LG RT-44NA61RB Service Manual
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LG RT-44NA61RB Service Manual

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COLOR TV
SERVICE MANUAL
CHASSIS : MP-03AB
MODEL : RT-44/54NA61RB/RP
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
TV/AV MENU OK
MUTE
VOL
ON/OFF
e-mail:http://www.LGEservice.com/techsup.html
PR
website:http://biz.LGservice.com

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Summary of Contents for LG RT-44NA61RB

  • Page 1 website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html COLOR TV SERVICE MANUAL CHASSIS : MP-03AB MODEL : RT-44/54NA61RB/RP CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. TV/AV MENU OK MUTE ON/OFF...

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ...................... 2 SAFETY PRECAUTIONS .................3 SERVICING PRECAUTIONS ................4 SPECIFICATIONS ................... 6 CONTROL DESCRIPTIONS ................9 ADJUSTMENT INSTRUCTIONS ..............13 TROUBLE SHOOTING ...................26 BLOCK DIAGRAM ..................33 PRINTED CIRCUIT BOARD ................34 EXPLODED VIEW ..................46,48 EXPLODED VIEW PARTS LIST ..............47,49 REPLACEMENT PARTS LIST ............... 50 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: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service transistors and semiconductor "chip" components. The manual and its supplements and addenda, read and follow the following techniques should be used to help reduce the SAFETY PRECAUTIONS on page 3 of this publication. incidence of component damage caused by static by static NOTE: If unforeseen circumstances create conflict between the electricity.
  • Page 5 c. Quickly move the soldering iron tip to the junction of the Fuse and Conventional Resistor component lead and the printed circuit foil, and hold it Removal/Replacement there only until the solder flows onto and around both the 1. Clip each fuse or resistor lead at top of the circuit board component lead and the foil.

  • Page 6: Specifications

    5) Follow each drawing or spec for spec and performance of parts,based upon P/N of RPL 6) Warm up TV set for more than 60min before the measurement. Test and Inspection Method 1) Performance : Follow the Standard of LG TV test 2) Extra requirement Model...
  • Page 7 Test and Inspection Method (S Mark : Option Item) Item Specification Remark Receiving System PAL, SECAM-BG PAL, SECAM-DK, PAL-I PAL, SECAM-BG SECAM-LL’ AV can be input NTSC-M PAL, SECAM-BG, PAL, SECAM-DK, PAL-I NTSC-M Available Channel 1) VHF : E2 ~ E12 2) UHF : E21 ~ E69 3) CATV...
  • Page 8 Feature and Function Item Remark Specification Feature AV Input Side V/L/R S (Rear, RT model) V/L/R S (Rear, RT model) AV Output V/L/R Component Input COMPONENT1, L/R Rear 480i/ 480P/ 576i (1080i for CHINA) COMPONENT2, L/R S-Video Input side 1, Rear 1 S (Rear, RE,RL model) SCART Full SCART (with RGB Input) : 1...

