NEC LCD1970NX Service manual

PART NO. 599910742

SERVICE MANUAL

COLOR MONITOR

MultiSync LCD1970NX

MODEL LCD1970NX (B) / (C)

LCD1970NX-BK (B) / (C)

1st Edition

NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION

NOVEMBER 2004

200412 08RJ1LBY 08RJ2LBY 08RJ1LCY 08RJ2LCY

The SERVICE PE RSONNEL sh ould ha ve the appr opriate technical training, k nowled ge and ex perience 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 ut ilized a micro-gap po wer switch. T urn off the set by first pushing power s witch. 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 personne l that un-insula ted volt age within the unit m ay have suff icient magnitude to cause electric shock.

This symbol alerts the personnel that important literature concerning the operation and maintenance of this unit has been included. Therefore, it should be read carefully in order to avoid any problems.

WARNING

PRODUCT SAFETY CAUTION

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

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

3. As for a connector, pick and extract housing with fingers properly since a disconnection and improper contacts may occur, when wires of the connector are led.

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

CONTENTS

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

SERIAL NUMBER INFORM ATION ----------------------------------------------- 2-1

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

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

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

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

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

Page No.

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

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

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

PACKING SPECIFICATION -------------------------------------------------------- 11-1

REVISION HISTORY ------------------------------------------------------------------ 12-1

User's Manual

MultiSync LCD1970V MultiSync LCD1970NX

User’s Manual

1-1

Index

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

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

Canadian Department of Communications Compliance Statement ............................................ English-2

Declaration of Conformity ............................................................................................................ English-2

Contents ....................................................................................................................................... English-3

Quick Start ...................................................................................................................................English-4

Controls........................................................................................................................................ English-8

Recommended use ....................................................................................................................English-10

Specifications for LCD1970V .....................................................................................................English-12

Specifications for LCD1970NX .................................................................................................. English-13

Features .....................................................................................................................................English-14

Troubleshooting .......................................................................................................................... English-15

TCO’03 ....................................................................................................................................... English-16

Manufacturer’s Recycling and Energy Information ..................................................................... English-17

1-2

WARNING

TO PREVENT FIRE OR SHOCK HAZARDS, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. ALSO, DO NOT USE THIS UNIT'S POLARIZED PLUG WITH AN EXTENSION CORD RECEPTACLE OR OTHER OUTLETS UNLESS THE PRONGS CAN BE FULLY INSERTED.

REFRAIN FROM OPENING THE CABINET AS THERE ARE HIGH VOLTAGE COMPONENTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

CAUTION

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.

Caution:

When operating the MultiSync LCD1970V/MultiSync LCD1970NX with a 220-240V AC power source in Europe, use the power cord provided with the monitor.

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

When operating the MultiSync LCD1970V/MultiSync LCD1970NX with a 220-240V AC power source in Australia, use the power cord provided with the monitor. If a power cord is not supplied with this equipment please contact your supplier.

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

English

Declaration

Declaration of the Manufacturer

We hereby certify that the colour monitor MultiSync LCD1970V (L194RK)/MultiSync LCD1970NX (L194RH) are in compliance with

Council Directive 73/23/EEC:

– EN 60950-1

Council Directive 89/336/EEC:

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

Windows is a registered trademark of Microsoft Corporation. NEC is a registered trademark of NEC Corporation. E U.S. registered trademark. OmniColor is a registered trademark of NEC-Mitsubishi Electronics Display Europe GmbH in the countries of EU and Switzerland. ErgoDesign is a registered trademark of NEC-Mitsubishi Electric Visual Systems Corporation in Austria, Benelux, Denmark, France, Germany, Italy, Norway, Spain, Sweden and U.K. NaViSet is a trademark of NEC-Mitsubishi Electronics Display Europe GmbH in the countries of EU and Switzerland. MultiSync is a registered trademark of NEC-Mitsubishi Electric Visual Systems Corporation in the countries of U.K., Italy, Austria, Netherlands, Switzerland, Sweden, Spain, Denmark, Germany, Norway and Finland. All other brands and product names are trademarks or registered trademarks of their respective owners. As an E

NERGY STAR

guidelines for energy efficiency. The E

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

NERGY STAR

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

and marked with

NEC-Mitsubishi Electric Visual

Systems Corporation

Tokyo 108-0023, Japan

4-13-23, Shibaura,

Minato-Ku

NERGY STAR

is a

English-1

1-3

Canadian Department of Communications Compliance Statement

DOC: This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

C-UL: Bears the C-UL Mark and is in compliance with Canadian Safety Regulations according to CAN/CSA C22.2 No. 60950-1.

