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LG 44/52SZ8R Service Manual
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LG 44/52SZ8R Service Manual

Dlp projection tv
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DLP Projection TV

SERVICE MANUAL

CHASSIS : MB-05DB
MODEL : 44/52SZ8R
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
TV/AV
OK
VOL
PR
MENU
44/52SZ8R-TB
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG 44/52SZ8R

  • Page 1: Service Manual

    DLP Projection TV SERVICE MANUAL CHASSIS : MB-05DB MODEL : 44/52SZ8R MODEL : 44/52SZ8R-TB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. TV/AV MENU...

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ........................2 SAFETY PRECAUTIONS ....................3 SERVICING PRECAUTIONS ..................4 CONTROL DESCRIPTIONS ....................6 SPECIFICATIONS ......................10 ADJUSTMENT INSTRUCTIONS ..................18 BLOCK DIAGRAM......................23 EXPLODED VIEW ....................30,32 EXPLODED VIEW PARTS LIST ................31,33 REPLACEMENT PARTS LIST ..................34 REPLACEMENT THE LAMP ..................43 SVC. SHEET ........................PRINTED CIRCUIT BOARD ....................

  • Page 3: Safety Precautions

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

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service transistors and semiconductor "chip" components. The manual and its supplements and addenda, read and follow the following techniques should be used to help reduce the SAFETY PRECAUTIONS on page 3 of this publication. incidence of component damage caused by static by static NOTE: If unforeseen circumstances create conflict between the electricity.
  • Page 5 c. Quickly move the soldering iron tip to the junction of the Fuse and Conventional Resistor component lead and the printed circuit foil, and hold it Removal/Replacement there only until the solder flows onto and around both the 1. Clip each fuse or resistor lead at top of the circuit board component lead and the foil.

  • Page 6: Control Descriptions

    CONTROL DESCRIPTIONS All the functions can be controlled with the remote control handset. Some functions can also be adjusted with the buttons on the front panel of the set. Remote control handset POWER Before you use the remote control handset, please install the bat- teries.

  • Page 7: Battery Installation

    13. TV/AV selects the remote operating mode. switches the set on from standby. POWER 14. ARC (Aspect Ratio Control) changes the picture format. MULTIMEDIA TV/AV 15. CANCEL/EXIT LIST Clears all on-screen displays and returns to TV viewing from any MUTE menu.

  • Page 8: Front Panel

    Front panel Lamp indicator, operation indicator, and temperature indicator, located side the front panel controls reveal the operating status of the DLP(Digital Light Processing) projection TV. ON/OFF TV/AV MENU TV/AV MENU 1. REMOTE CONTROL SENSOR 7. OPERATION INDICATOR (Refer to p.7) 2.

  • Page 9: Rear Panel

    Rear panel AV3 INPUT AUDIO SOCKET (L)/ MONO VIDEO S-VIDEO S-VIDEO COMPONENT INPUT 1 INPUT 2 480i/480p/ 480i/480p/ 576i/576p/ 576i/576p/ AUDIO INPUT 720p/1080i 720p/1080i (L)/ MONO MONITOR A/V 2 A/V 1 VIDEO INPUT INPUT PC/DTV (SXGA/ 480p/ S-VIDEO S-VIDEO 576p/ 720p/ 1080i) VIDEO...

