Haier 48LTV3002 Service Manual
Haier 48LTV3002 Service Manual

Haier 48LTV3002 Service Manual

18.5" 21.6" lcd tv
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18.5" 21.6" LCD TV
Service
Service
Service
Description
Table of Contents............................................................1
Important Safety Notice...................................................2
Revision List.........................................................3
1. General Specification..................................................4
2. Operating Instructions............................................5
2.1 The Use of Remote Control...................................5
2.2 To Use the Menus...............................................6
2.3 Front Panel Control Knobs..................................10
2.4 How to Connect................................................11
3. Input/Output Specification.......................................12
4. Mechanical Instructions.........................................14
5. Repair Flow Chart .............................................17
6. PCB Layout ......................................................24
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
All manuals and user guides at all-guides.com

TABLE OF CONTENTS

Page
6.1 Main Board....................................................24
6.2 Power Board..................................................26
6.3 Key Board.....................................................32
6.4 IR Board.......................................................32
7. Adjustment/FW Upgrade/EDID...........................33
8. Block Diagram........................................................46
9. Wiring Diagram......................................................48
10. Schematic Diagram........................................49
10.1 Main Board..................................................49
10.2 Power Board.................................................59
10.3 Key Board...................................................63
10.4 IR Board.....................................................64
SAFETY NOTICE
1
Description
Haier 48(55)LTV3002
Horizontal Frequency
31.5~48 KHz
Page

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Summary of Contents for Haier 48LTV3002

  • Page 1: Table Of Contents

    All manuals and user guides at all-guides.com 18.5″ 21.6″ LCD TV Haier 48(55)LTV3002 Service Service Service Horizontal Frequency 31.5~48 KHz TABLE OF CONTENTS Description Page Description Page 6.1 Main Board………..…………………...…….…..24 Table of Contents..……........…..1 6.2 Power Board…..…………..………….…..……..26 Important Safety Notice........……..2 6.3 Key Board………………………..……..………..32 Revision List…………………………………………………3...
  • Page 2: Important Safety Notice

    All manuals and user guides at all-guides.com Important Safety Notice Proper service and repair is important to the safe, reliable operation of all Haier Company Equipment. The service procedures recommended by Haier and described in this service manual are effective methods of performing service operations.
  • Page 3: Revision List

    All manuals and user guides at all-guides.com Revision List Revision Version Release Date Customer Model Model Instructions 48LTV3002 E199AANRW4H16N Sep.10,2010 Initial release 55LTV3002 E229GANRW4H16N...
  • Page 4: General Specification

    All manuals and user guides at all-guides.com 1. General Specification...
  • Page 5: Operating Instructions

    All manuals and user guides at all-guides.com 2. Operating Instructions 2.1 The Use of Remote Control...
  • Page 6: To Use The Menus

    All manuals and user guides at all-guides.com 2.2 To Use the Menus...
  • Page 7 All manuals and user guides at all-guides.com...
  • Page 8 All manuals and user guides at all-guides.com...
  • Page 9 All manuals and user guides at all-guides.com...
  • Page 10: Front Panel Control Knobs

    All manuals and user guides at all-guides.com 2.3 Front Panel Control Knobs...
  • Page 11: How To Connect

    All manuals and user guides at all-guides.com 2.4 How to Connect...
  • Page 12: Input/Output Specification

    All manuals and user guides at all-guides.com 3. Input/Output Specification 3.1 Input Signal Connector D-SUB Pin No. Description Pin No. Description Red Video No Pin Green Video Sync Ground Blue Video Serial Data for DDC Ground H. Sync Red Ground V.
  • Page 13 All manuals and user guides at all-guides.com 3.2 Input Signal Timing...
  • Page 14: Mechanical Instructions

    All manuals and user guides at all-guides.com 4. Mechanical Instructions Step1. Remove the STAND BASE. Step2. Remove the REAR COVER.
  • Page 15 All manuals and user guides at all-guides.com Step3. Remove the POWER BOARD, MAIN BOARD and separate the PANEL and BEZEL. Step4. Separate the PANEL and MAIN FRAME.
  • Page 16 All manuals and user guides at all-guides.com Step5. Remove the KEY BOARD, IR BOARD and SPEAKERS.
  • Page 17: Repair Flow Chart

