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Haier HL32K2 Service Manual Download Page 17

4-3. Power Supply Board

4-3-1. Function description:

To supply power for Mainboard, Panel.

4-3-2. Connector definition:

INPUT CONNECTOR

CN402

Signal name

1-2

+12V

3-4

GND

5

+5V

6

GND

7

Power ON/OFF

8

I_PWM/E_PWM

4-4. LCD Panel

CN402

Signal name

9

     I_PWM

10

  BL_ON/OFF

11

   E_PWM

CN401

Signal name

1

+24V

2

+24V

3

GND

4

GND

  Service Manual

  Model No.: HLC32K2

16

Summary of Contents for HL32K2

Page 1: ...ng 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 Haier Group 2010 Qingdao Haier Electronics Co Ltd All rights reserved Unauthorized copying and distribution is a viol...

Page 2: ...nt 4 1 3 7 Ordering Spare Parts 6 1 3 8 Photo used in this manual 6 1 4 How to Read this Service Manual 6 1 4 1 Using icons 6 Chapter 2 Specification 8 2 1 Specification List 8 2 2 External Pictures four faces 9 Chapter 3 Disassemble and Assemble 11 3 1 Remove the Stand 11 3 2 Remove the Back Cover 11 3 2 Remove the Adhesive Tape 11 3 4 Remove the Power Supply Module 12 3 5 Remove the Mainboard 12...

Page 3: ...el Controls 23 6 2 Back Panel Controls 24 6 3 Setting Up Your Remote Control 25 Chapter 7 Electrical Parts 26 7 1 Block Diagram 26 7 2 Circuit Diagram 27 7 3 Wiring Connection Diagram 44 Chapter 8 Measurements and Adjustments 45 8 1 Service Mode 45 8 1 1 How to enter into Service Mode 45 8 1 2 How to exit 45 8 2 Measurements and Adjustments 45 8 2 1 Version S N Panel Resoution 45 8 2 2 Video 46 8 ...

Page 4: ...t thing is to list up the potential hazard or risk for the service personnel to open the units and disassemble the units For example we need to describe properly how to avoid the possibility to get electrical shock from the live power supply or charged electrical parts even the power is off This symbol indicates that high voltage is present inside It is dangerous to make any king of contact with a...

Page 5: ... 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge buildup or exposure of the assembly 1 3 4 About lead free solder PbF This product is manufactured using lead free solder as a part of a movement within the consumer products industry at large to be environmentally responsible Lead free s...

Page 6: ...90 99 strength CAUTION This is a flammable mixture Unless specified otherwise in this service manual lubrication of contacts is not required Capacitors may result in an explosion hazard 5 Do not defeat any plug socket B voltage interlocks with which receivers covered by this service manual might be equipped 6 Do not apply AC power to this instrument and or any of its electrical assemblies unless a...

Page 7: ...nimize bodily motions when handling unpackaged replacement ES devices Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device 1 3 7 Ordering Spare Parts Please include the following informations when you order parts Particularly the Version letter 1 Model numbe...

Page 8: ...lation 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 guides the reader to other places in this binder or in this manual where he she will find additional information on a specific topic ...

Page 9: ...eset Channels 181 OSD Language English Franch Spanish Color System NTSC Audio System M BG I L L Audio Output Power Built in W 10W 2 Audio Output Power outer W No Total Power Input W 100W Voltage Range V AC100V 240V Power Frequency Hz 50 60Hz Time of Sleep Timer MINS 240Min Net Weight KG 11 3 Gross Weight KG 13 8 Net Dimension MM 798 230 575 Chapter 2 Specification 2 1 Specification list ...

Page 10: ...Service Manual Model No HLC32K2 9 2 2 External pictures four faces Front Side Left Side ...

Page 11: ...Service Manual Model No HLC32K2 10 Right Side Back Side ...

