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Haier HL32R1 - R-Series - 31.5" LCD TV, Руководство по обслуживанию, Страница: 53 / 55

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Haier HL32R1 - R-Series - 31.5

47 

9-4. Pannel failure 

Failure Mode

 

Part Name Description  Phenomena 

Failure 

cause 

V B/D 

Vertical bar 

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 

 
 
TCP 
 
 
 
 
 

H L/D 

Horizontal 

line(light or 

dark forever) 

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 

 
Failure Mode

 

Part Name Description  Phenomena 

Failure 

cause 

Dot Defect 

Bright dot dark 

dot in pannel 

 

Incoming Inspection Standard 

Polarizer 

Bubble 

Bladder in 

Polarizer 

 

Bladder between Polarizer and top glass 

Polarizer 

Scratch 

Polarizer Scratch 

 

Tine or rigidity arose 

Panel or 
Polarlzer 
 
 
 
 
 

F/M inside 

Polarizer 

Eyewinker inside 

Polarizer 

 

Eyewinker inside Polarizer 

Circuit 

Abnormal 

Display 

Abnormal Display

 

1. Chip lose action 
2. IC ahort or jointiog bad 

Содержание HL32R1 - R-Series - 31.5" LCD TV

Страница 1: ...ttempting to service a product Products powered b electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product deal with in this service information by anyone else could result in serious injury or death COLOR TV Model No HL32R1 CHASSIS MTK5380LC 2009 Qingdao Electronics limited company All rights reserved Unauthorized copying...

Страница 2: ... the speaker 13 4 4 Remove the power module 13 4 5 Remove the Main board 14 4 6 Remove the remote control and the keypad control 14 4 7 Remove the Terminal Bracket 14 5 Installation Instructions 15 5 1 External Equipment Connections 15 5 2 HDMI and DVI input 20 6 Operation Instructions 23 6 1 Tv Side pannel control and connections 23 6 2 Back Panel Conections 24 6 3 Setting Up Your Remote Control ...

Страница 3: ...ter into Service Mode 43 8 1 2 How to exit 43 8 2 Measurements and Adjustments 43 9 Trouble shooting 49 9 1 Simple check 49 9 2 Power Supply Board failure check 50 9 3 Main board failure check 51 9 4 Pannel failure 53 ...

Страница 4: ... operating and maintenance instructions in the literture accompanying the appliance 1 2 2 Be careful to the electrical shock To prevent damage which might result in electric shock or fire do not expose this TV set to rain or excessive moisture This TV must not be exposed to dripping or splashing water and objects Filled with liquid such as vases must not be place on top of or above the TV 1 2 3 El...

Страница 5: ...ester External exposure metal Antenna terminal Headphone jack 1 2 7 Ordering Spare Parts Please include the following informations when you order parts Particularly the Version letter 1 Model number and Version letter The model number can be found on the back of each product and the Version letter can be found at the end of the serial number 2 Part No and Description You can find them in your serv...

Страница 6: ...this manual where he she will find additional information on a specific topic 2 Specification Model Screen size Aspect ratio 16 9 Resolution Contrast Ratio Angel of view Color display 16 7M OSD language English Color system ATSC NTSC Audio system DK BG I LL Audio output power Built in W Audio output power outer W No Total power input W Voltage range V 120V 10 V Power frequency Hz 60HZ Time of slee...

Страница 7: ...0094001274A Power Supply 3 1 Board Location No Parts number Description 3 2 Main Board AV Board 3 2 1 Function Description Main Board Process signal which incept from exterior equipment then translate into signal that panel can display 3 2 2 Connector definition Main board connector ...

Страница 8: ...light on off The system can turn on or turn off the backlight of TFT LCD Panel through the power supply unit path CN1 Pin1 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 CNA2 Pin number Signal number 1 24V 16 5V 2 24V 16 5V 3 GND 4 GND Remote connector CNE1 Pin number Signal number 1 5VSB 2 IR_IN...

