Haier HL42R Service Manual
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Haier HL42R Service Manual

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HL42R
TV-8888-126
1

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Summary of Contents for Haier HL42R

  • Page 1 HL42R TV-8888-126...
  • 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 ..........................10 3.3.1 Function Description: ......................10 3.3.2 Connector definition......................11 3.4 LCD PANEL..........................12 3.4.1 Function Description: ......................12 3.4.2 Connector definition......................12 4.

  • 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 Board B Board Main 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 Power connector(CNA1)
  • Page 9 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 red when TV standby BLUE...

  • Page 10: Power Board

    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 AMP connector(CNA2) Pin number...

  • Page 11: Connector Definition

    3.3.2 Connector definition CONNECTOR (CN2 CN3) CN2 CN3 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 Pin No Symbol Description Note Power DC 12V Power DC 12V Power DC 12V Power DC 12V Power DC 12V RO[0]N ODD LVDS SINGAL- RO[0]P ODD LVDS SINGAL+ RO[1]N ODD LVDS SINGAL- RO[1]P...

  • Page 13: Installation Instructions

    RE[1]P EVEN LVDS SINGAL- RE[1]N EVEN LVDS SINGAL+ RE[2]P EVEN LVDS SINGAL- RE[2]N EVEN LVDS SINGAL+ CND1(Header):S14B-PH-SM4-TB(D)(LF)(JST) or equivalent. Pin No. Symbol Description +24V Power input Ground BLON BL ON/OFF Internal PWM Control 4. INSTALLATION 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...

  • Page 14: Choose Your Connection

    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 15 To avoid picture noise (interference), leave an adequate distance between the VCR and TV. Connection Option 1 Set VCR output switch to channel 3 or 4 and then tune the TV to the same channel number. AV OUT VIDEO IN ANT IN Connection Option 2 VIDEO...

  • Page 16: Connecting A Dvd Player

    External Equipment Connections External A/V Source Setup AV OUT VIDEO IN ANT IN How to connect Connect the audio and video cables from the external VIDEO L-AUDIO-R equipment's output jacks to the TV input jacks, as shown in the figure. When connecting the TV to external equipment, match the jack colors (Video = yellow, Audio Left = white, and Audio VIDEO...

  • Page 17: Connecting A Digital Audio Output

    External Equipment Connections Connecting a DTV(digital TV) This TV can receive Digital Over-the-air/Cable signals without an external digital set-top box. However, if you do receive Digital signals from a digital set-top box or other digital external device, refer to the figure as shown below. This TV supports HDCP (High-bandwidth Digital Contents Protection) protocol for Digital Contents (480p,720p,1080i).

  • Page 18: Connecting A Computer

    External Equipment Connections Connecting a computer How to connect 1. To get the best picture quality, adjust the VGA graphics card to 1024x768 . 2. Use the TV`s VGA or DVI (Digital Visual Interface)Audio IN port for audio connections, depending on your computer connector.

  • Page 19: 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 20 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 21 Power source Removing the table stand and installing a wall mount bracket...

  • Page 22: 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 23: 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 24: 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 25: Disassembly Instructions

    6. DISASSEMBLY INSTRUCTIONS 1. Remove the back cover A. Remove the fifteen screws indicated in the figure by the B. Once the back cover has been detached you will have to disconnect the side A/V Board by either disconnecting connector CNC2 on the mainboard or detaching the side A/V board from the back cover by removing the 2 screws indicated by...

  • Page 26: Whole Machine

    6. Remove the Main board A. Disconnect the 7 connectors – CNA1, CN1, CNE1, CNE2, CND1, CNA2 B. Remove the five screws indicated with 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 P.C.B., and Wire subassembly.

  • Page 27: Base Subassembly

    6.2 Base subassembly Name Description Parts number Base subassembly Bolt GB9074.4-88 M4X12 6.3 Back cover subassembly Name Description Parts number Back cover subassembly Back cover assembly Side av Bracket Back jack label Screw SJ2824-87 ST4X12F (Black)

  • Page 28: Screen Bracket Subassembly

    6.4 Screen bracket subassembly Components List Parts number Name Description Armor Plate Metals slice 6.5 Front-frame subassembly...

