LG 32LB2R Service Manual
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LG 32LB2R Service Manual

Chassis lp62e
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LCD TV

SERVICE MANUAL

CHASSIS : LP62E
FACTORY MODEL : 32LB2R-ZH
MODEL : 32LB2R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com

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Summary of Contents for LG 32LB2R

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : LP62E FACTORY MODEL : 32LB2R-ZH MODEL : 32LB2R 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..............11 SERVICE REMOTE CONTROL...............16 TROUBLE SHOOTING ................17 BLOCK DIAGRAM...................23 EXPLODED VIEW..................24 EXPLODED VIEW PARTS LIST ..............25 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

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 3. Test method This specification is applied to LP62E chassis. 3.1 Performance : LGE TV test method followed 2. Requirement for Test 3.2 Demanded other specification Safety : CE, IEC Specification Testing for standard of each part must be followed in below EMC : CE, IEC...
  • Page 7 5. General Specification Item Specification Remark Panel 37", 42" TFT WXGA LCD Frequency range H : 31 ~ 61Khz, V : 56 ~ 75Hz PC Input Control Function 1) Contrast/Brightness 2) H-Position / V-Position 3) Tracking : Clock / Phase 4) Auto Configure 5) Reset Component Jack...
  • Page 8 7. Model Specification Item Specification Remark Market Broadcasting system PAL BG/I/DK, SECAM Available Channel BAND VHF/UHF C1 ~ C69 CATV S1 ~ S47 Receiving system Upper Heterodyne SCART Jack(2EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC, PAL60 Video Input (2EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC, PAL60...
  • Page 9 9. RGB Input ( PC ) Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Remarks 720 x 400 31.469 70.08 28.32 640 x 480 31.469 59.94 25.17 VESA(VGA) 640 x 480 37.500 75.00 31.50 VESA(VGA) 800 x 600 37.879 60.31 40.00 VESA(SVGA) 800 x 600 46.875 75.00 49.50...
  • Page 10 Attached ( detachable ) Size( W x D x H ) 155.2 Tilt Degree Without Tilt function Tilt force Swivel Degree + 30˚(±1) / -30˚(±1) Swivel Force 1.3kgf ( +/-0.2kgf) Appearance General Refer to Standard of LG(55)G1-1020 - 10 -...

  • Page 11: Adjustment Instruction

    4. EDID Δ Caution This spec. sheet is applied to all of the LP62E chassis(H3- High) manufactured at LG TV Plant all over the world. * Use the proper signal cable for EDID Download - Analog EDID : Pin3 exists 2.
  • Page 12 Remote controller for adjustment 802F Pattern Generator, Master (MSPG-925FA), etc. 32LB2R-ZH 00 00 00 FC 00 33 32 4C 42 32 52 2D 5A 48 0A 20 20 20 MSPG-925FA Pattern Generator 37LB2R-ZH 00 00 00 FC 00 33 37 4C 42 32 52 2D 5A 48 0A 20 20 20 (Which has 720p YPbPr signal : 100% Color Bar Pattern shown in Fig.

  • Page 13: White Balance

    2) Execute the SET Heat Run for 30minutes. 3) As below Fig.3, Supply 216Level (85 IRE) full screen pattern to Video input. 32LB2R-ZH, 37LB2R-ZH, 42LB2R-ZH: AV3/AV4 (Input 50Hz) 4) Press the FRONT-AV KEY on R/C for converting input mode. 5) Set the PSM to Standard mode in Picture menu.
  • Page 14 * Input Select Data Adjustment SET ID VAL Remark RF(10), AV1~4(20,21,22,23), SAV(30), COMP(40), DVI(50or60), HDMI(90) White Balanc“J”(A~F) * Command Set (SET ID : 0-> ALL , 1~99 -> each SET) RED GAIN 0~99 0~3F 0:0, 3F:3F, FF : the state marking GREEN GAIN Adjustment SET ID VAL...
  • Page 15 8. Shipping Conditions Item Condition Remark Power Volume Level Main Picture Input Main Last Channel Pr 01 Mute 16 : 9 Station Auto Programme Manual Programme Programme Edit Favorite Programme None Picture Dynamic Dynamic Contrast Brightness Colour Sharpness Normal Auto Advanced Reset Sound...

