NEC MultiSync LCD1920NX, MultiSync LCD1920NX(A), MultiSync LCD1920NX-BK(A), MultiSync LCD1920NX(B), MultiSync LCD1920NX-BK(B) User And Service Manual

COLOR MONITOR

MultiSync



LCD1920NX

MODELS LCD1920NX (A)/-BK(A)/(B)/-BK(B)

200208
08EA1AAF
08EA2AAF
08EA1ABF
08EA2ABF

SERVICE MANUAL

PART NO. 599910603

NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION

AUGUST 2002

WARNING

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.

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.

CONTENTS

Page No.

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

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

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

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

1-1

USER'S MANUAL

1. A Version

MultiSync

®

LCD1920NX

TM

1-2

Warning .................................................................................................................... 1

Getting Started ..................................................................................................... 2

Adjusting the Monitor ......................................................................................... 3

Quick Installation ................................................................................................. 4

Operations .............................................................................................................. 6

OSD Main Menu .......................................................................................................7

Recommended Use.............................................................................................. 10

Specifications .......................................................................................................12

Features .................................................................................................................13

Troubleshooting .................................................................................................. 14

References............................................................................................................. 15

Limited Warranty .................................................................................................16

TCO’95 .....................................................................................................................17

TCO’99..................................................................................................................... 19

Avertissement ..................................................................................................... 22

Pour vous aider à démarrer ............................................................................. 23

Régler le moniteur ............................................................................................. 24

Installation rapide .............................................................................................. 25

Fonctionnement .................................................................................................. 27

Menu principal OSD ............................................................................................ 28

Usage recommandé ............................................................................................ 31

Caractéristiques ................................................................................................. 33

Fonctions .............................................................................................................. 34

Dépannage ............................................................................................................ 35

Références ........................................................................................................... 36

Garantie limitée .................................................................................................. 37

TCO’95 .................................................................................................................... 38

TCO’99.................................................................................................................... 40

Index

1-3

1

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.

WARNING

CAUTION

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.

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. 950.

FCC Information

1.Use the attached specified cables with the MultiSync LCD1920NX (L19GC061) 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 AC Adapter.
(3) Please use the supplied shielded video signal cable.

Use of other cables and adapters may cause interference with radio and television
reception.

2.

This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy, and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver

is connected.

• Consult your dealer or an experienced radio/TV technician for help.

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.

1-4

2

Getting Started

Congratulations on your purchase of this LCD Monitor.
Please read this section carefully to get an instant understanding of
this product and its correct operations.

Important! Please keep the original carton and all packing materials for future
shipping needs.

Package Contents

Your LCD Monitor package includes the following items:

• 19” LCD Color Monitor

• Signal cable with 15 pin D-Sub connector

• AC Adapter

• Power cord

• User’s Manual

Unique Features

• 8-bit panel, supporting 16.7M true colors

• High brightness & high contrast, providing more vivid images

• Built-in both analog and digital interfaces

• TCO’99 and TCO’95 approved

• Composite sync compatibility

• Five languages in OSD (On Screen Display)

• 9-stage smoothing function

• Supports 19 sets of factory preset modes and 32 sets of user’s automatically

saved modes

• Wide Viewing Angle

1-5

3

Adjusting the Monitor

Press down on the stand and gently adjust the monitor to a suitable
viewing angle (see Figure below). Please note that this monitor can
only be tilted forward to 5 degrees, backward to 20 degrees, and
swiveled 90 degrees left/right. To prevent damage to the monitor,
do not press the screen over its tolerant angles.

90°

20°

5°

90°

1-6

G

C

A

B

F

E

D

4

Quick Installation

• Make sure the computer is turned off.

• Attach the female end of the power cord (Indication E) to the AC adapter

(Indication D), then plug the AC adapter connector to the power “DC-IN
(Indication A)” jack of the LCD monitor.

• When using a power cord, plug the male end into the wall socket.

• Plug one end of the 15 pin D-SUB signal cable (Indication F) in the “D-SUB”

video signal connector (Indication B) of LCD monitor. If using a digital signal,
plug one end of the 24 pin DVI-D signal cable (Indication G) in the “DVI-D”
video signal connector (Indication C) of LCD monitor.

• Turn on the computer.

• Turn on the LCD monitor.

• Before operating the monitor, please refer to page 6 “Operations” first.

A. DC In
B. D-SUB
C. DVI-D
D. AC Adapter

E. Power Cord
F. D-SUB Signal Cable

G. DVI-D Signal Cable (not included)

NOTE : When operating this LCD monitor with an AC125-240V power source,

please refer to “Recommended Use” for proper power cord selection.
Use supplied AC adapter.

Connector Cover

1-7

Quick Installation

–continued

Remove Monitor Stand for Mounting

To prepare the monitor for alternate mounting purposes:

1.Disconnect all cables.

2.Place monitor face down on a non-abrasive
surface (Figure R.1).

3.Remove the 4 screws connecting the monitor
to the stand and lift off the stand assembly
(Figure R.1). The monitor is now ready for
mounting in an alternate manner.

4.Connect the AC cord and signal cable to the
back of the monitor.

5. Reverse this process to reattach stand.

NOTE: Use only VESA-compatible alternative mounting method.

6.This LCD monitor is designed for use with a flexible arm.
Please use the attached screws (4pcs) as shown in the picture when

installing.
To meet fhe 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).

Figure R.1

Non-abrasive surface

Replace screws.

5

1-8

6

Operations

To turn the monitor on or off, push the power button (Indication E) on the front of
the monitor. When the power light (Indication F) turns green, the LCD is ready to
use.

Function Keys

A. MENU 1. Press this button to turn on the OSD (On

Screen Display) main menu.

2. Press this button to activate selected items.

3. Press this button 2 seconds or more to turn off
the main menu.

B. [–] 1. To scroll down the menu.

2. To decrease the value of selected item.

C. [+] 1. To scroll up the menu.

2. To increase the value of selected item.

D. AUTO

Press this button to activate ”AUTO SYNC” function.
E. Power switch Press this button to turn on/off the monitor.
F. Power LED When the light is green, the power is on; amber

light is when the power is off or in power saving

mode.

Hot Keys

• Auto-Sync: Press the [AUTO] button to activate Auto Sync.

• Auto-Contrast: Press the [+] button to activate the Auto Contrast adjustment.

• Change Signal Input: Press the [–] button to change the signal input, “DVI” or
“D-SUB”.

A B C D FE

1-9

7

OSD Main Menu

For screen adjustments, press the [MENU] button to display the OSD (On-Screen Display)
Main Menu shown below. Press the [+] or [–] button to scroll up or down the menu to your
required options. Please note that the OSD will automatically turn off in 30 seconds
without any manipulation or by simply pressing the [MENU] button for 2 seconds.

CONTRAST: Adjusts the contrast level of the screen image. Under Main Menu,
select CONTRAST using the [+] or [–] button, then press [MENU] button to activate
the function. Press the [+] button to increase contrast, [–] button to decrease
contrast. Press [MENU] to return to Main Menu.

AUTO-CONTRAST: Automatically adjusts the contrast level of the screen image.
Press [+] or [–] button to select AUTO CONTRAST, then press [MENU] button to
activate AUTO CONTRAST.

VIDEO ANALOG/DIGITAL: Switches between analog and digital input signal.
Press [+] or [–] button to select VIDEO ANALOG or VIDEO DIGITAL, then press
[MENU] button to switch.

BRIGHTNESS: Adjusts the brightness level of the screen image. Under the Main
Menu, select BRIGHTNESS using [+] or [–] button, then press [MENU] button to
activate the function. Press the [+] button to increase the brightness, [–] button to
decrease the brightness. Press [MENU] to return to Main Menu.

COLOR Sub-Menu:

• Under the Main Menu, select COLOR using the [+] or [–] button, then press
[MENU] button to activate the COLOR Sub-Menu.

• Under the COLOR Sub-Menu, press [+] or [–] button to scroll up or down to your
desired preset color mode. Then press [MENU] to activate the mode.

• Choose user’s mode by adjusting R, G, B respectively. Press the [+] or [–] button
select R or G or B bar, then press [MENU] to activate the adjustment. Press the
[+] or [–] button to adjust the values, then press [MENU] button to save the value
and return to color Sub-Menu to adjust another color. After adjusting R, G, B
colors, press [MENU] to return to Main Menu.

MAIN MENU: Returning to OSD main menu. Press [+] or [–] button to select
MAIN MENU, then press [MENU] button to return to OSD Main Menu.

1-10

8

OSD Main Menu

–continued

LCD ADJUST Sub-Menu (Analog input only): Under the Main Menu,
select LCD ADJUST using the [+] or [–] button, then press [MENU] button to enter
LCD ADJUST Sub-Menu.

PC/MAC: Switching between PC at 800X600 resolution and MAC at
832X624 resolution, using [+] or [–] button. Then press [MENU] to initiate
the switch between PC and MAC shown as above.

H SIZE: Adjusting the width of the screen image. Select H-SIZE, using [+] or
[–] button, then press [MENU] button to activate the function. Press [+]
button to increase the width of the screen image, press [–] button to
decrease the width of the screen image shown below. Press [MENU] to
return to LCD ADJUST Sub-Menu.

H - POSITION:

Moving the screen image to the right or left. Select H - POSITION
using the [+] or [–] button, then press the [MENU] button to activate the
function. Press [+] button to move the screen to the right, [–] button to move
to the left. Press [MENU] to return to LCD ADJUST Sub-Menu.

V - POSITION:

Moving the screen image up or down. Select V - POSITION
using the [+] or [–] button, then press [MENU] to activate the function.
Press [+] button to move the screen image up, [–] button to move down.
Press [MENU] to return to LCD ADJUST Sub-Menu.

FINE TUNE: Aligning the performance slightly. Select FINE TUNE using the
[+] or [–] button, then press [MENU] button to activate the function. Press [+]
or [–] button until the screen image looks crisp, sharp and focused. Press
[MENU] to return to LCD ADJUST Sub-Menu.

AUTO-SYNC: Automatically adjusts the image to the best performance.
Press [+] or [–] button to select AUTO SYNC, then press [MENU] button to
activate AUTO SYNC.

NOTE: • When setting up this monitor for the first time, perform

AUTO-SYNC before use.

• To perform AUTO-SYNC, first display an image that makes the
entire screen very bright.

MAIN MENU: Returning to OSD main menu. Press [+] or [–] button to select

MAIN MENU, then press [MENU] button to return to OSD Main Menu.

LANGUAGE: Selecting preferred language used in the OSD menus. Under Main
Menu, scroll to Language using [+] or [–] button, then press[MENU] button to
activate the function. Press [+] or [–] button to choose preferred Language, then
press [MENU] to return to Main Menu.

MAIN MENU: Returning to OSD main menu. Press [+] or [–] button to select
MAIN MENU, then press [MENU] button to return to OSD Main Menu.

1-11

9

OSD Main Menu

–continued

MISC Sub-Menu

Under the Main Menu, select MISC using the [+] or [–] button, then press [MENU] button to
enter MISC Sub-Menu.

RESOLUTION NOTIFIER: This optimal resolution is 1280 x 1024. If ON is
selected, a message will appear on the screen after 30 seconds, notifying
you that the resolution is not at 1280 x 1024.

H-OSD POSITION: Moves the OSD position on the screen to the right or
left. Select H-OSD POSITION using [+] or [–] button, then press [MENU]
button to activate the function. Press the [+] button to move the OSD position
to the right, [–] button to move left. Then press [MENU] to return to MISC
Sub-Menu.

V-OSD POSITION: Moves the OSD position on the screen up or down.
Select V-OSD POSITION using [+] or [–] button, then press [MENU] button
to activate the function. Press the [+] button to move the OSD position up,
[–] button to move down. Then press [MENU] to return to MISC Sub-Menu.

SMOOTHING: Makes the displayed texts smooth. Select SMOOTHING
using [+] or [–] button, then press [MENU] button to activate the function.
Press [+] or [–] button and adjust to your liking. Press [MENU] button to
return to MISC Sub-Menu.

INVISIBLE: Activates the OSD background to be invisible. Select INVISIBLE
using the [+] or [–] button, then press [MENU] button to select either On or
Off option.

INFORMATION: Displays the timing mode (video signal input) coming
from the graphics card in the computer. Select INFORMATION using the [+] or
[–] button, then press [MENU] to display the mode. Then press [MENU]
button to return to MISC Sub-Menu.

RECALL: Returns the adjustments back to factory settings if the monitor is
not operating at its original factory settings. Select RECALL using the [+]
or [–] button, then press [MENU] button to reset the settings.

MAIN MENU: Returns to OSD main menu. Press [+] or [–] button to select
MAIN MENU, then press [MENU] button to return to OSD Main Menu.

EXIT: Turns off the OSD. Select EXIT using the [+] or [–] button, then press
[MENU] to exit the OSD.

OSD Warning

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 MISC Sub-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.

1-12

10

Safety Precautions and Maintenance

FOR OPTIMUM PERFORMANCE, PLEASE NOTE THE

FOLLOWING WHEN SETTING UP AND USING

THE MULTISYNC

®

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 MultiSync LCD monitor with its AC 125-240V power source, use a
power supply cord that matches the power supply voltage of the AC power outlet being
used. The power supply cord you use must have been approved by and comply with
the safety standards of your country. (Type H05VV-F should be used in Europe)

• In UK, use a BS-approved power cord with molded plug having a black (5A) fuse installed
for use with this monitor. If a power cord is not supplied with this monitor, please contact
your supplier.

•

Use supplied AC Adapter. Do not place any objects onto the AC Adapter and do not
use the AC Adapter outdoors.

• 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.

• If glass is broken, handle with care.

• Do not cover vent on monitor.

• 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 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.

Recommended Use

CAUTION

1-13

CORRECT PLACEMENT AND ADJUSTMENT OF THE MONITOR

CAN REDUCE EYE, SHOULDER AND NECK FATIGUE. CHECK THE

FOLLOWING WHEN YOU POSITION THE MONITOR:

• 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 16 inches
and no further away than 28 inches from your
eyes. The optimal distance is 21 inches.

• Rest your eyes periodically by focusing on an
object at least 20 feet 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 anti-glare 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.

