Haier ns l19w2q 10a schematic

Model No.
NS-L19W2Q-10A

CHASSIS:

ZORAN775

WARNING

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.

2009 (Qingdao Electronics
All rights reserved. Unauthorized copying and distribution is a violation of
law.

limited company

)

1

CONTENTS

Table of contents………………..................………………….……….2

1. General Information

1.1 General Guidelines................................................................................4

1.2 Important notice…………………………………………………………..…4

1.3 How to read this Service Mauna…………………………………………..5

…………...............…………………………..4

2. SPECIFICATIONS………………………………………………….…...7

3. LOCATION OF CONTROLS AND COMPONENTS…..…..8

3.1Board Location……………………………….. ………….……………..…..8

3.2 A Board----Main Board………………………………...…………...……....8

3.3 B Board----Power Board……………………………..………….... ……..12

3.4 LCD Panel……………………………….. ………..………………………12

4. Disassemble and assemble…...………..…………………….....15

4.1 Remove the Pedestal…..……………………….….………………….….15

4.2 Remove the Front Cover….……………………………...……….………15

4.3 Remove the LCD panel……………………………………………………17

4.4 Remove the Main Board…………………………………………..………17

4.5 Remove the Power Board.………...…………………..………….………18

4.6 Remove the Speaker….…………………………...………….……….….18

4.7 Remove the Keypad Assembly…………………….…….…………....…19

4.8 Remove the Remote Control Board…………………………...…………19

5. INSTALLATION INSTRUCTIONS…………………………...….20

6. OPERATION INSTRUCTIONS……………………………….…..23

6.1 Front Panel Controls…………………………………………..................23

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

6.3 Setting up Your Remote Control…………………………………..……..25

2

7. MEASUREMENTS AND ADJUSTMENTS…………………..26

8. Electrical parts……………………………...…………………………..31

8.1 Wiring Connection Diagram…………………..……………………..……31

8.2 Block Diagram…….………………………………..……….…………......32

8.3 Circuit Diagram……………………………….........................................32

9. Trouble Shooting Guide …………………………………………..49

3

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.

4

1.2.6 Take Care to Deal With The Cathode-Ray Tube

In the condition that an explosion-proof cathoderay tube is set in this equipment, safety is se-cured

against implosion. However, when removing it or serving from backward, it is dangerous to give a

shock. Take enough care to deal with it.

1.2.7 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

1.2.8 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.

1.2.9 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

1.3.1 Using Icons

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

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,

5

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:

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.

6

2. Specification

Screen Size 18.5"

Display Type LCD

Panel 60 Hz vs.120 Hz 60Hz

Display Resolution 720P

Panel Resolution (Min.) 1366(H)x768(V)

Aspect Ratio 16:9

Contrast Ratio (Typ.) - panel 1000:1

Brightness (Center Typ.) cd/m2 300

Panel Native Color Temperature 6500

Uniformity (9-point Min.) 0.75(9point)

Response Time - Fact Tag 5ms

Panel Bit Depth (6 bit with FRC or 8 bit) 6bit

Lamp Life (Typ. Hours) 50000

Horizontal Viewing Angle (At CR>10) 170

Vertical Viewing Angle (AT CR>10) 160

ATSC Tuner with Clear QAM Yes

NTSC Tuner (air & cable) Yes

Zoom/Display Formats (Min.) Yes (3)

Comb Filter 3d y/c digital

3-2 Pull down Yes

USB Port for thumb drive (side) - Supports F/W Upgrade,

MP3, JPEG USB(for firmware update)

Closed Captioning Display Yes

V-Chip (Version 2.0) Yes

Sleep Timer Yes

Channel Labeling Yes

Auto Zoom Yes

Composite Inputs (back) Yes (1) (SIDE BACK)

S-Video Inputs (back) Yes (1) (SIDE BACK)

Component Video Inputs (back) Yes (1) (SIDE BACK)

