Haier HLC22R1 - 22" LCD TV Service Manual Download Page 31

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1.25 x (1+180/110) = 3.3V

0.8 x (1+1K/2K) = 1.2V

1.25 x (1+162/150) = 2.6V

Low ESR

VTT FOR DDR TERMINATOR
MEM_VREF FOR DDR AND MT5381 VREF

DV10

+5VSB
+3V3SB

MEM_VREF
VTT

AV33
+12V

GND

DDRV

MEM_VREF

GND

1,3,4,5,6,7,8,9,10,11,12,13,14

DV10

+5VSB

1,9,11

+3V3SB

1,4,7,8,9

MEM_VREF

VTT

AV33

3,5,8,9,13

+12V

1,5,8,9,14

DDRV

6,7

+5V

+3V3SB

+5VSB

DV33

+12V

DV10

DDRV

+5V

AV33

DV33

DDRV

VTT

CE593

470uF/16v

C330UF25V/D8H14

R956

150_1%

R43
1.5K

CB12
0.1uF

L134

CB37

0.1uF_DNS

CE11
220uF/16v

R10
110_1%

R7
2K_1%

CB10
0.1uF

R519
100K

R1
110_1%

CB64
0.1uF

U11

LT1084 TO-252-3

ADJ/GND

OUT

R11
180_1%

C301
0.1uF

R47
100K 1%

CE33

470uF/16V

C330UF25V/D8H14

CB33

0.1uF

R5
1K_1%

CE7
47uF/16v

CE17

100uF/16v

C302
NC

R2030
100K 1%

CE15
100uF/16v

CB5
0.1uF

AZ1117/adj

ADJ/GND

OUT

CB42
10nF

U3
AP1534/SOP-8

SOP8/SMD

OCSET

Vcc

O/P

Vss

CE10
47uF/16v

CB573
0.1uF

RT9199

1
2
3
4

VIN
GND
REFEN
VOUT

VCNTL

CE9
470uF/16V

C330UF25V/D8H14

CE611
22uF/16v

R3
180_1%

CE1

100uF/16v

R518
3K

R958
162_1%

AZ1117/adj

ADJ/GND

OUT

CE2
100uF/16v

27uH/POWER CHOKE

CB574
0.1uF

CE579
470uF/16v

C330UF25V/D8H14

CB6
0.1uF

D95
SCHOTTKY DIODE/B340A

Summary of Contents for HLC22R1 - 22" LCD TV

Page 1: ...o 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 Order No TV0902S0027V0 COLOR TV Model No HLC22R1 CHASSIS MTK5380LC 2009 Qingdao Electronics limited company All rights reserved Unautho...

Page 2: ...the adhesive tape 12 4 4 Remove the Terminal Bracket 12 4 5 Remove the power module 13 4 6 Remove the Main board 13 4 7 Remove the small power board 13 4 8 Remove the speaker 13 4 9 Remove the remote control board 13 5 Installation Instructions 14 5 1 External Equipment Connections 14 5 2 HDMI Connections 16 6 Operation Instructions 19 6 1 Front Panel Controls 19 6 2 Back Panel Controls 19 6 3 Uni...

Page 3: ...nter into Service Mode 37 8 1 2 How to exit 37 8 2 Measurements and Adjustments 37 9 Trouble shooting 43 9 1 Simple check 43 9 2 Power Supply Board failure check 44 9 3 Main board failure check 45 9 4 Pannel failure 47 ...

Page 4: ...t 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 E...

Page 5: ... insulation resistance is less than M ohm the inspection repair should be required If you have not the 500V insulation resistance meter use a Tester External exposure metal Antenna terminal Headphone jack 1 2 8 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 ba...

Page 6: ... Model HLC22R1 Screen size 21 6inch Aspect ratio 16 9 Resolution 1366 768 Contrast Ratio 1000 1 Angel of view H 170 V 160 Color display 16 7M OSD language English Color system ATSC NTSC Color Temperature Cold Standard Warm Audio output power Built in W 3W 2 Power Consmption in Standby 1W Total power input W 50W Voltage range V 120V 10 V Power frequency Hz 60HZ Time of sleep timer MINS 240Min Net w...

Page 7: ... Board 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 Power connectors CN3 CN5 CN3 CN5 A Board B Board C C DVD player ...