• 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:

•

Adjust the Brightness until the background raster disappears

•

Do not position the Contrast control to its maximum setting

•

Use the preset Size and Position controls with standard signals

•

Use the preset Color Setting

•

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

•

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

For more detailed information on setting up a healthy work environment, call NEC
at [phone], NEC FastFacts

™

information at [phone] and request
document #900108 or write the American National Standard for Human Factors
Engineering of Visual Display Terminal Workstations – ANSI-HFS Standard
No. 100-1988 – The Human Factors Society, Inc. P.O. Box 1369, Santa Monica,
California 90406.

11

Recommended Use

–continued

1-14

Specifications

12

Monitor MultiSync® LCD1920NX

™

Specifications Monitor

LCD Size 19.0" (full 19.0" viewable diagonal area)

Type TFT (Thin Film Transistor), Active Matrix Panel

0.294mm pixel pitch

Color Filter RGB Vertical Stripe

Glass surface Anti-Glare

Maximum Left/right 85°/85°
Viewing Angles Up/Down 85°/85°

Input Signal Video Sync RGB Analog (0.7/1.0 Vp-p, 75 ohms)

DVI-D (100 ohms)

Separate Sync, Composite Sync

Fh: 31.5-80 kHz, Fv: 56-75 Hz

Compatibility PC Up to 1280 x 1024 Non-interlaced (NI)

Macintosh®Up to 1280 x 1024 Non-interlaced (NI)
Resolution Primary Mode VESA 1280 x 1024 @ 60Hz
Power Voltage AC 100-240V, 50/60 Hz
Connector Input Signal Analog: 15 pin D-sub Connector

Digital: 24 pin DVI-D Connector
Display Area Full screen 376.3 mm (H) x 301.1 mm (V)
Operating Temperature 41 F to 95 F (5 °C to 35 °C)

Conditions Humidity 10% to 80% (non-condensing)

Altitude to 10,000 feet (3,000m)

Storage Temperature 14 F to +140 F (-10 °C to +60 °C)
Conditions Humidity 10% to 85% (non-condensing)

Altitude to 40,000 feet (12,000m)

Dimensions Physical 434.5 mm (W) x 205.0 mm (D) x 423.0 mm (H)

17.1 inches (W) x 8.1 inches (D) x 16.7 inches (H)

Weight Net 8.0 kg (17.6 lbs)

Gross 11.0 kg (24.3 lbs)

Power State Power On <60W (green LED)

Power Off <3W (amber LED)

•

All products and trademarks are brand names of their respective companies.

•

Specifications are subject to change without prior notice.

1-15

13

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.

AccuColor

®

Control Systems: Allows you to adjust the colors on your screen and

customize the color accuracy of your monitor to a variety of 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.
No-touch Auto Adjust: No-touch auto adjust automatically adjusts the monitor to

optimal settings upon initial setup.

ErgoDesign

®

Features: Enhance human ergonomics to improve the working

environment, protect the health of the user and save money. Examples include
OSD controls for quick and easy image adjustments, tilt base for preferred angle
of vision, small footprint and compliance with MPRII and TCO guidelines for
lower emissions.

Plug and Play: The Microsoft

®

solution with the Windows® 95/98/Me/2000/XP
operating system facilitates setup and installation by allowing the monitor to send
its capabilities (such as screen size and resolutions supported) directly to your
computer, automatically optimizing display performance.

IPM

™

(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 MultiSync

®

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.

1-16

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 the LED of AC adapter is ON.

• 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

• Image persistence is when a “ghost” of an image remains on the screen even after
the monitor has been turned off. Unlike CRT monitors, LCD monitors’ image
persistence is not permanent. To alleviate image persistence, turn the monitor off
for as long as an image was displayed. If an image was on the monitor for one
hour and a ”ghost” of that image remains, the monitor should be turned off for one
hour to erase the image.

NOTE: As with all personal display devices, NEC-Mitsubishi Electronics Display of America
recommends using a screen saver at regular intervals whenever the screen is idle.

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 total. 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.

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

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

• Check the LED of AC adapter is ON.

•

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

Display image is not sized properly

• Use the OSD Image Adjust controls to increase or decrease the Coarse total.

• 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.

14

1-17

15

References

• BBS [phone]

NEC-Mitsubishi Electronics Display of America Remote Bulletin Board System is
an electronic service accessible with your system and a modem. Communica­tion parameters are: 300/1200/2400/9600/14.4k/28.8k/33.6k bps, no
parity, 8-data bits, 1 stop bit

• Customer Service/
Technical Support [phone]

Fax [phone]

• Electronic Channels:

Internet e-mail: [e-mail]
Internet ftp site: ftp.necmitsubishi.com
World Wide Web: http://www.necmitsubishi.com
Product Registration:

http://www.necmitsubishi.com/productregistration
European Operations: http://www.nec-mitsubishi.com
Windows® 95/98/Me/2000/XP INF File:

http://support.necmitsubishi.com/software.htm

then download the file NECMSINF.ZIP

• FastFacts™ Information [phone]

INFORMATION DESCRIPTION DOCUMENT #

Glossary Definition of terms related 900203

to functions, features and

installation of the

MultiSync

®

monitor

More Information Names and addresses of 900204

other groups involved in

standards and features of

the MultiSync monitor
Macintosh Connection Detailed information on 153006

connecting the MultiSync

monitor to a Macintosh
Healthy Work Environment Detailed information on 900108

setting up a healthy work

environment

• Literature & Sales Info (800) NEC-INFO [[phone]]

• MultiSync Fulfillment [phone]

[For software & accessories]

• TeleSales [phone]

1-18

16

Limited Warranty

NEC-Mitsubishi Electronics Display of America, Inc. (hereinafter “NMD-A”) warrants this
Product to be free from defects in material and workmanship and, subject to the conditions set
forth below, agrees to repair or replace (at NMD-A’s sole option) any part of the enclosed unit
which proves defective for a period of three (3) years from the date of first consumer purchase.
Spare parts are warranted for ninety (90) days. Replacement parts or unit may be new or
refurbished and will meet specifications of the original parts or unit.

This warranty gives you specific legal rights and you may also have other rights, which vary
from state to state. This warranty is limited to the original purchaser of the Product and is not
transferable. This warranty covers only NMD-A-supplied components. Service required as a
result of third party components is not covered under this warranty. In order to be covered
under this warranty, the Product must have been purchased in the U.S.A. or Canada by the
original purchaser. This warranty only covers Product distribution in the U.S.A. or Canada by
NMD-A No warranty service is provided outside of the U.S.A. or Canada. Proof of Purchase
will be required by NMD-A to substantiate date of purchase. Such proof of purchase must be
an original bill of sale or receipt containing name and address of seller, purchaser, and the
serial number of the product.

It shall be your obligation and expense to have the Product shipped, freight prepaid, or
delivered to the authorized reseller from whom it was purchased or other facility authorized
by NMD-A to render the services provided hereunder in either the original package or a
similar package affording an equal degree of protection. All Products returned to NMD-A for
service MUST have prior approval, which may be obtained by calling 1-800-632-4662. The
Product shall not have been previously altered, repaired, or serviced by anyone other than a
service facility authorized by NMD-A to render such service, the serial number of the product
shall not have been altered or removed. In order to be covered by this warranty the Product
shall not have been subjected to displaying of fixed images for long periods of time resulting
in image persistence (afterimage effects), accident, misuse or abuse or operated contrary to
the instructions contained in the User’s Manual. Any such conditions will void this warranty.

NMD-A SHALL NOT BE LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL,
OR OTHER TYPES OF DAMAGES RESULTING FROM THE USE OF ANY NMD-A PRODUCT
OTHER THAN THE LIABILITY STATED ABOVE. THESE WARRANTIES ARE IN LIEU OF ALL
OTHER WARRANTIES EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES OR THE
LIMITATION OR EXCLUSION OF LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAM­AGES SO THE ABOVE EXCLUSIONS OR LIMITATIONS MAY NOT APPLY TO YOU.

This Product is warranted in accordance with the terms of this limited warranty. Consumers
are cautioned that Product performance is affected by system configuration, software, the
application, customer data, and operator control of the system, among other factors. While
NMD-A Products are considered to be compatible with many systems, specific functional
implementation by the customers of the Product may vary. Therefore, suitability of a Product
for a specific purpose or application must be determined by consumer and is not warranted
by NMD-A.

For the name of your nearest authorized NEC-Mitsubishi Electronics Display service facility,
contact NEC-Mitsubishi Electronics Display of America at 1-800-632-4662.

1-19

17

TCO’95

MultiSync LCD1920NX (L19GC061) Black Model

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.

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

1-20

18

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.

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 Bio-accumulative.

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/

TCO’95

–continued

1-21

TCO’99

19

MultiSync LCD1920NX (L19GC061) White Model

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).

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 bio-

1-22

20

TCO’99

–continued

accumulative* 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.

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 Bio-accumulative.

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/

1-23

21

Declaration of the Manufacturer

We hereby certify that the color monitor

MultiSync® LCD1920NX (L19GC061)

is in compliance with

Council Directive 73/23/EEC:

– EN 60950

Council Directive 89/336/EEC:

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

and marked with

NEC-Mitsubishi Electric Visual

Systems Corporation

4-13-23, Shibaura,

Minato-Ku

Tokyo 108-0023, Japan

1-24

2. B Version

MultiSync LCD1920NX

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

1-25

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: NEC-Mitsubishi Electronics Display of America, Inc.
Address: 1250 North Arlington Heights Road, Suite 500

Itasca, Illinois 60143-1248

Tel. No.: [phone]

Type of Product: Computer Monitor

Equipment Classification: Class B Peripheral

Model: MultiSync LCD1920NX

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. NEC is a registered trademark of NEC Corporation. E

NERGY STAR

is a U.S. registered trademark. All other brands and product names are trademarks or registered trademarks of their
respective owners.

As an E

NERGY STAR

®

Partner, NEC-Mitsubishi Electronics Display of America has determined that this product meets the

Energy Star guidelenes for energy efficiency. The E

NERGY STAR

emblem does not represent EPA endorsement of any product

or service.

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. 950.

FCC Information

1. Use the attached specified cables with the MultiSync LCD1920NX (L19GC061) 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 AC Adapter.
(3) Please use the supplied shielded video signal cable.

Use of other cables and adapters may cause interference with radio and television reception.

2.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment
generates, uses, and can radiate radio frequency energy, and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult your dealer or an experienced radio/TV technician for help.

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 Radio­TV Interference Problems.” This booklet is available from the U.S. Government Printing Office, Washington, D.C., 20402, Stock No.
004-000-00345-4.

1-26

TCO’95

MultiSync LCD1920NX Black Model

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.
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 bio­accumulative* 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.

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
Bio-accumulative.
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/

1-27

MultiSync LCD1920NX White Model

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).
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 bio-accumulative* 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.

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
Bio-accumulative.
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/

TCO’99

1-28

Index

Warning, Caution .................................... English-1

Declaration ............................................. English-1

Getting Started ....................................... English-2

Adjusting the Monitor .............................. English-2

Quick Installation .................................... English-3

Operations .............................................. English-5

OSD Main Menu ..................................... English-6

Recommended Use ................................ English-8

Troubleshooting .................................... English-10

Varování, Upozornûní ............................... âesky-1

Prohlá‰ení ................................................ âesky-1

Zaãínáme ..................................................âesky-2

Nastavení monitoru .................................. âesky-2

Rychlá instalace ....................................... âesky-3

Operace ....................................................âesky-5

Hlavní nabídka OSD ................................. âesky-6

Provozní pokyny ....................................... âesky-8

OdstraÀování problémÛ .......................... âesky-10

Warnung, Vorsicht ................................. Deutsch-1

Erklärung ............................................... Deutsch-1

Erste Schritte .........................................Deutsch-2

Ausrichten des Monitors ........................Deutsch-2

Installation ............................................. Deutsch-3

Bedienung ............................................. Deutsch-5

OSD-Hauptmenü ...................................Deutsch-6

Einsatzempfehlungen ............................Deutsch-8

Fehlerbehebung .................................. Deutsch-10

ΠΡΟΕΙ∆ΟΠΟΙΗΣΗ, ΠΡΟΣΟΧΗ.......... Ελληνικά-1

∆ήλωση .............................................. Ελληνικά-1

Προετοιµασία .................................... Ελληνικά-2

Ρύθµιση της Οθνης ........................Ελληνικά-2

Γρήγορη Εγκατάσταση ..................... Ελληνικά-3

Λειτουργίες ....................................... Ελληνικά-5

Κύριο Μενού OSD ............................ Ελληνικά-6

Προτεινµενη Χρήση ....................... Ελληνικά-8

Εντοπισµς Βλαβών ....................... Ελληνικά-10

Advertencia, Peligro .............................. Español-1

Declaración ........................................... Español-1

Introducción ........................................... Español-2

Ajuste del monitor .................................. Español-2

Instalación rápida .................................. Español-3

Funcionamiento ..................................... Español-5

Menú principal de OSD ......................... Español-6

Uso recomendado ................................. Español-8

Solución de problemas ........................ Español-10

Avertissement, Attention....................... Français-1

Déclaration ........................................... Français-1

Prise en main ....................................... Français-2

Réglage du moniteur ............................ Français-2

Installation rapide ................................. Français-3

Fonctionnement .................................... Français-5

Menu principal OSD ............................. Français-6

Conseils d’utilisation ............................. Français-8

Résolution des problèmes .................. Français-10

Avvertenza, Attenzione........................... Italiano-1

Dichiarazione .......................................... Italiano-1

Per cominciare........................................ Italiano-2

Regolazione del monitor ......................... Italiano-2

Installazione rapida ................................ Italiano-3

Funzioni .................................................. Italiano-5

Menu Principale OSD ............................. Italiano-6

Uso consigliato ....................................... Italiano-8

Soluzione dei problemi più comuni ....... Italiano-10

Waarschuwing, Let op! .................... Nederlands-1

Kennisgeving ................................... Nederlands-1

Aan de slag ..................................... Nederlands-2

De monitor afstellen ........................ Nederlands-2

Snel installeren ................................ Nederlands-3

Werking ........................................... Nederlands-5

Hoofdschermmenu .......................... Nederlands-6

Aanbevolen gebruik ......................... Nederlands-8

Problemen oplossen ...................... Nederlands-10

Uwagi dotyczàce zasilania monitora ........ Polski-1

Ostrze˝enie, Uwaga ................................. Polski-2

OÊwiadczenie ........................................... Polski-2

Poczàtek pracy ......................................... Polski-3

Ustawianie monitora ................................. Polski-3

Szybka instalacja ...................................... Polski-4

Obs∏uga monitora ..................................... Polski-6

G∏ówne menu ekranowe (OSD) ............... Polski-7

Zalecenia eksploatacyjne ......................... Polski-9

Usuwanie usterek ................................... Polski-11

Предупреждение, Внимание ............. Русский-1

Заявление ........................................... Русский-1

Приступая к работе ............................ Русский-2

Настройка монитора .......................... Русский-2

Быстрая установка............................. Русский-3

Эксплуатация ...................................... Русский-5

Главное меню OSD ............................. Русский-6

Рекомендации по эксплуатации ........ Русский-8

Устранение неисправностей ........... Русский-10

D∂kkat, Uyari ............................................ Türkçe-1

Bildirim .....................................................Türkçe-1

Baµlarken ................................................ Türkçe-2

Monitörü Ayarlama................................... Türkçe-2

H∂zl∂ Kurulum ........................................... Türkçe-3

∑µlemler .................................................... Türkçe-5

OSD Ana Menü ....................................... Türkçe-6

Tavsiye Edilen Kullan∂m .......................... Türkçe-8

Sorun Giderme ...................................... Türkçe-10

1-29

English

âesky

Deutsch

Ελληνικά

Español

Français

Italiano

Nederlands

Polski

Русский

Türkçe

1-30

English

English-1

Declaration

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.

