Gebruiksaanwijzing /service van het product 42LC2R van de fabrikant LG Electronics
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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.
- 2 - CONTENTS CONTENTS .............................................................................................. 2 SAFETY PRECAUTIONS ..........................................................................3 SPECIFICA TION ....................
- 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.
- 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.
- 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.
- 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.
- 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 Inp.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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 A.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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 I.
- 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 soun.
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 63.
- 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% .
- 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.
- 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 VMV226M016S0A.
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 470n.
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 1.
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.
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.
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.
DATE: 2006. 04. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1442 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R1447 0RJ4701D677 MCR03EZPJ472 4.
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.
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.
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% .
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 100p.
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Mar., 2006 Printed in Korea P/NO : MFL30105507.
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