FCC Information

1. Use the attached specified cables with the MultiSync LCD1970V (L194RK)/MultiSync LCD1970NX (L194RH) colour monitor so as not to interfere with radio and television reception.

(1) The power supply cord you use must have been approved by and comply with the safety standards of U.S.A.,

and meet the following condition.

Power supply cord Non shield type, 3-conductor Length 2.0 m Plug shape

U.S.A

(2) Please use the supplied shielded video signal cable. Use of other cables and adapters may cause interference

with radio and television reception.

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

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

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

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

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.

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: 500 Park Blvd, Suite 1100

Tel. No.: (630) 467-3000

Type of Product: Display Monitor

Equipment Classification: Class B Peripheral

Model: MultiSync LCD1970V (L194RK)/MultiSync LCD1970NX (L194RH)

Itasca, Illinois 60143

We hereby declare that the equipment specified above conforms

to the technical standards as specified in the FCC Rules.

English-2

1-4

Contents

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

• MultiSync LCD monitor with tilt/swivel/height adjust stand

• Power Cord

• Video Signal Cable (15-pin mini D-SUB male to 15-pin mini D-SUB male)

• User’s Manual

• CD ROM (includes complete User’s Manual in PDF format).

To see the User’s Manual, Acrobat Reader 4.0 or higher must be installed on your PC.

Power Cord

English

User’s Manual 15-pin mini D-SUB male to

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

15-pin mini D-SUB male

English-3

CD-ROM

1-5

Quick Start

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

1. Turn off the power to your computer.

2. For the PC or MAC with DVI digital output (NX only): Connect the DVI signal cable (not included) to the connector of

the display card in your system (Figure A.1). Tighten all screws.

For the PC with Analog output: Connect the 15-pin mini D-SUB signal cable to the connector of the display card in your system (Figure A.2). Tighten all screws.

For the MAC: Connect the Macintosh cable adapter to the computer, then attach the 15-pin mini D-SUB signal cable to the Macintosh cable adapter (Figure B.1). Tighten all screws.

DVI signal cable (not included)

NOTE: Some Macintosh systems do not require a Macintosh cable adapter.

3. Place hands on each side of the monitor to tilt the LCD panel 30-degree angle and lift up to the highest position (Figure C.1).

4. Connect all cables to the appropriate connectors (Figure C.1).

5. Place power cord into the specific hooks indicated in Figure C.2.

6. Place the D-Sub into the specific hooks indicated in Figure C.2.

Figure A.1 Figure B.1

30˚ Tilt

Highest Stand Position

DVI Cable (not included)

Figure A.2

Power Cord

Macintosh Cable Adapter (not included)

D-SUB Cable

Figure C.1 Figure C.2

English-4

1-6

7. Place the DVI cable into the specific hooks indicated in Figure C.3.

8. Make sure all cables are resting flat against the stand (Figure C.3).

9. Hold the all cables firmly and place the cable cover onto the stand

(Figure D.1). To remove the cable cover, lift the cover off as shown in Figure D.2.

Insert Top First

Then Bottom

DVI Cable (NX only)

English

Flat

Figure C.3

Figure D.1

10. Connect the power cord to the power outlet (Figure E.1).

NOTE: Please refer to Caution section of this manual for proper selection of AC power cord.

11. The vacation switch on the back side of the monitor must be turned on (Figure E.1). Turn on the monitor with the front

power button and the computer.

NOTE: The vacation switch is a true on/off switch. If this switch is on the OFF position, the monitor cannot be turned on

using the front button. DO NOT switch on/off repeatedly.

12. No-Touch Auto Adjust automatically adjusts the monitor to optimal settings upon initial setup for most timings.

For further adjustments, use the following OSM controls:

• Auto Adjust Contrast (Analog input only)

• Auto Adjust (Analog input only)

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

NOTE: If you have any problems, please refer to the Troubleshooting section of this User’s Manual.

