LG RT-44SZ50LP Service Manual
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LG RT-44SZ50LP Service Manual

LG RT-44SZ50LP Service Manual

Lcd projection tv
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All manuals and user guides at all-guides.com
LCD Projection TV
SERVICE MANUAL
CHASSIS : MB-03CA
MODEL : RT-44/48/52SZ50LP
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG RT-44SZ50LP

  • Page 1 All manuals and user guides at all-guides.com website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html LCD Projection TV SERVICE MANUAL CHASSIS : MB-03CA MODEL : RT-44/48/52SZ50LP CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    All manuals and user guides at all-guides.com CONTENTS CONTENTS ........................2 SAFETY PRECAUTIONS ....................3 SERVICING PRECAUTIONS ..................4 CONTROL DESCRIPTIONS ....................6 SPECIFICATIONS ......................10 ADJUSTMENT INSTRUCTIONS ..................14 BLOCK DIAGRAM......................20 PRINTED CIRCIUT BOARD ...................25 EXPLODED VIEW ......................34 EXPLODED VIEW PARTS LIST ..................35 REPLACEMENT PARTS LIST ..................36 SVC.

  • Page 3: Safety Precautions

    All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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.
  • Page 5 All manuals and user guides at all-guides.com 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.

  • Page 6: Control Descriptions

    PLAY 9. PSM (Picture Status Memory) recalls your preferred picture setting. 10. SLEEP sets the sleep timer. 11. VCR BUTTONS control a LG video cassette recorder. - 6 -...
  • Page 7 All manuals and user guides at all-guides.com 12. TV/AV selects the remote operating mode. switches the set on from standby. 13. ARC (Aspect Ratio Control) changes the picture format. POWER 14. PIP BUTTONS MULTIMEDIA TV/AV switches the sub picture on or off. PR +/- LIST selects a program for the sub picture.
  • Page 8 All manuals and user guides at all-guides.com Front panel Lamp indicator, operation indicator, and temperature indicator, located below the front panel con- trols reveal the operating status of the set. TV/AV MENU 7 8 9 1. MAIN POWER (ON/OFF) 7. OPERATION INDICATOR (Refer to p.7) switches the set on or off.
  • Page 9 All manuals and user guides at all-guides.com Rear panel AUDIO (L)/ AV3 INPUT SOCKET MONO VIDEO S-VIDEO S-VIDEO INPUT ANT IN 75Ω PC/DTV INPUT COMPONENT COMPONENT INPUT 1 INPUT 2 SOCKET 576i/480i 576i/480i (XGA/ 576p/480p 576p/480p 576p/ 720p/ 720p/ 480p/ 1080i 1080i 1080i)

  • Page 10: Specifications

    SPECIFICATIONS NOTE : Specifications and others are subject to change without notice for improvement. Scope This specification can be applied to the LCD Projection(RT-44SZ50LP/ RT-48SZ50LP/ RT-52SZ50LP) Test and Inspection Method 1) performance:Follow the Standard of LG TV test 2) Standards of Extra requirement...
  • Page 11 All manuals and user guides at all-guides.com Feature and Function Specification Item Remark Unit REMOCON LG Code RGB Input Separate D-Sub 15 Pin RGB Audio (L, R) Input Center Speaker Mode Input Component Audio (R, L) Input Component Input Y, P...
  • Page 12 All manuals and user guides at all-guides.com Specification Remark Item Unit DC Voltage, Digital, 5V 4.875 5.125 DC Voltage, Tuning voltage DC Voltage, LCD Driver, 5V DC Voltage, LCD Driver, 17.5V 17.5 DC Voltage 3.3, SUB MICOM 3.15 3.45 DC Voltage 2.5V, SUB MICOM 2.438 2.600 DC Voltage, FAN...
  • Page 13 All manuals and user guides at all-guides.com Option Specification Remark Item Unit 0 : Standard Volume Curve 1 : Non-Standard (Southeast Asia,Central America) 0 : Support FLOP Text Top 1 : Support All (FLOP + TOP) 0 : Do not save DUAL When converting Channel I_II SVC 1 : Save DUAL when Converting Channel Lamp_Type...