  • Page 9: Control Descriptions

    CONTROLS DESCRIPTION - 9 -...
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  • Page 13: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS These instructions are applied to only MP-03AB chassis. Notes 1.Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect Green Light test instrument. Red/Blue Light 2.Adjustment must be done in the correct order.
  • Page 14 2. Adjustment 1) Test Equipment: Oscilloscope, 100:1 Probe 2) Connect oscilloscope to cathode of R, G, B(R926R/B/G: SCREEN ADJ on the PCB) and GND. 3) Turning Screen Volume (R/G/B) in Focus Pack and adjust R/G/B is 165V!0.5V. 4) After adjustment complete, exit the RASTER adjustment mode using ENTER key and exit the SVC adjustment mode using INSTART key.
  • Page 15 7) PIN-P (Horizontal Trapezoid Distortion Compensation 2) Adjust horizontal size (H-SIZE Adjustment) until third bar to Adjustment) indicate horizontal size of circle is accord with the edge of Adjust to make the length of top horizontal line same with it of the frame.
  • Page 16 3) Receive Crosshatch pattern. 2) Adjust as same as method of Green lens with Red focus (PAL:EU07(PR 8) or NTSC:09CH(PR 13)) control volume of focus pack. * Note: Loosen the butterfly nut in the lens tub slightly,being careful that it is mot loosened to the point that the lens can move out of focus.
  • Page 17 3. Pattern position adjustment 2. Adjustment 1) Change into pattern shift mode. 1) This adjustment must be operated in a dark room or (Press numeric buttons “9” & “4”) equivalent. 2) Make sure to overlap pattern and image. 2) Adjust after Cut-Off and Focus adjustment. (Use MUTE button) 3) The brightness meter must be located in 20¡...
  • Page 18 Check the Option Adjustment 1) Check the OPTION1~5 data of attach 6 is well recorded. 2) The option value of each suffix is started on JOB EXP of 3141VMN chassis Assy. Convergence Adjustment Mode - INSTART -> 3 -> MENU * This Mode is for engineering.
  • Page 19 8.OSD POSITION 2. Sound adjustment data (IC:MSP3411G) 9.AC PATTERN ADJ :Assign location for pattern start Menu Description Range Default <PAL mode> <NTSC mode> FM Prescaler NICAM Prescaler 17,16 8,17 14,30 5,17 10,33 SCART Prescaler 10,15 17,15 3,15 12,31 14,32 S1 VOL SCART 1 Volume 11,14 18,17...
  • Page 20 3.Picture adjustment data(IC:CXA21801) Menu Description Range D-COL Dynamic color mode setting EXTSW Selects the Y/Cb/Cr input or EY/ECb/Ecr SHPFO Sharpness f0 setting BLKBT RGB output bottom limiter level control (for blanking/signal) PREOV Pre-shoot/over-shoot ratio setting CTILE CTI level setting LTILE LTI level setting PLMTL RGB output amplitude level setting...
  • Page 21 4.Picture adjustment data (IC:CXA21802) Menu Description Range R-Y R R-Y axis + (R-Y) component setting R-Y B R-Y axis + (B-Y) component setting G-Y R G-Y axis + (R-Y) component setting G-Y B G-Y axis + (B-Y) component setting UP-BL VBLK position control for top of picture, when VBLK_SW = 1 LO-BL VBLK position control for bottom of picture, when VBLK_SW=1...
  • Page 22 5.CXA2151Q adjustment item Menu Description Range INPUT Selects the four systems of inputs IN1 to IN4 MAT-O Selects the type of matrix conversion VFREQ Selects the frequency of the dummy sync output to SELV_OUT(pin23) SELS1 Selects the type of the signal input to IN1_H/L1(pin36) and IN1_V/L2(pin37) SELS2 Selects the type of the signal input to IN1_H/L1(pin44) and IN1_V/L2(pin45) FIX-S...
  • Page 23 6. OPTION Data Adjustment Option 1 Item Specification Remark 200PR 1 : 200 PROGRAM (CHINA ONLY) 1 : LIST no operation 0 : 100 PROGRAM (OTHER COUNTRIES) 0 : LIST operation TSEAR 1 : WITH TURBO SEARCH 1 : RT/ RE 0 : WITHOUT TURBO SEARCH (FRANCE) 2 ;...
  • Page 24 Option 3 Item Specification Remark 1 : WITH PIP 0 : WITHOUT PIP INDEX 1 : WITH INDEX 0 : WITHOUT INDEX HDEV 1 : HIGH DEVIATION MODULATION (CHINA) 1 : China/ Saudi/ Indo/ Indonesia 0 : RF NORMAL SOUND MODULATION (OTHERS) D - PRO 1 : WITH DOLBY PRO LOGIC 0 : WITHOUT DOLBY PRO LOGIC...
  • Page 25 Option 5 State Language Function LANGUAGE 0:ENG Only English 1:EU 5EA English/German/French/Italy/Spanish 2:EU ETC Pol./Hungary/Czech/Russia/Eng English/ Greece 3:GREECE 4:PARSI English/Parsi (Iran) 5:ARAB URDU English/French/Arab+Urdu T-LAN 6:English+Hindi English/Hindi 7:English+I+M+V English/Indonesian/Malaysian/Vietnamese 8:English+THAI English/Thai 9:English+China English/China English/French/Swedish/Czech/German/Spanish/Italian 0:West Europe 1:East Europe Polish/French/Swedish/Czech/German/Slovenian/Italian/Rumanian 2:Turkey EU English/French/Swedish/Turkish/German/Spanish/Italian 3:EAST EU2 English/Hungarian/Serbian/Czech/German/Polish/Spanish/Italian/...

