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LG RT-29FB50RB Service Manual

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P/NO : 3828VD0118Z
Feb.,2003
Printed in Korea
COLOR TV

SERVICE MANUAL

CHASSIS : MC-022A
MODEL:RT-29FB50RB/RE/RP/RX
MODEL:RT-29FB50VB/VE
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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  Summary of Contents for LG RT-29FB50RB

  • Page 1: Service Manual

    COLOR TV SERVICE MANUAL CHASSIS : MC-022A MODEL:RT-29FB50RB/RE/RP/RX MODEL:RT-29FB50VB/VE CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Feb.,2003 P/NO : 3828VD0118Z Printed in Korea...
  • Page 2: Table Of Contents

    CONTENTS Contents ......................... 2 Safety Precautions ....................3 Specifications ..................... 4 Control Descriptions ..................5 Disassembly Instructions ................8 Adjustment Instructions ................9 Block Diagram ....................16 T rouble Shooting ....................18 Exploded View ....................22 Exploded View Parts List ................23 Replacement Parts List ................
  • 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: Specifications

    SPECIFICA TIONS Note : Specification and others are subject to change without notice for improvement. Video input system: PAL-B/G, D/K, I/I SOUND IF : 33.4MHz (B/G) SECAM-B/G, D/K/L/L’ 32.9MHz (I/I) NTSC M 32.4MHz (D/K,L) NTSC 4.43(AV) 34.4MHz (M) NTSC- M/PAL M-N 40.4MHz (L’) Intermediate Frequency (Unit : MHz) VISION IF : 38.9MHz,33.9MHz(SECAM-L’)
  • Page 5: Control Descriptions