  • Page 14: Adjustment Instructions

    All manuals and user guides at all-guides.com ADJUSTMENT INSTRUCTIONS 1. Application Object 4. LCD adjustment This instruction is for the application to the LCD Projection 4-1. NRS adjustment [When the LCD pannel load data on regular pixel using high 2. Notes speed charge/ discharge with sample &...
  • Page 15 All manuals and user guides at all-guides.com Optical measuring equipment Adjustment Connector for RS-232C Adjustment Cable PC Pattern Generator <Fig 2.TV set status Adjustment> (3)Preparation for Adjustment 1) Connect the PC PATTERN GENERATOR, circuit for adjustment and adjustment JIG as shown <Fig 2>. 2) Adjust output pattern of PC PATTERN GENERATOR to possible display and then turn on the power.
  • Page 16 All manuals and user guides at all-guides.com (3) Offset Adjustment 8. H/V Position Adjustment 1) Press Adjust key on the remote control to enter the adjustment mode after more than 10 seconds of receiving (1) Required Test Equipments the signals. A remote control of adjustment 2) Press “4.AD9883 Adjust”...
  • Page 17 All manuals and user guides at all-guides.com 1) Select the VDP Test Pattern signal to R1, G1, B1. (3) Preparation for Adjustment 2) Press the Adjust key to select 62352 and then select 1) Composite the equipment as shown Fig.2, and place the RVREF, GVREF, BVREF in adjust mode set on fixation stand.
  • Page 18 All manuals and user guides at all-guides.com 14. RL2L : Lower 9bit of MID1 brightness correction 27. BL3H : Upper 9bit of MAX brightness correction coefficient in B MID1. coefficient in R MID2. --- Change according to RMID2 and RMID1 value. --- Change according to BMID1 and BMAX value.
  • Page 19 All manuals and user guides at all-guides.com 4) Output the VDP TEST PATTERN signal correspond to the MIN value. Read the white coordinate and communicate with ET7050 IC through measurement equipment of optics. Adjust screen coordinates data to adjust the color uniformity of miner point.

  • Page 20: Block Diagram

    All manuals and user guides at all-guides.com BLOCK DIAGRAM 1. Video Input Path - 20 -...
  • Page 21 All manuals and user guides at all-guides.com 2. Syns I/O Path - 21 -...
  • Page 22 All manuals and user guides at all-guides.com 3. Audio Input Path - 22 -...
  • Page 23 All manuals and user guides at all-guides.com 4. Control Signal Connection Diagram- IIC - 23 -...
  • Page 24 All manuals and user guides at all-guides.com 5. General Control Signal - 24 -...
  • Page 25 All manuals and user guides at all-guides.com MEMO - 25 -...

  • Page 26: Exploded View

    All manuals and user guides at all-guides.com EXPLODED VIEW(44”) - 26 -...

  • Page 27: Exploded View Parts List

    BRACKET,REAR AV RT-44SZ50LP MB03CA ABS, AF-303S 3508V00583A 6871VMMR04C PWB(PCB) ASSEMBLY,MAIN MB-03CA RT-XXSZ50LP M/I FOR CHINA 6871VPMA36D PWB(PCB) ASSEMBLY,POWER SMPS MB-03CA RT-44SZ50LP M/I FOR CHINA 6871VSMX92C PWB(PCB) ASSEMBLY,SUB TUNER MB03CA RT-XXSZ50LP FOR CHINA 6871VSMX90F PWB(PCB) ASSEMBLY,SUB DIGITAL MB03CA RT-44SZ50LP M/I FOR CHINA...
  • Page 28 All manuals and user guides at all-guides.com EXPLODED VIEW(48”) - 28 -...
  • Page 29 SHIELD, RT-48SZ50LP MB03CB SECC(EGI) CKD 4814V00384F SHIELD, RT-48SZ50LP MB03CA SECC(EGI) CKD 6871VSME02A PWB(PCB) ASSEMBLY,SUB INTER NB03JA RN-48SZ40H 5900V11001D FAN,DC B1232S12B2-LG DONGYANG 120*120*30 12V 950+-10 RPM 8-14V 300MM 4810V00717C BRACKET,NON RT-48SZ50LP MB03CB ABS, AF-303S CKD 4850V00012M CUSHION,FILTER 109*109*2 POLYURETHAN RN-48SZ40 3550V00281B...
  • Page 30 All manuals and user guides at all-guides.com EXPLODED VIEW(52”) - 30 -...
  • Page 31 All manuals and user guides at all-guides.com EXPLODED VIEW PARTS LIST Part No. Description 6400WESC01A SPEAKER,WOOFER C080P23K1450 ESTEC WOOFER 8OHM 15/25W 84DB 80 NON 6400DESA01A SPEAKER,TWEETER D016D01K1450 ESTEC TWEETER(DOME) 8HMOHM 15/25W 85DB 50 NON 6411VCH001F POWER CORD ASSEMBLY A001P201 CHAUS NON 2110MM HOUSING BLACK L1=500 3091V00520C CABINET ASSEMBLY,RT-52SZ50LP NON MB03CA SKD,XCANVAS 3211V00140C...

