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HAIER NS-L19W2Q-10A


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                                                                                         COLOR TV

                                                                   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 limited    company)
                                                             All rights reserved. Unauthorized copying and distribution is a violation of
                                                            law.




                                                                     1
CONTENTS
Table of contents....................................................................2
1. General Information...........................................................4
  1.1 General Guidelines................................................................................4
  1.2 Important notice.......................................................................4
  1.3 How to read this Service Mauna..................................................5
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

                                             Ground
                                             Ground



                                     10
                                               Power
                                               Power



Audio Output Connector   CN1



                         PIN 1

   Pin
 number   Signal name                      Description
                                             Audio Output
                                             Ground
                                             Ground
                                              Audio Output


                          Connector




                                                             PIN 1


   Pin
 number     Signal name                      Description

                                                 Power


                                                Ground


                                           Key Connector
                                           Key Connector
                                           Key Connector
                                           Key Connector
                                           Key Connector
                                           Key Connector
                                           Key Connector



                                      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

                                             Ground
                                             Ground




                                               Power
                                               Power


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



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




4.6 Remove the Speaker




                         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 NS-L19W2Q-10A
                        LA19T3W
special number        DC13P0E0100
 special technique
 document number
                     AT08SR0803US01
export country         AMERICA
  customer                BBY
    brand              INSIGNIA




                                             CNC1




                                      CNE1




                                                    Workout   Auditing   Standard-
                                                                         ization     Approve
   8.2 Block Diagram

         customer type NS-L19W2Q-10A
           haier type          LA19T3W
         special number DC13P0E0100
          special technique
          document number   AT08SR0803US01
         export country AMERICA
           customer              BBY
             brand            INSIGNIA

                                                                     5   6   7   8   9        10    11                   12




                     4




                     3

                     2




                 1




                                                                                                                   Explain: The line bundle  screw and the damageable element that does not mark in explosion picture please refer to BOM
                                                                                                              13    reference            name        special number   standard   number
                                                                                                                                                                                            reference          name              special number          standard         number
                                                                                                         14          number                                                                  number

                                                                                               15                                                                                                       Keypad Assembly                                                     1
                                                                                                                                                                                               14
                                                                                                                                                                                                        Control Board
                                                                                                                                                                                               13       Bracket
                                                                                                                                                                                                                                                                            1

                                                                                                                                                                                                12      Back Cover                                                          1

                                                                                                                                                                                               11       hanging joining                                                     4
                         21      20                        19   18
                                                                                                                                                                                                        Power supply
                                                                                                                                                                                                10      board                                                               1
                                                                                          16
                                                                                                                                                                                                        Mainboard Assembly                                                  1
                                                                                                                                                                                                9

                                                                                                                                                                                                8       Terminal Board                                                      1
                                      HA IE R
                                      Us er `s M an ua l                                                                                                                                                Terminal Board Label                                                1
                                                                                                                                                                                                7
                                                                                                                                                                                                        USB Rubber Piece        0090203774                                  1
                                                                                         17                                                                                                     6
                                                                                                                        21      Remote controller 0094013915I                       1           5       LCD panel               0094001220DA                                1

                                                                                                                                User`s Manual      0090507656                                           Plastic Front Cabinet   0090203738
                                                                                                                        20                                                          1           4                                                                           1
                                                                                                                                                                                                        Remote Control
                                                                                                                        19        LOGO             0090101487C                      1           3       Board Assembly
                                                                                                                                                                                                                                0090719244                                  1
                                                                                                                                                                                                        Light Transmission
                                                                                                                                Speaker            0094001218                                   2                               0090203553                                  1
                                                                                                                        18                                                          1                   Pillar

                                                                                                                                Rubber gasket      0090301459                                  1        Adorning                0090203547B                                 1
                                                                                                                        17                                                          5

                                                                                                                         16     Base Borad         0090203739
                                                                                                                                                                                   1                                                         Standard-
                                                                                                                                                                                          Workout                  Auditing                  ization            Approve
                                                                                                                                 Rotate axis       0090101794A                     1
                                                                                                                        15


8.3 Circuit Diagram
9. TROUBLE SHOOTING GUIDE
9.1. Simple check

                                      Verify if the television is properly plugged
No Picture, no sound                  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
Blank screen
                                      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.
No sound
                                      Press VOL+ button to see of he problem can be solved.


