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Haier L32K1, Service Manual

The Haier L32K1 Owner's Manual is a comprehensive guide that provides detailed instructions on setting up and using this sleek and high-performing product. You can conveniently download this manual for free from 88.208.23.73:8080, ensuring a hassle-free experience with your Haier L32K1.

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A

A

A

A

TO:AMP

LINE_IN

HPONE/AMP_IN

AV_OUT

Need fine tune resistance

Option

For 5

　

V detect

USB_POWER

USB_POWER

DVD_POWER

DVD_DET

AV3_DET

SYC1 DET

YPBPR0_DET

YPBPR1_DET

AV1_DET

MT5380P1-V2

V1

C

14

15

Wednesday, January 30, 2008

LINE OUT

NUSTC_5380P1_V2:HAIER

Title

Size

Document Number

Rev

Date:

Sheet

of

Drawn

MUTE

MUTE

AR2_OUT/LINE

AL2_OUT/LINE

HPVDD

AVDD

DVDD

MVDD33

HPOL

HPOR

PGA1OUTR

PGA1OUTL

AR1

PGA1OU

T

R

MUTE#

RESET#

PGA1OU

T

L

ADCOUTL
ADCOUTR

AI

N

1R

AI

N

1L

HPVDD

INP

U

T0

L

INP

U

T0

R

VC

M

PGA

AVD

D

PGA0OUTL

HPOL

PGA0OUTR

AI

N

3R

AI

N

4L

AI

N

4R

AI

N

3L

SC

L34

MVDD33

SD

A34

MGPIO4

8292_MGPIO4

DVDD

VCM33

HPOR

RESET#

VCM33

VCMPGA

MUTE#

GPIO_1

HPDET#

HPDET

MUTE

PGA0OUTL

AL1_OUT/AMP

AR1_OUT/AMP

MUTE

AR1_OUT/AMP
AL1_OUT/AMP

GPIO_1

AR2

HPDET#

+5V

OSCL0

+12V

AL1

+9V

OSDA0

AR1

DV33

AL2

CVBS_OUT

MUTE

AR2_OUT/LINE

CVBS_OUT

AL2_OUT/LINE

INP

U

T1

L

AR2

AL1

SY1R_IN

HDMIL_IN

VGAR_IN

SY1L_IN

VGAL_IN

HDMIR_IN

ADCOUTR

AIN0_R

AIN0_L

ADCOUTL

MGPIO3

8292_MGPIO3

MGPIO3

8292_MGPIO3

MGPIO4

8292_MGPIO4

PGA0OUTR

8292_MGPIO5

AV3L_IN

AV3R_IN

AI

N

5L

AI

N

5R

AIN1L

AIN1R

AIN4R

AIN4L

AIN5L

AIN5R

AIN3L

AIN3R

8292_MGPIO6

8292_MGPIO7

8292_MGPIO8

MGPIO7

8292_MGPIO7

MGPIO6

8292_MGPIO6

MGPIO8

8292_MGPIO8

AIN6R

AIN6L

DVD_R_IN

DVD_L_IN

AI

N

6R

AI

N

6L

HPDET

HPOUTR

HPOUTL

OFF_MUTE

MUTE

MUTE

OFF_MUTE

HPOUTR

MUTE

HPOUTL

MUTE

MGPIO2

8292_MGPIO2

MGPIO1

8292_MGPIO1

MGPIO2

8292_MGPIO2

MGPIO1

8292_MGPIO1

DVDD

MGPIO0

8292_MGPIO0

OSDA0

OSCL0

AL2

INP

U

T1

R

HPGND

GND

AGND

DGND

GND

MGND33

MGPIO0

8292_MGPIO0

MGPIO5

8292_MGPIO5

AR1_OUT/AMP

15

MUTE

15

AL1

13,15

AR1

13,15

DV33

2,4,7,9

AR2

13

+9V

3

GND

1,2,3,4,5,6,7,8,9,10,11,12,13,15

GPIO_1

4

CVBS_OUT

12

OSDA0

4,13

+12V

1,3,9,10,15

HPDET#

13

+5V

1,2,3,5,8,9,10,13,15

OSCL0

4,13

AL2

13

HDMIR_IN

