Haier LE40D3281 Service Manual
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Haier LE40D3281 Service Manual

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Haier
SERVICE MANUAL
LED TV
Model No. LE40D3281
MSD3391DS Chassis
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 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.
©2013 Qingdao Haier Electronics Co., Ltd.
All rights reserved. Unauthorized copying and distribution is a violation of law.
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Summary of Contents for Haier LE40D3281

  • 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. ©2013 Qingdao Haier Electronics Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    Service Manual Model No.: LE40D3281 CONTENTS Chapter 1. General Information 1-1. Document Information ..............3 1-2. General Guidelines..............3 1-3. Important Notice.................3 1-3-1. Follow the regulations and warnings ............. 3 1-3-2. Be careful to the electrical shock ............3 1-3-3. Electro static discharge (ESD)..............3 1-3-4.
  • Page 3 Service Manual Model No.: LE40D3281 4-3-2. Connector definition ................15 4-4. LCD Panel ..................16 Chapter 5. Installation Instructions 5-1. Accessories ................18 5-2. External Equipment Connections..........19 Chapter 6. Operation Instructions 6-1. Front Panel Controls..............20 6-2. Back Panel Controls ..............21 6-3. Setting Up Your Remote Control ..........22 Chapter 7.

  • Page 4: Chapter 1. General Information

    Service Manual Model No.: LE40D3281 Chapter 1. General Information 1-1. Document Information Document format: Adobe PDF Author: Gao Bingbing 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.

  • Page 5: About Lead Free Solder (Pbf)

    Service Manual Model No.: LE40D3281 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). Electrostatically Sensitive (ES) Devices Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices.
  • Page 6 Service Manual Model No.: LE40D3281 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.

  • Page 7: Ordering Spare Parts

    Service Manual Model No.: LE40D3281 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 classified as "anti-static" can generate electrical charges sufficient to damage ES devices.
  • Page 8 Service Manual Model No.: LE40D3281 Caution: A “caution ” is used when there is danger that the reader, through incorrect manipulation, 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.

  • Page 9: Chapter 2. Specification

    Service Manual Model No.: LE40D3281 Chapter 2. Specification 2-1. Specification list Model LE40D3281 Screen Size 40" Aspect Ratio 16:9 Resolution 1920x1080 Brightness (cd/m²) Contrast 1500:1 Response Time (ms) Angel of View H:170°, V:160° Color Display 16.7M OSD Language English,French,Spanish. Color System...

  • Page 10: External Pictures (Four Faces)

    Service Manual Model No.: LE40D3281 2-2. External pictures (four faces) Front Side Up Side...
  • Page 11 Service Manual Model No.: LE40D3281 Right Side Back Side...

  • Page 12: Chapter 3. Disassemble And Assemble

    Service Manual Model No.: LE40D3281 Chapter 3. Disassemble and Assemble 3-1. LE40D3281 3-1-1. Remove the Stand 3-1-3. Remove the Mainboard 1. Remove the six screws indicated with red circles. 2. Remove the Mainbord. 1. Lay down the TV set .

  • Page 13: Remove The Remote Control Board

    Service Manual Model No.: LE40D3281 3-1-6. Remove the Remote Control Board And the Key Board Remove the Remote Control Board and the Key Board indicated by red circle in below picture.

  • Page 14: Chapter 4. Location Of Controls And Components

    Service Manual Model No.: LE40D3281 Chapter 4. Location of Controls and Components 4-1. Board Location C Panel B Board A Board Parts number Description A Board 6007460142 Power Supply Module B Board 6021041642 Mainboard C Panel 6047300002 LCD Panel...

  • Page 15: Mainboard

    Service Manual Model No.: LE40D3281 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 IR & Key Interface Inverter connector CN2 Pin number Signal name Pin number...

  • Page 16: Power Supply Module

    Service Manual Model No.: LE40D3281 4-3. Power Supply Module 4-3-1. Function Description To supply power for Mainboard, Panel. 4-3-2. Connector definition CN10 LED driver connector Mainboard power supply connector CN5 CN9，CN10 Pin number Signal name Pin number Signal name Backlight adjust connector...

  • Page 17: Lcd Panel

    Service Manual Model No.: LE40D3281 4-4. LCD Panel LE40D3281 Backlight Unit LVDS CONNECTOR CN1 Connector Definition...
  • Page 18 Service Manual Model No.: LE40D3281...

  • Page 19: Accessories

    Service e Manual Model No o.: LE40D328 Chapt er 5. In nstallat tion Ins structio o ns 5-1. Acc cessories Ba atteries Remo ote Contro...

  • Page 20: External Equipment Connections

    Service Manual Model No.: LE40D3281 5-2. External Equipment Connections Antenna Connection Connect a DVD Player or VCR to Your TV Connect your aerial to the back of the TV into the ANTENNA IN socket. There are two ways in which you can connect a DVD player or VCR to your TV.

  • Page 21: Chapter 6. Operation Instructions

    Service Manual Model No.: LE40D3281 Chapter 6. Operation Instructions 6-1. Front Panel Controls 5 CH+ TV channel up. POWER Press to turn the TV on and off. Toggles between all the vailable SOURCE 6 VOL- Press to decrease the volume.

  • Page 22: Back Panel Controls

    Service Manual Model No.: LE40D3281 6-2. Back Panel Controls Earphone output Coax output Line output input HDMI1 input HDMI2(MHL) input HDMI3 input input PC Audio input 10 ANT input 11 YPbPr input 12 Video in input 13 Audio in input  ...