    All manuals and user guides at all-guides.com 5. Repair Flow Chart 1. No power No power (LED “Off”) Check the AC input and Power “On” the power is “ON”? Power board output=5V? Replace the power board Check the IR board and LED Replace the IR board Replace the main board...
  • Page 18 All manuals and user guides at all-guides.com 2. Can’t start Can’t start(LED red) Replace the power board Power board output=12/16V? Replace the key board Check the power key is under control? Replace the IR board Check the IR receiver is normal? Replace the main board Replace the Power board...
  • Page 19 All manuals and user guides at all-guides.com 3. Abnormal Display Abnormal Display Reset the source Check the source Enter factory mode to do “EEPROM initial”&“Reset” Replace the main board Check the main board Check the LVDS cable Replace the LVDS cable Check the panel Replace the panel...
  • Page 20 All manuals and user guides at all-guides.com 4. No display No display (LED white) Check TV is under control and power Replace the main board on/off by remote control and power key? Check the backlight is “On”? Check the LVDS cable Check the B/L signal is available? Reinsert or replace the...
  • Page 21 All manuals and user guides at all-guides.com 5. Sound problem No sound or sound abnormal Check the audio source connection and the TV system are correct? Reinsert the audio cable or change the TV system Check the TV is muted, adjust the volume or enter the menu to reset? Enter factory mode to do “Reset”...
  • Page 22 All manuals and user guides at all-guides.com 6. Remote control malfunction Remote Control malfunction Check the remote control battery is Replace the battery not properly placed or no power? Use the other remote controls Replace the remote control Whether the IR board is Replace the IR board abnormal? Replace the main board...
  • Page 23 All manuals and user guides at all-guides.com 7. OSD is unstable or can’t work normally OSD is unstable or can’t work normally Key board connected properly? Reconnect the key board Replace the button function Buttons are OK? Replace the key board Key board is OK? Enter factory mode to do “Reset”...
  • Page 24: Pcb Layout

    All manuals and user guides at all-guides.com 6. PCB Layout 6.1 Main Board 715G3365M03000004K...
  • Page 25 All manuals and user guides at all-guides.com...
  • Page 26: Power Board

    All manuals and user guides at all-guides.com 6.2 Power Board 48LTV3002 715G2783 3 7...
  • Page 27 All manuals and user guides at all-guides.com...
  • Page 28 All manuals and user guides at all-guides.com...
  • Page 29 All manuals and user guides at all-guides.com 55LTV3002 715G2783 2 7...
  • Page 30 All manuals and user guides at all-guides.com...
  • Page 31 All manuals and user guides at all-guides.com...
  • Page 32: Key Board

    All manuals and user guides at all-guides.com 6.3 Key Board 715G3303 1 6.4 IR Board 715G3540R1A000004M...
  • Page 33: Adjustment/Fw Upgrade/Edid

    All manuals and user guides at all-guides.com 7. Adjustment/FW Upgrade/EDID 7.1 Adiustment It’s no need to adjust the white balance for this model. 1. Enter into the factory mode: Turn on the TV, press MENU key with remote control, then press number key 1 9.
  • Page 34 All manuals and user guides at all-guides.com 7.2 FW Upgrade Step1. ISP instruction (Himax tool number: 715GT118-B) Step2. Setup ISP tool.
  • Page 35 All manuals and user guides at all-guides.com Step3. The USB tool connect to computer, computer will prompt you to install USB drivers, Weltrend board select: \ Drivers \ WelTrend Usb2IIC directory of drive, the installation.
  • Page 36 All manuals and user guides at all-guides.com...
  • Page 37 All manuals and user guides at all-guides.com Step4. ISP Tool Flash Update step...
  • Page 38 All manuals and user guides at all-guides.com...
  • Page 39 All manuals and user guides at all-guides.com...
  • Page 40 All manuals and user guides at all-guides.com Step5. Programming Step6. Verify FW version.
  • Page 41 All manuals and user guides at all-guides.com 7.3 The Writing VGA & HDMI EDID Step1. Ready for writing EDID Tool: 715G2005-C2 Cable: a LPT cable, a VGA cable, a DVI to HDMI cable and a 12V DC adapter. 715G2005-C2 male to male LPT cable VGA cable DVI to HDMI cable Step2.
  • Page 42 All manuals and user guides at all-guides.com Step3. Install TPV edid tool. 1. Double click this icon to install. 2. Double click this icon to run. This red frame contents detail information in VGA EDID file. 1. Click here to open this interface. 4.
  • Page 43 All manuals and user guides at all-guides.com Step4. Click “FPD” to open the another interface as follows. 1. Tick LPT1 2. Click here to read file as figure 4.2 2. Click “open” to read the “.dat” file. figure 4.2...
  • Page 44 All manuals and user guides at all-guides.com Step5. Click “write EDID” to write EDID. If display “NG” in the yellow blank, which represent writing failly. Please check the whether the connection of tool and cables is nomal and retry. Another way is to change a new ISP board and retry.
  • Page 45 All manuals and user guides at all-guides.com Step6. Write HDMI EDID. Connection for writing HDMI EDID. Connect to TV HDMI port. Connect to PC LPT port. 12V DC input Notice: When writing HDMI EDID, the TV must be AC on, or the process can’t continue, and will prompt “NG”...
  • Page 46: Block Diagram