Page 8: ...gth of TFT LCD Panel s backlight through this connector Keypad and remote connector CN2 Pin number Signal name Description 1 IR_IN IR 2 CPU5V 5V 3 LED_G LAMP GREEN 4 GND GND 5 LED_R LAMPRED 6 K7 POWER 7 K6 MENU 8 K5 P_ 9 K4 P 10 K3 V_ 11 K2 V 12 K1 SOURCE Speaker connector CN1 Pin number Signal name Description 1 LSPK LSPK 2 GND GND 3 GND GND 4 RSPK RSPK DVD VIDEO Connector CN6 Pin number Signal n...

Page 9: ...l name Description 1 LI YPBPR1L_IN 2 RI YPBPR1R_IN 3 GND GND Other connectors CN19 to Upgrade the program of MTK5380LC U13 AND FLASH U17 U0TX 3V3SB U0RX J3 4x1 W HOUSING DIP4 W H P2 0 1 2 3 4 3 3 Power Board 3 3 1 Function Description Supply power for Main board Panel 3 3 2Connectordefinition INPUT CONNECTOR CN6 CN10 Signal name ...

Page 10: ... 6 GND Ground 7 A0N LVDS EVEN 0 Signal 8 A0P LVDS EVEN 0 Signal 9 A1N LVDS EVEN 1 Signal 10 A1P LVDS EVEN 1 Signal 11 A2N LVDS EVEN 2 Signal 12 A2P LVDS EVEN 2 Signal 13 14 GND Ground 15 CK1N LVDS EVEN Clock Signal 16 CK1P LVDS EVEN Clock Signal 17 A3N LVDS EVEN 3 Signal 18 A3P LVDS EVEN 3 Signal 19 A4N LVDS ODD 0 Signal 20 A4P LVDS ODD 0 Signal 21 A5N LVDS ODD 1 Signal C M O V 2 1 6 B 1 L 01 ...

Page 11: ...GND Ground 7 12 15 16 17 18 LVDS EVEN LVDS EVEN Signal 19 24 27 28 29 30 LVDS ODD LVDS ODD Signal 4 Disassemble and assemble 22 A5P LVDS ODD 1 Signal 23 A6N LVDS ODD 2 Signal 24 A6P LVDS ODD 2 Signal 25 26 GND Ground 27 CK2N LVDS ODD Clock Signal 28 CK2P LVDS ODD Clock Signal 29 A7N LVDS ODD 3 Signal 30 A7P LVDS ODD 3 Signal ...

Page 12: ... ２ＴｈｅｓｅｃｏｎｄｏｆＴＶｔｅａｒｄｏｗｎＴｅａｒｉｎｇｄｏｗｎｔｈｅｐｌａｓｔｉｃｆｒｏｎｔＣａｂｉｎｅｔ１３１ＴｈｅｔｈｉｒｄｏｆＴＶｔｅａｒｄｏｗｎＴｅａｒｉｎｇｄｏｗｎｔｈｅｐａｎｅｌ１３１ＴｈｅｔｈｉｒｄｏｆＴＶｔｅａｒｄｏｗｎＴｅａｒｉｎｇｄｏｗｎｔｈｅｐａｎｅｌ１３２ＴｈｅｔｈｉｒｄｏｆＴＶｔｅａｒｄｏｗｎＴｅａｒｉｎｇｄｏｗｎｔｈｅＰａｎｅｌ１３２ＴｈｅｔｈｉｒｄｏｆＴＶｔｅａｒｄｏｗｎＴｅａｒｉｎｇｄｏｗｎｔｈｅＰａｎｅｌ１４ＴｈｅｆｏｕｒｔｈｏｆＴＶｔｅａｒｄｏｗｎＴｅａｒｉｎｇｄｏｗｎｔｈｅＰｏｗｅｒＳｕｐｐｌｙ１４ＴｈｅｆｏｕｒｔｈｏｆＴＶｔｅａｒｄｏｗｎＴｅａｒｉｎｇｄｏｗｎｔｈｅＰｏｗｅｒＳｕｐｐｌｙ１５...

Page 14: ...picture quality from an antenna in a poor signal area install a signal amplifier If you need to split the antenna signal to connect two TVs install a two way splitter 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 of some different ways to connect y...

Page 15: ...e may be noise associated with the resolution vertical pattern contrast or brightness in PC mode If noise is present change the PC mode to another resolution change the refresh rate to another rate or adjust the brightness and contrast on the menu until the picture is clear If the refresh rate of the PC graphic card can not be changed change the PC graphic card or consult the manufacturer of the P...

