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Haier HL42T Service Manual
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Haier HL42T Service Manual

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HL42T
TV-8888-125
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Summary of Contents for Haier HL42T

  • Page 1 HL42T TV-8888-125...
  • Page 2 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 3: Table Of Contents

    CONTENT 1 .Warning ................................4 2. Specification..............................6 3. LOCATION OF CONTROLS AND COMPONENTS ................7 3.1.Board Location ...........................7 3.2. Main Board.............................7 3.2.1 Function Description .......................7 3.2.2 Connector definition........................8 3.3 Power Board ..........................11 3.3.1 Function Description: ......................11 3.3.2 Connector definition......................11 3.4 LCD PANEL.

  • Page 4: Warning

    1 .Warning CAUTION: These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. IMPORTANT SAFETY INSTRUCTIONS Read all of the instructions before using this appliance.
  • Page 5 Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a grounding prong. The wide blade or grounding prong are provided for your safety. If the plug does not fit, contact an electrician to replace the obsolete outlet.

  • Page 6: Specification

    After completing any service or repair to this TV, ask the service technician to perform routine safety checks to determine that your TV is in correct operating condition. Power source Operate your TV only from the type of power source indicated on the marking label. If you are not sure of the type of power supplied to your home, consult your TV dealer or local power company.

  • Page 7: Location Of Controls And Components

    3. LOCATION OF CONTROLS AND COMPONENTS 3.1.Board Location Parts number Description A Board Power supply Board B Board Main Board C Board MTK(8280) board 3.2. Main Board 3.2.1 Function Description Main Board： Process signal which incept from exterior equipment，then translate into signal that panel can display. Signal flowing chart.

  • Page 8: Connector Definition

    MTk5380 3.2.2 Connector definition...
  • Page 9 Power connector(CNA1) Pin number Signal name Description ON/OFF Control the power of system Ground 5VSB Power of TV standby Ground Ground Power of system Power of system IR connector (CNE1) Pin number Signal name Description Supply the Power of bright and IR receiver Receive IR signal Show green when TV standby Show blue when TV working...
  • Page 10 LVDS Signal connector(CND1) Pin number Signal name Pin number Signal name Pin number Signal name LVDS VDD Not use LVDS VDD Not use LVDS VDD Not use LVDS VDD Not use Not use Not use CK1P LVDS_SEL CK1N Pin number Signal name Not use Not use...

  • Page 11: Power Board

    3.3 Power Board 3.3.1 Function Description: Supply power for Main board,Panel and DC/DC power board 3.3.2 Connector definition CONNECTOR (CN2 CN3) CN2 CN3 Signal name CONNECTOR (CN5) Signal name CONNECTOR (CN4) Signal name ON/OFF 5VSB...

  • Page 12: Lcd Panel

    3.4 LCD PANEL. 3.4.1 Function Description: Display the signal. 3.4.2 Connector definition...

  • Page 14: In Stallation Instructions

    4. IN STALLATION INSTRUCTIONS 4.1 External Equipment Connections Accessories Antenna Connection Generally speaking, to enjoy a clearer picture, we recommend that you use a CATV system or an outdoor antenna . location and antenna positioning.
  • Page 15 External Equipment Connections NOTE: All cables shown are not included with the TV. Choose Your Connection There are several ways to connect your television, depending on the components you want to connect and the quality of the signal you want to achieve. The following are examples of some different ways to connect your TV with different input sources.

  • Page 20: Hdmi Cinnections

    Monitor Out Setup Connect the second TV or monitor to the TV`s AV OUT. See the Operating Manual of the second TV or monitor further details regarding that device`s input settings. Note YPbPr, PC, HDMI, DTV input sources cannot be used for Monitor out.
  • Page 21 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)
  • Page 22 Power source Removing the table stand and installing a wall mount bracket...

  • Page 23: Operation Instructions

    5. OPERATION INSTRUCTIONS 5.1 Front panel controls 1. MENU: Press to show the on-screen menu. 2. INPUT: Press to show the input source mode. In the MENU/INPUT screen, these buttons serve as OK button. 3. VOL -/+: Press to adjust the volume .In the MENU screen, these buttons serve as left/right buttons. 4.