    All manuals and user guides at all-guides.com 8. Block Diagram HDMI EDID(U301) SDA,SCL Himax M2D U405 AV Line Out CN301 CVBS_O SCART CVBS Out RX0,RX1,RX2,RXCLK HDMI (Option) HDMI_RXA0,A1,A2,CLK (CN106&CN105) CN104 Y,Pb,Pr AINA2,AINB2,AINC2,SOG2 YPbPr CVBS AINA5 CN107 AV&S-VIDEO AINB4,AINC4 R,B,G,H,V AINA1,AINB1,AINC1 CN102 HSYNC,VSYNC RS232...
  • Page 47 All manuals and user guides at all-guides.com 5VSB VCC3 1084-33 1077mA 5VSB U701 VCC3AD VCC3AD VCC3IO / V33LV VCC3 VCC3IO / V33LV MX25L4005AM2C HX6201 U402 U405 822mA AVDD18 / VCCLV AVDD18 / VCCLV 1084_1.8 VCC18_CORE HX6202A U708 U405 281mA V33ADC / VCCADC / VDDA33 V33HDMI / VCCADC / VDDA33 5VSB VCC5...
  • Page 48: Wiring Diagram

    All manuals and user guides at all-guides.com 9. Wiring Diagram Panel To Panel LVDS Cable 12 Pin 11 Pin CN701 CN902 2 Pin CN802 30 Pin CN404 2 Pin HX6201-A06MLAG CN801 U405 Board Scaler IC Power Board 2 Pin CN603 CN804 2 Pin CN803...
  • Page 49: Schematic Diagram

    All manuals and user guides at all-guides.com 10. Schematic Diagram 10.1 Main Board 715G3365M03000004K 03) Power 5VSB 33A3802-12B R717 CONN V12_ADP 10K OHM 1/10W +12V R718 R719 C714 C715 10K OHM 1/10W 0.1uF 50V 470uF/16V V_IPWM R720 VCC3 VCC12 BL_ADJ C723 For 26"...
  • Page 50 All manuals and user guides at all-guides.com 04) HDMI U302 RXACLKN_M2 9 OUT1 RXACLKP_M2 9 OUT2 RXA0N_M2 OUT3 RXA0P_M2 OUT4 CN301 RXACLKN_M2 TMDSC- RXACLKP_M2 TMDSC+ RXA0N_M2 TMDSD0- RXA0P_M2 U303 TMDSD0+ RXA1N_M2 TMDSD1- OUT1 RXA1N_M2 RXA1P_M2 RXA1P_M2 TMDSD1+ OUT2 RXA2N_M2 RXA2N_M2 TMDSD2- OUT3 RXA2P_M2...
  • Page 51 All manuals and user guides at all-guides.com 05) Tuner 5V for Tuner Add Thermal Pad +5VT R202 U202 FB202 +5VT VCC12 AZ1117D-5.0-E1 300 OHM TUN_AUD TUN_AUD R203 47 OHM 1/2W INPUT OUTPUT R204 R205 47 OHM 1/2W Put short symbol near by 0 OHM 1/10W ADJ/GND C204...
  • Page 52 All manuals and user guides at all-guides.com 06) VGA/YPbPr Connector FB101 FB604 80 OHM R103 UART_RX 100R 1/10W 5% 33R 1/10W 5% R102 390 OHM 1/10W VGA_VIN VSYNC R/G/B : 75 Ohm Trace C102 SOGAIN VSY NC ZD602 100pF R105 390 OHM 1/10W RED_GND R104 RGB_G1...
  • Page 53 All manuals and user guides at all-guides.com 07) Scart SV/AV L101 R139 AVI/Y 1 R140 C132 SCR_Y 0.1uF 50V 100R 1/10W 5% 2.2uH 18R OHM 1/16W 5% Csync/CVBS/ D116 C134 C135 S-Video(Y) CN101 SP115 220pF R142 AVI/Y 1 56 OHM 1/16W AV_G1 Input SCA1I_L...
  • Page 54 All manuals and user guides at all-guides.com 08) M2D HDMI/Analog I/O HDMI 3.3V POWER V33ADC V33_ADC V33ADC1 FB302 V33HDMI 300 OHM AVDD18 V18_33HDMI V33HDMI V33ADC_PLL C305 C306 10uF/16V 0.1uF 50V C301 0.01UF25V V33ADC_PLL C307 0.1uF 50V C311 R314 0.1UF16V U405A FILT 1K621/10W FILT...
  • Page 55 All manuals and user guides at all-guides.com 09) M2D Audio 5VSB V33AUD SIF1+ VCC3AD VCC3 R602 0 OHM 1/16W C602 0.1uF 50V SIF1- R603 FB606 V33_AUD 10K OHM 1/10W AUDIO 1.8V POWER VCC3AD FB602 300 OHM V33AUD R604 C603 U405B 0.1uF 50V C663 C661...
  • Page 56 All manuals and user guides at all-guides.com 10) M2D MCU VCC3 IRDAT IRDAT 5VSB VCC3 VCC3 Q402 5VSB C402 PMBS3906 0.22uF R402 Q403 C403 4.7K OHM 1/16W PMBS3906 FB402 150OHM IRVCC 0.22uF IR_D IRVCC C423 U404 R403 FB403 150OHM 10uF/16V 4.7K OHM 1/16W IR_D U402...
  • Page 57 All manuals and user guides at all-guides.com 11) M2D LVDS 5VSB PN swap for layout R510 10K OHM 1/10W CN407 R523 10K OHM 1/10W R522 10K OHM 1/10W R518 10K OHM 1/10W R519 10K OHM 1/10W R526 10K OHM 1/10W R512 10K OHM 1/10W U405C...
  • Page 58 All manuals and user guides at all-guides.com 12) Component and USB R273 0R05 1/10W 5% PR_IN0 R209 FB222 VCC5 VBUS C265 R263 C255 USB_DM C263 CN703 USB_DP Q215 PR2_IN R211 L209 R277 R261 R294 C264 C253 ZD201 ZD202 R280 FOR EMI R274 0R05 1/10W 5% Y _IN0...
  • Page 59: Power Board