HDMI Input - HDMI 1.3 (back) Yes (2) (SIDE BACK)

PC Input - VGA (back) Yes (1) (SIDE BACK)

Shared Audio Inputs Yes(COMPOSITE & S-VIDEO)

RF Input (back) Yes (1) (SIDE BACK)

Audio Outputs (back) Yes (1) (SIDE BACK)

Watts/Channel (Min at 10% THD) 3W x 2

Sound Leveler Yes

Power Light On-blue; Off-red

Power: AC 240volt/60Hz Power: AC 120volt/60Hz

Energy Star 3.0 Yes

CA ROHS Yes

Simplay HD Yes

OSD Languages Eng/Fre/Spa

7

3. LOCATION OF CONTROLS AND COMPONENTS

3.1 Board Location

A Board

B Board

C

No. Description

A Board Main Board

B Board Power supply Board

C Speaker

3.2 A Board----Main Board

3.2. 1 Function Description:
Main Board：

8

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

3.2.2 Connector definition

Main board connector

LVDS Connector (CN7)

PIN 1

9

Pin number Signal name Description

1-3 LVDSVDD Power for panel

4-6 GND Ground

7 A0N LVDS EVEN 0 - Signal

8 A0P LVDS EVEN 0 + Signal

9 A1N LVDS EVEN 1 - Signal

10 A1P LVDS EVEN 1 + Signal

11 A2N LVDS EVEN 2 - Signal

12 A2P LVDS EVEN 2 + Signal

13,14 GND Ground

15 CK1N LVDS EVEN Clock - Signal

16 CK1P LVDS EVEN Clock + Signal

17 A3N LVDS EVEN 3 - Signal

18 A3P LVDS EVEN 3 + Signal

19 NC NC

20 NC NC

21 NC NC

22 NC NC

23 NC NC

24 NC NC

25,26 GND Ground

27 NC NC

28 NC NC

29 NC NC

30 NC NC

Power supply and Inverter Connector（CN3）

PIN 1

Pin

number Signal name Description

1 ON/OFF Preparative switch control
2 GND
3 GND

Ground
Ground

4 ADJ INVERTER Lightness Adjust

10

5 BLON INVERTER Switch Control
6 +12V 12V Power
7 +12V 12V Power

Audio Output Connector（CN1）

PIN 1

Pin

number Signal name Description

1 LSPK Left Audio Output
2 GND
3 GND
4 RSPK Right Audio Output

Remote Board and Key board Connector（CN2）

Ground
Ground

Pin

number Signal name Description

1 IR_IN IR
2 CPU5V 5V Power
3 LED_B Blue Indicator light
4 GND
5 LED_R Red Indicator light
6 K6 Key Connector POWER
7 K5 Key Connector MENU
8 K4 Key Connector P-

9 K3 Key Connector P+
10 K2 Key Connector V­11 K1 Key Connector V+
12 K0 Key Connector SOURCE

Ground

PIN 1

11

3.3.B Board------- (Power Board)

Supply power for Main board and Panel

Power supply and Inverter Connector（CN10）

Pin

number Signal name Description

1 NC
2 GND
3 GND
4 BL-ADJUST INVERTER Lightness Adjust
5 BL-ON/OFF INVERTER Switch Control
6 +12V 12V Power
7 +12V 12V Power

Other Connector
AC150V~AC240V Input (CN13)
Power supply for panel (CN11)
Power supply for panel (CN12)

Ground
Ground

3.4. LCD PANEL.

12

Connector definition

13

14

4. Disassemble and assemble

4.1 Remove the Pedestal

4.2 Remove the Front Cover

15

16

4.3 Remove the LCD panel

4.4 Remove the Main Board

17

4.5 Remove the Power Board

Remove the Speaker

4.6

18

4.7

Remove the Keypad Assembly

4.8 Remove the Remote Control Board

19

5. INSTALLATION INSTRUCTIONS

Accessories

Remote Control User Manual Battery YPbPr wire

20

21

22

6. OPERATION INSTRUCTIONS

Basal information

6.1 Front panel controls

23

6.2 Back panel controls

24

6.3 Setting up Your Remote Control

25

7. MEASUREMENTS AND ADJUSTMENTS

7.1 Factory Menu

The way to the factory mode menu:
First: press menu,
Second: choose the AUDIO,
Third: input 8893.

