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LG Electronics CT-25/29M60RE/RX manual

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Table of contents for the manual

  • Page 1

    COLOR TV SER VICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS : MC-022A MODEL:CT -25/29M60RE/RX MODEL: CT -25/29M60VE/VQ website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html Dec.,2002 Printed in Korea P/NO : 3828VD0118J[...]

  • Page 2

    - 2 - CONTENTS Contents ................................................................................................................. 2 Saf ety Pr ecautions ............................................................................................3 Specifications ................................................................................[...]

  • Page 3

    - 3 - SAFETY PRECAUTIONS Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by i n 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-RADIATIO[...]

  • Page 4

    - 4 - SPECIFICA TIONS Note : Specification and others are subject to change without notice for improvement. O Video input system: PAL-B/G, D/K, I/I SECAM-B/G, D/K/L/L’ NTSC M NTSC 4.43(AV) NTSC- M/PAL M-N O Intermediate Frequency (Unit : MHz) VISION IF : 38.9MHz,33.9MHz(SECAM-L’) COLOR IF : 34.47MHz(4.43) 35.32MHz(3.58) : NTSC-M VIF-4.25000MHz [...]

  • Page 5

    - 5 - DESCRIPTION OF CONTROLS All the functions can be controlled with the remote control handset. Some functions can also be adjusted with the buttons on the front panel of the set. Remote control handset Before you use the remote control handset, please install the bat- teries. See the next page. 1. POWER switches the set on from standby or off t[...]

  • Page 6

    - 6 - 14. OK accepts your selection or displays the current mode. 15. LIST displays the programme table. 16. EYE/ * (option) switches the eye function on or off. 17. SLEEP sets the sleep timer . 18. Q.VIEW returns to the previously viewed programme. selects a favorite programme. 19. PIP BUTT ONS (option) PIP switches the sub picture on or off. PR +[...]

  • Page 7

    - 7 - 1. MAIN POWER switches the set on or off. 2. POWER/ST ANDBY INDICA TOR illuminates brightly when the set is in standby mode. dims when the set is switched on. 3. MENU selects a menu. 4. OK accepts your selection or displays the current mode. 5. D D / E E (Programme Up/Down) selects a programme or a menu item. switches the set on from standby [...]

  • Page 8

    - 8 - Fig. 2-1 Fig. 2-2 CPT PCB Remove Screws MAIN PCB CNTROL PCB DISASSEMBL Y INSTRUCTIONS Important note This set is disconnected from the power supply through the converter transformer. An isolating transformer is necessary for service operations on the primary side of the converter transformer. Back Cabinet Removal Remove the screws residing on[...]

  • Page 9

    - 9 - 1. Safety Precautions 1. It is safe to adjust after using insulating transformer between the power supply line and chassis input to prevent the risk of electric shock and protect the instrument. 2. Never disconnect leads while the TV receiver is on. 3. Don't short any portion of circuits while power is on. 4. The adjustment must be done [...]

  • Page 10

    - 10 - 6. Deflection Data Adjustment (Line SVC-2) NOTE : How to enter into the Line Service Mode with a remocon. 1.Power off. 2.Press the Red button. 3.Press the Green button. 4.Press the Yellow button. 5.Press the Cyan button. 6.Press the OK button. 7.Power On. 6-1. Preparation for Deflection Adjustment 1) At adjustment mode(IN-START button on rem[...]

  • Page 11

    - 11 - ITEM RANGE Z60Hz W60Hz N60Hz Z50Hz W50Hz 25” 29” 25” 29” 29” 29” 29” 29” 25” 25” 25” 25” N50Hz VA VL SC VS HS EW ET EP ES EC PIP P 008A 00F8 00E1 0733 001C 0C59 07F3 07BF 085F 073E 0009 -22 0 0 0 0 0 0 25 29 0 0 -22 0 0 0 0 0 0 25 29 0 0 14 0 0 0 0 0 0 -16 29 0 0 14 0 0 0 0 0 0 -16 29 0 0 0 -5 0 43 4 15 -6 -2 0 12 0 0[...]

  • Page 12

    - 12 - 7. SVC Data & PSM,SSM Data. PICTURE SETTING DATA (LINE SVC-3) Menu DVCO(Digital VCO) IBRM(BLACK CURRENT) WDRM(WHITE CURRENT) BCLT(BCL THERSHOLD BCLTM(BCL TIME) BCLGA(BCL GAIN) SVGA(SVM GAIN) SVDEL(SVM DELAY) SVD1(SVM DELAY1) LDLY(L DELAY) DSCC(Discharge Sample) DSCV(Vertical Discharge) 0~1FFH 0~3FFH 0~7FFH 0~1FFH 0~1FFH 0~01FF 0~01FF 00C[...]

  • Page 13

    - 13 - 8-3. OPTION 1 Function 8-4. OPTION 2 Function Only Austrailia EYE DEG TILT KEY CH+AU ACMS TOP WIDE Option Code 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Function Remark 4:3 NORMAL MODEL WIDE FLAT MODEL W/O TOP(FLOP BASIC) WITH TOP Without ACMS funtion With ACMS funtion ALL NATION Frequency Table WITHOUT EYE WITH EYE Without DEGAUSSING With DEGAUSSING [...]