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


                                      Verify if correct channel is selected.
                                      Adjust the antenna.
No picture in some channel
                                      Make adjustments by Fine Tune and MANUAL Scan.

                                      Verify if the same problem exists in other channels.
No color for some channel             check out of picture and sound system.
program(black and white)              Refer to relative instructions in the Manual for color adjusts.

                                      Verify if the antennal is correctly connected.
Spots with some or all pictures       Verify if the antennal is in good condition.
                                      Make fine adjustment of channel.

Horizontal/vertical bars or picture   Check for local interference such as an electrical appliance or
shaking                               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
Television out of control
                                      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

                                           Block Defect :TCP cracking or cracking
        V B/D   Vertical bar               Dim or L/D   :TCP Sunken
TCP                                                     :TCP lead cracking


                                               36
                                                                   :ACF bonding short
                    Vertal       gray
          V Dim                                                    :Awful environment and something electric enter into
                    line
                                                                       LCD

                    Vertical color                                 :Mis-align between TCP and Panel

          V L/D     line(light     or                              :Panel failure

                    dark forever)                                  :TCP failure


                    Horizontal
          H B/D
                    bar


                    Horizontal
          H Dim
                    gary line


                    Horizontal
          H L/D     line(light     or
                    dark forever)


Failure Mode
  Part            Name                  Description        Phenomena                          Failure cause


                                  Bright    dot   dark
              Dot Defect                                                     Incoming Inspection Standard
                                  dot in panel



Panel or
              Polarizer           Bladder             in
Polarizer                                                                    Bladder between Polarizer and top glass
              Bubble              Polarizer




              Polarizer
                                  Polarizer Scratch                          Tine or rigidity arose
              Scratch




              F/M     inside      Eye winker inside
                                                                             Eye winker inside Polarizer
              Polarizer           Polarizer


              Abnormal
                                  Abnormal Display                           1.Chip lose action
              Display
                                                                             2.IC ahort or jointiog bad
Circuit
                                  Bright and dark                            3.Pannel and vsc connect bad
              Flashing
                                  display alternately




Failure Mode

                                                             37
  Part       Name                Description        Phenomena                   Failure cause


                            B/L normal, only
          White
                            white        screen
          Screen
                            display

                                                                Maybe caused by surge current and EDS
                            B/L normal, only
          Black
                            Black        screen
          Screen
                            display



Circuit
          FIIcker           Crosstalk                           LCD Vcom imbalance




          Abnormal          Only           color                Capacitance improper bring crosstalk inside LCD
          Color             abormal                             panel


                                                                1.Chip lose action
                            Only           color
          Abnormal                                              2. IC short or jointion bad
                            abnormal
          Color                                                 3.Pannel and vsc connect bad

Failure Mode
  Part      Name                 Description        Phenomena                   Failure cause

                           When              turn
          Mechanlcal                                            Caused by Mechanica noise of backlight
                           panel,appear
          Nolse                                                 unit
                           cacophony


                                                                Causeed by between mechanism and
          Ripple           Connectric circle
                                                                pannel


                                                                *Connect badness between wire and
          B/L off          B/L lose action
                                                                electrode


                           B/L        brightness                *Connect badness
          B/L dark
                           darker than normal                   Short between wire and electrode


          B/L       wire
                           B/L wire damaged                     Operation abnormal or systemic noise
          damaged

          B/L       wire
                           Without backlight                    Operation abnormal or systemic noise
          open
          B/L       shut   B/L shutdown        in               Short bitween lamp housing and wire, Because
          down             sometime                             consume power too much



                                                      38
                       F/M                  in
                       B/L        ,white,balck
          F/M                                                F/M in B/L unit
                       Rotundity           or
                       wirelike


Failure Mode
   Part         Name           Description       Phenomena                 Failure cause

                             Brightness at
             Light           bottom of LCM
                                                                B/L unit badness
             leakage         brighter than
                             normal


Mechanlcal
                             B/L brightness
or B/L       Uniformity                                         Sheet in B/L unit is uneven
                             asymmetric




                             Lack screw or                      *Lack screw
             Mount hole
                             screw damage                       Screw damage




                                                 39
40



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