WARNING

CAUTION

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.

Declaration of the Manufacturer

We hereby certify that the colour monitor
MultiSync LCD1920NX
is in compliance with

Council Directive 73/23/EEC:

– EN 60950

Council Directive 89/336/EEC:

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

and marked with

NEC-Mitsubishi Electric Visual

Systems Corporation

4-13-23, Shibaura,

Minato-Ku

Tokyo 108-0023, Japan

1-31

English-2

Getting Started

Congratulations on your purchase of this TFT LCD Monitor.

Please read this section carefully to get instant understanding of this product and its correct operations.

Important! Please keep the original carton and all packing materials for future shipping needs.

Package Contents

Your TFT LCD Monitor package includes the following items:

• 19” TFT LCD Colour Monitor

• Signal cable with 15 pin D-Sub connector

• AC Adapter

• Power cord

• User’s Manual

• CD-ROM

Unique Features

• 8-bit panel, supporting 16.7M true colours.

• High brightness & high contrast, providing more vivid images.

• Built-in both analog and digital interfaces.

• TCO’99 and TCO’95 approved.

• Composite sync and compatibility.

• Five languages in OSD (On Screen Display).

• 9-stage smoothing function.

• Supports 19 sets of factory preset modes and 32 sets of user’s automatically saved modes.

• Wide Viewing Angle.

Adjusting the Monitor

Press down on the stand and gently adjust the monitor to a suitable viewing angle (see Figure below). Please note that this
monitor can only be tilted forward to 5 degrees, backward to 20 degrees, and swiveled 90 degrees left/right. To prevent
damage to the monitor, do not press the screen over its tolerant angles.

1-32

English

English-3

Quick Installation

• Make sure the computer is turned off.

• Attach the female end of the power cord (Indication E) to the AC adapter (Indication D), then plug the AC adapter
connector to the power “DC-IN (Indication A)” jack of the LCD monitor.

• When using a power cord, plug the male end into the wall socket.

• Plug one end of the 15 pin D-Sub signal cable (Indication F) in the “D-SUB” video signal connector (Indication B) of
LCD monitor. If you use digital signal, plug one end of the 24 pin DVI-D signal cable (Indication G) in the “DVI-D” video
signal connector (Indication C) of LCD monitor.

• Turn on the computer.

• Turn on the LCD monitor.

• Before your operations of the monitor, please refer to P.6 “Operations” first.

A. DC In

B. D-SUB

C. DVI-D

D. AC Adapter

E. Power Cord

F. D-Sub Signal Cable

NOTE : When operating this LCD monitor with an AC125-240V power source, please refer to “Recommended Use”

for proper power code selection. Use supplied AC Adapter.

C

A

B

F

E

D

Connector cover

1-33

English-4

Quick Installation -

continued

Remove Monitor Stand for Mounting

To prepare the monitor for alternate mounting purposes:

1. Disconnect all cables.

2. Place monitor face down on a non-abrasive surface (Figure R.1).

3. Remove the 4 screws connecting the monitor to the stand and lift off

the stand assembly (Figure R.1).The monitor is now ready for
mounting in an alternate manner.

4. Connect the AC cord and signal cable to the back of the monitor.

5. Reverse this process to reattach stand.

NOTE: Use only VESA-compatible alternative mounting method.

6. This LCD monitor is designed for use with a flexible arm.

Please use the attached screws (4pcs) as shown in the picture when
installing.

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).

Figure R.1

Non-abrasive
surface

Thickness of Bracket (Arm)

2.0~3.2mm

Tighten all screws

100mm

Replace screws.

100mm

1-34

English

English-5

Operations

Push the power button (Indication E) on the front of the LCD monitor to turn it on. When the power light (Indication F) turns
green, the LCD is ready to use. Push the power switch button to turn off.

Function Keys

A. MENU 1. Press this button to turn on the OSD (On Screen Display) main menu.

2. Press this button to activate selected items.

3. Press this button 2 seconds or more to turn off the main menu.

B. [–] 1. To scroll down the menu.

2. To decrease the value of selected item.

C. [+] 1. To scroll up the menu.

2. To increase the value of selected item.

D. AUTO Press this button to activate “AUTO SYNC” function.

E. Power switch Press this button to turn on/off the monitor.

F. Power LED When the light is green, the power is on; amber light is when the power is off or in power saving

mode.

Hot Keys

• Auto-Sync: Press the [AUTO] button to activate Auto-Sync under any circumstances.

• Auto-Contrast: Press the [+] button to activate the Auto-Contrast adjustment.

• Change Signal Input: Press the [–] button to change the signal input, “DVI” or “D-SUB”.

A B C D

F

E

1-35

English-6

OSD Main Menu

For screen adjustments, press the [MENU] button to display the OSD (On-Screen Display) Main Menu shown below. Press the
[+] or [–] button to scroll up or down the menu to your required options. Please note that the OSD will automatically turn off in
30 seconds without any manipulation or by simply pressing the [MENU] button for 2 seconds.

CONTRAST: Adjusting the contrast level of the screen image. Under Main Menu, select CONTRAST using the [+] or

[–] button, then press [MENU] button to activate the function. Press the [+] button to increase contrast, [–] button to

decrease contrast shown below. Press [MENU] to return to Main Menu.

AUTO-CONTRAST: Automatically adjusts the contrast level of the screen image. Press [+] or [–] button to select AUTO

CONTRAST, then press [MENU] button to activate AUTO CONTRAST.

VIDEO ANALOG/DIGITAL: Switching between analog and digital input signal. Press [+] or [–] button to select VIDEO

ANALOG or VIDEO DIGITAL, then press [MENU] button to switch.

BRIGHTNESS: Adjusts the brightness level of the screen image. Under the Main Menu, select BRIGHTNESS using [+]

or [–] button, then press [MENU] button to activate the function. Press the [+] button to increase the brightness, [–]

button to decrease the brightness. Press [MENU] to return to Main Menu.

COLOUR Sub-Menu:

• Under the Main Menu, select COLOUR using the [+] or [–] button, then press [MENU] button to activate the COLOUR

Sub-Menu.

• Under the COLOUR Sub-Menu, press [+] or [–] button to scroll up or down to your desired preset colour mode. Then

press [MENU] to activate the mode.

• Or you may choose user’s mode by adjusting R, G, B respectively. Press the [+] or [–] button select R or G or B bar,

then press [MENU] to activate the adjustment. Press the [+] or [–] button to adjust the values, then press [MENU]

button to save the value and return to colour Sub-Menu to adjust another colour. After adjusting R, G, B colours, press

[MENU] to return to Main Menu.

MAIN MENU: Returning to OSD main menu. Press [+] or [–] button to select MAIN MENU, then press [MENU]

button to return to OSD Main Menu.

LCD ADJUST Sub-Menu (Analog input only): Under the Main Menu, select LCD ADJUST using the [+] or [–] button,

then press [MENU] button to enter LCD ADJUST Sub-Menu.

PC/MAC: Switching between PC at 800 X 600 resolution and MAC at 832 X 624 resolution, using [+] or [–]

button. Then press [MENU] to initiate the switch between PC and MAC shown as above.

H SIZE: Adjusting the width of the screen image. Select H-SIZE, using [+] or [–] button, then press [MENU]

button to activate thefunction. Press [+] button to increase the width of the screen image, press [–] button to

decrease the width of the screen image shown below. Press [MENU] to return to LCD ADJUST Sub-Menu.

H - POSITION: Moving the screen image to the right or left. Select H - POSITION using the [+] or [–] button,

then press the [MENU] button to activate the function. Press [+] button to move the screen to the right, [–] button

to move to the left. Press [MENU] to return to LCD ADJUST Sub-Menu.

V - POSITION: Moving the screen image up or down. Select V - POSITION using the [+] or [–] button, then

press [MENU] to activate the function. Press [+] button to move the screen image up, [–] button to move down.

Press [MENU] to return to LCD ADJUST Sub-Menu.

FINE TUNE: Aligning the performance slightly. Select FINE TUNE using the [+] or [–] button, then press [MENU]

button to activate the function. Press [+] or [–] button until the screen image looks crisp, sharp and focused.

Press [MENU] to return to LCD ADJUST Sub-Menu.

AUTO-SYNC: Automatically adjusts the image to the best performance. Press [+] or [–] button to select AUTO

SYNC, then press [MENU] button to activate AUTO SYNC.

NOTE: • When setting up this monitor for the first time, perform AUTO-SYNC before use.

• To perform AUTO-SYNC, first display an image that makes the entire screen very bright.

MAIN MENU: Returning to OSD main menu. Press [+] or [–] button to select MAIN MENU, then press [MENU]

button to return to OSD Main Menu.

1-36

English

English-7

LANGUAGE: Selecting preferred language used in the OSD menus. Under Main Menu, scroll to Language using [+] or

[–] button, then press [MENU] button to activate the function. Press [+] or [–] button to choose preferred Language,

then press [MENU] to return to Main Menu.

MAIN MENU: Returning to OSD main menu. Press [+] or [–] button to select MAIN MENU, then press [MENU]

button to return to OSD Main Menu.

MISC Sub-Menu

Under the Main Menu, select MISC using the [+] or [–] button, then press [MENU] button to enter MISC Sub-Menu.

RESOLUTION NOTIFIER: This optimal resolution is 1280 x 1024. If ON is selected, a message will appear on

the screen after 30 seconds, notifying you that the resolution is not at 1280 x 1024.

H-OSD POSITION: Moving the OSD position on the screen to the right or left. Select H-OSD POSITION using

[+] or [–] button, then press [MENU] button to activate the function. Press the [+] button to move the OSD

position to the right, [–] button to move left. Then press [MENU] to return to MISC Sub-Menu.

V-OSD POSITION: Moving the OSD position on the screen up or down. Select V-OSD POSITION using [+] or

[–] button, then press [MENU] button to activate the function. Press the [+] button to move the OSD position up,

[–] button to move down. Then press [MENU] to return to MISC Sub-Menu.

SMOOTHING: Making the displayed texts smooth. Select SMOOTHING using [+] or [–] button, then press

[MENU] button to activate the function. Press [+] or [–] button and adjust to your liking. Press [MENU] button

to return to MISC Sub-Menu.

INVISIBLE: Activating the OSD background to be invisible. Select INVISIBLE using the [+] or [–] button, then

press [MENU] button to select either On or Off option.

INFORMATION: Displaying the timing mode (video signal input) coming from the graphics card in the computer.

Select INFORMATION using the [+] or [–] button, then press [MENU] to display the mode. Then press [MENU]

button to return to MISC Sub-Menu.

RECALL: Returning the adjustments back to factory settings if the monitor is not operating at its original factory

settings. Select RECALL using the [+ or [–] button, then press [MENU] button to reset the settings.

MAIN MENU: Returning to OSD main menu. Press [+] or [–] button to select MAIN MENU, then press [MENU]

button to return to OSD Main Menu.

EXIT: Turning off the OSD. Select EXIT using the [+] or [–] button, then press [MENU] to exit the OSD.

OSD Warning

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 MISC Sub-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.

1-37

English-8

Recommended Use

Safety Precautions and Maintenance

FOR OPTIMUM PERFORMANCE, PLEASE NOTE THE

FOLLOWING WHEN SETTING UP AND USING

THE MULTISYNC 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.

• The power supply cord you use must have been approved by and comply with the safety standards of your country. (Type
H05VV-F should be used in Europe), and matches the power supply voltage of the AC outlet being used.

• In UK, use a BS-approved power cord with molded plug having a black (5A) fuse installed for use with this monitor. If a
power cord is not supplied with this monitor, please contact your supplier.

Note: Use the supplied AC power cord. If it does not match the shape and the voltage of AC power outlet being used,
please refer to the Recommended Use section for proper use of the AC power cord.

• Use supplied AC Adapter. Do not place any objects onto the AC Adapter and do not use the AC Adapter outdoors.

• 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.

• If glass is broken, handle with care.

• Do not cover vent on monitor.

• 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 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:

• 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 16 inches and no further away than
28 inches from your eyes. The optimal distance is 23 inches.

• Rest your eyes periodically by focusing on an object at least 20 feet 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.

CAUTION

1-38

English

English-9

• If reflected light makes it hard for you to see your screen, use an anti-glare 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.

• 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

1-39

English-10

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 the LED of AC adapter is ON.

• 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

• Image persistence is when a “ghost” of an image remains on the screen even after the monitor has been turned off.

Unlike CRT monitors, LCD monitors’ image persistence is not per manent. To alleviate image persistence, turn the
monitor off for as long as an image was displayed. If an image was on the monitor for one hour and a “ghost” of that
image remains, the monitor should be turned off for one hour to erase the image.