  • Page 10: Specifications

    Market Place Brand Remark MB-05DB RT-44/52SZ84DB/ P Australia/ Non-EU (44/52SZ8R) Specification Each part is tested as below without special appointment. 1) Temperature : 25 5°C (CST : 40°C 2°C) 2) Relative Humidity : 65 10% 3) Power Voltage : Standard input voltage(AC 240V , 50Hz) * Standard Voltage of each products is marked by model.
  • Page 11 General Specification Specification Item Remark Aspect Ratio 16:9(wide) Operating Environment 1) Temp : 0~40 deg 2) Humidity : 0~85% LGE SPEC Storage Environment 3) Temp : -20~60 deg 4) Humidity : 0~85% Input Voltage AC 140~ 240V, 50/60Hz Model Specification Specification Item Remark...
  • Page 12 Item Specification Remark RF Input 2 Tuner (PAL-BG/ I/ DK, SECAM-BG/ Rear 44/52SZ84DB DK, NTSC-M) (44/52SZ8R) AV Input CVBS/ L/ R / S-VHS(S-VHS Priority) Rear 2 Side 1 Monitor Out CVBS/L / R Rear Component Input 480i/ 576i/ 480p/ 576p/ 720p/ 1080i...
  • Page 13 Item Remark Specification Available for only RGB PC Menu Manual config Phase : 0 ~ 63 (Screen) Clock : -127 ~ +128 RF, AV1/2, Component 480i,576i On/ Off Cinema (Film Mode) 3D NR : 0~ 16 Except RGB-PC / HDMI-PC MPEG NR : 0~63 (Luma Noise Reduction) Initialize user data...
  • Page 14 Power Specification Item Remark Unit Power ON/OFF operation 10000 times Normal 220V Staring Voltage Normal 220V Staring Voltage, -10 Degree DC Voltage, Ballast DC Voltage, 5V-STBY DC Voltage, 3.3V-STBY 3.135 3.465 DC Voltage, 2.5V-STBY 2.375 2.625 DC Voltage, 1.8V-STBY 1.71 1.89 DC Voltage,Tuning Voltage DC Voltage, DLP Driver, 3.5V...
  • Page 15 Component Video Input (Y, P Specification Proposed Resolution H-freq(kHz) V-freq(Hz) Pixel clock SDTV, DVD 480I(525I) 720*480 15.73 59.94 13.500 SDTV, DVD 480I(525I) 720*480 15.75 60.00 13.514 SDTV, DVD 576I(625I) 720x576 15.625 50.00 13.500 SDTV 480P 720*480 31.47 59.94 27.000 SDTV 480P 720*480 31.50 60.00...
  • Page 16 Option Specification Remark Item Description Area Code OPTION1 200PR 0 : 100 PR Memory (Tuner opt) 1 : 200PR Memory ACMS 0 : CH Memory On 1 : CH Memory Off TEXT TOP : A patent right payment nation FLOP : Basic Off : Text Off CH+AU 0 : Others...
  • Page 17 Item Specification Remark Description 7 : Turkey/ Greek1 8 : Turkey/ Greek2 9 : Turkey/ Greek3 10 : Arabic/ French 11 : Arabic/ English 12 : Arabic/ Hebrew1 13 : Arabic/ Hebrew2 14 : Farsi/ English 15 : Farsi/ French 16 : Farsi All OPTION5 INDEX...

  • Page 18: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object 4. Adjustment the optical engine This instruction is for the application to the DLP Projection 2. Notes 1) The power source insulation of this DLP Projection is not charging type and you may not use the transformer for insulation.
  • Page 19 * The pattern When Focus adjustment grounding, open the case. (5) Put on gloves that to prevent static electricity. If it’s old, replace it. (6) The work is done at the electro static-free location. Attach the tape or remove dust on the front or back pin of DMD glass.
  • Page 20 2) Select the POSITION of the adjustment menu. 5) In adjustment items, enter the Auto RGB(HEX) and press 3) As shown this , adjustment Pattern is displayed. the (G)button to enter the adjustment items, auto,atonally In menus, enter the Auto Color Balance G To Set and 4) Adjust data with using the left/right key on the remote control in order to be left/right symmetry screen<Fig 7>.
  • Page 21 Adjusting the Auto CCA 1) Required Test Equipment : CA-210 <Fig 12. Test Pattern> 3) Adjustment (1) Using the Channel key, adjust CWI-Pat.1 to the LEFT/ RIGHT (2) As adjustment, check the appearance noise in the TEST Pattern<Fig 12>. Setting the value reduced (3)~(4) step at a GREEN noise disappearing spot.
  • Page 22 (5) Adjustment finishing in case OK. (6) In case NG, Auto Measure is again practiced in 1~2 times. In cats NG, adjustment NG is managed to repractice of the 3 times. (7) Set CA-210 Sync type : Set Sync to univ. 4) RT-44SZ84DB CCA Automatic Adjustment Target Value.

  • Page 23: Block Diagram

    BLOCK DIAGRAM...
  • Page 29 MEMO...