  • Page 24: Back Panel Controls

    5.2 Back panel controls 1 HDMI/DVI: Connect an HDMI/DVI signal to the jack. 2 PC VIDEO IN: Connect the monitor output connector from a PC to the jack. 3 PC Audio IN: Connect an audio cable for a computer to the jack. 4 DVI Audio IN: Connect a component video device to these jacks.

  • Page 25: Setting Up Your Remote Control

    5.3 Setting Up Your Remote Control The remote control cannot be operated unless the batteries are properly loaded. When using the remote control, aim it at the remote control sensor on the. Notes • Do not expose the remote control to shock or liquids. •...

  • Page 26: Disassembly Instructions

    6. DISASSEMBLY INSTRUCTIONS 1. Remove the Back Cover Remove the twelve screws indicated on figure above by Then remove the back cover from the unit. 2. Remove the Pedestal Lay down the unit so that rear cover faces upward Remove the four screw from the rear cover indicated with Then remove the pedestal.

  • Page 27: Whole Machine

    6.1 whole machine The whole machine includes Packaging subassembly、Front-frame subassembly、Back-cover subassembly、Screen bracket subassembly、Base subassembly、LCD panel、Power supply assembly （PSU）. Components List Name Description Parts number Bagging of owner's manual Bagging of whole machine TV Set Base subassembly Back-cover subassembly Screen bracket subassembly 3.3.1 Screen bracket 3.3.2...

  • Page 28: Screen Bracket Subassembly

    6.3 Screen bracket subassembly Components List Parts number Name Description Screen bracket subassembly Screen bracket 6.4 Front-frame subassembly Components List Parts number Name Description Front frame subassembly Front frame Right sound box assembly Lift sound box assembly Switch board Key board...

  • Page 29: Wire Subassembly

    6.5 Wire subassembly---- Connection Sketch Interpretat 6.5.1. Wire Photo 6.5.2 Components List Name Description Parts number Assembled connective wire AC Power connective Wire (2139-5P)-500mm 24V backlight power wire PH-14P/750/PH-4A/3P 12V、5V power wire TJC3-7/300/TJC3-7 LVDS wire A2006H00-2*16P)-400mm-(FI-RC3 LVDS wire A2006TOP-2)-400mm-(FI-RC3-1B LVDS wire A2006H00-2*16P)-450MM-(A2006H LVDS wire A2006H00-2*8P)-450mm-(A2006H0...
  • Page 30 1. Version Info 2. Video 3. Audio...
  • Page 31 4. Channel 5. Gamma 6. BackLight...