  • Page 32: Replacement Parts List

    0TR387500AA CHIP 2SC3875S(ALY) KEC 0ISG272012A M27W201(2M BIT 3.3V) 32PLCC TP OTP Q1001 0TR387500AA CHIP 2SC3875S(ALY) KEC IC301 0ICTMLG003C LGDT1502M LG IC 304P QFP Q1002 0TR387500AA CHIP 2SC3875S(ALY) KEC IC302 0ITI740000Q SN74LVC00AD 14SOP R/TP LOGIC D-TV Q1003 0TR387500AA CHIP 2SC3875S(ALY) KEC...
  • Page 33 All manuals and user guides at all-guides.com LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q101 0TR387500AA CHIP 2SC3875S(ALY) KEC Q206 0TR150400BA CHIP 2SA1504S(ASY) KEC 0TR387500AA 0TR150400BA Q102 CHIP 2SC3875S(ALY) KEC Q207 CHIP 2SA1504S(ASY) KEC Q102 0TR387500AA CHIP 2SC3875S(ALY) KEC Q208 0TR150400BA CHIP 2SA1504S(ASY) KEC...
  • Page 34 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L871 150-C02F COIL,CHOKE82UH PHY TURN AR301 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% R/TP 4P E24 150-C02F 0RRZVTA001D L881 COIL,CHOKE82UH PHY TURN AR302 22 OHM 1 / 16 W 1608 5% R/TP 4P E24 0LC1032101A...
  • Page 39 SW01 140-275E SPBS222EP011 POSTEC NON DC50V 0.3A T1401 0LCCE00017A HD-1M2012-301J 100MHZ 300OHM 140-313B T1402 0LCCE00017A SW01 TACT 2LEAD 160G(TA) LG C&D NON HD-1M2012-301J 100MHZ 300OHM SW02 140-313B TACT 2LEAD 160G(TA) LG C&D NON T1403 0LCCE00017A HD-1M2012-301J 100MHZ 300OHM SW03 140-313B TACT 2LEAD 160G(TA) LG C&D NON...
  • Page 40 P402B 6612VMH003A 36510-0032 MOLEX 48PIN PITCH2.54MM P403 6612BBBHN6A 440062-1 AMP DVI INTERACED RIGHT ANGLE ACCESSORIES 3828VA0453B MANUAL,OWNERS SY LG CH 100E TX 012E 6710V00100X REMOTE CONTROLLER,MB03CA TXT MISCELLANEOUS F800 0FS5001B51D FUSE,SLOW BLOW 5000MA 250 V 5.2X20 6620VF3201A SOCKET(CIRC),IC 822473-3 AMP 32PIN 2.54MM...
  • Page 41 All manuals and user guides at all-guides.com...
  • Page 42 All manuals and user guides at all-guides.com...
  • Page 43 All manuals and user guides at all-guides.com...
  • Page 44 All manuals and user guides at all-guides.com...
  • Page 45 All manuals and user guides at all-guides.com PRINTED CIRCUIT BOARD MAIN(TOP) MAIN(BOTTOM) DIGITAL(TOP) DIGITAL(BOTTOM) COMPONENT(TOP) COMPONENT(BOTTOM) SMPS DRIVER(TOP) TUNER(TOP) TUNER(BOTTOM) DRIVER(BOTTOM) SIDE A/V AC-INPUT...
  • Page 46 All manuals and user guides at all-guides.com RT-44/52SZ50LP RT-48SZ50LP CONTROL(TOP) INDEX(TOP) CONTROL(BOTTOM) INDEX(BOTTOM) LED(TOP) LED(TOP) LED(BOTTOM) LED(BOTTOM) SIDE AV CASE SW BALLAST SIDE AV BALLAST POWER S/W PRE-AMP CASE SW POWER S/W PRE-AMP...
  • Page 47 All manuals and user guides at all-guides.com Nov.,2003 P/NO : 3828VD0167B Printed in Korea...

This manual is also suitable for:

Rt-48sz50lpRt-52sz50lp

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