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LG RU-48SZ40 Service Manual

Chassis : nb-03ja lcd projection tv
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LCD PROJECTION TV

SERVICE MANUAL
CHASSIS : NB-03JA
MODEL : RU-48SZ40
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CANADA : http//biz.lgservice.com
USA
: http//www.lgservice.com
: http//lgservice.com/techsup.html

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Summary of Contents for LG RU-48SZ40

  • Page 1: Lcd Projection Tv

    CANADA : http//biz.lgservice.com : http//www.lgservice.com : http//lgservice.com/techsup.html LCD PROJECTION TV SERVICE MANUAL CHASSIS : NB-03JA MODEL : RU-48SZ40 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS ............2 SAFETY PRECAUTIONS .

  • Page 3: Safety Precautions

    If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1MΩ and 5.2MΩ. CANADA: LG Electronics Canada, Inc. 550 Matheson When the exposed metal has no return path to the chassis the Boulevard East Mississauga, Ontario L4Z 4G3 reading must be infinite.

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing instruments covered by this service manual and 3. The components used in the unit have a specified flame resistance and its supplements, read and follow the SAFETY PRECAUTIONS section of this dielectric strength. When replacing any components, use components manual.

  • Page 5: Description Of Controls

    DESCRIPTION OF CONTROLS Function Status Indicators Lamp indicator, operation indicator, and temperature indicator located below the front panel controls, reveal the operating status of the LCD projection TV. Operation Indicator Temperature Indicator Lamp Indicator TV is not connected to power outlet. Power Cord is connected, TV is in standby mode.
  • Page 6 On-Screen Displays This page describes your on-screen display and information banner options. Channel Label If a channel label has been Main Channel Display set, then it will appear here. Displays current channel number. PIP Display TV 13 This display MONO appears when PIP is active.
  • Page 7 Front Panel Controls POWER MENU ENTER Operation indicator. Lamp indicator. Temperature indicator. POWER MENU ENTER (Same as ENTER button on your remote control) See menu pages for instructions on using the on- VOLUME UP / DOWN screen menus. CHANNEL UP / DOWN The POWER, CHANNEL, TV/VIDEO, and VOLUME buttons work just as they do on your remote control.
  • Page 8 Remote Control Functions in TV Mode LIGHT MODE Illuminates the remote control Selects the remote operating mode: TV, keys. VCR, DVD, Cable, HDSTB, or Audio. Select other operating modes, for the remote to control external devices. TV/VIDEO Selects: Analog, Video1, Video2, Front video, Component1-2, RGB, and DVI MODE...
  • Page 9 Remote Control Functions in TV Mode MODE POWER Turns your TV or any other pro- FRONT grammed equipment on or off, depending on mode. NUMBER KEYPAD For direct channel selection and programming functions. ENTER FLASHBK ENTER FLASHBK When in the menu system and Tunes to the last channel other on-screen displays, viewed.
  • Page 10 Rear Connections Panel Connecting cables and external equipment to your TV. RF Connector: Antenna Used to connect analog ANT IN cable or antenna signals to the television, either directly or through your cable box. RGB INPUT S-VIDEO In PC/DTV A connection available with (XGA/ S-VIDEO 480p/...
  • Page 11 Front Connection Panel There are four jacks on the right front side behind the screen on your projection TV that make connecting Audio/Video devices like video games and camcorders very simple. The jacks are like those found on the back jack connection panel.

  • Page 12: Specification

    SPECIFICATION Product Specifications Models RU-48SZ40 Horizontal Size (Inches) 45.5 Height (Inches) 32.9 Depth (Inches) 15.3 Weight (lbs.) 68.3 Power Requirement AC 120V, 60Hz Television System American TV Standard, NTSC, ATSC with STB Television Channels VHF: 2 - 13 UHF: 14 - 69...

  • Page 13: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object (6) SUB menu composition of each adjustment mode Adjust Mode : RGB Alignment Step 123:1 This instruction is for the application to the LCD projection TV. 10. H_Position 315/315/315 Micom:V0.50 SubMicom:V01.31 LCDMicom:V01.31 Lamp:16 2. Notes 1) Adjust Mode : Sub adjustment menu selected by IN- (1) The power source insulation of this LCD Projection TV is START key.