Страница 9: ...r connector CNC1 Pin number Signal number 1 SPEA_L 2 SPEA_L 3 SPEA_R_ 4 SPEA_R Other connectors CNB2 to Upgrade the program of MTK5380L U13 AND FLASH U17 3 3 Power Board 3 3 1 Function Description Supply power for Main board Panel 3 3 2Connectordefinition CON2 ...

Страница 10: ...CON3 CON3 ...

Страница 11: ...3 4 LCD Panel 3 4 1 Function Description Display the signal 3 4 2 Connector definition ...

Страница 12: ...4 Disassemble and assemble ...

Страница 13: ...e the pedestal 4 2 Remove the Back Cover Remove the fourteen screw indicated on figure above by blue line Then remove the back cover from the unit 4 3 Remove the speaker Remove the four screw from the speaker indicated on figure above by blue line 4 4 Remove the power module Remove the four screw indicated on the figure above by blue line Then remove the power module 2 screw ST3 10 4 screw M4 8 ...

Страница 14: ...he remote control and the keypad control Remove the four screw indicated on the figure above by blue line Take out the remote control board and the keypad control 4 7 Remove the Terminal Bracket 4 8 Remove the panel Remove the eight screw indicated on the figure above by blue line Remove the ten screw indicated on the figure above by blue line Then remove the terminal bracket Then remove the panel...

Страница 15: ...rove 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 connections To install the antenna properly please contact a professional in your area Accessories Remote control Owner s manual Alkaline battery AAA 2 Please READ this manual carefully before operating your TV a...

Страница 16: ...ent input sources External Equipment Choose Y To avoid picture noise interference leave an adequate distance between the VCR and TV Connection Option 1 Set VCR output switch to channel 3 or 4 and then tune the TV to the same channel number Connection Option 2 1 Connect the audio and video cables from the VCR s output jacks to the TV input jacks as shown in the figure When connecting the TV to VCR ...

Страница 17: ...o the S VIDEO input on the TV as shown in the figure Note If your DVD player does not have component video output use S Video How to use 1 Turn on the DVD player insert a DVD 2 Use INPUTbutton on the remote control to select component mode 3 Press Play button on external equipment for program play 4 Refer to the DVD player s manual for operating instructions How to connect Connect the audio and vi...

Страница 18: ... top box 2 Use INPUT on the remote control to select COMPONENT VGA or HDMI source Send the TV s audio to external audio equipment stereo system via the Digital Audio Output Optical port How to connect 1 Connect one end of an optical cable to the TV Digital Audio Optical Output port 2 Connect the other end of the optical cable to the digital audio optical input on the audio equipment See the extern...

Страница 19: ... isset to Plugand Play automaticallyby theTV 3 Then make thecorresponding audioconnection Ifusing asound card adjust the VGA sound as required How touse 1 Turnon the computerand theTV 2 UseINPUT onthe remotecontrol toselect VGAor HDMIsource 3 Check the image on your TV There may be noise associated with the resolution vertical pattern contrast or brightness in VGAmode If noiseis present changethe ...

Страница 20: ...n 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 Aseparated 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 left side of HDMI port How To Use If the...

Страница 21: ...HDMI Cable not supplied with the product HDMI to DVI Cable not supplied with the product Analog Audio Cable Stereo to RCA type not supplied with the product Cable sample ...

Страница 22: ...et If you cause a static discharge when touching the unit and the unit fails to function simply unplug the unit from the AC outlet and plug it back in The unit should return to normal operation Polarized AC Cord Plug AC Outlet Wider Hole and Blade You can connect a set of headphones to your set if you wish to watch a TV programme without disturbing the other people in the room Connecting Headphone...

Страница 23: ...erminal 10 HDMI IN Connect a 11 Remote Sensor Receives signals from the remote control Do not put anything near the sensor Press to access the on screen menu display access Press repeatedly to change the source to the one you want to watch In the MENU screen the INPUT button serves as the ENTER button USB input Connect a USB flash drive to view JPEG images or listen to MP3 songs IR which may block...

