LG CT-21M65ME Service Manual Download

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CONTENTS

Contents ...................................................................................................................2

Safety Precautions..............................................................................................3

Control Descriptions..........................................................................................4

Specifications........................................................................................................7

Adjustment Instructions .................................................................................8

Trouble Shooting.................................................................................................12

Printed circuit board.........................................................................................16

Block Diagram ......................................................................................................18

Exploded View....................................................................................................20

Exploded View Parts List ..............................................................................21

Replacement Parts List .................................................................................22

SVC. Sheet..................................................................................................................

Summary of Contents for CT-21M65ME

Page 1: ... TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MC 049B MODEL CT 21M65ME website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ...ety 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: ...perform an AC leakage current check on the exposed metallic parts of the cabinet such as antennas terminals etc to be sure the set is safe to operate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ...

Page 4: ...ndby scans programmes automatically F G Volume Up Down adjusts the volume adjusts menu settings OK accepts your selection or displays the current mode 6 Q VIEW returns to the previously viewed programme 7 TELETEXT BUTTONS option These buttons are used for teletext For further details see the Teletext section 8 PSM Picture Status Memory recalls your preferred picture setting 9 FAVOURITE selects a f...

Page 5: ... and sub picture INPUT selects the input mode for the sub picture SIZE adjusts the sub picture size STILL freezes motion of the sub picture POSITION relocates the sub picture in clockwise direction 9 4 PIP switches on or off the 9 or 4 sub pictures No function COLOURED BUTTONS These buttons are used for teletext only TELETEXT models or programme edit Without TELETEXT PIP POWER MUTE 1 2 3 4 5 6 7 8...

Page 6: ... item switches the set on from standby 6 AUDIO or AUDIO L R VIDEO IN SOCKETS AV2 option Connect the audio video out sockets of external equipment to these sockets 7 HEADPHONE SOCKET option Connect the headphone plug to this socket 8 TURBO SOUND PICTURE option switches Turbo sound or Turbo picture on or off 9 EYE option adjusts picture according to the surrounding conditions 6 7 VIDEO L MONO I AUDI...

Page 7: ...rd input Voltage 110 240V 50 60Hz 4 Measurement must be performed after heat run more than 20min 5 Adjusting Standard for this chassis is followed a special standard No 1 2 3 4 5 6 7 8 Item Receiving System Receiving Channel Input Voltage Market Screen Size Tuning System Operating Environment Storage Environment Remark For EU For Non EU For EU For Non EU NTSC M Multi model Non EU EU FLAT CONVENTIO...

Page 8: ...ve the DY to make equal red on whole screen and it does not to make the DY by fixed screw after check a simple color of Red Green Blue and white raster whether or not it is a pollution of color At this time take care raster of screen and DY must fixing in the condition which maintains a horizontality 6 Check the receiver by move direction When adjustment is not working adjust with the assisted MAG...

Page 9: ...U05CH 2 Deflection setting data adjustment is operate by SVC communicator 3 Enter the deflection adjustment mode by selection SERVICE1 on SERVICE MENU after pressing LINE SVC MODE IN START KEY 4 Use the CH D E key to select adjustment item 5 Use the VOL F G key to increase decrease data Note 1 When adjusting a deflection adjust N50Hz of PAL signal first and adjust a deflection at Normal 60Hz NTSC ...

Page 10: ...S VA VL SC HS 512 511 512 511 512 511 512 511 32 2047 150 12 140 6 100 140 12 140 6 123 Variable range N50Hz PAL FLAT 21 N60Hz NTSC FLAT 21 INCH SYS SOUND CH AU Option Code 0 1 2 3 4 5 6 7 0 1 2 3 0 1 2 3 0 1 Function 21A 21B 21C 29F 25F 28WF 32WF 28N 34F 29N 25N BG I DK BG I DK L BG I DK M BG L RF STEREO AV STEREO MONO MONO DUAL Using Not using Table 4 Initial deflection setting data AV2 DVD SCAR...

Page 11: ...14 15 16 17 0 1 0 100 Function ENG ONLY EU 5EA EU ETC GREECE EU ALL FARSI ARAB URDU E HINDI E I M V E THAI E CHINA WEST EU EAST EU1 TURKEY EU EAST EU2 CYRILLIC1 CYRILLIC2 CYRILLIC3 TURK GRE1 TURK GRE2 TURK GRE3 ARAB FRA ARAB ENG ARAB HEB1 ARAB HEB2 FARS ENG FARS FA FARS ALL AUTO WITHOUT HDEV WITH HDEV SETTING VOL MAX ...