  • Page 23: Setting Up Your Remote Control

    Service Manual Model No.: LE40D3281 6-3. Setting Up Your Remote Control When using the remote control, aim it towards the remote sensor on the TV. POWER. INPUT. Shortcut button. HOME; Program Number Channel selection. RECALL button. VOL+/VOL-: Volume selection. CH /CH : Channel selection ∧...

  • Page 24: Chapter 7. Electrical Parts

    Service Manual Model No.: LE40D3281 Chapter 7. Electrical Parts 7-1. Circuit Diagram  ...

  • Page 31: Circuit Diagram

    Service Manual Model No.: LE40D3281 7-2 . Wiring Connection Diagram...

  • Page 32: Chapter 8. Measurements And Adjustments

    Service Manual Model No.: LE40D3281 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”, System will be into the factory mode menu when 2 steps above are done.

  • Page 33: General Setting

    Service Manual Model No.: LE40D3281 8-2-2. GENERAL SETTING 1)Init Flash; 2)Uart Enable:Choose on or off in Uart Enable; 3)Dbg Message Enable: Choose on or off in Dbg Message Enable; 4)Test Pattern: Choose the Pattern picture; 5)Dynamic Contrast: Choose on or off in Dynamic Contrast;...

  • Page 34: Sound

    Service Manual Model No.: LE40D3281 8-2-4. SOUND Adjust the values of Sound Mode, Volume Curve,Audio Output and True Volume in different source. 8-2-5. Panel Setting 1)LVDS Bit Mode: choose the Bit; 2)LVDS MAP: choose the MAP; 3)LVDS ODD/Even: choose ODD or Even;...

  • Page 35: Software Update

    Service Manual Model No.: LE40D3281 8-3. Software Update 8-3-1. TSUMV59XE software update 1. Copy the software files to a USB disk on the root directory; 2. Insert the USB disk when the AC power is off; 3. Turn on the AC power in turn to begin;...

  • Page 36: Chapter 9. Trouble Shooting

    Service Manual Model No.: LE40D3281 Chapter 9. Trouble shooting 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...

  • Page 37: Mainboard Ic Introduction

    Service Manual Model No.: LE40D3281 9-2. Mainboard IC Introduction Top view 4  2  5  6 ...
  • Page 38 Service Manual Model No.: LE40D3281 Bottom view...
  • Page 39 Service Manual Model No.: LE40D3281 1.Mainchip—MSD3393LU(U1) 2. Audio Amplifier—TPA3110D2PWPR (UA1) 3.Main Flash Memory—GD25Q32BSIG (UF1) 4.DC/DC convertor 5V-1.8V for MSD3393LU (U1)—LC1117CLTRAD (UL2) 5.voltage convertor 5V to 3.3V_STB —LC1117CLTR33 (UL1) 6.voltage convertor 5V to 1.15V_STB —LC3406CB5TR (UD1) 7.voltage convertor 5V to 3V for tuner—LC1117CLTR33...

  • Page 40: Mainboard Failure Check

    Service Manual Model No.: LE40D3281 9-3. Mainboard Failure Check No picture but have sound  No  Check the power output  Change the Power Board  Yes  No  There’s something wrong  Check the CN2 (BLO)  with FRC  Backlight on/off  Yes  Verify if the DC/DC  No  convertor can output the  Change the corresponding  right Voltage,  DC/DC  QB3 output 5V  Yes  No  Change Verify if     the QM1  QM1  output    Still having  Yes  Change Panel  problems ...
  • Page 41 Service Manual Model No.: LE40D3281 No sound but have picture  Yes  Verify if the speakers are  Change the speakers  broken  No  Verify if the main board has the  No  Check the corresponding audio  right input ,according to the source  input circuit you connect.  you connect.      TV/COMPONENT/AV/VGA/HDMI etc.        No  Verify if UA1 has the right  Verify if UA1 has the right power in    output  No  Yes  Change UA1  Check CN17 input is right  Still having problems  Change Mainboard             ...
  • Page 42 Service Manual Model No.: LE40D3281 No sound No picture  No  Verify if the Power has  Change the  5Vstb output  Power supply  Yes    Verify if CN4 Pin3/4 has 5V  Change Power board  No  input    Yes  No  Verify if CN2 Pin1 has 12V  Change Power board  input  Yes  Change corresponding  Verify if DC/DC convertors have  No  DC/DC convertor  the right output  Yes  Still having  Change  Change the software  Problems  Mainboard           ...
  • Page 43 Service Manual Model No.: LE40D3281 Poor sound  Poor sound  No  Verify if sound system is  Change sound  correct .  system  For ease of use, recommend that customer format the picture and  sound settings in the automatic option.  Updata the software and  Still having  make the reboot;          or  problems  change the maiboard                                 ...
  • Page 44 Service Manual Model No.: LE40D3281 No color for some channel program (black and white)  No color for some chann  el program (black and w  hite)  Verify if the same  No  Check out of picture and sound  problem exists in other  system of this channel  channels  Yes  No  Change the channel to the right sound  check out of picture  and sound system  system (PAL‐BG SECAM/L)  Yes  Refer to relative  instructions in the  Manual for color adjust  Updata the software and  Still having  make the reboot; or  problems  change the maiboard ...
  • Page 45 Service Manual Model No.: LE40D3281 How to know whether the Power board is broken?  Check if the power cord co  Reconnect the power cord with the  No  nnect well?  outlet or Power board.  Yes  No  Check if the Power board  Replace the Power board pls.  output 5V and 12V ?      Still having  Check if Main board / LVDS wire / Panel are in  problems good condition                                     ...

  • Page 46: Pannel Failure

    Service Manual Model No.: LE40D3281 9-4. Pannel Failure Failure Mode...
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  • Page 51 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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