Page 12: ...k cover which are indicated with the circles in the picture above 3 Remove the stand 3 2 Remove the Back Cover 1 Remove the twelve screws indicated See picture right 2 Then remove the back cover from the unit 3 3 Remove the Adhesive Tape The location of the adhesive tape is shown below Remove the adhesive tape Service Manual Model No HLC32K2 11 ...

Page 13: ... the rred circles in below picture 3 6 Remove the Keypad Board 3 7 Remove the Speaker 3 8 Remove the Remote Control Remove the two screws indicated by the red circles in below picture Take out the remote control board Disconnected the coupler Remove the Mainboard Remove the two screws indicated by the red circles in below picture Service Manual Model No HLC32K2 12 ...

Page 14: ...tion of Controls and Components 4 1 Board Location No Parts number Description A Board DC1670E0102M Main Board 0090724428 B Board PI160W240X200C Power Board 4 2 Main Board AV Board Service Manual Model No HLC32K2 13 ...

Page 15: ... Pin 2 Backlight on off The system can turn on or turn off the backlight of TFT LCD Panel through the power supply unit path CNA1 Pin 1 System power on standby System board will use this pin to control system power CN1 Pin 1 Control the luminance of backlight The system can generate the PWN signal to control the strength of TFT LCD Panel s backlight through this connector CNE1 CNE2 Pin number Sign...

Page 16: ...r CON1 Pin number Signal name 1 24V 2 24V 3 GND 4 GND Speaker Connector CON2 Pin number Signal name 1 L 2 L 3 R 4 R Other connectors CNB2 to Upgrade the program of ZORAN785 U1 AND FLASH U7 Service Manual Model No HLC32K2 15 ...

Page 17: ...Mainboard Panel 4 3 2 Connector definition INPUT CONNECTOR CN402 Signal name 1 2 12V 3 4 GND 5 5V 6 GND 7 Power ON OFF 8 I_PWM E_PWM 4 4 LCD Panel CN402 Signal name 9 I_PWM 10 BL_ON OFF 11 E_PWM CN401 Signal name 1 24V 2 24V 3 GND 4 GND Service Manual Model No HLC32K2 16 ...

Page 18: ...ot used these pins are no connection Please see the Appendix III 4 for more information 5 Specific pin No 30 is used for No signal detection of system signal interface It should be GND for NSB No Signal Black during the system interface signal is not If this pin is H LCD Module displays AGP Auto Generation Pattern Pin No Symbol Description Note 1 VLCD Power Supply 12 0V 2 VLCD Power Supply 12 0V 3...

Page 19: ...Multi family Dwellings Apartments Connect to wall antenna socket Wall Antenna Socket RF Coaxial Wire 75 ohm Single family Dwellings Houses Connect to wall jack for outdoor antenna Outdoor Antenna To improve the picture quality in a poor signal area please purchase a signal amplifier and install properly If the antenna needs to be split for two TV s install a 2 Way Signal Splitter in the connection...

Page 20: ...m Operate the corresponding external equipment D Component Setup How to connect Connect the DVD video outputs COMPONENT to the Y Pb Pr jacks on the TV and connect the DVD audio outputs to the YPbPr Audio IN jacks on the TV as shown in the figure Back of VCR Back of TV Video yellow Audio left white Audio right red AV2 IN Connection Option 1 Set VCR output switch to channel 3 or 4 and then turn the ...

Page 21: ...w to use Turn on the digital set top box Refer to the owner s A manual for the digital set top box Use INPUT on the remote control to select B COMPONENT VGA or HDMI source Signal COMPONENT HDMI 480 i Yes Yes 480 p Yes Yes 720 p Yes Yes 1080 i Yes Yes 1080 p Yes Yes Connecting a digital audio output Send the TV s audio to external audio equipment stereo system via the Digital Audio Output Optical p...