Figure D.2

OFF Position

ON Position

Vacation Switch

Figure E.1

English-5

1-7

Power Button

Raise and Lower Monitor Screen

The monitor may be raised or lowered. To raise or lower screen, place hands on each side of the monitor and lift or lower to the desired height (Figure RL.1).

NOTE: Handle with care when raising or lowering the monitor screen.

Figure RL.1

Tilt and Swivel

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

NOTE: Handle with care when tilting and swivelling the monitor screen.

Figure TS.1

Remove Monitor Stand for Mounting

To prepare the monitor for alternate mounting purposes:

1. Place hands on each side of the monitor and lift up to the highest position. Remove the cable cover (Figure S.1).

2. Disconnect all cables.

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

NOTE: Handle with care when monitor facing down, for avoiding the damage to the front buttons.

4. Remove the 2 screws connecting the stand to the monitor (Figure S.2).

Figure S.1

English-6

Figure S.2

1-8

5. Lift up the stand to unlatch the upper hooks and remove the stand (Figure S.3).

6. Remove the 2 screws on the top of the monitor (Figure S.4). The monitor is now ready for mounting in an alternate

manner.

7. Connect the cables to the back of the monitor.

8. Reverse this process to re-attach stand.

NOTE: Use only VESA-compatible alternative mounting method.

Handle with care when removing stand.

English

Figure S.3

Figure S.4

Flexible Arm Installation

This LCD monitor is designed for use with a flexible arm. To mount the monitor to a flexible arm:

1. Follow the instructions on how Remove Monitor Stand for Mounting to remove the stand.

2. Using the 4 screws from the stand removal and attach the arm to the monitor (Figure F.1).

NOTE: The LCD monitor should only be used with an approved arm (e.g. GS mark). 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.

Thickness of Bracket (Arm)

2.0~3.2mm

4 Screws (4M) (Max Depth: 8.5mm)

100mm

Figure F.1

English-7

1-9

Weight of LCD assembly: 4.9kg MAX (LCD1970V)

5.4kg MAX (LCD1970NX)

Controls

OSM (On-Screen Manager) control buttons on the front of the monitor function as follows:

To access OSM menu, press any of the control buttons (MENU/EXIT, Left, Right, Down, Up). To change signal input, press the SELECT button (NX only). To change DV MODE, press the RESET button (NX only).

NOTE: OSM must be closed in order to change signal input.

LCD1970V LCD1970NX

Button

MENU/EXIT

Left/Right

Down/Up

SELECT

RESET

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

Moves the highlighted area left/right to select control menus. Moves the bar left/right to increase or decrease the adjustment.

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

Active Auto Adjust function. Enter the OSM sub menu.

Resets the highlighted control menu to the factory setting.

NOTE: When RESET is pressed in the main and sub-menu, a warning window will appear allowing you to cancel the

RESET function by pressing the MENU/EXIT button.

Brightness/Contrast Controls

BRIGHTNESS

Adjusts the overall image and background screen brightness.

CONTRAST

Adjusts the image brightness in relation to the background.

DV MODE (NX only)

Alows you to select the suitable setting for Movie, Picture and etc.

AUTO CONTRAST (Analog input only)

Adjusts the image displayed to optimal settings.

Auto Adjust (Analog input only)

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

Image Controls (Analog input only)

LEFT / RIGHT

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

DOWN / UP

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

H.SIZE

Adjusts the horizontal size by increasing or decreasing this setting.

FINE

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

English-8

1-10

Colour Control System

Colour Control System: Six colour presets select the desired colour setting (sRGB and NATIVE colour presets are

standard and cannot be changed).

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

NATIVE: Original colour presented by the LCD panel that is unadjustable.

sRGB: sRGB mode dramatically improves the colour fidelity in the desktop environment by a single standard RGB

colour space. With this colour supported environment, the operator could easily and confidently communicate colour without further colour management overhead in the most common situations.

Tools

OFF TIMER: Monitor will automatically power-down when the end user has selected a predetermined amount of

time.