11

VGAR_IN

11

HDMIL_IN

11

SY1L_IN

12

VGAL_IN

11

SY1R_IN

12

AIN0_L

13

AIN0_R

13

8292_MGPIO3

5

8292_MGPIO4

5

AV3R_IN

12

AV3L_IN

12

8292_MGPIO7

10

8292_MGPIO6

12

8292_MGPIO8

10

DVD/DVBT/USB_R_IN

10

DVD/DVBT/USB_L_IN

10

MUTE

15

OFF_MUTE

13

AL1_OUT/AMP

8292_MGPIO1

10

8292_MGPIO2

10

DVDD

5

8292_MGPIO0

10

8292_MGPIO5

15

DVDD

AVDD

HPVDD

DV33

MVDD33

DV33

+9V

+9V

DV33

DV33

DVDD

DVDD

+5V

+12V

DVDD

DV33

DVDD

R273

10K

R0603/SMD

R1804

10K

R0603/SMD

R68
10K

R0603/SMD

R1884

10K

R0603/SMD

+

CE637

10uF/16V

C10UF16V/D4H7

C684
4.7nF

C0603/SMD

R1861

10K

R0603/SMD

C654

4.7uF/6.3V

C0603/SMD

Q11
2N3906

SOT23/SMD

1

3

2

R1768

20K

R0603/SMD

R50

471

C705

4.7uF/6.3V

C0603/SMD

C56
4.7nF

C0603/SMD

R1646

1K

R0603/SMD

Q13

2SD2653K

SOT23/SMD

1

3

2

red

y

w

P69

RCA3X1

RCA3/HAIER

1

4

8

6

7

5

2

3

Q14

2SD2653K

SOT23/SMD

1

3

2

+

CE615
10uF/16V

C10UF16V/D4H7

C26
1uF

C0603/SMD

C703

4.7uF/6.3V

C0603/SMD

R91

0

R0603/SMD

R1862

10K

R0603/SMD

+

CE638

10uF/16V

C10UF16V/D4H7

R154

0

R0603/SMD

C647

10uF/6.3V

R1206

Q65

2SD2653K

SOT23/SMD

1

3

2

+

CE25
220uF/16V

C330UF25V/D8H14

R1770

20K

R0603/SMD

C655

4.7uF/6.3V

C0603/SMD

+

CE21

220uF/16V

C220UF16V/D6H11

C659

4.7uF/6.3V

C0603/SMD

+

CE20

220uF/16v

C220UF16V/D6H11

R1800

10K

R0603/SMD

C40
1uF

C0603/SMD

C167

2.2nF

R64

R1766

20K

R0603/SMD

CB981
0.1uF

C0603/SMD

R1767

20K

R0603/SMD

D16
NS/1N4148

1N4148/SMD

C170

10uF/6.3V

R1206

C702

4.7uF/6.3V

C0603/SMD

C660

4.7uF/6.3V

C0603/SMD

C35

1uF

C0603/SMD

R1867

20K

R0603/SMD

C585
1uF

C0603/SMD

R279

470

R0603/SMD

R1616

1K

R0603/SMD

R1808

10K

R0603/SMD

R298

5.1K

R0603/SMD

R65
10K

R0603/SMD

C648

10uF/6.3V

R1206

C656

4.7uF/6.3V

C0603/SMD

R1801

470

R0603/SMD

L11

FB

BEAD/SMD/0603

Q66

2SD2653K

SOT23/SMD

1

3

2

C37
NS/1uF

C0603/SMD

C168

10uF/6.3V

R1206

D15

1N4148

1N4148/SMD

C50
1uF

C0603/SMD

R69

0

R0603/SMD

+

CE93

10uF/16V

C10UF16V/D4H7

R1864

20K

R0603/SMD

R308

NS/51K

R0603/SMD

R55

471

R1803

10K

R0603/SMD

+

CE94

10uF/16V

C10UF16V/D4H7

R1765

20K

R0603/SMD

R151

0

R0603/SMD

R1644
10k

R0603/SMD

CB985
0.1uF

C0603/SMD

Q73

2SD2653K

SOT23/SMD

1

3

2

C657

4.7uF/6.3V

C0603/SMD

C649

10uF/6.3V

R1206

R1645

47K

R0603/SMD

U16

MT8292

QFN56/SMD/8x8

