Haier HL19K2A Service Manual
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Haier HL19K2A Service Manual

Haier HL19K2A Service Manual

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Download this manual See also: Owner's Manual
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.

SERVICE MANUAL

Model No.
Service No. HL19K2a
Chassis
WARNING
©2010 Qingdao Haier Electronics Co., Ltd.
All rights reserved. Unauthorized copying and distribution is a violation of law.
Haier Group
LCD TV
HL19K2
MTK5305

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Summary of Contents for Haier HL19K2A

  • Page 1: Service Manual

    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. ©2010 Qingdao Haier Electronics Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    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 4-3. LED Driver Board ................16 4-3-1. Function description:................16 4-3-2. Connector definition: ................16 4-4. LCD Panel ....................16 Chapter 5. Installation Instructions .......... 18 Chapter 6. Operation Instructions .......... 23 6-1. Front Panel Controls ................23 6-2. Back Panel Controls ................

  • Page 4: Chapter 1: General Information

    Service Manual Model No.: HL19k2 Chapter 1: General Information 1-1. Document Information Document format: Adobe PDF Author: WangHaiyan Compiler: Bao Qinghong 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.: HL19K2 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.: HL19K2 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. c.

  • Page 7: Ordering Spare Parts

    Service Manual Model No.: HL19K2 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. 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. 5.
  • Page 8 Service Manual Model No.: HL19K2 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. Reference: A “reference”...

  • Page 9: Chapter 2: Specification

    Service Manual Model No.: HL19K2 Chapter 2: Specification 2-1. Specification list Model HL19K2 Screen Size 18.5 inch Aspect Ratio 16:9 Resolution 1366x768 5 (GRAY TO Response Time (ms) GRAY) Angel of View H:170/V:60 Color Display 16777216 No. of Preset Channels OSD Language English/French/Spanish Color System...

  • Page 10: External Pictures (Four Faces)

    Service Manual Model No.: HL19SLW2 2-2 External pictures (four faces) Front Side Left Side...
  • Page 11 Service Manual Model No.: HL19SLW2 Right Side Back Side...

  • Page 12: Remove The Pedestal

    Service Manual Model No.: HL19K2 1.1 Remove the Pedestal Remover the eight screw indicated with Turn to front cover upwards Then remove the front cover from the unit 1 3Remove the LCD panel Lay down the unit so that rear cover downward Remove the two screw from the pedestal indicated with...

  • Page 13: Remove The Speaker

    Service Manual Model No.: HL19K2 Remove the Power Board Remove the Keypad Assembly Remover the two screw indicated with Then remove the Keypad Assembly Remover the four screw indicated with Remove the Remote Then remove the Power Board Control Board Remove the Speaker Remover the four screw indicated with Remover the one screw indicated with...
  • Page 14 Service Manual Model No.: HL19k2 3-4. Remove the Speaker ① ○. Remover the four screw indicated with ② Then remove the Speaker 3-5. Remove the Keypad Assembly ① remove the Keypad Assembly. 3-6. Remove the Remote Control Board ① ○. Remover the one screw indicated with ②...

  • Page 15: Chapter 4. Location Of Controls And Components

    Service Manual Model No.: HL19K2 Chapter 4. Location of Controls and Components 4-1. Board Location Parts number Description A Board DC1470E0200M Main Board(0090724618) B Board 094001233A Power Board 4-2. Main Board...

  • Page 16: Function Description

    Service Manual Model No.: HL19K2 4-2-1 Function Description: Main Board Process signal which incept from exterior equipment then translate into signal that panel can display. 4-2-2 Connector definition Main board connector Power connectors (CN3) Pin number Signal name +12V +12V Notes: CN1-Pin 3: Backlight on/off: The system can turn on or turn off the backlight of TFT LCD Panel through the power supply...
  • Page 17 Service Manual Model No.: HL19K2 LVDS Connector (CN4) Pin number Signal name Description LVDS_D0E_N LVDS EVEN 0 - Signal LVDS_D0E_P LVDS EVEN 0 + Signal Ground LVDS_D1E_N LVDS EVEN 1 - Signal LVDS_D1E_P LVDS EVEN 1 + Signal Ground LVDS_D2E_N LVDS EVEN 2 - Signal LVDS_D2E_P LVDS EVEN 2 + Signal...

  • Page 18: Function Description

    Service Manual Model No.: HL19K2 4-3. Power Board 4-3-1. Function description: To supply power for Panel and Main Board. 4-3-2. Connector definition: INPUT CONNECTOR (CN10) Power supply and Inverter Connector CN10 number Signal name Description Ground Ground Power Power Other Connector Power supply for panel (CNC2) 4-4.
  • Page 19 Service Manual Model No.: HL19K2 Panle LVDS Connector (CNC4) PIN # SIGNAL NAME DESCRIPTION No contact (For AUO internal use) No contact (For AUO internal use) No contact (For AUO internal use) Power Ground RXIN0- Negative LVDS differential data input (0) RXIN0+ Positive LVDS differential data input (0) Power Ground...

  • Page 20: Chapter 5. Installation Instructions

    Service Manual Model No.: HL19K2 Chapter 5. Installation Instructions Accessories Antenna Connection Over-the-air TV reception quality will depend on your antenna type, antenna location and antenna positioning. Multi-family Dwellings/Apartments (Connect to wall antenna socket) Wall Antenna Socket Bronze Wire RF Coaxial Wire (75 ohm) VHF Antenna Turn clockwise to tighten UHF Antenna...

