LG RT-29CC25VX Service Manual Download Page 1

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COLOR TV
SERVICE MANUAL

Aug., 2005

P/NO : 3828VD0194R

ON/OFF

VOL

CHASSIS : MC049A

MODEL : RT-29CC25VX

CAUTION

BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

Summary of Contents for RT-29CC25VX

Page 1: ...COLOR TV SERVICE MANUAL Aug 2005 P NO 3828VD0194R ON OFF VOL MENU OK PR CHASSIS MC049A MODEL RT 29CC25VX CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL ...

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: ...assette recorder 7 SSM Sound Status Memory recalls your preferred sound setting 8 I II option selects the language during dual language broadcast option selects the sound output 9 PSM Picture Status Memory recalls your preferred picture setting 10 TELETEXT BUTTONS option These buttons are used for teletext For further details see the Teletext section 11 MUTE switches the sound on or off 12 TV AV s...

Page 5: ... picture on or off PR selects a programme for the sub picture SWAP alternates between main 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 programme scan mode through 4 or 9 sub pictures COLOURED BUTTONS These buttons ar...

Page 6: ...ccording to the surround ing conditions 12 HEADPHONE SOCKET option Connect the headphone plug to this sock et 13 AUDIO VIDEO IN SOCKETS AV3 Connect the audio video out sockets of external equipment to these sockets S VIDEO AUDIO IN SOCKETS S AV option Connect the video out socket of an S VIDEO VCR to the S VIDEO socket Connect the audio out sockets of the S VIDEO VCR to the audio sockets as in AV3...

Page 7: ... based upon P N of B O M 5 Warm up TV set for more than 20min before the measurement Standard input Voltage 110 240V 50 60Hz 230V 50 60Hz Market Middle East Africa EU Chassis MC049A Brand LG No 1 2 3 4 5 6 7 8 Item Receiving System Available Channel Input Voltage Market Screen Size Tuning System Operating Environment Storage Environment Remark For EU For Non EU OPTION Non EU EU 200 PR W O TXT Spec...

Page 8: ...by crossing adjustment At this time 4 6 pole magnet is located to magnet of nothing 5 Move 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 th...

Page 9: ...y SVC communicator 3 Enter the deflection mode by selection SERVICE1 key on SERVICE MENU after enter the adjustment mode by pressing LINE SVC MODE IN START KEY 4 Enter the deflection mode by pressing ADJUST key 5 Use the CH D E key to select adjustment item 6 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...

Page 10: ...screen to the best straight line 13 PIP PIP Position Adjust until the distance between PIP and main picture becomes about 1 2mm by using VOL key 8 OPTION Adjustment 8 1 Preparation for Adjustment 1 This option adjustment decides function in accordance with model Press the SVC TX adjustment button IN START button at SVC mode then adjust the option at OPTION1 mode 2 Mark the option adjustment data l...

Page 11: ...unction Without TURBO SEARCH With TURBO SEARCH 100 PROGRAM SAVE 200 PROGRAM SAVE Without EYE With EYE 8KEY 4KEY SYSTEM ACMS TOP CH AU HDEV Option Code 0 1 0 1 0 1 0 1 0 1 Function REMARK Without ACMS Function With ACMS Function FLOT TXT TOP TXT Without D K CHINA or BB SYSTEM With D K CHINA or BB SYSTEM China Australia ...

Page 12: ... NO NO Check The Voltage At pin 2 19 20 21 24 of IIC11 Check Replace Q601 Check Replace F806 D828 D805 Check Replace C821 IC822 Q807 Check The voltage At pin of IC821 IC822 Q807 NO OK OK OK OK OK OK NO No Raster Sound OK Check the Heater voltage of CPT 6 6 5Vrms Check HV Screen Voltage of CPT Check R G B out of CPT Board Check the Heater pulse of FBT T402 Check 200V line of CPT Board if no problem...

