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Haier DX-LDVD22-10A Service Manual

Chassis: zoran775
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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.
DX-LDVD22-10A
CHASSIS:
WARNING
2009 (Qingdao Electronics
All rights reserved. Unauthorized copying and distribution is a violation of
law.
1
COLOR TV
ZORAN775
limited company
)

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Summary of Contents for Haier DX-LDVD22-10A

  • Page 1 COLOR TV Model No. DX-LDVD22-10A 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 …..…..9 3.1Board Location……………………………….. ………….……………..…..9 3.2 A Board----Main Board……….………………………..…………...……..9 3.3 B Board------- (Power Board)………………………..…………..……..14 3.4 LCD Panel………………………………..
  • Page 3 5. INSTALLATION INSTRUCTIONS …………………………...….24 6. OPERATION INSTRUCTIONS ……………………………….…..27 6.1 Front Panel Controls…………………………………………....27 6.2 Back Panel Controls………………………………………….………..28 6.3 Setting up Your Remote Control…………..……………………………..29 7. MEASUREMENTS AND ADJUSTMENTS …………………..30 8. Electrical parts ……………………………...…………………………..35 8.1 Wiring Connection Diagram…………………..……………………..……35 8.2 Block Diagram…….………………………………..……….…………..36 8.3 Circuit Diagram……………………………….........36 9.

  • 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 Mauna

    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 21.6" Display Type Panel Technology Panel 60 Hz vs.120 Hz 60Hz Display Resolution 720p Panel Resolution (Min.) 1366(H)x768(V) Backlight Technology (CCFL or LED) CCFL Aspect Ratio 16:9 Contrast Ratio (Typ.) - panel 800:1 Brightness (Center Typ.) cd/m2 Panel Native Color Temperature 6500 Uniformity (9-point Min.)
  • Page 8 Power Light On-Green; Off-red Power: AC 120volt/60Hz DVD Player DVD Video/-R/-RW/+R/+RW/CD-R/-RW/JPEG Photo Optical Disk Playback Support Component - Progressive DVD video interface to TV PC Input Max, Resolution (match panel) 1360*768 OSD Style Simple-standardized OSD Languages (Eng/Fre/Spa/Mand) Eng/Fre/Spa Multi-Lingual Manuals (combined or divided) Combined...

  • Page 9: Location Of Controls And Components

    3. LOCATION OF CONTROLS AND COMPONENTS 3.1. Board Location A Board B Board C DVD 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 10 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 (CN8) PIN 1...
  • Page 11 Pin number Signal name Description LVDS_D0E_N LVDS EVEN 0 - Signal LVDS_D0E_P LVDS EVEN 0 + Signal Ground LVDS_D1E_N LVDS EVEN 1 - Signal LVDS_D1E_P LVDS EVEN 1 + Signal Ground LVDS_D2E_N LVDS EVEN 2 - Signal LVDS_D2E_P LVDS EVEN 2 + Signal Ground LVDS_CE_N LVDS EVEN Clock - Signal...
  • Page 12 number Signal name Description ON/OFF Preparative switch control Ground Ground INVERTER Lightness Adjust 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）...
  • Page 13 Connector V+ Connector SOURCE DVD Power Connector (CN5) PIN 1 number Signal name Description stand by 5V Power Ground Ground 12V Power DVD Video Connector (CN6) PIN 1 number Signal name Description DVD_SW DVD 自动跳转 DVD_PB Pb Signal DVD_Y Y Signal Ground DVD_PR Pr Signal...

  • Page 14: 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 (CN15) Power supply for panel (CN11) Power supply for panel (CN12) Power supply for panel (CN13) Power supply for panel (CN14)
  • Page 15 Connector definition...

  • Page 17: Disassemble And Assemble

    4. Disassemble and assemble Tearing down the base Tearing down the plastic front cabinet Tearing down the panel 4.3.1...

  • Page 18: Tearing Down The Panel Joint Pieces

    Tearing down the panel 4.3.2 Tearing down the panel joint pieces...

  • Page 19: Tearing Down The Main Board

    Tearing down the main board Tearing down the power supply...

  • Page 20: Tearing Down The Dvd

    Tearing down the DVD Tearing down the speaker...

  • Page 21: Tearing Down The Dvd Keypad Assembly

    Tearing down the DVD keypad assembly Tearing down the rotated axis 4.10...

  • Page 22: Tearing Down The Terminal Board

    Tearing down the terminal board 4.11 Tearing down the keypad and remote control board 4.12...

  • Page 24: Installation Instructions

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

  • Page 27: Operation Instructions

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

  • Page 28: Back Panel Controls

    6.2 Back panel controls...

  • Page 29: Setting Up Your Remote Control

    6.3 Setting up Your Remote Control...

  • Page 30: Measurements And Adjustments

    7. MEASUREMENTS AND ADJUSTMENTS 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 White Balance/Color Temp...
  • Page 31 Picture Mode Setting Audio Mode Setting...
  • Page 32 SSPLL Setting IF you want to exit this factory menu, please press the button” Exit” in the remoter. 7.1 Picture...
  • Page 33 7.2 Audio...
  • Page 34 7.3 CHANNELS 7.4 SETTINGS...

  • Page 35: Electrical Parts

    8 Electrical Parts 8.1 Wire Connection Diagram TUNER...

  • Page 36: Block Diagram

    8.2 BLOCK DiAGRAM...

  • Page 37: 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 38 : 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 39 State：No picture...
  • Page 40 9.4 Panel failure Failure Mode...
  • Page 41 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 :ACF bonding short Vertal gray :Awful environment and something electric enter into V Dim line :Mis-align between TCP and Panel Vertical color :Panel failure V L/D...
  • Page 42 Failure Mode 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...
  • Page 43 wire Without backlight Operation abnormal or systemic noise open shut B/L shutdown in Short bitween lamp housing and wire, Because down sometime consume power too much ,white,balck F/M in B/L unit Rotundity wirelike Failure Mode Part Name Description Phenomena Failure cause Brightness Light bottom of LCM...

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