HOT KEY: You can adjust the brightness and contrast directly. When this function is set to ON, you can adjust the brightness with left or right control and contrast with up or down control while the OSM menu is off.

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

Menu Tools

LANGUAGE: OSM control menus are available in eight languages.

OSM LEFT/RIGHT: You can choose where you would like the OSM control image to appear horizontally on your

screen.

OSM DOWN/UP: You can choose where you would like the OSM control image to appear vertically on your screen.

OSM Turn Off: The OSM control menu will stay on as long as it is in use. In the OSM Turn Off submenu, you can

select how long the monitor waits after the last touch of a button to shut off the OSM control menu.

OSM Lock Out: This control completely locks out access to all OSM control functions without Brightness and Contrast. When attempting to activate OSM controls while in the Lock Out mode, a screen will appear indicating the OSM controls are locked out. To activate the OSM Lock Out function, press SELECT, then right control button and hold down simultaneously. To deactivate the OSM Lock Out, press SELECT, then left control button and hold down simultaneously while in the OSM 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.

English

Information

The Information menu indicates the current input, display resolution, horizontal and vertical frequency, and polarity settings of the monitor. The model and serial numbers of your monitor are also indicated.

OSM Warning

OSM Warning menus disappear with Exit button.

NO SIGNAL: This function gives a warning when there is no Horizontal or Vertical Sync. After power is turned on or when there is a change of input signal, 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 Menu Tools.

OUT OF RANGE: When input signal is non-supported timing or the video signal doesn’t have proper timing, the Out of Range menu will appear.

English-9

1-11

Recommended use

Safety Precautions and Maintenance

FOR OPTIMUM PERFORMANCE, PLEASE NOTE

THE FOLLOWING WHEN SETTING UP AND USING

THE MULTISYNC LCD COLOUR MONITOR:

• DO NOT OPEN THE MONITOR. There are no user serviceable parts inside and opening or removing covers may expose

you to dangerous shock hazards or other risks. Refer all servicing to qualified service personnel.

• Do not spill any liquids into the cabinet or use your monitor near water.

• Do not insert objects of any kind into the cabinet slots, as they may touch dangerous voltage points, which can be harmful

or fatal or may cause electric shock, fire or equipment failure.

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

• Do not place this product on a sloping or unstable cart, stand or table, as the monitor may fall, causing serious damage to

the monitor.

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

• The inside of the fluorescent tube located within the LCD monitor contains mercury.

Please follow the bylaws or rules of your municipality to dispose of the tube properly.

• Do not bend power cord.

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

• Do not cover vent on monitor.

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.

• If glass is broken, handle with care.

• 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

CAUTION

• Image Persistence: Please be aware that LCD Technology may experience a phenomenon known as Image Persistence. Image Persistence occurs when a residual or “ghost” image of a previous image remains visible on the screen. Unlike CRT monitors, LCD monitors’ image persistence is not permanent, but constant images being displayed for a long period of time should be avoided. To alleviate image persistence, turn off the monitor for as long as the previous image was displayed. For example, if an image was on the monitor for one hour and a residual image remains, the monitor should be turned off for one hour to erase the image.

NOTE: As with all personal display devices, NEC-Mitsubishi Electronics Display recommends displaying moving images and using a moving screen saver at regular intervals whenever the screen is idle or turning off the monitor when not in use.

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.

English-10

1-12

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 40 cm and no further away than 70 cm from your eyes. The optimal distance is 50 cm.

• 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.

• 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 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.

Cleaning the LCD Panel

• When the liquid crystal panel is stained with dust or dirt, please wipe with soft cloth gently.

• Please do not rub the LCD panel with hard material.

• Please do not apply pressure to the LCD surface.

• Please do not use OA cleaner it will cause deterioration or discolor on the LCD surface.

Cleaning the Cabinet

• Unplug the power supply

• Gently wipe the cabinet with a soft cloth

• To clean the cabinet, dampen the cloth with a neutral detergent and water, wipe the cabinet and follow with a dry cloth.

NOTE: Many plastics are used on the surface of the cabinet. DO NOT clean with benzene, thinner, alkaline detergent,

alcoholic system detergent, glass cleaner, wax, polish cleaner, soap powder, or insecticide. Do not touch rubber or vinyl to the cabinet for a long time. These types of fluids and fabrics can cause the paint to deteriorate, crack or peel.

