LG RT-44NZ23RB Service Manual
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LG RT-44NZ23RB Service Manual

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P/NO : 3828VD0133S
Sep, 2003
Printed in Korea
e-mail:http://www.LGEservice.com/techsup.html
COLOR TV
SERVICE MANUAL
CHASSIS : MP-03AB
MODEL : RT-44/49/56NZ23RB/RP
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
TV/AV
MENU
OK
VOL
PR
website:http://biz.LGservice.com

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  • Page 1 website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html COLOR TV SERVICE MANUAL CHASSIS : MP-03AB MODEL : RT-44/49/56NZ23RB/RP CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. TV/AV MENU Sep, 2003 P/NO : 3828VD0133S Printed in Korea...

  • 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 EXPLODED VIEW PARTS LIST ..............47 REPLACEMENT PARTS LIST ............... 48 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 semicounductor "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. Qulckly 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 Recieving 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

    10. I/II selects the language during dual language broadcast. selects the sound output (option). 11. VCR BUTTONS POSITION SCAN STILL control a LG video cassette recorder. SIZE SLEEP L IST I/II Q.VIEW (Without TELETEXT/With PIP) - 9 -...
  • Page 10 12. MULTIMEDIA POWER selects modes. Component 1 or Component 2 TV/AV MULTIMEDIA 13. TURBO PICTURE BUTTON TURBO selects Turbo picture. SOUND PICTURE 14. TELETEXT BUTTONS (option) These buttons are used for teletext. For further details, see the ‘Teletext’ section. 15. SWAP MENU MUTE returns to the previously viewed programme.
  • Page 11 Front panel • • RT-44/49/54NA13/14 series RT-44/49/54NA23/24 series MUTE MENU TV/AV MUTE MENU TV/AV TV/AV MENU MUTE ON/OFF ON/OFF ON/OFF • RT-62NA33 series TV/AV MENU MUTE • RT-44/49/54NA43/44 series TV/AV MENU INDEX STAND BY POWER ON MUTE MENU TV/AV TV/AV MENU INDEX STAND BY POWER ON...
  • Page 12 Front panel • RT-44/49/54A85 series DIGITAL INDEX PRO LOGIC LOGIC MOVIE SPOR MOVIE SPORTS MUSIC TS MUSIC MENU CATV TV/AV DIGITAL INDEX MOVIE SPOR MOVIE SPORTS MUSIC TS MUSIC PRO LOGIC LOGIC MENU CATV TV/AV ON/OFF ON/OFF • RT-39NZ43 series TV/AV MENU INDEX...

  • 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 2 Pole Magnet 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. 4 Pole Magnet 3) Turning Screen Volume (R/G/B) in Focus Pack and adjust R/G/B is 165V!0.5V.
  • 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 ake the length of top horizontal line same with it of the 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 setiing...
  • 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 CONTRIES) 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 LANGUEGE 0:ENG Only English 1:EU 5EA English/German/French/Italy/Spanish 2:EU ETC Pol./Hungary/Czecho/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 Q110 Main IC700 #53 Main Q701 IC700 IC262 IC262 #97 ? IC262 #54 ~ #115 IC262 #54 ~ #115 ? IC265 IC265 #38,41,46 ? IC501 #30, 32, 34 ? - 26 -...
  • Page 27 Component1,2 IC600 TU100 Q114 Main1 ICX600 ICX600 ICX600 IC600 ICX600 #8 #13? Q608, 609 ICX600 #1 #3 ? ICX600 - 27 -...
  • Page 28 Digital Main1 IC262 IC700 #1, 8, 15, 22 ? Q100(E) ? #67, 70, 72, 73 ? Main1 Main1 IC700 IC700 JK600 Digital around P260 IC262 #96 Check Digital Board IC262 - 28 -...
  • Page 29 Digital Board P261 #15 ? Digital Board Q07, 08 Digital Board IC501 #36, 37, 38, 39 - 29 -...
  • Page 30 Check IC01 #41 Check P107/108 #9, 10 (Control Assy) - 30 -...
  • Page 31 1, 77, 107 IC262 3.3V ? IC501 of C81D, C82F IC501 D881 D803, 804 IC832,833 - 31 -...
  • Page 32 at P101 #8, 9 IC2000 at #7,8,9,10 at #27,28 of IC2000 SPA2, SCL2 Pin 27, 28 of IC2000 - 32 -...

  • 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 AC INPUT & REACTOR CONTROL LED - 42 -...
  • Page 43 POWER S/W SIDE A/V INTERFACE PRE-AMP CONTROL - 43 -...
  • Page 44 AUTO CVG SENSOR (TOP) AUTO CVG SENSOR (BOTTOM) - 44 -...
  • Page 45 MEMO - 45 -...

  • Page 46: Exploded View

    EXPLODED VIEW(RT-44/49NZ23RB) - 46 -...