  • Page 29: Wire Subassembly

    Components List Parts number Name Description Front frame module Former Shell HIPS-FV0 Speaker RoHS-Y613-869-10W8 Key-press control Subassembly Screw Remote control Subassembly 6.6 Wire subassembly---- Connection Sketch Interpretat 6.6.1. Wire Photo 6.6.2 Components List Name Description Parts number Power input (TJC6-5P)-500mm-(D187T) connect wire 24v power wire (TJC3-10)&(PH-4)-50...

  • Page 30: Measurements And Adjustments

    7. MEASUREMENTS AND ADJUSTMENTS The way to the factory mode menu: : press the manu button : input 8893 Finished these operations , system will be into the factory mode menu. 1. Version Info 2. Video 3. Audio...
  • Page 31 4. Channel 5. Gamma 6. BackLight...
  • Page 32 7. Function...

  • Page 33: Block Diagram And Circuit Diagram

    8. BLOCK DIAGRAM AND CIRCUIT DIAGRAM 8.1 BLOCK DIAGRAM MTK5380 8.2 CIRCUIT DIAGRAM...
  • Page 34 INPUT1R AV3L/R_IN AIN3 INPUT1L SY1L/R_IN AIN1 VGAL/R_IN AIN4 INPUT0R HDMIL/R_IN AIN5 INPUT0L...
  • Page 35 ADJ/GND ADJ/GND ADJ/GND...
  • Page 36 ADJ/GND ADJ/GND ADJ/GND...
  • Page 38 390nH/NC 390nH/NC...
  • Page 41 OPWR0_5V POW_SINK PC1/POWDN OE/STB POW3 REXT HPD3 SDA3 SCL3 HDMI2_RX2+ 100nF HDMI2_RX2- C727 100nF HDMI3_RXC- C726 100nF HDMI3_RXC+ HDMI2_RX1+ C725 HDMI2_RX1- 100nF C723 HDMI3_RX0- HDMI3_RX0+ HDMI2_RX0+ 100nF C721 HDMI2_RX0- 100nF C720 HDMI3_RX1- 100nF C719 HDMI3_RX1+ HDMI2_RXC+ HDMI2_RXC- 100nF HDMI3_RX2- C716 SCL1 HDMI3_RX2+ RX5V2_DDC_SCL...
  • Page 47 AIN1R AIN1R SDA34 AIN1L AIN1L SCL34 AIN2R INPUT1L INPUT1L AIN2L INPUT1R INPUT1R AIN3R INPUT0L AIN3R INPUT0L AIN3L INPUT0R AIN3L INPUT0R AIN4R INPUT2L AIN4R AIN4L INPUT2R AIN4L AIN5R PGA1OUTR AIN5R PGA1OUTR AIN5L PGA1OUTL AIN5L PGA1OUTL AIN6R PGA2OUTR AIN6R AIN6L PGA2OUTL AIN6L AIN7R VCMPGA VCMPGA...
  • Page 48 NC#37 NC#24 BSRN BSLN ROUTN LOUTN ROUTN LOUTN ROUTP LOUTP ROUTP LOUTP BSRP BSLP /SHUTDOWN AGND MUTE VBYP FAULT VREG NC#47 ROSC AVCC NC#13 R1787 R1786...

  • Page 49: Wiring Connection Diagram

    9.WIRING CONNECTION DIAGRAM 0090403331...

  • Page 50: Trouble Shooting Guide

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

  • Page 51: 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...

  • Page 52: 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 53 Polarizer Bladder Bladder between Polarizer and top glass Bubble Polarizer Polarizer Tine or rigidity arose Polarizer Scratch Scratch inside Eyewinker inside Eyewinker inside Polarizer Polarizer Polarizer 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...
  • Page 54 When turn Caused by Mechanica noise of backlight Mechanlcal panel,appear unit Nolse cacophony Causeed by between mechanism and Ripple Connectric circle Panel *Connect badness between wire and B/L off B/L lose action electrode *Connect badness brightness B/L dark darker than normal Short between wire and electrode wire B/L wire damaged...

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