Page 13: ...H Out Check Q402 Collector waveform Check T401 each pin voltage Check Q401 Collector waveform Check the In out of regulator Check Fuse and Rectifition Diode of secondary Load of SMPS trans T803 Check Replace IC11 Check Replace IC11 Check Replace Q402 Check Replace T401 Normal Abnormal Ok 140 310V Open No No No No No Yes Yes Yes Yes IC821 IC822 IC823 IC824 IC825 Ok 18 20V Ok Check Replace Fuse IC80...

Page 14: ...e CPT Board component Go to No Sound Picture OK Check IC11 pin71 72 73 R G B out No No OK OK OK OK Check pin40 V out 1 1V p p Check 1 8V 3 3V 5V DC Voltage No Check SMPS Trans Secondary Voltage Q501 Q503 Q504 R G B out of IC11 No No Check pin18 Reset Voltage OK Check IC13 Reset IC No Check pin57 58 SCL SDA OK Check IC12 EEPROM SCL SDA Line No Relace IC11 OK 3 3V swing 3 3V DC ...

Page 15: ...n 2 4 of IC601 Check the voltage At pin6 of IC601 Check the waveform At pin 8 9 11 12 of IC601 Check the voltage Of pin2 19 20 21 24 of IC11 Check the signal line of SPK L R Check pin 55 mute of IC11 Check the vpltage At pin7 5 of IC601 Check Replace D828 D805 F806 OK AV OK OK OK OK OK OK NO NO NO NO NO NO OK Check the connection of side or Front AV Board NO Connect the Board OK Replace IC601 P603...

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

Page 17: ...SIDE A V 17 ...

Page 18: ...9489X PIP Processor LA7222 Aud io Swit c h EYE Op t Tilt Op t STK396 110 VM IC SMPS TRANS ST 5V 12V PIP AV SW OPT 3 3V 5V Tuner Sub Relay VM 200 V FBT LA 7845 V AMP 14V FBT EW AMP 28 V FBT T802 IC11 LA42152 So und AMP IC601 LA42152 So und AMP IC601 ICP01 IC602 IC901 HIC920 ST 1 8V ST 3 3V 3 3V 8V ST 1 8V ST 3 3V 5V 9V 14V 17V 5V 14V 14V IC824 IC853 IC825 IC821 IC822 ICP02 11 ...

Page 19: ... C3 R Pr Y3 G Y B Pb V1 V2 V3 C3 R Pr Y3 G Y B Pb AIN1 L R AIN2 L R AIN3 L R AUDIO VIDEO LA7222 HOR EW VER TDA4863 EHT VCTi 49xxl P N SVCC 110V 12V 5V 3 3V 1 8V BIN BIN PIP Va Vb RGB o ut SVM o ut Hf b Hout Menu OK VOL VOL PR PR KEY IR AUDIO VIDEO GAME MODULE HS VS IFIN IFIN MAIN SUB MAIN SUB 3 T PIP VIDEO RIN GIN PIP VIDEO RIN GIN AOU 1 1 2 VOUT ...

Page 20: ... 20 EXPLODED VIEW 300 320 330 600 120 310 P801 520 943 400 112 913 170 150 ...

Page 21: ...9CC25V ABS HF 380 6KEY 7227S00117A 320 320 062E SPRING KNOB 330 5020V00845B BUTTON POWER RF 29CC25V ABS HF 380 1KEY 7227S00117A 400 3809V00390H BACK COVER ASSEMBLY RT 29CC25V 2PHONE KUMI AK C SKD 8G068 520 6871VMMZW8K PWB PCB ASSEMBLY MAIN M I MC049A RT 29CC25VX NFELEDK SY E N I E 600 68719SM169A PWB PCB ASSEMBLY SUB M I MC049A 29CC20 SIDE AV SY E N I E 7 913 332 229G SCREW DRAWING HEXAGON D22 L40...