Page 22: ...for a long period of time The fixed image may become permanently imprinted on the screen The synchronization input form for Horizontal and Vertical frequencies is separate Resolution Mode Resolution Frame frequency Hz VGA 640s480 60 Hz SVGA 800s600 60 Hz 75 Hz XGA 1024s768 60 Hz 75 Hz HDMI and DVI input When the source device Blu Ray player DVD player or Set Top Box supports HDMI How To Connect Co...

Page 23: ...en you connect headphones to the system Power source TO USE AC POWER SOURCE Use the AC polarized line cord provided for operation on AC Insert the AC cord plug into a standard polarized AC outlet Note Never connect the AC line cord plug to other than the specified voltage Use the attached power cord only If the polarized AC cord does not fit into a non polarized AC outlet do not attempt to file or...

Page 24: ...ls To scan quickly through channels press and hold down either In the MENU screen these buttons serve as up down buttons 5 POWER Press to turn on and off theTV 6 USB input Connect a USB flash drive to view MPEG2 videos JPEG images or listen to MP3 songs 7 Av2 AUDIO IN Connect the audio L R cables from the video signal source to these jacks 8 AV2 VIDEO IN Connects the composite video cable from an ...

Page 25: ...sed digital video 4 PC Audio In Connect the audio L R cables from a computer to this jack 5 PC Video In Connect a video cable from a computer to this jack 6 VIDEO In Connects the video signal from a video device 7 Component Video In Connect a component video device to these jacks 8 AUDIO In Connect the audio L R cables from the video signal source to these jacks 9 COMPONENT AUDIO In Connect the au...

Page 26: ...mer option A USB Press to switch input source to USB in B MTS SAP Selects MTS sound Mono Stereo and SAP in Analog mode Change the audio language in DTV mode C GUIDE Press to display the guide when you are watching analog or digital channels D CCD closed caption Select a closed caption E HDMI Press to select a device connected to the HDMI input F PC Press to select the computer connected to theVGA ...

Page 27: ...Chapter 7 Electrical Parts 7 1 Block Diagram 7 Electrical parts 7 1 Block diagram 7 2 Circuit Diagram MTK5305 TA5708 Speaker Service Manual Model No HLC32K2 26 ...

Page 28: ...03 SMD AR264 5 1K_1 R0603 SMD ACB442 0 1uF ACB442 0 1uF AU61 AX1212 AP1122 AU61 AX1212 AP1122 GND 1 OUT 2 IN 3 AC222 0 1uF AC222 0 1uF AR1830 0 AR1830 0 AC226 10uF 0805 AC226 10uF 0805 AR265 2 2K AR265 2 2K AFB86 80 R 100mHz AFB86 80 R 100mHz AL28 10uH 3A AL28 10uH 3A 1 2 AC224 10nF AC224 10nF AR1867 100K AR1867 100K AFB87 80 R 100mHz AFB87 80 R 100mHz AFB75 80 R 100mHz AFB75 80 R 100mHz AEMC1 EMC...

Page 29: ..._1 R0603 SMD SPR6 180_1 R0603 SMD SPR9 0 R0603 SMD SPR9 0 R0603 SMD SPC2 NS 0 1uF SPC2 NS 0 1uF SPU1 G1117 adj SPU1 G1117 adj ADJ GND 1 OUT 2 IN 3 SPC8 47uF 16v SPC8 47uF 16v SPU4 AX1117EJ adj SPU4 AX1117EJ adj GND 1 OUT 2 IN 3 SPC15 47uF 16v SPC15 47uF 16v SPC17 NS 47uF 16v SPC17 NS 47uF 16v XC14 220uF 16v XC14 220uF 16v SPC21 NS 1uF SPC21 NS 1uF SPR5 110_1 R0603 SMD SPR5 110_1 R0603 SMD SPC5 NS ...

