers of
display screens and the electrical or electronics components must not
contain any cadmium.

Mercury**

Mercury is sometimes found in batteries, relays and switches, Mercury
damages the nervous system and is toxic in high doses.

TCO’99 requirement states that batteries may not contain any Mercury.
It also demands that no mercury is present in any of the electrical or
electronics components associated with the display unit.

CFCs (freons)

CFCs (freons) are sometimes used for washing printed circuit boards.
CFCs break down ozone and thereby damage the ozone layer in the
stratosphere, causing increased reception on Earth of ultraviolet light
with consequent increased risks of skin cancer (malignant melanoma).

The relevant TCO’99 requirement; Neither CFCs nor HCFCs may be
used during the manufacturing and assembly of the product or its
packaging.

* Bio-accumulative is defined as substances which accumulate within

living organisms.

** Lead, Cadmium and Mercury are heavy metals which are

Bioaccumulative.

To obtain complete information on the environmental criteria document,
order from:

TCO Development Unit

SE-114 94 Stockholm
SWEDEN
FAX Number: [phone]

E-mail (Internet): [e-mail]

You may also obtain current information on TCO’99 approved and
labelled products by visiting their website at:
http://www.tco-info.com/

1-5

TCO’95

This is a translation of the original English TCO'95 document.

MultiSync LCD1550V Black Model (LA-15R02-BK and LA-15R02-1-BK)

Congratulations! You have just purchased a TCO’95
approved and labeled product! Your choice has
provided you with a product developed for
professional use. Your purchase has also
contributed to reducing the burden on the
environment and also, to the further development of
environmentally adapted electronics products.

Why do we have environmentally labelled computers?

In many countries, environmental labelling has become an established
method for encouraging the adaptation of goods and services to the
environment. The main problem, as far as computers and other
electronics equipment are concerned, is that environmentally harmful
substances are used both in the products and during the manufacturing.
Since it has not been possible for the majority of electronics equipment
to be recycled in a satisfactory way, most of these potentially damaging
substances sooner or later enter Nature.

There are also other characteristics of a computer, such as energy
consumption levels, that are important from the viewpoints of both the
work (Internal) and natural (external) environments. Since all methods of
conventional electricity generation have a negative effect on the
environment (acidic and climate-influencing emissions, radioactive
waste, etc.), it is vital to conserve energy. Electronics equipment in
offices consume an enormous amount of energy since they are often left
running continuously.

What does labelling involve?

This product meets the requirements for the TCO’95 scheme which
provides for international and environmental labelling of personal
computers. The labelling scheme was developed as a joint effort by the
TCO (The Swedish Confederation of Professional Employees),
Naturskyddsforeningen (The Swedish Society for Nature Conservation)
and NUTEK (The National Board for Industrial and Technical
Development in Sweden).

The requirements cover a wide range of issues: environment,
ergonomics, usability, emission of electrical and magnetic fields, energy
consumption and electrical and fire safety.

1-6

The environmental demands concern restrictions on the presence and
use of heavy metals, brominated and chlorinated flame retardants,
CFCs (freons) and chlorinated solvents, among other things. The
product must be prepared for recycling and the manufacturer is obliged
to have an environmental plan which must be adhered to in each
country where the company implements its operational policy. The
energy requirements include a demand that the computer and/or
display, after a certain period of inactivity, shall reduce its power
consumption to a lower level in one or more stages. The length of time
to reactivate the computer shall be reasonable for the user.

Labelled products must meet strict environmental demands, for
example, in respect of the reduction of electric and magnetic fields,
physical and visual ergonomics and good usability.

TCO’95 is a co-operative project between TCO (The Swedish
Confederation of Professional Employees), Naturskyddsforeningen
(The Swedish Society for Nature Conservation) and NUTEK
(The National Board for Industrial and Technical Development in
Sweden).

Environmental Requirements

Brominated flame retardants

Brominated flame retardants are present in printed circuit boards,
cables, wires, casings and housings. In turn, they delay the spread of
fire. Up to thirty percent of the plastic in a computer casing can consist
of flame retardant substances. These are related to another group of
environmental toxins, PCBs, which are suspected to give rise to similar
harm, including reproductive damage in fisheating birds and mammals,
due to the bio-accumulative* processes. Flame retardants have been
found in human blood and researchers fear that disturbances in foetus
development may occur.

TCO’95 demand requires that plastic components weighing more than
25 grams must not contain organically bound chlorine and bromine.

Lead**

Lead can be found in picture tubes, display screens, solders and
capacitors. Lead damages the nervous system and in higher doses,
causes lead poisoning.

TCO’95 requirement permits the inclusion of lead since no replacement
has yet been developed.

