Haier LE50B7000TF Service Manual
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Haier LE50B7000TF Service Manual

Haier LE50B7000TF Service Manual

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SERVICE MANUAL
LED TV
Model No. LE50B7000TF
SIS231C1CI 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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  • 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.: LE50B7000TF 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.: LE50B7000TF 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.: LE50B7000TF Chapter 1. General Information 1-1. Document Information Document format: Adobe PDF Author: shouwang.wen 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.: LE50B7000TF 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.: LE50B7000TF 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.: LE50B7000TF 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.: LE50B7000TF 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.: LE50B7000TF Chapter 2. Specification 2-1. Specification list LE50B7000TF Model Screen Size 50" 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 ect...

  • Page 10: External Pictures (Four Faces)

    Service Manual Model No.: LE50B7000TF 2-2. External pictures (four faces) Front Side Up Side...
  • Page 11 Service Manual Model No.: LE50B7000TF Right Side Back Side...

  • Page 12: Chapter 3. Disassemble And Assemble

    Service Manual Model No.: LE50B7000TF Chapter 3. Disassemble and Assemble 3-1. LE50B7000TF 3-1-1. Remove the Stand 3-1-3. Remove the power-main board. 1. Remove the six screws indicated with red circles. 2. Then remove the side metal board and down metal board.

  • Page 13: Remove The Remote Control Board

    Service Manual Model No.: LE50B7000TF 3-1-6. Remove the Remote Control Board And the Key Board Remove the Remote Control Board and the Key Board indicated byred circle in below picture.

  • Page 14: Mainboard

    Service Manual Model No.: LE50B7000TF 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 CN5 Pin number Signal name Pin number...

  • Page 15: Power Supply Module

    Service Manual Model No.: LE50B7000TF 4-3. Power Supply Module 4-3-1. Function Description To supply power for Mainboard, Panel. 4-3-2. Connector definition CON4 CON6 CON2 CON5 CON3 CON1   driverconnector CON6， Mainboard power supply connector CON3 CON5 Pin number Signal name...

  • Page 16: Lcd Panel

    Service Manual Model No.: LE50B7000TF 4-4. LCD Panel Backlight Unit LVDS CONNECTOR CN1 Connector Definition...
  • Page 17 Service Manual Model No.: LE50B7000TF...
  • Page 18 Service e Manual Model No.: LE50B7000TF Chapt er 5. In nstallat tion Ins s tructio o ns 5-1. Acc cessories Ba atteries Remot te Control...

  • Page 19: External Equipment Connections

    Service Manual Model No.: LE50B7000TF 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 20: Chapter 6. Operation Instructions

    Service Manual Model No.: LE50B7000TF Chapter 6. Operation Instructions 6-1. Front Panel Controls 5 VOL+ Press to increase the volume. POWER Press to turn the TV on and off. 6 MENUPress to select the main menu. TV channel down. 7 INPUTToggles between all thevailable TV channel up.

  • Page 21: Back Panel Controls

    Service Manual Model No.: LE50B7000TF 6-2. Back Panel Controls   Scart input PC Audio input input input HDMI1 input HDMI2 input HDMI3 input CI Slot input MINI-AV input MINI-YPbPr input COAX input USB1 input USB2 input Earphone input...

  • Page 22: Setting Up Your Remote Control

    Service Manual Model No.: LE50B7000TF 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 23: Chapter 7. Electrical Parts

