Haier LT32F6 Service Manual
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Haier LT32F6 Service Manual

32″
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32"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
3.Input/Output Specification....................................9
4.Mechanical Instructions......................................12
5.Repair Flow Chart ...........................................16
6.PCB Layout ...................................................23
6.1 Main Board..................................................23
6.2 Power Board................................................27
6.3 Key Board....................................................30
6.4 IR Board......................................................30
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

Table of Contents

Page
Description
6.5 LED Board................................................31
7.Adjustment..................................................32
7.1 WB Adjustment..........................................32
7.2 FW Upgrade.............................................33
7.3 The Writing VGA & HDMI EDID....................38
8.Block Diagram...................................................43
9.Wiring Diagram.................................................45
10.Schematic Diagram.....................................46
10.1 Main Board..............................................46
10.2 Power Board............................................59
10.3 Key Board...............................................61
10.4 IR Board.................................................62
10.5 LED Board...............................................63
SAFETY NOTICE
1
Haier LT32F6
Horizontal Frequency
30-65 KHz
Page
Table of Contents
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Summary of Contents for Haier LT32F6

  • Page 1: Table Of Contents

    32″LCD TV Haier LT32F6 Service Service Service Horizontal Frequency 30-65 KHz Table of Contents Description Page Description Page 6.5 LED Board……………………..……..………..31 Table of Contents..……........…..1 7.Adjustment……………….……….…………..….32 Important Safety Notice........……2 7.1 WB Adjustment………...……………..……...….32 Revision List……………………………………………..3 7.2 FW Upgrade.………………………………...…..33 1.General Specification.........………..4 7.3 The Writing VGA & HDMI EDID….………..…38 2.Operating Instructions…………………….……...…...5...

  • Page 2: Important Safety Notice

    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. Some of these service operations require the use of tools specially designed for the purpose.

  • Page 3: Revision List

    Revision List Version Release Date Revision Instructions Model Mar.24,2011 Initial release E32AG2NBWNH62N...

  • Page 4: General Specification

    1. General Specification Model No. LT32F6 DISPLAY Aspect Ratio 16:9 Resolution 1366 x 768 ENHANCEMENT Sound Output (RMS Watts) 2 x 10 W Sound Mode Speech, Personal, Music Picture Formats Auto, Normal, Wide, Zoom 1, Zoom 2, Native (only in HDMI mode)

  • Page 5: Operating Instructions

    2. Operating Instructions Pls refer to the user manual attached in the service manual.
  • Page 6 Press the “menu” key and the number key “XXXXXX” to enter hotel mode. “XXXXXX” is the password request by Customer (6 numbers). ************ HAIER password is Menu + 100108 ************* 2. Starting the hotel mode If you want to turn on the hotel mode, please press the“>”key or the“<”key on the remote control to set the hotel mode on！...
  • Page 7 5) Remote control operation [RC BUTTON] Option “RESPOND”,“NORESPOND”or“LIMITED” Default RESPOND RESPOND：The remote control is enabled. ・ NO RESPOND：The remote control is disabled. The POWER key is also ・ Function disabled. LIMITED：only (POWER, VOLUME ( / ), CHANNEL ( / ) , ATV,DTV ∧...
  • Page 8 10) Input fixed [INPUT MODE FIXED] Option “VARIABLE”“FIXED”,“AC CTRL”or“AC/RC CTRL” Default VARIABLE 1. “VARIABLE”: The input source can be changed when power on. 2. “FIXED”: The input source will be changed to the “INPUT MODE START” setting value when power on. Function 3.

  • Page 9: Input/Output Specification

    3. Input/Output Specification 3.1 Input Signal Connector D-SUB Pin No. Description Pin No. Description +5V (supply from PC) Green Sync GND Blue Bi-directional data (SDA) H-Sync Red GND V-sync (vclk) Green GND Data clock (SCL) Blue GND HDMI Pin No. Description Pin No.
  • Page 10 Half Scart Pin No. Pin No. Signal Signal Audio output B ( right ) Comms data 1 Audio input B ( right ) Ground Audio output A ( left ) Ground ( blanking ) Ground (audio ) Chorma input Ground Audio input A ( left ) Ground ( video input &...
  • Page 11 HDMI 1920X1080P 1920X1080P 1920X1080i 1280X720P 720X576P 720X576i Item 50Hz 25Hz 50Hz 50Hz 50Hz 50Hz 148.5MHz 74.25MHz 74.25MHz 74.25MHz 27 MHz 13.5MHz Pixel rate (6.734 ns) (13.468 ns) ( 13.468ns ) (13.468 ns) (37.037 ns) ( 74.074 ns ) Horizontal 56.25 KHz 28.125 KHz 28.125 KHz 37.5 KHz...