Page 22: ...27UF D 100V 5 PE TP5 10000PF D 16V 20 X5R TA52 10000PF D 16V 20 X5R TA52 10000PF D 16V 20 X5R TA52 10000PF D 16V 20 X5R TA52 10000PF D 16V 20 X5R TA52 22PF D 50V 5 NP0 TR 10000PF D 16V 20 X5R TA52 220UF STD 10V M FL TP5 LOCA NO PART NO DESCRIPTION IC11 IC12 IC13 IC301 IC302 IC601 IC602 IC801 IC802 IC821 IC822 IC824 IC825 IC826 IC853 IC901 Q104 Q11 Q301 Q303 Q401 Q401 Q402 Q501 Q502 Q503 Q504 Q505 ...

Page 23: ...14 C515 C516 C517 C518 C519 C520 C521 C522 C524 C526 C530 C532 C533 C534 C535 C536 C537 C538 C539 C540 C541 C542 C543 C545 C547 C548 C549 C602 C603 C604 C605 C606 C607 C608 C609 C610 C611 C612 C613 C614 C615 C616 C617 C618 C619 C620 C623 C624 C625 C626 0CN1040K949 0CE107DD618 0CN1040K949 0CN1040K949 0CN1040K949 0CN1040K949 0CN1010K519 0CE107DD618 0CN1040K949 0CN1040K949 0CE107DD618 0CN1040K949 0CN...

Page 24: ... L503 L504 L505 L506 L507 L508 L509 L801 T401 T803 C1 C2 C3 C4 P101 P102 P201A P201B P403B P601 P602 P603A P603B P901 P903 P903A P903B F802 F804 F805 F806 FR402 FR403 FR404 FR405 FR901 0LA0472K119 0LA0101K119 0LA0102K119 0LA0102K119 0LA0102K119 0LA0102K119 0LA0102K119 0LA0102K119 150 717J 150 L01D 0LA0101K119 0LA0101K119 0LA0101K119 0LA0101K119 0LA0101K119 0LA0101K119 0LA0101K119 0LA0101K119 0LA01...

Page 25: ... NO PART NO DESCRIPTION R307 R308 R309 R31 R310 R312 R313 R314 R315 R316 R317 R318 R319 R32 R320 R321 R322 R323 R324 R325 R326 R328 R33 R35 R37 R38 R401 R403 R404 R405 R408 R409 R410 R411 R412 R413 R414 R415 R416 R417 R42 R421 R422 R449 R501 R502 R503 R504 R505 R506 R507 R508 0RD3601F609 0RD3902F609 0RD2001F609 0RD3301F609 0RD4702F609 0RD4701F609 0RN0471H509 0RN0471H509 0RS2700K607 0RD1000F609 0RD...

Page 26: ...OHM 1 6 W 5 TA52 1K OHM 1 6 W 5 TA52 1K OHM 1 6 W 5 TA52 LOCA NO PART NO DESCRIPTION R623 R624 R631 R632 R633 R635 R664 R802 R803 R804 R805 R806 R807 R808 R809 R810 R814 R816 R817 R823 R824 R825 R827 R828 R838 R901 R902 R903 R906 R907 R908 R909 R910 R911 R912 R925 SW11 SW12 SW13 SW14 SW15 SW16 SW801 SG901 SG902 SG903 SG904 0RD1001F609 0RD1001F609 0RD1001F609 0RD1001F609 0RD4701F609 0RD4702F609 0RD...

Page 27: ...6 0MM FERRITE AXIAL 62MM 1UH NY 3 5X6 0MM FERRITE AXIAL 62MM 1UH NY 3 5X6 0MM FERRITE AXIAL 62MM 1UH NY 3 5X6 0MM FERRITE BFD3565R2F TAPING SQE3535 27 5MH 0 6PHY 70TURN RESONATOR CRYSTAL HC49U 20 250MHZ B39361 X6966 D100 EPCOS ST PMJ014B E P ST W O S VHS A V3P UPJ R1 027 UGCOM CH1 PPJ109 18 A V IN OUT 6P STEREO WAFER PLUG 4P WAFER ASSY PLUG 2P WAFER ASSY PLUG 2P REMOTE CONTROLLERW TXT W O PIP FUSE...

Page 28: ...P NO 3854VA0146A S1 2004 4 16 ...

Page 29: ...SVC SHEET 3854V A0146A S ...

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