    All manuals and user guides at all-guides.com 10.2 Power Board 48LTV3002 715G2783 3 7 R918 L904 100 OHM 1/4W C921 3.5uH R919 +12V 100 OHM 1/4W R920 0.001uF 100 OHM 1/4W R940 ZD920 C918 150 OHM +-5% RLZ13B 1000uF/25V C920...
  • Page 60 All manuals and user guides at all-guides.com CN801 C819 +12V R805 100R 1/10W 5% C820 CN802 ON/OFF JUMPER CONN D801 PT802 Q805 POWER X'FMR R833 0 OHM R806 100R 1/10W 5% L801 ZD802 RLZ5.6B C816 ZD803 D802 10pF/6KV RLZ5.6B AO4616 R803 R804 5K1 1/10W C824...
  • Page 61 All manuals and user guides at all-guides.com 55LTV3002 715G2783 2 7 R918 100R 1/4W C921 0.001uF F902 R919 +16V T901 100R 1/4W JUMPER C917 C918 L904 POWER X'FMR 1000uF25V 1000uF25V 3.5uH ZD920 R940 80TL22T 5 L RLZ18B R920 C920 150R 2W 100R 1/4W C922 0.1uF...
  • Page 62 All manuals and user guides at all-guides.com PT802 CN801 CONN C819 68pF/3KV R805 +16V 100R 1/10W C820 CN802 ON/OFF D801 68pF/3KV CONN Q805 AO4616 PT801 POWER X'FMR R806 LL4148 100R 1/10W L801 D802 C816 22pF/6KV 57T 600517 R804 ZD802 R803 ZD803 C824 5K1 1/10W...
  • Page 63: Key Board

    All manuals and user guides at all-guides.com 10.3 Key Board 715G3303 1 SW01 VOL+ TACT SW FWRD H1.5MM 20K OHM 1% 1/10W SW02 VOL- TACT SW FWRD H1.5MM 8.2K1/10W 1% SW03 3V3_STB TACT SW FWRD H1.5MM 4.32K 1% 1/10W CN01 SW04 PWR-SW FUNC_KEY...
  • Page 64: Ir Board

    All manuals and user guides at all-guides.com 10.4 IR Board 715G3540R1A000004M LED01 BLUE CONN 081T 14 24 EL LED_R LED_B IRRV VOUT 15K OHM 1/10W GP18C38BAE CN01 0.1uF/16V NC/4.7uF/16V 033T8032 5F HR GND PIN GND PIN...

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