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Haier L26K3 Service Manual

Mst6m69fl chassis
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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 by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair
the product or products dealt with in this service information by anyone else could result in serious injury or death.
SERVICE MANUAL
Model No.
WARNING
©2009 Qingdao Haier Electronics Co., Ltd.
All rights reserved. Unauthorized copying and distribution is a violation of law.
Haier Group
Order No.
L26K3,L32K3,L42K3
MST6M69FL
TV0912S010V0
LCD TV
Classis

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Summary of Contents for Haier L26K3

  • Page 1 Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death. ©2009 Qingdao Haier Electronics Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    1-4-1. Using icons: ................... 6 Chapter 2. Specifi cation 2-1. Specifi cation list ..................8 2-2. External pictures (four faces) ..............11 ..Chapter 3. Disassemble and Assemble 3-1.L26K3 ......................17 3-2.L32K3 ......................19 3-3.L42K3 ......................21 Chapter 4. Location of Controls and Components 4-1. Board Location ..................23...
  • Page 3 Service Manual Model No.: 4-4. LCD Panel ....................31 4-4-1. Function Description: Display the signal..........31 4-4-2. Connector defi nition: ................31 Chapter 5. Installation Instructions 5-1. Accessories ....................33 5-2.External Equipment Connections .............33 Chapter 6. Operation Instructions 6-1. Front Panel Controls ................38 6-2.

  • Page 4: Chapter 1.General Information

    Service Manual Model No.: Chapter 1.General Information 1-1. Document Information Document format: Adobe PDF Author: Compiler: 1-2. 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: About Lead Free Solder (Pbf)

    Service Manual Model No.: Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. The following techniques should be used to help reduce the incidence of component damage caused by electros static discharge (ESD).
  • Page 6 Service Manual Model No.: 1. Always unplug the receiver AC power cord from the AC power source before: a. Removing or reinstalling any component, circuit board module or any other receiver assembly. b. Disconnecting or reconnecting any receiver electrical plug or other electrical connection. c.

  • Page 7: Ordering Spare Parts

    Service Manual Model No.: 12. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 13. Use only an anti-static type solder removal device. Some solder removal devices not classifi ed as "anti-static" can generate electrical charges suffi cient to damage ES devices. 14.

  • Page 8: Using Icons

    Service Manual Model No.: 1-4. 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 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.

  • Page 9: Chapter 2. Specifi Cation

    Service Manual Model No.: Chapter 2. Specifi cation 2-1. Specifi cation list...
  • Page 10 Service Manual Model No.:...
  • Page 11 Service Manual Model No.:...

  • Page 12: External Pictures (Four Faces)

    Service Manual Model No.: 2-2. External pictures (four faces) 2-2-1 L26K3 Front Side Left Side...
  • Page 13 Service Manual Model No.: Right Side Back Side...
  • Page 14 Service Manual Model No.: 2-2-2 L32K3 Front Side Left Side...
  • Page 15 Service Manual Model No.: Right Side Back Side...
  • Page 16 Service Manual Model No.: 2-2-3 L42K3 Front Side Left Side...
  • Page 17 Service Manual Model No.: Right Side Back Side...

  • Page 18: Chapter 3. Disassemble And Assemble

    Service Manual Model No.: Chapter 3. Disassemble and Assemble 3-1. L26K3 3-1-2. Remove the Back Cover 3-1-1. Remove the Stand 1. Remove the thirteen screws indicated 1. Lay down the unit so that back cover faces upward 12 Screws(ST4*12) 2 Screws(ST3*10) 3-1-3.
  • Page 19 Service Manual Model No.: 3-1-4. Remove the Speaker 3-1-6. Remove the Keypad Assembly and Remote Control Board Assembly 1 Screws(ST3*10) 2 Screws(ST3*10) 3-1-5. Remove the screws fastened the panel Remove the two screws indicated by the blue lines in below picture. 2 Screws(ST4*8)

