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LG 32LC2D Service Manual
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LG 32LC2D Service Manual

LG 32LC2D Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : LB61A
FACTORY MODEL : 32LC2D-AA
MODEL : 32LC2D
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
e-mail:http://www.LGEservice.com/techsup.html
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website:http://biz.LGservice.com

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  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : LB61A FACTORY MODEL : 32LC2D-AA MODEL : 32LC2D CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 SAFETY PRECAUTIONS ................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............10 TROUBLE SHOOTING ................17 BLOCK DIAGRAM...................23 EXPLODED VIEW .................. 24 REPLACEMENT PARTS LIST ............... 26 SVC. SHEET ....................- 2 -...

  • Page 3: Safety Precautions

    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

    34.40MHz(Sound) 2) DVB-T : 36.125MHz Input Voltage AC 240 V, 50Hz Maker : LGE LCD Module 32" : LC320W01-SL11 (1366x768) Maker : LG Philips LCD Aspect ratio 16:9 (wide) Operating Temperature Operating Humidity Storage Temperature Storage Humidity - 6 -...
  • Page 7 5. Chroma & Brightness Item Unit Remark Brightness cd/m Contrast Ratio 500:1 600:1 Luminance Variation Viewing Angle(Left, Right, Up, Down) Degree Color coordinate 0.640 - 0.03 0.343 + 0.03 GREEN 0.280 0.605 BLUE 0.145 0.065 WHITE 0.285 (Standard) 0.293 Color Temperature Medium 8,300 9,300...
  • Page 8 7. Component Video Input (Y, PB, PR) Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Remarks 720*576 15.625 50.00 13.50 SDTV576i 720*576 31.25 50.00 27.00 SDTV576p 720*480 15.73/15.75 59.94/60.00 13.50 SDTV 480i 720*480 31.47/31.50 59.94/60.00 27.00 SDTV 480p 1280*720 44.96/45.00 59.94/60.00 74.25 HDTV 720P 1280*720 37.50 50.00...
  • Page 9 9. LCD MODULE 9-1. General specifications(module) Item Unit Remark Active Screen Size 800.4(diagonal) 31.51 inches Outline Dimension 760(H) x 450(V) x 48(D) Typ. Pixel Pitch 170.25 x 510.75 x RGB Pixel Format 1366(H)x768(V) RGB stripe arrangement Color Depth 8bit 16.7 Mbit Luminance ,White cd/m...

  • Page 10: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object 5. MST3362M-Set Adjustment These instructions are applied to all of the 32" LCD TV, 5-1. Synopsis LB61A Chassis MST3362M-Set adjustment to set the black level and the Gain of optimum with an automatic movement from the analog => 2.

  • Page 11: Adjustment Method

    6. Video(uPD)-Set Each PCB Assy must be checked by Check JIG Set before assembly. (Especially, be careful Power PCB Assy which can 6-1. Synopsis cause Damage to the PDP Module.) This is a adjustment to reduce the color difference of video signal Main/Sub Display.

  • Page 12: Edid Data

    8-3. EDID DATA 8. EDID(The Extended Display (1) HDMI EDID DATA. Identification Data)/DDC 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F (Display Data Channel) Download 00 00 FF FF FF FF FF FF 00 1E 6D 01 01 01 01 01 01 10 0A 10 01 03 80 6E 3E 78 0A 31 30 A5 58 3B B8 26 This is the function that enables “Plug and Play".
  • Page 13 8-4. Act or set the EDID S/W 9. Adjustment of White Balance 1) As above Fig. 6, Connect the Set, EDID Download Jig, PC 9-1. Required Equipment & Cable. 2) Turn on the PC & EDID Download Jig. And Execute the (1) Color analyzer (CA-210 or similar product) S/W : EDID TESTER Ver,2.5.
  • Page 14 9-4. Adjustment of White Balance (Automatic Adjustment) Calibrate of the CA-210, then attach sensor to PDP module surface when you adjust. Manual adjustment is also possible by the following sequence. (1) HEAT RUN at least 30 minutes by pressing the Power only Key on the Service Remote Control and adjust.
  • Page 15 10. Shipping Conditions Item Value Remark Power CH Memory Analog C0,C5,C6,S11,S28,C27,C44,C60 Digital Pictur Dynamic Contrast Brightness Color Sharpness Tint (Not available) Color temperature COOL Auto , Manual Audio Standard Balance Treble Bass Front surround TV speaker Time Auto clock Manual Clock Enable Off timer On timer Sleep timer...