Page 30: ...0 0 47uF NC ACE645 100uF 10v NC ACE645 100uF 10v NC AC997 30pF AC997 30pF AQ1 2N3904 NC AQ1 2N3904 NC 1 3 2 AC1001 4 7uF 10V AC1001 4 7uF 10V AC1035 0 1uF AC1035 0 1uF AFB77 0603_Bead AFB77 0603_Bead AR1844 100 AR1844 100 ACE634 100uF 10V ACE634 100uF 10V AJ30 4x1 W HOUSING AJ30 4x1 W HOUSING 1 2 3 4 AC1039 0 1uF AC1039 0 1uF ATP25 ATP25 AC998 4 7uF 10V AC998 4 7uF 10V ACB624 0 1uF ACB624 0 1uF AC...

Page 31: ... 9 12 ADIN5 9 OPWM2 6 ADIN4 14 AVDD33_HDMI 8 AOLRCK AOBCK AOMCLK AOSDATA0 ADIN1 6 ADIN0 6 AIN0_L AIN0_R CVBS0P 9 OPWR0_5V 8 HPD_SINK 8 LVDS_CTRL2 Title Size Document Number Rev Date Sheet of MediaTek Inc TEL 03 567 0766 FAX 03 578 7610 No 1 2 Innovation Rd 1 SBIP Hsin Chu City 300 Drawn MT5305A P1V1 V1 C 4 15 Thursday December 03 2009 MT5305A MediaTek Confidential Title Size Document Number Rev Da...

Page 32: ... VDDQ G9 DQ4 H1 VSSQ H2 DQ3 H3 DQ2 H7 VSSQ H8 DQ5 H9 VDDL J1 VREF J2 VSS J3 VSSDL J7 CK J8 VDD J9 CKE K2 WE K3 RAS K7 CK K8 ODT K9 NC BA2 L1 BA0 L2 BA1 L3 CAS L7 CS L8 A10 AP M2 A1 M3 A2 M7 A0 M8 VDD M9 VSS N1 A3 N2 A5 N3 A6 N7 A4 N8 A7 P2 A9 P3 A11 P7 A8 P8 VSS P9 VDD R1 A12 R2 NC A14 R3 NC N15 R7 NC A13 R8 VDDQ G3 ACD129 0 01uF ACD129 0 01uF ACD133 0 1uF ACD133 0 1uF ARND9 56x4 ARND9 56x4 1 2 3 ...

Page 33: ... CEM1 47uF 16V RND8 56 RND8 56 1 2 3 4 5 6 7 8 CM20 0 1uF CM20 0 1uF RND6 56 RND6 56 1 2 3 4 5 6 7 8 RND9 56 RND9 56 1 2 3 4 5 6 7 8 CD23 0 1uF CD23 0 1uF CD27 0 1uF CD27 0 1uF CD25 0 1uF CD25 0 1uF CM19 0 1uF CM19 0 1uF CD42 0 1uF CD42 0 1uF RD25 1K_1 RD25 1K_1 RD19 56 RD19 56 RD13 100 RD13 100 CD41 0 1uF CD41 0 1uF RD26 1K_1 RD26 1K_1 CM15 4 7uF 10V CM15 4 7uF 10V CD19 0 1uF CD19 0 1uF CED1 10uF...

Page 34: ... AECKN G19 AECKP G20 AO3P H17 AO3N H18 AE3N H19 AE3P H20 AO4P J17 AO4N J18 AE4N J19 AE4P J20 BE0N M17 BE0P M18 BO0P M19 BO0N M20 BE1N N17 BE1P N18 BO1P N19 BO1N N20 BE2N P17 BE2P P18 BO2P P19 BO2N P20 BECKN R17 BECKP R18 BOCKP R19 BOCKN R20 BE3N T17 BE3P T18 BO3P T19 BO3N T20 BE4N U17 BE4P U18 BO4P U19 BO4N U20 AVSS33_LVDSA H16 AVSS33_LVDSA J16 AVDD33_LVDSA K17 AVDD33_LVDSA K18 TP_VPLL K20 AVSS12_...