  • Page 20: 3-2.L32K3

    Service Manual Model No.: 3-2. L32K3 3-2-3. Remove the power supply 3-2-1. Remove the Stand 1. Lay down the unit so that back cover faces 4 Screws(M3*8) upward 4 Screws(M4*12) Bottom 2. Remove the six screws indicated with the blue lines in the picture above. 3-2-4.
  • Page 21 Service Manual Model No.: 3-2-6. Remove the Lcd panel 3-2-7. Remove the key board off the front frame and remote board 6 Screws(ST4*12) Remove the twelve screws indicated by the blue lines in below picture. 3 Screws(ST3*10) 3-2-8. Remove the Speaker...

  • Page 22: 3-3.L42K3

    Service Manual Model No.: 3-3. L42K3 3-3-1. Remove the Stand 3-3-4. Remove the connecting metal 1. Lay down the unit so that back cover faces board of base upward 4 Screws(M4*16) 5 Screws(M4*8) 2. Remove the four screws indicated with 2 Screws(ST4*12) the blue lines in the picture above.
  • Page 23 Service Manual Model No.: 3-3-11. Remove the metal slice 3-3-8. Remove the mainboard mainboard 4 Screws(M3*8) 4 Screws(M3*8) 3-3-9. Remove the metal slice power 4 Screws(M3*8) 1 Screw(M4X8) 14 Screws(SJ4X12F) 3-3-10. Remove the metal connecting piece of wall hanging 4 Screws(M4*8)

  • Page 24: Chapter 4. Location Of Controls And Components

    Service Manual Model No.: Chapter 4. Location of Controls and Components 4-1. Board Location 4-1-1.L26K3 Parts number Description A Board DC1710E0100M Main Board(0090720080F) B Board 0094001283A Power Supply C Board 0094001257MA LCD Panel 4-1-2.L32K3 Parts number Description A Board 0094001264DA...

  • Page 25: Main Board

    Service Manual Model No.: 4-1-3.L42K3 Parts number Description A Board DC18K0E0300M Main Board(0090720080K) B Board 0094001176B Power Supply C Board 0094001165BC LCD Panel 4-2.Mainboard 4-2-1. Function Description: Process signal which incept from exterior equipment then translate into signal that panel can display. 4-2-2.Connector definition 4-2-2-1.Mainboard of LB26R3,LB32R3,LB42R3,LB46R3 CNA1...
  • Page 26 Service Manual Model No.: 4-2-2-2.Connector definition Power connectors (CNA1) Description Pin number Signal name PW-ON/OFF ON/OFF 5V-Stand 12VA 12V-Mainboard 12VA 12V-Mainboard Power of audio anplifier connector (CNA2) Pin number Signal name Description Left of audio Right of audio Key connector (CNE2) Pin number Description Signal name...
  • Page 27 Service Manual Model No.: Power of audio anplifier connector (CNA2) Pin number Description Signal name Sensitization connector (CNE3) Pin number Description Signal name 3.3V 3.3V Clock of Sensitization Data of Sensitization Data of DSMB Connector (CNF4) Pin number Pin number Description Description Signal name...
  • Page 28 Service Manual Model No.: Remote connector (CNE1) Pin number Description Signal name IRIN IR IN LEDR LED-RED LEDB LED-BLUE Power of DSMB connector (CNB3) Pin number Description Signal name 12V for DSMB 12V for DSMB 12V for DSMB LVDS Connector (CON30) Pin number Pin number Signal name...

