Haier L32F1120 Service Manual Download Page 69

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9-3. Pannel failure

Failure Mode

Part

Name

Description

Phenomena

Failure cause

TCP

V B/D

Vertical bar

Block Defect :TCP cracking or cracking
Dim or L/D :TCP 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

H o r i z o n t a l
line(light or dark
forever)

Summary of Contents for L32F1120

Page 1: ...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 Haier Group 2009 Qingdao Haier Electronics Co Ltd All rights reserved Unauthorized co...

Page 2: ...ble 4 1 Remove the Pedestal 7 8 8 8 8 11 12 14 14 4 2 Remove the Back Cover 14 4 3 Remove the Terminal Bracket 15 4 4 Remove the Power Module 15 4 5 Remove the Main Board 15 4 6 Remove the Speaker 16 4 7 Remove the Remote Control Board 16 5 Installation Instructions 16 5 1 External Equipment Connections 16 5 2 HDMI Connections 20 6 Operation Instructions 23 6 1 Front Panel Controls 6 2 Back Panel ...

Page 3: ... 02 9 Trouble shooting 58 9 1 Simple Check 58 9 2 Main Board Failure Check 9 3 Panel Failure 59 68 8 TV Operation 44 8 1 How to enter into the factory model 8 2 How to update software 56 57 ...

Page 4: ...ide It is dangerous to make any king of contact with any inside part of this product This symbol indicates that there are important operating and maintenance instructions in the literture accompanying the appliance 1 3 2 Be careful to the electrical shock to rain or excessive moisture This TV must not be exposed to dripping or splashing water 1 3 3 Electro static discharge ESD Some semiconductor s...

Page 5: ... receivers covered by this service manual might be equipped CAUTION eiver 3 Do not spray chemicals on or near this receiver or any of its assemblies 4 Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton tipped stick or comparable non abrasive applicator 10 by volume Acetone and 90 by volume is...

Page 6: ...ductor solid state devices can be damaged easily by static electricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be used to help reduce the ncidence of component damage caused by static by static electricity 4 Us...

Page 7: ...note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks 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 8: ...88 V Typ Color Display 16 7M No of Preset Channels Cable 1 135 Air 2 69 ATV DTV OSD Language English Color System NTSC Audio System M Audio Output Power Built in W 8W 2 Audio Output Power outer W No Total Power Input W 135W Voltage Range V AC100V 240V Power Frequency Hz 50 60Hz Net Weight KG Gross Weight KG 12 2 Net Dimension MM 793 113 511m m Packaged Dimension MM 980 205 626m m 9 5 ...

Page 9: ... 1 Board Location 3 2 Main Board No Description A Board Main Board B Board Power Board A Board B Board TB300713000M 514C3206M03 C Board C Board Power drive Backlight driver board 514C3208M01 514C3206M03 514C3208M01 L32F1120 L32D1120 TB300713100M ...

Page 10: ... QDPH 9 1 1 8 67 9 high voltage 9 1 32 5 21 2 967 9 9 1 1 1 9 9 Notes J16 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 CN115 Pin 5 System power on standby System board will use this pin to control system power J16 Pin 3 Control the luminance of backlight The system can generate the PWM signal to control the strength of ...

Page 11: ...03 5 1 5 5 027 21752 1 1 9 32 5 25 5 027 3LQ QXPEHU 6LJQDO QDPH HVFULSWLRQ 1 remote connector J6 Keypad and connector J7 Speaker connector J11 Pin number Signal nameD escription K P S R K P S R 1 K P S R K P S R 2 K P S L K P S L 3 K P S L K P S L 4 ...

Page 12: ...3 3 Power Board 3 3 1 Function Description Supply power for Main board Panel 11 1 1 3LQ QXPEHU 6LJQDO QDPH 3LQ QXPEHU 6LJQDO QDPH 1 1 1 9 9 32 5 21 2 967 9 9 ...