Page 16: ...e box remote control Connection Option 2 1 Connect the audio and video cables from the Cable Box s output jacks to the TV input jacks as shown in the figure When connecting the TV to a Cable Box match the jack colors Video yellow Audio Left white and Audio Right red 2 Select the input source by using the button on the remote control 3 Select your desired channel with the remote control for cable b...

Page 17: ...pplied 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 left side of HDMI port How To Use If the source device supports Auto DVI function the output resolution of the source device will be automatically set to 1280x720p If the source device does not su...

Page 18: ...the AC cord plug into a standard polarized AC outlet NOTES 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 cut the blade It is the user s responsibility to have an electrician replace the obsolete outlet If you cause a static discharge when touchin...

Page 19: ...te control Do not put anything near the sensor which may block the remote control signal COMPONENT IN Pr Pb Y ATN IN R AUDIO L R AUDIO IN L PCAUDIOIN VGA IN USB HDMI S VIDEO IN VIDEO 1 ANT IN Antenna Input Connect cable or antenna signals to the TV either directly or through your cable box 2 Headphone jack Headphone audio output terminal 3 Audio in Connect audio output from an external device to t...

Page 20: ... 25 Press to change the aspect ratio 26 Press to change a channel 27 Press to select digital channels For example to enter 54 3 press 54 and 3 28 Press to jump back and forth between two channels 29 Press to scan through channels To scan quickly between the last two channels press and hold down either 30 Exit On Screen Display 31 Accesses the highlighted item in the on screen menu 32 Press to disp...

Page 21: ... 7 Electrical parts 7 1 Block diagram 7 2 Circuit Diagram HDMI1 VGA YPbPr S Video tuner Composite MT 5 3 8 0 LC Main IC YPbPr Composite L R VGA P11 L R DDR Flash TDA1517 P A N E L USB LVDS EEPROM I2C Bus ...

Page 22: ...11 SW_POWER GND SW_POWER DVD_IR OIRI 7 GND 2 3 4 5 6 7 8 9 10 11 12 13 14 3V3SB 2 4 7 8 9 OPCTRL3 4 5VSB 2 9 11 ADIN2 4 12V 2 5 8 9 14 ADIN1 4 BL_ON OFF 9 DIMMING 9 GPIO_3 4 PB1_IN 10 PR1_IN 10 Y1_IN 10 OPWRSB 4 GPIO_ 5 11 4 8 9 14 3V3SB DC 12V 5VSB DC 12V 3V3SB 5V 5V_DVD 3V3SB 5VSB DC 12V 12V 5VSB 5V 5VSB 3V3SB 3V3SB R1707 5 6K R46 NC Q53 2N3904 SOT23 SMD 1 3 2 L151 10uH 5A_6A L5 9 CN5 5PIN_2 0 3...

Page 23: ...0 FB C692 2 2nF CE631 100uF 16v R1757 NS 10K R1755 5 1K R1783 3 9K 8 2K D16 NS 1N4148 R1753 33K R1778 3 9k FB71 FB R1616 1K C668 10uF 10v C0805 SMD R298 5 1K CE25 470uF 16V C330UF25V D8H14 U55A NJM4558 OPA 3 2 1 8 4 D15 1N4148 C670 10uF 10v C0805 SMD C650 0 1uF T74 C643 120pF C0603 SMD CE3 47uF 16v R308 NS 51K R1644 10k C694 10uF 10v C0805 SMD CE640 22uF 16v CE644 220uF 16v C220UF10V D6H11 Q60 2N3...

Page 24: ..._L 12 AIN2_R 11 AR1 14 AL1 14 MUTE 8 14 AV33 2 3 5 8 9 ASPDIF 10 12V 1 2 5 8 9 14 AOLRCK 7 AOBCK 7 GPIO_ 5 11 1 4 8 9 14 OSCL0 4 OSDA0 4 OPCTRL1 4 11 CEC 4 8 3V3SB 1 2 4 7 8 9 HPDET 14 AIN3_L 10 AIN3_R 10 GPIO_12 4 AV33 AV33 AV33 AV33 AV33 CB171 0 1uF U13G MT5380 SMD LQFP 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 A...

Page 25: ...DDRV DDRV VTT VTT RA6 75 CA3 0 1uF CA23 4 7uF RA10 NS 75 RNA1 47x4 0402 1 2 3 4 5 6 7 8 RNA10 47x4 0402 RN0402 SMD 1 2 3 4 5 6 7 8 RNA17 75x4 1 2 3 4 5 6 7 8 CA20 0 1uF CA5 0 1uF RA8 75 RNA4 47x4 0402 1 2 3 4 5 6 7 8 RA7 75 RNA6 47x4 0402 1 2 3 4 5 6 7 8 RA14 100 CA27 0 1uF UA1 16M x 16 DDR TSOP 66 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 3...

