Lg 790sc User manual

Website address: http://www.LGEservice.com

e-mail address: [email protected]

Color Monitor

USER GUIDE

MANUEL D'UTILISATION

MODEL : 790SC

Please read this manual carefully before operating your set.

Retain it for future reference.

Record model number and serial number of the set.

See the label attached on the back cover and quote this

information to your dealer when you require service.

Avant d’utiliser ou de régler cet appareil pour la première

fois, lisez attentivement ce manuel d’instructions.

i

FCC Compliance Statement

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 using

one or more of the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and the receiver.

- Connect the equipment into an outlet on a circuit different from

that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for

help.

Caution: Changes or modifications not expressly approved by LG

Electronics Inc. for compliance could void the user's (or your) authority

to operate the equipment. Only peripherals (digital input/output devices,

terminals, printers, etc.) certified to comply with the Class B limits may

be attached to this monitor. Operation with non-certified peripherals is

likely to result in interference to radio and TV reception.

Only shielded Signal Cables may be used with this System.

Canadian D. O. C. Notice

This Class B digital apparatus meets all requirements of the Canadian

Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe B respecte toutes les exigences du

Règlement sur le matériel brouilleur du Canada.

Environmental Labelling of Personal Computers

ii

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iii

TCO’95 Environmental Requirements

iv

v

Shipping Package

The packaging material can be recycled, or you can save it to return

the monitor to a service center for repair or disposal.

CFC Compounds in Distribution Packaging

Cushioning material used for shipping finished monitors are not

manufactured with nor do they contain any CFC compounds.

Design for Disassembly/Recycling

These monitors have been designed for easy end-of-life disassembly

and recycling. Fasteners are generally of the same type for efficient

disassembly. Components made of different materials can be easily

separated and plastics have been identified using intermational

symbols to aid in recycling.

Monitor Disposal

WARNING

If you need to dispose of a monitor, ask a qualified service

representative for the proper procedure. Improper disposal

could result in personal injury from implosion.

vi

Table of Contents

Introduction

Features....................................................................................................A1

Monitor Registration

Notice........................................................................................................A2

Trademark Acknowledgments ....................................................................A2

Important Precautions

On Safety..................................................................................................A3

On Installation.................................................................................................A4

On Cleaning....................................................................................................A4

On Repacking.................................................................................................A4

Connecting the monitor

Connecting to any IBM VGA PC Compatible System...................................A6

Connecting to an Apple Macintosh II, Centris and Quadra.............................A7

Location and Function of Controls

Front View.................................................................................................A8

Rear View .......................................................................................................A8

Control Panel Function

OSD Enter Button...........................................................................................A9

OSD Exit Button..............................................................................................A9

OSD Select/Adjustment Buttons.....................................................................A9

Brightness Adjustment Control .......................................................................A9

Contrast Adjustment Control...........................................................................A9

Power (DPMS) Indicator.................................................................................A9

Power ON/OFF Button....................................................................................A9

On Screen Display (OSD) Control Adjustment.................................A10

On Screen Display (OSD) Selection and Adjustment ....................A11

Video Memory Modes

Factory Preset Timing Signal Chart..............................................................A17

User Modes...................................................................................................A19

Recalling Display Modes...............................................................................A19

Energy Saving Design

Power Consumption......................................................................................A20

MPR II, Self Diagnostics and DDC

Low Radiation Compliance (MPR II).............................................................A21

Self Diagnostics............................................................................................A21

DDC (Display Data Channel)........................................................................A21

Troubleshooting and Service

Troubleshooting............................................................................................A22

Service..........................................................................................................A23

Specifications

Specifications ..........................................................................................A24

Monitor Limited Warranty.....................................................................A26

A1

Introduction

Thank you for purchasing a high resolution monitor. It will give you

high resolution performance and convenient reliable operation in a

variety of video operating modes.

Features

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The monitor is a 17 inches (15.9 inches viewable ) intelligent,

microprocessor based monitor compatible with most analog RGB

(Red, Green, Blue) display standards, including IBM PC®, PS/2®,

Apple®, Macintosh®, Centris®, Quadra®, and Macintosh II family.

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The monitor provides crisp text and vivid color graphics with

VGA, SVGA, XGA, and VESA Ergo modes (non-interlaced), and

most Macintosh compatible color video cards when used with the

appropriate adaptor. The monitor's wide compatibility makes it

possible to upgrade video cards or software without purchasing a

new monitor.

