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Related Manuals for LG CT-25Q20 Series
Summary of Contents for LG CT-25Q20 Series
- Page 1 All manuals and user guides at all-guides.com website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html COLOR TV SERVICE MANUAL CHASSIS : MC-022A MODEL:CT-25/29M60RE/RX MODEL:CT-25/29M60VE/VQ CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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Page 2: Table Of Contents
All manuals and user guides at all-guides.com 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
All manuals and user guides at all-guides.com SAFETY PRECAUTIONS IMPORTANT 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
All manuals and user guides at all-guides.com SPECIFICATIONS 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... -
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 All manuals and user guides at all-guides.com 14. OK accepts your selection or displays the current mode. 15. LIST POWER MUTE displays the programme table. 16. EYE/ (option) switches the eye function on or off. 17. SLEEP sets the sleep timer. TV/AV 18.
- Page 7 All manuals and user guides at all-guides.com Front panel CT-25/29Q20 series RT-29FA33 series ON/OFF MENU OK MENU ON/OFF 23 4 5 CT-25/29Q40 series RT-28FZ10 series MENU MENU ON/OFF ON/OFF 1. MAIN POWER 9. +/- ( switches the set on or off. adjusts the function or selects a programme.
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Page 8: Disassembly Instructions
All manuals and user guides at all-guides.com 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
All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 25/29” LG FLAT CPT(CT-25Q20RB) 29” S/S SEB FLAT CPT ITEM ITEM RANGE N50Hz Z50Hz RANGE N50Hz Z50Hz W50Hz W50Hz 0050~00CF 009A 0050~00CF 00A3 0025~00BF 00F3 0025~00BF 00F5 0000~009F 00D0 0000~009F 00D0 0600~0900 0774...
- Page 12 00FD 00FA 00FD 00FD 00F8 00FD 00F9 7. SVC Data & PSM,SSM Data. PICTURE SETTING DATA (LINE SVC-3) 28” FLAT 25/29” LG Flat 29” S/S-Flat 25” FST 28” FST Menu Range 29” FST DVCO(Digital VCO) IBRM(BLACK CURRENT) 0~1FFH 00C8 00C8...
- Page 13 All manuals and user guides at all-guides.com 8-3. OPTION 1 Function 8-5. OPTION 3 Function Option Code Function Remark Option Code Function 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...
- Page 14 All manuals and user guides at all-guides.com 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)
- Page 15 All manuals and user guides at all-guides.com 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...
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Page 16: Block Diagram
All manuals and user guides at all-guides.com BLOCK DIAGRAM - 16 -... - Page 17 All manuals and user guides at all-guides.com - 17 -...
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Page 18: Trouble Shooting
All manuals and user guides at all-guides.com 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... - Page 19 All manuals and user guides at all-guides.com 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...
- Page 20 All manuals and user guides at all-guides.com 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...
- Page 21 All manuals and user guides at all-guides.com 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...
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Page 22: Exploded View
All manuals and user guides at all-guides.com EXPLODED VIEW P801 - 22 -... -
Page 23: Exploded View Parts List
All manuals and user guides at all-guides.com The components identified by mark critical for safety. EXPLODED VIEW PARTS LIST Replace only with part number specified. Part No. Description 25" 29" 343-B52C SUPPORTER,PCB 40AF 25” ONLY 2426GE020EJ CPT SET LGEAP 2426GE020EP 2426VSF0013 CPT SET 2426GE020EP... -
Page 24: Replacement Parts List
All manuals and user guides at all-guides.com REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION 0DD420000BB DIODE, D4L20U SHINDENGEN D862 D863 0DS141489AB DIODE,SWITCHING 1N4148 TP GRANDE - 20V IC01 0ICTMMN004B VCT3834B LG24 W/EU MICRONAS 64P ST TXT MICOM DIODE,SWITCHING 1N4148 TP GRANDE - 20V D864 0DS141489AB... - Page 25 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 27 100 OHM 1/6 W 5% TA52 P06A 366-932F CONNECTOR,IL-G LGC 7 2.5S STICK 0RD1000F609 P06B 366-922F CONNECTOR,2.5MM 7P GIL-G LG CABLE R/A 0RD3001F609 3K OHM 1/6 W 5.00% TA52 P07A 366-932D CONNECTOR,2.5MM 5P GIL-G LG CABLE S 0RD1002F609 10K OHM 1/6 W 5% TA52 387-A05J CONNECTOR,5P 2.5MM 500MM H-B...
- Page 28 All manuals and user guides at all-guides.com 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 0RS0681H609 6.8 OHM 1/2 W 5.00% TA52 R608 0RD3301F609 3.3K OHM 1/6 W 5.00% TA52 SW1101 140-315A SWITCH,TACT SKHV17910B LG C&D NON 12V R609 0RD6201F609 6.2K OHM 1/6 W 5.00% TA52 SW1102 140-315A SWITCH,TACT SKHV17910B LG C&D NON 12V R610...
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Page 30: Svc. Sheet
All manuals and user guides at all-guides.com SVC. SHEET : 3854V A0098A-S SVC. SHEET :... - Page 31 All manuals and user guides at all-guides.com 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...
- Page 32 All manuals and user guides at all-guides.com P/NO:3854VA0098A-S(1/2) 2002.03.25...
- Page 33 All manuals and user guides at all-guides.com ce.com up.html...