    I/II LIST adjusts menu settings. SLEEP EYE/ 6. VCR BUTTONS (option) TEXT Q.VIEW control a LG video cassette recorder. 7. SSM (Sound Status Memory) TIME recalls your preferred sound setting. REVEAL MODE SIZE STILL POSITION 9/4 PIP 8.
  • Page 6 14. OK accepts your selection or displays the current mode. 15. LIST POWER displays the programme table. MUTE 16. EYE/ (option) switches the eye function on or off. 17. SLEEP sets the sleep timer. TV/AV 18. Q.VIEW returns to the previously viewed programme. MENU SOUND PICTURE...
  • Page 7 RF/RT-25/29CA40 series 1. MAIN POWER MENU switches the set on or off. ON/OFF 2. POWER/STANDBY INDICATOR illuminates brightly when the set is in standby mode. dims when the set is switched on. 3. MENU selects a menu. CF/CT-25/29M30 series 4. OK accepts your selection or displays the TV/AV current mode.
  • Page 8: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS Important note Chassis Assy Removal This set is disconnected from the power supply through the Grasp both side of Frame and pull it backward smoothly. converter transformer. An isolating transformer is necessary for service operations on the primary side of the converter transformer.
  • Page 9: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Safety Precautions 5. Screen Voltage & White Balance Adjustment 1. It is safe to adjust after using insulating transformer between 5-1. Adjustment of screen manually the power supply line and chassis input to prevent the risk of (Using ADJ.Remote Control) electric shock and protect the instrument.
  • Page 10 Adjust so that middle portion of the outermost left and right vertical line looks like parallel with vertical lines of the CPT. NOTE : If production line doesn’t the production line of LG TV,receive available deflection adjustment pattern. EC (East-west Coner) Adjust so that the vertical line at every 4 corners of the screen 6-2.
  • Page 11 25/29” LG FLAT CPT(CT-25Q20RB) 29” S/S SEB FLAT CPT ITEM Z50Hz ITEM RANGE N50Hz W50Hz RANGE N50Hz Z50Hz W50Hz 0050~00CF 009A 0050~00CF 00A3 0025~00BF 00F3 0025~00BF 00F5 0000~009F 00D0 0000~009F 00D0 0600~0900 0774 0600~0900 0744 0000~003F 0019 0000~003F 0016 0400~0EFF...
  • Page 12 00FD 00FD 00F8 00FD 00F9 7. SVC Data & PSM,SSM Data. PICTURE SETTING DATA (LINE SVC-3) 28” FLAT Menu Range 25/29” LG Flat 29” S/S-Flat 25” FST 28” FST 29” FST DVCO(Digital VCO) IBRM(BLACK CURRENT) 0~1FFH 00C8 00C8 00C8 00C8...
  • Page 13 8-3. OPTION 1 Function 8-5. OPTION 3 Function Option Code Function Remark Function Option Code Remark 4:3 NORMAL MODEL TXT Model W/O GAME WIDE GAME WIDE FLAT MODEL W/O TXT Model GAME PACK GAME(HINDI MICOM) W/O TOP(FLOP BASIC) FORCED MONO NOT SETTING MONO WITH TOP FORCED MONO SETTING...
  • Page 14 8-7. OPTION 4 Function OPTION CODE FUNTION Arab.Asia English Only(Eng.) 3834 Arab(Eng/Fr/Arab) Urdu(Eng/Fr/Arab/Urdu) Asia(Eng/Fr/Indonesia) Farsi English Only(Eng.) 3834 Arab(Eng/Fr/Arab) Farsi(Eng/Fr/Arab/Farsi) Arab-Asia English Only(Eng.) 3804 Arab(Eng/Fr/Arab) LANG. Urdu(Eng/Fr/Arab/Urdu) Arab all(Eng/Fr/Arab/Urdu/Farsi) Farsi ONly(Eng/Farsi) Asia(Eng/Fr/Indonesia/Malay) WEST-EU English Only(Eng.) 3834 Only(W/TXT) EU-7(E.Ger/Fr/Ita/Spain/Holand/Port) EU-NORTH(E-Ger/Fr/Holand/Swe/Nor/Den/Fin) EAST-EU English Only(Eng.) 3834 Only(W/TXT) Cyrilic(E.Russia)
  • Page 15 OPTION CODE FUNTION Farsi only WEST-EU 3834 only(W/TXT) EAST-EU Turkey Cyrillic3 Arab/English Farsi/English TXT-L Arab-Asia WEST-EU 3834 only(W/TXT) EAST-EU Turkey Cyrillic3 Arab/English WEST EU WEST-EU 3834 only(W/TXT) EAST-EU Turkey Cyrillic3 EAST EU WEST-EU 3834 only(W/TXT) EAST-EU Turkey Cyrillic3 28” WIDE FLAT WEST-EU 3834 only(W/TXT) EAST-EU...
  • Page 16: Block Diagram

    BLOCK DIAGRAM - 16 -...
  • Page 17 - 17 -...
  • Page 18: Trouble Shooting

    TROUBLE SHOOTING RF- STEREO Selected correct system In menu Check the waveform Check / Replace At pin 17 of TU101 TU 101 Check the waveform Check The Voltage Check The voltage At pin 24,25 of IC661 At pin 16,33,46, of IC661 At pin of IC610, IC853 Check the waveform Check / Replace...
  • Page 19 NO RASTER CHECK B+ At D807 cathode Normal Abnormal Open Is the voltage at Check Pin 25, 54 of IC01 3.3V? Fuse of AC line Check / Replace Fuse , DB801 Check the In/out of Check pin 24 Check the Voltage IC06, IC07 Of IC01(H - Out) Of C804...
  • Page 20 No Picture / No Sound Is any OSD displayed? Check receiving system in MENU Check IC01 pin37,42,43,44 & execute Auto - Program. (IK, R,G,B) Does the auto - Program Operate properly. Check / Replace IC01 Store on manual - program MENU Check Check 5V, 33V &...
  • Page 21 AV Stereo Select correct system In menu Check the connection Of AV equipment Check the the waveform At pin47 of IC661 Check TU101 Tuner Check the voltage Check the waveform Of pin16,20 At pin 24, 25, of IC661 Check waveform Check / Replace At pin 4, 12 of IC602 IC602...
  • Page 22: Exploded View