Page 12: ...k The voltage At pin of IC821 IC822 Q807 Check Replace C821 IC822 Q807 Check The Voltage At pin 2 19 20 21 24 of IIC11 Check Replace TU 101 Check Replace F806 D828 D805 OK OK OK OK OK OK NO NO NO NO NO NO No Raster Sound OK 1 2 Check the Heater voltage of CPT 6 6 4Vrm s Check HV Screen Voltage of CPT Check the Heater pulse of FBT T402 Check R G B out of CPT Board Check FBT T402 Check 185V line of ...

Page 13: ...Check T401 each pin voltage Check Replace T402 Check the Voltage Of C803 Check the Voltage Pin 4 OF IC801 Check Replace IC801 IC802 IC826 Check Fuse and Diode of secondary Load of SMPS trans T803 Check Replace IC11 Check Replace IC11 Check Replace Q402 Check Replace T401 Check Replace Q401 Check Replace Fuse Check Replace DB801 Check Replace Fuse IC801 NO OK OK OK NO Open NO 18 20V Normal Yes Yes ...

Page 14: ...p Check 1 8V 3 3V 5V DC Voltage Check SMPS Trans Secondary Voltage Check pin18 Reset Voltage Check IC13 Reset IC Check pin57 58 SCL SDA Check IC12 EEPROM SCL SDA Line RelaceIC11 Q501 Q503 Q504 R G B out of IC11 Check Replace CPT Board com ponent Go to No Sound Picture OK OK OK OK OK NO NO NO NO NO NO 3 3V DC OK OK 3 3V DC Check receiving system in MENU execute Auto Program ...

Page 15: ...age Of pin2 19 20 21 24 of IC11 Check the signal line of SPK L R Check pin 55 m ute of IC11 Check the waveform At pin2 4 of IC601 Check the waveform At pin6 of IC601 Check the waveform At pin8 9 11 12 of IC601 Check thevpltage At pin7 5 of IC601 Check Replace D828 D805 F806 Check the connection of side or Front AV Board P603A Replace IC601 AV OK OK OK OK NO NO OK OK NO NO NO NO Correct the Board N...

Page 16: ... 16 PRINTED CIRCUIT BOARD MAIN ...

Page 17: ... B3 J521 C3 J522 B3 J523 C3 J524 C3 J525 C3 J526 C3 J527 C3 J528 C3 J529 B3 J530 B3 J531 B3 J532 B3 J533 B2 J534 C2 J535 C1 J536 B4 J537 C5 J538 C4 J539 C4 J540 B2 J541 B3 J542 B3 J543 B3 J544 B3 J545 C2 J546 B3 J547 B3 J548 B3 J549 C2 J550 B3 J551 B3 J552 B3 J553 B3 J554 B3 J555 B3 J556 B3 J557 B3 J558 C3 J559 B3 J560 B3 J561 C5 J562 C5 J564 C4 J565 C4 J566 C4 J567 C4 J568 C4 J569 B4 J570 C4 J571...

Page 18: ... AMP IC301 TDA4863A 14V 14V VA H OUT 35V H Vc c TU 33V S Vc c 6 5 V 12V B SAW FILTER Z101 PIP_BOARD SDA9489X S1117 18 IC825 S111 7 33 IC853 KIA78S06P IC824 KA78R33 KA78R05C ST 5V ST 3 3V ST 1 8V 3 3 V GAME HIC HIC01 190 V VB H FLB IIC 33V 5V TV MONITOR OUT SCART RGB IN Y Cb Cr IN AV IN H Vc c 5V S Vc c PIP RGB PIP VIDEO IIC VS H FLB 5V ST 5V ON OFF DATA CLOCK RESET VIDEO AUDIO 190V ...

Page 19: ...MEMO 19 ...

Page 20: ... 20 EXPLODED VIEW 943 400 913 170 150 153 112 174 520 OPTION 300 330 320 310 120 700 ...

