LG Electronics 42LC2R manuale d’uso

R LCD TV SER VICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS : LP62C F ACTOR Y MODEL : 37LC2R-TH / 42LC2R-TH MODEL : 37LC2R / 42LC2R website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html[...]

- 2 - CONTENTS CONTENTS .............................................................................................. 2 SAFETY PRECAUTIONS ..........................................................................3 SPECIFICA TION ........................................................................................6 ADJUSTMENT INSTRUCTION ......[...]

- 3 - SAFETY PRECAUTIONS Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by i n t h e Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIAT[...]

- 4 - CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow t[...]

- 5 - IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard techni[...]

- 6 - 1. Application range This specification is applied to LP62C chassis. 2. Requirement for Test Testing for standard of each part must be followed in below condition. (1) Temperature : 25°C± 5°C(77±9°F), CST : 40± 5 (2) Humidity : 65%± 10% (3) Power : Standard input voltage (AC 100-240V, 50/60Hz) *Standard Voltage of each products is mark[...]

- 7 - 5. General Specification 6. Set Optical Feature 6.1. 37LC2R-TH/42LC2R-TH No Item Specification Remark 1 Panel 37", 42" TFT WXGA LCD 2 Frequency range H : 31 ~ 61KhzV : 56 ~ 75Hz PC Input 3 Control Function 1) Contrast/Brightness 2) H-Position / V-Position 3) Tracking : Clock / Phase 4) Auto Configure 5) Reset 4 Component Jack Y/Pb/P[...]

- 8 - 6.2. 37LC2R-TH/37LC2R-ZH(Only AUO Module) No Parameter Symbol Value Unit Remark Min Typ Max 1. Contrast Ratio CR 32", 37" 800 1200 (*) Normal Mode 42" 700 1000 - 100IRE Full white window pattern - APC : Clear (Dynamic) 2. Surface Luminance, LWH 360 450 Cd/m 2 (*) Normal Mode white - 100IRE Full white window pattern - APC : Clea[...]

- 9 - 8. Component Video Input (Y, PB, PR) No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Remarks 1. 720 x 480 15.73 59.94 13.500 SDTV, DVD 480I(525I) 2. 720 x 480 15.75 60.00 13.514 SDTV, DVD 480I(525I) 3. 720 x 576 15.625 50.00 13.500 SDTV, DVD 576I(625I) 4. 720 x 480 31.47 59.94 27.000 SDTV 480P 5. 720 x 480 31.50 60.00 27.027 SDTV 480P[...]

- 10 - 11. HDMI Input ( PC ) No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Remarks 1 720 x 400 31.469 70.08 28.32 DOS 2 640 x 480 31.469 59.94 25.17 VESA(VGA) 3 640 x 480 37.500 75.00 31.50 VESA(VGA) 4 800 x 600 37.879 60.31 40.00 VESA(SVGA) 5 800 x 600 46.875 75.00 49.50 VESA(SVGA) 6. 832 x 624 49.725 74.55 57.28 Macintosh 7 1024 x 768 4[...]

- 11 - ADJUSTMENT INSTRUCTION 1. Application Range This spec. sheet is applied to all of the LP62A/B/C chassis(H3-High) manufactured at LG TV Plant all over the world. 2. Specification 2.1 Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help to protect test instr[...]

- 12 - d. Model Name/Monitor Name: e. Checksum: Changeable by total EDID data 5. ADC Calibration 5.1 Adjustment of RF/AV/S-VIDEO * Required Equipments • Remote controller for adjustment • 802F Pattern Generator, Master (MSPG-925FA), etc. • MSPG-925FA Pattern Generator ( Which has Video Signal: 100% Color Bar Pattern shown in Fig. 1) => Mod[...]

- 13 - => Caution : Before White-balance, the AV ADC should be done. (ZH:AV3, TH:AV1, MH:VIDEO1) => After Aging, When the procedure is changed White balance adjustment, it will be canceled Heat_run mode auto. (Notice : Before White-balance, change input mode Move to AV3(ZH) or AV1(TH) or VIDEO1(MH) by using the FRONT-AV KEY on Remote controll[...]

- 14 - 7. Shipping Conditions No Item Condition Remark 1 Power Off 2 Volume Level 30 3 Main Picture Input TV 4 Main Last Channel Pr 01 5 Mute Off 6 ARC 16 : 9 7 Station Auto Programme Manual Programme Programme Edit Favorite Programme None 8 Picture PSM Dynamic Dynamic Contrast 100 Brightness 50 Colour 50 Sharpness 50 CSM Normal XD Auto Advanced Re[...]