English

English-11

1-13

Specifications for LCD1970V

Monitor Specifications MultiSync LCD1970V Monitor Notes

LCD Module Diagonal: 48.2 cm/19.0 inches Active matrix; thin film transistor (TFT)

Native Resolution (Pixel Count): 1280 x 1024 pitch; 250 cd/m

Input Signal Video: ANALOG 0.7 Vp-p/75 Ohms

Display Colours 16,777,216 Depends on display card used.

Synchronization Range Horizontal: 31.5 kHz to 81.1 kHz Automatically

Viewing Angle Left/Right: 80°/80° (CR > 5)

Resolutions Supported 720 x 400*

Active Display Area Horizontal: 376.3 mm/14.8 inches

Power Supply AC 100-240V ~ 50/60Hz

Power Consumption 36W (typ) (without optional Sound Bar)

Current Rating 0.65-0.35A

Dimensions 412.5 mm (W) x 386.5-496.5 mm (H) x 220.0 mm (D)

Weight 7.0 kg (15.4 lbs)

Environmental Considerations

*1 Interpolated Resolutions: When resolutions are shown that are lower than the pixel count of the LCD module, text may appear different. This is normal and necessary for all current flat panel technologies when displaying non-native resolutions full screen. In flat panel technologies, each dot on the screen is actually one pixel, so to expand resolutions to full screen, an interpolation of the resolution must be done. *2 If your display is not showing a picture of the SOG and Composite Sync. Signal, please contact our hotline for further assistance.

NOTE: Technical specifications are subject to change without notice.

Viewable Image Size: 48.2 cm/19.0 inches liquid crystal display (LCD); 0.294 mm dot

white luminance;

450:1 contrast ratio, typical.

Sync: Separate sync.TTL Level

Horizontal sync. Positive/Negative Vertical sync. Positive/Negative Composite sync. Positive/Negative* Sync on Green (Video 0.7 Vp-p and Sync. 0.3 Vp-p)*

Vertical: 56.0 Hz to 75.0 Hz Automatically

Up/Down: 80°/80° (CR > 5)

: VGA-Text Some systems may not support all modes 640 x 480* 800 x 600* 832 x 624* 1024 x 768* 1152 x 870*

at 60 Hz to 75 Hz listed.

at 56 Hz to 75 Hz

at 75 Hz

at 60 Hz to 75 Hz

at 75 Hz

1280 x 1024 at 60 Hz to 75 Hz NEC-Mitsubishi Electronics Display cites

recommended resolution at 60 Hz for optimal display performance.

Vertical: 301.1 mm/11.9 inches

16.2 inches (W) x 15.2-19.5 inches (H) x 8.7 inches (D)

Operating Temperature: 5°C to 35°C/41°F to 95°F

Humidity: 30% to 80%

Feet: 0 to 10,000 Feet

Storage Temperature: -10°C to 60°C/14°F to 140°F

Humidity: 10% to 85%

Feet: 0 to 30,000 Feet

English-12

1-14

Specifications for LCD1970NX

Monitor Specifications MultiSync LCD1970NX Monitor Notes

LCD Module Diagonal: 48.2 cm/19.0 inches Active matrix; thin film transistor (TFT)

Native Resolution (Pixel Count): 1280 x 1024 pitch; 250 cd/m

Input Signal Video: ANALOG 0.7 Vp-p/75 Ohms Digital Input: DVI

Display Colours 16,777,216 Depends on display card used.

Synchronization Range Horizontal: 31.5 kHz to 81.1 kHz (Analog) Automatically

Viewing Angle Left/Right: 88°/88° (CR > 10)

Resolutions Supported 720 x 400*

Active Display Area Horizontal: 376.3 mm/14.8 inches

Power Supply AC 100-240V ~ 50/60Hz

Power Consumption 38W (typ) (without optional Sound Bar)

Current Rating 1.2-0.6A

Dimensions 412.5 mm (W) x 386.5-496.5 mm (H) x 220.0 mm (D)

Weight 7.5 kg (16.5 lbs)

Environmental Considerations

NOTE: Technical specifications are subject to change without notice.