NOTE: As with all personal display devices, NEC-Mitsubishi Electronics Display recommends using a screen
saver at regular intervals whenever the screen is idle.

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 total. 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.

LED on monitor is not lit (no green or amber colour can be seen)

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

• Check the LED of AC adapter is ON.

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

Display image is not sized properly

• Use the OSD Image Adjust controls to increase or decrease the Coarse total.

• 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.

2-1

Serial Number Information

Refer to the serial number information shown below.

g g g g g g g g g

Manufactured Year :
( Last digit )

Manufactured Month :

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

Factory Code :

Q: AmTRAN Taiwan factory

Control Code :

A: A ver.
B: B ver.

EX.) SERIAL NUMBER LABEL

Model : LCD1920NX

: LCD1920NX-BK

SERIAL NO. :

Serial number (5 digits)

White model : 00001 ~ 49999
Black model : 50001 ~ 99999

Sequential number at production month.

3-1

DISASSEMBLY

g Before you disassemble the set, turn off power and pull out the power plug.

g Use the proper screwdriver. If oversize or undersize screwdriver is used, screws may be damaged.

g Assembly is the opposite process of disassembly.

SYMBOL CODE DESCRIPTION COLOR

1 79PZ0164 HINGE COVER LCD1920NX White
1 79PZ0010 HINGE COVER LCD1920NX ( Black
2 --- MAC. SCREW-MPSWF M4.0*10.0L,ZN

1

2

3-2

SYMBOL CODE DESCRIPTION

3 --- TAP. SCREW-TB #3.0*10.0L,NI

SYMBOL CODE DESCRIPTION COLOR

4 79PZ0166 BACK COVER CAB. LCD1920NX White
4 79PZ0172 BACK COVER CAB. LCD1920NX Black

3

4

3-3

SYMBOL CODE DESCRIPTION

5 --- MAC. SCREW-MB M3.0*4.0L,Zn-Cc

SYMBOL CODE DESCRIPTION

6 --- MAC. SCREW-MRFW M3.0*4.0L,NI
7 --- NUT #4-40*5.0L (BRONZE + Ni)
8 79PZ0014 LCD MAIN BD ASS'Y
9 79PZ0008 INVERTER DC-AC T65I008.00

W05

W04

5

9

8

W07

7

6

CN5 CN4

CN1

CN2 CN3

3-4

SYMBOL CODE DESCRIPTION

10 --- TAP. SCREW-TB #3.0*10.0L,NI
11 79PZ0013 LCD DISPLAY BD ASS'Y

SYMBOL CODE DESCRIPTION COLOR

10 --- TAP. SCREW-TB #3.0*10.0L,NI
12 79PZ0165 PANEL CAB. LCD1920NX (NEC White
12 79PZ0171 PANEL CAB. LCD1920NX (NEC Black

10

W1

10

4

12

3-5

SYMBOL CODE DESCRIPTION COLOR

13 79PZ0162 POWER BUTTON LCD1920NX White
13 79PZ0009 POWER BUTTON LCD1920NX Black
12 79PZ0165 PANEL CAB. LCD1920NX (NEC White
12 79PZ0171 PANEL CAB. LCD1920NX (NEC Black

SYMBOL CODE DESCRIPTION

14 --- MAC.SCREW-MBSFW M3.0*12.0L.Zn-Cc

13

12

14

3-6

SYMBOL CODE DESCRIPTION

15 79PZ0004 LCD MODULE 19.0 TFT FLC4"

15

3-7

SYMBOL CODE DESCRIPTION COLOR

16 --- MAC. SCREW-MPSWF M4.0*10.0L,ZN
17 --- HINGE LEFT LCD1920NX
18 --- HINGE RIGHT LCD1920NX
19 79PZ0163 BASE CAB. LCD1920NX White
19 79PZ0001 BASE CAB. LCD1920NX Black

SYMBOL CODE DESCRIPTION

20 79PZ0032 BASE FOOT (18.0*3.0T)
21 79PZ0003 BASE ROTATE LCD1920NX
21 --- SWIVEL SHEET (187*0.5)
22 --- MAC. SCREW-MB M3.0*4.0L,Zn-Cc

19

16

18

17

20

21

22

22

3-8

SYMBOL CODE DESCRIPTION

23 --- BASE BRACKET + HINGE HOLDER LCD1920NX
24 --- MAC. SCREW-MB M3.0*4.0L,Zn-Cc

23

24

4-1

ADJUSTMENT PROCEDURES

TABLE OF CONTENTS

Page

1. Application ........................................................................................................................... 4-2

2. Basic operation .................................................................................................................... 4-2

2.1 General conditions ............................................................................................................. 4-2

2.2 Basic operation .................................................................................................................. 4-2

2.2.1 Video input change ......................................................................................................... 4-2

2.2.2 Factory mode .................................................................................................................. 4-3

3. Set adjustments ................................................................................................................... 4-4

3.1 Application ......................................................................................................................... 4-4

3.2 Source voltage ................................................................................................................... 4-4

3.3 Adjustments ....................................................................................................................... 4-4

3.3.1 Connection ...................................................................................................................... 4-4

3.3.2 Data writing procedures .................................................................................................. 4-5

3.4 Input video signal ............................................................................................................... 4-6

3.5 Setting before shipment ..................................................................................................... 4-7

4-2

1. Application

This specification shall be applied to the adjustment of the LCD1920NX set.

2. Basic operation

2.1 General conditions

Unless otherwise specified, adjustments shall be carried out under the following conditions:

1) Power source voltage : AC 100 - 120V/ 220 - 240V ± 10%, 50/60Hz

2) Equipment to be used : Equipment that can generate an output of the adjusted LCD1920NX unit or
equivalent.

3) Connections : Connections are made to the D-SUB connector of the unit under inspection by
means of the connector that can carry each output of the LCD1920NX. The
VIDEO IN of the unit being inspected shall be changed over through D-SUB
according to the instructions given in each item.

2.2 Basic operation

2.2.1 Video input change

Irrespective of the presence of any signal input, the video input can be auto change by CPU if input only one
source (digital or analog). The signal received first is displayed. An input change can also push the [-] button,
when the OSD menu "VIDEO (ANALOG/DIGITAL)" or the OSD menu is not displayed.

4-3

2.2.2 Factory mode

At the time of adjustment of this model, a suggestion may be given to enter the user (factory) mode. This will
be explained below.

(1) User mode:

1) Press the power Key and verify that LED is green. Press MENU to into OSD MENU.

2) Select COLOR and into color adjust.

3) PRESET1 and PRESET2 is factory setting value user cannot adjust it.

4) Select any one of R G B and into user mode color adjust, press [+] and [-] to adjust color.

(2) Factory mode:

1) Power off the monitor.

2) Press the MENU : AUTO and POWER key at the same until LED is green entered into the Factory
mode.

3) Press MENU key to display the OSD menu, and select the PRESET2 color temperature. Please do not

adjust it because the value is factory value.

4) Select MAIN MENU → MISC → INFORMATION → [+] or [-] key and into HOURS RUNNING mode. It

will show :

a. USER ON : It means monitor used time by user.

b. USER OFF : It means monitor standard by (power saving) and off time by user.

c. FAC. ON : It means monitor used time since assembled in factory.

d. FAC. OFF : It means monitor standard by (power saving) and off time since assembled in factory.

e. CPU TYPE : MTV112MN32

f. CPU CODE : Code of CPU

g. CPU VER. : CPU update date.

Note: To return to user mode from factory mode, just power OFF → ON again.

4-4

3. Set adjustments

3.1 Application

This adjustment specification is applicable when the LCD MAIN BD ASSY (MAIN PWB) or the E2PROM is
replaced.

3.2 Source voltage

100-120V / 220-240V ±10% 50 / 60Hz

3.3 Adjustments

Using DDC-2Bi communication, the initial value data of the color temperature 9300K are written in.

3.3.1 Connection

(1) Configuration

The unit configuration and the method of connection for this system are described below.

DDC

communication

I/F BOAD

Signal Cable

Signal Cable

Printer Cable

(Jig)

Signal Generator

DESKTOP/NOTE

PC

Monitor

Program Disk

Part No.599910541

Part No. 599910602

CN7

CN6

CN5

CN4

CN3

DC +5V

D-SUB

(2) Input signal

VESA 1280 × 1024@60Hz (all white pattern)

(3) Program required

RGB adjust software (Part No. 599910602)

4-5

3.3.2 Data writing procedures

(1) Connect the data writing unit, jigs, and others for the reception of VESA 1280 × 1024@60Hz (all white).

(2) Let the data writing unit stay in the factory mode. (Refer to 2.2.2 User service mode / factory mode)

(3) Copy all the files of RGB Adjust Software in an appropriate directory.

(4) Execute RGB_ADJ.EXE from the command line.

(5) When the screen as shown in Fig. 1 appears, press the ENTER key to write the data.

Fig. 1 Fig. 2

(6) When the screen as shown in Fig. 2 is displayed in the mean time and normal data writing is finished, the

screen as shown in Fig. 3 is displayed.

Fig. 3

(7) Turn off the POWER switch of the writing unit and turn it on again, so that the user mode is assumed.

(8) Display the OSD menu and execute [AUTO CONTRAST].

4-6

3.4 Input video signal

Preset Mode No. 1

Signal Name

VESA

1280*1024

(60)

Resolution 1280*1024

Dot Clock (MHz) 108.000

fh

(

kHz) 63.981

fv (Hz) 60.020

Tot al

(

dot) 1688

(uS) 15.630

Disp (dot) 1280

(uS) 11.852

Front (dot) 48

(uS) 0.444

Sync Pulse (dot) 112

(uS) 1.037

Back (dot) 248

(uS) 2.296

Tot al

(H)

1066

(mS) 16.661

Disp (H) 1024

(mS) 16.005

Front (H) 1

(mS) 0.016

Sync Pulse (H) 3

(mS) 0.047

Back (H) 38

(mS) 0.594

Interlace

NON

Polarity (H/V) POS/POS

Composite Sync

Composite Video

Character Font 7*9

Serration

OFF

EQP

OFF

4-7

3.5 Setting before shipment

CONTRAST : Approx. 60% (with an analog signal input) / Approx. 80% (with a

digital signal input)

BRIGHTNESS : Approx. 80%

COLOR : R, G, B at MAX. in all cases (User)

LANGUAGE : ENGLISH

RESOLUTION NOTIFIER : ENABLE

H-OSD POSITION / V-OSD POSITION : Center of the screen

SMOOTHING : 5 / 9 steps

INVISIBLE : ON

5-1

INSPECTION

TABLE OF CONTENTS

Page

1. Set Inspection .......................................................................................................... 5-2

1.1 Application ............................................................................................................. 5-2

1.2 Inspection conditions ............................................................................................ 5-2

1.2.1 Power source voltage ......................................................................................... 5-2

1.2.2 Equipment to be used ........................................................................................ 5-2

1.2.3 Brightness setting .............................................................................................. 5-2

1.2.4 Inspection mode ................................................................................................. 5-2

1.2.5 OSD functions ..................................................................................................... 5-2

1.2.6 Configuration of inspection jigs ....................................................................... 5-2

1.2.7 Inspection mode setting .................................................................................... 5-3

1.3 Operational description of OSD control ............................................................ 5-12

1.3.1 Function of each button ................................................................................... 5-12

1.3.2 Procedures for the basic operation ................................................................ 5-12

1.4 POWER ON ........................................................................................................... 5-13

1.5 Inspection ............................................................................................................. 5-13

1.5.1 Inspection of LCD brightness and contrast ................................................... 5-13

1.5.2 Inspection of automatic adjustment function ................................................ 5-14

1.5.3 Inspection of input signal discrimination ...................................................... 5-15

1.5.4 Inspection of VIDEO DETECT function .......................................................... 5-16

1.6 Setting before shipment ...................................................................................... 5-16

2. External inspection on the LCD module ............................................................. 5-17

2.1 External inspection of the display surface ....................................................... 5-17

2.1.1 Inspection items ............................................................................................... 5-17

2.1.2 Inspection standards ........................................................................................ 5-17

3. Inspection of PLUG & PLAY communication and

OSD for model name/ serial number .................................................................... 5-20

3.1 System Connection ............................................................................................. 5-20

3.2 Input Signal .......................................................................................................... 5-20

3.3 Operational procedures ...................................................................................... 5-21

3.4 EDID data file ........................................................................................................ 5-22

5-2

1. Set Inspection

1.1 Application

The inspection procedures specified in this item shall be applied to the inspection of the LCD1920Nx unit.

1.2 Inspection conditions

Unless otherwise specified, inspection shall be carried out under the following conditions.

1.2.1 Power source voltage

AC voltage: 100 - 120V/220 - 240V ± 10% 50/60Hz

1.2.2 Equipment to be used

The signal generator VG-819 which can generate an adjustable output or equivalent can be used.

The signal timing for the inspection ROM shall conform to the table provided in Paragraph 1.2.8 herein.

1.2.3 Brightness setting

Unless otherwise specified, all the inspection shall be carried out under the condition that the LCD
brightness is set at the highest level.

1.2.4 Inspection mode

Each inspection shall be carried out in the inspection mode specified in each relevant inspection item.

The detailed setting for each mode shall be specified in Paragraph 1.2.7 herein.

1.2.5 OSD functions

If checking and operation by OSD are specified in each inspection item, display and operation of the OSD
shall be carried out by operating the buttons of the unit under inspection, according to the instructions.

Outline operation is described in Item 1.3, “Operation of OSD control.”

1.2.6 Configuration of inspection jigs

1) A video signal generator shall be used, which can generate an output of the VG-819 unit or equivalent.

2) Graphic Board, Model : Matrox Millennium G550 (Manufactured Matrox Electronic Systems Ltd.)

3) PC/AT interchange personal computer.

4) DVI-D to DVI-D Signal Cable.

5-3

1.2.7 Inspection mode setting

The respective setting data shall be the data for the VG-819.

