Haier HL42B-B Service Manual
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Haier HL42B-B Service Manual

Haier HL42B-B Service Manual

Chassis:mtk5371
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Download this manual See also: Owner's Manual
Order NO.WH070625S001V0
HL42B-B
(Chassis:MTK5371)
@
(2007)(Haier Electronic Company Limited)
All rights reserved. Unauthorized copying and distribution is a
violation of law.
1

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Summary of Contents for Haier HL42B-B

  • Page 1 Order NO.WH070625S001V0 HL42B-B (Chassis:MTK5371) (2007)(Haier Electronic Company Limited) All rights reserved. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    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 1.Warning WARNING RISKELECTRIC SHOCK DONOT OPEN WARNING:To reduce the risk of electric shick don’t remove cover or back. No user-serviceable parts inside refer service to qualified service personnel. Safety of operators has been taken into consideration at the design and manufacture phase, but inappropriate operation may cause electric shock or fire.

  • Page 4: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS Read all of the instructions before using this appliance. When using this appliance, always exercise basic safety precautions, including the following: 1)Save these Instructions ---the safety and operating instructions should be retained for future reference. 2)All warning on the appliance and in the operating instructions should be followed. 3)Cleaning --- Unplug from the wall outlet before cleaning.

  • Page 5: Cleaning The Screen

    b. If liquid has been spilled, or objects have been fallen into the unit. c. If the unit has been exposed to rain or water. d. If the unit does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions, as improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the unit to its normal operation.

  • Page 6: Specifications

    2. Specification Model HL42BG Screen size 42inch Aspect ratio 16:9 Resolution 1366x768 Response Time（ms) 8(GRAY TO GRAY) Angel of view 178o Color display 16777216 NO.of preset channels OSD language English Color system NTSC/ATSC Audio system Audio output power(Built-in)(W) 10W×2 Audio output power(outer)(W) Total power input（W）...

  • 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: Mian Board： Process signal which incept from exterior equipment，then translate into signal that panel can display. Signal flowing chart...
  • Page 8 3.2.2 Connector definition Main board connector...
  • Page 9 Power connector(CN26) 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 (CN2) 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 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 Notes: Pin 16 is an option for DISM or LG format(LG=”GND” or “open” DISM=”High”),OUT TV is LG format So Pin 16 is low.

  • Page 11: Power Board

    Side AV connector(CN6) Pin number Signal name Video Headphone wire connector(CN31) Pin number Signal name Description HPOUTL HPDET The detect pin of headphone. The pin is high,when HP insert HP terminal,or else It is low. HPOUTR Ground Download connector(CN27) Pin number Signal name Description 3.3V...

  • Page 12: Lcd Panel

    3.3.2 Connector definition CONNECTOR (CON2) CON2 Signal name CONNECTOR (CON6) CON6 Signal name 16.5V CONNECTOR (CON4) CON4 Signal name ON/OFF 5VSB 3.5. LCD PANEL. 3.5.1 Function Description: Display the signal. 3.5.2 Connector definition...
  • Page 13 Pin No Symbol Description Note No Connection No Connection No Connection Ground RX0- Negative transmission data of pixel 0 RX0+ Positive transmission data of pixel 0 Ground RX1- Negative transmission data of pixel 1 RX1+ Positive transmission data of pixel 1 Ground RX2- Negative transmission data of pixel 2...
  • Page 14 Normal(GND) Abnormal(Open collector) BLON BL ON/OFF I_PWM Internal PWM Control E_PWM External PWM Control Notice: #PIN 13: Analog Dimming Control (Use Pin 13) : 0v-3.3v and Pin 14 must open. #PIN 14:PWM Dimming Control (Use Pin 14):Pin 13 must open. #PIN 13(I_PWM) and Pin 14(E_PWM) can not open in same period.

  • Page 15: Installation Instructions

    4. INSTALLATION INSTRUCTIONS External Equipment Connections Accessories Remote Control User Manual Battery Power cable 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 16: Vcr Connection

    to connect your TV with different input sources. Choose the connection which is best for you. VCR connection To avoid picture noise (interference), leave an adequate distance between the VCR and TV INPUT S- Video CVBS S- Video/CVBS AV OUT Connection Option 1 Audio In Set VCR output switch to channel 3 or 4 and...