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

AIN8R
AIN8L
MVDD33
VCM33
MGND33
ADCOUTL
ADCOUTR
HPOUTL
HPGND
HPVDD
HPOUTR
AGND
PGA0OUTL
PGA0OUTR

AVD

D

VC

M

PGA

PGA2OU

T

L

PGA2OU

T

R

PGA1OU

T

L

PGA1OU

T

R

INP

U

T2

R

INP

U

T2

L

INP

U

T0

R

INP

U

T0

L

INP

U

T1

R

INP

U

T1

L

CL

DI

MUTE#

RESET#

GPIO0

GPIO1

GPIO2

GPIO3

GPIO4

DVDD

DGND

GPIO5

GPIO6

GPIO7

GPIO8

GPI

AI

N

1R

AI

N

1L

AI

N

2R

AI

N

2L

AI

N

3R

AI

N

3L

AI

N

4R

AI

N

4L

AI

N

5R

AI

N

5L

AI

N

6R

AI

N

6L

AI

N

7R

AI

N

7L

E-PAD

C683
4.7nF

C0603/SMD

R300
100K

R0603/SMD

C164

2.2nF

CB983
0.1uF

C0603/SMD

C55
4.7nF

C0603/SMD

D202

NS/EZJZ0V800AA

ESD0603/SMD

1

2

R281
47K

R0603/SMD

R1863

10K

R0603/SMD

C601

1uF

C0603/SMD

C38
10uF/10V

C0805/SMD

CB984
0.1uF

C0603/SMD

C587
10uF/10V

C0805/SMD

R1615

1K

R0603/SMD

R

L

P83

PHONE

PHONE/HAIER

3
5
4
2
1

6

7

R1647

100K

R0603/SMD

R1799
47K

R0603/SMD

CB982
0.1uF

C0603/SMD

C171

10uF/6.3V

R1206

Q8
2N3906

SOT23/SMD

1

3

2

R1872

10K

R0603/SMD

C658

4.7uF/6.3V

C0603/SMD

R299

1K

R0603/SMD

R1873

10K

R0603/SMD

R1769

20K

R0603/SMD

C650

10uF/6.3V

R1206

D203

NS/EZJZ0V800AA

ESD0603/SMD

1

2

C165

2.2nF

R282

10K

R0603/SMD

D204

NS/EZJZ0V800AA

ESD0603/SMD

1

2

C15
10uF/10V

C0805/SMD

+

CE614
10uF/16V

C10UF16V/D4H7

C588
1uF

C0603/SMD

C704

4.7uF/6.3V

C0603/SMD

C36
10uF/10V

C0805/SMD

Q46

2N3904

SOT23/SMD

1

3

2

C162
10PF/NC

C0603/SMD

R49

471

+

CE613
10uF/16V

C10UF16V/D4H7

R57

471

C34
1uF

C0603/SMD

R307
100K

R0603/SMD

L10

FB

BEAD/SMD/0603

R309

NS/56K

R0603/SMD

R272
47K

R0603/SMD

L135

FB

BEAD/SMD/0603

C16
10uF/10V

C0805/SMD

C166

2.2nF

R1885

10K

R0603/SMD

C653

4.7uF/6.3V

C0603/SMD

R1798

470

R0603/SMD

L12

FB

BEAD/SMD/0603

R302
4.7K

R0603/SMD

R1807

10K

R0603/SMD

R1802
47K

R0603/SMD

Q72

2SD2653K

SOT23/SMD

1

3

2

R1866

20K

R0603/SMD

R76

0

R0603/SMD

R270

470

R0603/SMD

C169

10uF/6.3V

R1206

C602

1uF

C0603/SMD

C163
10PF/NC

C0603/SMD

R303

2K

R0603/SMD

CB986
0.1uF

C0603/SMD

D201

NS/EZJZ0V800AA

ESD0603/SMD

1

2

C30
10uF/10V

C0805/SMD

R1865

20K

R0603/SMD

Summary of Contents for L32K1

Page 1: ...1 HL32K MTK5380 Panel T315XW02_VL AU Chassis MTK5380 2008 Haier Electronic Company Limited All rights reserved Unauthorized copying and distribution is a violation of law...