  • Page 16: 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 17: Troubleshooting

    TROUBLESHOOTING 1. Power Board 1-1. The whole flowchart which it follows in voltage output state Start check Doesn't the Is it identical Is the Interface screen whole come with Power Off signal operated? out? condition? 1. Check the Power Off 2.
  • Page 18 1-2. 42” Power Board Structure T801: Vs Trans T901: Va Trans T112: Low Voltage Trans T501: ST-BY Trans T601: PFC Inductor - 18 -...
  • Page 19 2. In case of occurring strange screen into specific mode 2-1. In case the OSD does not displayed (1) Symptom 1) LED is white. 2) Some discharge on Panel becomes accomplished continuously. (2) Check follow Is the LVDS cable Is the LVDS cable Replace the cable.
  • Page 20 2-2. In case of does’t display the screen into specific mode (1) Symptom 1) The screen does not become the display from specific input mode. (RF, AV, Component, RGB, DVI) (2) Check following 1) Check the all input mode should become normality display. 2) Check the Video(Main)/Data(Sub), Video(Main)/Video(Sub) should become normality display from the PIP mode or DW mode.(Re-Check using Swap function) Check the NEC64015(IC701) if the main picture is abnormal, and...
  • Page 21 (5) When Component or RGB-DTV/ PC mode is abnormal Is the CXA2151Q(IC500) Is normal the Input voltage, IIC Replace the IC. normal? Communication and HV sync? Is the MST3362(IC604) Is normal the Input voltage, IIC Replace the IC. normal? Communication and HV sync? Is normal the Input voltage, IIC Is the Scaler normal? Replace the IC.
  • Page 22 3. When sound is abnormal (1) Symptom 1) LED is green. 2) Screen display but sound is not output. (2) Check following Is the SPK cable Is the SPK cable Replace SPK cable. normal? connected well? Cable inserts well. Is the Flat cable Cable inserts well.

  • Page 23: Block Diagram

    BLOCK DIAGRAM - 23 -...
  • Page 24 - 24 -...

  • Page 25: Exploded View

    Speaker,Fullrange, C112K01K1450. FERRITE 15W 8OHM 83.5DB 170HZ 116 X 42 X 38.5 LUG ESTEC AMERICA CORPORATION 49509K0195A Plate, CASTING AL FRAME SUPPORT 32LC2 EBR30742201 PCB Assembly,Sub, SUB T.T LB61A 32LC2D-AA AAULLHX SIDE AV TOTAL_DMS apply EBR31378301 PCB Assembly,Sub, SUB T.T LB61A 32LC2D-AA AAULLHX KEY FRONT TOTAL EBR31311501 PCB Assembly,Sub, SUB T.T LB61A 32LC2D-AA AAULLHX IR FOR DMS...