  • Page 17: Digital Audio Output

    1. Turn on the DVD player, insert a DVD. 2. Use the INPUT button on the remote control to select YPbPr mode. 3. Press Play button on external equipment for program play. 4. Refer to the DVD player's manual for operating instructions. ■...
  • Page 18 amplificatory or speakers, please turn the TV speakers off. Caution: Do not look into the optical output port. Looking at the laser beam may damage your vision. PC Connection How to connect 1. To get the best picture quality, adjust the PC graphics card to 1024x768 . 2.

  • Page 19: Hdmi Connections

    4.2 HDMI CINNECTIONS 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. No separated audio connection is necessary. How To Use If the source device supports Auto HDMI function, the output resolution of the source device will be automatically...

  • Page 20: Operation Instructions

    HDMI to DVI Cable ( not supplied with the product) 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.
  • Page 21 Introduction Controls This is a simplified representation of front panel. Here shown may be somewhat different from your TV. Front panel controls HL37B HL42B HL37BG HL40BG HL42BG AV3 VIDEO Input INPUT Connects the video signal VIDEO from a video device. AV3 AUDIO Input connect to hear VOL+...

  • Page 22: Back Panel Controls

    5.2 Back panel controls Antennal Input PC VIDEO Input PC/DVI AUDIO Input AV Input AUDIO output Earphon jack Connect cable or Connect the moritor connect the audio Connects the video Connect to Earphon audio Antenna signals to output connector from from an external and audio signal external...

  • Page 23: Universal Remote Control

    Introduction Universal 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 TV. FAV.LIST Function introduction Open the favorite channel list. TV DVD VCR SETBOX CABLE AUDIO POWER Press the SELECT button repeatedly to select Press to turn on and off the TV...

  • Page 24: Disassembly Instructions

    3 Enter [9][8][0] in turn to enter Code Display Mode . LED is off. 4 Press and release [1] once, LED will flash. The times LED flashes is the first digit of code number.(no flash = 0) 5 Press and release [2] once, LED will flash. The times LED flashes is the second digit of code number.

  • Page 25: Whole Machine

    unit. Remove the speaker 5.Remove the power module Remove the eight screws, take out the speaker ① Remove the four screws indicated on the Remove the remote control board figure above by ○ ② Then remove the power module 6.Remove the Main board Remove the two screws, take out the remote control board ①...

  • Page 26: Base Subassembly

    Components List Name Description Parts number HL42B-B whole machine Packaging TV Set Base subassembly Back cover subassembly Screen bracket module 3.3.1 Screen bracket assembly 3.3.2 Main Board 3.3.3 JSK4260-050 LCD PANEL LC402WX7-SLA1 Front-frame subassembly accessory carton 6.2 Base subassembly...

  • Page 27: Back Subassembly

    Parts number Name Description Base subassembly Base assembly Base cover Iron soleplate Base support Board Rubber PAD Bolt GB818-85 M4×8 Bolt SJ2824-87 ST3×10F Bolt GB9074.4-88 M4×12 6.3 Back cover subassembly...

  • Page 28: Screen Bracket Subassembly

    Name Description Parts number Back cover subassembly Back cover assembly Include 2.1,2.2,2.3,2.4,2.5 Back cover Back cover label cover label Side av label Back jack label SJ2824-87 ST4×8F Screw GB818-85 M3×6 6.4 Screen bracket subassembly Components List Name Description Parts number Screen bracket subassembly Screen bracket assembly Include 2.1,2.2,2.3...

  • Page 29: Front Frame Subassembly

    Screen bracket 0090810106B.1 Metallic Jack Board 0090810106B.2 6.5 Front-frame subassembly Components List Parts number Name Description Front frame module Front frame assembly Front frame Speaker Cover Decorate ring Power hole stopper Key board trestle Screw SJ2824-87 ST3X12F Screw SJ2824-87 ST3×10F Screw SJ2825-87 ST3×10F...

  • Page 30: Wire Subassembly

    6.6 Wire subassembly---- Connection Sketch Interpretat 6.6.1. Wire Photo 6.6.2 Components List Name Description Parts number Power input connect wire (2139-5P)-500mm 24v power wire （TJC3-3P）-450mm-（TJC3-15P） LVDS wire 12V Power wire Remote control wire PH7）-350MM-(PH15)-700MM-(PH Key wire (PH-3)-800mm-(PH-3) Speaker wire...