Page 2: ...warnings or cautions to advise non technical individuals of potential dangers in attempting to service a product Products powered b electricity should be serviced or repaired only by experienced profe...

Page 3: ...s 21 5 2 Back panel controls 22 5 3 Setting Up Your Remote Control 23 6 DISASSEMBLY INSTRUCTIONS 24 6 1 THE UNIT 25 6 2 Support Stand Subassembly 26 6 3 Back Cabinet Assembly 26 6 4 Flat Panel Bracket...

Page 4: ...not use your TV near water For example do not use it near a bath tub wash bowl kitchen sink laundry tub in a wet basement or near a swimming pool Cleaning Unplug your TV before cleaning Do not use li...

Page 5: ...from lightning and power line surges Servicing Do not attempt to service your TV yourself because opening or removing covers may expose you to angerous voltage or other hazards Refer all servicing to...

Page 6: ...ransistors which provide exceptionally sharp video quality Occasionally a few non active pixels may appear on the screen as a fixed blue green or red point These non active pixels do not adversely aff...

Page 7: ...7 3 LOCATION OF CONTROLS AND COMPONENTS 3 1 Board Location No Parts number Description A Board Mainboard Assembly B Board Power Supply Board Assembly 3 2 Mainboard Assembly...

Page 8: ...8 3 2 1 Function Description Mainboard Assembly Process signal which incept from exterior equipment then translate into signal that panel can display Signal flowing chart MTk5380...

Page 9: ...Ground 3 5VSB Power of TV standby 4 GND Ground 5 GND Ground 6 12V Power of system 7 12V Power of system Pin number Signal name Description 1 5V Supply the Power of bright and IR receiver 2 IR Receive...

Page 10: ...V Not use Pin number Signal name Pin number Signal name Pin number Signal name 1 LVDS VDD 9 Not use 17 A1P 2 LVDS VDD 10 Not use 18 A1N 3 LVDS VDD 11 Not use 19 A2P 4 LVDS VDD 12 Not use 20 A2N 5 Not...

Page 11: ...NGAL 12 RO 1 N ODD LVDS SINGAL 13 RO 1 P ODD LVDS SINGAL 14 RO 2 N ODD LVDS SINGAL 15 RO 2 P ODD LVDS SINGAL 16 GND GND 17 ROCLK ODD LVDS SINGAL 18 ROCLK ODD LVDS SINGAL 19 GND GND 20 RO 3 N ODD LVDS...

Page 12: ...9 10 GND Ground 11 NC NC 12 BLON BL ON OFF 13 PWM Internal PWM Control 14 NC NC 4 INSTALLATION INSTRUCTIONS 4 1 External Equipment Connections Accessories Antenna Connection Generally speaking to enjo...

Page 13: ...Choose Your Connection There are several ways to connect your television depending on the components you want to connect and the quality of the signal you want to achieve The following are examples o...

Page 14: ...14...

Page 15: ...15...

Page 16: ...16...

Page 17: ...17...

Page 18: ...solution appropriately To get the best picture quality adjust the output resolution of the source device to 1280x720p Select HDMI input source in input source option of Select Main source menu When th...

Page 19: ...19 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...

Page 20: ...20 Power source Removing the table stand and installing a wall mount bracket...

Page 21: ...as left right buttons 4 CH Press to scan through channels 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 o...

Page 22: ...nect digital audio from an external device NOTE In standby mode these ports will not work 8 VIDEO Out Connect the second TV or monitor to the TV s AV OUT 9 AUDIO Out Connect the audio L R cables to th...