Page 13: ... RX0 Negative transmission data of pixel 0 6 RX0 Positive transmission data of pixel 0 7 GND Ground 8 RX1 Negative transmission data of pixel 1 9 RX1 Positive transmission data of pixel 1 10 GND Ground 11 RX2 Negative transmission data of pixel 2 12 RX2 Positive transmission data of pixel 2 13 GND Ground 14 RXCLK Negative of clock 15 RXCLK Positive of clock CNF1 Connector Pin Assignment ...

Page 14: ... VCC Power supply 12V 28 VCC Power supply 12V 29 VCC Power supply 12V 30 VCC Power supply 12V Note 1 Connector type STARCONN 106H30 011100 A2 R or compatible LVDS connector pin order defined as follows Note 2 High Connect to 3 3V or Open VESA Format Low connect to GND JEIDA Format Please refer to 5 5 LVDS INTERFACE Note 3 Reserved for internal use Left it open Note 4 LVDS signal pin connected to t...

Page 15: ...ssemble and assemble 4 1 Remove the Pedestal 4 3 Remove the adhesive tape The location of the adhesive tape as follows Remove the adhesive tape indicated on the _ faces upward 4 2Remove the Back Cover unit 14 ...

Page 16: ...4 3 Remove the Terminal Bracket 4 4 Remove the power module 4 5 Remove the Main board CN513 J6 J7 J9 J15 J16 J11 15 ...

Page 17: ...eaker Take out the speaker 4 7 Remove the remote control Remove the screw take out the remote control board 16 5 Installation Instructions 5 1 External Equipment Connections Accessories Remote Control User GUIDE Battery ...

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Page 19: ... 18 ...

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Page 21: ... Main source menu When the source device DVD player or Set Top Box supports DVI How To Connect 1 Connect the source device to HDMI port of this TV with a HDMI to DVI cable not supplied with this product 2 A separated audio connection is necessary 3 If the source device has an analog audio output connector connect the source device audio output to DVI Audio In port located on the PC port How To Use...

Page 22: ...VI 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 21 ...

Page 23: ...vided for operation on AC Insert the AC cord plug into a standard polarized AC outlet NOTES Use the attached power cord only electrician replace the obsolete outlet simply unplug the unit from the AC outlet and plug it back in The unit should return to normal operation 22 ...

Page 24: ...6 Operation Instructions Basal information 6 1 Front panel controls 6 2 Back panel controls 23 ...

Page 25: ...STEREO SAP in NTSCsystem 15 Press to change a channel 16 Press to select the digital sub channels For example to enter 54 3 press 54 And 3 17 Switches the TVsound on or off 18 20 Open the channel list in TVmode 21 Open the favorite channel list in TV mode Press CH or CH to go to the next or previous channel in the channel list Press VOL or VOL to increase or decrease the volume Press to launch the...

Page 26: ... All inductors are listed in microhenries and are 5 non wound 0603 form factor Signal Ports and Off Page Connectors are Global and transition between sheets 5 Signal Names without Signal Ports or Off Page Connectors are Local and only connect like named signals on the same sheet Notes unless otherwise specified 1 2 3 4 All resistors are listed in ohms and are 5 1 16W Metal Film 0402 form factor Al...

Page 27: ...B8 S0_DQ2 AA12 S0_DQ3 AB7 S0_DQ4 AA7 S0_DQ5 AB12 S0_DQ6 AA8 S0_DQ7 AA13 S0_DQ8 AB15 S0_DQ9 AB10 S0_DQ10 AB16 S0_DQ11 AB9 S0_DQ12 AA9 S0_DQ13 AA16 S0_DQ14 AA10 S0_DQ15 AA15 S0_BA2 AA5 S0_UDM AA11 S0_LDM AB11 S0_VREF U13 RDRIVER50 V17 RTERM U17 S0_A0 AA20 S0_A1 AB3 S0_A2 AB21 S0_A3 AA3 S0_A4 AA21 S0_A5 AB2 S0_A6 AB22 S0_A7 AA2 S0_A9 AA1 S0_A10 AA4 S0_A11 AA22 S0_A12 AB1 S0_BA0 AB5 S0_BA1 AB4 S0_UDQS...

