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LG RT-29FC90RB Service Manual

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COLOR TV

SERVICE MANUAL

CHASSIS : MC-035B
MODEL:RT-29FC90RB/RP
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
PR
VOL
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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  Summary of Contents for LG RT-29FC90RB

  • Page 1: Service Manual

    COLOR TV SERVICE MANUAL CHASSIS : MC-035B MODEL:RT-29FC90RB/RP CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 SAFETY PRECAUTIONS ................3 SPECIFICATIONS ..................4 CONTROL DESCRIPTIONS ..............5 ADJUSTMENT INSTRUCTIONS ............. 8 TROUBLE SHOOTING ................15 PRINTED CIRCUIT BOARD ..............20 BLOCK DIAGRAM ................. 27 EXPLODED VIEW .................. 30 EXPLODED VIEW PARTS LIST ..............31 REPLACEMENT PARTS LIST ............... 32 SVC.
  • 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

    Feature and Function Item Specification Item Specification Teletext TOP,FLOF 2000 page(option) Receiving Broadcasting PAL/SECAM-B/G, D/K REMOCON LG code Method PAL I/I,SECAM L/LÕ(option) AV input 4(Side or Front:1 Rear:3) NTSC M(option) Component input 2(Rear:option) AV Receiving System NTSC M/PB,PAL BG,DK,I PERI TV connector...
  • Page 5: Control Descriptions

    2. PSM(Picture Status Memory) recalls your preferred picture setting. 3.ARC(Aspect ratio Control) changes the picture format. 4.VCR BUTTONS control a LG video cassette recorder. 5.DVD BUTTONS. control a LG DVD. 6.PIP BUTTONS(option) switches the sub picture on or off. PR +/- selects a programme for the sub picture.
  • Page 6 13.MAIN STILL freezes motion of the picture. 14. I/II selects the language during dual language broadcast. selects the sound output(option). 15.SLEEP sets the sleep timer. 16.EYE/*(option) switches the eye function on or off. 17.TELETEXT BUTTONS(option) These buttons are used for teletext. For further details, see the ÔTeletextÕ...
  • Page 7: Front Panel

    Front panel RT-29FC90 series MENU ON/OFF Side panel 1. MAIN POWER (ON/OFF) 8. HEADPHONE SOCKET switches the set on or off. Connect the headphone plug to this socket. 2. OK 9. AUDIO/VIDEO IN SOCKETS (AV4) accepts your selection or displays the current Connect the audio/video out sockets of exter- mode.
  • Page 8: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1.Safety Precautions 4. Purity & convergence Adjustment 4-1. Preparation for Adjustment 1. It is safe to adjust after using insulating transformer between the power supply line and chassis input to prevent the risk of Adjustment should be operated when using the CPT(without electric shock and protect the instrument.
  • Page 9: Screen Voltage Adjustment

    6) The TV set receives PAL-B/G Digital pattern. at the showing place. NOTE : If production line doesnÕt the production line of LG 6. White balance Adjustment TV,receive available deflection adjustment pattern.
  • Page 10 NTSC 480P 1080I Menu Range 100HZ 60HZ 0 ~ 3F 0 ~ 3F 0 ~ 3F 0 ~ 3F 0 ~ 3F 0 ~ 3F A-ANG 0 ~ 3F Fig. 2 <50HZ> A-BOW 0 ~ 3F 0 ~ 3F 0 ~ 3F U-VL 0 ~ 0F L-VL...
  • Page 11 8-2. Adjustment Method Table 3. OPTION 3 Function Option Code Function Remark 1) Input data directly by the buttons corresponded with 4 : 3 TV OPTION1 ??(0~255), OPTION2 ??(0~255), OPTION3 WIDE 16 : 9 TV ???(0~250). 2) Option4???(0~116) controls correspondinglines directly Without D/K CHINA or BB sys.
  • Page 12 Table 4. OPTION 4 Funtion CODE Language Funciton OPTION LANG E Only English+EU 5 English+Other EU FARSI ARAB URDU E + HINDI E + I + M + V E + THAI E + CHINA West Europe T LAN East Europe Turkey EU1 EAST EU2 Cyrillic 1...
  • Page 13 Table 5. SERVICE MODE BASIC DATA ITEM ITEM RZ-29FC40RB REMARK ITEM ITEM RZ-29FC40RB REMARK 2150 D-COL Dynamic Color 2150 VM-DL VM phase ctrl GAMMA GAMMA-L BLK-0 Blanking on/off COLAX Color Axis AKBOF AKB ON/OFF CTILE CTI LEVEL VSAWO VSAWO Waveform LTILE LTI LEVEL UP-UP...
  • Page 14 - 14 -...
  • Page 15: Trouble Shooting