1-7

Cadmium**

Cadmium is present in rechargeable batteries and in the
colourgenerating layers of certain computer displays. Cadmium
damages the nervous system and is toxic in high doses.

TCO’95 requirement states that batteries may not contain more than
25 ppm (parts per million) of cadmium. The colourgenerating layers of
display screens must not contain any cadmium.

Mercury**

Mercury is sometimes found in batteries, relays, switches, and back-light
systems, Mercury damages the nervous system and is toxic in high
doses.

TCO’95 requirement states that batteries may not contain more than
25 ppm (parts per million) of mercury. It also demands that no mercury
is present in any of the electrical or electronics components concerned
with the display unit, except the back-light system.

CFCs (freons)

CFCs (freons) are sometimes used for washing printed circuit boards
and in the manufacturing of expanded foam for packaging. CFCs break
down ozone and thereby damage the ozone layer in the stratosphere,
causing increased reception on Earth of ultraviolet light with consequent
increased risks of skin cancer (malignant melanoma).

The relevant TCO’95 requirement; Neither CFCs nor HCFCs may be
used during the manufacturing of the product or its packaging.

* Bio-accumulative is defined as substances which accumulate within

living organisms.

** Lead, Cadmium and Mercury are heavy metals which are

Bioaccumulative.

To obtain complete information on the environmental criteria document,
order from:

TCO Development Unit

SE-114 94 Stockholm
SWEDEN
FAX Number: [phone]

E-mail (Internet): [e-mail]

You may also obtain current information on TCO’95 approved and
labelled products by visiting their website at:
http://www.tco-info.com/

1-8

English

âesky

Deutsch

Ελληνικά

Español

Français

Italiano

Nederlands

Polski

Русский

Türkçe

1-9

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

RISK OF ELECTRIC SHOCK • DO NOT OPEN

TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER

CAUTION

Caution:

When operating the MultiSync LCD1550V with a 220-240V AC power source in Europe,
use the power cord provided with the monitor.

In the UK, a BS approved power cord with a moulded plug has a Black (five Amps) fuse
installed for use with this equipment. If a power cord is not supplied with this equipment
please contact your supplier.

When operating the MultiSync LCD1550V with a 220-240V AC power source in
Australia, use the power cord provided with the monitor.

For all other cases, use a power cord that matches the AC voltage of the power outlet
and has been approved by and complies with the safety standard of your particular
country.

(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.

English

E

NERGYSTAR

is a U.S. trademark.

As an E
determined that this product meets the E

NERGYSTAR

The E

IBM PC/XT/AT, PS/2, MCGA, VGA, 8514/A and XGA are registered trademarks of
International Business Machines Corporation.

Apple and Macintosh are registered trademarks of Apple Computer Inc.

Microsoft and Windows are registered trademarks of the Microsoft Corporation.

NEC is a registered trademark of NEC Corporation.

All other trademarks or registered trademarks are property of their respective owners.

®

NERGYSTAR

Partner, NEC-Mitsubishi Electronics Display of America, Inc. has

emblem does not represent EPA endorsement of any product or service.

NERGYSTAR

guidelines for energy efficiency.

English-1

1-10

Contents

Your new NEC MultiSync LCD monitor box* should contain the following:

• MultiSync LCD1550V monitor with tilt base

• Power Cord(s)

• Video Signal Cable

• User’s Manual

• CD ROM (includes complete User’s Manual in PDF format). To see
the User’s Manual, Acrobat Reader 4.0 must be installed on your PC.

1550V

* Remember to save your original box and packing material to transport

or ship the monitor.

English-2

1-11

Quick Start

To attach the MultiSync LCD monitor to your system, follow these
instructions:

1. Turn off the power to your computer.

2. Remove connector cover and cable cover.

3. For PC: Connect the 15-pin mini D-SUB of the appropriate
signal cable to the connector for the display card in your system
(Figure A.1). Tighten all screws.

For Mac: Connect the MultiSync LCD1550V Macintosh cable
adapter to the computer (Figure B.1). Attach the 15-pin mini D-SUB
end of the appropriate signal cable to the MultiSync LCD1550V
Macintosh cable adapter (Figure B.1). Tighten all screws.

4. Connect the 15-pin mini D-SUB of the video signal cable to the
appropriate connector on the back of the monitor (Figure C.1). Place
the Video Signal Cable under Clip B.

5. Connect one end of the power cord to the MultiSync LCD Series
monitor and the other end to the power outlet. Place the video signal
cable and AC power cord under the clips (Figure C.1). Replace
connector cover and cable cover.

NOTE: Adjust the position of the cable under the clips to avoid damage

for cable or monitor.