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Digitally controlled auto-scanning is done with the micro-

processor for horizontal scan frequencies between 30 and

100kHz, and vertical scan frequencies between 50-200Hz. The

microprocessor-based intelligence allows the monitor to operate

in each frequency mode with the precision of a fixed frequency

monitor.

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The microprocessor-based digital controls allow you to adjust

conveniently a variety of image controls by using the OSD (On

Screen Display).

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The monitor has 38 memory locations for display modes, 12 of

which are factory preset to popular video modes.

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This monitor is capable of producing a maximum horizontal

resolution of 1600 dots and a maximum vertical resolution of

1200 lines. It is well suited for CAD work and sophisticated

windowing environments.

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For greater user health and safety, this monitor complies with the

stringent Swedish TCO’95 requirements for low radiation

emissions.

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For low cost of monitor operation, this monitor is certified as

meeting the EPA Energy Star requirements, and utilizes the

VESA Display Power Management Signalling (DPMS) protocol

for power saving during non-use periods.

A2

Monitor Registration

The model and serial numbers are found on the rear of this unit.

These numbers are unique to this unit and not available to others.

You should record requested information here and retain this guide

as a permanent record of your purchase. Staple your receipt here.

Date of Purchase :

Dealer Purchased From :

Dealer Address :

Dealer Phone No. :

Model No. :

Serial No. :

Notice

strictly prohibited without the written permission of LG Electronics Inc.

Trademark Acknowledgments

LG is a trademark of LG Electronics Inc.

IBM is a registered trademark and VGA is a trademark of

International Business Machines Corporation.

Warning : To reduce the risk of fire or electric shock, do not

expose this appliance to rain or moisture.

Avertissement :

Ne pas placer cet appareil dans un endroit humide.

Cela peut entraîner un incendie ou une décharge électrique.

A3

Important Precautions

This unit has been engineered and manufactured to assure your

personal safety, but improper use can result in potential electrical

shock or fire hazard. In order not to defeat the safeguards

incorporated in this monitor, observe the following basic rules for its

installation, use, and servicing. Also follow all warnings and

instructions marked directly on your monitor.

Use only the power cord supplied with the unit. In case you use

another power cord, make sure that it is certified by the applicable

standards (UL/CSA or VDE) if not being provided by the supplier.

Operate the monitor only from a power source indicated in the

specifications of this manual or listed on the monitor. If you are not

sure what type of power supply you have in your home, consult with

your dealer.

Overloaded AC outlets and extension cords are dangerous. So are

frayed power cords and broken plugs. They may result in a shock or

fire hazard. Call your service technician for replacement.

Do not Open the Monitor

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There are no user serviceable components inside.

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There are Dangerous High Voltages inside, even when the power

is OFF.

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Contact your dealer if the monitor is not operating properly.

To Avoid Personal Injury :

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Do not place the monitor on a sloping shelf unless properly secured.

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Use only a stand recommended by the manufacturer.

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Do not try to roll a stand with small casters across thresholds or

deep pile carpets.

To Prevent Fire or Hazards:

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Always turn the monitor OFF if you leave the room for more than a

short period of time. Never leave the monitor ON when leaving the

house.

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Keep children from dropping or pushing objects into the monitor's

cabinet openings. Some internal parts carry hazardous voltages.

On Safety

A4

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Do not add accessories that have not been designed for this monitor.

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During a lightning storm or when the monitor is to be left unattended

for an extended period of time, unplug it from the wall outlet.

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Do not bring magnetic devices such as magnets or motors near the

picture tube.

Do not allow anything to rest upon or roll over the power cord, and

do

not place the monitor where the power cord is subject to damage.

Do not use this monitor near water such as near a bathtub, washbowl,

kitchen sink, laundry tub, in a wet basement, or near a swimming

pool.

Monitors are provided with ventilation openings in the cabinet to

allow the release of heat generated during operation. If these

openings are blocked, built-up heat can cause failures which may

result in a fire hazard. Therefore, NEVER:

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Block the bottom ventilation slots by placing the monitor on a

bed, sofa, rug, etc.

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Place the monitor in a built-in enclosure unless proper ventilation

is provided.

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Cover the openings with cloth or other material.

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Place the monitor near or over a radiator or heat source.

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Unplug the monitor before cleaning the face of the picture tube.