    TROUBLE SHOOTING Check pin 2 of P004A. Check / Replace Check the voltage at Q871,Q852,Q854, pin 10 of P004A. IC803,IC851 2Vp-p Check the H-DRV voltage at pin 5 of P214A. Check / Replace Check / Replace IC001,Q002. FR359,FR360,D339,D349,IC301. 5.5Vp-p Check / Replace Check the voltage of C404(+).
  • Page 16 Check if heater element is lighting. Check the heater voltage. Increase the screen Check/Replace voltage of FBT. FR442,R910. Check/Replace Screen is black. Retrace line is CPT. visible. Check the waveform Check FBT & CPT socket at pin 3 of ic901,902,903 &...
  • Page 17 Check the voltage at pin1,15 of IC650(SOUND AMP). D850,F851. Check the waveform at PIN 8,13 of IC 650. 2.5V CHECK/REPLACE CHECK/REPLACE Q601,Q602,L601. IC650. CHECK/REPLACE TU101. Check the waveform at pin 11 of P901B. NORMAL Checkthe waveform at pin10 of HIC951. Q501,IC501S.
  • Page 18 Check the waveform at pin 21,22 of IC601. Check / Replace Check the waveform at IC601. pin 1,3 of IC602. Check / Replace Check / Replace H/P JACK. IC603. DON'T CATCH CHANNEL(MAIN) Check the voltage at pin9 of TU101. Check/Replace Check the voltage at R403,FB854,D861,ZD102.
  • Page 19 Check the waveform at pin 12 of IC001. Check /Replace Check the waveform at IC201S,Q206. pin121 of IC101. Check /Replace Check the waveform at Q301. pin111,112,113 of IC101. Check /Replace Check /Replace IC101. IC501S. Check the voltage at pin 1,6 of IC301. Check / Replace Check the waveform FR359,FR360,D339,D349.
  • Page 20: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN - 20 -...
  • Page 21 COMPONENT LOCATION GUIDE(MAIN) C101..A2 C402 ..D4 C637..B4 D349..F4 G38..F3 G104 ..C2 Q404 ..D4 R217 ..C5 R624 ..C4 TP1..A4 C102..A2 C403 ..G3 C638..B4 D402 ..G3 G39..F3 G105 ..C2 Q601 ..B4 R219 ..C5 R625..A3 TP2..A4 C103..A2 C404 ..G3 C639..B4 D403 ..D5 G40..F3 G106 ..G3 Q602 ..B4 R311 ..D4...
  • Page 22 100Hz(TOP) 100Hz(BOTTOM) - 22 -...
  • Page 23 MICOM(TOP) MICOM(BOTTOM) - 23 -...
  • Page 24 SIDE A/V CONTROL - 24 -...
  • Page 25 SOUND POWER - 25 -...
  • Page 26: Block Diagram

    BLOCK DIAGRAM 1. MAIN - 26 -...
  • Page 27 2.100HZ/PROGRESSIVE - 27 -...
  • Page 28 3.MICOM - 28 -...
  • Page 29 MEMO - 29 -...
  • Page 30: Exploded View

    EXPLODED VIEW - 30 -...
  • Page 31: Exploded View Parts List

    6341V29004C BARE CPT ASSEMBLY, 2426GF239AR 6150V-5006E 6334V29012A CPT, A68QCU270X 00QLGD LG-PHILIPS DISPLAYS 107KHZ 6335V29017F CPT ASSEMBLY, A68QCU259X VEQ7ND 0G 0G LG PHILIPS NON 120-C77N SPEAKER,FULLRANGE C122S01K1450 ESTEC MID-RANGE 8OHM 15/25W 84.5DB OTHERS 120-C76G SPEAKER,TWEETER C050TX-357K14 FOSTER 8OHM 15/25W 88DB OTHERS 6400VA0015C SPEAKER,FULLRANGE C151P01K1451 ESTEC WOOFER 8OHM 15/25W 87.5DB OTHERS...
  • Page 32: Replacement Parts List

    S5225M AUK 5SOP, SOT-25 R/TP 150MA 0TR150400BA CHIP 2SA1504S(ASY) KEC Q171 IC101S 0IMCRMN016B VSP9427B-XZ-C3 144P DIGITAL RGB/YUV Q172 0TR150400BA CHIP 2SA1504S(ASY) KEC 0ICTMLG010A LGDT1000B LG IC QFP 128P IC102S Q173 0TR150400BA CHIP 2SA1504S(ASY) KEC IC106S 0ISA721700C LA7217M MFP14 CHIP 2SA1504S(ASY) KEC Q174 0TR150400BA...
  • Page 33 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 34 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 35 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 36 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 37 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 38 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 39 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 40 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION SW05 140-313B SWITCH,TACT 2LEAD 160G(TA) TU102 6700MF0001D TUNER,TAFD-Z241P SWITCH,TACT 2LEAD 160G(TA) SW06 140-313B ZN1101 164-003K VARISTOR,SVC621D-14A ILJIN 620V 0% 6600VM2002A SWITCH,PUSH SDKEA3 250V SW1101 ACCESSORIES FILTER & CRYSTAL 3828VA0499F MANUAL,OWNERS MC035B FB204 125-022K FILTER,EMC 62MM 1UH...
  • Page 41 P/N: 3854VA0123A-S1(1/2) DATE: 2003.07.17...
  • Page 42 P/N: 3854VA0123A-S1(2/2) DATE: 2003.07.17...
  • Page 43: Svc. Sheet

    SVC. SHEET : 3854V A0123A-S1 SVC. SHEET SVC. SHEET...
  • Page 44 Jan.,2005 P/NO : 3828VD0155H Printed in Korea...

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