- 15 - SVC REMOCON NO KEY FUNTION REAMARK 1 POWER 2 POWER ON 3 MUTE 4 P-CHECK 5 S-CHECK 6 ARC 7 CAPTION 8 TXT 9 TV/AV 10 TURBO SOUND 11 TURBO PICTURE 12 IN-START 13 ADJ 14 MPX 15 EXIT 16 APC(PSM) 17 ASC(SSM) 18 MULTIMIDIA 19 FRONT-AV 20 CH 21 VOL 22 ENTER 23 PIP CH-(OP1) 24 PIP CH+(OP2) 25 PIP SWAP(OP3) 26 PIP INPUT(OP4) 27 EYE 28 MENU 29 IN-STOP 3[...]

- 16 - TROUBLESHOOTING 1. No power Start check Manufacture enterprise meaning of a passage 1. Check the Power off condition No No No Yes 2. Check the Interface signal condition No 3. Check the St_by 5V signal circuit Yes Yes Yes 4. Check the 5V Monitor signal circuit 5. Check the VSC RL_ON signal Yes 6. Check the VSC low pressure output Yes No 7. C[...]

- 17 - 2. VSC Board 2-1. No Power (1) Symptom 1) Minute discharge doesn’t occur at module. 2) Front LED doesn’t come into action (2). Check follow Is the Power Cord plug in ? Plug in Power Cord No No No No Yes Is the Line Filter and PSU connected? Connect Cable (SC101) Yes Is the Fuse(F101) of PSU is normal? Replace Fuse Yes Is it connect that [...]

- 18 - 2-2. No Raster - LCD (1) Symptom 1) Does’t minute discharge at module. 2) It maintains the condition where the front LED is normal. (2) Check follow Is the Inverter On or Off Check the Power board. Off No Is the inverter 24V on power board normal No No No No Is output the normality Low/High voltage except stand-by 5V? No 'Inverter_On&[...]

- 19 - Is the LVDS cable normal? Is the VSC Board normal? IC800' operation is normal? Is the Ctrl Board of Module normal? Is the LVDS cable connected well? Replace cable. Replace VSC B/D No No Yes Replace Ctrl Board in Plasma panel No Replace LCD Module No Yes Yes Is the LCD Module normal? Yes Plasma LCD TV No Cable inserts well. No Replace FI[...]

- 20 - 2-3-2. In the case of doesn't work normally at specific input mode (1) Symptom 1) The screen doesn't work normally at specific input mode (RF, AV, Component, RGB, HDMI) (2) Check follow 1) Check the all input model if all input display normally. 2) Check the PIP and Double Window if it display normally.(Re-Check it Swap) (3) In cas[...]

- 21 - (4) When set doesn’t display normally at RF , AV mode (5) When set doesn't display nromally at Component, RGB mode (6) In the case of becomes unusual display from HDMI mode Yes Replace IC1200 No Is the Input voltage, IIC Communication and HV sync normal? No Is the IC1200 normal? Replace IC800 No Is the Input voltage, IIC Communication[...]

- 22 - 2-4. In case of no sound (1) Symptom 1) LED is White 2) Screen existent, but Sound isn’t (2) Check follow No No No All input(mode) is no sound? Only HDMI is no sound? Only AV input is no sound? Replace IC400 Replace IC401 Replace IC300 Replace VSC B/D Set on speaker in menu Download the EDID data Check the speaker cable No Only RF is no so[...]

BLOCK DIAGRAM - 23 -[...]

- 24 - EXPLODED VIEW (37LC2R) 010 020 070 111 110 120 130 140 150 160 100 090 080 060 050 040 030[...]

- 25 - EXPLODED VIEW P ARTS LIST(37LC2R) No. PART NO. DESCRIPTION 30919E0046J Cover Assembly, 37LC2R-ZH BRAND 30909E0027 FOR EU (C/SKD) 30919E0046H Cover Assembly, 37LC2R-ZH BRAND 30909E0027 FOR EU 6304FAU023A LCD,Panel-TFT, T370XW01-V1 37INCH 1366X768 500CD COLOR 72% T370XW01-V1 500NITS 8MS 20LAMPS 3809900164F Cover Assembly, 37LC2R-ZH NON H3-H (C[...]

- 26 - EXPLODED VIEW(42LC2R)[...]

- 27 - EXPLODED VIEW P ARTS LIST(42LC2R) No. PART NO. DESCRIPTION 30919E0047H Cover Assembly, 42LC2R BRAND 30909E0028 ZH C/SKD 6304FLP363A LCD,Panel-TFT, LC420W02-SLA1 42INCH 1365X768 500CD COLOR 72% - or 6304FLP353A LCD,Panel-TFT, LC420W02-B6K2 42INCH 1365X768 500CD COLOR 72% - 3809900165L Cover Assembly, 42LC2R HURRICANE 42" SPRAY 3043900034[...]