  • Page 12: Mechanical Instructions

    4. Mechanical Instructions Front View Back View Step1. Remove the STAND and BASE. Step2. Remove the REAR COVER.
  • Page 13 Step3. a. Disconnect all the WIRES/CON; b. Remove MAIN and POWER BOARD. c. Remove the main board SIDE BKT. Step4. Remove the BKT P_BD. BKT P_BD...
  • Page 14 Step5. Remove the BOLT and SCREW-STOPPER. Bolt SCREW- STOPPER Step6. Remove the DECO LENS3.
  • Page 15 Step7. Separate the BEZELand PANEL.

  • Page 16: Repair Flow Chart

    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 17 2. Can’t start Can’t start (LED red) Replace the power board Power board output＝24V? 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 18 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 19 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 LVDS cable Replace main board...
  • Page 20 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 21 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 22 7. OSD is unstable or can’t work normally OSD is unstable or can’t work normally Reconnect the key board Key board connected properly? Replace the button function Buttons are OK? Replace the key board Key board is OK? Enter factory mode to do “Reset” Replace the main board...

  • Page 23: Pcb Layout

    6. PCB Layout 6.1 Main Board 715G3805M01001005K...

  • Page 27: Power Board

    6.2 Power Board 715G3770P02W20003S...

  • Page 30: Key Board

    6.3 Key Board 715G4188K01000004S 6.4 IR Board 715G4189R1A000004S...

  • Page 31: Led Board

    6.5 LED Board 715G4190T01000004S...

  • Page 32: Adjustment

    7. Adjustment 7.1 WB Adiustment It needs WB adjustment (Ypbpr’s Normal/Warm/Cool) only for this model. WB adjustment Method: 1. Enter into the factory mode: Turn on the TV, press RC key ‘MENU’+ ‘1’ + ‘9’ + ‘9’ +’9’. 2. Take Ypbpr_Normal adjustment for example: Ypbpr Normal.

  • Page 33: Fw Upgrade

    7.2 FW Upgrade Haier MTK5363 FW upgrade with USB SOP Step 1: Ready for F/W Upgrade 1.1 Change the software file name to ” upgrade.pkg” ,eg: Before change: After change: 1.1 Prepare a USB memory (The file system of USB memory must be FAT16 or FAT 32).
  • Page 34 2.3. Press the power key on the Remote Control or the right side of TV to turn on TV.                                            ...
  • Page 35 Figure 2.7 2.5. TV will upgrade automatically. Note: When Upgrade on the process, please don’t Power-Off! (Figure 2.8) Figure 2.8 2.6. When upgrade 100% and prompt for Upgrade Success info ,remove the USB Drive and press “power” key to reset TV (Figure 2.9) Figure 2.9...
  • Page 36 Step 3: Check the F/W version and reset to default. 3.1 Press “MENU”+”1”+”9” +”9” +”9” key rapidly on the Remote control to enter the factory mode (Figure 3.1). Do the following steps rapidly: 1. Press “MENU/ENTER”; 2. Press”1”+”9” +”9” +”9”; Figure 3.1 3.2.
  • Page 37 3.3. If the FW version is correct, please do factory reset. Choose item 30 “Reset” and press “ok” key to do factory reset as figure 3.3. Figure 3.3 Notice: You can also check the FW version in user model by pressing “MENU/EXIT” on remote control, as figure 3.4. Figure 3.4 3.4.