  • Page 26: 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 27 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C787 0CE476WF6DC MVK6.3TP16VC47M 47uF 20% 16 C1216 0CK104CK56A 0603B104K500CT 100nF 10% 50 C789 0CE476WF6DC MVK6.3TP16VC47M 47uF 20% 16 C1217 0CK104CK56A 0603B104K500CT 100nF 10% 50...
  • Page 28 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C208 0CK104CK56A 0603B104K500CT 100nF 10% 50 C432 0CK104CK56A 0603B104K500CT 100nF 10% 50 C209 0CK104CK56A 0603B104K500CT 100nF 10% 50 C433 0CK104CK56A...
  • Page 29 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C524 0CK104CK56A 0603B104K500CT 100nF 10% 50 C729 0CK104CK56A 0603B104K500CT 100nF 10% 50 C527 0CK104CK56A 0603B104K500CT 100nF 10% 50 C732 0CK104CK56A...
  • Page 30 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C822 0CK104CK56A 0603B104K500CT 100nF 10% 50 C913 0CK102CK56A 0603B102K500CT 1nF 10% 50V C823 0CK104CK56A 0603B104K500CT 100nF 10% 50 C914 0CK102CK56A...
  • Page 31 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C518 0CK104CK56A 0603B104K500CT 100nF 10% 50 D602 0DRSE00048A RLCAMP0504M 1.2V 6V 25V 12A C522 0CK104CK56A 0603B104K500CT 100nF 10% 50 ZD300...
  • Page 32 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION COIL & CORE & INDUCTOR AL601 6210TCE002B HB-4M3216-121JT 120OHM 3.2X L1301 6140VB0004B LN-15A1 26uH - - 12X9MM LEA AL602 6210TCE002B HB-4M3216-121JT 120OHM 3.2X...
  • Page 33 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q700 0TR150400BA 2SA1504S(ASY) PNP -5V -50V R1030 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W Q701 0TR150400BA 2SA1504S(ASY) PNP -5V -50V 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W...
  • Page 34 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R403 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R150 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R404 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W...
  • Page 35 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R750 0RJ5101D677 MCR03EZPJ512 5.1KOHM 5% 1/1 R1026 0RJ1201D677 MCR03EZPJ122 1.2KOHM 5% 1/1 R751 0RJ2201D677 MCR03EZPJ222 2.2KOHM 5% 1/1 R1027 0RJ0000D677...
  • Page 36 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R127 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R1539 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R128 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R1540 0RJ0222D677...
  • Page 37 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R3049 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R406 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R3052 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R409 0RJ1002D677...
  • Page 38 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R6042 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R786 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R6046 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W R787 0RJ1000D677...
  • Page 39 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R956 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W C321 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% R957 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W C329 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% R959...
  • Page 40 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C409 0CK104CK56A 0603B104K500CT 100nF 10% 50 C330 0CK104CK56A 0603B104K500CT 100nF 10% 50 C410 0CK104CK56A 0603B104K500CT 100nF 10% 50 C331 0CK103CK56A...
  • Page 41 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION RESISTORs IC100 0ISO206900A CXA2069Q 8.5TO9.5V - - 1300 R1061 0RJ0752D677 MCR03EZPJ750 75OHM 5% 1/10W IC400 0ILNR00015A NSP-2100A 1.8VTO3.3V - - -...
  • Page 42 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R5107 0RJ0822D677 MCR03EZPJ820 82OHM 5% 1/10W R1070 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R1071 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W...
  • Page 43 DATE: 2006. 07. 02. DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R231 0RJ2200D677 MCR03EZPJ221 220OHM 5% 1/10 R5004 0RJ1502D677 MCR03EZPJ153 15KOHM 5% 1/10 R232 0RJ2200D677 MCR03EZPJ221 220OHM 5% 1/10 R5007 0RJ0822D677...
  • Page 44 DATE: 2006. 07. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION IR BOARD C200 0CH5101K416 C2012C0G1H101JT 100pF 5% 50 C201 0CH5330K416 C2012C0G1H330JT 33pF 5% 50V C202 0CE476VF6DC VGV476M016S0ANE010 47uF 20% C203 0CE476VF6DC VGV476M016S0ANE010 47uF 20% C204 0CE476VF6DC VGV476M016S0ANE010 47uF 20% L200 0LC1032101A FI-C3216-103KJT 10UH 10% -...
  • Page 51 Jun., 2006 P/NO : MFL30105537 Printed in Korea...

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