Haier HL19KN1 Schematic

Haier

Model No. : HL19KN1 CHASSIS:

COLOR TV

MST721

This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does

not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products

powered b electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the

product deal with in this service information by anyone else could result in serious injury or death.

WARNING

2009 (Qingdao Electronics

law.

limited company

)

Tableofconents

General Information…………...............……………………………………………………..3

1.1. General Guidelines...………………………………………………………………….. ..3

1.2. Important Notice…………………………………………………………………………..3

1.3. How To Read This Service Manual………………………………………………… .4

2. Speciflcations……………………………………………………………………………..........5

3. Location Of Controls And Components…………………………………...................…......7

3.1Board Location……………………………….. ………………………………….……... .7

3.2 Main Board…………….……………………………….. ………………………………...8

3.3 Power Board……………………………….. …………………………………………...12

3.4 Lcd Panel……………………………….. …………………………………………….…13

4.Disassemble And Assemble………………………………………………………….........…14

5. Installation Instructions…………………………………………………………...................19

6. Operation Instructions…………………………………………………………….............….24

6.1 Front Panel Controls……………………………….. …………………………………....24

6.2 Back Panel Controls……………………………….. ………………………………..…...24

6.3 Universal Remote Controller……………………………….. …..……………………….26

7. Measurements And Adjustments…………………………………………………................27

8. Electrical Parts .………………………………………………………........... .............29

…………………………………………………………………………..………..2

CONTENT

8.1Connetive Wire Photo......................................................................................................29

9. Trouble Shooting……………………………………………………………………………...40

8.2Circuit Diagram................................................................................................................29

1. General Information

1-1 General Guidelines

When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

After servicing, make the following leakage current checks to prevent the customer from being

exposed to shock hazards.

1) Leakage Current Cold Check

2) Leakage Current Hot Check

3)Prevention of Electro Static Discharge(ESD)to Electrostatically Sensitive

1-2 Important notice

1-2-1. Follow the regulations and warnings

Most important thing is to list up the potential hazard or risk for the service personnel to open the

units and disassemble the units. For example, we need to describe properly how to avoid the

possibility to get electrical shock from the live power supply or charged electrical parts (even the

power is off).

This symbol indicates that high voltage is present inside. It is dangerous to make any king of contact with any inside part of this product.

This symbol indicates that there are important operating and maintenance instructions in the literture accompanying the appliance

1-2-2. Be careful to the electrical shock

To prevent damage which might result in electric shock or fire, do not expose this TV set to rain or

excessive moisture. This TV must not be exposed to dripping or splashing water, and objects

Filled with liquid, such as vases, must not be place on top of or above the TV

1-2-3. Electro static discharge (ESD)

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such Components commonly are called Electrostatically Sensitive (ES) Devices. The following tech-niquesshouldbeusedtohelpreducetheincidenceofcomponentdamagecausedbyelectro Static discharge (ESD).

1-2-4. About lead free solder (PbF)

This product is manufactured using lead-free solder as a part of a movement within the consum-er

products industry at large to be environmentally responsible. Lead-free solder must be used in the

servicing and repair of this product.

1-2-5. Use the genewing parts (specified parts)

Special parts which have purposes of fire retardant (resistors),high-quality sound (capacitors), low

noise(resistors), etc. are used. When replacing any of components, be sure to use only manufacture's specified parts shown in the parts list.

Safety Component

● Components identified by mark have special characteristics important for safety.

1-2-6. Safety Check after Repairment

Confirm that the screws ,parts and wiring which were removed in order to service are put in the

original positions, or whether there are the portions which are deteriorated around the serviced

places serviced or not. Check the insulation between the antenna terminal or external metal and

the AC cord plug blades. And be sure the safety of that.

Insuration Test

1. Unplug the plug from the AC outlet.

2. Remove the antenna terminal on TV and turn on the TV.

3. Insulation resistance between the cord plug terminals and the eternal exposure metal

should be more than M ohm by using the 500V insulation resistance meter

4. If the insulation resistance is less than M ohm, the inspection repair should be required. If you have not the 500V insulation resistance meter, use a Tester. External exposure metal: Antenna terminal Headphone jack

1-2-7. Ordering Spare Parts

Please include the following informations when you order parts. (Particularly the Version

letter)

1. Model number and Version letter The model number can be found on the back of each product and the Version letter can be found at the end of the serial number.