- 28 - DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1001 0CE477WF6DC MVK10TP16VC470M 470uF 20% 1 C1005 0CE477WF6DC MVK10TP16VC470M 470uF 20% 1 C1007 0CE476WF6DC MVK6.3TP16VC47M 47uF 20% 16 C1009 0CE477WF6DC MVK10TP16VC470M 470uF 20% 1 C1012 0CE476WF6DC MVK6.3TP16VC47M 47uF 20% 16 C1014 0CE477WF6DC MVK10TP16VC470M 470uF [...]

- 29 - DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C898 0CE106WFKDC MVK4.0TP16VC10M 10uF 20% 16 C901 0CE226SF6DC VMV226M016S0ANB010 22uF 20% C904 0CE226SF6DC VMV226M016S0ANB010 22uF 20% C905 0CE226SF6DC VMV226M016S0ANB010 22uF 20% C930 0CE226SF6DC VMV226M016S0ANB010 22uF 20% C943 0CE226SF6DC VMV226M016S0ANB010 22uF 20% [...]

DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C874 0CK103CK56A 0603B103K500CT 10nF 10% 50V C881 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1000 0CK474CH94A 0603F474Z250CT 470nF -20TO+ C1002 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1004 0CK103CK56A 0603B103K500CT 10nF 10% 50V C1006 0CK104CK56A 0603B104K500CT 100nF 10% 50 C10[...]

DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1461 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1466 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1467 0CC101CK41A C1608C0G1H101JT 100pF 5% 50 C1469 0CK104CK56A 0603B104K500CT 100nF 10% 50 C147 0CK102CK56A 0603B102K500CT 1nF 10% 50V C1470 0CC102CK41A C1608C0G1H102JT 1nF 5% 50V C147[...]

DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C910 0CK104CK56A 0603B104K500CT 100nF 10% 50 C911 0CK103CK56A 0603B103K500CT 10nF 10% 50V C912 0CK104CK56A 0603B104K500CT 100nF 10% 50 C913 0CK103CK56A 0603B103K500CT 10nF 10% 50V C914 0CK104CK56A 0603B104K500CT 100nF 10% 50 C915 0CK103CK56A 0603B103K500CT 10nF 10% 50V C916 0C[...]

DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L1404 6140VB0032A DBF-1015A 15.5uH - - 10.8X1 L1405 6140VB0032A DBF-1015A 15.5uH - - 10.8X1 L1406 6140VB0032A DBF-1015A 15.5uH - - 10.8X1 L1407 6140VB0032A DBF-1015A 15.5uH - - 10.8X1 AR1200 6210TCE002B HB-4M3216-121JT 120OHM 3.2X AR1201 6210TCE002B HB-4M3216-121JT 120OHM 3.2X[...]

DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L207 0LC6461201A D75C-646CY-121M=P3 120UH 20 L120 0LCML00020G MLI-201209-3R3K 3.3UH 10% - L121 0LCML00020G MLI-201209-3R3K 3.3UH 10% - L122 0LCML00020G MLI-201209-3R3K 3.3UH 10% - L123 0LCML00020G MLI-201209-3R3K 3.3UH 10% - L206 0LCML00020G MLI-201209-3R3K 3.3UH 10% - L311 0L[...]

DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1442 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R1447 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 R1450 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R1451 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R1452 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R1458 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R1[...]

DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R609 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R619 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 R621 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R800 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R810 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R814 0RJ2701D677 MCR03EZPJ272 2.7KOHM 5% 1/1 R818 0RJ2[...]

DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R184 0RJ0752D677 MCR03EZPJ750 75OHM 5% 1/10W R1842 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W R1843 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W R1844 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W R1845 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W R1846 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W R1[...]

DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R512 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R513 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R514 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R515 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R519 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R522 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R523 0RJ1[...]

DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R107 0RH1501D622 MCR10EZHJ152 1.5KOHM 5% 1/8 R108 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 C200 0CH5101K416 C2012C0G1H101JT 100pF 5% 50 C201 0CH5330K416 C2012C0G1H330JT 33pF 5% 50V C202 0CE476VF6DC VGV476M016S0ANE010 47uF 20% C203 0CE476VF6DC VGV476M016S0ANE010 47uF 20% C204 0C[...]

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Mar., 2006 Printed in Korea P/NO : MFL30105507[...]