NOTE: Please refer to Caution section of this manual for proper

selection of AC power cord.

English

6. The Vacation Switch on the right side of the monitor must be turned
on (Figure D.1). Turn on the monitor with the Power Button and the
computer.

NOTE: The Vacation Switch is a true on/off switch. If this switch is on

the OFF position, the monitor cannot be turned on using the
front button DO NOT switch on/off repeatedly.

7. No-touch auto adjust automatically adjusts the monitor to optimal
settings upon initial setup for most timings. For further adjustments,
use the following OSM controls:

• Auto Adjust Contrast

• Auto Adjust

English-3

1-12

Refer to the Controls section of this User’s Manual for a full description
of these OSM controls.

NOTE: If you have any problems, please refer to the Troubleshooting

section of this User’s Manual.

Figure A.1

Macintosh
Cable
Adapter
(not included)

Figure B.1

English-4

1-13

Macintosh G3
and G4 do not
need a
Macintosh cable
adapter

Figure C.1

V
0
5

5
1

Connector cover

English

Cable cover

Clip B

Power Button

Vacation Switch

Figure D.1

Tilt

Grasp both sides of the monitor screen with your hands and adjust the
tilt as desired (Figure TS.1).

Remove Monitor Stand for Mounting

To prepare the monitor for alternate mounting purposes:

1. Remove the connector cover and cable cover (Figure R.1).

2. Disconnect all cables.

3. Place monitor face down on a non-abrasive surface (Figure R.2).

English-5

1-14

4. Remove the 4 screws connecting the monitor to the stand and lift off
the stand assembly (Figure R.2) the monitor is now ready for
mounting in an alternate manner.

5. Connect the AC cord and signal cable to the back of the monitor
(Figure R.3).

6. Reverse this process to reattach stand.

NOTE: Use only VESA-compatible alternative mounting method.

Figure TS.1

Figure R.1

English-6

1-15

English

Non-abrasive

surface

Figure R.2

Figure R.3

7. This LCD monitor is designed for use with a flexible arm. Please use
the attached screws (4pcs) when mounting. To meet the safety
requirements the monitor must be mounted to an arm which
guaranties the necessary stability under consideration of the weight
of the monitor. The LCD monitor shall only be used with an approved
arm (e.g. GS mark).

English-7

1-16

Replace screws

75 mm

75 mm

Thickness of bracket (arm)

2.0 ~ 3.2 mm

Tighten all screws

4 SCREWS (M4)
(MAX depth: 8.5 mm

If use other
screw, check
depth of hole.

)

Weight of LCD assembly: 3.2kg (MAX)

English-8

1-17

Controls

OSM (On-Screen-Manager) Controls

The OSM controls on the front of the monitor function as follows:
To access OSM press any of the control buttons (

, , -, +, NEXT).

English

Control

EXIT

CONTROL

ADJUST -/+

NEXT

RESET

NOTE: When RESET is pressed in the main and sub-menu, a warning

window will appear allowing you to cancel the RESET function
by pressing the EXIT button.

Menu

Exits the OSM controls.
Exits to the OSM main menu.

Moves the highlighted area left/right to select control

/

menus.
Moves the highlighted area up/down to select one of the
controls.

Moves the bar left/right to increase or decrease the
adjustment.
Activates Auto Adjust function.
Enter the sub menu.

Moves the highlighted area of main menu right to select
one of the controls.

Resets the highlighted control to the factory setting.

Brightness/Contrast Controls

BRIGHTNESS

Adjusts the overall image and background screen
brightness.

CONTRAST

Adjusts the image brightness in relation to the
background.

AUTO ADJUST

Adjusts the image displayed for non-standard
video inputs.

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1-18

Auto Adjust

Automatically adjusts the Image Position, the H. Size
and Fine setting.

Position Controls

LEFT/RIGHT

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

DOWN/UP

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

H. SIZE

Adjusts the horizontal size by increasing or decreasing
this setting.

FINE

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

Colour Control Systems

Five colour presets select the desired colour setting.
Each colour setting is adjusted at the factory.

R,G,B

Increases or decreases Red, Green or Blue colour
depending upon which is selected. The change in colour
will appear on screen and the direction (increase or
decrease) will be shown by the bars.

Tools

OSM POSITION

You can choose where you would like the OSM control
image to appear on your screen. Selecting OSM
Location allows you to manually adjust the position of
the OSM control menu left, right, down or up.

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1-19

OSM TURN OFF

The OSM control menu will stay on as long as it is use.
In the OSM Turn Off submenu, you can select how long
the monitor waits after the last touch of a button to shut
off the OSM control menu. The preset choices are 10,
20, 30, 45, 60 and 120 seconds.