  • Page 38: The Writing Vga & Hdmi Edid

    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 39 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. Click here to Read the file 3. Click anyone file to add VGA EDID file.
  • Page 40 Step4. Click “FPD” to open another interface as follows. 1. Tick LPT1 2. Click here to read file as figure 4.2 Figure 4.2 2. Click “open” to read the “.dat” file.
  • Page 41 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 42 Write fail. Step6. Write HDMI EDID. Connection for writing HDMI EDID. Connect to PC LPT port. Connect to TV HDMI port. 12V DC input The other steps refer to the writing VGA EDID sop.

  • Page 43: Block Diagram

    8. Block Diagram...

  • Page 45: Wiring Diagram

    9. Wiring Diagram 095G801313X921 Panel HARNESS 13P-13P 150mm Panel 095G801840X535 HARNESS 40P-40P 320MM 13 Pin 2 Pin CN902 CN802 CN701 40 Pin 4 Pin CN408 CN601 MT5363LICG/B (U401) Main Board Scaler IC 2 Pin CN801 Power Board Board CN401 AC IN 2 Pin CN901 CN016...

  • Page 46: Schematic Diagram

    10. Schematic Diagram 10.1 Main Board 715G3805M01001005K 04. POWER-1 EU MT5363 - 4 LAYERS +5V_STB +5V_SW +24V 12,15 +24V STB_PWR5V FB701 120R/3000mA +5V_STB +12V/5V Q704 5,10,12,15 +12V/5V +5V_STB 5,8,10,15 +5V_STB BRIGHT_ADJ: +5V_SW 8,10,11,12,13,14,15,16 +5V_SW FB702 120R/3000mA Normal:Max:+3V3, Min:0V DV18_DDR R708 DV18_DDR DV11 DC POWER INPUT...
  • Page 47 05. POWER-2 +5V_STB +12V/5V PANEL_VCC +12V/5V 4,10,12,15 +12V/5V +5V_STB Panel VCC=12V 4,8,10,15 +5V_STB +5V_STB DV33SB +5V_SW R751 R753 4,8,10,11,12,13,14,15,16 +5V_SW NC/0R05 4A 1/4W 0R05 4A 1/4W Q750 +5V1_TUN +5V1_TUN +5V_TUNER U751 +5V_TUNER G903T63UF DV33 VOUT 4,6,7,8,10,11,13,14,15,16 DV33 AV33 4,8,14,16 AV33 C768 DV33SB 10,13,14,15,16...
  • Page 48 06. TUNER FB1007 EC080-35 も础 NUTUNE FH2607 120R/3000mA FB1006 220R/2000mA +5V_TUNER RF_AGC_TUNER Tuner R1004 Q1001 R1024 C1003 C1009 FB1007 R1047 R1048 4,8,10,11,12,13,14,15,16 +5V_SW +5V_SW LNA_ON/OFF TU102 +5V_T1 Yes NC DV12 DV12 NC/TUNER C1009 C1003 DV18_DDR DV18_DDR 1N 50V 100N 16V C1048 C1001 C1000...
  • Page 49 07. MT5363 BYPASS/TRAP. 4,5,8,10,15 +5V_STB +5V_STB 4,8,10,11,12,13,14,15,16 +5V_SW +5V_SW 5,10,13,14,15,16 DV33SB DV33SB DV18_DDR DV18_DDR 4,5,6,8,10,11,13,14,15,16 DV33 DV33 4,8,14,16 AV33 AV33 5,8,9,14,16 AV12 AV12 DV11 DV11 4,5,6,8,9,10,11,12,13,14,15,16 U401A FB4000 AV12 AVDD1V25_PLL AVDD1V25_PLL AG30 DVSS AVDD12_APLL AH33 120R/3000mA DVSS AVDD12_ADCPLL AG32 HW Strap Setting DVSS AVDD12_SY SPLL AB15...
  • Page 50 08. MT5363 PERIPHERAL/USB2.0 4,5,10,15 +5V_STB +5V_STB 4,10,11,12,13,14,15,16 +5V_SW +5V_SW U401F Near IC Near IC 5,10,13,14,15,16 DV33SB DV33SB AVDD3V3_REFP_AADC VGA_L_IN AA36 AVDD33_REF_AADC AIN6_L_AADC AVDD3V3_ADAC0 VGA_R_IN AF33 Y 37 AV33 AV33 AVDD33_ADAC0 AIN6_R_AADC AVDD3V3_ADAC1 4,5,6,7,10,11,13,14,15,16 DV33 DV33 AVDD33_ADAC1 AVDD3V3_AADC Y 31 R4056 AVDD3V3_AADC AVDD3V3_ADAC0 4,14,16...
