LG RT-25/29FB30R/V/VX Service Manual
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LG RT-25/29FB30R/V/VX Service Manual

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P/NO : 3828VD0118U
Feb.,2003
Printed in Korea
COLOR TV

SERVICE MANUAL

CHASSIS : MC-022A
MODEL:RT-25/29FB30R/V/VX
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-25/29FB30R/V/VX

  • Page 1: Service Manual

    COLOR TV SERVICE MANUAL CHASSIS : MC-022A MODEL:RT-25/29FB30R/V/VX CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Feb.,2003 P/NO : 3828VD0118U 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: Front Panel

    Front panel RF/RT-29FA33 series CF/CT-25/29Q20 series ON/OFF MENU OK MENU ON/OFF 23 4 5 RF/RT-28FZ10 series CF/CT-25/29H30 series MENU ON/OFF MENU VIDEO (L/MONO) AUDIO (R) ON/OFF S-VIDEO VIDEO 2 6 34 5 (L/MONO) AUDIO CF/CT-34M20 series RF/RT-29FB30 series ON/OFF MENU VIDEO L/MONO AUDIO...

  • 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 P801 - 22 -...

  • Page 23: Exploded View Parts List

    The components identified by mark critical for safety. EXPLODED VIEW PARTS LIST Replace only with part number specified. Part No. Description 25" 29" 343-B52A 4980V00432A SUPPORTER,PCB 6341V25004A 6341V29009A CPT ASSY 6341V29009B CPT ASSY A68QCU759X LGPD DY S-FOCUS 6335V29014A CPT ASSY A68QCU759X 66L7ND 6400GESS01A 6400VA0031A SPEAKER...

  • Page 24: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D866 0DD410000AD DIODE,RECTIFIERS RU4AM,LF-L1 D867 0DD414809ED DIODE,1N4148 TA HIC920 0IZZVF0018A IC,STK396-110 11P ST SCAN VELOCIT D901 0DR210009AC DIODE,RECTIFIERS BAV21 DO35 200V 0.2 IC01 0ICTMMN005B IC,VCT3834B LG23 E/EU D902 0DR210009AC DIODE,RECTIFIERS BAV21 DO35 200V 0.2...
  • 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 P901 P903 366-009D CONNECTOR (CIRC),2.36PAI 1P R102 0RD5100F609 510 OHM 1/6 W 5.00% TA52 P920 366-932B CONNECTOR (CIRC),2.5MM 3P GIL-G LG R119 0RD0102F609 10 OHM 1/6 W 5.00% TA52 1K OHM 1/6 W 5.00% TA52 R126 0RD1001F609 RESISTOR 0RD1001F609 1K OHM 1/6 W 5.00% TA52...
  • Page 28 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 29 0RD1000F609 100 OHM 1/6 W 5.00% TA52 R663 0RD1000F609 100 OHM 1/6 W 5.00% TA52 SW01 140-315A SWITCH,TACT SKHV17910B LG C&D NON 12V R664 0RD1002F609 10K OHM 1/6 W 5.00% TA52 SW02 140-315A SWITCH,TACT SKHV17910B LG C&D NON 12V 0.47M OHM 1/2 W 5% TA52 PILKOR SW03 SWITCH,TACT SKHV17910B LG C&D NON 12V...
  • Page 30 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION SK901 6620VBC003A SOCKET (CIRC),CPT PCS030A 8PIN 14/360 TH801 163-058D THERMISTOR,03-07MX 7 OHM 20% 80/60 TU101 6700MF0001E TUNER,TAFD-Z242D LG MULTI FS 4SYS,DI VD801 164-003K VARISTOR,SVC621D-14A 620V 0% UL/C - 30 -...
  • Page 31 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 32 P/NO:3854VA0098A-S(1/2) 2002.03.25...

  • Page 33: Svc. Sheet

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

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