    Service Manual Model No.: LE50B7000TF Chapter 7. Electrical Parts 7-1. Circuit Diagram    ...
  • Page 24 CE25 5V_M 0.1uF-0402-Y5V-+80%-20%-16V 5V_M PVCC VCC_Panel 5V_Panel 5V_Panel 4K7ohm-0402-± 5%-1/16W Imax:50mA LMBT3904LT1G CM20 RM20 10uF-0805-X5R-± 20%-16V PW_ON QE22 3V3_STB 5V_STB RE23 PW_ON 5V_M 5V_STB LC1117CLTR33 3V3_STB 10PIN-2.54-D-H-G TEST CE22 RE22 4K7ohm-0402-± 5%-1/16W PANEL_EN LMBT3904LT1G RE24 200Kohm-0402-± 5%-1/16W 10uF-0805-X5R-± 20%-16V 470uF-16V-± 20%-8×12-105 -XF AO3407A 3K3ohm-0402-±...
  • Page 25 RI40 CI40 HD1_SOG YPbPr_Y RI36 CI36 HD1_Y AV27 SPDIFO RF51 SPDIF_OUT CF51 COAX AVLC18S02003 RI32 DI32 330ohm-0402-± 5%-1/16W 75ohm-0402-± 5%-1/16W CI32 RF52 0.047uF-0402-X7R-±10%-16V 56pF-0402-NPO-± 5%-50V 120ohm-0402-± 5%-1/16W CF52 220ohm-0402-± 5%-1/16W 100ohm-0402-± 5%-1/16W 0.047uF-0402-X7R-±10%-16V 0.1uF-0402-Y5V-+80%-20%-16V 12V_OFF 330pF-0402-X7R-±10%-50V CN13 RCA-105B-003( )- AV18 YPbPr_Pr QM22 NC/AVLC18S02003...
  • Page 26 HDMIA_5V HDMIB_5V HDMIA_5V RH23 HDMIB_5V HDMIA_RX2_DP HOTPLUG_A/ HDMIB_RX2_DP RX2+ RX2+ RH21 HDMIA_RX2_DN 100ohm-0402-±5%-1/16W HDMIB_RX2_DN HOTPLUG_B/ RX2- RX2- HDMIA_RX1_DP HDMIB_RX1_DP SHELL(GND) RX1+ SHELL(GND) RX1+ HOTPLUGA HDMIA_RX1_DN HDMIB_RX1_DN RX1- RX1- HDMIA_RX0_DP 33ohm-0402-±5%-1/16W 1Kohm-0402-±5%-1/16W HDMIB_RX0_DP QH21 RH22 HOTPLUGB SHELL(GND) RX0+ SHELL(GND) RX0+ 33ohm-0402-±5%-1/16W LMBT3904LT1G HDMIA_RX0_DN 10Kohm-0402-±5%-1/16W...
  • Page 27 SVIDEO1_C AV_Y0/C0 SVIDEO1_Y AV_Y1 AV_IN AV_Y2 1Kohm-0402-± 5%-1/16W SCART_VI ANALOG VGA_RIN AU_VBG AUDIO EARPHONE_ROUT XTALI SPI_CLK AV_Y3 YPP_R0 AU_VBG HP_R OSCI_24M SPI_CLK 0.1uF-0402-Y5V-+80%-20%-16V VIDEO VGA_R0_REF EARPHONE_LOUT XTALO SPI_DO AV_Y4 YPP_R0_REF HP_L OSCO_24M SPI_DO SC_RI IN/OUT HIGH VGA_GIN INPUT/OUTPUT FLASH_SPI_DI YPP_G0 LINE_IN_R1 SPI_DI VCOM...
  • Page 28 1V0_M 3V3_M AVDD1P0_HDMI AVDD3P3_HDMI SIS231C1CI 0ohm-0402-±5%-1/16W 0ohm-0402-±5%-1/16W C384 C385 1V5_DDR 1uF-0402-X5R-±20%-6.3V 1uF-0402-X5R-±20%-6.3V 1V0_M 0.1uF-0402-Y5V-+80%-20%-16V 0.1uF-0402-Y5V-+80%-20%-16V OVDD1P5 OVDD1P5 IVDD1P0 OVDD1P5 IVDD1P0 IVDD1P0 IVDD1P0 IVDD1P0 3V3_M IVDD1P0 3V3_M IVDD1P0 OVDD3P3 IVDD1P0 3V3_M_DDR OVDD3P3 IVDD1P0 OVDD3P3 IVDD1P0 OVDD3P3 IVDD1P0 0ohm-0402-±5%-1/16W OVDD3P3 IVDD1P0 1uF-0402-X5R-±20%-6.3V OVDD3P3 IVDD1P0 0.1uF-0402-Y5V-+80%-20%-16V...
  • Page 29 Imax:260mA 5V_M LC1117CLTR33 3V3_Tun Demo_TS_D0 TSI_D0 Demo_TS_D1 TSI_D1 CT17 CT31 CT33 Demo_TS_D2 TSI_D2 Demo_TS_D3 TSI_D3 3V3_Tun 750Kohm-0402-± 5%-1/16W 16MHz-± 20PPM-20PF-HC-49S 1uF-0402-X5R-± 20%-6.3V 4K7ohm-0402-±5%-1/16W Demo_TS_D7 TSI_D7 0.1uF-0402-Y5V-+80%-20%-16V 4K7ohm-0402-±5%-1/16W Demo_TS_D6 TSI_D6 10uF-0805-Y5V-+80%-20%-10V 0.1uF-0402-Y5V-+80%-20%-16V 0.1uF-0402-Y5V-+80%-20%-16V 1.8VRF 33ohm-0402-± 5%-1/16W Demo_TS_D5 TSI_D5 0.1uF-0402-Y5V-+80%-20%-16V 10uF-0603-X5R-±20%-6.3V 10uF-0603-X5R-±20%-6.3V 33ohm-0402-±...
  • Page 30   Model No.: LE50B7000TF Service 7-2 . Wiring Connection Diagram...