    EXPLODED VIEW - 22 -...
  • Page 23: Exploded View Parts List

    6140VC2005F COIL,DEGAUSSING 29 FLAT ASSY (W) SELLA TECH 2001R+D07L 6150V-5006C DY,DC29SFALJ 6150V-5006D DY,DC29SPFL3 170-844K CPT EARTH 29 98T 4LUG LEAD SET SPRING(50MM) 3091V00445B CABINET ASSEMBLY,RT-29FB50RB STEREO MC022A . 3091V00472B CABINET ASSEMBLY,RT-29FB50RE 3091V00445C CABINET ASSEMBLY,RT-29FB50RX 5020V00676A BUTTON,CONTROL 5020V00715A BUTTON,CONTROL ABS 320-075B SPRING,COIL NON DIA:7.5MM, H:15.5MM...
  • Page 24: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION DIODE,RECTIFIERS EU1DGR TP “ 0DR100009FA DIODE,RECTIFIERS EU1ZV(1) TP SANKEN D803 0DD100009AM HIC920 0IZZVF0018A STK396-110 11P ST SCAN VELOCITY MODU. SINGLE SCAN (BW 6M) DIODE,RECTIFIERS EU1DGR TP “ 0DR100009FA IC01 0ICTMMN006B...
  • Page 25 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 26 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 27 CP112 0CE106DF618 10UF STD 16V M FL TP5 CP12 0CN1030F679 10000P 16V M Y TA52 366-932B CONNECTOR,2.5MM 3P GIL-G LG CABLE S 10000P 16V M Y TA52 CP13 0CN1030F679 P03A 366-921J CONNECTOR,2.5MM 10P GIL-G LG CABLE . 47UF STD 16V M FL TP5 CONNECTOR,10P 2.5MM 500MM H-B UL1007...
  • Page 28 0RD1000F609 CONNECTOR,2.36PAI 1P . K/M AUTO 100 OHM 1/6 W 5% TA52 P903 366-009D R130 0RD1000F609 CONNECTOR,2.5MM 3P GIL-G LG CABLE S 100 OHM 1/6 W 5% TA52 P920 366-932B R131 0RD1000F609 CONNECTOR,2.5MM 3P GIL-G LG CABLE S 470 OHM 1/6 W 0.05 TA52...
  • Page 29 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 30 R908 0RD1000F609 ACCESSORIES 0RCZVTA002D 1/2 W 1.5K,10%,PLIKOR(HIGH SURGE) R909 0RD5600H609 560 OHM 1/2W 5% 3828VA0325F MANUAL,OWNERS MC022A NEU LG AR/EN 077V/Z/088A/B TX 0RCZVTA002D 1/2 W 1.5K,10%,PLIKOR(HIGH SURGE) 3828VA0325B R910 MANUAL,OWNERS NEU LG EN 077V/Z/ 0RCZVTA002D 1/2 W 1.5K,10%,PLIKOR(HIGH SURGE) 3828VA0325P...
  • Page 31 P/NO:3854VA0098A-S(1/2) 2002.03.25...
  • Page 32 PRINTED CIRCUIT BOARD COMPONENT LOCATION GUIDE P/N: 3854VA0098A-S(2/2) DATE: 2002.03.25 C01 ..B4 C402 ..G4 C806..F2 F854..E3 G70 ..E2 J160 ..C4 J251 ..D5 J345 ..A3 Q110 ..B5 R140 ..A5 R526 ..C4 R908 ..A1 C02 ..B4 C403 ..G3 C807..F3 F855..D2 G71 ..E2 J161 ..C3 J252 ..D3 J346 ..E2...
  • Page 33: Svc. Sheet

    SVC. SHEET : 3854V A0098A-S SVC. SHEET :...