Page 35: ...20090612 Modify 09 06 19 KEY PANEL HI LED RED LO LED GREEN FOR DEBUGGING RESEVED FOR EXTEND FUNCTION Layout anywhere CNB2 PH3 4A NC CNB2 PH3 4A NC 1 2 3 4 CNB1 PH3 4A CNB1 PH3 4A 1 2 3 4 JRN1 10K JRN1 10K 1 2 3 4 5 6 7 8 AR6 4 7K AR6 4 7K XC2 0 1uF XC2 0 1uF R1771 1 5K R1771 1 5K R1775 10k R1775 10k TR6 3 9K TR6 3 9K R13 4 7K R13 4 7K Q2 2N3906 Q2 2N3906 1 3 2 Q51 2N3906 Q51 2N3906 1 3 2 H4 HOLE G...

Page 36: ...y 300 Drawn MT5305A P1V1 V1 C 7 15 Friday November 27 2009 FLASH TRAP BYPASS FCI MediaTek Confidential Title Size Document Number Rev Date Sheet of MediaTek Inc TEL 03 567 0766 FAX 03 578 7610 No 1 2 Innovation Rd 1 SBIP Hsin Chu City 300 Drawn MT5305A P1V1 V1 C 7 15 Friday November 27 2009 FLASH TRAP BYPASS FCI MediaTek Confidential By Ray Serial Flash Dual Layout 8MB default XTAL 54M GPIO1 0 OPW...

Page 37: ...63 OUT_D2p 62 GND 61 OUT_D3n 60 OUT_D3p 59 VCC 58 OUT_D4n 57 OUT_D4p 56 GND 55 POW3 54 HPD3 53 SDA3 52 SCL3 51 GND 76 IN2D1n 77 IN2D1p 78 VCC 79 IN2D2n 80 IN2D2p 81 GND 82 IN2D3n 83 IN2D3p 84 VCC 85 IN2D4n 86 IN2D4p 87 GND 88 IN1D1n 89 IN1D1p 90 VCC 91 IN1D2n 92 IN1D2p 93 GND 94 IN1D3n 95 IN1D3p 96 VCC 97 IN1D4n 98 IN1D4p 99 GND 100 CN11 HDMI HAIER CN11 HDMI HAIER SHELL1 20 SHELL2 21 D2 1 D2 Shiel...

Page 38: ...GC3 1uF GC3 1uF OC10 1uF OC10 1uF VR10 10K VR10 10K T17 T17 red w BP4 RCA2X1 red w BP4 RCA2X1 1 3 5 4 2 R101 10K R101 10K BC19 15pF BC19 15pF D69 ESD_0402_10pF D69 ESD_0402_10pF 1 2 R L VP2 PHONE_V R L VP2 PHONE_V 3 5 4 2 1 6 7 VC2 10nF VC2 10nF BL6 FB 80 100MHz BL6 FB 80 100MHz BC20 10nF BC20 10nF OC12 0 1uF OC12 0 1uF T15 T15 OC3 0 1uF OC3 0 1uF OC13 0 1uF OC13 0 1uF VR2 75 VR2 75 VR11 75 VR11 7...

Page 39: ...9 22uF 16v R1762 0 15K R1762 0 15K CB999 0 1uF CB999 0 1uF R1764 10K R1764 10K CE4 47uF 16v CE4 47uF 16v R L VP3 PHONE_H R L VP3 PHONE_H 4 3 5 2 1 6 7 8 R1786 10K R1786 10K STC22 47pF NC STC22 47pF NC EC4 1000pF NC EC4 1000pF NC C645 100pF C645 100pF EC14 NS 470pF EC14 NS 470pF C670 10uF 10v C670 10uF 10v EC8 1000pF NC EC8 1000pF NC Q71 2N3904 Q71 2N3904 1 3 2 CE645 22uF 16v CE645 22uF 16v U55B LM...