  • Page 31: Measurements And Adjustments

    7. MEASUREMENTS AND ADJUSTMENTS The way to the factory mode menu: 1st, press menu, 2en, input 8893, , press “ok” Finished these operations , system will be into the factory mode menu. 1. Factory menu 2. Version info Version info: This is the current software version.
  • Page 32 2)Video: It include Auto Color and Color Temperature.
  • Page 33 3) Audio: It include these functions : Dolby Banner On/Off Compression Line/RF Compression Factor Full/Off/ 7/8 / 3/4 / 5/8 / 1/2 / 3/8 / 1/4 / 1/8 Downmix Off/ Lt/Rt /Stereo 4)Channel:...
  • Page 34 Channel menu includes: Range Scan Single RF Scan Factory Scan 5) Function:...

  • Page 35: Block Diagram And Circuit Diagram

    Function ment includes: Burning Mode On/off Clean Storage 8. BLOCK DIAGRAM AND CIRCUIT DIAGRAM 8.1 BLOCK DIAGRAM 8.2 CIRCUIT DIAGRAM...
  • Page 36 CE83 10uF/16V YPBPR1L_IN R401 YPP1_L 1,2,7,11,12,15,16 CE67 10uF/16V YPBPR0L_IN R402 YPP0_L +12V 1,2,16 +12V DV33 CE76 10uF/16V YPBPR1R_IN R403 YPP1_R 1,2,5,6,7 DV33 SIF_SCL R399 SCL14 CE66 10uF/16V YPBPR0R_IN R404 YPP0_R SIF_SDA R400 SDA14 CE65 10uF/16V YPBPR2R_IN R243 YPP2_R C298 C299 +5VSB CE75 1,2,7,12,14,15...
  • Page 37 AV33 2,5,6,11,12 AV33 DV33 1,2,5,6,7,13 DV33 +12V 1,2,13 +12V 1,2,7,11,12,13,15 +5VSB +5VSB +5V_LVDS +12V CK1P CK1P CK1N R300 CK1N R295 R297 R296 R298 NS/0 NS/0 NS/0 R299 SMD-R0603 LVDSPOWER LVDSVDD SMD-R0603 TP56 R301 DIMMING DIMMING CE106 C330 C332 TP/SMD/D1.0 220uF/16V 0.1uF 0.1uF SMD-R0603...
  • Page 38 CN20 +5VSB MIC (4pin/2.0mm) +24/16.5V 33uH/2A +24/16.5V Speaker-R+ L5-9 R284 4.7K CE96 CE101 C355 C311 0.1uF/50V CE95 0.01uF/35V 0.1uF 0.47uF/50V 1000uF/35V SMD-CC0603 33uH/2A R273 4.7K +12V Speaker-R- GPIO_19 L5-9 GPIO_19 5 13 MMBT3904 CE97 0.1uF/50V R280 CE116 HPDET D46 1N4148 220uF/16V MMBT3904 R270...
  • Page 39 +12V C339 LM2596S-5.0/AT1796-5.0 AP1506-3.0/ADJ R316 3K 10nF +5V_USB Vout 22uH--> 47uH CE118 C337 CE108 470uF/16V R314 C338 C343 CAP8-5MM 0.1uF SK34DI +5V_LVDS 1000uF/10V 0.1uF +5V_LVDS 0.1uF GPIO_4 GPIO_4 C334 +12V 10pF 1,2,13,14,15 +12V C341 +12V LM2596S-5.0/AT1796-5.0 AP1506-3.0/ADJ R317 3K 10nF +5V_LVDS Vout 22uH-->...
  • Page 40 +5VSB FB57 150_Ohm_600mA AV33 R220 HDMI_3V3 R204 100K-> R221 C286 R225 4K7_DNS R213 HDMI1_5VIN R222 10uF/16V 4K7_DNS HDMI1 INPUT R198 BAV70 R226 R199 connect to CN17 220R 5V_SB ? SHELL2 RX1_HOTPLUG# R223 47K SHELL4 HP DET HDMI1_5VIN 8-pin SOP. TMDS341A C287 R200 RX5V1_DDC_SDA...
  • Page 41 R191 U0TX NEARLY VGA CONNECTOR NEARLY MT5372 SMD-R0603 1,2,7,12,13,15,16 DV33SB 1,2,5,6,7 DV33SB BAV99 AV33 EZJZ0V800AA 2,6,12 AV33 R190 C266 SMD-R0603 68--0 SMD-R0603 FB53 SMD-CC0603 R194 C275 FB/80OHM 10nF RED_GND SMD-L0603 SMD-R0603 SMD-CC0603 +5VSB GRN_GND R188 C277 VGASDA_IN BLU_GND SMD-R0603 SMD-CC0603 VGA_PLUGPWR HSYNC# BAV99...
  • Page 42 NEARLY AV CONNECTOR NEARLY MT5372 AV1_IN R123 C215 CVBS1 AV2L_IN AV1L_IN 47nF FB41150_Ohm_600mA R0603/SMD SMD-CC0603 R124 C216 C217 R125 C218 R126 47pF NS/10nF 10nF R0603/SMD SMD-CC0603 NS/EZJZ0V800AA EZJZ0V800AA SMD-R0603 SMD-CC0603 R0603/SMD SMD-R0603 SMD-CC0603 R0603/SMD CVBS1 CVBS1 CVBS2 CVBS2 CVBS3 SY0_IN R127 C219 CVBS3...