Page 26: ... R190 20K 33K C535 47nF C663 10uF 10v C0805 SMD R1591 47 C534 47nF R1587 100 R1594 27 T61 C152 4 7uF R1592 100 C459 47pF TP51 R1525 47 T63 D147 ESD_0402_10pF 1 2 R1560 100 CB163 0 1uF CB162 0 1uF R1562 47 D146 ESD_0402_10pF 1 2 R1598 27 R0603 SMD C151 1uF D148 ESD_0402_10pF 1 2 CB979 0 1uF C664 10uF 10v C0805 SMD TP52 TP63 R1215 0R D145 ESD_0402_10pF 1 2 C149 1uF D104 ESD_0402_10pF 1 2 U13F MT5380...

Page 27: ...7 ESD_0402_10pF 1 2 R164 2K R180 100 C661 10uF 10v C0805 SMD R105 10K R101 10K T31 C145 NS 0 1uF R24 10K R170 2K C134 5pF C135 10nF D31 ESD_0402_10pF 1 2 R169 68 R160 0R R181 0R R171 75 R182 10K C137 5pF R161 0R QF6 2N7002 SOT23 SMD 1 3 2 C136 10nF P11 SLIM_phonejack 1 2 3 4 5 6 7 HP GND NC NC L R L R106 nc D23 ESD_0402_10pF 1 2 C141 5pF R196 0R R166 100 C662 10uF 10v C0805 SMD CB161 0 1uF R186 10...

Page 28: ...F C351 10nF C349 4 7nF D105 ESD_0402_10pF C0402 SMD 1 2 C592 4 7nF C0603 SMD R1635 100 T67 Y C P69 RCA2X3 AV SV 8 7 4 6 5 1 3 2 11 12 10 9 R1639 100 R1184 68 C353 18pF R1640 75 R1636 68 T69 D157 ESD_0402_10pF 1 2 R153 20K 33K D160 ESD_0402_10pF C0402 SMD 1 2 R1203 75 D156 ESD_0402_10pF 1 2 C357 10nF R1189 100 T25 C116 1uF T75 CB160 0 1uF C600 10nF C598 10nF C660 10uF 10v C0805 SMD C361 10nF D158 E...

Page 29: ... 10v C0805 SMD D204 ESD_0402_10pF 1 2 R96 47K E6 47uF 16V NC R625 4 7K L142 FB U2 TPA1517 TDA1517P 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 IN1 SGND SVRR OUT1 GND OUT2 VPP MUTE IN2 GND GND GND GND GND GND GND GND GND GND GND D197 1 2 T2 C603 0 1uF D4 1N4148 T84 Q63 2N3904 NC 1 3 2 C24 1uF T92 T83 D199 1 2 R529 10K D207 1 2 R41 10K E1 470uF 16V C330UF25V D8H14 Q6 2N3904 1 3 2 R98 100K CB1...

Page 30: ...55 254 93 POCE0_ POOE_ PDD0 PDD1 U0RX U0TX JTMS JTRST_ JTCK JTDO JTDI OIRI T8 R1209 0R R1257 NS 4 7K R45 4 7K R54 10K R61 10K T7 U17 M25L3205D 1 2 3 4 5 6 7 8 S_ Q W_ VPP VSS D C HOLD_ VCC R1227 NS 4 7K CB452 0 1uF T9 CB52 0 1uF R197 NS 10K RN5 10Kx4 1 2 3 4 5 6 7 8 CA36 4 7uF CA37 0 1uF CB53 0 1uF CA39 0 1uF C45 1uF T23 T10 CA41 0 1uF R1226 NS 4 7K R56 33 R1208 0R CB55 0 1uF R200 NC C46 1uF R58 1...

Page 31: ... 220uF 16v R10 110_1 R7 2K_1 CB10 0 1uF R519 100K R1 110_1 CB64 0 1uF U11 LT1084 TO 252 3 3 1 2 IN ADJ GND OUT R11 180_1 C301 0 1uF R47 100K 1 CE33 470uF 16V C330UF25V D8H14 CB33 0 1uF R5 1K_1 CE7 47uF 16v CE17 100uF 16v C302 NC R2030 100K 1 CE15 100uF 16v CB5 0 1uF U6 AZ1117 adj 1 2 3 ADJ GND OUT IN CB42 10nF U3 AP1534 SOP 8 SOP8 SMD 1 2 3 4 5 6 7 8 FB EN OCSET Vcc O P O P Vss Vss CE10 47uF 16v C...