Page 28: ...ctive high Active high Active high GPIO_P6 GPIO_P14 GPIO_P2 GPIO_P3 GPIO_P11 VGA_HSYNC GPIO_TVP13 VGA wake up control detection DVD_AUTO_SW DVD_STB GPIO_TVP1 FP_LED1 GPIO_TVP2 FP_LED2 GPIO_TVP3 PWR_SW_DVD GPIO_TVP4 VGA_UART_ON OFF PWR_SW_USB COMP_SW1 GPIO_P4 Select component and DVD 0 Component 1 DVD Title Size Document Number Rev Date Sheet of GPIO_Table A1 Zoran HD7X5 Ref Platform Rev 1 0 18 18 ...

Page 29: ...3 TP92 TP92 R238 4 7K R238 4 7K R306 4 7K R306 4 7K C254 NC 0 1uF C254 NC 0 1uF R296 10K R296 10K FB2 FB42R 4A FB2 FB42R 4A R999 NC 10K R999 NC 10K TP93 TP93 TP49 TP49 TP104 TP104 CN10 NC DC JACK CN10 NC DC JACK 1 1 2 2 3 3 TP95 TP95 Q37 3904 Q37 3904 1 2 3 TP05 TP05 TP94 TP94 TP97 TP97 TP48 TP48 C255 NC 10nF C255 NC 10nF R313 0R_DNS R313 0R_DNS FB3 FB42R 4A FB3 FB42R 4A TP106 TP106 C258 470uF 25V...

Page 30: ...229 0 1uF C229 0 1uF R215 5 1K_1 R215 5 1K_1 C191 470uF 16V C191 470uF 16V C195 0 1uF C195 0 1uF C232 0 1uF C232 0 1uF R67 220R R67 220R R218 0 R218 0 ADJ OUT IN U13 AMS1117 3 3 ADJ OUT IN U13 AMS1117 3 3 3 2 1 4 C224 220uF 16V C224 220uF 16V 1 2 C198 0 1uF C198 0 1uF C231 10nF C231 10nF C249 10uF C249 10uF U25 SGM2019_ADJ U25 SGM2019_ADJ IN 1 VSS 2 NC 4 VOUT 5 EN 3 U12 MP1482 U12 MP1482 EN 7 FB 5...

Page 31: ...10 GND2 H11 GND3 H12 GND4 H13 GND5 H14 GND6 H15 GND7 J9 GND8 J10 GND9 J11 GND10 J12 GND11 J13 GND12 J14 GND13 J15 GND14 K9 GND15 K10 GND16 K11 GND17 K12 GND18 K13 GND19 K14 GND20 K15 GND23 L11 GND24 L12 GND25 L13 GND26 L14 GND27 L15 GND29 M10 GND30 M11 GND31 M12 GND32 M13 GND33 M14 GND34 M15 GND35 N9 GND36 N10 GND37 N11 GND38 N12 GND39 N13 GND40 N14 GND41 N15 GND42 P9 GND43 P10 GND44 P11 GND46 P13...

Page 32: ...7 H17 CVDD8 J17 CVDD9 K17 CVDD10 L17 CVDD_MSD T10 CVDD12 U10 MVDD1 T11 MVDD2 U11 MVDD3 T13 MVDD4 T14 MVDD5 U14 MVDD6 T15 MVDD7 U15 USB2_VDDA33T P17 AFE_VDD10_PLL N7 AFE_VDD33_PLL M7 LDI_VDD3V3 F13 LDI_CVDD1V F12 SYSPLL_AVDD3V3 T9 DDRPLL_AVDD3V3 R17 DDRPLLVDD T17 CVSS_MSD P12 DDRPLLVSS P15 AFE_PLL_GND M9 C203 0 01uF C203 0 01uF L30 GZ1608D601 L30 GZ1608D601 C413 10uF C413 10uF C198 10uF C198 10uF C...