  • Page 43 DV13_DDR DV13_DDR DV26_DDR DV26_DDR DV26_DDR DV26_DDR RWE# RN26 22x4 MEM_WE# MEM_WE# RN27 75x4 RDQ0 RN28 47x4 MEM_DQ0 RN29 75x4 RCAS# MEM_CAS# MEM_CAS# RDQ1 MEM_DQ1 RRAS# MEM_RAS# MEM_RAS# RDQ2 MEM_DQ2 RCS# RN0603/SMD MEM_CS# MEM_CS# RN0603/SMD RDQ3 RN0603/SMD MEM_DQ3 RN0603/SMD MEM_DQ0 MEM_DQ15 MEM_DQ16 MEM_DQ31 DQ15...
  • Page 44 DV33 DV33SB NS/10Kx4 SMD-R0603 RN0603/SMD SMD-R0603 CE121 10uF/16V SMD-R0603 DV33 CAP6-5MM TVTREF#1 ORESET# JTAG_RST# 1,2,11,12,13,15,16 JTAG_TDI +5VSB 1,2,16 +5VSB 2N3904 JTAG_TMS SMD-R0603 SOT23 JTAG_TCK 4.7K DV33 1,2,5,6,13 DV33 C160 SMD-R0603 JTAG_RTCK SMD-R0603 DV33SB 1,2,5,6,11 DV33SB JTAG_TDO SMD-R0603 1N4148 0.1uF SMD-R0603 SMD-CC0603 SMD-4148 GPIO_0...
  • Page 45 NEARLY YPBPR CONNECTOR NEARLY MT5372 R139 C231 SOY0 FB43 SMD-R0603 SMD-CC0603 Y0_IN R140 C232 YPBPR1L_IN FB/80OHM 10nF SMD-R0603 SMD-L0603 SMD-CC0603 C233 R141 15pF C234 R142 BAV99 BAV99 BAV99 BAV99 BAV99 BAV99 SMD-CC0603 NS/10nF EZJZ0V800AA NS/10K SMD-R0603 SMD-R0603 SMD-CC0603 SMD-R0603 CN10 Y_GND R143 C235...
  • Page 46 DV33SB AV12 AV12 AV33 AV33 FB23 DV33 1,2,5,7,13 DV33 AVCC_SRV AVCC_HDMIPLL AVCC_ADCPLL AVCC_VAD0 FB24 AVCC_AADC AV33 2,12 AV33 DV26_DDR 2,5,8 DV26_DDR C110 C111 C112 SMD-L0603 CE38 C113 C114 SMD-L0603 CE43 C115 AV15 2,12 AV15 0.1uF 0.1uF 0.1uF 4.7uF/16V 0.1uF 0.1uF NS/4.7uF/16V 0.1uF AV12...
  • Page 47 ADIN1 ADIN1 OPWRSB OPWRSB ORESET# ADIN0 ORESET# ADIN0 OPCTRL0 OPCTRL0 RESERVE HEAT-SINK SPACE OPCTRL4 OPCTRL4 OPCTRL5 OPCTRL5 DV26_DDR DV33 DV33 OPCTRL6 1,2,6,7,13 DV33 OPCTRL6 AV33 OPCTRL7 2,6,12 AV33 OPCTRL7 DV26_DDR 2,6,8 DV26_DDR AV12 AV12 OXTALI OXTALI DV33SB 1,2,6,7,11 DV33SB OPWM0 OPWM0 OPWM1 OPWM1...
  • Page 48 DVDD33 DV33_DM DV33_DM DV18_DM DV18_DM GLOBAL SIGNAL RESERVE HEAT-SINK SPACE MT5112_IF_AGC IF_AGC 1K_1% SMD-R0603 47nF IF_AGC IF_AGC SMD-CC0603 FAT_IN+ CLOSE TO MT5112 FAT_IN+ MT5112AD_BD/TQFP100 FAT_IN- FAT_IN- TUNER_SCL1 TUNER_SCL1 TUNER_SDA1 TUNER_SDA1 FAT_IN- ADVDD33_1 TUNER INTERFACE ADVDD33 10nF GPIO1(P1.1) SMD-CC0603 GPIO_0 RESET_ SIF_SCL AVSS8 HOST_CLK...
  • Page 49 SAMSUNG COMBO-TUNER NEARLY TUNER NEARLY MT5372 NEARLY TUNER NEARLY MT5372 +30V_TUNER +5V_TUNER FAT_IN+ ADIN3 R322 1k 100K FB13 SMD-R0603 SMD-R0603 FAT_IN- SMD-L0805 220K 100nF SMD-R0603 10nF SMD-R0603 SMD-R0603 SMD-R0603 SMD-CC0603 ROUTE SYMMETRICALLY RFAGC SMD-CC0603 VT33 NS/0 SMD-R0603 IF_AGC NTSC_CVBS IFAGC 4.7K 2SC2712 SMD-R0603...
  • Page 50 700mA DV33 or +5V check to delete it AP1513/SOP-8 +12V DV12 NS/0 SMD-R1210 10uH CE31 SMD-L0805 SMD-L0805 27uH/POWER CHOKE 100uF/16V 0.1uF CE12 R349 220uF/16v L5-9 delet it,only for test 0.1uF CAP-5MM SMD-CC0603 220uF/16v CE27 NS/100nF NS/100nF 1.2K_1% CE29 SMD-CC0603 AP1084-3.3V 0.1uF CAP8-5MM CAP6-5MM...
  • Page 51 MT5372 ANALOG POWER CN28 OIRI ADIN0 LED_G +5VSB NS/100PF ADIN1 LED_R +5VSB OIRI HAIER Confidential NEAR THE MTK5371 MIC (4pin/2.0mm) MediaTek Inc. No.1-2, Innovation Rd 1, SBIP, Hsin-Chu City 300 GROUND DIGITAL GROUND TEL:(03)567-0766 FAX:(03)578-7610 Title AGND_PLL GROUND ANALOG GROUND...