Page 32: ... 12V AV33 AV33 5VSB 3V3SB DV33 5V 5V 5V 12V 5V LVDSVDD LVDSVDD 3V3SB CB218 0 1uF TP45 T5 CB155 0 1uF CB216 0 1uF TP46 T6 JP10 FB 1206 CB455 0 1uF_DNS R123 100K CE72 470uF 16v C330UF25V D8H14 R401 10K Q28 2N3904 1 3 2 C85 1uF U13C MT5380 SMD LQFP 244 243 242 241 239 238 237 236 235 234 233 232 230 229 228 227 226 225 224 223 222 231 240 219 220 221 A0N A0P A1N A1P A2N A2P CK1N CK1P A3N A3P A4N A4P ...

Page 33: ...2 HOLE GND 2 3 4 5 9 8 7 6 1 2 3 4 5 9 8 7 6 1 R28 10K R52 NC TP34 C21 5pF 20pF R22 47K R198 10K R40 4 7K R2021 0R NC C22 1uF R27 1 H3 HOLE GND 2 3 4 5 9 8 7 6 1 2 3 4 5 9 8 7 6 1 FB17 FB Q1 2N3904 1 3 2 R199 NC R25 390 CB70 0 1uF R21 220 Y1 60MHz R30 33 R35 NC H4 HOLE GND 2 3 4 5 9 8 7 6 1 2 3 4 5 9 8 7 6 1 CB73 0 1uF D1 1N4148 U14 EEPROM 24C16 1 2 3 4 5 6 7 8 NC NC NC GND SDA SCL WP VCC FB18 FB ...

Page 34: ...8 10 AV25 5 12 12V 1 2 5 8 9 14 5V AV33 AV25 5V AV12 AV25 R12 110_1 U10 AZ1117 adj 1 2 3 ADJ GND OUT IN CB32 0 1uF R14 180_1 CB228 0 1uF R19 0R C575 1uF U7 AZ1117 adj 1 2 3 ADJ GND OUT IN CB229 0 1uF CE19 470uF 16V C330UF25V D8H14 CE22 100uF 16v C573 1uF CE30 100uF 16v CE28 100uF 16v CE592 100uF 16v U41 AZ1117 adj 1 2 3 ADJ GND OUT IN CB18 0 1uF R71 110_1 R70 110_1 CB23 0 1uF C572 1uF R17 110_1 ...

Page 35: ... C42 10nF CB86 0 1uF NC C0402 SMD C41 1uF CE38 100uF 16v R34 5 1K 1 C148 10nF T12 FB34 FB FB33 NS FB FB60 NS FB R2040 0R L25 220nH R2025 NC 4 7K C147 27pF C57 4 7uF R168 NC 10K C31 4 7uF R188 0R NC T57 F2 Little 1206L110 C BEAD SMD 1206 T22 CB197 0 1uF L12 390nH FB48 FB NC FB19 FB FB61 NS FB R2038 0R NC CB137 0 1uF CE847 10uF 16v C38 33pF C108 NC 330nF T16 R2024 10K C209 10nF TP60 R2033 0R CB1004 ...

Page 36: ...o w e r S u p p l y 7 8 LVDS wire Speaker wire 9 Speaker 10 11 Combination Wire 12 R e m o t e C o n t r o l B o a r d A s s e m b l y 13 Keypad Assembly 0090701136 Power cord 14 DVD Keypad Assembly Workout Auditing Standard ization Approve brand customer export country special technique document number special number H a i e r t y p e customer type AMERICA HAC Haier 0 0 9 0 4 0 3 2 1 1 0090719615...

Page 37: ...nput 8893 3rd press ok 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 ...

Page 38: ...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 ...

Page 39: ...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 ...

Page 40: ...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 ...

Page 41: ...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 ...

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

Page 43: ...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...

Page 44: ... 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 Check L9 47μH It s normal but the voltage is high It s normal but the voltage is Low Check Pin No 4 of U1 MP1410 ES or change U1 E33 was damaged or the loader is in short circuit Y N Y N N Y Y N Y N Y N 9 2 Power Su...

Page 45: ...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 ...

Page 46: ...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 ...

Page 47: ...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...

Page 48: ...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...

Page 49: ... 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 ...

Page 50: ...50 Sincere Forever ...

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