Page 33: ... 6 R197 10K R197 10K R203 0_DNS R203 0_DNS R195 10K R195 10K TP53 TP53 R196 4 7K R196 4 7K R225 5 1K R225 5 1K R227 4 7K R227 4 7K Q24 3904 Q24 3904 J12 NC 10p 2 0 J12 NC 10p 2 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 R269 10K R269 10K MCU I F U1J ZR39745 MCU I F U1J ZR39745 ADC8_IN0 L1 ADC8_IN1 L2 ADC8_IN2 L3 ADC8_IN3 M2 ADC8_IN4 M3 IRR T1 WDT_EN P1 INT0_N GPIO_TVP13 HDMI2_HPD P4 INT1_N GPIO_T...

Page 34: ...Rev Date Sheet of GPIO I F A1 Zoran HD7X5 Ref Platform Rev 1 0 12 18 Friday August 12 2011 Title Size Document Number Rev Date Sheet of GPIO I F A1 Zoran HD7X5 Ref Platform Rev 1 0 12 18 Friday August 12 2011 Title Size Document Number Rev Date Sheet of GPIO I F A1 Zoran HD7X5 Ref Platform Rev 1 0 12 18 Friday August 12 2011 R211 4 7K R211 4 7K J4 J4 GPIO I F U1I ZR39745 GPIO I F U1I ZR39745 GPIO_...

Page 35: ...8A 0x4 RP8A 0x4 1 2 TP79 TP79 TP77 TP77 RP6B 0x4 RP6B 0x4 3 4 R276 0_DNS R276 0_DNS TP80 TP80 R172 4 7K_DNS R172 4 7K_DNS RP5A 0x4 RP5A 0x4 1 2 R177 1K R177 1K Q14 3904 Q14 3904 1 2 3 RP9C 0x4 RP9C 0x4 5 6 TP81 TP81 R229 NC R229 NC R167 4 7K R167 4 7K RP8B 0x4 RP8B 0x4 3 4 TP84 TP84 TP82 TP82 RP9A 0x4 RP9A 0x4 1 2 R171 1K_DNS R171 1K_DNS C119 10uF C119 10uF R170 10K R170 10K RP7C 0x4 RP7C 0x4 5 6 ...

Page 36: ...57 10K FB704 NC FB 1206 FB704 NC FB 1206 C722 0 1uF 16V C722 0 1uF 16V R278 270K R278 270K R275 10K R275 10K Q27 3904 Q27 3904 1 2 3 R246 22R R246 22R R244 1K R244 1K C186 220uF 16V C186 220uF 16V TP110 TP110 C713 1uF 50V C713 1uF 50V C234 0 1uF C234 0 1uF L31 33uH L31 33uH R272 NC 10K R272 NC 10K R178 4 7K R178 4 7K R279 470R R279 470R C64 1uF C64 1uF R126 10K R126 10K D12 NC 1N4148 D12 NC 1N4148...

Page 37: ... Rev 1 0 9 18 Friday August 12 2011 Title Size Document Number Rev Date Sheet of Audio out A1 Zoran HD7X5 Ref Platform Rev 1 0 9 18 Friday August 12 2011 Audio OUT I F U1G ZR39745 Audio OUT I F U1G ZR39745 LINE_OUT1_L B5 LINE_OUT1_R A5 LINE_OUT2_L B6 LINE_OUT2_R A6 AC_VCM F7 AC_VREFDAC1 E6 AC_VREFDAC2 E7 AC_VREFADC F6 AC_AGNDREF G7 AC_AVDD H6 SPDIF C8 C378 0 1uF C378 0 1uF R260 1R R260 1R C377 0 1...

