LG Electronics LL-15A10 инструкция обслуживания

1 Welcome to LG LCD TV Ame ri c a Canada Philip pin es Europe Midd le-Eas t Af r i c a China As i a CIS Taiwan Au s t r i a LT-15A10 LE-15A 10 LL-15A10[...]

2 3. LCD TV Structure (1) Genera l Specif ica tions (2) Presentat ion for SVC Engineer 1. LCD Techno logy 1) What is TFT LCD ? 2) Struc ture of T FT LCD 3) TFT -LCD Opera ting Mechanism 4) Opera tin g Theor y 5) Str uctu re LC D Mod ule 6) Struc ture of Back lig ht 7) Func tion of Back l ight 8) Ke y Parts ; Col or Filter, Polarizer 2. LCD Market T[...]

3 1) What is TFT LCD ? 2) Struc ture of T FT LCD 3) TFT -LCD Opera ting Mechanism 4) Opera tin g Theor y 5) Str uctu re LC D Mod ule 6) Struc ture of Back lig ht 7) Func tion of Back l ight 8) Ke y Parts ; Col or Filter, Polarizer 1. LCD Technology[...]

4 TFT TRANSISTOR (MOS-FET) GATE V th DRAIN SOURCE GATE DRAIN SOURCE V th TPE When supply over cer tain voltage (Vth) to the GATE, it deliver s informa tion fr om Drai n to So urce SWITCHI NG Charact eristics Compound Transi stor with thin film in ev ery Pixel on IT O. Independ ent on neig hboring Pixe l What is TFT(Thi n Film T ransistor)? TFT Pane[...]

5 Glass Glass - - - - ! ! ! ! Liquid Crys tal Control the amount of light by the A p plying V oltage Back Li ght + " " " " Gate On/Off the TFT - - - - - - White (TFT Off) Black (TFT O n) # # # # Source Transp ort the Data Signal Polarizer $ $ $ $ Pixel A p plying Voltage to the Liquid Crys tal + + + + - - 300 % % % % (Approx....[...]

6 The structure of TFT-LCD is that Li quid Cr y stal is being f ille d between C/F Glass & TFT Gl ass . One Pixel consist s of 3 sub-Pixels(R,G,B) and ac cording to the number of the pixels, Di splay Resolution (SVGA,XGA,etc) is deter mined. The TFT Matrix consists of Data Line (Carry ing display data signal), Gate Line (Carry ing signal for tu[...]

7 HEAT ER Grid 1 Grid 2 Grid 3 Anode Grid 4 GLASS Beam Vacuum Flourescent Deflection Section Electronic Gun ( Braun Tube : Light Emitt ing Compone nt) (TFT-LCD : Non-Ligh t Emi tting Compo nent) Polarizer Glass Panel Polarizer TFT+E lec trode Luminous Source Green COLOR FILT ER Electrode Light(W hite) Liquid Crystal Op eratin g The ory[...]

8 Case Top LCD Panel Diffuser s & Pris ms Light G uide Lamp Support Main Reflector PCB D-IC(on TCP) Housing Lamp Bottom Cover Back li ght As s y Structure of LCD Module # Bottom Plate " $ ! LCM = Case top + LCD panel B/L A ss y + Plate[...]

9 Driving Circuit Data Driver IC Printed PCB Boar d Gate Driver IC Invert er Power Sup ply for Vi deo Signal Common Electrode Bright Dark Gray Pixel Array & Wiri ng Lamp Lamp Invert er Pixel Electro de LC LC Panel B/L Unit Polarize r CF Panel LC TFT Panel Polarize r Lamp Prism Diffu ser Light Guide Refle ctor Dn-1 Dn Dn+1 R G B Structure of LCD[...]

10 Reflector Light G uide Diffuser Bottom Prism Top Prism Diffuser(P rotector) Lamp Housing Plate Supporter main Screw Lamp A ss ’ y Pad Structure of Back Light Un it[...]

11 LCD PANEL Top Prism Bottom Prism Diffuser Light guide (Flat/W edge) Pattern(Dot/Shibo/V-cut) Reflector Lamp Housing(Lamp Reflector) Lamp Diffuser (Protector) St r uct ure of Bac k Light Function on each p art Function o f Back Light Displ ay the lig ht contr olle d by data sig nal Same structur e as bel low di ffuser, Prot ect the top pris m Sam[...]

12 B RG Key Parts : Col or Filter To realize color o f the Display , array Red,Green & Blue co lor paint ben eath U pper Gla ss Panel r egularly i n accord with Pixe l electrode of lower Glass Pan el. ! Kinds of Pixel Array Divide the w hite light from l uminous so urce in to Red, G reen & Blue Glass Pixel White Light ' Delta Array ( S[...]