Page 23: ...the remote control to shock or liquids Do not use the remote control in an area with high humidity Do not place the remote control in direct sunlight Do not place objects such as furniture between th...

Page 24: ...er indicated with Then remove the Support Stand 2 Remove the Back Cabinet Remove the twelve screws indicated on figure above by Then remove the Back Cabinet from the unit 3 Remove the Mainboard Rmove...

Page 25: ...el Power Supply Board Assembly Harness Assembly Components List NO Name Description Parts number 1 Accessories Assembly 2 Packaging Assembly 3 TV Set 3 1 Support Stand Assembly 3 2 Back Cabinet Assemb...

Page 26: ...n Parts number 2 Support Stand Assembly 3 Bolt SQH 3503RFE Q 6 3 Back Cabinet Assembly 1 2 NO Name Description Parts number 1 Back Cabinet Assembly 2 1 Back Cabinet Subassembly 2 2 Side AV Instruction...

Page 27: ...27 6 4 Flat Panel Bracket Assembly 1 2 Components List NO Name Description Parts number 1 Flat Panel Bracket Assembly 2 Metal Assembly 6 5 Front Cabinet Assembly 1 2 3 2 1 2 2 4...

Page 28: ...oard Assembly 6 6 Harness Assembly 6 6 1 Wire Photo 6 6 2 Components List NO Name Description Parts number 1 Key wire PH 3 800mm PH 3 2 Remote control wire PH 5 300 PH 5 3 Combine wire TJC3 7A 150 TJC...

Page 29: ...7 MEASUREMENTS AND ADJUSTMENTS The way to the factory mode menu 1st press the manu button 2en input 8893 Finished these operations system will be into the factory mode menu 1 Version Info 2 Video 3 Au...

Page 30: ...30 4 Channel 5 Gamma 6 BackLight...

Page 31: ...31 7 Function...

Page 32: ...32 8 BLOCK DIAGRAM AND CIRCUIT DIAGRAM 8 1 BLOCK DIAGRAM 8 2 CIRCUIT DIAGRAM MTK5380...

Page 33: ...TPA1301 U17 U18 5V 12V 0 8 x 1 12K 2 2K 5 1V HDMI2 MT5380P1 V2 V1 C 1 15 Wednesday January 30 2008 INDEX MAIN POWER NUSTC_5380P1_V2 HAIER Title Size Document Number Rev Date Sheet of Drawn 3V3SB 5VSB...

Page 34: ...OP8 SMD 1 2 3 4 5 6 7 8 GND SD VSENSE VREF VDDQ AVIN PVIN VTT R519 100K R0603 SMD R2 2K R0603 SMD R1 110 R0603 SMD CB64 0 1uF C0603 SMD U11 LT1084 TO 252 3 TO 252 3 SMD 3 1 2 IN ADJ GND OUT R11 180 R0...

Page 35: ...1uF C0603 SMD CE96 220uF 16V C220UF10V D6 3H7 R14 180 R0603 SMD CB228 0 1uF C0603 SMD CB197 0 1uF C0603 SMD R19 0 R0603 SMD C575 1uF C0603 SMD CB229 0 1uF C0603 SMD CE19 470uF 16V C470UF16V D10H9 CE22...

Page 36: ...603 SMD C21 5pF C0603 SMD R22 47K R0603 SMD R198 10K R0603 SMD R40 4 7K R0603 SMD C22 1uF C0603 SMD R27 1 R0603 SMD CB2 0 1uF H3 HOLE GND 2 3 4 5 9 8 7 6 1 2 3 4 5 9 8 7 6 1 FB17 FB BEAD SMD 0603 R42...

Page 37: ...AFT NC or IF_AGC Mon NC or B2_Ana_ 5V TU_ 32V GND GND SCL SDA AS B_IF O P D_IF_AGC NC D_IF_O P_1 D_IF_O P_2 CB450 NS 100pF C0603 SMD C41 1uF C0603 SMD C42 0 01uF C0603 SMD C70 10nF C0603 SMD CE38 100...

Page 38: ...03 SMD CA5 0 1uF C0402 SMD RA8 75 R0603 SMD RNA4 47x4 RN0402 SMD 1 2 3 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 C0603 SMD UA1 16M x 16 DDR TSOP 66...

