LG 27LZ5RV-ZC Service Manual
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LG 27LZ5RV-ZC Service Manual

LG 27LZ5RV-ZC Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : ML-041D
MODEL : 27LZ5RV-ZC
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
DVD / CD PLAYER
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG 27LZ5RV-ZC

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : ML-041D MODEL : 27LZ5RV-ZC CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. DVD / CD PLAYER...

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SERVICING PRECAUTIONS..............4 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION..............11 TROUBLE SHOOTING ................15 BLOCK DIAGRAM...................21 WIRING DIAGRAM ..................24 EXPLODED VIEW .................. 25 EXPLODED VIEW PARTS LIST ..............26 REPLACEMENT PARTS LIST ............... 27 SVC. SHEET ....................- 2 -...

  • Page 3: Product Safety

    SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the 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 Shock, Fire, or other Hazards.

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service unit under test. manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or...
  • Page 5 IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit should be used to remove and replace the IC.

  • Page 6: Specification

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range This specification is applied to ML-041D chassis. 2. Requirement for Test Testing for standard of each part must be followed in below condition. (1) Temperature: 25°C ±...
  • Page 7 4.General Specification Item Specification Unit Remark Panel 27" TFT WXGA LCD Frequency range H : 31 ~ 61Khz DVI-I input V : 56 ~ 75Hz Control Function 1) Contrast/Brightness 2) H-Position / V-Position 3) Tracking : Clock / Phase 4) Auto Configure 5) Reset Comoponent Jack 1 : Y...
  • Page 8 5.Optical Feature(LCD Module) Item Specification Remark Viewing Angle R/L, U/D 176,176 <CR 10> Luminance Luminance (cd/m2) Typical Variation MAX / MIN Contrast Ratio 1000 All white / All black CIE Color Coordinates White Typ. 0.284 Typ. 0.295 Typ. Typ. Green Typ.
  • Page 9 7. Component Video Input (Y, PB, PR) Specification Proposed Resolution H-freq(kHz) V-freq(Hz) 640x480 15.73 SDTV, DVD 480i 640x480 15.63 59.94 SDTV, DVD 480i 720x576 15.625 50.00 SDTV, DVD 625 Line 8. PC INPUT Mode table [Timming chart of Receivable Mode] Resolution H-freq(kHz) V-freq.(Hz)
  • Page 10 9. Customer Menu Setup [shipped condition: PAL] Item Condition Remark Power Volume Level Main Picture Input Main Last Channel Pr 01 Mute 16 : 9 Station Auto Program Manual Program Program Edit Favorite Program None Picture Dynamic Dynamic Contrast Brightness Colour Sharpness Tint...

  • Page 11: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object 3.4 Video signal Gain/Offset Adjustment(Auto adjustment) - Execution of White Pattern during Heat Run over 30min This instruction is for the application to the LCD TV. - Connect to the LCD TV AV1 Scart input terminal with Patten Generator(MSPG-925FS) - Convert INPUT MODE to Video&Confirm whether PSM 2.
  • Page 12 3.6 EDID (The Extended Display Identification Data) - Connect D-Sub to DVI-I Cable to DVI-I Jack. - Confirm the pc display by inputting the Analog signal. - After displayed, input the Analog EDID data. - Connect DVI D Cable to DVI Jack. - Confirm the pc display by inputting the Digital signal.
  • Page 13 * Option(PAL) Item Condition Remark Option1 SideAV 0 : SideAV Off 1 : SideAV On SCART 0 : SCART Off 1 : SCART On 0 : PC Off 1 : PC On SideComp 0 :SideComp Off 1 :SideComp ON 16:9 0 : Wide OFF 1 : Wide On 200PR...

  • Page 14: Svc Remocon

    SVC REMOCON FUNTION REAMARK To turn the TV on or off POWER To turn the TV on automatically if the power is supplied to the TV. (Use the POWER ON POWER key to deactivate): It should be deactivated when delivered. To activate the mute function.

