Table of Contents
Related Manuals for LG RT-21FB45VQ/VT
Summary of Contents for LG RT-21FB45VQ/VT
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Page 1: Service Manual
COLOR TV SERVICE MANUAL CHASSIS : MC-049B MODEL: RT-21FB45VQ/VT CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. -
Page 2: Table Of Contents
CONTENTS Contents ........................2 Safety Precautions....................3 Control Descriptions..................4 Specifications......................6 Adjustment Instructions..................7 T rouble Shooting ....................11 Printed circuit board..................16 Block Diagram ......................19 Exploded View....................20 Exploded View Parts List ................21 Replacement Parts List .................22 SVC. Sheet........................- 2 -... -
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: Control Descriptions
DESCRIPTION OF CONTROLS All the functions can be controlled with the remote control handset. Some functions can also be adjusted with the buttons on the front panel of the set. Remote control handset Before you use the remote control handset, please install the bat- teries. - Page 5 17. SURROUND (º º / MENU/INDEX TV/AV selects surround sound. 18. VCR BUTTONS control a LG video cassette recorder. 19. PIP BUTTONS (option) switches the sub picture on or off. PR +/- selects a programme for the sub picture. SWAP alternates between main and sub picture.
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Page 6: Specifications
Test and Inspection Method (CST must be tested 40 ± 5°C . Humidity : 50%) 2) Relative Humidity : 65 ± 10% 1) Capacity : Follow LG electronics TV testing Standard. 2) Another Required Standard 3) Power : Standard input Voltage (110-240V~, 50/60Hz) -
Page 7: Adjustment Instructions
ADJUSTMENT INSTRUCTIONS 1. Application Object 4. Purity & Convergence adjustment These instructions are applied to all of the color TV, MC-049B. As preparatory operations before CPT Assembling assembling CPT, wind cotton Tape for 2. Notes protecting to CPT NECK and DY, CPT connection parts. -
Page 8: Screen Voltage Adjustment
(4) Maintain as angle of (3) and rotate the tab to accord with 2. White balance IIC Parameter vertical line of Red and Blue color in the middle of screen. Program TWBeng_v049 Program TWBeng_v049 Speed Delay (5) Open angle of the two tab of 6 pole magnet by isogonic Vcd Slave BCF0 Eprom_Slave... - Page 9 (4) VS (Vertical Shift) adjustment: 8-4. OPTION2 Function Adjust so that the geometric vertical center line is in accord Option Code Function with vertical center line of CPT. (5) HS(Horizontal Shift) adjustment: Without A/V2 Adjust so that the geometric horizontal center line is in With AV2 accord with horizontal center line of CPT.
- Page 10 8-6. OPTION4 Function Option Code Function ENG ONLY OSD L EU-5EA EU ETC GREECE EU-ALL FARSI ARAB URDU E+HINDI E+I+M+V E+THAI E+CHINA WEST EU TXT L EAST EU1 TURKEY EU EAST EU2 CYRILLIC1 CYRILLIC2 CYRILLIC3 TURK GRE1 TURK GRE2 TURK GRE3 ARAB FRA ARAB ENG ARAB HEB1...
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Page 11: Trouble Shooting
TROUBLE SHOOTING RF- STEREO MODEL PICTURE O. K / NO SOUND Selec t ed c o rrec t syst em In m enu Chec k t he wavef o rm Chec k / Rep lac e IF 1 o f TU101 TU 101 Chec k t he wavef o rm Chec k The Vo lt ag e... - Page 12 No Ras ter ( 2/ 2) CHECK B+ At D829 c at ho d e No rm al Ab no rm al Op en Is t he vo lt ag e a t Chec k eac h p in vo lag e o f IC11 Fuse o f AC line Chec k / Rep lac e Chec k t he...
- Page 13 NO Pic t ure No So und Is Any OSD d isp la yed ? Chec k IC11 p in71, 7 2, 73 Chec k rec eiving syst em in MENU & exec ut e Aut o Pro g ram . ( R, G, B o ut ) Do es t he auto Pro g ra m Op erat e p ro p erly...
- Page 14 AV STERRO / MONO MODEL Selec t c o rrec t syst em In m enu Chec k t he c o nnec t io n Of AV eq uip m ent Chec k t he wavef o rm At p in16, 17 o f IC11 Chec k TU1 01 Tuner Chec k t he vo lt ag e Chec k t he wavef o rm...
- Page 15 MEMO - 15 -...
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Page 16: Printed Circuit Board
PRINTED CIRCUIT BOARD MAIN - 16 -... - Page 17 COMPONENT LOCATION GUIDE C10 ..C4 C501..B4 C626 ..D5 D823..E1 J231 ..C1 J541 ..B3 J810 ..D2 R19 ..D1 R421..F3 R805 ..G2 C11 ..C4 C502..B4 C627..A2 D827 ..D2 J232 ..D1 J542 ..B3 J811 ..D2 R20 ..D1 R422 ..G3 R806 ..G3 C12 ..C4 C503 ..D4 C632 ..D4 D828 ..D2...
- Page 18 SIDE A/V - 18 -...
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Page 19: Block Diagram
BLOCK DIAGRAM VIDEO/AUDIO RESET DATA/CLOCK ON / OFF Y/Cb/Cr-IN SCART RGB-IN AV-IN TV / MONITOR OUT PIP-VIDEO PIP-RGB - 19 -... -
Page 20: Exploded View
EXPLODED VIEW P801 - 20 -... -
Page 21: Exploded View Parts List
PWB(PCB) ASSEMBLY,SUB PIP MC049B . 6871VSMAANB PWB(PCB) ASSEMBLY,SUB A/V MC049B 21FB45(SIDE-AV) 4810V00735C BRACKET, SIDE AV RT-21FB45VQ MC049B HIPS 60HR SHAHAB LOCAL 0IGL120104A IC,LG SEMICONDUCTOR CDS SENSOR MODULE(P1201-04) 332-057B SCREW,DRAWING ASSY,HEXAGON HEAD 1PTF0403116 SCREW TAP TITE(P),TRUSS HEAD + D4.0 L16.0 MSWR3/FZB P801 174-009U POWER CORD, POWER(W/HOLD,HOUSING)L=350,4.0... -
Page 22: Replacement Parts List
REPLACEMENT PARTS LIST 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 23 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 24 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 25 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 26 R609 0RD1000F609 100 OHM 1/6 W 5% TA52 18K OHM 1/6 W 2.00% TA52 R610 0RD1802F509 SW11 140-315A TACT SKHV17910B LG C&D 12V 0RD1101F609 1.1K OHM 1/6 W 5.00% TA52 140-315A TACT SKHV17910B LG C&D 12V R611 SW12 R612 0RD3301F609 3.3K OHM 1/6 W 5.00% TA52...
- Page 27 P/NO: 3854VA0162A - S1 2004.6.12...
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Page 28: Svc. Sheet
SVC. SHEET : 3854V A0162A-S... - Page 29 Oct., 2004 P/NO : 3828VD0196E Printed in Korea...