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LG RT-29FB55RB Service Manual

Chassis : mc-049a
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COLOR TV

SERVICE MANUAL

CHASSIS : MC-049A
MODEL:RT-29FB55R/RB/RE
MODEL:RT-29FB55RP/RQ/V
MODEL:RT-29FB55VB/VE/VQ
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
VIDEO
L
AUDIO
R
MENU
OK
VOL
PR
ON/OFF
AV3
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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  Summary of Contents for LG RT-29FB55RB

  • Page 1: Service Manual

    website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html COLOR TV SERVICE MANUAL CHASSIS : MC-049A MODEL:RT-29FB55R/RB/RE MODEL:RT-29FB55RP/RQ/V MODEL:RT-29FB55VB/VE/VQ CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. VIDEO AUDIO MENU ON/OFF...
  • Page 2: Table Of Contents

    CONTENTS Contents ........................2 Safety Precautions....................3 Control Descriptions..................4 Specifications......................7 Adjustment Instructions .................8 T rouble Shooting....................12 Printed circuit board..................16 Block Diagram ......................18 Exploded View....................20 Exploded View Parts List ................21 Replacement Parts List .................22 SVC. Sheet........................- 2 -...
  • 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: Control Descriptions

    STOP (Volume Up/Down) adjusts the volume. adjusts menu settings. I/II LIST SLEEP EYE/ 6. VCR BUTTONS (option) control a LG video cassette recorder. Q.VIEW FAVOURITE TEXT 7. SSM (Sound Status Memory) recalls your preferred sound setting. TIME REVEAL MODE 8. I/II (option)
  • Page 5 15. LIST displays the programme table. 16. EYE/ (option) POWER switches the eye function on or off. MUTE 17. SLEEP sets the sleep timer. 18. Q.VIEW returns to the previously viewed programme. 19. FAVOURITE TV/AV selects a favorite programme. MENU SOUND PICTURE 20.
  • Page 6: Front Panel

    Front panel RF/RT-29FB75 series 1. MAIN POWER switches the set on or 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. RF/RT-28FZ15 series 4. OK accepts your selection or displays the MENU ON/OFF...
  • Page 7: Specifications

    P/N of B.O.M 5) Warm up TV set for more than 20min. before the 230~, 50/60Hz measurement. Test and Inspection Method 1) performance:Follow the Standard of LG TV test 2) Standards of Etc. requirement - Safety: IEC60065 - EMC: EN55020,EN55013 General Specification...
  • Page 8: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object 4. Purity & Convergence adjustment These instructions are applied to all of the color TV, MC-049A. As preparatory operations before CPT Assembling assembling CPT, wind cotton Tape for 2. Notes protecting to CPT NECK and DY, CPT connection parts.
  • Page 9: Screen Voltage Adjustment

    (5) Open angle of the two tab of 6 pole magnet by isogonic 2. White balance IIC Parameter angle and accord with vertical line of Red/Blue and Green. Program TWBeng2.0 Program TWBeng2.0 Speed Delay (6) Maintain as angle of (5) and rotate the tab to accord with horizontal line.
  • Page 10 N50Hz(PAL) N60Hz(NTSC) Menu Variable range 29” 29” -512~511 -512~511 -512~511 -512~511 32~2047 -256~255 -512~511 <Fig. 2>PAL Digital pattern (EU05CH) -512~511 ANGLE -512~511 (4) VS (Vertical Shift) adjustment: Adjust so that the geometric vertical center line is in accord -512~511 with vertical center line of CPT. UPCOR -512~511 (5) HS(Horizontal Shift) adjustment:...
  • Page 11 8-4. OPTION2 Function Option Code Function TSEARCH Without TURBO SEARCH With TURBO SEARCH 200PR 100 PROGRAM SAVE 200 PROGRAM SAVE Without EYE With EYE TX019 8KEY 8KEY 4KEY 4KEY 8-5. OPTION3 Function Option Code Function REMARK SYSTEM ACMS Without ACMS Function With ACMS Function FLOT TXT TOP TXT...
  • Page 12: Trouble Shooting