  • Page 14

    - 14 - CODE 0 1 2 3 0 1 2 0 1 2 3 4 5 0 1 2 0 1 2 3 0 1 2 3 4 5 0 1 0 1 2 3 0 1 2 3 0 FUNTION English Only(Eng.) Arab(Eng/Fr/Arab) Urdu(Eng/Fr/Arab/Urdu) Asia(Eng/Fr/Indonesia) English Only(Eng.) Arab(Eng/Fr/Arab) Farsi(Eng/Fr/Arab/Farsi) English Only(Eng.) Arab(Eng/Fr/Arab) Urdu(Eng/Fr/Arab/Urdu) Arab all(Eng/Fr/Arab/Urdu/Farsi) Farsi ONly(Eng/Far[...]

  • Page 15

    - 15 - CODE 0 1 2 3 5 8 0 1 2 3 5 0 1 2 6 0 1 2 6 0 1 2 4 5 6 FUNTION WEST-EU EAST-EU Turkey Cyrillic3 Arab/English Farsi/English WEST-EU EAST-EU Turkey Cyrillic3 Arab/English WEST-EU EAST-EU Turkey Cyrillic3 WEST-EU EAST-EU Turkey Cyrillic3 WEST-EU EAST-EU Turkey Cyrillic3 Arab/English Farsi/English Farsi only 3834 only(W/TXT) Arab-Asia 3834 only([...]

  • Page 16

    BLOCK DIAGRAM - 16 - MAIN SPEAKER MAIN SPEAKER L R L R TUNER -1 MAIN TUNER - 2 FOR PIP (W/O PIP Option) A V -1 A V -2 A V -3 Y&C A V -1 A V -2 SIF AF(SECAM L) CXA CXA - - 2040 2040 A V A V SWITCH SWITCH H/P OUT SDA SDA - - 9489X 9489X PIP Processor PIP -CVBS SCART -1 RGB & FB SELECTED CVBS FOR PIP Y , Pb ,Pr SELECTED CVBS FOR MAIN H- SYNC R[...]

  • Page 17

    - 17 - 1 1 1 10 V(Flat) 120V (Normal) 12 V 12 33 V 14 16 18 17 V Sound Vcc (35V OPT .) 8 V 278 R05 LD3.3V KA78A09 78 L05 TDA -7297 Sound AMP H - DRIVE FBT PRE -AMP EEPROM LED TDA6109 MSP -34XX (Sound Processor) 7805 T uner (Main) VCT3834 LD3.3V TDA - 2006 (Mono Opt.) SDA - 9489X (PIP Processor) CXA - 2040AQ (Video Switch) EYE(Opt.) T ilt(Opt.) STK3[...]

  • Page 18

    TROUBLE SHOO TING - 18 - RF - STEREO Selected correct system In menu Check the waveform At pin 17 of TU101 Check the waveform At pin 24,25 of IC661 Check the waveform At pin 4,12 of IC602 Check the V oltage At pin 6, 7 of IC602 Check the waveform At pin 1, 2, 14, 15 of IC602 Check the V oltage At pin 3,13 of IC602 NO Check / Replace TU 101 NO NO NO[...]

  • Page 19

    - 19 - NO RASTER CHECK B+ At D807 cathode Is the voltage at Pin 25, 54 of IC01 3.3V? Check Fuse of AC line Check / Replace Fuse , DB801 Check the V oltage Of C804 Check the V oltage Pin 3 of IC801 Check / Replace IC801, IC803, IC802 Check / Replace Fuse DB801 Check pin 24 Of IC01(H - Out) Check Q402 Collector waveform Check T401 & each pin volt[...]

  • Page 20

    - 20 - No Picture / No Sound Is any OSD displayed? Check receiving system in MENU & execute Auto - Program. Does the auto - Program Operate properly . Store on manual - program MENU Check 5V , 33V & IIC Bus Line Of T uner . Is the CVBS signal OK. (IC01 pin10 or 22) Check R,G,B signal At IC01, pin42,43,44 Check / Replace CPT Board component [...]

  • Page 21

    - 21 - A V Stereo Select correct system In menu Check the connection Of A V equipment Check the the waveform At pin47 of IC661 Check TU101 T uner Check the waveform At pin 24, 25, of IC661 Check waveform At pin 4, 12 of IC602 Check the voltage At pin6,7 of IC602 Check the waveform At pin 1,2,14,15 of IC602 Check the voltage Of pin16,20 Check / Repl[...]

  • Page 22

    - 22 - 520 501 310 600 601 700 300 104 330 320 120 540 550 112 170 150 913 943 400 P801 EXPLODED VIEW[...]