  • Page 15: Troubleshooting

    TROUBLESHOOTING No power :[A]Process (LED indicator off) No Power Check 24V or 12V (LED indicator off) Faill of Power B/D Pass Check Output of Change L3, L1300 Faill L3, L1300 Check Output of Change IC1300, IC4 or IC6 IC1300, IC4 or IC6 Faill Pass Change LED Assy...
  • Page 16 No Raster :[B]Process Check LED Status Repeat A PROCESS on display unit Faill Check L900,L901 Change L900,L901, L902,L903 L902,L903 Faill Pass Check the input/ Change IC901 Output of IC901 Faill Pass Check inverter Change inverter Connector or inverter connector or inverter Faill Pass Change panel link...
  • Page 17 No Raster on Component signal Repeat [A] Process Pass Check the signal of Change Q310,Q315,Q316 Q310,Q315,Q316 Faill :[C]Process Pass Re-soldering or Check the input/ Change the defect part Faill output of IC800 Check IC800 Pass Re-soldering or Check the input/ Change the defect part Faill output of IC600...
  • Page 18 No Raster on AV Signa No Raster on TV(RF) signal (Scart1.Scart2,S-Video) Check 5V,33V of TU1000, Repeat Check the output of Re-soldering of Change the [A] Process TU1000 Faill Faill defect part Pass Change Check the signal of Q317,Q318,Q308, Q317,Q318,Q308,Q313 Faill Q313 Pass :[C]Process...
  • Page 19 No Raster on DVD Signal Repeat [A] Process Pass Check the signal of Check P1200,P1202 or R1211,R1212,R1213 DVD Cable Faill Pass :[C]Process - 19 -...
  • Page 20 No Sound(RF,SIDE AV) No Sound(Scart1/2,DVD,PC) Check the Change source input input source Faill Pass Re-soldering or Check the input/output Change the defect part Faill of IC1 Check X11 Pass Re-soldering or Check the input/ Change the defect part output of IC401 Faill Check IC403,X601 Pass...

  • Page 21: Block Diagram

    BLOCK DIAGRAM(26LZ5RV-ZC) - 21 -...
  • Page 22 BLOCK DIAGRAM(26LZ5RV-TC) - 22 -...
  • Page 23 BLOCK DIAGRAM DESCRIPTION 1. Video Controller Unit & Display Data Conversion Unit The video controller unit receives the video signals inputted through the tuner, AV port, and converts them into an ITU656 signal through the microcomputer (VCTI) combined with the video decoder that integrates various functions in one chip.

  • Page 24: Wiring Diagram

    WIRING DIAGRAM 5P-6631T25023Y 4P-6631T25023X 12P-6631T25019K 14P-6631T20032A 6P-6631T20033B 10P-6631T20033F 14P-6631T20033E 20P-6631T11020A 5P-6631T20033C 30P-6631T20040A 3P-6631T20033D 30P-6631T20040B 3P-6631T20031G - 24 -...

  • Page 25: Exploded View

    - 25 -...

  • Page 26: Exploded View Parts List

    EXPLODED VIEW PARTS LIST PART NO. DESCRIPTION 3091TKE018F Cover Assembly, RZ-27LZ50 BRAND 3091TKE012A 407AF LGEWA C/SKD 6304FCI014A LCD,Panel-TFT, V270B1-L01 27INCH 1366X768 550CD COLOR 75% V270B1-L01 550NITS 8MS 3809TKE013V Cover Assembly, RZ-26LZ50 3808TKE005A 407AF LGEWA PHANTOM 3809TKE013B Cover Assembly, RZ-26LZ50 3808TKE005A 407AF LGEWA C/SKD 4951TKS228B Plate Assembly, BASE , DVDP STAND 2ND TOOL 3550TKK821A...

