Haier LE24B8 Service Manual
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Haier LE24B8 Service Manual

Haier LE24B8 Service Manual

Msd3393 chassis
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SERVICE MANUAL
LED TV
Model No.
LE24B8
Chassis
MSD3393
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.

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Summary of Contents for Haier LE24B8

  • Page 1 SERVICE MANUAL LED TV Model No. LE24B8 Chassis MSD3393 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.

  • Page 2: Table Of Contents

    Service Manual Model No.: Chapter 1: General Information 1-1. Table of Contents 1. General Information................1-1. Table of Contents 1-2. General Guidelines 1-3. Important Notice 1-4. How to Read this Service Manual ..................3. Location of Controls and Components........... 3-1. Board Location 3-2.
  • Page 3 Service Manual Model No.: 8. Measurements and Adjustments..…………......8-1. How to enter into the factory model 8-2. How to update software 8-3. How to enter into the Hotel Model 9. Trouble-shooting………….............. 9-1. Simple Check 9-2. Main Board Failure Check 9-3. Panel Failure - 02 -...

  • Page 4: General Guidelines

    Service Manual Model No.: 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 Service Manual Model No.: 1-3-6 Safety Check after Repairment in the original positions, or whether there are the positions 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. General Servicing Precautions 1.
  • Page 6 Service Manual Model No.: 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. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip"...

  • Page 7: How To Read This Service Manual

    Service Manual Model No.: 1-3-8. 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. 1-4. How to Read this Service Manual Using Icons: each icon is described in the table below: Note:...
  • Page 8 Service Manual Model No.: Model LE24B8 Screen Size 32 inch Aspect Ratio 16:9 Resolution 1366*768 5.0 (GRAY TO Response Time (ms) GRAY) Angel of View 176o Color Display 16.7M Cable :1-135 No. of Preset Channels Air: 2-69 (ATV&DTV) OSD Language...

  • Page 9: Location Of Controls And Components

    Service Manual Model No.: 3. Location of Controls and Components 3-1 Board Location A Board Description A Board Integration Mainboard 3-2 Main Board - 08 -...
  • Page 10 Service Manual Model No.: 3-2-1 Function Description: Main Board Process signal which incept from exterior equipment then translate into signal that panel can display. Main board connector Keypad andremote connector (J2) Pin number Signal name Description LAMP RED LED_R LED_G LAMP GREEN STANDBY REMOTE CONTROL...

  • Page 11: Lcd Panel

    Service Manual Model No.: 3-3. LED Panel MTC236BLU-C01H(CMO:V236BJ1-P01) - 10 -...
  • Page 12 Service Manual Model No.: 3-4-1.Connector de finition Name Description Remark +12.0V power supply +12.0V power supply +12.0V power supply +12.0V power supply Ground Ground Ground No connection SELLVDS Select LVDS Format (3)(4) Ground RX0- Negative LVDS differential data input. Channel 0 RX0+ Positive LVDS differential data input.

  • Page 13: Disassemble And Assemble

    Service Manual Model No.: 4. Disassemble and assemble 4-1 Remove the Pedestal faces upward 4-2Remove the Back Cover unit. 4-3. Remove the adhesive tape Remove the adhesive tape indicated on the - 12 -...

  • Page 14: Remove The Main Board

    Service Manual Model No.: 4-4 Remove the Main board CN801 PCN4 4-5 Remove the speaker Take out the speaker - 13 -...

  • Page 15: Remove The Remote Control Board

    Service Manual Model No.: 4-6 Remove the remote control take out the remote control board - 14 -...

  • Page 16: Installation Instructions

    Service Manual Model No.: 5. Installation Instructions 5-1 External Equipment Connections Accessories Battery User GUIDE Remote Control - 15 -...
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  • Page 20: Hdmi Connections

    Service Manual Model No.: 5-2 HDMI Connections When the source device(DVD player or Set Top Box) supports HDM How To Connect 1. Connect the source device to HDMI port of this TV with an HDMI cable(not supplied with this product). 2.
  • Page 21 Service Manual Model No.: Cable sample HDMI Cable (not supplied with the product) HDMI to DVI Cable ( not supplied with the product) Analog Audio Cable (Stereo to RCA type) (not supplied with the product) - 20 -...
  • Page 22 Service Manual Model No.: Power source TO USE AC POWER SOURCE Use the AC polarized line cord provided for operation on AC. Insert the AC cord plug into a standard polarized AC outlet. NOTES: Use the attached power cord only. electrician replace the obsolete outlet.