Viewable Image Size: 48.2 cm/19.0 inches liquid crystal display (LCD); 0.294 mm dot

white luminance;

500:1 contrast ratio, typical.

Sync: Separate sync.TTL Level

Horizontal sync. Positive/Negative Vertical sync. Positive/Negative Composite sync. Positive/Negative* Sync on Green (Video 0.7 Vp-p and Sync. 0.3 Vp-p)*

31.5 kHz to 81.1 kHz (Digital) Automatically

Vertical: 56.0 Hz to 75.0 Hz Automatically

Up/Down: 88°/88° (CR > 10)

: VGA-Text Some systems may not support all modes

640 x 480* 800 x 600* 832 x 624* 1024 x 768* 1152 x 870*

at 60 Hz to 75 Hz listed.

at 56 Hz to 75 Hz

at 75 Hz

at 60 Hz to 75 Hz

at 75 Hz

1280 x 1024 at 60 Hz to 75 Hz NEC-Mitsubishi Electronics Display cites

recommended resolution at 60 Hz for optimal display performance.

Vertical: 301.1 mm/11.9 inches

16.2 inches (W) x 15.2-19.5 inches (H) x 8.7 inches (D)

Operating Temperature: 5°C to 35°C/41°F to 95°F

Humidity: 30% to 80%

Feet: 0 to 10,000 Feet

Storage Temperature: -10°C to 60°C/14°F to 140°F

Humidity: 10% to 85%

Feet: 0 to 40,000 Feet

English

English-13

1-15

Features

Thin-frame design creates more desktop space for you to work and play, while the flat screen’s crisp, bright images and crystal-

clear text deliver a comfortable viewing experience.

No Touch Auto Adjust automatically adjusts your optimal image settings upon initial power-on.

Colour Control System allows you to change between six colour settings on your display to match your personal preference.

Redesigned OSM controls allow you to quickly and easily adjust all elements of your screen image.

NaViSet software offers an expanded and intuitive graphical interface, allowing you to more easily adjust OSM display settings

via mouse and keyboard.

Height adjustable stand with tilt, swivel and cable management adds flexibility to your viewing preferences.

The flat screen’s crisp, bright images and crystal-clear text deliver a comfortable viewing experience.

ErgoDesign Features: Enhance human ergonomics to improve the working environment, protect the health of the user and

save money. Examples include OSM 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 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.

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

English-14

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.

• Check the Vacation Switch should be in the ON position.

• Front Power Switch and computer power switch should be in the ON position.

• Check to make sure that a supported mode has been selected on the display card or system being used. (Please consult display card or system manual to change graphics mode.)

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

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

Power Button does not respond

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

• Check the Vacation Switch on the back side of the monitor.

Image Persistence

• Please be aware that LCD Technology may experience a phenomenon known as Image Persistence. Image Persistence occurs when a residual or “ghost” image of a previous image remains visible on the screen. Unlike CRT monitors, LCD monitors’ image persistence is not permanent, but constant images being displayed for a long period of time should be avoided. To alleviate image persistence, turn off the monitor for as long as the previous image was displayed. For example, if an image was on the monitor for one hour and a residual image remains, the monitor should be turned off for one hour to erase the image.

NOTE: As with all personal display devices, NEC-Mitsubishi Electronics Display recommends displaying moving images

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

Image is unstable, unfocused or swimming is apparent

• Signal cable should be completely attached to the computer.

• Use the OSM Image Adjust controls to focus and adjust display by increasing or decreasing the fine total. When the display mode is changed, the OSM 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 Vacation Switch should be in the ON position.

Display image is not sized properly

• Use the OSM Image Adjust controls to increase or decrease the H. SIZE.

• 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.)

No Video

• If no video is present on the screen, turn the vacation switch off and on again.

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

English

English-15

1-17

TCO’03

Congratulations!

The display you have just purchased carries the TCO’03 Displays label. This means that your display is designed, manufactured and tested according to some of the strictest quality and environmental requirements in the world. This makes for a high performance product, designed with the user in focus that also minimizes the impact on our natural environment.

