LG RT-44SZ21RB Service Manual

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P/NO : 3828VD0133J

May.,2003

Printed in Korea

e-mail:http://www.LGEservice.com/techsup.html

DLP Projection TV

SERVICE MANUAL

CHASSIS : MB-02JB

MODEL : RT-44SZ21RB

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

AV4

ON/OFF

AUDIO

L/MONO

VIDEO S-VIDEO

TV/AV MENU

VOL

website:http://biz.LGservice.com

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Summary of Contents for LG RT-44SZ21RB

Page 1 DLP Projection TV SERVICE MANUAL CHASSIS : MB-02JB MODEL : RT-44SZ21RB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. May.,2003 ON/OFF P/NO : 3828VD0133J Printed in Korea AUDIO L/MONO VIDEO S-VIDEO TV/AV MENU...
Page 2: Table Of Contents
CONTENTS CONTENTS ........................2 SAFETY PRECAUTIONS ....................3 SERVICING PRECAUTIONS ..................4 CONTROL DESCRIPTIONS ....................6 REPLACINIG LAMP ......................10 SPECIFICATIONS ......................11 ADJUSTMENT INSTRUCTIONS ..................16 BLOCK DIAGRAM......................18 PRINTED CIRCUIT BOARD ...................22 EXPLODED VIEW ......................32 EXPLODED VIEW PARTS LIST ..................33 REPLACEMENT PARTS LIST ..................34 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: Control Descriptions
9. PSM (Picture Status Memory) recalls your preferred picture setting. 10. I/II selects the language during dual language broadcast. selects the sound output. 11. VCR BUTTONS control a LG video cassette recorder. - 6 -...
Page 7 12. TV/AV selects the remote operating mode. switches the set on from standby. POWER 13. SLEEP sets the sleep timer. COMPONENT TV/AV 14. TELETEXT BUTTONS LIST These buttons are used for teletext. For further details, see the ‘Teletext’ section. MUTE PR - PR + 15.
Page 8 Front panel Lamp indicator, temperature indicator, and operation indicator, located side the front panel controls reveal the operating status of the DLP (Digital Light Processing) projection TV. ON/OFF AUDIO L/MONO VIDEO S-VIDEO TV/AV MENU ON/OFF AUDIO L/MONO VIDEO S-VIDEO TV/AV MENU 1.
Page 9 Rear panel ANT IN 75Ω COMPONENT 480i/p 720p 576i/p 1080i INPUT 1 INPUT 2 S-VIDEO A/V1 A/V2 MONITOR INPUT INPUT OUTPUT VIDEO AUDIO AUDIO MONO DVD/DTV INPUT ANT IN 75Ω AERIAL SOCKET DVD/DTV INPUT SOCKETS COMPONENT 480i/p 576i/p UPGRADE PORT 720p 1080i This port is used to upgrade the...
Page 10: Replacinig Lamp
REPLACING THE LAMP * Contact your dealer or LG service center for replacing the new lamp. You must replace the lamp when; The set image get darker or start to be deteriorated. ﬂ The lamp indicator is orange. ﬂ The message “LAMP REPLACE“ appears on the screen.
Page 11: Specifications
This specification can be applied to all the DLP Projection TV related to MB-02JB Chassis. Test and Inspection Method 1) performance:Follow the Standard of LG TV test 2) RCA JACK performance :Follow the standard of LG. Test Condition 1) Temperature :25¡ 5 °C(CST : 40°C ¡ 5 °C) 2) Relative Humidity:65¡...
Page 12 Specification Remark Item Teletext TOP, FLOP, LIST, 128 PAGE REMOCON LG Code Audio/Video RF Input A/V Input 3 group (Front 1/ Rear 2) S-Video Input 2 group (Front 1/ Rear 1) 4810I/P, 5761I/P, 720P, 1080I A/v Monitor Output 1 group (Rear)
Page 13 Specification Item Remark Unit DC Voltage, Digital/DLP Board 2.5V DC Voltage, Digital/DLP Board 3.3V DC Voltage, Digital/DLP Board 50V DC Voltage, DLP Board 12V 11.5 12.5 DC Voltage, Turning voltage DC Voltage, MICOM DC Voltage, Fan 11.5 12.5 External Interface Specification Remark Item...
Page 14 DMD specification Specification Remark Item Unit Screen Size 0.65’’ Number of pixels 1024(H)x576(V) Pixel pitch 13.68(H)x13.68(V) 40.5 Dot clock Operating Temperature Operating Humidity Storage Temperature Storage Humidity Mirror Tilt 13.68 Mirror pitch axis of rotation-lower right to upper left SCP Clock frequency Risa/Fall Time(10% to 90%) DMD Sefect specification Specification...