13 A kind of filter, which polarize light one direction. <Passing> <Block ing> Key Parts : Polarizer Light Polariz er[...]

14 Key Parts : Bac k Light CCFL L A MP (Cold Cathode Fluorescence Lamp ) Inv erter A C 1000V LA MP Can realiz e W hi t e Light Long life time(Appr. 25,000HRS) Simple Brightne ss contro l Small Size Easy to Adhere Back Light Unit,located behind TFT-P anel lower Gla ss, and supplies li ght to the PANEL . Struc ture Demerits Merits Side Guided T ype R[...]

15 Key Parts : Dr ive IC TCP TYPE DRIVER IC (Tape Carrier Package) Supplies the signal from PCB to TFT-PANEL GAT E DRIVER IC(8EA ) : Horizontal Supplies signals f rom Data line to the Ga te of TF T-PA NEL sequentially . Each I C controls 128 l ines in hor izont al. SOURCE DRIVER IC( 5 EA ) : Vert ic al Supplies the Pixel Data from SOU RCE to eac h [...]

16 (1) Compar ison w ith o ther Displa y devices (2) Wor ld Displa y Market Trend (3) LCD TV M arket Trend (4) Guidance of handlin g LCD products (5) Abbrevia tions 2. LCD Mark et Trends[...]

17 Comparison with o ther Displa y devices C P T Normal Flat LCD PDP* VFD** Large Scre en Over 40 ” Full Color Contrast Brightness Resolution View Angle Resp onse Time Basic F unction s : Very Good (Possib le to r ealize) : Good (Hard to realize ) : Bad (Impo ssible to realize) *PDP : Plasma Display Panel **VFD : Vacuum Flourescen t Display[...]

18 World Displa y Market Trend 60” 50” 40” 30” 20” 10” Market 1 Market 2 CRT Projector Market 3 Small AV Sy stem NTPC*** Monitor Large AV Sy stem P D P LCD LCD LCD NTPC : NoteBook PC[...]

19 250 500 1000 2000 4000 7000 0 1000 2000 3000 4000 5000 6000 7000 Volume 2000 2001 2002 2003 2004 2005 Years World M arket LCD TV Source : IDC JAPAN K LG LCD TV Mar ket Trend Worl d Market[...]

20 Color TFT LCD Module is very sensitive both el ectrically a nd physically.Users , therefor e, are re queste d to foll o w the “Gu idance of ha ndli ng col or TFT LCD Mo du le” on th e foll owings . Guidance o f ha ndli ng Color TFT LCD Modu le 1 Be careful no t to make scratch on the polariz er . - S urface of pol arizer is sof t and c an be[...]

21 Ab br e vi a t io n s Abbreviatio ns on LCD Module a nd TV No Terms Full Description 1 ACF Ani s otro p ic Co nd ucti ve F i lm 2 B/L Back Light 3 CCFL Cold Cathod e Fluoresce nt Lamp 4 CF Color Filter 5 CR Contra st Ra tio ( White / Black ) 7 LC Liquid Cry stal 8 LCD Liquid Cry stal Display 9 LCM Liquid Cry stal Module 10 LD Line De fect 11 MNT[...]

22 1) General Specification - Key Value - Specifica tions - Monitor Features - Unique Features 2) Presentatio n for SVC Engine er - Specif ications - Exploded View - Interconnectio n Guide - B lock Diagram - IIC A djus tmen t - MICOM Pinning & Descripti ons - Video Processing - A ud io Processing LG LCD TV[...]

23 Without St and St and t yp e Wall mo unting -. Great Desi gn . Modern St y le . S lim . Free space -. D ual F unc tiona lity . Compu ter M onito r Up to XGA 1024X 768 8 5Hz . Independ ent TV Receiver -. High-Tech . LCD . HD Compatible . Component Input(Optional)-ME . SCA RT Jack(Optional)-EU KEY VALUE General Specifi cations LE/LL/LT-15 A10 Key [...]

24 PC Input Mode Resol ution Horizont al Freq.(KHz) Vertical Freq .)Hz) VGA 640 X 4 80 640 X 4 80 565 X 4 96 640 X 4 80 640 X 4 80 720 X 4 00 31.5kHz 35kHz 37.9kHz 37.5kHz 43.3kHz 31.5kHz 60Hz 67Hz 72Hz 75Hz 85Hz 70Hz SVGA 800 X 6 00 800 X 6 00 800 X 6 00 800 X 6 00 800 X 6 00 832 X 6 24 35.2kHz 37.9kHz 48.1kHz 46.9kHz 53.7kHz 49.7kHz 56Hz 60Hz 72H[...]

