Haier NS-L19W2Q-10A Service Manual
  1. Manuals
  2. Brands
  3. Haier Manuals
  4. TV
  5. NS-L19W2Q-10A
  6. Service manual
Haier NS-L19W2Q-10A Service Manual

Haier NS-L19W2Q-10A Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
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.
Model No.
NS-L19W2Q-10A
CHASSIS:
WARNING
2009 (Qingdao Electronics
All rights reserved. Unauthorized copying and distribution is a violation of
law.
1
COLOR TV
ZORAN775
limited company
)

Advertisement

Table of Contents
loading

Related Manuals for Haier NS-L19W2Q-10A

Summary of Contents for Haier NS-L19W2Q-10A

  • Page 1 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.

  • Page 2: Table Of Contents

    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………………………………..
  • Page 3 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...

  • Page 4: General Information

    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.

  • Page 5: How To Read This Service Manual

    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.
  • Page 6 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.

  • Page 7: Specifications

    2. Specification Screen Size 18.5" Display Type 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 Panel Native Color Temperature 6500 Uniformity (9-point Min.) 0.75(9point) Response Time - Fact Tag Panel Bit Depth (6 bit with FRC or 8 bit)

  • Page 8: Location Of Controls And Components

    3. LOCATION OF CONTROLS AND COMPONENTS 3.1 Board Location A Board B Board Description A Board Main Board B Board Power supply Board Speaker 3.2 A Board----Main Board 3.2. 1 Function Description: Main Board：...
  • Page 9 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...
  • Page 10 Pin number Signal name Description LVDSVDD Power for panel Ground LVDS EVEN 0 - Signal LVDS EVEN 0 + Signal LVDS EVEN 1 - Signal LVDS EVEN 1 + Signal LVDS EVEN 2 - Signal LVDS EVEN 2 + Signal 13,14 Ground CK1N...
  • Page 11 BLON INVERTER Switch Control +12V Power +12V Power Audio Output Connector（CN1） PIN 1 number Signal name Description LSPK Left Audio Output Ground Ground RSPK Right Audio Output Remote Board and Key board Connector（CN2） PIN 1 number Signal name Description IR_IN CPU5V Power LED_B...

  • Page 12: B Board

    3.3.B Board------- (Power Board) Supply power for Main board and Panel Power supply and Inverter Connector（CN10） number Signal name Description Ground Ground BL-ADJUST INVERTER Lightness Adjust BL-ON/OFF INVERTER Switch Control +12V Power +12V Power Other Connector AC150V~AC240V Input (CN13) Power supply for panel (CN11) Power supply for panel (CN12) 3.4.
  • Page 13 Connector definition...

  • Page 15: Disassemble And Assemble

    4. Disassemble and assemble Remove the Pedestal Remove the Front Cover...

  • Page 17: Remove The Lcd Panel

    Remove the LCD panel Remove the Main Board...

  • Page 18: Remove The Power Board

    Remove the Power Board Remove the Speaker...

  • Page 19: Remove The Keypad Assembly

    Remove the Keypad Assembly Remove the Remote Control Board...

  • Page 20: Installation Instructions

    5. INSTALLATION INSTRUCTIONS Accessories Remote Control User Manual Battery YPbPr wire...

  • Page 23: Operation Instructions

    6. OPERATION INSTRUCTIONS Basal information 6.1 Front panel controls...

  • Page 24: Back Panel Controls

    6.2 Back panel controls...

  • Page 25: Setting Up Your Remote Control

    6.3 Setting up Your Remote Control...

  • Page 26: Measurements And Adjustments

    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 select articles, and then press the Right or enter button to sub-menu. Software Upgrade Auto Color...
  • Page 27 White Balance/Color Temp Picture Mode Setting Audio Mode Setting SSPLL Setting...
  • Page 28 IF you want to exit this factory menu, please press the button” Exit” in the remoter. 7.2 Picture...
  • Page 29 7.3 Audio 7.4 CHANNELS...

  • Page 30: Electrical Parts

    7.5 SETTINGS 8 Electrical parts 8.1 Wiring Connection Diagram...
  • Page 31 NS-L19W2Q-10A customer type H a i e r t y p e LA19T3W special number DC13P0E0100 special technique AT08SR0803US01 document number export country AMERICA customer brand INSIGNIA 1 8 . 5 " L C D P A N N E L...

  • Page 32: Block Diagram

    8.2 Block Diagram customer type NS-L19W2Q-10A haier type LA19T3W special number DC13P0E0100 special technique AT08SR0803US01 document number export country AMERICA customer INSIGNIA brand Explain: The line bundle 、 screw and the damageable element that does not mark in explosion picture please refer to BOM...

  • Page 50: Trouble Shooting Guide

    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.

  • Page 51: Main Board Failure Check

    : No power State 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...
  • Page 52 State：No picture...

  • Page 53: Panel Failure

    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 lead cracking...
  • Page 54 :ACF bonding short Vertal gray V Dim :Awful environment and something electric enter into line :Mis-align between TCP and Panel Vertical color :Panel failure V L/D line(light :TCP failure dark forever) Horizontal H B/D Horizontal H Dim gary line Horizontal H L/D line(light dark forever)
  • Page 55 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 LCD Vcom imbalance FIIcker Crosstalk Abnormal Only color Capacitance improper bring crosstalk inside LCD Color abormal panel...
  • Page 56 ,white,balck F/M in B/L unit Rotundity wirelike Failure Mode Part Name Description Phenomena Failure cause Brightness Light bottom of LCM B/L unit badness leakage brighter than normal Mechanlcal B/L brightness Uniformity Sheet in B/L unit is uneven or B/L asymmetric Lack screw or *Lack screw Mount hole...

Table of Contents