Page 39: ...D R1257 NC 4 7K R0603 SMD R45 4 7K R0603 SMD R54 10K R0603 SMD R61 4 7K R0603 SMD U17 M25P16 NS CASON8 SMD 1 2 3 4 5 6 7 8 S_ Q W_ VPP VSS D C HOLD_ VCC R1703 100R R0603 SMD R1705 100R R0603 SMD R1227...

Page 40: ...C0805 SMD D211 PESD1206Q 140 PESD1206Q 140 SMD 1 2 3 4 5 6 7 8 R2116 68R R2050 0 C720 100nF R2113 100K R2092 100 NC R2065 1K NS R2080 47K C725 100nF CN2 HDMI HAIER 20 21 1 2 3 4 5 6 7 8 9 10 11 12 13...

Page 41: ...9 2N3904 SOT23 SMD 1 3 2 R2106 100 Q29 2N3904 SOT23 SMD 1 3 2 R2096 NS 0 R123 100K R0603 SMD L132 FB R1206 SMD U76 AP1530 SOP 8 SOP8 SMD 1 2 3 4 5 6 7 8 FB EN OCSET Vcc O P O P Vss Vss CE72 100uF 16V...

Page 42: ...363 10nF C0603 SMD C353 15pF C0603 SMD R1640 75 R0603 SMD R1836 10K R0603 SMD R1636 68 R0603 SMD R1878 1K R0603 SMD C636 4 7uF 6 3V C0603 SMD R1842 10K R0603 SMD R36 22 R0603 SMD D157 NS EZJZ0V800AA E...

Page 43: ...FB68 80 100MHz BEAD SMD 0603 C135 10nF C0603 SMD D31 NS EZJZ0V800AA ESD0603 SMD 1 2 R169 68 R0603 SMD R160 0 R0603 SMD R181 0 R0603 SMD R171 75 R0603 SMD R182 10K R0603 SMD C137 5pF C0603 SMD R161 0 R...

Page 44: ...0603 SMD L34 0 L IND SMD 0603 C459 47pF C0603 SMD R1525 47 R0603 SMD R79 100 R0603 SMD D147 NS EZJZ0V800AA ESD0603 SMD 1 2 C111 NS 43pF C0603 SMD w red P80 RCA2X1 RCA2 HAIER 1 3 5 4 2 R1560 100 R0603...

Page 45: ...15 OFF_MUTE 14 AOLRCK 7 AOBCK 7 GPIO_ 4 11 4 8 9 14 15 OPCTRL1 4 11 3V3SB 1 2 4 7 8 9 AR2 14 AL2 14 HPDET 14 AIN3_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...

Page 46: ...16V C220UF16V D6H11 C659 4 7uF 6 3V C0603 SMD CE20 220uF 16v C220UF16V D6H11 R1800 10K R0603 SMD C40 1uF C0603 SMD C167 2 2nF R64 R1766 20K R0603 SMD CB981 0 1uF C0603 SMD R1767 20K R0603 SMD D16 NS...

Page 47: ...4 7K R0603 SMD R1781 4 7K_DNS R0603 SMD C681 0 22uf C0603 SMD 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...

Page 48: ......

Page 49: ...49 10 TROUBLE SHOOTING GUIDE 10 1 Simple check 10 1 1 PDP is not bright 10 1 2 No picture...

Page 50: ...50 First check cables which connect with PSU then check as follows 1 Check input voltage CNA1 2 Check output voltage CND1...

Page 51: ...O picture 2 Check speaker output 10 2 Panel failure Failure Mode Part Name Description Phenomena Failure cause V B D Vertical bar TCP V Dim Virtal gray line Block Defect TCP cracking or cracking Dim o...

Page 52: ...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 Eyewi...

Page 53: ...l Nolse When turn panel appear cacophony Caused by Mechanica noise of backlight unit Ripple Connectric circle Causeed by between mechanism and Panel B L off B L lose action Connect badness between wir...

Page 54: ...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 Mech...

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