  • Page 16: Service Remote Control

    SERVICE REMOTE CONTROL 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. No power (1) Symptom 1) It is not discharged minutely from the module. 2) Light does not come in into the front LED. (2) Check following Start check Is a plug in power Plug in apower cord cord inserted? Connect a cable.
  • Page 18 2. Protection mode (1) Symptom 1) Minute discharge doesn’t occur at module. 2) Front LED doesn’t come into action (2) Check following Start check Is output the normality Low/High Is the PSU normal? Replace the power board. Voltage except Stand-by 5V? Is the each Agter connecting well each connector, Replace the power board.
  • Page 19 3. No Raster (1) Symptom 1) No OSD and image occur at screen. 2) It maintains the condition where the front LED is normal. (2) Check following Start check Does minute discharge Is the output voltage normality Low/High Is the inverter/VaVs at Module? Voltage except Stan-by 5V? Replace the Power board.
  • Page 20 4. In case of becomes unusual display from RF mode(Main) Start check Is video output Is normal the Is the Input Is the Tunner of the tuner(Check T201_ 12C communication?(Check voltage(check pin5, Cable connected Pin14) normal? Pin5, Pin4) Pin4) well? Insert the cable well.
  • Page 21 6. In the case of becomes unusual display from rear S-Video mode(main) Is video input of the A/V Check the input source. jack normal?(Check R198, R199, R2100) Same as Block A. 7. In the case of becomes unusual dispaly from rear AV mode(main) Is video input Check the input source.
  • Page 22 10. In the case of becomes unusual display from SCART 1_RGB mode(main) Is video input of the A/V jack Check the input source. normal?(Check L111, L112, L106) Same as Block A. 11. In the case of becomes unusual display from SCART 2 mode(main) Is video input Check the input source.

  • Page 23: Block Diagram

    13. In case of becomes unusual display from RF mode(Sub) Is normal the Is video output Is the Input Is the Tunner 12C communication?(Check of the tuner normal? (Check voltage(check pin8, Cable connected Pin5, Pin4) T200_Pin14) Pin6) well? Insert the cable well. check the power(L1103).

  • Page 24: Exploded View

    15. In the case of becomes unusual display from component 1 mode(main) Is video input of the JK102 Check the input source. normal? (CheckL126, L127, L128) Change IC(IC800). 16. In the case of becomes unusual display from component 2 mode(main/sub) Is video input of the JK103 Check the input source.

  • Page 25: Exploded View Parts List

    18. No sound (1) Symptom 1) LED is white 2) Screen is existent, but sound isn’t output. (2) Check following Set on speaker All input(mode) Is the speaker in menu. on in menu? is no sound. check the Is the speaker Speaker cable.

  • Page 26: Replacement Parts List

    19. HDMI mode Is only video Download EDID data each port. normal? 1. Check TV input mode. (HDMI1 port support HDMI and DVI. So if you input DVI signal and PC audio from phone jac, You ca hear PC audio.) Is only audio 2.
  • Page 27 BLOCK DIAGRAM FRC_DEN/CLK_Out FRC_DEN/CLK_Out FRC_HS/VS_Out FRC_HS/VS_Out FRC_R/G/B_Out_ FRC_R/G/B_Out_ OUT_TX_ A OUT_TX_ B OUT_TX_ C OUT_TX_ D OUT_TX_ E OUT_TX_ CLK Memory R_CH R_CH R_OUT R_SPK_OUT CN_IIS L_CH L_SPK_OUT L_CH L_OUT SCL/SDA_Part MC_IIS SCL/SDA_Part SCL/SDA_Part SCL/SDA_Part_5V /RIN - 27 -...
  • Page 28 - 28 -...
  • Page 32 Oct., 2006 P/NO : MFL36037301 Printed in Korea...

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