Page 21: ...D 310 5020V00439C BUTTON CONTROL CT 21M65ME ABS HF 380 6KEY 117A MC 049B 320 320 062E SPRING KNOB 330 5020V00438C BUTTON POWER CT 21M65ME ABS HF 380 1KEY 117A MC 049B 400 3809V00204J BACK COVER ASSEMBLY CT 21M65ME 1PHONE 407AF 8G068 CKD LGESY 520 6871VMM900M PWB PCB ASSEMBLY MAIN MC049B CT 21M65ME LLLLSRU M 6871VMM911R PWB PCB ASSEMBLY MAIN MC049B CT 21M65ME LDLLSRU M 700 0IGL120104A IC LG SEMICON...

Page 22: ... F Y5V TA52 1000P 50V K B TA52 0 1UF D 50V 80 20 F Y5V TA52 100P 50V K B TA52 100P 50V K B TA52 470P 50V K B TA52 100UF STD 10V M FL TP5 LOCA NO PART NO DESCRIPTION IC11 IC12 IC13 IC301 IC601 IC801 IC802 IC821 IC822 IC824 IC825 IC826 IC853 IC901 Q104 Q11 Q301 Q401 Q402 Q501 Q502 Q503 Q504 Q505 Q507 Q508 Q510 Q601 Q802 Q803 Q808 D301 D403 D405 D405 D406 D406 D407 D501 D502 D503 D504 D601 0IMCRMN031...

Page 23: ...A52 LOCA NO PART NO DESCRIPTION C531 C532 C533 C534 C535 C536 C537 C538 C540 C541 C542 C543 C545 C546 C547 C548 C550 C602 C605 C606 C607 C608 C609 C610 C611 C612 C615 C616 C617 C619 C620 C625 C627 C632 C803 C804 C806 C807 C809 C810 C811 C815 C816 C817 C818 C819 C820 C821 C822 C823 C823 C824 0CX3300K409 0CN1040K949 0CE107DD618 0CN1040K949 0CN1040K949 0CN1040K949 0CN1040K949 0CN1040K949 0CE107DD618 ...

Page 24: ...W 5 00 TA62 100 OHM 1 6 W 5 TA52 75 OHM 1 6 W 5 00 TA52 LOCA NO PART NO DESCRIPTION R102 R109 R11 R110 R111 R112 R113 R12 R124 R125 R126 R127 R13 R14 R15 R16 R17 R18 R19 R20 R212 R24 R25 R26 R28 R29 R30 R302 R303 R304 R305 R306 R307 R308 R309 R31 R310 R312 R313 R314 R315 R32 R328 R33 R35 R37 R38 R403 R404 R405 R409 R410 0RD6801F609 0RD0562F609 0RD1000F609 0RD8200F609 0RD0682F609 0RD1501F609 0RD300...

Page 25: ...2 100 OHM 1 6 W 5 TA52 18K OHM 1 6 W 5 00 TA52 2 2 OHM 1 6 W 5 00 TA52 LOCA NO PART NO DESCRIPTION R615 R616 R617 R620 R621 R664 R802 R803 R804 R805 R806 R807 R808 R809 R810 R814 R816 R817 R818 R823 R827 R828 R838 R858 R903 R904 R905 R906 R907 R908 R909 R910 R911 R912 R914 SW11 SW1111 SW1112 SW1113 SW1114 SW1115 SW1116 SW12 SW13 SW14 SW15 SW16 SW801 0RD1001F609 0RD2700F609 0RD6801F609 0RD1000F609 ...

Page 26: ...M FERRITEAXIAL 62MM 1UH NY 3 5X6 0MM SQE2930 36MH 0 5PHY 105TURN RESONATOR CRYSTAL HC49U 20 250MHZ 30PPM B39361 X6966 D100 EPCOS ST MANUAL OWNERS UKR BZ03 124E TX 340M MANUAL OWNERS VLASER AR20 124E TX 340M REMOTE CONTROLLER MC049B W O TXT ANTENNA 2 POLE 3 SECTION 700MM 750MM PAL FUSE SLOW BLOW 4000MA 250 V 5 2X20 JACK RCA PJ6056F AV 4P CONNECTOR ASSEMBLY 9P 2 5MM 430MM REMOTE CONTROLLER RECEIVER ...

Page 27: ...P NO 3854VA0162A S1 2004 6 12 ...

Page 28: ...SVC SHEET 3854V A0162A S ...

Page 29: ...Aug 2004 Printed in Korea P NO 3828VD0196G ...

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