25 Soft Touch Co ntrol Conducti ve Rubber Conducti ve Rubber Conducti ve plate Conducti ve plate Soft Tou ch contro l sy stem, LG’s advanced technology , leads cu stomers t o the emo tional satisfact ion. Its main characteris tics are A nti-stat ic functio n w hen touch ing besides softnes s & lu xurious loo king. Cabinet Insulation PCB Insul[...]

26 Specifications *The Li fe Time i s defined as the time a t which brig htness of lam p is 5 0% compar e to th at of initial v alue at the typic al la mp current on condi t ion of cont inuos operatin g at 25+/- 2 C. Presentation for SVC Engineer SYST EM PAL/SECAM-B/G, SECAM -L/L’ PAL/SECAM-B/G,D/K, PAL-I PAL/SECAM-B,D,I, NT SC,4.43AV LL-15A10 LE[...]

27 CONTROL PCB MAIN PCB INVERTER Connector b etween Main P CB and LCM SPEAK ER (R)[...]

28 Interconnection Guide LCD Module Main PCB Control PCB I n v e r t e r P001B P401 P502 CN1 P801 CN2 CN3 P601 P602 To SPK Presentation for SVC Engineer[...]

29 Adjustment in SVC mode FP 21 NP 89 SP 38 S1VOL 105 S2VOL 105 50 N AV1 RD 80 GD 80 BD 80 RO 32 GO 32 BO 32 S-B 23 PC CP 3 50 N AV1 “SVC” k ey , or “OK” +”OK ” “YELLOW ” ke y SVC mod e ADJUSTMEN T mode FM P rescaler 21 21 SECAM Prescaler 38 38 , S2 VOL 105 105 NICAM Prescaler 89 89 S1 VOL 105 105 Initial Data List (PA L) Drive Red [...]

30 1 INVERTER 7 RESERVED Optio n ON Fo rcible MONO Mo de On l y TUN ISIA 1 0 INVERTER 1 3 RESERVED 4 ARAB URDU 5 E+CHINA OPTION CODE FUCTION REMARK VOL 0 Slow VOLUME Chan ge Normal Curv e 1 Ste ep V OLUME Chan ge Rushed Curve 0 LANG 0 ENG O nly 1 EU-5EA 2E U E T C 3 FARSI OPTION - 1 OPTION - 2 ACM S 0 No Channel Name Memor y 1 Channel Name Memor y [...]

31 Video I nput E/P Audi o Processor MSP34 10D Video Decoder VPC32 30D Vide o Scaler MX88L 284 EPROM for OSD SC7861 02A Audi o AMP LA4282 Y/C R L V Pb Pr Y Tune r & IF TAUC-S120D TAFC- M130D TAF C- Z140D MIC O M+T X T SDA 555 EPROM 24C16 A/D Conv erter AD9884 DC/DC Power IC SI786 Power 12V/3 A ANT. Componen t Input (or SCART JACK) PC/D-TV Input[...]

32 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 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 MX-CS MX-DA A-MU TE MX-CK KIN4 RGB S W S-DET INV_BRT VDD3.3 VSS VDD2.5 FB B G R VDDA2.5 VSS XIN XOUT RESET 3230RESET AD-PD VDD3.3 VSS INV-PW R M-PW R 6 MHz IIC Control Soft Touch K ey Input MX IC cont[...]

33 1 SCL0 2 SDA0 .IIC Control w ith EEPROM 3 SCL1 4 SDA1 .IIC control w ith other Dev ices(TUNER,VPC 3230,MS P3410,etc) 5 FS .Fact ory Se rvic e mode(Da ta con t rol during prod u ction) 8 AV-ID 13 VDDA2.5 .AV identi fication sig nal in put from pi n8 of SC ART 14 VSS .Groun d 6 SW 1 7 SW 2 .TUNER System con trol sig na l No Symbol Function 11 VDD3[...]

34 18 AF T .AFT signal inp ut 19 Hs ync_T V 20 Vsync_TV .H-Sy nc & V-Sync for TXT positi on from VPC 3230 21 22 KOUT1 KOUT2 .Sign al Output to So ft Touch pa nel 24 IR 30 VDD3.3 .Rem o con signa l inpu t 31 AD-PD .Power contro l for AD9 884(IC2 01). Turn off w hen Vide o & RF mode. 23 VS_PC 26 HS_PC .Check the sig nal 100 msec interval for [...]