Page 40: ...100K C770 10uF 10V C770 10uF 10V R1823 33 R1823 33 R1817 4 7K 470 R1817 4 7K 470 C755 0 1uF 50V C755 0 1uF 50V R1831 10K R1831 10K C772 0 22uF 25V C772 0 22uF 25V H2 HOLE GND H2 HOLE GND 2 2 3 3 4 4 5 5 9 9 8 8 7 7 6 6 1 1 CE647 47uF 16V CE647 47uF 16V XQ7 2N3904 XQ7 2N3904 1 3 2 C789 100uF 35V C789 100uF 35V C766 0 047uF 25V C766 0 047uF 25V R1833 10K R1833 10K R1815 0 R1815 0 R1819 18K_1 R1819 1...

Page 41: ...ation Rd 1 SBIP Hsin Chu City 300 Drawn MT5305A P1V1 V1 C 12 15 Friday December 04 2009 LVDS BACKLIGHT MediaTek Confidential Title Size Document Number Rev Date Sheet of MediaTek Inc TEL 03 567 0766 FAX 03 578 7610 No 1 2 Innovation Rd 1 SBIP Hsin Chu City 300 Drawn MT5305A P1V1 V1 C 12 15 Friday December 04 2009 LVDS BACKLIGHT MediaTek Confidential By Ray NEAR IC NEAR IC HI LVDS POWER ON LO LVDS ...

Page 42: ...UNER POWER 5V_TUNER Near Tuner Near Tuner Near IC 20090612 20090612 POWER SUPPLY 5V FOR TUNER muRata LQM18NNR22K00 和 LQM18NNR39K00 Near Tuner Near MT538X Use muRata Inductor and TDK Capacitor ZC9 47uF 16v ZC9 47uF 16v ZC6 33pF ZC6 33pF L158 330nH L158 330nH ZC50 0 1uF ZC50 0 1uF ZR15 0 ZR15 0 ZFB13 NC 0603 ZFB13 NC 0603 L153220nH L153220nH C801 33pF C801 33pF C806 10nF C806 10nF ZFB10 NC 0603 ZFB1...

Page 43: ...ff C13 0 1uF C13 0 1uF Q4 2N3904 Q4 2N3904 1 3 2 C20 0 1uF C20 0 1uF CE2 220uF 16V CE2 220uF 16V R8 2 2K R8 2 2K L3 10uH 3A L5_9 L3 10uH 3A L5_9 1 2 T6 T6 XQ2 2N3904 XQ2 2N3904 1 3 2 Q3 2N3904 Q3 2N3904 1 3 2 R9 2 7K_1 R0603 SMD R9 2 7K_1 R0603 SMD R89 100K R89 100K T4 T4 L4 10uH 3A L5_9 L4 10uH 3A L5_9 1 2 CPR14 0 R1206 SMD CPR14 0 R1206 SMD T12 T12 XR14 47K XR14 47K CNA1 TJC3 7A SIP 7P 2 5 HAIER...

Page 44: ...R15 0 SR15 0 GR21 10K GR21 10K P6 S Vdieo P6 S Vdieo 3 4 2 5 6 1 7 OC23 560pF OC23 560pF BD3 ESD_0402_10pF BD3 ESD_0402_10pF 1 2 SD3 ESD_0402_10pF SD3 ESD_0402_10pF 1 2 BC32 15pF BC32 15pF R1859 10K R1859 10K BR43 75 BR43 75 red w BP2 RCA2X1 red w BP2 RCA2X1 1 3 5 4 2 BC9 15pF BC9 15pF SR14 100 SR14 100 CE656 10uF 10V CE656 10uF 10V D83 D83 1 2 C671 10uF 10v C671 10uF 10v BD1 ESD_0402_10pF BD1 ESD...