Signal VG-819 setting values

Mode 01 02 03

Not used

04 05

H CLOCK

HPERIOD
HDISP
HSYNC
HBACKP
HDSTART
HDWIDTH

[MHz]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]

28.322
900
720
108
54
0
0

35.500
936
720
72
108
0
0

21.053
848
640
64
84
0
0

28.322
900
720
108
54
0
0

35.500
936
720
72
108
0
0

V VTOTAL

VDISP
VSYNC
VBACKP
EQP FP
EQP BP
SERRATION
EQP
VDSTART
VDLINE
SCAN

[H]
[H]
[H]
[H]
[H]
[H]

[H]
[H]

449
350
2
60
0
0
OFF
OFF
0
0
Nonint

446
350
3
61
0
0
OFF
OFF
0
0
Nonint

440
400
8
25
0
0
OFF
OFF
0
0
Nonint

449
400
2
35
0
0
OFF
OFF
0
0
Nonint

446
400
3
42
0
0
OFF
OFF
0
0
Nonint

OUTPUT NRZ/RZ

HS
VS
CS
HD
VD
CLOCK
SYNC ON
RGB
VIDEO
SETUP
CLKMODE
CLKOUT
DISP,1CH,2CH
SW0,SW1
RGB
R(7-0),G(7-0),B(7-0)
DELAY
CLOCK DELAY

NRZ
POSI
NEGA
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
NEGA
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
NEGA
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON

4 nsec
PAT SEL OPTION 2 OPTION 2 OPTION 2 OPTION 2 OPTION 2
CHRA
PATTERN

Format
Code
Font
Cell

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1

82

16*16

16*16
GRAY Direction : 0 L0: 0

L7: 127
LE: 239

L1: 17
L8: 143
LF: 255

L2: 34
L9: 159

L3: 51
LA: 175

L4: 68
LB: 191

L5: 85
LC: 207

L6: 102
LD: 223

OPTION 2 (Note 2)

5-4

Signal VG-819 setting values
Mode 06 07 08 09 10
H CLOCK

HPERIOD
HDISP
HSYNC
HBACKP
HDSTART
HDWIDTH

[MHz]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]

25.18
800
640
96
48
0
0

30.24
864
640
64
96
0
0

31.5
832
640
40
128
0
0

31.5
840
640
64
120
0
0

36.0
832
640
56
80
0
0

V VTOTAL

VDISP
VSYNC
VBACKP
EQP FP
EQP BP
SERRATION
EQP
VDSTART
VDLINE
SCAN

[H]
[H]
[H]
[H]
[H]
[H]

[H]
[H]

525
480
2
33
0
0
OFF
OFF
0
0
Nonint

525
480
3
39
0
0
OFF
OFF
0
0
Nonint

520
480
3
28
0
0
OFF
OFF
0
0
Nonint

500
480
3
16
0
0
OFF
OFF
0
0
Nonint

509
480
3
25
0
0
OFF
OFF
0
0
Nonint

OUTPUT NRZ/RZ

HS
VS
CS
HD
VD
CLOCK
SYNC ON
RGB
VIDEO
SETUP
CLKMODE
CLKOUT
DISP,1CH,2CH
SW0,SW1
RGB
R(7-0),G(7-0),B(7-0)
DELAY
CLOCK DELAY

NRZ
NEGA
NEGA
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
NEGA
NEGA
NEGA
NEGA
NEGA
G
POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
NEGA
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
NEGA
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
NEGA
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON

4 nsec
PAT SEL OPTION 2 OPTION 2 OPTION 2 OPTION 2 OPTION 2
CHRA
PATTERN

Format
Code
Font
Cell

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1

82

16*16

16*16
GRAY Direction : 0 L0: 0

L7: 127
LE: 239

L1: 17
L8: 143
LF: 255

L2: 34
L9: 159

L3: 51
LA: 175

L4: 68
LB: 191

L5: 85
LC: 207

L6: 102
LD: 223

OPTION 2 (Note 2)

5-5

Signal VG-819 setting values
Mode 11 12 13 14 15
H CLOCK

HPERIOD
HDISP
HSYNC
HBACKP
HDSTART
HDWIDTH

[MHz]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]

36.0
1024
800
72
128
0
0

40.0
1056
800
128
88
0
0

49.5
1056
800
80
160
0
0

50.0
1040
800
120
64
0
0

56.25
1048
800
64
152
0
0

V VTOTAL

VDISP
VSYNC
VBACKP
EQP FP
EQP BP
SERRATION
EQP
VDSTART
VDLINE
SCAN

[H]
[H]
[H]
[H]
[H]
[H]

[H]
[H]

625
600
2
22
0
0
OFF
OFF
0
0
Nonint

628
600
4
23
0
0
OFF
OFF
0
0
Nonint

625
600
3
21
0
0
OFF
OFF
0
0
Nonint

666
600
6
23
0
0
OFF
OFF
0
0
Nonint

631
600
3
27
0
0
OFF
OFF
0
0
Nonint

OUTPUT NRZ/RZ

HS
VS
CS
HD
VD
CLOCK
SYNC ON
RGB
VIDEO
SETUP
CLKMODE
CLKOUT
DISP,1CH,2CH
SW0,SW1
RGB
R(7-0),G(7-0),B(7-0)
DELAY
CLOCK DELAY

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON

4 nsec
PAT SEL OPTION 2 OPTION 2 OPTION 2 OPTION 2 OPTION 2
CHRA
PATTERN

Format
Code
Font
Cell

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1

82

16*16

16*16
GRAY Direction : 0 L0:0

L7:127
LE:239

L1:17
L8:143
LF:255

L2:34
L9:159

L3:51
LA:175

L4:68
LB:191

L5:85
LC:207

L6:102
LD:223

OPTION 2 (Note 2)

5-6

Signal VG-819 setting values
Mode 16 17 18 19 20
H CLOCK

HPERIOD
HDISP
HSYNC
HBACKP
HDSTART
HDWIDTH

[MHz]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]

57.28
1152
832
64
224
0
0

65.0
1344
1024
136
160
0
0

70.49
1344
1024
136
160
0
0

75.0
1328
1024
136
144
0
0

78.75
1312
1024
96
176
0
0

V VTOTAL

VDISP
VSYNC
VBACKP
EQP FP
EQP BP
SERRATION
EQP
VDSTART
VDLINE
SCAN

[H]
[H]
[H]
[H]
[H]
[H]

[H]
[H]

667
624
3
39
0
0
OFF
OFF
0
0
Nonint

806
768
6
29
0
0
OFF
OFF
0
0
Nonint

806
768
6
29
0
0
OFF
OFF
0
0
Nonint

806
768
6
29
0
0
OFF
OFF
0
0
Nonint

800
768
3
28
0
0
OFF
OFF
0
0
Nonint

OUTPUT NRZ/RZ

HS
VS
CS
HD
VD
CLOCK
SYNC ON
RGB
VIDEO
SETUP
CLKMODE
CLKOUT
DISP,1CH,2CH
SW0,SW1
RGB
R(7-0),G(7-0),B(7-0)
DELAY
CLOCK DELAY

NRZ
NEGA
NEGA
POSI
POSI
POSI
POSI
G
POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
NEGA
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
NEGA
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
NEGA
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA
G
POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON

4 nsec
PAT SEL OPTION 2 OPTION 2 OPTION 2 OPTION 2 OPTION 2
CHRA
PATTERN

Format
Code
Font
Cell

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1

82

16*16

16*16
GRAY Direction : 0 L0:0

L7:127
LE:239

L1:17
L8:143
LF:255

L2:34
L9:159

L3:51
LA:175

L4:68
LB:191

L5:85
LC:207

L6:102
LD:223

OPTION 2 (Note 2)

5-7

Signal VG-819 setting values

Mode 21 22 23 24 25

Not used

H CLOCK

HPERIOD
HDISP
HSYNC
HBACKP
HDSTART
HDWIDTH

[MHz]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]

94.5
1376
1024
96
208
0
0

94.50
1528
1152
128
208
0
0

108.00
1800
1280
112
312
0
0

126.00
1680
1280
144
224
0
0

107.50

1664

1280

192

160

0

0
V VTOTAL

VDISP
VSYNC
VBACKP
EQP FP
EQP BP
SERRATION
EQP
VDSTART
VDLINE
SCAN

[H]
[H]
[H]
[H]
[H]
[H]

[H]
[H]

808
768
3
36
0
0
OFF
OFF
0
0
Nonint

937
900
4
31
0
0
OFF
OFF
0
0
Nonint

1000
960
3
36
0
0
OFF
OFF
0
0
Nonint

1000
960
3
36
0
0
OFF
OFF
0
0
Nonint

1078

1024

4

43

0

0

OFF

OFF

0

0

Nonint
OUTPUT NRZ/RZ

HS
VS
CS
HD
VD
CLOCK
SYNC ON
RGB
VIDEO
SETUP
CLKMODE
CLKOUT
DISP,1CH,2CH
SW0,SW1
RGB
R(7-0),G(7-0),B(7-0)
DELAY
CLOCK DELAY

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
NEGA
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ

POSI

POSI

NEGA

NEGA

NEGA

NEGA

POSI

0.70V

OFF

1/2

ALL

POSI

OFF

8 bit

11111111

ON

4 nsec
PAT SEL OPTION 2 OPTION 2 OPTION 2 OPTION 2 OPTION 2
CHRA
PATTERN

Format
Code
Font
Cell

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1

82

16*16

16*16
GRAY Direction : 0 L0:0

L7:127
LE:239

L1:17
L8:143
LF:255

L2:34
L9:159

L3:51
LA:175

L4:68
LB:191

L5:85
LC:207

L6:102
LD:223

OPTION 2 (Note 2)

5-8

Signal VG-819 setting values
Mode 26 27 28 29 30
H CLOCK

HPERIOD
HDISP
HSYNC
HBACKP
HDSTART
HDWIDTH

[MHz]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]

108.00
1688
1280
112
248
0
0

117.00
1632
1280
112
224
0
0

135.00
1688
1280
144
248
0
0

135.00
1664
1280
64
288
0
0

94.50
1480
1152
96
200
0
0

V VTOTAL

VDISP
VSYNC
VBACKP
EQP FP
EQP BP
SERRATION
EQP
VDSTART
VDLINE
SCAN

[H]
[H]
[H]
[H]
[H]
[H]

[H]
[H]

1066
1024
3
38
0
0
OFF
OFF
0
0
Nonint

1067
1024
8
33
0
0
OFF
OFF
0
0
Nonint

1066
1024
3
38
0
0
OFF
OFF
0
0
Nonint

1066
1024
8
32
0
0
OFF
OFF
0
0
Nonint

912
864
3
44
0
0
OFF
OFF
0
0
Nonint

OUTPUT NRZ/RZ

HS
VS
CS
HD
VD
CLOCK
SYNC ON
RGB
VIDEO
SETUP
CLKMODE
CLKOUT
DISP,1CH,2CH
SW0,SW1
RGB
R(7-0),G(7-0),B(7-0)
DELAY
CLOCK DELAY

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
POSI
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
POSI
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
POSI
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON

4 nsec
PAT SEL OPTION 2 OPTION 2 OPTION 2 OPTION 2 OPTION 2
CHRA
PATTERN

Format
Code
Font
Cell

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1
82
16*16
16*16

1

82

16*16

16*16
GRAY Direction : 0 L0:0

L7:127
LE:239

L1:17
L8:143
LF:255

L2:34
L9:159

L3:51
LA:175

L4:68
LB:191

L5:85
LC:207

L6:102
LD:223

OPTION 2 (Note 2)

5-9

Signal VG-819 setting values
Mode 31 32 33 34 35
H CLOCK

HPERIOD
HDISP
HSYNC
HBACKP
HDSTART
HDWIDTH

[MHz]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]

108.00
1600
1152
128
256
0
0

162.00
2160
1600
192
304
0
0

108.00
1688
1280
112
248
0
0

V VTOTAL

VDISP
VSYNC
VBACKP
EQP FP
EQP BP
SERRATION
EQP
VDSTART
VDLINE
SCAN

[H]
[H]
[H]
[H]
[H]
[H]

[H]
[H]

900
864
3
32
0
0
OFF
OFF
0
0
Nonint

1250
1200
3
46
0
0
OFF
OFF
0
0
Nonint

1066
1024
3
6380
0
0
OFF
OFF
0
0
Nonint

OUTPUT NRZ/RZ

HS
VS
CS
HD
VD
CLOCK
SYNC ON
RGB
VIDEO
SETUP
CLKMODE
CLKOUT
DISP,1CH,2CH
SW0,SW1
RGB
R(7-0),G(7-0),B(7-0)
DELAY
CLOCK DELAY

NRZ
POSI
POSI
POSI
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
POSI
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
POSI
POSI
NEGA
NEGA
NEGA
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON

4 nsec
PAT SEL OPTION 2 OPTION 2 OPTION 2
CHRA
PATTERN

Format
Code
Font
Cell

1
82
16*16
16*16

1
82
16*16
16*16

1

82

16*16

16*16
GRAY Direction : 0 L0:0

L7:127
LE:239

L1:17
L8:143
LF:255

L2:34
L9:159

L3:51
LA:175

L4:68
LB:191

L5:85
LC:207

L6:102
LD:223

OPTION 2 (Note 2)

5-10

Signal VG-819 setting values
Mode 36 37 38 39 40
H CLOCK

HPERIOD
HDISP
HSYNC
HBACKP
HDSTART
HDWIDTH

[MHz]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]
[DOT]

34.40
800
640
96
48
0
0

34.40
800
640
96
48
0
0

V VTOTAL

VDISP
VSYNC
VBACKP
EQP FP
EQP BP
SERRATION
EQP
VDSTART
VDLINE
SCAN

[H]
[H]
[H]
[H]
[H]
[H]

[H]
[H]

1024

480
2
33
0
0
OFF
OFF
0
0
Nonint

1024
480
2
33
0
0
OFF
OFF
0
0
Nonint

OUTPUT NRZ/RZ

HS
VS
CS
HD
VD
CLOCK
SYNC ON
RGB
VIDEO
SETUP
CLKMODE
CLKOUT
DISP,1CH,2CH
SW0,SW1
RGB
R(7-0),G(7-0),B(7-0)
DELAY
CLOCK DELAY

NRZ

NEGA
POSI
NEGA
NEGA
POSI
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

NRZ
NEGA
NEGA
NEGA
NEGA
POSI
NEGA

POSI

0.70V
OFF
1/2
ALL
POSI
OFF
8 bit
11111111
ON
4 nsec

PAT SEL CHARA

CHARA

CHRA
PATTERN

Format
Code
Font
Cell

1

82
16*16
16*16

1
82
16*16
16*16

GRAY Direction : 0 L0:0

L7:127
LE:239

L1:17
L8:143
LF:255

L2:34
L9:159

L3:51
LA:175

L4:68
LB:191

L5:85
LC:207

L6:102
LD:223

5-11

Note 1:

According to the designation of sync signals and the setting of each inspection mode, the analog outputs
(BNC) of the signal generator shall be connected as specified below. (Except the cases when otherwise
specified)

1) SEPARATE: R/G/B CONNECTION, HS ←→ H, VS ←→ V, CS not connected

2) COMPOSITE: R/G/B CONNECTION, CS ←→ H No connections for HS and VS

3) SYNC ON GREEN: R/G/B CONNECTION, No connections for HS, VS, and CS

Note 2:

Option 2 Screen

5-12

1.3 Operational description of OSD control

Each OSD function is available by pressing the buttons (MENU, -, +, AUTO) located on the lower section of
the front bezel.