  • Page 47: Exploded View Parts List

    PWB(PCB) ASSEMBLY,SUB CVG MP03AB CONV-OUT M/I (PAL 2MODE) 6871VSMV80A PWB(PCB) ASSEMBLY,SUB DIGITAL MP03AB M/I PAL (W/O PC, W/ 1080I-ADJ) RE-44NA14T 6871VSMY12D PWB(PCB) ASSEMBLY,SUB MP03AB M/I MICOM(PAL) W/ TXT, A/C ATL(AUSTRALIA) RT-44NZ23RB 6871VSMC17A PWB(PCB) ASSEMBLY,SUB CVG MP03AB D-CON M/I 6871VPMA25A PWB(PCB) ASSEMBLY,POWER SUB MP-03AA AC-INPUT M/I KOREA...
  • Page 48 EXPLODED VIEW(RT-56NZ23RB) - 48 -...
  • Page 49 BRACKET, PRT ASSY RP-45NZ60P MP03AA NON SSM-100 G CLENS+COUPLER+CPT 4810V00780C BRACKET, PRT ASSY RN-44NZ35,60H, 49NZ25H MP03AA NON SSM-100 B CLENS+COUPLER+CPT 6400VA0015A SPEAKER, GENERAL C151PX-373K14 LG C&D 8 OHM 15W/25W 86DB 154X104MM 120-237C SPEAKER,FULLRANGE C060T01K145A ESTEC 8 15/20 88 . 60X60 FULLRANGE 6150Z-1100E DY(DEFLECTION YOKE), 2.5H 38KHZ L 400MM 07”...

  • Page 50: Replacement Parts List

    IC, 80PIN TQFP TRAY CONVERGENCE IC 0IPH611190A IC, TDA6111Q 9SIP RGB AMP IC901R IC265 0ICTMLG010A IC, LGDT1000B LG IC QFP 128P TRAY DRP2 IC05 0IPMGSG017A IC, 3P DPAK R/TP REGULATOR 2.5V 0.8A 0IZZVF0018C IC901 IC, 11P ST SCAN VELOCITY MODU. HDTV (BW 10M)
  • Page 51 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q115 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC Q708 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC TR, CHIP 2SC3875S(ALY) KEC TR, CHIP 2SC3875S(ALY) KEC Q116 0TR387500AA Q709 0TR387500AA 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC Q117 Q710...
  • Page 52 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q270 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC DIODE Q2700 0TR319809AA TR, KTC3198(KTC1815) KEC TP TO92 50V 150MA 0TR319809AA 0DL100000AE LED, SA5711(DL-1LO) BK AMBER - Q2701 TR, KTC3198(KTC1815) KEC TP TO92 50V 150MA LDT1 Q2702 0TR319809AA...
  • 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 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L121 0LC1032101A INDUCTOR,CHIP 10UH 10% 3216 R/TC FI-C3216-103KJT T801 6170VMCC01F TRANSFORMER,SMPS[COIL]EER5345 220UUH MP03AA L122 0LC1032101A INDUCTOR,CHIP 10UH 10% 3216 R/TC FI-C3216-103KJT T805 6170VS0004B TRANSFORMER,STAND-BYEE2229 2200UUH MP03AA 0LC1032101A L123 INDUCTOR,CHIP 10UH 10% 3216 R/TC FI-C3216-103KJT CONNECTOR L261 0LA0102K119...
  • Page 60 P420 366-173N SP04 6630N600132 CONNECTOR (CIRC),WAFER AEPH254-D28R(14*2) CONNECTOR(CIRC),HOUSING 32P 2.54MM FEMALE B-B P421 366-921B CONNECTOR (CIRC),WAFER 2.5MM 3P GIL-G LG CABLE SP05 6630N600132 CONNECTOR (CIRC),HOUSING 32P 2.54MM FEMALE B-B P42A 366-921D CONNECTOR (CIRC),WAFER 2.5MM 5P GIL-G LG CABLE SP06 6630V600932 CONNECTOR (CIRC),WAFER 32P 2.54MM MALE B-B...
  • 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 0RS2200K607 220 OHM 2 W 5.00% TA62 R2740 0RS2200K607 220 OHM 2 W 5.00% TA62 SW801S 140-289A SWITCH,PUSH POWER SDDF3PASP013 LG C&D UL/C R2741 0RS2200K607 220 OHM 2 W 5.00% TA62 SWT1 140-313B SWITCH,TACT 2LEAD 160G(TA) LG C&D NON 0RS2200K607 220 OHM 2 W 5.00% TA62...
  • Page 65 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION SWT6 140-313B SWITCH,TACT 2LEAD 160G(TA) LG C&D NON L108 156-A02R RESONATOR,CRYSTAL 18.432MHZ 30PPM 16PF BK SWITCH,TACT 2LEAD 160G(TA) LG C&D NON SWT7 140-313B L117 166-E02F RESONATOR,CERAMIC 500KHZ BK . 140-313B SWITCH,TACT 2LEAD 160G(TA) LG C&D NON...
  • Page 66 SOCKET (CIRC),CPT9PIN 14/360 STRAIGHT T403 6174V-5007A FBT, 6174Z-6500A 44 JW 6174Z-6400B VE 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 VARISTORS, VC561D-14A ILJIN 560V 10% - 66 -...
  • Page 67 P/NO: 3854VA0124A - S1(1/2) 2003.7.22...
  • Page 68 P/NO: 3854VA0124A - S1(2/2) 2003.7.22...

  • Page 69: Svc. Sheet

    SVC. SHEET : 3854V A0124A-S1...

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