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LG RE-28CB80RX Service Manual

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COLOR TV

SERVICE MANUAL

CHASSIS : MC-022A
MODEL:RE/RL-28CB80RX
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MENU OK
MENU OK
VOL
VOL
PR
PR
VIDEO
VIDEO
L/MONO
L/MONO
AUDIO
AUDIO
R
R
ON/OFF
ON/OFF
A/V3
A/V3
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG RE-28CB80RX

  • Page 1: Service Manual

    website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html COLOR TV SERVICE MANUAL CHASSIS : MC-022A MODEL:RE/RL-28CB80RX CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MENU OK MENU OK VIDEO VIDEO L/MONO L/MONO AUDIO AUDIO ON/OFF ON/OFF A/V3 A/V3...

  • 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

    LIST (Volume Up/Down) SLEEP EYE/ adjusts the volume. TEXT Q.VIEW adjusts menu settings. 6. VCR BUTTONS (option) control a LG video cassette recorder. TIME REVEAL MODE SIZE STILL POSITION 9/4 PIP 7. SSM (Sound Status Memory) recalls your preferred sound setting.

  • Page 6: Battery Installation

    14. OK accepts your selection or displays the current mode. 15. LIST displays the programme table. POWER MUTE 16. EYE/ (option) switches the eye function on or off. 17. SLEEP sets the sleep timer. 18. Q.VIEW TV/AV returns to the previously viewed programme. selects a favorite programme.

  • Page 7: Front Panel

    Front panel 1. MAIN POWER switches the set on or off. CE/CL-29Q40 series 2. MENU (option) selects a menu. MENU ON/OFF (Programme Up/Down) (option) selects a programme or a menu item. switches the set on from standby. 4 5 6 (Volume Down/Up) (option) RE/RL-29FA33 series adjusts the volume.

  • 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 doesnÕt 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) 28Ó FLAT Menu Range 25/29Ó LG Flat 29Ó S/S-Flat 25Ó FST 28Ó FST 29Ó 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 28Ó 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

    DESCRIPTIONS 343-B52A SUPPORTER,PCB 112-C28G CPT SET A66EAK071*11(PHILIPS)28 120-C77K SPEAKER,GENERAL C122P02K145E LG FOSTER 8 OHM 7/10 WW 82 DB 6140VC2001G COIL,DEGAUSSING CU 28 50TURN 14 OHM . 170-844J CPT EARTH,29 96T 2LUG 2P HUG . 3091V00459C CABINET ASSY,CE-28CB80RX MALOCAL STEREO MC022A PHILIPS CPT...

  • Page 24: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D858 0DD200009AH DIODE,RECTIFIERS RU2AMV(1) TP SANKEN DIODE,D4L20U SHINDENGEN D860 0DD420000BB IC01 0ICTMMN004B IC,VCT3834B LG24 W/EU MICRONAS 64P ST TXT MICOM 0DD060009AC DIODE,RECTIFIERS TVR06J 600V 250NSEC - D861 Ò...
  • 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 10UF STD 16V M FL TP5 C685 0CE106DF618 P401 366-043K CONNECTOR,PLUG(4P) 0CX5600K409 56P 50V J SL TA52 366-932B C686 P501 CONNECTOR,2.5MM 3P GIL-G LG C687 0CX5600K409 56P 50V J SL TA52 P502 366-932B CONNECTOR,2.5MM 3P GIL-G LG C688 0CX5600K409 56P 50V J SL TA52 P601 366-932B CONNECTOR,2.5MM 3P GIL-G LG...
  • 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 0RD1000F609 100 OHM 1/6 W 5% TA52 0RD1001F609 1K OHM 1/6 W 5% TA52 SWITCH SW01 140-315A SWITCH,TACT SKHV17910B LG C&D NON 12V SW02 140-315A SWITCH,TACT SKHV17910B LG C&D NON 12V SWITCH,TACT SKHV17910B LG C&D NON 12V SW03 140-315A SW04 140-315A SWITCH,TACT SKHV17910B LG C&D NON 12V...
  • Page 31 PRINTED CIRCUIT BOARD P/N: 3854VA0098A-S(2/2) COMPONENT LOCATION GUIDE 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: Svc. Sheet

    SVC. SHEET : 3854V A0098A-S SVC. SHEET :...
  • Page 33 Dec.,2002 P/NO : 3828VD0118Y Printed in Korea...

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Rl-28cb80rx

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