  • Page 32: Block Diagram And Circuit Diagram

    7. Function 8. BLOCK DIAGRAM AND CIRCUIT DIAGRAM 8.1 BLOCK DIAGRAM MTK5380 8.2 CIRCUIT DIAGRAM...
  • Page 33 C0603/SMD C100UF16V/D6.3H7 R0603/SMD R0603/SMD OCSET R2069 100K R0603/SMD D184 R2070 SCHOTTKY DIODE/B340A D/SMA/SMD R0603/SMD +5VSB NUSTC_5380P1_V2_FOR:HAIER CB1006 0.1uF CNE1 0.8 x (1+12K/2.2K) = 5.1V C0603/SMD No.1-2, Innovation Rd 1, SBIP, Hsin-Chu City 300 CNE2 IR_IN 100R R1694 OIRI Title ADIN1_K0...
  • Page 34 C100UF16V/D6.3H7 C100UF16V/D6.3H7 CE611 22uF/16V R958 C22UF16V/D4H7 R0603/SMD R0603/SMD 1.25 x (1+120/110) = 2.6V 1.25 x (1+180/110) = 3.3V NUSTC_5380P1_V2_FOR:HAIER No.1-2, Innovation Rd 1, SBIP, Hsin-Chu City 300 Title DIGITAL POWER Document Number Drawn Size MT5380P1-V2 Date: Wednesday, January 30, 2008...
  • Page 35 +5V_TUNER CE224 C574 CB398 CB197 220uF/16V 0.1uF 0.1uF C330UF10V/D6.3H7 C0603/SMD C0603/SMD C0603/SMD NUSTC_5380P1_V2_FOR:HAIER POWER SUPPLY +5V FOR TUNER No.1-2, Innovation Rd 1, SBIP, Hsin-Chu City 300 Title ANALOG POWER Document Number Drawn Size MT5380P1-V2 Date: Wednesday, January 30, 2008 Sheet...
  • Page 36 R0603/SMD For PDP use. OSDA0 OSCL0 CB73 0.1uF C0603/SMD C0603/SMD FB13 150_Ohm_2A R1206/SMD HOLE/GND HOLE/GND HOLE/GND HOLE/GND HOLE/GND NUSTC_5380P1_V2_FOR:HAIER No.1-2, Innovation Rd 1, SBIP, Hsin-Chu City 300 Title PERIPHERAL Document Number Drawn Size MT5380P1-V2 Date: Wednesday, January 30, 2008 Sheet...
  • Page 37 D_IF_O/P_2 GND3 ROUTE SYMMETRICALLY GND4 TUNER_ALPS/E TUNER/ALPS/E C158 C157 12pF/NC 12pF/NC C0603/SMD C0603/SMD L/IND/SMD/0603 L/IND/SMD/0603 NUSTC_5380P1_V2_FOR:HAIER No.1-2, Innovation Rd 1, SBIP, Hsin-Chu City 300 Title Analog PLL / USB2.0/TUNER Size Document Number Drawn MT5380P1-V2 Date: Wednesday, January 30, 2008 Sheet...
  • Page 38 CA26 CA27 CA30 CEA4 0.1uF 0.1uF 0.1uF 0.1uF 4.7uF/10V 22uF/16V C0603/SMD C0603/SMD C0603/SMD C0603/SMD C0805/SMD C22UF16V/D4H7 NUSTC_5380P1_V2_FOR:HAIER CA17 CA19 CA20 CA21 CA22 CA28 CA23 No.1-2, Innovation Rd 1, SBIP, Hsin-Chu City 300 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 4.7uF/10V C0603/SMD...
  • Page 39 0.1uF 0.1uF 0.1uF 0.1uF C0603/SMD C0603/SMD C0603/SMD C0603/SMD C0603/SMD C0603/SMD C0603/SMD ICE mode NUSTC_5380P1_V2_FOR:HAIER DDR BYPASS Near IC No.1-2, Innovation Rd 1, SBIP, Hsin-Chu City 300 Trap Mode OPCTRL5 OPCTRL4 Title Core Reset 1 us FLASH/JTAG/UART/IR/TRAP Document Number Drawn Size...
  • Page 40 OSDA1 HPD2 SDA_SINK D1 Shield HDMI1_RX1+ RX5V1_DDC_SDA R2084 OSCL1 SDA2 SCL_SINK HDMI1_RX2- D2 Shield HDMI1_RX2+ I2C_CTL_EN RX5V1_DDC_SCL SHELL3 SCL2 SHELL1 HDMI/HAIER EDID_BRG_EN NC/SCHOTTKY DIODE/B340A RX0_CB R2085 POW0 RX0_C HDMI1_RXC- R2086 D216 R2043 R2066 D/SMA/SMD 100K HDMI1_RXC+ 1K/NS HDMI2_5VIN HDMI2 INPUT...
  • Page 41 SELECT Low For Internal OPCTRL2 Back Light circuit SELECT Hi For External R404 4.7k 2N3904 R399 R0603/SMD SOT23/SMD R0603/SMD NUSTC_5380P1_V2:FOR:HAIER No.1-2, Innovation Rd 1, SBIP, Hsin-Chu City 300 Title LVDS/MUTE +12V Size Document Number Drawn CE71 CB216 CE72 CB217 MT5380P1-V2...
  • Page 42 C0603/SMD ESD0603/SMD R0603/SMD YPBPR0R_IN C634 4.7uF/6.3V R153 AIN2_R +5VSB C0603/SMD R0603/SMD Y_GND R1190 R1189 C355 10nF R0603/SMD C0603/SMD RCA3X1 R0603/SMD RCA3/HAIER PB0_IN R1192 C357 10nF PB0P 80/100MHZ R0603/SMD C0603/SMD YPBPR0R_IN R0603/SMD DVD_DET 4.7K BEAD/SMD/0603 YPBPR0L_IN GPIO R0603/SMD DVD_PB1 C359 PB_IN...
  • Page 43 1,2,3,4,5,6,7,8,9,10,12,13,14,15 +5VSB NEARLY IC 1,2,13,15 +5VSB +5VSB VGA/HAIER R161 4.7nF C131 NEARLY VGA CON. R0603/SMD C0603/SMD RED_GND 80/100MHz FB67 R163 10nF C132 GRN_GND 1N4148 BEAD/SMD/0603 R0603/SMD C0603/SMD VGASDA_IN 1N4148/SMD VSYNC VSYNC BLU_GND HSYNC HSYNC HSYNC# R165 C134 1N4148 VGA_PLUGPWR NS/EZJZ0V800AA...
  • Page 44 SY1R_IN R0603/SMD ESD0603/SMD R0603/SMD R1525 C460 47pF D146 CVBSO_GND C0603/SMD NS/EZJZ0V800AA R0603/SMD D148 D104 ESD0603/SMD RCA2X1 R1215 C570 GND_CVBS RCA2/HAIER R0603/SMD C0603/SMD NS/EZJZ0V800AA NS/EZJZ0V800AA ESD0603/SMD ESD0603/SMD AV1R_IN AV1L_IN AV1_IN SY1_IN R1597 C534 47nF R0603/SMD R1560 C0603/SMD AV3_IN R1856 R1857 C699 47nF...
  • Page 45 AOMCLK C195 AOLRCK 4.7uF/10V CB166 HPDET# R324 GPIO_4 AOBCK C0805/SMD 0.1uF R0603/SMD C0603/SMD +3V3SB R1612 R0603/SMD OPCTRL1 NUSTC_5380P1_V2_FOR:HAIER No.1-2, Innovation Rd 1, SBIP, Hsin-Chu City 300 Title LINE OUT/CEC Document Number Drawn Size MT5380P1-V2 Date: Wednesday, January 30, 2008 Sheet...
  • Page 46 AV3L_IN C601 1uF SOT23/SMD C0603/SMD R0603/SMD HPOL CE21 220uF/16V PHONE C602 1uF C0603/SMD AV3R_IN C705 4.7uF/6.3V R1867 AIN3R AV3R_IN C220UF16V/D6H11 R0603/SMD PHONE/HAIER C0603/SMD C0603/SMD R0603/SMD HPOUTR HPOR CE20 220uF/16v C220UF16V/D6H11 R0603/SMD HPDET AR2_OUT/LINE R1615 R1616 HPOUTL AL2_OUT/LINE CVBS_OUT R0603/SMD R0603/SMD SY1L_IN C653 4.7uF/6.3V...
  • Page 47 Speaker-L+ 13,14 Audio AMP L5-9 C690 13,14 0.1uF/50V MUTE C/DIP MUTE R1792 AR1_OUT/AMP AR1_OUT/AMP AL1_OUT/AMP R0805/SMD AL1_OUT/AMP R1793 R0805/SMD NUSTC_5380P1_V2_FOR:HAIER No.1-2, Innovation Rd 1, SBIP, Hsin-Chu City 300 Title Size Document Number Drawn MT5380P1-V2 Date: Wednesday, January 30, 2008 Sheet...