35 34 XOUT 35 XIN .Main crystal( 6MHz) con nection for MICOM op eratio n 36 VS S .Gro und 37 VDDA2.5 .Volta ge Supply(2.5V) 41 FB 46 S-DET .Fast Blanking signal for Tel etext 47 RGB S W .Control RGB switchi ng IC 38 R 39 G 40 B .Teletex t R,G,B signal output No Symbol Function 44 VDD3.3 .Voltage Su pply(3.3 V) 45 INV_BRT .Brightness c ontrol to Inv[...]

36 50 A-MUT E .Sound M ute co ntrol wh en Cha nnel u p/down, Mode c hange & P ower on/off. 51 MX- DA 52 MX- CS .Data commu nicati on termin al with M X IC(Data & C S) No Symbol Function[...]

37 VPC3230D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 B1/C B1IN G1/Y 1IN R1/CR1IN B2/C B2IN G2/Y 2IN R2/CR2IN ASGF NC VSUP CAP VSUPD GNDD GNDCAP SCL SDA RESQ TES[...]

38 Video Processing - VPC3230D Presentation for SVC Engineer 1. Featu res Video Decodi ng - 4 Co mp os ite i nputs, 1 S- VHS i nput - Compo site v ideo & sy nc output - integra ted high-q u ality A/D conv erters - Adaptiv e 2H comb fil ter Y/C sepa rator - 1H NTSC c omb filt er - Multi-stand ard color de coder(1 Cry stal) - Multi-stand ard sy n[...]

39 I2C BUS Process ing Matrix Contrast Saturation Brightness Tin t SYNC + Clock Generation An a lo g Front End AN ALO G Component Front-End 4 x ADC Ad a pt i v e Comb Filter Color Decoder NTSC, PAL, SECAL Saturation Tin t MI XER 2D Scaler PIP Panorama Mode Contrast Brightness Peaking Output Formatter ITU-R 656 ITU-R 601 Mem or y Control AGC, 2*ADC [...]

40 Video Processing - VPC3230D Presentation for SVC Engineer Pin No. Pin Nam e Ty pe Connection (if not used) Short Descr iption 1 B1/CB1IN IN VREF Blue1/Cb1 Analog Component Input 2 G1/Y 1IN IN VREF Green1/Y1 Analog Component Input 3 R1/CR1IN IN VREF Red1/Cr1 Analog Com ponent Input 4 B2/CB2IN IN VREF Blue2/Cb2 Analog Component Input 5 G2/Y 2IN IN[...]

41 Video Processing - VPC3230D Presentation for SVC Engineer Pin No. Pin Nam e Ty pe Connection (if not used) Short Descr iption 51 GND SY SUPPLYD X Ground, Sync Pad Circuitr y 52 V SUPSY SUPPLYD X Supply Voltage, Sync Pad Circuitr y 53 INTLC OUT LV Interlace O utput 54 AVO OUT LV Active Video Output 55 FSY/HC OUT LV Front Sync/ Horizontal Cla mp P[...]

42 MSP3410D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 NC I 2 C_CL I 2 C_DA I 2 S_CL I 2 S_WS I 2 S_DA_OUT I 2 S_DA_IN1 ADR_DA ADR_W S ADR_CL DVSUP DVSUP DVSUP DV[...]

43 Pin No. Pin Nam e Ty pe Connection (if not used) Shor t Description 1 NC LV Not connected 2 I2C_CL IN/OUT OBL I2Cclock 3 I2C_DA IN/OUT OBL I2C data 4 I2S_CL IN/OUT LV I2S clock 5 I2S_WS IN/O UT LV I2S word strobe 6 I2S_DA_OUT OUT LV I2S data outp ut 7 I2S_DA_IN1 IN LV I2S1 data input 9 ADR_W S OUT LV ADR word strobe 10 ADR_CL SUPPLYD X Supply Vo[...]

44 Pin No. Pin Nam e Ty pe Connection (if not used) Short Descr iption 51 GND SY SUPPLYD X Ground, Sync Pad Circuitr y 52 V SUPSY SUPPLYD X Supply Voltage, Sync Pad Circuitr y 53 INTLC OUT LV Interlace O utput 54 AVO OUT LV Active Video Output 55 FSY/HC OUT LV Front Sync/ Horizontal Cla mp Pulse 56 MSY/HS IN/OUT LV Main S ync/Horizontal Sync Pulse [...]

45 LCD Monitor Controller - MX88L284 Presentation for SVC Engineer Feat ures • Converts NTSC/P AL and PC v ideo signal into flat panel di spl ay device timing and resoluti on • Provide full fram e bu ffer, reduce fr ame bu ffer an d frame bu ffer less optional ar chi tectur e. • Built-in m emory an d output clock gene rator • Support Au to-[...]