  • Page 30: Exploded View

    EXPLODED VIEW ( 44SZ8R )

  • Page 31: Exploded View Parts List

    174-322H POWER CORD, KJP-140 KUKJE VDE 2400MM HOUSING L1=550 BLACK 3091V00653H CABINET ASSEMBLY, RT-44SZ84DB MB05DB FRONT PHANTOM FULL 4811V00099N BRACKET ASSEMBLY, GRILLE RZ-44SZ84DB MB05DA SPEAKER LG 3520V00401A INDICATOR, LED DN-44SZ80L ABS 3 PHY XCANVAS/ZENITH 4980V00A29G SUPPORTER, SCREEN AL BAR U/L...
  • Page 32 EXPLODED VIEW ( 52SZ8R )
  • Page 33 EXPLODED VIEW PARTS LIST Part No. Description 6400WESC01A SPEAKER, WOOFER C080P23K1450 ESTEC WOOFER 8OHM 15/25W 84DB 80 6400DESA01A SPEAKER,TWEETER D016D01K1450 ESTEC TWEETER(DOME) 8HMOHM 15/25W 85DB 50 174-322H POWER CORD, KJP-140 KUKJE VDE 2400MM HOUSING L1=550 BLACK 6410VHH002B POWER CORD, KJP-170F KUKJE SAA 2200MM HOUSING L1-550 BLACK 52SZ8R-TB.AAULLSK(LGEAP) 3091V00690L CABINET ASSEMBLY, 52SZ8R-TB MB05DB HD3 ENGINE 4811V00122R...

  • Page 34: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION IC806 0IMCRSG008A 74LX1G14CTR 5P SOT323-5L IC807 0IMCRMX001A MAX708SCSA MAXIM 8P SOP IC808 0IMCRSG008A 74LX1G14CTR 5P SOT323-5L D1101 0IKE431000D KIA431AF SOT-89 IC810 0IMCRSH003A GP2S40 4P DIP 0IMCRSK004A SMA-E1017 SANKEN 3P TO220 0IPRPTO002A IC810 0IMCRSJ001A...
  • Page 35 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 36 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 37 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 38 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 39 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 40 2.2M OHM 1/6 W 5.00% TA52 SW01 140-275E PUSH, SPBS222EP011 POSTEC DC50V R811 0RD2204F609 2.2M OHM 1/6 W 5.00% TA52 140-313B TACT, 2LEAD 160G(TA) LG C&D R812 0RD3302F609 33K OHM 1/6 W 5% TA52 140-313B TACT, 2LEAD 160G(TA) LG C&D R813 0RD1002F609...
  • Page 41 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION FL108 6200QJ3001A FILTER,EMI REEL/TAPING BMS400 L906 0LCML00003B MLB-201209-0120P-N2 5A MAG FL109 6200QJ3001A FILTER,EMI REEL/TAPING BMS400 L908 0LCML00004A MLB-160808-0068L-N2 1A MAG FL110 6200QJ3001A FILTER,EMI REEL/TAPING BMS400 L909 0LCML00003B MLB-201209-0120P-N2 5A MAG FL111 6200QJ3001A FILTER,EMI REEL/TAPING BMS400...
  • Page 42 2 minutes, cooling fan works after turning off power) - Allow the lamp to cool for 30 minutes before replacing it. - Replace only with the same type lamp from a LG Electronics Service Centre. Using other lamp type may cause damage to the TV and lamp.

  • Page 43: Replacement The Lamp

    (If the lamp cover is open, the lamp indicator flashes green and the TV will not turn on.) Note : - Only use LG approved lamp replacement. - Using incorrect type of lamp may cause damage to the TV or lamp.
  • Page 47 PRINTED CIRCUIT BOARD SMPS MAIN (BOTTOM) DLP DRIVER (TOP) MAIN (TOP) DLP DRIVER (BOTTOM) JACK (BOTTOM) JACK (TOP) SIDE A/V SENSOR B/D ( TOP ) AC INPUT SENSOR B/D ( BOTTOM ) INTERFACE CASE DET(TOP) CASE DET(BOTTOM) CONTROL(TOP) PRE-AMP CONTROL(BOTTOM)
  • Page 48 Aug., 2005 P/NO : 3828VD0216B Printed in Korea...

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