Страница 24: ... VGA Video In Connect a video cable from a computer to this jack 7 VIDEO In Connects the video signal from a video device 8 In Connect a component video device to these jacks 9 AUDIO In Connect the audio L R cables from the video signal source to these jacks 10 S VIDEO In Connect the S Video cable from an external signal source to this jacks 11 COMPONENT AUDIO In Connect the audio L R cables from ...

Страница 25: ... example to enter 54 3 press 54 and 3 19 RECALL Press to jump back and forth between two channels 20 CHANNEL UP DOWN 21 EXIT Clears all on screen displays and returns to TV viewing from any menu 22 23 DISPLAY 24 Functions Rewind Fast backward Forward Stop Play Pause REC 25 FREEZE Press once to display a frozen image of the current program but audio continues Press again to return to the program 26...

Страница 26: ...7 Electrical parts 7 1 Block diagram 7 2 Circuit Diagram MTK5380L MT8292 TPA3101 ...

Страница 27: ...N TPA1301 U17 U18 HDMI2 0 8 x 1 2 49K 470 5 04V near NCP1587 TP88 TP88 R8 0 R0603 SMD R8 0 R0603 SMD CE641 470uF 16V CE641 470uF 16V TP83 TP83 CNA4 5PIN_2 0 CNA4 5PIN_2 0 GND 3 5V 4 STB 5 12V 1 GND 2 C709 0 1uF C709 0 1uF 1 2 R2021 2 49K_1 R2021 2 49K_1 C697 100pF C697 100pF 1 2 R1697 4 7K R0603 SMD R1697 4 7K R0603 SMD C701 0 1uF C701 0 1uF 1 2 TP90 TP90 CNE2 PH 4H SIP 4P 2 0A CNE2 PH 4H SIP 4P 2...

Страница 28: ...LT1084 TO 252 3 TO 252 3 SMD 3 1 2 IN ADJ GND OUT R11 180_1 R0603 SMD C301 0 1uF C0402 SMD U1 AZ1117 adj SOT223 SMD 1 2 3 ADJ GND OUT IN CE33 470uF 16V C470UF16V D8H9 R5 1K_1 R0603 SMD CB33 0 1uF C0402 SMD CE2 100uF 16V C100UF16V D6 3H7 C302 100nF C0402 SMD CE15 100uF 16V C100UF16V D6 3H7 CB5 0 1uF C0402 SMD U6 AZ1117 adj SOT223 SMD 1 2 3 ADJ GND OUT IN U3 AP1513 SOP 8 SOP8 SMD 1 2 3 4 5 6 7 8 FB ...

Страница 29: ...F10V D6 3H7 Q16 NC 2N3904 1 3 2 CB228 0 1uF C0402 SMD R14 180_1 R0603 SMD CB197 0 1uF C0402 SMD R19 0 R0603 SMD C540 NC 330pF C0402 SMD C575 1uF C0402 SMD CE19 47uF 16V C47UF16V D5H7 CB229 0 1uF C0402 SMD CE22 100uF 16V C100UF16V D6 3H7 C573 1uF C0402 SMD CE83 100uF 16V C100UF16V D6 3H7 CE30 100uF 16V C100UF16V D6 3H7 CE28 100uF 16V C100UF16V D6 3H7 U7 AZ1117 adj SOT223 SMD 1 2 3 ADJ GND OUT IN U3...

Страница 30: ... R0603 SMD R40 4 7K R0603 SMD R198 10K R0603 SMD R27 1 R0603 SMD C22 1uF C0402 SMD CB2 0 1uF NC FB17 FB BEAD SMD 0603 H3 HOLE GND 2 3 4 5 9 8 7 6 1 2 3 4 5 9 8 7 6 1 R42 10 NC Q1 2N3904 SOT23 SMD 1 3 2 R199 NS 10K R0603 SMD R25 1K R0603 SMD R21 220 R0603 SMD CB70 0 1uF C0402 SMD Y1 60MHz CRYS 49US P4 88 R18 100 0R R0603 SMD R44 470 NC R30 33 R0603 SMD R1886 10K NC R0603 SMD R15 0 NC R0603 SMD R35 ...