  • Page 52: Wiring Connection Diagram

    9. WIRING CONNECTION DIAGRAM 10. TROUBLE SHOOTING GUIDE 10.1. Simple check 10.1.1 LCD is not bright 10.1.2 No picture...
  • Page 53 First, check cables which connect with PSU，then check as follows 1) Check input voltage voltage: +5VSB→POWER ON(5V) →+12V→5V connector: CN4(P1) → CN4(P13) →CN5(P1,P2,P3) →CN4(P2,P3,P4,P5) →CN4(P12) →CON4(P14) 2)Check output voltage voltage: Vblon →+5V→Vipwm connector: CN4(P12) →J28(P26-P30) →CON4(P14) CN4 CN5 On/Off Control Voltage BLON Internal PWM...
  • Page 54 10.1.3 No sound...
  • Page 55 No sound Change power CN20 is 18V? board U29 low? Change U29 Change main board IS there input of 2ed pin of U29? Is there output Change U29 of 21 and 39 pins of u29 Change speaker...

  • Page 56: Psu Failure Check

    First，check cables which connect with PSU，then check as follows 1) Check input voltage as NO picture 2) Check speaker output First, check speaker anode (+) and cathode (-),confirm speaker short or not. If short , replace speaker. Second, check CN2, CN3 with oscillograph, confirm wave output or not. Connector: CN2, CN3 10.2 PSU failure check State: No power...

  • Page 57: 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 58 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 59 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 Short between wire and electrode darker than normal wire B/L wire damaged Operation abnormal or systemic noise damaged wire Without backlight...
  • Page 60 Sincere Forever...

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