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Use a slightly damp (not wet) cloth. Do not use an aerosol

directly on the picture tube because overspray may cause

electrical shock.

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Do not throw away the carton and packing materials. They make

an ideal container in which to transport the unit. When shipping

the unit to another location, repack it in its original material.

On Installation

On Cleaning

On Repacking

A5

Connecting the Monitor

On the back of the monitor are two plug-in connections; one for the AC

power cord, and the others for the signal cable from the video card.

AC Power Connection

One end of the AC power cord is connected into the AC power connector

on the back of the monitor. The other end is plugged into a properly

grounded three-prong AC outlet. The monitor's auto-sensing power supply

can automatically detect 100-120V AC or 200-240V AC, 50 or 60Hz.

Signal Cable Connection

The connector for the signal cable is located on the back of the

monitor. The 15 pin VGA connectors on the back of the monitor allow

for a wide variety of video controllers to be connected to the monitor.

Examples of signals that might be sent to the monitor include signals

from IBM PC and compatibles, Apple Macintosh, Centris and

Quadra.

The supplied signal cable consists of 15 pin VGA connectors at both

ends, suitable for connections to an IBM PC or compatible.

Other generic cables or adapters may be used for connections to your

equipment, as long as they meet the compatible signal requirements

to activate this monitor (see page A24 for input specifications). For

Apple Macintosh use, a separate plug adapter is needed to change

the 15 pin high density (3 row) D-sub VGA connector on the supplied

cable to a 15 pin 2 row connector. Examples of typical connections

are shown below. Select the connection example that fits your needs.

A6

Connecting to any IBM VGA PC compatible system

Figure 3 shows the signal cable connections from the monitor to the

Video Graphics Array (VGA) port typical in an IBM PC or PC

compatible. This also applies to any graphics video card for PC-CAD

or workstation that has a 15 pin high density (3 row) D-Sub connector.

1.Power off both the monitor and PC.

2.Connect the 15 pin VGA connector of the supplied signal cable to

the output VGA video connector on the PC and the matching

input connector on the rear of the monitor. The connectors will

mate only one way. If you cannot attach the cable easily, turn the

connector upside down and try again. When mated, tighten the

thumbscrews to secure the connection.

3.Power ON the PC, then the monitor.

4.If you see the SELF DIAGNOSTICS message, check the signal

cable and connectors.

5.After using the system, power OFF the monitor, then the PC.

Figure 3.

Power Cord Signal Cable

D-15P

A7

Connecting to an Apple Macintosh II, Centris and Quadra

Figure 4 shows the connection to an Apple Macintosh, using a

separately purchased adapter.

1.Power OFF both the monitor and the PC.

2.Locate the appropriate MAC to VGA adapter block at your local

computer store. This adapter changes the high density 3 row 15

pin VGA connector to the correct 15 pin 2 row connection to mate

with your MAC. Attach the other end of the signal cable to the

side of the adapter block with 3 rows.

3.Connect the attached adapter block/signal cable to the video

output on your MAC.

4.Power ON the PC, then the monitor.

5.If you see the SELF DIAGNOSTICS message, check the signal

cable and connectors.

6.After using the system, power OFF the monitor, then the PC.

Figure 4.

Power Cord Signal Cable

D-15P

Adapter 15P

A8

Location and Function of Controls

Front View

AC Power Socket

Power ON/OFF

Switch of the Monitor

D-Sub Signal Connector

ID Label

Power (DPMS)

Indicator

Rear View

Power ON/OFF Button

Digital Control Panel

Brightness Adjustment Control

Contrast Adjustment Control

Location and Function of Controls

Note : Turn on the monitor using the ON/OFF switch on the rear of the monitor. This

switch cuts off the power supply to the monitor.

A9

OSD Exit Button

OSD Enter Button

OSD Select /Adjustment Button

Brightness Adjustement Control

Contrast Adjustement Control

Power (DPMS) Indicator

Power ON/OFF Button

Control Panel Function

Front Panel Controls

OSD Enter Button Use this button to start/enter and exit from

the On Screen Display (OSD). If there is no

OSD on the screen, One click (press) of this

button will show the Main Menu.

To disappear of the OSD on the screen.

Use this knob for selecting (highlighting) an

OSD icon to be adjusted. It is also used for

selecting the level of the selected item to be

adjusted.