1.3.1 Function of each button

The basic function of each button (also called a key, but it bears the same meaning) is explained below.

In case of no OSD display, either buttons of MENU, -, + or AUTO may be pressed to display an OSD menu.

1) OSD function control

MENU : Displays the OSD and selecting the adjusting function by pressing this button or exiting the

OSD after keeping press this button.

- : Moves the cursor downward to select adjustment item after OSD menu is displayed or the
tab is moved leftward to decrease the adjusting value by pressing this button after the
adjustment function is selected.

+ : Moves the cursor upward to select adjustment item or the tab is moved to the right to

increase the adjusting value by pressing this button.

AUTO : The auto sync function is activated by pressing this button.

2) Hot key function control

MENU : Displays the OSD and selecting the adjusting function by pressing this button or

exiting the OSD after pressing this button.

DVI/D-SUB (-) : An input signal is selected by defining whether it should be picked up from the DVI

connector or the D-SUB connector. Each time this button is pressed directly, a change
takes place between the DVI connector and the D-SUB connector.

+ : The auto contrast function is activated by press this button directly.

AUTO : The auto sync function is activated by pressing this button.

Note: Unless otherwise specified, the D-SUB input should be used in each inspection.

1.3.2 Procedures for the basic operation

1) Press the MENU button and confirm that the main menu shown below is displayed.

2) The selection tab moves to the way down rolling and up rolling with the -down and +up buttons. When
the adjustment tab has been selected, select the adjustment item by the using the MENU button and
set up the adjusting value with the +right and -left buttons. In case when an adjustment item of
automatic adjustment function (AUTO-CONTRAST or AUTO-SYNC) has been selected, execute this
automatic adjustment by the using the MENU button.

3) When the inspection is over, press the MENU button for a while or select EXIT item to exit from the
OSD menu.

5-13

1.4 POWER ON

Turn on the power supply in the procedures specified below.

1) Make connections according to the mode in which the VG-819 cable is being set.

2) Turn on the POWER switch of the VG-819 unit.

3) Connect the AC POWER cord to the unit under inspection.

4) Turn on the POWER switch of the unit under inspection.

5) The LED of the unit under inspection is lit in yellow-green after turning on the power.

Note 1: When the POWER source switch is turned on for the first time, the initialization of EEPROM is

effected. In this period (about 5 seconds), the POWER switch must not be moved to the ON or
OFF position. Upon the completion of the initialization, a normal screen is displayed. (If no signal
input is entered, the “NO SIGNAL” OSD is displayed.)

Note 2: Since an electrified condition is assumed with the AC POWER cable left connected, connections

for the connectors should be carried out always under the condition that the AC POWER cord
plug has been pulled out.

1.5 Inspection

1.5.1 Inspection of LCD brightness and contrast

1) Enter input Signal 26 through the D-SUB port. This action makes the screen display in all white.

2) Display the OSD menu by pressing the MENU key and move the tab by pressing –down and +up keys.
Display the BRIGHTNESS adjustment screen by pressing MENU button.

3) Confirm that the white bar makes changes and the screen brightness is also changes when the +right
and -left buttons are operated.

4) Select contrast function on main menu by pressing. Adjust the cursor of CONTRAST by using the +right
and -left buttons

5) Confirm that the white bar makes changes and the screen contrast is also changed when the +right and

-left buttons are operated.

6) Select MISC by pressing –down or +up buttons and enter MISC menu from main menu by pressing
MENU button, then select RECALL by pressing –down or +up buttons and execute RECALL to reset
the contrast and brightness conditions. Make sure the contrast and brightness values are reset and the
screen is returned to its original state.

5-14

1.5.2 Inspection of automatic adjustment function

1) Enter Signal 26 through D-SUB port. (A screen of one-dot missing plus external frame)

2) Display an OSD menu. Using the +up and -down buttons to select LCD ADJUST and enter the LCD
ADJUST menu by press MENU button. Using the +up and -down buttons to select H-POSITION and
display H-POSITION adjusting OSD by press MENU button.

3) Adjust the cursor to RIGHT/LEFT by using the +right and -left buttons to shift the horizontal position
until the difference can be perceived visually.

4) Similarly as for UP/DOWN, make a shift from the initial value in operating on V-POSITION adjusting
OSD.

5) Return to the tab by using the MENU button. Using the +up and -down buttons to select H-SIZE and
display the H-SIZE adjusting OSD by press MENU button.

6) In the same manner as described above, shift H-SIZE from the initial values.

7) Return to the tab by using the MENU button. Using the +up and -down buttons to select FINE TUNE
and display the FINE TUNE adjusting OSD by press MENU button.

8) In the same manner as described above, shift FINE TUNE from the initial values.

9) Return to the tab by using the MENU button. Using the +up and -down buttons to select AUTO-SYNC
and press MENU button to do AUTO-SYNC adjustment.

10) Execute inspection with confirming that the screen (for position, size, and phase) has been normally
adjusted.

5-15

1.5.3 Inspection of input signal discrimination

Purpose of this inspection: Intended to confirm that a normal display is presented for any signal input.

Unless otherwise specified, the display pattern shall conform to the initial screen
as defined in 1.2.7, “Inspection mode setting.”

--- Inspection of signal inputs ---

1) According to the table specified below, setting of input port/signal is performed and a signal input is

entered.

Mode No. Inspection signal No.

0 1
2 4
3 6
4 8
5 9
6 7
7 11
8 12

9 14
10 13
11 16
12 17
13 19
16 20
17 23
18 28

2) When a screen display is presented, visually confirm that there is no abnormality in the display.

(There shall be no extreme displacement in position, size, and phase. The screen shall be free from
flickering. / There shall be no extreme error in the chromaticity.)

3) Check the OSD for the signals. Secure an OSD display and indicate the information screen by pressing
MENU, +up and –down buttons. Adjust the cursor to MISC with the +up and –down buttons, the
pressing MENU button to enter sub-menu of MISC. Adjust the cursor again to INFORMATION with the
+up and –down buttons, display the [INFORMATION] screen by pressing the MENU key. Confirm that
the displayed definition matches with the input signal.

--- Inspection of SYNC on GREEN inputs ---

4) According to the table below, enter a signal input of SYNC on GREEN and confirm that a normal
screen is displayed.

Mode No. Ins

p

ection signal No. SYNC

6 7 SYNC on GREEN
11 16 SYNC on GREEN
16 20 SYNC on GREEN

At this stage, inspection of input signal discrimination has been finished.

5-16

1.5.4 Inspection of VIDEO DETECT function

This inspection shall be carried out to confirm that the [VIDEO] function of the OSD menu is normally
available and that the video input port is automatically changed according to the combination of video
inputs.

Signal : Digital signal (1280*1024@60Hz)

Signal : 26 (SXGA, separate) : All black

Equipment to be used for inspection:

Signal Source 1 : Graphic Board, Model : Matrox Millennium G550 (Manufactured Matrox Electronic

Systems Ltd.) or equivalent.

Signal Source 2 : Analog output

Initial conditions:

Signal Source 1: Digital signal (1280*1024@60Hz)

Signal Source 2: Set at Signal 26

The video input shall be available at D-SUB input.

[Method of inspection]

1) In the initial state, enter OSD main menu. The current video input type is shown VIDEO ANALOG or
VIDEO DIGITAL. Press MENU button to select the video input port.

2) In the procedures specified in the table below, try to connect and disconnect the cables for signal
exchange in order to confirm whether the resultant operation is the same as described in the “result”
shown in the table below. In the column on the right side of the table below, the conditions of
connections at that time are described for the respective ports.

Operation Result Signal Source 1

Signal Source 2

Selected

p

ort DVI D-SUB
INITIAL STATE ANALOG Digital signal (1280*1024@60Hz) Signal 26
Pull out the D-SUB connector. DIGITAL Digital signal (1280*1024@60Hz) ×
Connect the D-SUB connector. DIGITAL Digital signal (1280*1024@60Hz) Signal 26

Pull out the DVI connector.

ANALOG × Signal 26

Connect the DVI connector.

ANALOG Digital signal (1280*1024@60Hz) Signal 26

“×” indicates that no connector is connected.

The selected port can be examined according to the [VIDEO INPUT] OSD that is displayed at the time of
signal changeover. (Displays of [NO SIGNAL], [OUT OF RANGE], etc. are regarded as rejection.)

1.6 Setting before shipment

In order to recover the initial conditions of all settings, the contents of the memory are reset before shipment.
This reset process involves actions in regard to the memory of signal modes. Therefore, these actions
should be taken after the completion of all electrical inspection and display inspection.

1) Enter an input of Signal 26 through D-SUB input port. Operate the OSD to enter the sub-OSD of
MISC.

2) Adjust the cursor to RECALL by using the +up and -down buttons, then press the MENU button.

3) When the OSD is displaying DONE following the word of RECALL, the resetting process has been
finished. Keep pressing the MENU button for a while to exit and disappear the OSD.

5-17

2. External inspection on the LCD module

2.1 External inspection of the display surface

The display surface shall be visually inspected according to the inspection items specified below. In cases
of the discovery of extreme defects or doubtful judgment, final judgment should be made on the basis of
relevant detailed standards for inspection.

Unless otherwise specified, the inspection signals shall be used at the timing of Signal 25 specified in
Paragraph 1.2.8 herein. However, the inspection screen shall be arranged according to the “Instructions 1)
to 5) of the Inspection Standard” set forth in Paragraph 2.1.2 (1).

2.1.1 Inspection items

1) Examination of the missing of lines (horizontal or vertical lines failing to be displayed).

2) Presence of extreme missing of dots (bright dots and black dots), or conspicuous ones.

3) Presence of extreme flaws, wrinkles, air bubble, dents, lint, foreign matter, and conspicuous
abnormality on the display surface.

2.1.2 Inspection standards

Inspection standards for external appearance and display conditions

(1) Inspection standards

Use a fluorescent lamp of 20w1 (for the inspection of external appearance) or the display plane
illuminance of 40 to 200lx (for the inspection of display conditions). Secure a distance of 35cm between
the eyes and the sample, and that of 20 to 30cm between the fluorescent lamp and the sample. Under
the above-mentioned conditions or better, inspections shall be carried out in the direction specified
below.

A: Angle of visibility for inspection (Right and left: 30

°

/Up and down: 20° to 0°)

The direction of application shall be recorded in the column of direction. Inspection shall be carried out at
a room temperature of 25 ± 5

°

C.

The following screen shall be used for the inspection.

1) All black or gray in 3 gradations

2) 15-gradation dot checkers (R,G,B in single color each)

3) 15-gradation dot checkers reversal screen

4) All red, all green, or all blue screen in solid color each

5) All white solid screen

(2) Standards for display conditions and external appearance inspection

Standard for errors (defects)

5-18

No Item description Standard Remark

1 dot (R/G/B) N≤4

2 dots adjacent ≤1

≥3 dots N=0

Bright

Tot a l N≤4

1 dot N≤5

2 dots Adjacent N≤2

≥3 dots N=0

Black

Tot a l N≤5

Distance (mm) ≥15

Sub-pixel N≤6

1 Dot defect

Total (Bright
and/ or black)

Pairs N≤2

1. Test pattern : Full white or Full
black.

2. Slight bright & dark dot do not

seen in 50% gray pattern is
ignored.

3. “2 dots adjacent” means the 2

sub-pixels in 2 adjacent pixels
or single pixel

4. See (Note 1) for detailed

definition of 2 dots adjacent.

5. 2 dots adjacent defect is

accounted as 1 defect.

6. Distance : (Note 2)

D≤0.15 Ignore

0.15<D≤0.5 N≤2

2

Black/white spot, (Foreign
circular matter) (mm)

D>0.5 N=0

W≤0.01 L: ignore Ignore

0.01<W≤0.05 L≤10 N≤ 4

3

Scratch on
polarizer, line
shape (mm)

W＞0.05

N=0

W≤0.01 Ignore

0.01<W≤0.05 L≤2 N≤3

4

Lints, black/white
line by foreign
particles (mm)

W>0.05 L>2 N=0

D≤0.2 Ignore

0.2<D≤0.4 N≤4

5

Dent on polarizer,
dot shape (mm)

D>0.4 N=0

D≤0.2 Ignore

0.2<D≤0.5 N≤4

6

Bubbles, peeling in
polarizer (mm)

D>0.5 N=0

D≤0.2 Ignore

0.2<D≤0.5 N≤4

7

Light leakage by
foreign articles
(mm)

D>0.5 N=0

Lamp defect It’s not allowed

Pollution It’s not allowed

8 Back Light

Leakage By 8% ND filter Invisible; (Note 3, 4)

5-19

No Content

FLC48SXC8V

Specification (FJ)

Remarks

Clear mura (with clear border) By 8% ND filter

Unclear mura (with unclear
border)

By 8% ND filter

9 Mura (mm)

Light or dark hor. & Vertical
bands

By 8% ND filter

(1)Test pattern : Full black/full

white/50% gray

(2)Invisible, (Note 3, 4)

10 White dot spots

By 8% ND filter

Invisible

11 RGB segment defect It is not allowed

12 Vertical or horizontal line(s) defect It is not allowed

13 Light bands defect It is not allowed

14 Over shoot (RGB) It is not allowed

15 Tab defect (Black strip with no image) It is not allowed

16 Block noise It is not allowed

17 White or black screen (no video) It is not allowed

18 Screen break It is not allowed

19 Panel noise (Twinkling) It is not allowed

20 Newton ring number N= 0

21 Rubbing mark Rubbingless

22 Mottling (Non-uniformity or mura) By 8% ND filter Invisible; (Note 3, 4)

23 Dim line (Vth shift line) By 8% ND filter Invisible; (Note 3, 4)

24 Line defective N=0 Pattern: Black, white

25 Fungus (mm) By 8% ND filter Invisible; Pattern: 50% gray

Note 1 : Detailed definition of 2 dots adjacent is as follows.