Some of the features of the TCO’03 Display requirements:

Ergonomics

• Good visual ergonomics and image quality in order to improve the working environment for the user and to reduce sight and strain problems. Important parameters are luminance, contrast, resolution, reflectance, colour rendition and image stability.

Energy

• Energy-saving mode after a certain time – beneficial both for the user and the environment

• Electrical safety

Emissions

• Electromagnetic fields

• Noise emissions

Ecology

• The product must be prepared for recycling and the manufacturer must have a certified environmental management system such as EMAS or ISO 14 001.

• Restrictions on:

- chlorinated and brominated flame retardants and polymers

- heavy metals such as cadmium, mercury and lead.

The requirements included in this label have been developed by TCO Development in cooperation with scientists, experts, users as well as manufacturers all over the world. Since the end of the 1980s TCO has been involved in influencing the development of IT equipment in a more user-friendly direction. Our labelling system started with displays in 1992 and is now requested by users and IT-manufacturers all over the world.

For more information, please visit

www.tcodevelopment.com

English-16

1-18

Manufacturer’s Recycling and Energy Information

NEC-Mitsubishi Electric Visual Systems Corp. is strongly committed to environmental protection and sees recycling as one of the company’s top priorities in trying to minimize the burden placed on the environment. We are engaged in developing environmentally-friendly products, and always strive to help define and comply with the latest independent standards from agencies such as ISO (International Organisation for Standardization) and TCO (Swedish Trades Union).

For more information, and for help in recycling your old NEC or Mitsubishi monitors, please visit our website at

http://www.nec-mitsubishi.com (in Europe) or

http://www.nmv.co.jp/environment (in Japan) or

http://www.necmitsubishi.com/markets-solutions/totaltrade (in USA).

Country-specific recycling programmes can also be found at:

Sweden - http://www.el-retur.se

Germany - http://www.recyclingpartner.de/

Holland - http://www.mirec.nl/

Japan - http://www.diarcs.com/

English

Energy saving:

This monitor features an advanced energy saving capability. When a VESA Display Power Management Signaling (DPMS) Standard signal is sent to the monitor, the Energy Saving mode is activated. The monitor enters a single Energy Saving mode.

LCD1970V

Mode Power consumption LED colour

Normal Operation Approx. 36W Green

Energy Saving Mode Less than 2W Amber

Off Mode Less than 1W Unlit

LCD1970NX

Mode Power consumption LED colour

Normal Operation Approx. 38W Green

Energy Saving Mode Less than 2W Amber

Off Mode Less than 1W Unlit

English-17

1-19

Serial Number Information

Refer to the serial number information shown below.

Manufactured Year :

( Last digit )

Manufactured Month :

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

EX.) SERIAL NUMBER LABEL

Model Name : LCD1970NX LCD1970NX-BK

SERIAL NO. :

g g g g g g g g g g

Classification code :

Discriminate by cabinet color

White : 0 Black : 1

Running number :

Note : This running number doesn’t reset at each month.

(Example)

Jan.: 00001, 00002, 00003, ….., 01234, Feb.: 01235, 01236, 01237, ….., 99999, 00001, Mar.: 00002, 00003, 00004, …..

Factory Code:

NPG China factory : Y

Control Code:

For B ver. (Europe) : B For C ver. (China) : C

2-1

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

1 14300471 --- SC,PL-CPIMS4*16*3K --- B / C 2 14900211 79PQ7860 STAND UNIT L194R WH White B / C 2 14900221 79PQ7861 STAND UNIT L194R BK Black B / C

For Europe

(NPG Part Number)

For China

(NMV Part Number)

Description

Cabinet

Color

Version

3-1

Symbol

3 14300471 --- SC,PL-CPIMS4*16*3K --- B / C 4 14300271 --- P3X8 ML(IN) White B / C 4 14300311 --- P3.0*8 MC(ZN) Black B / C 5 10107361 79PQ7832 BACK L194RJ (N) WH White B / C 5 10107371 79PQ7833 BACK L194RJ (N) BK Black B / C 6 14300801 --- SC #3FSUSMS*3*6*15K --- B / C

For Europe

(NPG Part Number)

For China

(NMV Part Number)