  • Page 27: Replacement Parts List

    REPLACEMENT PARTS LIST For Capacitor & Resistors, the CC, CX, CK, CN, CH : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit in the CQ : Polyestor RS : Metal Oxide Film P/No. means as follows; CE : Electrolytic RN : Metal Film CF : Fixed Film RH : CHIP, Metal Glazed(Chip)
  • Page 28 DATE: 2006. 3. 15. DATE: 2006. 3. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0CH6102K406 C2012S2L1H102JT 1nF 5% 50V C472 0CH3104K566 0805B104K500CT 100nF 10% 50 0CH3104K566 0805B104K500CT 100nF 10% 50 C473 0CH3104K566 0805B104K500CT 100nF 10% 50...
  • Page 29 DATE: 2006. 3. 15. DATE: 2006. 3. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0CH3104K566 0805B104K500CT 100nF 10% 50 C828 0CK474DH56A C2012X7R1E474KT 470nF 10% 2 0CH3104K566 0805B104K500CT 100nF 10% 50 0CH6102K406 C2012S2L1H102JT 1nF 5% 50V C606...
  • Page 30 DATE: 2006. 3. 15. DATE: 2006. 3. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C2002 0CK103CK51A 0603B103K500CT 10nF 10% 50V C484 0CK104CK56A 0603B104K500CT 100nF 10% 50 C202 0CC101CK41A C1608C0G1H101JT 100pF 5% 50 C485 0CK474CH94A...
  • Page 31 DATE: 2006. 3. 15. DATE: 2006. 3. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C901 0CK103CK51A 0603B103K500CT 10nF 10% 50V IC1300 0IPMG00063A MP1593DN-LF-Z 4.75TO28V 1.2 C902 0CK103CK51A 0603B103K500CT 10nF 10% 50V IC1301 0IPMG00063A MP1593DN-LF-Z 4.75TO28V 1.2...
  • Page 32 DATE: 2006. 3. 15. DATE: 2006. 3. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L503 6210TCE001G HH-1M3216-501JT 500OHM 3.2X Q300 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50 L505 6210TCE001G HH-1M3216-501JT 500OHM 3.2X Q302 0TR387500AA...
  • Page 33 DATE: 2006. 3. 15. DATE: 2006. 3. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R118 0RH1000D622 MCR10EZHJ101 100OHM 5% 1/8W R381 0RH1001D622 MCR10EZHJ102 1KOHM 5% 1/8W 0RH6801D622 MCR10EZHJ682 6.8KOHM 5% 1/8 R383 0RH1001D622 MCR10EZHJ102 1KOHM 5% 1/8W...
  • Page 34 DATE: 2006. 3. 15. DATE: 2006. 3. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R836 0RH0752D622 MCR10EZHJ750 75OHM 5% 1/8W R164 0RJ1500D677 MCR03EZPJ151 150OHM 5% 1/10 R837 0RH0752D622 MCR10EZHJ750 75OHM 5% 1/8W 0RJ2202D677 MCR03EZPJ223 22KOHM 5% 1/10...
  • Page 35 DATE: 2006. 3. 15. DATE: 2006. 3. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R415 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R609 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R416 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10...
  • Page 36 DATE: 2006. 3. 15. DATE: 2006. 3. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R850 0RJ2200D677 MCR03EZPJ221 220OHM 5% 1/10 X601 6202VDT002H SX-1 18.432MHZ 30PPM 18.432 R854 0RJ2200D677 MCR03EZPJ221 220OHM 5% 1/10 X900 6202VDT002B...
  • Page 37 DATE: 2006. 3. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION VIDEO BOARD C2006 0CN4710K519 RH UP050 B471K-B-B 470pF 10 C2007 0CN4710K519 RH UP050 B471K-B-B 470pF 10 R2001 0RD0752Q609 RDM94T1J75R0 75OHM 5% 1/4W R2002 0RD0752Q609 RDM94T1J75R0 75OHM 5% 1/4W R2003 0RD0752Q609 RDM94T1J75R0 75OHM 5% 1/4W...
  • Page 40 Mar. 2006 P/NO : 38289S0004M Printed in Korea...

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