  • Page 23

    - 23 - EXPLODED VIEW P AR TS LIST The components identified by mark is critical for safety. Replace only with part number specified. 104 343-B52C - SUPPORTER,PCB 40AF 25” ONLY 112 2426GE020EJ - CPT SET LGEAP 2426GE020EP 2426VSF0013 CPT SET 2426GE020EP 2426VSF0010 CPT SET 120 120-C77G 120-C77G SPEAKER,C122P02K1459 MOTOR JOY 8 OHM 10/15W 150 6140VC[...]

  • Page 24

    - 24 - REPLA CEMENT P AR TS LIST LOCA. NO P ART NO DESCRIPTION D862 D863 D864 D866 D867 D901 D902 D903 D904 LD1 101 ZD101 ZD102 ZD302 ZD303 ZD401 ZD402 ZD501 ZD601 ZD610 ZD910 ZD91 1 ZD912 Q06 Q108 Q180 Q181 Q182 Q183 Q184 Q185 Q186 Q187 Q201 Q202 Q301 Q302 Q303 Q401 Q402 Q506 Q507 Q508 Q509 Q621 Q671 Q672 Q806 Q807 Q853 Q901 0DD420000BB 0DS141489A[...]

  • Page 25

    - 25 - LOCA. NO P ART NO DESCRIPTION C01 C02 C03 C04 C06 C07 C08 C10 C102 C103 C104 C107 C108 C1 1 C1 10 C1 14 C120 C1208 C121 C1240 C1241 C125 C130 C14 C16 C17 C180 C181 C183 C184 C200 C201 C202 C205 C206 C207 C209 C210 C21 1 C213 C215 C216 C22 C227 C228 C229 C23 C230 C232 C24 0CC0500K1 15 0CC0500K1 15 0CE335DK618 0CN1020K519 0CE107DF618 0CN1030F6[...]

  • Page 26

    - 26 - LOCA. NO P ART NO DESCRIPTION C520 C521 C522 C523 C559 C563 C564 C565 C568 C601 C604 C605 C606 C612 C621 C622 C650 C651 C663 C666 C667 C668 C670 C671 C672 C673 C674 C675 C676 C677 C678 C679 C681 C685 C686 C687 C688 C689 C690 C802 C803 C804 C806 C807 C808 C809 C813 C814 C815 C816 C818 C820 0CN1020K519 0CN1010K519 0CN1010K519 0CN1010K519 0CQ68[...]

  • Page 27

    - 27 - LOCA. NO P ART NO DESCRIPTION L241 L242 L401 L402 L509 L510 L512 L663 L810 L853 R213 R242 T401 T402 T802 P06A P06B P07A P07B P08A P08B P102 P1 1 1 1 P1 1 12 P1 1 13 P180 P401 P601 P602 P801A P801B P802A P802B P901 P902 P903 P904 P A01B P A02 F851 F853 F854 F855 FR402 FR403 FR406 FR413 J128 0LA0102K1 19 0LA0102K1 19 150-717J 150-L01D 0LA0102K[...]

  • Page 28

    - 28 - LOCA. NO P ART NO DESCRIPTION R186 R187 R188 R189 R190 R191 R192 R193 R201 R202 R205 R206 R207 R208 R209 R210 R21 1 R212 R213 R215 R216 R218 R219 R220 R24 R301 R302 R305 R306 R307 R309 R310 R31 1 R312 R313 R315 R316 R317 R319 R320 R321 R322 R323 R324 R325 R326 R327 R328 R330 R331 R402 R403 0RD4701F609 0RD1801F609 0RD2202F609 0RD5602F609 0RD5[...]

  • Page 29

    R604 R607 R608 R609 R610 R61 1 R624 R629 R662 R663 R664 R801 R802 R803 R804 R805 R806 R807 R808 R809 R81 1 R813 R821 R822 R830 R831 R832 R833 R850 R852 R858 R862 R863 R869 R90 R901 R902 R903 R904 R905 R906 R907 R908 R909 R91 R910 R91 1 R912 R913 R94 R95 SW1 101 SW1 102 SW1 103 SW1 104 SW1 105 SW1 106 SWP801 FB1241 FB202 FB220 FB401 FB801 FB802 FB80[...]

  • Page 30

    SV C. SHEET : 3854V A0098A-S SV C. SHEET :[...]

  • Page 31

    COMPONENT LOCA TION GUIDE C01 ..........B4 C02 ..........B4 C03 ..........B4 C04 ..........B4 C06 ..........E1 C07 ..........B4 C08 ..........B4 C10 ..........B3 C11 ..........B3 C14 ..........B4 C16 ..........B4 C17 ..........B4 C22 ..........B4 C23 ..........C4 C24 ..........C4 C25 ..........C4 C27 ..........B4 C28 ..........C4 C29 ..........B4 C[...]

  • Page 32

    P/NO:3854VA0098A-S(1/2) 2002.03.25[...]

  • Page 33

    COLOR TV SER VICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS : MC-022A MODEL:CT -25/29M60RE/RX MODEL: CT -25/29M60VE/VQ website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html Dec.,2002 Printed in Korea P/NO : 3828VD0118J[...]