Страница 31: ...C41 1uF C0402 SMD L8 390nH C42 0 01uF C0402 SMD FB61 NS FB CE38 100uF 16V C100UF16V D6 3H7 R34 5 1K 1 R0603 SMD FB34 FB BEAD SMD 0805 FB58 FB NC L26 220nH CE31 470uF 16v 220uF 16v C142 33pF T2 TD1636EF MK2 TD1636F_V 12 13 14 15 2 1 3 5 6 9 10 4 7 11 8 GND GND GND GND VT ANT POWER RF_AGC SCL SDA IF AGC DIF AS 5V IF DIF AS_IF C696 33pF C0402 SMD C57 4 7uF 10V C0805 SMD CB86 0 1uF NC C0603 SMD L152 N...

Страница 32: ...4 5 6 7 8 RA7 75 R0603 SMD RNA6 47x4 RN0402 SMD 1 2 3 4 5 6 7 8 RA14 100 R0603 SMD CA27 0 1uF C0402 SMD UA1 16M x 16 DDR TSOP 66 TSOP66 SMD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 VDD DQ0 VDDQ DQ1 DQ2 VSSQ DQ3 DQ4 VDDQ DQ5 DQ6 VSSQ DQ7 NC VDDQ LDQS NC...

Страница 33: ...R0603 SMD R1705 100R R0603 SMD R1227 NC 4 7K R0603 SMD R1227 NC 4 7K R0603 SMD CB452 0 1uF C0402 SMD CB452 0 1uF C0402 SMD CB52 0 1uF C0402 SMD CB52 0 1uF C0402 SMD R197 NC 10K R0603 SMD R197 NC 10K R0603 SMD RN5 10K RN0603 SMD RN5 10K RN0603 SMD 1 2 3 4 5 6 7 8 CA36 4 7uF 10V C0805 SMD CA36 4 7uF 10V C0805 SMD CA37 0 1uF C0402 SMD CA37 0 1uF C0402 SMD CB53 0 1uF C0402 SMD CB53 0 1uF C0402 SMD CA3...

Страница 34: ...12 13 14 15 16 17 18 19 22 23 24 25 26 SHELL1 SHELL2 D2 D2 Shield D2 D1 D1 Shield D1 D0 D0 Shield D0 CK CK Shield CK CE Remote NC DDC CLK DDC DATA GND 5V HP DET SHELL3 SHELL4 SHELL5 SHELL6 SHELL7 D219 1 2 D245 1 2 C731 0 1uF R66 50 R0402 SMD R2120 1M CN8 HDMI HAIER HDMI HAIER_JAE 20 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 22 23 24 25 26 SHELL1 SHELL2 D2 D2 Shield D2 D1 D1 Shield D1 D0 D...

Страница 35: ...CB216 0 1uF C0402 SMD L153 FB R1206 SMD R2103 10K CE52 470uF 16V 100uF C470UF16V D8H9 TP42 TEST R2106 100 Q29 2N3904 SOT23 SMD 1 3 2 R2096 NS 0 FB12 FB nc R1206 SMD R2105 100 R126 47K NC R0603 SMD R401 10K R0603 SMD Q28 2N3904 SOT23 SMD 1 3 2 CB152 0 1uF C0402 SMD C85 1uF C0402 SMD R2102 10K U13C MT5380 SMD LQFP LQFP256 SMD 5380 9 244 243 242 241 239 238 237 236 235 234 233 232 230 229 228 227 226...

Страница 36: ...C R0603 SMD R1830 0 NC R0603 SMD D160 ESD_0402_10pF C0402 SMD D160 ESD_0402_10pF C0402 SMD 1 2 R1833 75 R0603 SMD R1833 75 R0603 SMD w red P76 RCA2X1 RCA2 HAIER L w red P76 RCA2X1 RCA2 HAIER L 1 3 5 4 2 TP97 TP97 R1203 75 R0603 SMD R1203 75 R0603 SMD D156 ESD_0402_10pF C0402 SMD D156 ESD_0402_10pF C0402 SMD 1 2 C357 10nF C0402 SMD C357 10nF C0402 SMD R1189 100 R0603 SMD R1189 100 R0603 SMD R48 1K ...