Page 38: ... 22K R112 22K C85 1uF C85 1uF Audio IN I F U1F ZR39745 Audio IN I F U1F ZR39745 LINE_IN1_L A3 LINE_IN1_R A2 LINE_IN2_L B3 LINE_IN2_R B2 LINE_IN3_L C3 LINE_IN3_R C2 LINE_IN4_L A4 LINE_IN4_R A1 LINE_IN5_L B4 LINE_IN5_R B1 D31 ESD 0402 D31 ESD 0402 R117 22K R117 22K TP26 TP26 TP30 TP30 C86 1uF C86 1uF D37 ESD 0402 D37 ESD 0402 C84 1uF C84 1uF CN11 CN11 1 2 3 4 5 6 7 8 R116 100 R116 100 D32 ESD 0402 D...

Page 39: ... 18 Friday August 12 2011 Title Size Document Number Rev Date Sheet of Component DVD A1 Zoran HD7X5 Ref Platform Rev 1 0 7 18 Friday August 12 2011 J35 NC AV JACK 3 YPbPr J35 NC AV JACK 3 YPbPr 1 1 2 2 3 3 4 4 5 5 7 7 6 6 8 8 C73 2 2uF C73 2 2uF TP34 TP34 Y Pb Pr V L R CN4 AV JACK 1 Y Pb Pr V L R CN4 AV JACK 1 1 1 2 2 9 9 3 3 8 8 4 4 5 5 7 7 6 6 TP10 TP10 TP37 TP37 C78 2 2uF C78 2 2uF TP12 TP12 R8...

Page 40: ...9 ESD 0402 D19 ESD 0402 R71 0R R71 0R R78 0R_DNS R78 0R_DNS C423 10uF C423 10uF L28 1 8uH L28 1 8uH D25 ESD 0402 D25 ESD 0402 L8 47R L8 47R R73 3 3K R73 3 3K TP39 TP39 D21 ESD 0402 D21 ESD 0402 C97 22pF C97 22pF C521 0 1uF C521 0 1uF C90 22pF C90 22pF C74 0 1uF C74 0 1uF C433 1uF C433 1uF R70 75R R70 75R C106 0 1uF C106 0 1uF D28 ESD 0402 D28 ESD 0402 R79 100R R79 100R C104 1nF C104 1nF J36 NC AV ...

Page 41: ...N 3 VOUT 2 ADJ 1 TAB 4 C94 10uF C94 10uF R157 330R_1 R157 330R_1 U24 DVT 8ADC T41F0HS U24 DVT 8ADC T41F0HS GND 12 GND 13 GND 14 GND 15 NC 2 NC 1 NC 3 SDA 5 NC 6 IF AGC 9 DIF 10 SCL 4 5V IF 7 DIF 11 AS_IF 8 C35 47pF C35 47pF C30 47pF C30 47pF C92 0 1uF C92 0 1uF R55 100R R55 100R C40 560pF C40 560pF 1 2 R154 110R_1 R154 110R_1 C28 10nF C28 10nF U16 AMS1084CD ADJ U16 AMS1084CD ADJ VIN 3 VOUT 2 ADJ 1...

Page 42: ...R1836 100 CB61 0 1uF CB61 0 1uF D36 ESD_0402 D36 ESD_0402 1 2 R53 1K R53 1K CB68 0 1uF CB68 0 1uF R62 10K R62 10K CB63 0 1uF CB63 0 1uF CN3 HDMI_con CN3 HDMI_con SHELL1 20 SHELL2 21 D2 1 D2 Shield 2 D2 3 D1 4 D1 Shield 5 D1 6 D0 7 D0 Shield 8 D0 9 CK 10 CK Shield 11 CK 12 CEC 13 NC 14 DDC CLK 15 DDC DATA 16 GND 17 5V 18 HP DET 19 SHELL3 22 SHELL4 23 C747 0 1uF C747 0 1uF CB64 0 1uF CB64 0 1uF R48 ...