  • Page 21: Connecting A Computer

    Service Manual Model No.: HL19K2 Connection Option 1 Note ❏ Set VCR output switch to channel 3 or 4 and then tune If your DVD player does not have the TV to the same channel number. component video output, use S-Video. Connection Option 2 L -AUDIO- R Connect the audio and video cables from the VCR’s...

  • Page 22: Hdmi Input

    Service Manual Model No.: HL19K2 How to use VIDEO L -AUDIO- R ANT IN Turn on the computer and the TV. Use INPUT on the remote control to select VGA or HDMI source. Check the image on your TV. There may be noise associated with the resolution, vertical pattern, contrast or brightness in VGA mode.

  • Page 23: Cable Sample

    Service Manual Model No.: HL19K2 How To Use If the source device supports Auto HDMI function, the output resolution of the source device will be automatically set to 1280x720p. If the source device does not support Auto HDMI, you need to set the output resolution appropriately.

  • Page 24: Connecting Headphones

    Service Manual Model No.: HL19K2 Analog Audio Cable (Stereo to RCA type) (not supplied with the product) Connecting Headphones You can connect a set of headphones to your set if you wish to watch a TV programmer without disturbing the other people in the room. Plug a set of headphones into the 3.5mm mini-jack socket on the rear panel of the set.

  • Page 25: Chapter 6. Operation Instructions

    Service Manual Model No.: HL19K2 6. Operation Instructions 6-1 Front panel controls INPUT MENU VOL- VOL+ POWER 1 POWER Press to turn on and off the TV. Press to access the input source mode. Press repeatedly to change the source to the one 2 INPUT you want to watch.

  • Page 26: Battery Loading

    Service Manual Model No.: HL19K2 Battery loading 1. Slide open the cover of the battery compartment on the back of the remote controller. 2. Load two 7# (AAA) alkaline batteries in the compartment, (plus and minus poles to respective mark) 3.

  • Page 27: Chapter 7. Electrical Parts

    Service Manual Model No.: HL19K2 Chapter 7. Electrical Parts 7-1. Block Diagram HDMI1 MT5305 Main IC TDA1517 YPbPr tuner LVDS Composite YPbPr Composite Flash VGA(P11)L/R EEPROM...

  • Page 29: Wiring Connection Diagram

    Service Manual Model No.: HL19k2 7-3 .Wiring Connection Diagram...
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  • Page 42: Chapter 8. Measurements And Adjustments

    Service Manual Model No.: HL19K2 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, Step 3: Press “OK” System will be into the factory mode menu when 3 steps above are done. 8-1-2.How to exit If you want to exit this factory menu, please press the button ”Exit”...

  • Page 43: Video

    Service Manual Model No.: HL19K2 8-2-2. Video Auto Color The option could only be used in the VGA and Component model. When we found the color in the two models was abnormal. Then we can use the function to adjust it automatically. Color Temperature The function could adjust the Color Temperature, used when debugging...

  • Page 44: Audio

    Service Manual Model No.: HL19K2 8-2-3. Audio Dolby Banner: When turn it “ON”, the model will be in Dolby authentication state. Compression: Compression style. RF atv line AV/S-Video/YPbPr/VGA Compression Factor: Compression state. Downmix: output model. MTS System: used when debugging. The parameters only used when debugging, no need to be modified.
  • Page 45 Service Manual Model No.: HL19K2 Single RF Scan: Search channels in the frequency scope set in advance. Factory Scan: According to ANTENNA-ANALOG---ANTENNA-DIGITAL---CABLE- ANALOG---CABLE- DIGITAL to search channels, used only in project debugging. Tuner Diagnostic: Project debugging setting, used to inspect the audio function.

  • Page 46: Gamma

    Service Manual Model No.: HL19K2 8-2-5. Gamma Gamma: Bright GAMMA0.8 Middle default settings in the program Dark GAMMA1.2 8-2-6. Backlight Backlight: adjust the backlight.

  • Page 47: Function

    Service Manual Model No.: HL19K2 8-2-7. Function Burning Mode: Turn it “ON” to enter the aging model, This is for factory run-in testing. The screen would display red, green, blue and black screen repeatedly. Each color screen could be exam at that time. Clean Storage The function could make the model turn back to the factory default setting.
  • Page 48 Service Manual Model No.: HL19K2 Remark: The date of the chart only is an example, please don’t adjust the factory mode base on it.

  • Page 49: Chapter 9. Trouble Shooting

    Service Manual Model No.: HL19K2 Chapter 9. Trouble shooting 9-1. Simple check Verify if the television is properly plugged Verify if the television is properly supplied power No picture/ No sound Verify if electricity is available. Verify if correct signals are input Press INPUT button to change signal input to TV input Blank screen Restart the television of power supply is interrupted...

  • Page 50: Power Supply Board Failure Check

    Service Manual Model No.: HL19K2 9-2. Power Supply Board Failure Check.

  • Page 51: Mainboard Failure Check

    Service Manual Model No.: HL19K2 9-3. Mainboard Failure Check Symptom: No Sound No Sound (All Mode) Fail Check the input Change Source input Source Pass Fail Check Re-soldering or change input/output IC U13 Pass Fail Check Re-soldering or change input/output IC U55 Pass Fail...

  • Page 52: Pannel Failure

    Service Manual Model No.: HL19K2 9-4. Pannel Failure Failure Mode...
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  • Page 57 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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