OSM LOCK OUT

This control completely locks out access to all OSM
control functions. When attempting to activate OSM
controls while in the Lock Out mode, a screen will
appear indicating the OSM controls are locked out.
To activate the OSM Lock Out function, press
and hold down simultaneously. To de-activate the OSM
Lock Out, press
simultaneously.

, then and hold down

, then

RESOLUTION NOTIFIER

This optimal resolution is 1024 x 768. If ON is selected,
a message will appear on the screen after 30 seconds,
notifying you that the resolution is not at 1024 x 768.

FACTORY PRESET

Selecting Factory Preset allows you to reset all OSM
control settings back to the factory settings. The RESET
button will need to be held down for several seconds to
take effect. Individual settings can be reset by
highlighting the control to be reset and pressing the
RESET button.

English

Information

DISPLAY MODE

Indicates the current display resolution and frequency
setting of the monitor.

MONITOR INFO.

Indicates the model and serial numbers of your monitor.

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1-20

OSM Warning

OSM Warning menus disappear with Exit button.

NO SIGNAL: This function gives a warning when there
is no signal present. After power is turned on or when
there is a change of input signal or video is inactive, the

No Signal window will appear.

RESOLUTION NOTIFIER: This function gives a

warning of use with optimized resolution. After power is
turned on or when there is a change of input signal or
the video signal doesn’t have proper resolution, the
Resolution Notifier window will open. This function can
be disabled in the TOOL menu.

OUT OF RANGE: This function gives a
recommendation of the optimized resolution and refresh
rate. After the power is turned on or there is a change of
input signal or the video signal doesn’t have proper
timing, the Out Of Range menu will appear.

CHECK CABLE: This function will advise you to check
all Video Inputs on the monitor and computer to make
sure they are properly connected.

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Recommended Use

Safety Precautions and Maintenance

FOR OPTIMUM PERFORMANCE, PLEASE NOTE

THE FOLLOWING WHEN SETTING UP AND

USING THE MULTISYNC LCD COLOUR 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.

• Do not place any objects onto the monitor and do not use the monitor
outdoors.

• The inside of the flourescent tube located within the LCD monitor
contains mercury. Please follow the bylaws or rules of your municipality
to dispose of the tube properly.

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.

• Do not bend power cord.

• Do not use monitor in high temperatured, humid, dusty, or oily areas.

• Do not cover vent on monitor.

• If monitor is broken, do not come in contact with the liquid crystal.

• If glass is broken. Handle with care.

English

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1-22

• 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

CAUTION

• For optimum performance, allow
20 minutes for warm-up.

• Adjust the monitor height so that the top of
the screen is at or slightly below eye level.
Your eyes should look slightly downward
when viewing the middle of the screen.

• Position your monitor no closer than 40 cm
and no further away than 70 cm from your
eyes. The optimal distance is 53 cm.

• Rest your eyes periodically by focusing on
an object at least 6 m away. Blink often.

• Position the monitor at a 90° angle to windows and other light sources to
minimize glare and reflections. Adjust the monitor tilt so that ceiling lights
do not reflect on your screen.

• If reflected light makes it hard for you to see your screen, use an
antiglare filter.

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

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

• Use a document holder placed close to the screen.

• Position whatever you are looking at most of the time (the screen or
reference material) directly in front of you to minimize turning your head
while you are typing.

heat sources. Do not put anything on top of 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.

CORRECT PLACEMENT AND ADJUSTMENT OF

THE MONITOR CAN REDUCE EYE, SHOULDER

AND NECK FATIGUE. CHECK THE FOLLOWING

WHEN YOU POSITION THE MONITOR:

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• 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 ergonomics benefits, we recommend the following:

• Use the preset Size and Position controls with standard signals.

• Use the preset Colour Setting.

• Use non-interlaced signals with a vertical refresh rate between
60-75 Hz.

• Do not use primary colour blue on a dark background, as it is difficult to
see and may produce eye fatigue to insufficient contrast.

English

English-15

1-24

1-25

Printed in Taiwan

HD67NM55101

Serial Number Information

r

)

Refer to the serial number information shown below.

Manufactured Year :
( Last digit )

Manufactured Month :
January to September 1 to 9
October X
November Y
December Z

Panel Code: A ~ Z (Hannstar panel)

EX.) SERIAL NUMBER LABEL

Model Name : LCD1550V-1

: LCD1550V-1-BK

SERIAL NO. :

g g g g g g g g g

Serial Number(4-digit)
(sequential numbe

at production month,
0001-9999

(White model)

(Black model)

Reference: 0~9 (LG panel)

Factory Code:

Compal Taiwan factory ...... “I”

Compal China factory ...... “T”

Control Code:

A, B

2-1