  • Page 29: Connector Defi Nition

    Service Manual Model No.: 4-3. Power Supply Board 4-3-1. Function description: To supply power for Mainboard, Panel. 4-3-2. Connector defi nition: 4-3-2-1.LB26R3 Signal name Pin number Pin number Signal name Pin number Signal name E_PWM BLON I_PWM +12VD PWR_ON +12VD Pin number Signal name +24VD...
  • Page 30 Service Manual Model No.: 4-3-2-2.LB32R3 CON5 PIN NUMBER DESIGNATION +5VSB CON2 PIN NUMBER DESIGNATION CON4 PIN NUMBER DESIGNATION CON3 PIN NUMBER DESIGNATION ON/OFF...
  • Page 31 Service Manual Model No.: 4-3-2-3.LB42R3 CN2&CN3 Pin number Signal name Pin number Signal name Pin number Signal name Pin number Signal name ON/OFF Signal name Pin number Signal name Pin number...

  • Page 32: Lcd Panel

    Service Manual Model No.: 4-4.LCD Panel 4-4-1. Function Description: Display the signal. 4-4-2. Connector defi nition 4-4-2-1.L26K3 IVOM260TWR1 Not connected Ground Not connected RX3- Negative LVDS differential data input RX3+ Positive LVDS differential data input Not connected Ground Ground RX0-...
  • Page 33 Service Manual Model No.: 4-4-2-3.L42K3 LG LC420WUN_SBD2 LVDS: Symbol Description Symbol Description ‘H’ or NC= 10bit(D) , ‘L’ = 8bit Ground Bit Select No Connection R2AN SECOND LVDS Receiver Signal (A-) No Connection R2AP SECOND LVDS Receiver Signal (A+) No Connection R2BN SECOND LVDS Receiver Signal (B-) No Connection...

  • Page 34: Chapter 5. Installation Instructions

    Service Manual Model No.: Chapter 5. Installation Instructions 5-1.Accessories SOURCE H.LOCK STILL pqrs wxyz MUTE Q.VIEW S.MODE P.MODE TV.MENU D.MENU EXIT BACK PLAY/PAUSE ZOOM D.CALL TIME SHIFT TV.CALL AUDIO GUIDE PAGE+ TV/FM INFO CH.LIST PAGE- SHOCK INTERACTION SLEEP GAME BUSINESS User's Guide Batteries Remote Control...
  • Page 35 Service Manual Model No.: ANT. COMPONENT IN AUDIO VIDEO VGA/DVI AUDIO VGA IN AUDIO S-VIDEO VIDEO AUDIO VIDEO...
  • Page 36 Service Manual Model No.: HDMI3 CONMPENT AUDIO VIDEO VGA IN VGA/DVI AUDIO VGA IN • • • • •• • •••• •• •••• SOURCE...
  • Page 37 Service Manual Model No.: HDMI3 CONMPENT AUDIO VIDEO VGA IN VGA IN VGA/DVI AUDIO...
  • Page 38 Service Manual Model No.:...

  • Page 39: Chapter 6. Operation Instructions

    Service Manual Model No.: Chapter 6. Operation Instructions 6-1. Front Panel Controls Panel Control 26”/32”/42” S-VIDEO jack 6-2. Back Panel Controls 26”/32”/42” ANT. HDMI3 CONMPENT AUDIO VIDEO VGA IN VGA/DVI AUDIO VGA IN 1.COMPONENT In Connect a component Video/Audio device to these jacks 2.VGA/DVI AUDIO Connect a VGA/DVI Audio device to these jacks 3.VGA IN: Connect the monitor output connector from a PC to the jack 4.AV1 In Connect Video/Audioout from an Video/Audio device to these jacks...

  • Page 40: Setting Up Your Remote Control

    Service Manual Model No.: 6-3. Setting Up Your Remote Control 1.POWER: Press this key to start TV from standby mode, press it again to return to standby mode. 2.USB: Press this key for quick switching of streaming media. 3.H. LOCK: Refer to the Functional Description on Page 23. 4.Press this key to open/close signal source options menu.