Finished these operations, system will be into the factory mode menu. Press to

select articles, and then press the Right or enter button to sub-menu.

Software Upgrade

Auto Color

26

White Balance/Color Temp

Picture Mode Setting

Audio Mode Setting

SSPLL Setting

27

IF you want to exit this factory menu, please press the button” Exit” in the remoter.

7.2 Picture

28

7.3 Audio

7.4 CHANNELS

29

7.5 SETTINGS

8 Electrical parts

8.1 Wiring Connection Diagram

30

customer type

Haier typ

e

special number

special technique
document number

export country

customer

brand

NS-L19W2Q-10A

LA19T3W

DC13P0E0100

AT08SR0803US01

AMERICA

BBY

INSIGNIA

18.5" LCD

3

PANNE

4

CN1

2
N
C

L

2

9

CNC1

CN2

5

POWER

1

CNE1

8

TUNER

6

7

Quantit

y

10

Remote Control
Board Assembly

11

Keypad Assembly

NO.

Mainboard Assembl

1

LVDS Connection Wire

2

LCD Pannel

3

Connection Wire

4

For 12V

Power Supply Boar

5

6

Connection Wire For

7

Contral Board
Speaker

8

Connection Wire

Speaker

9

Remote Control

10

Board Assembly

11

Keypad Assembly

Workout

NAME

Power Cor

Auditing

y

d

d

Serial NO

DC13P0E0100

009040219

0094001220DA

0090403469C
0094001233A

0090403211A
0090402388
0090402199A
0094001218

0090719244

0090718846

.

8

M

Standard­ization

Spec

Approve

8.2 Block Diagram

customer type

haier type

special number

special technique
document number

export country

customer

brand

4

NS-L19W2Q-10A

LA19T3W

DC13P0E0100

AT08SR0803US01

AMERICA

BBY

INSIGNIA

10

5

7

6

8

9

11

12

3

2

1

21

20

HAIER
User`s Manual

Explain:

13

14

15

19

18

16

17

reference

number

The line bundle 、screw and the damageable element that does not mark in explosion picture please refer to BOM

21

Remote controller
User`s Manual

20

LOGO

19

Speaker

18

Rubber gasket

17

Base Borad

16

Rotate axis

15

name special number

0094013915I
0090507656
0090101487C
0094001218
0090301459

0090203739
0090101794A

standard

number

1

reference
number

14

13
12

11
10

9

8
7
6
5

1

4

1

3

1

2

1

1

5

1

Workout

name

Keypad Assembly

Control Board
Bracket

Back Cover
hanging joining

Power supply
board

Mainboard Assembly

Terminal Board

Terminal Board Label

USB Rubber Piece
LCD panel

Plastic Front Cabinet
Remote Control

Board Assembly
Light Transmission
Pillar

Adorning

Auditing

special number

0090203774

0094001220DA
0090203738
0090719244
0090203553
0090203547B

Standard­ization

standard

number

1
1
1
4
1
1
1
1

1
1

1
1

1
1

Approve

8.3 Circuit Diagram

9. TROUBLE SHOOTING GUIDE

9.1. Simple check

No Picture, no sound

Blank screen

No sound

Poor sound Verify if sound system is correct .Refer to some chapter for adjust.

No picture in some channel

No color for some channel

program(black and white)

Verify if the television is properly plugged

Verify if the television is properly supplied power

Verify if electricity is available

Verify if correct signals are input

Press INPUT button to change signal input to TV input

Restart the television of power supply is interrupted

Press Mute button and verify if Mute mode is set.

Switch to other channel and verify if the same problem happens.

