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LG RT-29CC25VX Service Manual

Lg rt-29cc25vx (chassis mc049a) color tv service manual
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COLOR TV

SERVICE MANUAL

CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : 3828VD0194R
ON/OFF
CHASSIS : MC049A
MODEL : RT-29CC25VX
MENU
OK
VOL
PR
Aug., 2005

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  Summary of Contents for LG RT-29CC25VX

  • Page 1: Service Manual

    COLOR TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MENU ON/OFF CHASSIS : MC049A MODEL : RT-29CC25VX Aug., 2005 P/NO : 3828VD0194R...
  • 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........................
  • 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 CF/CT-25/29Q25 series 1. MAIN POWER switches the set on or off. ON/OFF MENU OK 2. POWER/STANDBY INDICATOR illuminates brightly when the set is in standby mode. dims when the set is switched on. RF/RT-28/32FZ15 series 3. MENU selects a menu. MENU 4.
  • Page 7: Specifications

    P/N of B.O.M 5) Warm up TV set for more than 20min. before the 230V~, 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...
  • Page 17 SIDE A/V...
  • Page 18: Block Diagram

    BLOCK DIAGRAM...
  • Page 20: Exploded View

    EXPLODED VIEW P801...
  • Page 21: Exploded View Parts List

    5020V00845B BUTTON, POWER RF-29CC25V ABS, HF-380 1KEY 7227S00117A 3809V00390H BACK COVER ASSEMBLY, RT-29CC25V 2PHONE KUMI-AK(C/SKD) 8G068 6871VMMZW8K PWB(PCB) ASSEMBLY,MAIN M.I MC049A RT-29CC25VX NFELEDK SY-E.N.I.E 68719SM169A PWB(PCB) ASSEMBLY,SUB M.I MC049A 29CC20 SIDE AV SY-E.N.I.E 7 332-229G SCREW,DRAWING HEXAGON D22 L40 NON 1PTF0403116 SCREW TAP TITE(P),TRUSS HEAD + D4.0 L16.0 MSWR3/FZB...
  • Page 22: Replacement Parts List

    REPLACEMENT PARTS LIST For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 23 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 24 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 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 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION FILTER & CRYSTAL FB1241 125-123A FERRITE BFD3565R2F(TAPING) FB401 125-022K FERRITE AXIAL 62MM 1UH NY 3.5X6.0MM FB801 125-022K FERRITE AXIAL 62MM 1UH NY 3.5X6.0MM FB802 125-022K FERRITE AXIAL 62MM 1UH NY 3.5X6.0MM FB803 125-022K FERRITE AXIAL 62MM 1UH NY 3.5X6.0MM...
  • Page 28 P/NO: 3854VA0146A - S1 2004.4.16...
  • Page 29: Svc. Sheet

    SVC. SHEET : 3854V A0146A-S...