  • Page 41: Chapter 7. Electrical Parts

    Service Manual Model No.: Chapter 7. Electrical Parts 7-1. Block Diagram Card Reader PW-ONOFF/ 12V.5V Back Light 3.3V 3.3V 2.5V 2.5V Power 1.2V 1.2V 24C64 Audio 3.3v Audio Out E2PROM Amplifier LVDS 3.3V Q52.Q53 FLASH 9435A 2.5v W9425G6EH-4 3.3V 2.5V 1.2V W9425G6EH-4 D6216N...

  • Page 42: Circuit Diagram

    Service Manual Model No.: 7-2. Circuit Diagram...
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  • Page 52 Service Manual Model No.: 0.1u 0.1u C131 C131 R1814.7K R1814.7K R184 NC R184 NC HOTPLUG3 RX2B2P RX2B2N RX2B1P RX2B1N RX2B0P RX2B0N RX2BCLKP RX2BCLKN DDC2BSCL DDC2BSDA HOTPLUG2...
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  • Page 54: Wiring Connection Diagram

    Service Manual Model No.: 7-3. Wiring Connection Diagram 7-3-1.L26K3 Name Parts number 0090402750 Connection Wire(For Keyboard) Connection Wire(Control of Sensitization ) 0090401850A Connection Wire(For Remote) 0090401643D Connection Wire(For Speaker) 0090400647C 0090402496 LVDS Wire 0090403399B Connection Wire(Power For Audio Amplifier) 0090402469...
  • Page 55 Service Manual Model No.: 7-3-2.L32K3 Name Parts number 0090401030B LVDS Wire Connection Wire(Power For Mainboard) 0090401787A Connection Wire(For Speaker) 0090400647C Connection Wire(Control of Sensitization ) 0090401850A Connection Wire(For Keyboard) 0090402750 Connection Wire(For Remote) 0090401643C Connection Wire(Power For Audio Amplifier) 0090403399 Connection Wire(Power For backlight ) 0090401788C...
  • Page 56 Service Manual Model No.: 7-3-3.LB42R3 Name Parts number Connection Wire(Control of Sensitization ) 0090401850B 0090402750A Connection Wire(For Keyboard) Connection Wire(For Remote) 0090401643E Connection Wire(For Speaker) 0090401752 0090402724A LVDS Wire 0090403469D Connection Wire(Power For Mainboard) Connection Wire(Power For Audio Amplifier) 0090403399B Connection Wire(For Back Light) 0090402054...

  • Page 57: Chapter 8. Measurements And Adjustments

    Service Manual Model No.: Chapter 8. Measurements and Adjustments 8-1. Service Mode 8-1-1.How to enter into Service Mode The way to the factory mode menu: Step 1: Press Menu, Step 2: Input 8893, Step 3: Press “OK” System will be into the factory mode menu when 3 steps above are done. 8-1-2.How to exit If you want to exit this factory menu, please press the button ”Exit”...

  • Page 58: Video

    Service Manual Model No.: 8-2-2. Video 8-2-3. Audio 8-2-4.Channel...

  • Page 59: Funtion

    Service Manual Model No.: 8-2-5.Function 8-2-6.Adjust 8-2-7.Timer...

  • Page 60: Chapter 9. Trouble Shooting

    Service Manual Model No.: Chapter 9. Trouble shooting 9-1. Simple check Verify if the television is properly plugged Verify if the television is properly supplied power No picture/ No sound 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...

  • Page 61: Mainboard Failure Check

    Service Manual Model No.: 9-2. Mainboard Failure Check Symptom: No Sound No Sound (All Mode) Fail Check the input Change Source input Source Pass Fail Check Re-soldering or change input/output IC U13 Pass Fail Check Re-soldering or change input/output IC U55 Pass Fail Check...

  • Page 62: Pannel Failure

    Service Manual Model No.: 9-3. Pannel Failure Failure Mode...
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  • Page 67 Sincere Forever Haier Group Haier Industrial Park, No.1, Haier Road 266101, Qingdao, China http://www.haier.com Printed in China...

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L32k3L42k3

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