Страница 37: ...D31 ESD_0402_10pF C0402 SMD 1 2 R169 68 R0603 SMD R160 0 R0603 SMD R181 0 R0603 SMD R171 75 R0603 SMD TP9 R182 10K R0603 SMD C137 5pF C0402 SMD R161 0 R0603 SMD QF6 2N7002LT1 SOT23 SMD 1 3 2 w red P82 RCA2X1 RCA2 HAIER L 1 3 5 4 2 R100 10K C136 10nF C0402 SMD D23 ESD_0402_10pF C0402 SMD 1 2 C141 5pF C0402 SMD R196 0 R0603 SMD R166 100 R0603 SMD CB161 0 1uF C0402 SMD R186 100 R0603 SMD R L P11 PHON...

Страница 38: ...0603 SMD C459 47pF C0402 SMD R1525 47 R0603 SMD TP110 D147 ESD_0402_10pF C0402 SMD 1 2 R1560 100 R0603 SMD w red P80 RCA2X1 RCA2 HAIER L 1 3 5 4 2 CB163 0 1uF C0402 SMD R1858 47 R0603 SMD CB162 0 1uF C0402 SMD R1882 1K NC R0603 SMD TP1 D197 ESD_0402_10pF C0402 SMD 1 2 D146 ESD_0402_10pF C0402 SMD 1 2 R1562 47 R0603 SMD TP108 R1598 27 R0603 SMD C151 1uF C0402 SMD red y w CNC2 RCA3X1 RCAJACK 1X3_SW ...

Страница 39: ...N3_L 10 AIN3_R 10 5VSB 1 2 11 15 GND 1 2 3 4 5 6 7 8 9 10 11 12 14 15 A0SDATA0 9 AOMCLK 9 AOLRCK 7 AOBCK 7 AV33 AV33 AV33 AV33 AV33 3V3SB CB171 0 1uF C0402 SMD U13G MT5380 SMD LQFP LQFP256 SMD 5380 9 179 178 177 176 175 174 173 172 171 183 181 182 180 203 200 201 202 198 188 187 191 189 192 184 190 186 185 170 AIN0_L AIN0_R AIN1_L AIN1_R AIN2_L AIN2_R AIN3_L AIN3_R AVDD33_AADC AVSS33_AADC VMID_AAD...

Страница 40: ...MD C40 1uF C0402 SMD C167 2 2nF R64 10K R0603 SMD R1766 33K R0603 SMD CB981 0 1uF C0402 SMD R1767 33K R0603 SMD C170 10uF 6 3V C0805 SMD C660 4 7uF 6 3V C0805 SMD C702 4 7uF 6 3V C0805 SMD C35 1uF C0402 SMD R1808 10K R0603 SMD R1616 1K R0603 SMD R1867 33K R0603 SMD R279 470 R0603 SMD C585 1uF C0402 SMD R65 10K R0603 SMD C648 10uF 6 3V C0805 SMD C656 4 7uF 6 3V C0805 SMD R1801 470 R0603 SMD L11 FB ...

Страница 41: ... C665 0 22uf C0603 SMD R1785 470 R0603 SMD 1 2 R1773 39K R0603 SMD R1777 4 7K R0603 SMD CE630 47uF 16V C47UF16V D5H7 1 2 R1784 NC R0603 SMD 1 2 C671 1500P C0402 SMD D175 1N4148 1N4148 SMD C672 1uF C0402 SMD Q62 MMBT3904 SOT23 1 2 3 C664 0 1uF C0402 SMD C689 0 47uF 50V C DIP D8 RU3M DIODES DIODES RU3M C687 0 1uF 50V CAP_5 R1782 NC R0603 SMD 1 2 D176 1N4148 1N4148 SMD HTQFP48_HAIER_25VIA U50 TPA3101...