  • Page 26: Trouble Shooting

    Trouble Shooting - 26 -...
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  • Page 33: Block Diagram

    BLOCK DIAGRAM - 33 -...

  • Page 34: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN1 (TOP) - 34 -...
  • Page 35 MAIN1 (BOTTOM) - 35 -...
  • Page 36 MAIN2 - 36 -...
  • Page 37 COMPONENT LOCATION GUIDE(MAIN2) C401..E2 C830..C5 D488..D2 J421 ..G3 J862 ..C2 Q410 ..G4 R465 ..F2 R897..C2 C403 ..F2 C831..A4 D803..C5 J423 ..G3 J863...B2 Q413..F4 R466 ..G2 R898..B1 C405 ..F5 C832..A4 D804..C4 J425 ..G3 JP1 ....B5 Q416 ..D5 R467..D1 R899..C2 C407..D2 C833..A4 D805..C5 J426 ..G4 JP2 ....A5...
  • Page 38 DIGITAL (TOP) DIGITAL (BOTTOM) - 38 -...
  • Page 39 CONV N-IN (TOP) CONVERGENCE OUT CONV N-IN (BOTTOM) - 39 -...
  • Page 40 MICOM (TOP) MICOM (BOTTOM) - 40 -...
  • Page 41 CPT (R) CPT (G) CPT (R) - 41 -...
  • Page 42 CONTROL LED AC INPUT & REACTOR - 42 -...
  • Page 43 POWER S/W INTERFACE SIDE A/V PRE-AMP - 43 -...
  • Page 44 AUTO CVG SENSOR (TOP/BOTTOM) CONTROL - 44 -...
  • Page 45 MEMO - 45 -...

  • Page 46: Exploded View

    EXPLODED VIEW ( 44Ó ) - 46 -...

  • Page 47: Exploded View Parts List

    BRACKET, ASSY RT-44NA61RP LGEIN CKD MP02AB NON CH-150 G CLENS+COUPLER+CPT 4810V01069G 4810V00944X BRACKET, PRT ASSY RT-44NA61RP LGEIN CKD MP02AB NON CH-150 R CLENS+COUPLER+CPT 120-D38E 120-D38E SPEAKER, MID-RANGE LG FOSTER 8 OHM 15/25W 87DB 128X77MM 120-237C 120-237C SPEAKER, FULLRANGE C060T01K145A ESTEC 8 15/20 88 . 60X60 FULLRANGE 6150V-1026A 6150V-1026A DY(DEFLECTION YOKE), 6150Z-1100L 07 LPDBJ 38KHZ 2.5H DEFLECTION YOKE MP-03AA...
  • Page 48 EXPLODED VIEW ( 54Ó ) - 48 -...
  • Page 49 109 4810V00780A 4810V01069K BRACKET, PRT ASSY MP-03AB R CLENS+COUPLER+CPT 4810V01069U 4810V00851X 120 6400VA0015A 6400VA0015A 6400VA0015A SPEAKER, GENERAL C151PX-373K14 LG C&D 8 OHM 15W/25W 86DB 154X104MM 6400VA0015A 120-237C 120-237C 120-237C 120-237C SPEAKER, FULLRANGE, C060T01K145A ESTEC 8 15/20 88 . 60X60 FULLRANGE 6150V-1026A...