2. Part No. and Description

You can find them in your service manual.

1-2-8. Photo used in this manual

The illustration and photos used in this Manual may not base on the final design of products, which may differ from your products in some way.

1-3. How to read this Service Manual

1-4-1. Using Icons

Icons are used to attract the attention of the reader to specific information. The meaning of each

described in the table below:

Note:

A “note” provides information that is not indispensable, but may nevertheless be valuable to the

reader, such as tips and tricks.

Caution:

A “caution” is used when there is danger that the reader, through incorrect manipulation, may damage equipment, loose data, get an unexpected result or has to restart(part of) a procedure.

Warning:

A “warning” is used when there is danger of personal injury.

Reference:

icon is

A “reference” guides the reader to other places in this binder or in this manual, where he/she will find additional information on a specific topic.

2. Specification

Model

HL19KN1

Screen size 18.5 inch

Aspect ratio

Brightness

Contrast Ratio

Angel of view

Color display

OSD language

3D decoder

2D comb filter

DNR

3A ENGINE

Same picture split demo(SPD)

double picture demo (DPD)

16:9

400cd/m2

800:1

H170/V160

16.7M

English,

YES

AV stereo

Surrounding sound

NICAM

MUSIC/STANDARD/THEATRE/USE

Bass, Treble

Balance

BBE

LIP SYNC

Equalizer

Earphone

Mute

AV input

DVD terminal

YES

MUSIC/THEATRE/PERSONAL/VOICE

YES

S-video jack

YES

Y P

YES

Monitor out

D-SUB jack

DVI socket

HDMI

SCART jack

Windows Menu

pc automatic adjust

movie mode

Semitransparent menu

ZOOM

16:9 mode

ADVANCED 4:3

PIP

YES

POP

PBP

3A WINDOWS

ATS

Nation Select

Channel List

Input Frequency by Manual and Channel

Number Input

Lock

TELTEXT

NO. of built-in speakers

NO. of outer speakers

Color display

NO. of preset channels

YES

240

100

OSD language

Color system

Audio system

Audio output power(Built-in)(W)

English

PAL/SECA M

DK,BG,I, LL'

1.5W×2

Audio output power(outer)(W)

Total power input（W）

Voltage range（V）

Power frequency（Hz）

Time of sleep timer(MINS)

Net weight(KG)

Gross weight(KG)

Net dimension(MM)

Packaged dimension(MM)

60W

AC150V~AC240V

50~60Hz

240Min

4.67

5.73

471/189/411

530/225/460

3. LOCATION OF CONTROLS AND COMPONENTS

3.1. Board Location

No. Parts number Description

A Board

B Board

MainBoard Assembly

Power adaptor

Speaker

3.2.A.Board----MainBoard

3.2. 1 Function Description: Main Board：

Process signal which incept from exterior equipment，then translate into signal that panel can display.

3.2.2 Connector definition

Main board connector

LCDS Connector (CN2)

Signal

Pin number

name Description

1 LCD-VDD

2 LCD-VDD 3 LCD-VDD 4 GND 5 GND

Supply voltage to Panel Supply voltage to Panel Supply voltage to Panel

Ground Ground

6 GND

Ground

7 RXO0- LVDS ODD 0–Signal 8 RXO0+ LVDS ODD 0 + Signal

9 RXO1- LVDS ODD 1 - Signal 10 RXO1+ LVDS ODD 1 + Signal 11 RXO2- LVDS ODD 2 - Signal 12 RXO2+ LVDS ODD 2 + Signal 13 GND 14 GND

Ground

15 RXOC- LVDS ODD Clock - Signal 16 RXOC+ LVDS ODD Clock + Signal 17 RXO3- LVDS ODD 3 - Signal 18 RXO3+ LVDS ODD 3 + Signal 19 RXE0- LVDS EVEN 0 - Signal 20 RXE0+ LVDS EVEN 0 + Signal 21 RXE1- LVDS EVEN 1 - Signal 22 RXE1+ LVDS EVEN 1 + Signal 23 RXE2- LVDS EVEN 2 - Signal 24 RXE2+ LVDS EVEN 2 + Signal 25 GND 26 GND

Ground