OSD Exit Button

OSD Select/

Adjustment Buttons

Used to adjust the brightness of the screen.Brightness

Adjustment Control

Adjust the display to the contrast desired.

Contrast

Adjustment Control

This indicator lights up green when the

monitor operates normally. If the monitor is in

DPM (Energy Saving) mode (stand-by/

suspend/power off), this indicator color

changes to amber.

Power (DPMS)

Indicator

Use this button to turn the monitor on or off.Power ON/OFF

Button

Control Function

A10

Making adjustments to the image size, position and operating

parameters of the monitor are quick and easy with the On Screen

Display Control system, using only the Enter button and Adjustment

Control buttons. A quick example is given below to familiarize you

with the use of the controls. Following this section is an outline of the

available adjustments and selections you can make using the OSD.

Note : (Monitor and PC should be ON, with an image or prompt on

the screen). A single press of the ENTER button will present you

with the Main Menu of the on screen display system with the first

highlighted.

1.The OSD system should look like:

2.To adjust, Press the enter button ( ) once.

The display will look like:

When you are done, Press the main button ( )once to return to

main menu to make another selection.

3.You want to move the next icon, Adjust the next button (

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)control.

The display will look like:

On Screen Display (OSD) Control Adjustment

BASIC ADJUSTMENTS

ENTER: SEL:

OSD ETC

68.7kHz/85Hz

SEL:

OSD ETC

H POSITION

ENTER: SEL:

68.7kHz/85Hz

SEL:

OSD ETC

H POSITION

EXIT: ADJ:

MIN MAX

On Screen Display(OSD) Selection and Adjustment

You were introduced to the procedure of selection and adjusting an

item using the OSD system.

Listed below are the icons, icon names, and icon descriptions of the

items that are shown on the Menu.

A11

To move picture image left and right.

Horizontal Position

OSD Adjust Description

Horizontal Size

Vertical Position

Vertical Size

BASIC ADJUSTMENTS

ENTER: SEL:

OSD ETC

68.7kHz/85Hz

SEL:

OSD ETC

H POSITION

ENTER: SEL:

68.7kHz/85Hz

SEL:

OSD ETC

H POSITION

EXIT: ADJ:

MIN MAX

To adjust image width.

To move image up and down.

To adjust image height.

If the monitor is operating in a factory

preset mode, this control will reset the

image to the factory preset mode.

If the monitor is operating in a user

mode, this control has no effect.

Recall

To correct image rotation.

Tilt

Zoom

To adjust horizontal and vertical image

size simultaneously.

A12

OSD Adjust Description

Side pincushion balance

Parallelogram

Pin S Adjust

Pin W Adjust

GEOMETRY

ENTER: SEL:

OSD ETC

68.7kHz/85Hz

SEL:

OSD ETC

PINCUSHION

ENTER: SEL:

68.7kHz/85Hz

SEL:

OSD ETC

MIN MAX

PINCUSHION

EXIT: ADJ:

To correct the balance of both sides bowling.

This control adjusts for a skewing of the

screen image.

To correct the balance of both sides S bowling.

To correct the balance of both sides W bowling.

Select the Recall screen to reset Side

Pincushion Balance, Parallelogram, Pin S

Adjust and Pin W Adjust to their original

factory preset settings.

If the monitor is operating in a user mode,

this control has no effect.

Recall

Side Pincushion

Trapezoid

To correct the bowing in and out of the image.

To correct geometric distortion.

A13

Reduce horizontal moire when

interference patterns of dark steady wary

lines appear on your screen. The moire

adjustments may affect the focus of the

screen.

Horizontal Moire

OSD Adjust Description

Vertical Moire

Horizontal Convergence

Purity

IMAGE

ENTER: SEL:

OSD ETC

68.7kHz/85Hz

SEL:

OSD ETC

H MOIRE

ENTER: SEL:

68.7kHz/85Hz

SEL:

OSD ETC

H MOIRE

EXIT: ADJ:

MIN MAX

Reduce vertical moire when interference

patterns of dark steady wary lines

appear on your screen. The moire

adjustments may affect the focus of the

screen.

This item allows you to adjust the

horizontal convergence.

The horizontal convergence control adjust

the alignment of the red and blue

horizontal fields.

This control adjust the purity of the overall

image. You should only use this control it

you notice an unevenness in a color.

U

Used to demagnetize the picture to give a

move account image and color.

Degauss

LG 790SC User manual

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