Dot defect distance category is not applied to the dot defects categorized in 2 dots adjacent.




RGBRGB
RGBRGB
RGBRGB
RGBRGB

RGBRGB
RGBRGB
RGBRGB
RGBRGB





RGBRGB
RGBRGB
RGBRGB
RGBRGB

RGBRGB
RGBRGB
RGBRGB
RGBRGB

Note 2 : Definition of Defective distance is as follows. Defective distance is specified among bright dots and

among dark dots each, as bright dot and dark dot are not seen at the same screen.

Note 3 : How to use 8% ND filter.

A: Measurement

(1) The distance between LCD with ND filter : 3 cm

(2) The viewing distance between LCD with inspector : 35 cm

B: Criteria : Invisible

Note 4 : Note 5 also use for ViewSonic 8%ND filter Mura judgement.

Both Horizontal and Vertical are allowed

5-20

3. Inspection of PLUG & PLAY communication and OSD for model name/ serial number

3.1 System Connection

This system should be connected as shown below.

PC

Printer Cable

D-SUB Signal Cable

PROGRAM
Part No. 599910552

MONITOR

PC In

Signal In

Signal Out
A Type

Signal Out
B Type

DC +5V

CONNE CTOR (Power Supply)
Part No. 599910594

AUTO ADJ I/F BO X

DVI to D-SUB Signal Cable (Special)
Part No. 599910604

DVI to D-SUB Signal Cable (Special)

(Part No. : 599910604)

3.2 Input Signal

Horizontal sync frequency: Not specified.

Vertical sync frequency: Not specified.

Because a writing equipment is in the signal-less condition at the time of EDID data writing, OSD of "NO Signal"
is indicated on the screen.

The pins
of there
points cuts
it.

5-21

3.3 Operational procedures

1. Start PNP.EXE from DOS mode or the Windows DOS prompt.

2. Operation key assignment

• Determine the operation mode with the F1 ~ F9 and ESC keys.

F1: Setting file changeover for respective models

F4: EDID data for reading

F5: D-SUB connector (Analog) for writing (EDID data)

F8: DVI-D connector (Digital) for writing (EDID data)

F9: D-SUB (Analog) and D-VI-D (Digital) for writing (Write ALL)

ESC: End of program

3. Press the F1 key and enter an input of setting file for the related model. Press the Enter key.

File name Model

08EA1AAF LCD1920NX

4. Writing and inspection procedures

In this section, explanations are given in regard to an example of procedures used for the writing and
inspection of all items.

a. The D-SUB connector terminal of the writing equipment and AUTO ADJ I/F BOX are connected with

the D-SUB signal cable.

b. Press the F9 key (write ALL).

c. Since the screen is changed over to the one that waits for an input of serial number, examine the serial

number of the set, enter it from the keyboard, and press the Enter key.

The message of the screen:

Model Name "LCD1920NX"
Input serial number (Enter only: Use previous number)

d. EDID data writing for the D-SUB (ANALOG)

When the Enter key is pressed, the EDID data of the D-SUB (ANALOG) are written.

The message of the screen:

Input 1 File 1 set N/A (Hit any key)

e. EDID data writing for the DVI-D (DIGITAL)

The DVI-D connector terminal of the writing device and AUTO ADJ I/F BOX are connected with the DVI
to D-SUB Signal Cable (Special).

When the Enter key is pressed, the EDID data of the DVI-D (DIGITAL) are written.

The message of the screen:

Input 2 File 2 set N/A (Hit any key)

5-22

f. Upon normal completion, a screen display is presented "OK".

g. A power-supply switch is switched off -> turned on, A signal generator (There is no designation in the

input signal.) and a writing equipment are connected with the D-SUB signal cable directly.

h. Display “INFORMATION” of the OSD, and confirm that the model name (LCD1920NX) and serial

number have been correctly written.

3.4 EDID data file

The EDID data file text is shown below. When you write or inspect EDID for this monitor, the following table can
be used.

file name : EDID-208.TXT

EDID-208 (Analog)

0 1 2 3 4 5 6 7 8 9 A B C D E F

00

00 FF FF FF FF FF FF 00 38 A3 DE 65 01 01 01 01

10

10

*1)

0C
*2)

01 03 0E 26 1E 8C EA 2C 95 A6 58 4A 9A 26

20

21 50 54 BF EF 80 71 4F 81 80 01 01 01 01 01 01

30

01 01 01 01 01 01 30 2A 00 98 51 00 2A 40 30 70

40

13 00 78 2D 11 00 00 1E 00 00 00 FD 00 32 4B 1E

50

52 0E 00 0A 20 20 20 20 20 20 00 00 00 FC 00 4E

60

45 43 20 4C 43 44 31 39 32 30 4E 58 00 00 00 FF

70

00 32

*3)

34 30 30 30 30 31 51 41 0A 20 20 20 00 F4

*4)

Table 1 Data list (Management number : EDID-208)

file name : EDID-209.TXT

EDID-209 (Digital)

0 1 2 3 4 5 6 7 8 9 A B C D E F

00

00 FF FF FF FF FF FF 00 38 A3 DE 65 01 01 01 01

10

10

*1)

0C
*2)

01 03 80 26 1E 8C EA 2C 95 A6 58 4A 9A 26

20

21 50 54 BF EF 80 71 4F 81 80 01 01 01 01 01 01

30

01 01 01 01 01 01 30 2A 00 98 51 00 2A 40 30 70

40

13 00 78 2D 11 00 00 1E 00 00 00 FD 00 32 4B 1E

50

52 0E 00 0A 20 20 20 20 20 20 00 00 00 FC 00 4E

60

45 43 20 4C 43 44 31 39 32 30 4E 58 00 00 00 FF

70

00 32

*3)

34 30 30 30 30 31 51 41 0A 20 20 20 00 82

*4)

Table 2 Data list (Management number : EDID-209)

Note 1: address 10h Week of manufacture = Month of manufacture × 4

Note 2: address 11h Year of manufacture - 1990

Note 3: address 71h ~ 7Dh Serial Number (ASCII coded)
If less than 13 char, terminate with 0Ah and fill the rests with 20h.

Note 4: address 7Fh Checksum
The sum of entire 128 byte shall be equal to 00h.

6-1

TROUBLE SHOOTING

TABLE OF CONTENTS

Page

1. Power is not available .......................................................................................................... 6-2

2. No image display ................................................................................................................. 6-3

2.1 LED light, but no OSD, no back light and no image .......................................................... 6-3

2.2 LED green, and no OSD and no back light ........................................................................ 6-4

2.3 LED green, and OSD present, but no image ..................................................................... 6-5

3. Picture errors ....................................................................................................................... 6-6

3.1 High-light in white or black ............................................................................................... 6-6

3.2 Image is unclear ................................................................................................................. 6-7

3.3 Image noise ....................................................................................................................... 6-8

4. Others operational error ....................................................................................................... 6-9

4.1 DDC read error .................................................................................................................. 6-9

4.2 Back light malfunction ........................................................................................................ 6-9

5. Switching power circuit failure ........................................................................................... 6-10

Prior to the diagnostic servicing for troubleshooting, the following items should be examined to
confirm the freedom from abnormality:

(1) Power supply voltage: 100 to 240VAC
(2) Input signal: 1280 x 1024 (60Hz), recommended (Separate)

A: Analog D-SUB input RGB 0.7Vp-p (when terminated with 75Ω)
Display pattern Display not in black

(3) All connectors shall be correctly connected in the unit.

< Explanations below are based on the analog D-SUB input.>

Note

6-2

1. POWER is not available

Confirm if there is any withdrawal of internal cables, disconnection, etc.

NO

YES

Is +12V available at W09 on MB.?

Failure point

Check the power adapter.

Failure point

1) Check fuse (F1) ok?

2) Check ZD04; Z03 ok?

3) Check switching power IC (include L33, D19, IC20,
IC12…) ok?

Failure point

1) Check IC08 (1117-adj) ok.

2) Value of R198, R199 is correct?

Is +5Vx system ok?
+5Vx for system. (Pin7 for IC22)

NO

YES

Failure point

1) Check fuse (F1) ok?

2) Check ZD04; Z03 ok?

3) Check switching power IC (include L34, D20, IC20,
IC12…) is ok?

Is panel power ok?
VLCD for panel power. (Pin5 for IC22)

NO

YES

NO

YES

Is +5V system ok? (Pin5 for IC18)

Failure point

Check MOSFET. (IC18)

NO

YES

Power of ADC is available? (C79)

Failure point

1) Check IC31 (7588-adj) ok?

2) value of R80,R128 is correct?

NO

YES

The power of scalar IC, LVDS is available? (IC02;IC36;IC37)

Failure point

1) Check Q10 (A673); D115(1N4004); D116(11DQ06).

2) Check IC11 (SiI153B or SiI161) ok?

NO

The power of TMDS is available? (C171)

END

YES

6-3

2. No image display

2.1 LED green, but no OSD, no back light and no image

NO

YES

Is the LED turned green when
a power switch is pressed?

Failure point

Check power adapter .

Is +12V power source ok ? (It means +12

V

power is connect to W09 and ok?)

NO

Check W04 to display BD.
Control wire is ok?

Is the OSD displayed?

NO

YES

Failure point

Go to “no OSD and no back light”.

Is an image displayed?

NO

YES

Failure point

Go to “OSD presented but no image”.

Normal

6-4

2.2 LED green, and no OSD and no back light

Is +12V available at L01and L02?

NO

YES

Failure point

Check the power supply (Adapter).

END

Is +12V is available at W05 Pin1, 2, 3: +12V for Inverter, and Pin8: +5V ok?

YES

Failure point

Check JP01 and IC18, and inverter control circuit.

Is 5V available at IC22 Pins 5, 6, 7, 8? (Pin5, 6 are system power; Pins7,8 are panel power)

NO

YES

Failure point

Check power system circuit of +5Vx and VLCD.

Is there a clock signal at IC25 Pins 18,19? (Is CPU working?)

NO

YES

Failure point

Check XR02 (Crystal) ok?

Is +5V is available at W07 Pin1, 2, 3.

NO

YES

Failure point
Check IC22.

Is LVDS signal input to panel? (Is W07 connected to panel correctly?)

NO

YES

Failure point

Check LVDS signal cable and W07.

OK

Failure point

Check panel is ok.

NO

6-5

2.3 LED green, and OSD present, but no image

Is there a VIDEO signal at W01,and H-sync V-sync ok?

NO

Failure point

1) Check power of IC11.

2) Check IC11 if ok.

END

Failure point

1) Check the power of IC08

2) Check H-sync circuit

3) Check IC01 if ok

Is there Digital (DVI) signal input on W06?

YES

Is there a digital signal output available o

f

IC11 (H, V, CLK, DE, data)?

YES

NO

YES

Is there a H-sync, clock, data output
available of IC01?

Failure point

1) Check power of IC02 (IC31, R128, R80)

2) Check IC02 if ok.

NO

YES

Is there a available signal output IC02?

NO

Failure point

1) Check W07 on PCB BD.

2) Check LVDS signal cable ok?

Is there a available signal at IC36, IC37?

YES

Is signal output to panel ok? (Is W07
signal transfer to W07 to panel CN1 ok?)

6-6

3. Picture errors

3.1 High-light in white or black

OK

NG

Is High-light in white or black?

NG

OK

Failure point

Adjust the input on the signal side to 0.7Vp-p again.
Then, use [AUTO CONTRAST] in this mode again.

Normal

Use [AUTO CONTRAST] to adjust video
gain and black-level offset value.

OK

NG

Normal

Is the RGB input maintained at 0.7Vp-p
in L20, L21, and L22?

OK

NG

Normal

Is the RGB input maintained at 0.7Vp-p
at IC01 Pins 7, 15, and 22?

NG

Failure point

Check L23, L25, and L26, and also the signal source.

OK

Failure point

Check the conditions at IC01Pins 29 and 30.

6-7

3.2 Image is unclear

Failure point

1) Change to resolution of 1280x1024.

2) Adjust [SMOOTHING] function.

Are image still unclear even though [H-SIZE]
and [FINE TUNE] are adjusted?

OK

NG

Normal

Is the display used in the ENLARGE mode?

YES

Replace the connection cable that is extended
toward the PC.

OK

NG

Normal

OK

END

* For the auto-sync processing of H/V-POSITION, H-SIZE, and FINE TUNE, it is

necessary to use images in the outermost periphery of the video activity area.
During adjustments, use images of full-screen display by WINDOWS.

NG

Failure point

Check waveforms on L20, L21, L22 (Is the R,
G, B signal sourceclear?).

6-8

3.3 Image noise

Failure point

Analog : Confirm the input signal level of D-SUB (Pin10, Pin6 of IC06)
Digital : 1) Confirm the Video card Driver IC frequency if over specification.

2) Check DVI signal cable.

Is the image still unclear even though
H-SIZE and FINE TUNE are adjusted?

OK

NG

Normal

Replace the video cable that is connected
to the PC.

OK

NG

Is there any change in the noise when the
contrast is adjusted?

YES

NO

Normal

Failure point

Analog : Check power, output signal and

peripheral circuit of IC01.

Digital : Check power, output signal and

peripheral circuit of IC11.

6-9

4. Others operational error

4.1 DDC read error

1) D-SUB

• Check the power supply for IC26.

• Check the clock signal waveform at Pin 6 of IC26 and the data waveform at Pin 5.

2) DVI

• Check the power supply for IC14(24C02).

• Check the clock signal waveform at IC14 Pin 6 and the data waveform at Pin 5.

4.2 Back light malfunction

• Check for loose cabbles, if any.