  • Page 31: Chapter 8. Measurements And Adjustments

    Service Manual Model No.: LE50B7000TF 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 32: Picture

    Service Manual Model No.: LE50B7000TF 8-2-2. Picture Mode Adjust the Picture Mode,Picture Curve: 1)Brightness; 2)Contrast; 3)Sharpness; 4)Color; 5)Tint     8-2-3. ColorTmp Mode Adjust the ColorTmp Mode, White Balance : 1)R Gain; Gain; Gain; 4)R Offset; 5)G Offset; 6)B Offset;...
  • Page 33 Service Manual Model No.: LE50B7000TF 8-2-4. Audio Mode Adjust the values of Audio Mode, 1) Treble; 2) Bass.   8-2-5. Misc 1)Burn 2)IF AGC; 3)IF AGC_L; 4)ATS; 5)WSS; 6)DTG Scan; 7)ADC White Balance; 8)Auto Power On; 9)Back Light; 10)LCN Switch;...

  • Page 34: Software Update

    Service Manual Model No.: LE50B7000TF 8-3. Software Update 8-3-1. SIS231C1CI 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 35: Chapter 9. Trouble Shooting

    Service Manual Model No.: LE50B7000TF 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 36: Mainboard Ic Introduction

    Service Manual Model No.: LE50B7000TF 9-2. Mainboard IC Introduction Top view 2  4  7  6 ...
  • Page 37 Service Manual Model No.: LE50B7000TF Bottom view 5 ...
  • Page 38 Service Manual Model No.: LE50B7000TF 1.Mainchip—SIS231C1CI (U1) 2. Audio Amplifier— (UA31) PA3110LD2PWPR 3.Main Flash Memory—　　　　　　　　　　　 (U5) 4.DC/DC convertor 5V-1.0V for SIS231C1CI (U1)—RT7237CHGSP(UD41) 5.voltage convertor 5V to 3.3V_STB —LC1117CLTR33 (UL2) 6.voltage convertor 5V to 1.5V_DDR —LC1117CLTRAD(UL61) 7.voltage convertor 5V to 3.3V for tuner—LC1117CLTR33(UT1) 8.Tuner —BW21S7511A01TF(RFT1)

  • Page 39: Mainboard Failure Check

    Service Manual Model No.: LE50B7000TF 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 CN6 (INVERTER)  with FRC  Backlight on/off  Yes  Verify if the DC/DC  No  convertor can output the  Change the corresponding  right Voltage  DC/DC    Yes  No  Change Verify if    the QM2  QM2  output    Still having  Yes  Change Panel  problems ...
  • Page 40 Service Manual Model No.: LE50B7000TF 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 UA31 has the right  Verify if UA31 has the right power in    output  No  Yes  Change UA31  Check CN17input is right  Still having problems  Change Mainboard                   ...
  • Page 41 Service Manual Model No.: LE50B7000TF No sound No picture  No  Verify if the Power has  Change the  5Vstb output  Power supply  Yes    Verify if CN4Pin3/4 has 5V  Change Power board  No  input    Yes  No  Verify if CN4 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 42 Service Manual Model No.: LE50B7000TF 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 43 Service Manual Model No.: LE50B7000TF 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  check out of picture  Change the channel to the right sound  system (PAL‐BG SECAM/L)  and sound system  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 44 Service Manual Model No.: LE50B7000TF 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 45: Pannel Failure

    Service Manual Model No.: LE50B7000TF 9-4. Pannel Failure Failure Mode...
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  • Page 50 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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