  • Page 49: Trouble Shooting Guide

    10. TROUBLE SHOOTING GUIDE 10.1. Simple check 10.1.1 LCD is not bright 10.1.2 No picture...

  • Page 50: No Sound

    First, check cables which connect with PSU，then check as follows 1) Check input voltage (CNA1) 2)Check output voltage (CND1) 10.1.3 No sound First，check cables which connect with PSU，then check as follows 1) Check input voltage as NO picture 2) Check speaker output 10.2 PSU failure check State: No power First, check cables which connect with PSU, then check as follows...

  • Page 51: Panel Failure

    10.3 Panel failure Failure Mode 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 Virtal gray :Awful environment and something electric enter into V Dim line :Mis-align between TCP and Panel...
  • Page 52 Abnormal 1. Chip lose action Abnormal Display Display 2. IC Abort or jointing bad Circuit 3. Panel and VSC connect bad Bright and dark Flashing display alternately Failure Mode Part Name Description Phenomena Failure cause B/L normal, only White white screen Screen display...
  • Page 53 *Connect badness brightness B/L dark Short between wire and electrode darker than normal wire B/L wire damaged Operation abnormal or systemic noise damaged wire Without backlight Operation abnormal or systemic noise open shut B/L shutdown in Short between lamp housing and wire, Because down sometime consume power too much...

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