  • Page 14: Screen Position Adjustment

    4) Select 4. 62352, then ready to adjust 6. RNRSH, 9. 5. Assembling Adjustment GNRSH and 11. BNRSH. 5) Let’s decrease vertical line Noise by using Volume button. 5-1. Screen Tilt & Keystone Adjustment (Input a R, G, B input signal, then adjust it individually) 6) When finishing the adjustment, get out of adjustment mode (1) Required Test Equipments by pressing IN-START button.
  • Page 15 3) Select 10. H_position with channel key in adjust mode. 2) Pattern Generator 1EA —> 16 step Gray Pattern, 64 step 4) Adjust data with using the left/right key on the remote con- Gray Pattern trol in order to be left/right semmetry screen. (Three blocks 3) Set Fixation Stand 1EA of the most outer block must be located the most outer 4) Remote Control 1EA...
  • Page 16 8) As shown above, output the VDP Test Pattern sig- 6. Mode : uniformity mode select --- adjustable if need nal(208/192/176/160/144/128/112/96/80/64/48/32/16) and *** 0 : 221point & 3level ---- defalut value change the RGB Data value of each step to come out *** 1 : 221point &...
  • Page 17 <L Coefficient Calculation Method> 29. RLMIN : Setting up the MINIUM Level of R --- Set under Using 3coefficient Level Assume that the value of R/G/B MIN, MID2,MID1 is 192, 448, 30. RLMID2 : Setting up the MIDDLE 2nd Level of R --- 704.
  • Page 18 At this time, make sure that deviation is +5~-5% and stan- dard is color coordinate of center. 5) White the miner, middle, maximum data for each point to confront to each MICOM address. 5-6. Brightness Adjusment of Main/Sub screen Operate this adjustment when the brightness of Main/Sub screen is different.

  • Page 19: Replacing The Lamp

    REPLACING THE LAMP * Connect your dealer or LG service center for replacing of new lamp. You must replace the lamp when: The projector image get darker or start to be deteriorated. Ø The lamp indicator is red(red, flashing alternately).

  • Page 20: Block Diagram

    Block Diagram - 20 -...
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  • Page 24: Exploded View

    EXPLODED VIEW Disassemble 302 and remove 2 screw of 300 bottom center to separate 300 from 400. - 24 -...

  • Page 25: Exploded View Parts List

    BRACKET,NON RN-48SZ40 NON NON LAMP 4980V00620A SUPPORTER,NON AL LAMP COVER RN-48SZ40H 3680V00067A LENS,RICOH OPTICAL ENGINE RN-48SZ40 . 5900V11001D FAN,DC B1232S12B2-LG 120*120*30 12V 950+-10 RPM 8-14V 300MM 5900V09005A FAN,DC G9225S12B2-RG 92*92*25 12V/140MA 1650+-10 RPM 8-14V 600MM 4810V00717A BRACKET,SUPPORTER RN-48SZ40 NB03JA ABS, AF-303S FAN 3550V00281A...

  • Page 26: Replacement Parts List

    REPLACEMENT PARTS LIST RUN DATE : 2004.2.16 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION IC304 0IMMRHY033A HY57V643220C(L)T6 86P 64M IC305 0IMMRHY033A HY57V643220C(L)T6 86P 64M IC01 0IMI623200B M62320FP 16P SOP TP I/O EXPANDER 0IMCRAL006A AT24C16AN10SI2.7 8P IC02 0IMI623200B M62320FP 16P SOP TP I/O EXPANDER IC400 0ICTMMI038B...
  • Page 27 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q1001 0TR387500AA CHIP 2SC3875S(ALY) KEC Q500 0TR150400BA CHIP 2SA1504S(ASY) KEC CHIP 2SC3875S(ALY) KEC BSS83 Q1002 0TR387500AA Q501 0TR830009BA Q1003 0TR387500AA CHIP 2SC3875S(ALY) KEC Q502 0TR830009BA BSS83 Q1004 0TR150400BA CHIP 2SA1504S(ASY) KEC Q504 0TR102009AG CHIP KRC102S SOT23 NA NA...
  • Page 28 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D822 0DD100009AM EU1ZV(1) TP SANKEN C110 0CE476VK6DC 47UF MV 50V 20% EG01C 1000V 0.5A 10A 100NSEC 50UA 0.01UF 1608 50V 10% D832 0DR010009AA C1100 0CK103CK56A D833 0DD100009AM EU1ZV(1) TP SANKEN C1101 0CE476VH6DC 47UF MV 25V 20%...
  • Page 29 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 30 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 31 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 32 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 33 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 34 Feb., 2004 P/NO : 3828VD0148V Printed in Korea CANADA: LG Electronics Canada, Inc. 550 Matheson Boulevard East Mississauga, Ontario L4Z 4G3 : LG Customer Interactive Center P.O.Box 240007, 201 James Record Road Huntsville, AL 35824 ATTN : CIC...
  • Page 40 PRINTED CIRCUIT BOARD TUNER(TOP) COMPONENT(TOP) COMPONENT(BOTTOM) MAIN(TOP) MAIN(BOTTOM) DIGITAL(TOP) TUNER(BOTTOM) SMPS LINE FILTER DIGITAL(BOTTOM) DRIVER(TOP) DRIVER(BOTTOM) CONTROL(TOP) CASE S/W SIDE A/V CONTROL(BOTTOM) PRE-AMP BALLAST INT.

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