Description

Cabinet

Color

Version

3-2

Symbol

7 14000121 --- SCREW (CUP)3x8x15BF --- B / C 8 14300201 --- SCREW 4#-40Tx4.8HLx4HLx5 --- B / C

9 14000491 --- SC,CBIPSx4x8x15B --- B / C 10 R3201481 79PQ7825 WIRE CC12P 1571#30L180 --- B / C 11 JM100401 79PQ7815 U INVERT-POWER 1970V AU --- B / C 12 AM0RJ1ML 79PQ7808 MAIN INSERT ASSY --- B / C

For Europe

(NPG Part Number)

CN56

For China

(NMV Part Number)

Description

Cabinet

Color

Version

CN55

CN54

CN53

CN2

3-3

S404

S402

S401

Symbol

13 14300801 --- SC #3FSUSMS*3*6*15K --- B / C

14 10107611 79PQ7840 BEZEL WH(N) BC L194RJ White B /C

14 10107611 --- BEZEL WH(N) BC L194RJ Black B

14 --- 79PQ7842 BEZEL BK(N) C L194RJ Black C

15 12001211 79PQ7855 CHASSIS BASE 1970NXH,(LPL --- B / C

16 R3900251 79PQ7804 WIRE SW 1015#18L60 GRAY White B / C

16 R3900241 79PQ7803 WIRE SW 1015#18L60 BLK Black B / C

17 117007 71 79PQ7849 COVER UNIT WH L194RJ White B / C

17 11700781 79PQ7850 COVER UNIT BK L194RJ Black B / C

18 AS0RH1ML 79PQ7812 SW INSERT ASSY --- B / C

For Europe

(NPG Part Number)

For China

(NMV Part Number)

Description

Cabinet

Color

Version

J801

3-4

Symbol

19 R3201471 79PQ7824 WIRE CC30P 1589#30L220 --- B / C

For Europe

(NPG Part Number)

3A684091

(NMV Part Number)

For China

(NMV Part Number)

3A684091 TFT LM190E02-A4K5 --- B / C

Description

Cabinet

Color

Version

3-5

ADJUSTMENT PROCEDURES

TABLE OF CONTENTS

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

2. Adjustment Conditions ............................................................................................................ 4-2

2.1 Time for Adjustment .......................................................................................................... 4-2

2.2 Measuring Instruments, Jigs, and Tools............................................................................ 4-2

2.3 Power Supply Voltage....................................................................................................... 4-2

2.4 Aging ................................................................................................................................. 4-2

3. Default Setting ........................................................................................................................ 4-3

4. Basic Operation (Front Control Panel Layouts)...................................................................... 4-3

Page

5. Set Adjustments...................................................................................................................... 4-4

5.1 Power On .......................................................................................................................... 4-4

5.2 Factory Mode .................................................................................................................... 4-5

5.2.1 How to Enter Service Mode........................................................................................ 4-5

5.2.2 How to Use Service Mode .......................................................................................... 4-6

5.2.3 How to Exit Service Mode ........................................................................................ 4-10

5.2.4 Burn in Mode ............................................................................................................ 4-10

6. Auto Contrast Adjustment ......................................................................................................4-11

6.1 ADC Bias and Gain Control .............................................................................................4-11

6.2 Panel Brightness Check...................................................................................................4-11

6.3 Panel Color Check ...........................................................................................................4-11

6.4 Color Temperature Check ................................................................................................4-11

6.5 Reference Signal Timing ................................................................................................. 4-12

4-1

1. Application

This adjustment specification should be applied to the adjustment of the LCD1970NX (L194RJ).

2. Adjustment Conditions

2.1 Time for Adjustment

Adjustments should be made only when the unit is fully assembled.

2.2 Measuring Instruments, Jigs, and Tools

When adjusting the unit, use measurement instruments, jigs, and tools specified below.

a. Use a signal generator that can produce an all white, or all black screens. Signal timing should be

VG-819.

The amplitude of each signal (R, G, B) output should be maintained at 0.7Vp-p ± 0.05V when a load of 75 Ω is connected.

2.3 Power Supply Voltage

INPUT: 100Vac ~ 240Vac ±10%, 47~63Hz

2.4 Aging

Not required.

4-2

+ 74 hidden pages