  • Page 50: Replacement Parts List

    SD16 0IPRPTD001A BCS5030G1 TDK 2P SMD SENSOR IC264 0IMCRFA012A DM74LS157MX FAIRCHILD 16P SOIC TRANSISTOR IC265 0ICTMLG010A LGDT1000B LG IC QFP 128P IC266 0IMCRSO008A CXA2151Q SONY 48P QFP IC11 0TR830009BA BSS83 TP PHILIPS NON N-CHANNEL S/W TR 0ISA392120A IC2701 STK392-120 18P,SIP...
  • Page 51 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION IC18 0TR830009BA BSS83 TP PHILIPS NON N-CHANNEL S/W TR Q264 0TR150400BA CHIP 2SA1504S(ASY) KEC BSS83 TP PHILIPS NON N-CHANNEL S/W TR CHIP 2SA1504S(ASY) KEC IC19 0TR830009BA Q265 0TR150400BA 0TR830009BA BSS83 TP PHILIPS NON N-CHANNEL S/W TR 0TR387500AA CHIP 2SC3875S(ALY) KEC IC20...
  • Page 52 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q601 0TR387500AA CHIP 2SC3875S(ALY) KEC DIODE CHIP 2SC3875S(ALY) KEC Q602 0TR387500AA 0TR387500AA CHIP 2SC3875S(ALY) KEC 0DS113379BA 1SS133 T-72 TP ROHM KOREA DO34 90V Q603 D2701 Q606 0TR150400BA CHIP 2SA1504S(ASY) KEC D2702 0DR210009AC BAV21 TP PHILIPS DO35 200V 0.2A 1A 50SEC 100A...
  • Page 53 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 54 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 55 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 56 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 57 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 58 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 59 2.5MM 3P GIL-G LG CABLE . L702 150-C02F 82UH PHY TURN P03P 366-921B 150-C02F 366-922B 2.5MM 3P GIL-G LG CABLE R/A (B TO C) L703 82UH PHY TURN L704 150-C02F 82UH PHY TURN P07B 366-921D 2.5MM 5P GIL-G LG CABLE .
  • Page 60 2.5MM 4P GIL-G LG CABLE S (STICK) P42B 366-009D 2.36PAI 1P . K/M AUTO PT01 366-922G 2.5MM 8P GIL-G LG CABLE R/A (B TO C) 2.36PAI 1P . K/M AUTO 2.5MM 7P GIL-G LG CABLE R/A (B TO C) P42C 366-009D PT02...
  • Page 61 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 62 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 63 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 64 140-289A POWER SDDF3PASP013 LG C&D UL/C R923B 0RCZVTA002E 4.7K OHM 1/2 W 10% TA52 . SWT1 140-313B TACT 2LEAD 160G(TA) LG C&D NON 0RCZVTA002E 4.7K OHM 1/2 W 10% TA52 . R923G SWT2 140-313B TACT 2LEAD 160G(TA) LG C&D NON...
  • Page 65 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION SWT5 140-313B TACT 2LEAD 160G(TA) LG C&D NON L1206 125-022K FERRITE 1UH TAPING TACT 2LEAD 160G(TA) LG C&D NON ACB2012M-300-T TDK , CHIP BEAD,LCD SWT6 140-313B L2007 6210TCT002B 140-313B TACT 2LEAD 160G(TA) LG C&D NON...
  • Page 66 SK901G 381-226L SOCKET (CIRC),CPT PCS628-03L(W/BAND)100K OHM SK901R 381-226L SOCKET (CIRC),CPT PCS628-03L(W/BAND)100K OHM TU100 6700MF0001C TUNER, TAUD-Z240D LG MULTI FS 4SYS,2IN1,MAIN TU101 6700MF0001D TUNER, TAFD-Z241P LG MULTI FS 4SYS,2 IN 1,SUB VA800 164-003D VARISTOR, SVC561D-14A ILJIN 560V 10% - 66 -...
  • Page 67 P/NO: 3854VA0124A - S1(1/2) 2004.10.05...
  • Page 68 P/NO: 3854VA0124A - S1(2/2) 2004.10.05...

  • Page 69: Svc. Sheet

    SVC. SHEET : 3854V A0124A-S1...
  • Page 70 Jul., 2005 P/NO : 3828VD0133Y Printed in Korea...

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