Press VOL+ button to see of he problem can be solved.

Verify if correct channel is selected.

Adjust the antenna.

Make adjustments by Fine Tune and MANUAL Scan.

Verify if the same problem exists in other channels.

check out of picture and sound system.

Refer to relative instructions in the Manual for color adjusts.

Verify if the antennal is correctly connected.

Spots with some or all pictures

Horizontal/vertical bars or picture

shaking

Television out of control

Verify if the antennal is in good condition.

Make fine adjustment of channel.

Check for local interference such as an electrical appliance or

power tool.

Disconnect the television from power supply and 10 seconds

later, connect the television to the power supply. If the problem

still exists, contact authorized after-sales service for technical

assistance.

9.2 Power Supply Board failure check

33

State: No power

First, check cables which connect with PSU, then check as follows

1) Check PSB input voltage（AC input）
voltage : ～120V

Connector: CN13

2）Check PSB output voltage orderly：

Voltage: +12V, +12V

Connector: CN10

9.3 Main board failure check

34

State：No picture

35

9.4 Panel failure

Failure Mode

Part Name Description Phenomena Failure cause

TCP

V B/D Vertical bar

Block Defect :TCP cracking or cracking

Dim or L/D :TCP Sunken

:TCP lead cracking

36

V Dim

Vertal gray

line

V L/D

Vertical color

line(light or

dark forever)

:ACF bonding short

:Awful environment and something electric enter into

LCD

:Mis-align between TCP and Panel

:Panel failure

:TCP failure

H B/D

H Dim

H L/D

Horizontal

bar

Horizontal

gary line

Horizontal

line(light or

dark forever)

Failure Mode

Part Name Description Phenomena Failure cause

Bright dot dark

dot in panel

Bladder in

Polarizer

Polarizer Scratch

Incoming Inspection Standard

Bladder between Polarizer and top glass

Tine or rigidity arose

Panel or

Polarizer

Dot Defect

Polarizer

Bubble

Polarizer

Scratch

F/M inside

Polarizer

Abnormal

Display

Circuit

Flashing

Failure Mode

Eye winker inside

Polarizer

Eye winker inside Polarizer

Abnormal Display

1. Chip lose action

2. IC ahort or jointiog bad

Bright and dark

display alternately

3. Pannel and vsc connect bad

37

Part Name Description Phenomena Failure cause

Circuit

White

Screen

Black

Screen

FIIcker Crosstalk

Abnormal

Color

Abnormal

Color

B/L normal, only

white screen

display

B/L normal, only

Black screen

display

Only color

abormal

Only color

abnormal

Maybe caused by surge current and EDS

LCD Vcom imbalance

Capacitance improper bring crosstalk inside LCD

panel

1. Chip lose action

2. IC short or jointion bad

3. Pannel and vsc connect bad

Failure Mode

Part Name Description Phenomena Failure cause

Mechanlcal

Nolse

Ripple Connectric circle

B/L off B/L lose action

B/L dark

B/L wire

damaged

When turn

panel,appear

cacophony

B/L brightness

darker than normal

B/L wire damaged Operation abnormal or systemic noise

Caused by Mechanica noise of backlight

unit

Causeed by between mechanism and

pannel

*Connect badness between wire and

electrode

*Connect badness

Short between wire and electrode

B/L wire

open

B/L shut

down

Without backlight Operation abnormal or systemic noise

B/L shutdown in

sometime

38

Short bitween lamp housing and wire, Because

consume power too much

F/M in

F/M

B/L ,white,balck

Rotundity or

wirelike

F/M in B/L unit

Failure Mode

Part Name Description Phenomena Failure cause

Brightness at

Light

leakage

bottom of LCM

brighter than

normal

B/L unit badness

Mechanlcal

or B/L

Uniformity

Mount hole

B/L brightness

asymmetric

Lack screw or

screw damage

Sheet in B/L unit is uneven

*Lack screw

Screw damage

39

40