Page 43: ...R30 47R R102 0R R102 0R R108 0R R108 0R C122 10uF C122 10uF U66 U66 CE 1 SO 2 WP 3 VSS 4 SI 5 SCK 6 HOLD 7 VDD 8 J17 CON4 J17 CON4 1 2 3 4 SOIC8 208mil U11 MX25L3205D SOIC8 208mil U11 MX25L3205D HOLD 1 VCC 2 NC1 3 NC2 4 NC3 5 NC4 6 SO16 CS 7 DO 8 WP Vpp 9 VSS 10 NC5 11 NC6 12 NC7 13 NC8 14 DI 15 CLK 16 SOP8 CS 17 SOP8 DO 18 SOP8 WP Vpp 19 VSS 20 SOP8 DI 21 SOP8 CLK 22 SOP8 HOLD 23 SOP8 VCC 24 R202...

Page 44: ... Connection Wire Control for USB INPUT 2 3 4 5 6 7 Connection Wire For Keyboard Connection Wire For Speaker Connection Wire For SIDE AV INPUT Connection Wire For Remote 8 Connection Wire Control for Backlight on off LVDS Wire Connection Wire Power For Mainboard ...

Page 45: ... 44 8 TV Operation ...

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Page 57: ... Color 3 White Balance Color Temp 4 Picture Mode 5 SSPLL Seting 6 Aging Mode 7 USB 8 Power On Mode 9 Gamma Table 1 You can voice menu mode press 8 8 9 3 to enter the factory menu Presse the key MENU to shut the factory setting 10 Reset to default 11 Reset all asttings to default ...

Page 58: ...When Upgrade on the process please don t Power Off Haier ZR93745 F W upgrade with USB SOP Step 1 Ready for F W Upgrade 1 1 Prepare a USB memory from computer s USB port Step 2 F W Upgrade 2 1 AC ON 8 2 How to update software 2 3 Enter the factory menu select the Aging Mode option to ON state Save the factory menu based system insert the USB after reboot ...

Page 59: ... 58 9 Trouble shooting 9 1 Simple check ...

Page 60: ...n board failure check Service guide 1 Black creen 2 White screen 6 J15 J15 8 1 1 on VCC pins of J9 Check if Q39 is working Check if J9 is Signal on J9 Check Q34 Q35and the 5 Is power LCD normal 13 1 1 Y Replace U1 ...

Page 61: ... 60 3 Panel display abnormally connector J9 is at normal level ...

Page 62: ... the speakers Y N Check if there is output at J11 Check if there is 12V input at PIN28 of U20 Check if the power supply system is damaged short circuit or mis connected N Y Check if PIN1 of U20 is low voltage Check the volume control circuit from U20 Y N Check if there is signal input at PIN3 PIN12 of U20 Check the volume input circuit from to U20 N Y Replace U20 ...

Page 63: ...U24 N Y Y Y N Check the power supply circuit to this PIN7 Check if there is intermediate frequency signal output at PIN10 of U24 Check if there is I2C signal at PIN6 PIN7 of U24 Check the I2C circuit between U1 and U24 Check the tuner Check the signal circuit between U1 and U24 Fix the RF set N PIN11 ...

Page 64: ...6 HDMI no picture or picture abnormal If CN2 CN3 is Q40 Q41 63 U1C ...

Page 65: ... 64 7 PC no picture or picture abnormal ...

Page 66: ... 65 8 YPBPR AV no picture or picture abnormal Check Y ...

Page 67: ...be caused by surge current 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 I C s h o r t o r jointion bad 3 Pannel and vsc connect bad ...

Page 68: ... Bladder in Polarizer Bladder between Polarizer and top glass Polarizer Scratch Polarizer Scratch Tine or rigidity arose F M i n s i d e 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 B r i g h t a n d d a r k display alternately ...

Page 69: ... Dim or L D TCP 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 H o r i z o n t a l line light or dark forever ...

Page 70: ...n Connect badness between 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 whit...

Page 71: ...omena Failure cause Mechanlcal 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 ...

Page 72: ...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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