  • Page 51 09. DDR2 MEMORY 4,5,8,10,15 +5V_STB +5V_STB DDR2 Interface 4,8,10,11,12,13,14,15,16 +5V_SW +5V_SW 5,10,13,14,15,16 DV33SB DV33SB DV18_DDR DV18_DDR U402 RP4100 U403 RP4104 56R 1/16W 5% 56R 1/16W 5% 4,5,6,7,8,10,11,13,14,15,16 DV33 DV33 RDQ0 1_A0 1_A8 RDQ16 2_A0 2_CAS# RCAS# 4,8,14,16 AV33 AV33 RDQ1 1_A1 1_A13 RA13...
  • Page 52 10. FLASH/JTAG/UART/IR/RS232 4,5,8,15 +5V_STB +5V_STB CN411 4,8,11,12,13,14,15,16 +5V_SW +5V_SW 512KB Nor Flash for Boot Code DV33 U401C NEAR IC 5,13,14,15,16 DV33SB DV33SB U4052 DV33SB DV33SB +12V/5V 4,5,12,15 +12V/5V +12V/5V AVDD3V3_REG ORESET# POCE0# AN24 AL22 AVDD33_VGA_STB ORESET# OPWRSB AVDD3V3_REG PDD0 DV33 AL24 AL20 R4194 4.7K1/16W...
  • Page 53 11. CI CARD U401H SY S_RESET M_OPWM0 CI_PWR_EN OPWM0 GPIO0 LVDSCTRL1 M_OPWM1 CI_OCP OPWM1 GPIO1 BL_DIMMING RF_AGC_TUNER 4,5,8,10,15 +5V_STB +5V_STB OPWM2 GPIO2 M_CI_INDATA1 GPIO3 CI_A14 CLOSE TO CI CONNECTOR 4,8,10,12,13,14,15,16 +5V_SW +5V_SW GPIO4 M_CI_INDATA2 GPIO5 CI_WE# 5,10,13,14,15,16 DV33SB DV33SB GPIO6 M_CI_INDATA3 GPIO7 CI_IREQ#...
  • Page 54 12. SCART1/SCART2 4,5,8,10,15 +5V_STB +5V_STB 4,15 +24V +24V 4,8,10,11,13,14,15,16 +5V_SW +5V_SW 5,10,13,14,15,16 DV33SB DV33SB D1056 BAS316 +12V +12V +5V_SW 4,5,10,15 +12V/5V +12V/5V NEAR IO CONNECTOR NEAR MT5363 4,5,6,7,8,10,11,13,14,15,16 DV33 DV33 R1065 4,8,14,16 AV33 AV33 SCT1_AUR_IN SCART1_R_In 5,7,8,9,14,16 AV12 AV12 30KOHM 1/16W +/-5% DV11 DV11 D1054...
  • Page 55 13. YPBPR/VGA IN/SPDIF OUT NEAR YPBPR CONNECTOR NEAR MT5363 4,5,8,10,15 +5V_STB +5V_STB +12V +12V 4,8,10,11,12,14,15,16 +5V_SW +5V_SW +5V_SW YPbPr L/R INPUT D1150 BAS316 SMD/0402 NEAR YPBPR CONNECTOR 5,10,14,15,16 DV33SB DV33SB SMD/0402 C1153 1.5nF 50V +5V_SW SOY1 4,12,15 +24V +24V R1156 0R05 1/16W D1153 4,5,6,7,8,10,11,14,15,16...
  • Page 56 14. HDMI1/HDMI2/HDMI3 INPUT EDID_WEN 7,10,13 EDID_WEN +5V_SW HDMI_SW_CTRL1 HDMI_SW_CTRL1 HDMI_SW_CTRL2 AV12 AVDD1V25_HDMI HDMI_SW_CTRL2 R534 U401E PWR5V_3 PWR5V_3 D511 0R05 1/10W PWR5V_1 PWR5V_1 BAT54C AVDD1V25_HDMI AP11 AR16 USB_DP USB_DP AVDD12_HDMI RX1_C AU16 C503 USB_DM RX1_CB USB_DM AVDD3V3_HDMI AM13 AP17 100N 16V AVDD33_HDMI RX1_0 AV12...
  • Page 57 15. AUDIO AMP/HEADPHONE OUT AUDIO_VDD Line_Out_R Line_Out_R Line_Out_L Line_Out_L HP_Out_L HP_Out_L HP_Out_R U601 HP_Out_R AMP_MUTE AMP_MUTE C633 SP_AMP_MUTE SP_AMP_MUTE 220UF 50V HP_DET# Thermal Pad HP_DET# OFF_MUTE SMD EEC100 12,13 OFF_MUTE HP_SC_MUTE 12,13 HP_SC_MUTE Shutdown DV33 PVCCL 4,5,6,7,8,10,11,13,14,16 DV33 +12V/5V 4,5,10,12 +12V/5V DV33 +24V...
  • Page 58 16. LVDS OUTPUT FB402 120R/3000mA NEAR CN408 PANEL_VCC 4,5,8,10,15 +5V_STB +5V_STB FB403 120R/3000mA 4,8,10,11,12,13,14,15 +5V_SW +5V_SW Panel_12V_5V 5,10,13,14,15 DV33SB DV33SB DV33 DV33 C407 4,5,6,7,8,10,11,13,14,15 DV33 DV33 R414 150UF 25V 4,8,14 AV33 AV33 10KOHM +-5% 1/8W 5,7,8,9,14 AV12 AV12 EC080-35 も础 NC/CONN R402 R417...