Page 15 Option Specification Remark Item Unit 0 : Slow volume Curve Screen Size 1 : Fast Volm Cuve Number of pixels 0 : Not realize TOP method Pixel pitch 1 : Realize TOP method Dot clock 0 : Dual Sound Mode No Save Operating Temperature 1 : Dual Sound Mode Save Operating Humidity...
Page 16: Adjustment Instructions
ADJUSTMENT INSTRUCTIONS 1. Application Object 4. CPLD Memory work This instruction is for the application to the TV MB-02JB (1)Required Test Equipments & Preparation for Adjustment chassis of DLP Projection. 1) Connect the PC and memory JIG as shown figure. 2) Turn on JIG MAIN POWER SW.
Page 17 (3) Adjustment Sequence 1) Adjust Tilt to be horizontal optical Engine plate and rotate two adjustment knobs to adjust Key stone. 2) Stick the Engine plate with screws after the tilt and keystone are been under the spec. 3) Select H-position with channel key in adjust mode. 4) Change the data with volume key on the remote control for adjustment so that the left/right of pattern are symmetrized...
Page 18: Block Diagram
BLOCK DIAGRAM 1. DLP Block - 18 -...
Page 19 2. DLP Driver Block - 19 -...
Page 20 3. Digital Board Block TXC- TXC+ TX0- TX0+ TX1- TX1+ TX2- TX2+ TXT_FB SUB_Cr SUB_Y SUB_Cb SYNCVAL SDA2 SCL2 SDA1 SCL1 - 20 -...
Page 21 4. SMPS Block ANA_Sub B D - 21 -...
Page 22: Printed Circuit Board
PRINTED CIRCUIT BOARD MAIN(TOP) - 22 -...
Page 23 MAIN(BOTTOM) - 23 -...
Page 24 TUNER(TOP) - 24 -...
Page 25 TUNER(BOTTOM) - 25 -...
Page 26 DLP DRIVER B/D(TOP) DLP DRIVER B/D(BOTTOM) - 26 -...
Page 27 DIGITAL BOARD (TOP) DIGITAL (BOTTOM) - 27 -...
Page 28 SMPS - 28 -...
Page 29 POWER/LED(TOP) PRE-AMP(TOP) PREAMP(BOTTOM) POWER/LED(BOTTOM) L/F(BOTTOM) L/F(TOP) - 29 -...
Page 30 COMPONENT(TOP) FRONT(TOP) COMPONENT(BOTTOM) FRONT(BOTTOM - 30 -...
Page 31 MEMO - 31 -...
Page 32: Exploded View
EXPLODED VIEW - 32 -...
Page 33: Exploded View Parts List
SCREEN, TOPPAN LENTI. RE-44SZ20RD 994*560.5*2.1 HAZE 85% 3790V00689A FILTER(MECH), FILTER RE-44SZ20 ACRYL 44 DLP PJTV WINDOW FILTER 3550V00230A COVER, NON RE-44SZ30 NON ENGINE LENS FRONT 3091V00456C CABINET ASSEMBLY, RT-44SZ21RB NON MB02JB ENGINE 4980V00423C SUPPORTER, MIRROR EGI TOP,RE-44SZ20RD 4270V00012A BAR, SUB DECO,RE-44SZ20RD, AL ,FRONT,LG 3530V00A28A...
Page 34: Replacement Parts List
IC, 822473-3 AMP 32PIN 2.54MM NIKEL PLCC IC831 0ISK615311B IC, STR-G6153T(LF1101) 5PIN BK STR HN-61A40R 0ICTMLG003C IC301 IC, LGDT1502M LG IC 304P QFP TRAY READY-2 AMKOR IC841 0ILI817000G IC, LTV817M-VB 4P,DIP BK PHOTO COUPLER 0ISO211900A IC301 IC, CXA2119M 28P,SOP TP VIDEO SWITCHING...
Page 35 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D404 0DD184009AA DIODE,KDS184S CHIP 85V 300MA KEC TP ZD2K 0DZRM00178A DIODE,UDZS TE-17 5.1B ROHM R/TP SMD 0.2W 5.1V 5MA -PF D405 0DR050008AA DIODE,SD05.TC R/TP SEMTECH SOD323 5V 5A 15A ZD4K 0DZRM00178A DIODE,UDZS TE-17 5.1B ROHM R/TP SMD 0.2W 5.1V 5MA -PF 0DD184009AA...
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 CONNECTOR,2.36PAI 1P . K/M AUTO R426 0RN1201F409 1.2K OHM 1/6 W 1.00% TA52 P803B 366-922E CONNECTOR,2.5MM 6P GIL-G LG CABLE R/A (B TO C) R556 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% R/TP 4P E24 SERIES HN-61A40R P804A 366-009D CONNECTOR,2.36PAI 1P .
Page 40 LOCA. NO PART NO DESCRIPTION R804 0RD2202F609 22K OHM 1/6 W 5% TA52 140-313B SWITCH, TACTTACT 2LEAD 160G(TA) LG C&D NON 10K OHM 1/6 W 1.00% TA52 R805 0RN1002F409 SW701 6600DU2093H SWITCH, DIP2-390233-2 AMP 0 . DIP 4PIN R/T RE44SZ20 0RD0152F609 15 OHM 1/6 W 5.00% TA52...
Page 41 RELAYDG5D1-0-2 DAIICHI 5V 0.000106A 250V 5A. OHM 1A 6700MF0001C TU101 TUNER TAUD-Z240D LG MULTI FS 4SYS,2IN1,MAIN TU102 6700MF0001D TUNER TAFD-Z241P LG MULTI FS 4SYS,2 IN 1,SUB VA800 164-003K VARISTOR SVC621D-14A ILJIN 620V 0% UL/CSA/VDE BK X300 6204B60001A OSCILLATOR SVH100DDM SUNNY 13.5MHZ +/- 25 PPM 3.3V...
Page 42 P/No : 3854VA0114D-S1(1/2) 2003.05.06...
Page 43 P/No : 3854VA0114D-S1(2/2) 2003.05.06...
Page 44 P/No : 3854VA0114D-S2(1/2) 2003.05.06...
Page 45 P/No : 3854VA0114D-S2(2/2) 2003.05.06...
Page 46: Svc. Sheet
SVC. SHEET : 3854VA0114D-S1 SVC. SHEET : 3854VA0114D-S2...

LG RT-44SZ21RB Service Manual

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