Page 45: ...AUDIO OUT USB 0090402341 Power supply wire 0090402070C LVDS wire 0090403399E 0090400647 0090401643E 0090402750 Brand Customer Country America HAC Haier Job Order No Serial No Factory Model LA32K3 DC1670E0102 AT09SR1223US01 Service Model HL32K2a Customer Model Amplifier wire Speaker Wire keypad Wire Remote control Wire 0090402340 Backlight Wire Service Manual Model No HLC32K2 44 ...

Page 46: ...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 on the remote 8 2 Measurements and Adjustments 8 2 1 Version Info Service Manual Model No HLC32K2 45 ...

Page 47: ...8 2 2 Video Service Manual Model No HLC32K2 46 ...

Page 48: ...8 2 3 Audio 8 2 4 Picture Mode Service Manual Model No HLC32K2 47 ...

Page 49: ...8 2 5 Gamma 8 2 6 Panel Index Tuner Diagnostic Project debugging setting used to inspect the audio function Service Manual Model No HLC32K2 48 ...

Page 50: ...8 2 7 Back Light 8 2 8 Mod_Param Service Manual Model No HLC32K2 49 ...

Page 51: ...8 2 9 Function 8 2 10 Reste to default Service Manual Model No HLC32K2 50 ...

Page 52: ...Service Manual Model No HLC32K2 51 ...

Page 53: ...ify if correct channel is selected Adjust the antenna Make adjustments by Fine Tune and MANUAL Scan No color for some channel program black and white Verify if the same problem exists in other channels check out of picture and sound system Refer to relative instructions in the Manual for color adjust Spots with some or all pictures Verify if the antennal is correctly connected Verify if the antenn...

Page 54: ...9 2 Power Supply Board Failure Check Service Manual Model No HLC32K2 53 ...

Page 55: ... B D Source Re soldering or change IC U13 Check the input output Of IC U55 of Main B D Source Re soldering or change IC U55 Check the input output Of IC U2 of Main B D Source Re soldering or change IC U2 Check the Speaker Change the Speaker Check the Sperker wire Fail Pass Fail Fail Fail Fail Pass Pass Pass Pass Service Manual Model No HLC32K2 54 ...

Page 56: ... Sunken TCP lead cracking ACF bonding short Awful environment and something electric enter into LCD Mis align between TCP and Panel Panel failure TCP failure V Dim Vertal gray line V L D Vertical color line light or dark forever H B D Horizontal bar H Dim Horizontal gary line H L D Horizontal line light or dark forever Service Manual Model No HLC32K2 55 ...

Page 57: ...er Bladder between Polarizer and top glass Polarizer Scratch Polarizer Scratch Tine or rigidity arose F inside Polarizer Eyewinker inside Polarizer Eyewinker inside Polarizer Circuit Abnormal Display Abnormal Display 1 Chip lose action 2 IC ahort or jointiog bad 3 Pannel and vsc connect bad Flashing Bright and dark display alternately Service Manual Model No HLC32K2 56 ...

Page 58: ...ent and EDS Black Screen B L normal only Black screen display FIIcker Crosstalk LCD Vcom imbalance Abnormal Color Only color abormal Capacitance improper bring crosstalk inside LCD pannel Abnormal Color Only color abnormal 1 Chip lose action 2 IC short or jointion bad 3 Pannel and vsc connect bad Service Manual Model No HLC32K2 57 ...

Page 59: ...wire and electrode B L dark B L brightness darker than normal Connect badnessShort between wire and electrode B L wire damaged B L wire damaged Operation abnormal or systemic noise B L wire open Without backlight Operation abnormal or systemic noise B L shut down B L shutdown in sometime Short bitween lamp housing and wire Because consume power too much F M F M inB L white balck Rotundity or wirel...

Page 60: ...lcal or B L Light leakage Brightness at bottom of LCM brighter than normal B L unit badness Uniformity B L brightness asymmetric Sheet in B L unit is uneven Mount hole Lack screw or screw damage Lack screw Screw damage Service Manual Model No HLC32K2 59 ...

Page 61: ...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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