• Is 12V available at W05 Pins1, 2, 3?

• Is W05 Pin 8 maintained at 4.5V or above, and Pin7 at 0~5V ? If there is still no lighting even though the

above-mentioned voltages are maintained, then the inverter PCB is considered to be out of order.

6-10

5. Switching power circuit failure

NO

YES

Is +12V power source available?
(IC18 pin7, 8)

Failure point

1) Check IC20 Pi 7 approximately +5.1V. (ZD04)

2) Check IC21 and IC22 if broken.

3) Check D19, L33, IC12, IC20 if any one break.

Is +5Vx ok? (This is all TTL IC
power source)
Make sure that the voltage o

f

between IC22 pins 7, 8 and GND
a

pp

roximately 5V.

NO

YES

Failure point

1) Check Adapter.

2) Check F1 (fuse).

3) Check JP01.

NO

Is IC22 Pin 1 +5V?

1) Make sure that the voltage of between IC18 pin1
and GND approximate +5V.

2) Make sure that the voltage of between IC22 pin5
and GND approximate +5V

3) Make sure that the voltage of between IC22 pin7
and GND approximate +5V.

4) Make sure that the voltage of between IC18 pin5
and GND approximate +5V.

Failure point

1) Check IC25 Pin 3 (CPU) if Low-level.

2) Check IC18 ok?

NO

YES

Check power of IC18 Pin 5 and
Pin 6 is 5V. (This is ADC, Scalar,
LVDS power source)

YES

Is VLCD approximately 5V?(This
is panel power source)
1Make sure that the voltage o

f

between IC22 pin 5 and pin6 to
GND a

pp

roximate 5V.

Failure point

1) Check IC20 Pin 5 approximate +5V.

2) Check IC19 and IC22 if broken.

3) Check D20, L34, IC12, IC20 if any one is broken?

NO

Is IC22 Pin 3 about +5V?

YES

Failed

Next page

Failure point

Check over voltage protection circui

t

work? (IC20 pin14 High level)

Failure point

Check over voltage protection circui

t

work? (IC20 Pin13 High level)

6-11

END

Failure point

1) Check +5V ok?

2) Check IC08 ok?

3) Check the value of R198, R199.

NO

YES

Is C79 “+” approximately 3.5V?

CONTNUE

Failure point

1) Check +5V ok?

2) Check IC31 ok?

3) Check the value of R80, R218.

NO

YES

Is C65 “+” approximately 3.5V?

Is C172 “+” approximately 3.5V?
(Digital signal input and change to digital
source when input analog at the same time)

Failure point

Check the following parts:
D115 (1N4004),D116(11DQ06),Q10,R145,R146

NO

YES

Check the power of IC18 pin5 and pin6 is
under 1V. (When system is into powe

r

saving mode)

Failure point

Check the following parts:
Q03, R87, IC23, IC25

YES

NO

7-1

CIRCUIT DESCRIPTION

TABLE OF CONTENTS

Page

1. Summary .............................................................................................................................. 7-2

2. Circuit description ................................................................................................................ 7-3

2.1 System block diagram ........................................................................................................ 7-3

2.2 Analog signal input circuit .................................................................................................. 7-4

2.3 A/D converter ..................................................................................................................... 7-5

2.4 AM121-2 and peripheral circuits ........................................................................................ 7-7

2.4.1 General description ......................................................................................................... 7-7

2.4.2 AM121-2 internal block diagram ..................................................................................... 7-8

2.4.3 Circuit diagram ................................................................................................................ 7-9

2.4.4 Pin description .............................................................................................................. 7-10

2.4.5 Function description ...................................................................................................... 7-13

2.5 Reset signal generator circuit .......................................................................................... 7-13

2.6 CPU (MTV112MN32) description ..................................................................................... 7-14

2.6.1 CPU internal block ........................................................................................................ 7-14

2.6.2 Features ........................................................................................................................ 7-14

2.6.3 Pin description .............................................................................................................. 7-15

2.6.4 H/V-sync processing ..................................................................................................... 7-16

2.6.5 DDC & IIC interface ...................................................................................................... 7-17

2.7 LVDS description ............................................................................................................. 7-18

2.7.1 Circuit ............................................................................................................................ 7-18

2.7.2 General description ....................................................................................................... 7-19

2.7.3 Function block diagram ................................................................................................. 7-19

2.8 DDC circuit description .................................................................................................... 7-20

2.8.1 Analog circuit ................................................................................................................ 7-20

2.8.2 Digital circuit .................................................................................................................. 7-20

2.8.3 General description ....................................................................................................... 7-20

2.9 Power system circuit and description .............................................................................. 7-21

2.10 Over voltage protection .................................................................................................. 7-22

2.11 TMDS signal process ..................................................................................................... 7-23

2.11.1 Circuit and description ................................................................................................. 7-23

2.11.2 Chip general description ............................................................................................. 7-24

2.11.3 Features ...................................................................................................................... 7-24

2.11.4 Pin description ............................................................................................................. 7-25

2.12 Waveforms ..................................................................................................................... 7-28

7-2

1.Summary

LCD1920NX is a dual input, multi-frequency and multi mode color TFT LCD monitor. It supports different
resolutions including SXGA, XGA, SVGA, VGA and other various high-resolution modes up to 1280x1024 for
IBM, PC compatibles, Power PC and Macintosh. LCD1920NX uses a TFT LCD panel with a 0.294mm pixel
pitch, providing 16.7 million color image.

As the previous block diagram illustrates, LCD1920NX uses the Analog/Digital Interface Controller (IC02)
ASIC for mode detection and resolution scaling from its preset values. Digital input we use SiL 153B (IC11).
To extract TMDS link. The purpose of the two set of PLL is to provide the clock from multiple horizontal
synchronous frequencies. The AD9884 (IC01), include PLL1 and A/D converters sample clock. PLL2
produces the LCD panel’s pixel clock with the TLC2933 (IC03).

Furthermore, each TFT LCD monitor uses the 24LC21 (IC26) chip to provide DDC2B with Analog Plug &
Play, 24C02 (IC14) for digital interface Plug & Play. The DDC data format is EDID v1.3.

Upon receiving video signal input, the Analog Interface Controller (Digital Process and Control System) will
trigger the mode detection function such that the internal controls can use the ROM preset information to
drive the Analog Interface Controller. In addition, the preset values can determine A/D converter clock; LCD
pixel clock; line buffer input/output rate; V-Sync and H-Sync pulse width; back porch and front porch to
provide optimal performance for the TFT LCD monitors.

Digital process and control system allows uses to control OSM menu values to change monitor setting that
includes Auto-SYNC , AUTO-CONTRAST, brightness, contrast, color adjust, H/V position and H size. The
following sections are a breakdown of the TFT LCD display control boards major section.

7-3

2. Circuit description

2.1 System block diagram

Power

sequency

control

circuit

VLCD

PD

LVDS

64LC83

PWR_DN

TFT

panel

H, V, DE, CLK, data

AD9884

ADC

SOG

clock

generator

control

center

24 bit

RGB

control

register

Divider

Digital Data

input mode

Detection

AM121-2

SCALER

Scaling &

Dithering

interface OSD mix

OSD

generator

MTV118

24LC08

EEPROM

D-SUB

Rin

Gin

Bin

H-sync

Href

TLC2933

PLL IC

74F153

24LC21

for

analog

DDC

Power

system

clock

H-sync

V-sync

Digital

DDC

SCL SDA +5V for ddc

Digital input

W06

DVI

24 bit

RGB

H and V

phase

detect

circuit

V-sync

H-sync

V-sync

SiI153B

Speaker

Audio AMP.

Audio input

W10

Volume control

24LC08

MTV112

CPU

Vbk

SCL&SDA

SCL&SDA

control

5Vx

5V

12V in

SCL

SDA

-5V for DDC

H-sync

V-sync

SOG

sepreater

Digital

comp.

Digital

Vbk

H

V

7-4

2.2 Analog signal input circuit

This product uses 74F153 as a signal switch in order to support composite SYNC and SYNC on Green
timings. The MPU (IC25) in this product provides the differential function to the Composite SYNC, so the
SYNC processor circuit is simplified. The free run function in this product also make user to easily know the
input signal is out of product specification or interrupted. When separat SYNC is detected through the V-in
and H-in, MPU will set both the H-select and V-select will be X0, Y0 and MPU select digital interface will set
IC06 X1, Y1 and MPU select SYNC on Green H-Sync set to X2, V-Sync set to Y2, when composite is select
X3, Y3.

V-composite is the vertical sync separated from the composite sync through MPU. And IC01 (AD9884)
extracts H-Sync from Green. On the other hand, external system read IC26 EDID data by SDA and SCL
buses.

Signal switch of IC06(74F153)

A B

MPU detect mode

L L Separator

L H Digital

H L Sync on green

H H Composite

7-5

2.3 A/D converter

The A/D converter (IC01) is used to convert the RGB video signals of about 0.7Vp-p into the digital signals of
odd-numbered and even-numbered pixels of 8 bits each, 48 bits in total. In regard to the clocks for
conversion into digital signals, the built-in PLL is used to generate the clock signals inside the IC01, based on
the horizontal sync signal.

The video signal passes through the built-in pre-amplifier, and is then A/D-converted by the sampling clock
signal generated from the above-mentioned PLL circuit.

The registers intended for the setting of the clamp level and the pre-amplifier gain are controlled through the
IIC bus of Pins 29 to 30. C81, C82, and R50 connected to Pin 45 are used to compose a loop filter intended
to generate the PLL clock signals. If this section becomes out of order, it is impossible to accomplish normal
reproduction of images.

During the entry of the SOG input and the composite sync input, the vertical blanking period and the PLL
circuit are held by the coast signal input fed from Pin 41. If this signal is not available, the clock frequency is
changed during the vertical period and a curve may be produced at the upper part of the screen.

7-6

The AD9884 is a complete 8-bit 140MSPS, monolithic graphics digitizer optimized for digitizing RGB
graphics signals from personal computers and workstations. Its 140MSPS encode rate capability and
full-power analog bandwidth of 500MHz supports display resolutions of up to 1280x1024 at 75Hz with
sufficient input bandwidth to accurately acquire and digitize each pixel. To minimize system cost and power
dissipation, the AD9884 includes +1.25V reference, PLL to generate a pixel clock from HSYNC and COAST,
and programmable gains, offset, and clamp control. The user provides only a +3.3V power supply, analog
input, and HSYNC and COAST signals. Three-state CMOS outputs may be powered from 2.5V to 3.3V.

The AD9884’s on-chip PLL generates a pixel clock from HSYNC and COAST inputs. Pixel clock output
frequencies range from 20 to 140MHz. PLL clock jitters is 500ps p-p typical relative to the input reference.
When the COAST signal is presented, the PLL maintain its output frequency in the absence of HSYNC. A
sampling phase adjustment is provided. Data, HSYNC and Clock output phase relationships are maintained.
The PLL can be disabled and external clock input provided as the pixel clock.

A clamp signal is generated internally or may be provided by the user through the CLAMP input pin. This
device is fully programmable via a two wire serial port. Fabricated in an advanced CMOS process, the
AD9884 is provided in a space-saving 128-lead MQFP surface mount plastic package and is specified over
the 0°C to +85°C temperature range.

7-7

2.4 AM121-2and peripheral circuits

The AM121-2 is enhanced version of the AM100 chip. It is an IC designed for dual-interface SXGA TFT LCD
monitors. A dual-interface LCD monitor takes analog or digital RGB signals from a personal computer
graphics card. This feature makes a dual-interface LCD monitor.

2.4.1 General description

The analog input RGB signals are first sampled by six channels of the 8-bit A/D converter, and the 48-bit
RGB data is then fed into AM121-2. For digital interface, the input data is first received by a TMDS receiver,
and the 24/48 bit RGB output data of TMDS receiver is then fed into AM121-2. Without any manual
adjustment, AM101 is capable of performing automatic detection of the display resolution and timing of input
signals generated from various PC graphic cards. AM121-2 then automatically scales the input image to fill
the full screen of the LCD monitor. AM121-2 can interface with TFT LCD panels from various manufacturers
by generating either 24-bit or 48-bit RGB signal to the LCD panel based upon the timing parameters saved in
the EEPROM.

The AM121-2 implements four advanced display technologies:

Advanced mode detection and auto-calibration without any external CPU assist

Advanced programmable interpolation algorithm

Stand-alone mode support, and

Advanced true color support with both dithering and frame modulation

The AM121-2 also provides distinguished system features to the TFT LCD monitor solution. The first one is
“plug-and-play”, and the second one is “cost-effective system solution”. To be truly plug-and-display, the
AM121-2 performs automatic input mode detection and auto phase calibration, so the LCD monitor can
ensure that the A/D converters’ sample clock is precisely synchronized with the input video data, and to
preserve the highest image bandwidth for the highest image quality. Furthermore, the AM121-2 can generate
output video even when the input signal is beyond the specifications or no input signal is fed.

For “cost-effective system solution”, the AM121-2 implements many system support features such as OSM
mixer, error status indicators, 2-wire serial interface for both EEPROM and host CPU interface. Another
important contributing factor is that the AM121-2 does not require external frame buffer memory for the
automatic image

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2.4.2 AM121-2 internal block diagram

Input mode detection and auto calibration

AM121-2 can handle up to 14 different modes, it can automatically detect the mode and scaling.

Buffer memory and read/write control

The AM121-2 uses internal buffer memory to store a portion of the input image for image scaling and
output synchronization.

Image scaling, interpolation and dithering

The AM121-2 supports both automatic image scaling and interpolation. It supports 16.7million true color
for a 6-bit panel. Two dithering algorithms are implemented and users can chose between them through
the external micro-controller.

OSM mixer and LCD interface

At the output stage, the AM121-2 performs the OSM mixer function, and then generates the 24-bit/48-bit
RGB signal to the LCD panel with the correct timing.

EEPROM interface

As mentioned in previous sections, the external EEPROM (IC07—24LC08) stores crucial information for
the AM121-2 internal operations. The AM121-2 interfaces with the EEPROM through a 2-wire serial
interface.

CPU interface

The Am121-2 supports a 2-wire serial interface to an external CPU. The interface allows the external CPU
to access and modify control register inside the AM121-2.

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2.4.3 Circuit diagram