    TROUBLE SHOOTING RF- STEREO Selected correct system In menu Check the waveform Check / Replace IF 1 of TU101 TU 101 Check the waveform Check The Voltage Check The voltage At pin 4, 5 of IC11 At pin 2, 19, 20, 21, 24 of IIC11 At pin of IC821, IC822, Q807 Check the waveform Check / Replace...
  • Page 13 NO RASTER CHECK B+ At D829 cathode Normal Abnormal Open Is the voltage at Check each pin voltage of IC11 Fuse of AC line Check / Replace Fuse Check the In/out of Check pin 60 Check the Voltage regulator Of IC11(H - Out) Of C803 (IC821, IC822 Check &...
  • Page 14 No Picture / No Sound Is any OSD displayed? Check receiving system in MENU Check IC11 pin71,72,73 & execute Auto - Program. (R,G,B out) Does the auto - Program Operate properly. Store on manual - program MENU Go to Check SMPS Trans Check 1.8V, 3.3V, Check pin40(V out 1) No Sound /...
  • Page 15 AV Stereo Select correct system In menu Check the connection Of AV equipment Check the the waveform Check TU101 Tuner At pin16, 17 of IC11 Check the voltage Check the waveform Of pin2, 19, 20, 21,24 of IC11 At pin4, 5, of IC11 Check the signal line of Check waveform SPK-L,R...
  • Page 16: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN - 16 -...
  • Page 17 CPT+VM - 17 -...
  • Page 18: Block Diagram

    BLOCK DIAGRAM - 18 -...
  • Page 19 - 19 -...
  • Page 20: Exploded View

    EXPLODED VIEW - 20 -...
  • Page 21: Exploded View Parts List

    CPT ASSEMBLY, A68QCU759X 66M7ND +0.3G[V] 0G[H] RT-29FB55RE (ALT) 6335V29015A CPT ASSEMBLY, A68QCU757X 770MIF 0.3G[V] 0.3G[H] LPDSG M,ITC11,S/F 6335V29020R CPT ASSEMBLY, A68QCU770X54 R(-0.10G) 0G LG-PHILIPS DISPLAYS GUMI,ITC 6335V29020S CPT ASSEMBLY, A68QCU770X54 T(-0.20G) 0G GUMI,ITC RT-29FB55VQ.STLLKS 6341V29009C BARE CPT ASSEMBLY, LG A68QCU770X,1023A,TINT...
  • Page 22 SVC. SHEET : 3854V A0146A-S...
  • Page 23 EXPLODED VIEW 320# - 20 -...
  • Page 24 CPT EARTH, 29 98T 4LUG LEAD SET SPRING(50MM) 174-009V POWER CORD POWER(W/HOLD,HOUSING)L=400,4.0 4810V00726A BRACKET, RN-29FB50 MC022A HIPS 60HR CPT SUPPORTER 3091V00445K CABINET ASSEMBLY, RT-29FB55RB(SET) STEREO E_PHONE MC049A #117A 5020V00676C BUTTON, CONTROL RT-29FB55RB(#117A) ABS, HF-380 6KEY 320-075B SPRING, COIL DIA:7.5MM, H:15.5MM 5020V00677E...
  • Page 25: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q801 0TR421009CB BF421L(AMMO)TO-92 TP PHILIPS 2SC5343Y TP AUK Q802 0TR534309AA HIC920 0IZZVF0018A STK396-110 11P ST 0TR102009AB KRC102M(KRC1202) KEC TP Q803 IC11 0IZZVA1001A VCT3804F DIP 8P DIP VCTI49XY PSSDIP88 Q804 0TR102009AB KRC102M(KRC1202) KEC TP...
  • 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 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 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 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 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 31 TH801 163-058D THERMISTOR,03-07MX JA HWA 7 OHM 20% 0RD1000F609 100 OHM 1/6 W 5% TA52 RP03 TU101 6700VS0002B TUNER,TAEW-G301D LG INOTEK MULTI VS RP04 0RD1000F609 100 OHM 1/6 W 5% TA52 TU102 6700MF0001D TUNER,TAFD-Z241P MULTI FS 4SYS,2 IN 1,SUB RP06...
  • Page 32 P/NO: 3854VA0146A - S1 2004.4.16...
  • Page 33: Svc. Sheet

    SVC. SHEET : 3854V A0146A-S...
  • Page 34 Aug.,2004 P/NO : 3828VD0178B Printed in Korea...