  • Page 23: Operation Instructions

    S e r v i c e M a n u a l Mo del N o . : 6. Operation Instructions 6-1 Front panel controls - 22 -...

  • Page 24: Universal Remote Control

    Service Manual Model No.: 6-3 Setting Up Your Remote Control - 23 -...

  • Page 25: Electrical Parts

    Service Manual Model No.: 7. Electrical parts Block Diagram 7-1. - 24 -...

  • Page 26: Circuit Diagram

    Service Manual Model No.: 7-2. Circuit Diagram Circuit Diagram Circuit Diagram O UT O UT - 25 -...
  • Page 27 VDDC +1.8V_DDR2 +3.3V_Normal +3.3V_PLL +3.3V_ADC - 26 -...
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  • Page 31: Wiring Connection Diagram

    Service Manual Model No.: 7-3 .Wiring Connection Diagram Name Connection Wire(For Speaker) Connection Wire(For Keyboard and Remote) LVDS Wire Connection wire(Blacklight ) - 30 -...

  • Page 32: Measurements And Adjustments

    Service Manual Model No.: Measurements and Adjustments - 31 -...
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  • Page 35: How To Enter Into The Factory Model

    Service Manual Model No.: 8.1 How to enter into the factory model 8.1 How to enter into the factory model 8.1 How to enter into the factory model 1. You can press "source-2-5-8-0" to go into factory setting. Presse the key "exit" to shut the factory setting.

  • Page 36: How To Update Software

    Service Manual Model No.: 8.2 How to update software Haier MSD3393 F/W upgrade with USB SOP Step 1: Ready for F/W Upgrade 1.1 Prepare a USB memory . it from computer’s USB port! Step 2: F/W Upgrade 2.1 AC ON 2.2,then input USB , press "MENU"...

  • Page 37: How To Enter Into The Hotel Model

    Service Manual Model No.: 8.3 How to enter into the hotel model 1. You can press "source-1-0-0-1" to go into the hotel model. Presse the key "exit" to shut the hotel model. Content: 1.Hotel Mode: Hotel mode switch Panel key lock 2.Panel Key Lock: Hotel mode can adjust the maximum volume 3.Max Volume:...

  • Page 38: Trouble-Shooting

    Service Manual Model No.: 9. Trouble shooting 9-1. Simple check - 37 -...

  • Page 47: Panel Failure

    Service Manual Model No.: 9-3. Pannel failure Failure Mode Part Name Description Phenomena Failure cause Block Defect :TCP cracking or cracking Dim or L/D :TCP Sunken V B/D Vertical bar :TCP lead cracking :ACF bonding short :Awful environment and something electric enter V Dim Vertal gray line into LCD...
  • Page 48 Service Manual Model No.: Part Name Description Phenomena Failure cause I n c o m i n g I n s p e c t i o n Standard Bright dot dark dot in Dot Defect pannel Bladder between Polarizer and top glass Polarizer Bubble Bladder in Polarizer...
  • Page 49 Service Manual Model No.: Failure Mode Part Name Description Phenomena Failure cause White Screen B/L normal, only white screen display M a y b e c a u s e d by surge current Black Screen B/L normal, and EDS only Black screen display FIIcker...
  • Page 50 Service Manual Model No.: Failure Mode Part Name Description Phenomena Failure cause Mechanical When Caused Noise turn panel,appear b y M e c h a n i c a cacophony noise of backlight unit Ripple Connectric circle Causeed by between mechanism and pannel B/L off...
  • Page 51 Service Manual Model No.: Failure Mode Part Name Description Phenomena Failure cause Brightness B/L unit badness at bottom of LCM Light leakage brighter than normal B / L b r i g h t n e s s Sheet in B/L unit Mechanlcal or B/ asymmetric is uneven...

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