Страница 42: ...您正在使用 ZwCAD 2005 试用版 详情请查阅WWW ZwCAD COM ...

Страница 43: ...u 2en input 8893 Finished these operations system will be into the factory mode menu 8 1 2 How to exit IF want to exit this factory menu please press the botton Exit in the remoter 8 2 Measurements and Adjustments 8 2 1 Version S N Panel Resoution Version The first line is the model Name and the second line is current software version ...

Страница 44: ...l When we found the color in the two models was abnormal Then we can use the function to adjust it automatically Color Temperature The function could adjust the Color Temperature used when debugging 8 2 3 Audio Dolby Banner When turn it ON the model will be in Dolby authentication state ...

Страница 45: ...wnmix output model MTS System used when debugging The parameters only used when debugging no need to be modified 8 2 4 Channel Range Scan The function could make it to search the channels by differentiation the analog and digital channels Single RF Scan Search channels in the frequency scope set in advance ...

Страница 46: ...NA DIGITAL CABLE ANALOG CABLE DIGITAL to search channels used only in project debugging Tuner Diagnostic Project debugging setting used to inspect the audio function 8 2 5Gamma Gamma Bright GAMMA0 8 Middle default settings in the program Dark GAMMA1 2 ...

Страница 47: ...djust the backlight 8 2 7 Function Burning Mode Turn it ON to enter the aging model This is for factory run in testing The screen would display red green blue and black screen repeatedly Each color screen could be exam at that time ...

Страница 48: ...42 Clean Storage The function could make the model turn back to the factory default setting ...

Страница 49: ...mode is set Switch to otger channel and verify if the same problem happens Press VOL button to see of he problem can be solved Poor sound Verufy if sound system is correct Refer to some chapter for adjust No picture in some channel Verify 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 s...

Страница 50: ...for 12V Check F1 and peripheral power supply Check E33 470μF 16V for 5V F1 is damaged Were those LDO U10 U13 U16 U18 U19 etc worked normal OK Turn on the TV set By button or remote control Check power supply net follow F1 Check U6 MCU 1 Power supply U7 U9 2 Reset signal 3 Crystal LDO was damaged or the loader is in short circuit OK Check U1 for 5V output Change U1 MP1410ES LF or D17 SK34A SMA Chec...

Страница 51: ...k the input Source Change Source input Check the input output Of IC U13 of Main B D Re soldering or change IC U13 Check the input output Of IC U55 of Main B D Re soldering or change IC U55 Check the input output Of IC U2 of Main B D Re soldering or change IC U2 Check the Speaker Change the Speaker Check the Sperker wire ...

Страница 52: ...el Check the backlight B D Change the backlight B D Check the input output of jack CN3 of Main B D Re soldering or change IC UA1 and RNA1 17 Check the input output of Jack CN4 of Main B D Re soldering or change IC U13 Change the panel Change the Panel wire Check the Panel wire ...

Страница 53: ...t Awful environment and something electric enter into LCD Mis align between TCP and Panel Panel failure TCP failure Failure Mode Part Name Description Phenomena Failure cause Dot Defect Bright dot dark dot in pannel Incoming Inspection Standard Polarizer Bubble Bladder in Polarizer Bladder between Polarizer and top glass Polarizer Scratch Polarizer Scratch Tine or rigidity arose Panel or Polarlzer...

Страница 54: ...inside LCD pannel Circuit Abnormal Color Only color abnormal 1 Chip lose action 2 IC short or jointion bad 3 Pannel and vsc connect bad Failure Mode Part Name Description Phenomena Failure cause Mechanlcal Nolse When turn panel appear cacophony Caused by Mechanica noise of backlight unit Ripple Connectric circle Causeed by between mechanism and pannel B L off B L lose action Connect badness betwee...

Страница 55: ... power too much F M F M in B L white balck Rotundity or wirelike F M in B L unit Failure Mode Part Name Description Phenomena Failure cause 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 Mechanlcal or B L Mount hole Lack screw or screw damage Lack screw Screw damage ...

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