  • Page 59: Power Board

    10.2 Power Board 715G3770P02W20003S D904 B+_390V IN5408 FB901 FB902 D902 R948 FMNS-1106S 0.1 ohm R993 T901 BEAD BEAD R991 100K 1/4W POWER X'FMR L906 100K 1/4W R950 D907 C925 C932 47 OHM 1/4W 310uH C910 C920 470PF1KV 0.1NF2KV 1uF/520V 100uF M 450V R994 R801 R992...
  • Page 60 R801 0.1 ohm B+_390V C806 R801 15PF/3KV CN801 C805 2.2U25V C801 D803 1uF/450V R804 T802 51K +-5% 1/8W R805 Q801 C807 51K +-5% 1/8W 1N5 50V D801 SCS0520P AOTF12N50 CONN SCS0520P R816 10K 1/8W T801 POWER X'FMR CN802 R806 100 OHM 1/8W 33KOHM +-1% 1/8W R802 POWER X'FMR...

  • Page 61: Key Board

    10.3 Key Board 715G4188K01000004S CN016 VOL- VOL+ KEY 1 C024 CONN C023 100N 50V 100N 50V ----><----| ----><----| ----><----| ----><----| C019 C020 C021 C022 NC/100N 50V NC/100N 50V NC/100N 50V NC/100N 50V R016 R017 R018 R019 11KOHM +-5% 1/10W 4K3 1/10W 5% 1.8K OHM 1/10W 5% 470 OHM 1/10W POWER...

  • Page 62: Ir Board

    10.4 IR Board 715G4189R1A000004S To LED board. LED_B: LED_R: Normal: High Normal: Low CN002 Stand_by: Low Stand_by: High LED_B_OUT DV33SB LED_R_OUT CONN R003 LED_B_OUT 100 OHM 1/10W DV33SB C003 CN001 100N 50V LED_B R001 LED_R LED_R_OUT 100 OHM 1/10W DV33SB CONN R006 R005...

  • Page 63: Led Board

    10.5 LED Board 715G4190T01000004S LED_B: LED_R: R006 R006 Normal: High Normal: Low DV33SB 0R05 1/10W 0R05 1/10W Stand_by: Low Stand_by: High R009 R009 R001 R001 100 OHM 1/10W 100 OHM 1/10W 100 OHM 1/10W 100 OHM 1/10W LED003 LED003 LED002 LED002 LED001 LED001...

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