LG 575C, CB575BC Service Manual

AGENCY REGULATORY NOTICE

FCC	This equipment has been tested and found to comply
Compliance	with the limits for a Class B digital device pursuant to
Statement	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 the party responsible 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	This Class B digital apparatus meets all
D.O.C.	requirements of the Canadian Interference-Causing
Notice	Equipment Regulations.

Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

Conformity

Notice

Products with the “CE” Marking comply with the EMC Directive(89/336/EEC) and LOW VOLTAGE Directive (73/23/EEC) issued by the Commission of the European Community.

Compiance with these directives implies conformity to the following European Norms :

•EN 55022	; Radio Frequency Interference
•EN 50082-1:1992	; Electromagnetic Immunity
•EN 60555-2	; Power Line Harmonics
•EN 60555-3	; Voltage Fluctuations
•EN 60950	; Product Safety

Environmental Labelling of Personal Computers

Congratulations! You have just purchased a TCO’95 approved and labelled 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 to the further development of environmentallyadapted electronic 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 electronic equipment are concerned is that environmentally harmful substances are used both in the products and during their manufacture. Since it has not been possible so far for the majority of electronic 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 both the working and natural environment viewpoints. Since all types of conventional electricity generation have a negative effect on the environment (acidicand climaticinfluencing emissions, radioactive waste, etc.), it is vital to conserve energy. Electronic equipment in offices consumes as enormous amount of energy, since it is often routinely left running continuously.

What does labelling involve?

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

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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, among other things, restriction on the presence and use of heavy metals, brominated and chlorinated flame retardants, CFCs (freons), and chlorinated solvents. 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, along with physical and visual ergonomics and good usability.

The following is a brief summary of the environmental requirements met by this product. The complete environmental criteria document may be ordered from:

TCO Development Unit

Linnegatan 14, S-11494 Stockholm, Sweden

FAX +46-8 782 92 07

E-mail (Internet): development@tco.se

Current information regarding TCO’95 approved and labelled products may also be obtained on the Internet using the address:

http://www.tco-info.com/

TCO’95 is a co-operative project between:

Naturskydds	NUTEK	SEMKO
föreningen	Näringsoch teknikutvecklingsverket

TCO’95 Environmental Requirements

Brominated flame retardants are present in printed circuit boards, cabling, casings, and housings, and are added to delay the spread of fire. Up to 30% of the plastic in a computer casing can consist of flame-retardant substances. These are related to another group of environmental toxins, PCBs, and are suspected of giving rise to similar harm, including reproductive damage in fish-eating birds and mammals. Flame retardants have been found in human blood, and researchers fear that they can disturb fetus development.

Bio-accumulative TCO’95 demands require that plastic components weighing more than 25 grams must not contain flame retardants with organically bound chlorine or bromine.

Lead can be found in picture tubes, display screens, solder, and capacitors. Lead damages the nervous system and in higher doses causes lead poisoning. The relevant bio-accumulative TCO’95 requirement permits the inclusion of lead, as no replacement has yet been developed.

Cadmium is present in rechargeable batteries and in the color-generating layers of certain computer displays. Cadmium damages the nervous system and is toxic in high doses. The relevant bio-accumulative TCO’95 requirement states that batteries may not contain more than 25 ppm (parts per million) of cadmium. The color-generating layers of display screens must not contain any cadmium.

Mercury is sometimes found in batteries, relays and switches. Mercury damages the nervous system and is toxic in high doses. The relevant bioaccumulative TCO’95 requirement states that batteries may not contain more than 25 ppm of mercury and that no mercury is present in any of the electrical or electronic components concerned with the display unit.

CFCs (freons) are sometimes used for washing printed circuit boards and in the manufacture of expanded foam for packaging. CFCs break down ozone and thereby damage the ozone layer in the atmosphere, causing increased reception on Earth of ultra-violet light with consequent increased risks of skin cancer (malignant melanoma). The relevant TCO’95 requirement: Neither CFCs nor HCFCs may be used during the manufacture of the product or its packaging.

1 Bio-accumulative means that the substance accumulates within living organisms.

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 international 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.

Table of Contents

Introduction

Features....................................................................................................

Monitor Registration

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

Important Precautions

On Safety ..................................................................................................	A3
On Installation .................................................................................................	A4
On Cleaning ....................................................................................................	A4
On Repacking .................................................................................................	A4
Connecting the Monitor ..............................................................................	A5
Location and Function of Controls
Front View .................................................................................................	A6
Rear View .......................................................................................................	A6
Control Panel Function
Front Panel Controls .......................................................................................	A7
OSD Button.....................................................................................................	A7
Buttons............................................................................................	A7
SET Button......................................................................................................	A7
Power Button ..................................................................................................	A7
Power Indicator ...............................................................................................	A7
On Screen Display (OSD) Control Adjustment...................................	A8
On Screen Display (OSD) Selection and Adjustment ......................	A9
Video Memory Modes
Display Modes(Resolution) ...........................................................................	A12
User Modes...................................................................................................	A12
Recalling Display Modes...............................................................................	A12
Energy Saving Design
Power Consumption......................................................................................	A13
MPR II, Self Diagnostics and DDC
Low Radiation Compliance (MPR II).............................................................	A14
Self Diagnostics ............................................................................................	A14
DDC (Display Data Channel) ........................................................................	A14
Troubleshooting and Service
Troubleshooting ............................................................................................	A15
Service ..........................................................................................................	A16
Specifications
Specifications ..........................................................................................	A17

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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

■The monitor is a 15 inches (13.8 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.

■The monitor provides crisp text and vivid color graphics with VGA, SVGA, XGA, and VESA Ergonomic modes (noninterlaced), 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.

■Digitally controlled auto-scanning is done with the microprocessor for horizontal scan frequencies between 30 and 70kHz, and vertical scan frequencies between 50-160Hz. The microprocessor-based intelligence allows the monitor to operate in each frequency mode with the precision of a fixed frequency monitor.

■The microprocessor-based digital controls allow you to conveniently adjust a variety of image controls by using the OSD (On Screen Display).

■The monitor has 31 memory locations for display modes, 6 of which are factory preset to popular video modes.

■This monitor is capable of producing a maximum horizontal resolution of 1280 dots and a maximum vertical resolution of 1024 lines. It is well suited for CAD work and sophisticated windowing environments.

■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.

■For greater user health and safety, this monitor complies with the stringent Swedish TCO’95 requirements for low radiation emissions.

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