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Summary of Contents for LG RF-20CC20M
- Page 1 website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html COLOR TV SERVICE MANUAL CHASSIS : MC-019A MODEL : RF-20/21CC20M/V MODEL : RT-20/21CC20M CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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Page 2: Table Of Contents
CONTENTS CONTENTS ......................2 SAFETY PRECAUTIONS ..................3 SERVICING PRECAUTIONS ................4 SPECIFICATIONS ....................6 DESCRIPTION OF CONTROLS ..............7 ADJUSTMENT......................10 PURITY & CONVERGENCE ADJUSTMENT ...........13 BLOCK DIAGRAM ....................16 EXPLODED VIEW ....................18 EXPLODED VIEW PARTS LIST ..............19 REPLACEMENT PARTS LIST ..............20 - 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: 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.
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Page 6: Specifications
SPECIFICA TIONS Note : Specification and others are subject to change without notice for improvement. Video input system: PAL-B/G, D/K, I/I SOUND IF : 33.4MHz (B/G) SECAM-B/G, D/K,L/L’ 32.9MHz (I/I) NTSC M 32.4MHz (D/K) NTSC 4.43 34.4MHz (M) Intermediate Frequency (Unit : MHz) Power requirement : 110~240V, 50/60Hz VISION IF : 38.9MHz COLOR IF : 34.47MHz(4.43) -
Page 7: Description Of Controls
DECRIPTION 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 8 10. MUTE switches the sound on or off. 11. TV/AV selects TV or AV mode. clears the menu from the screen. switches the set on from standby. 12. I/II/ (option) selects the language during dual language broadcast. (option) selects the sound output. POWER MUTE 13.
- Page 9 Front panel Shown is a simplified representation of the front or side panel. Here shown may be somewhat different from your set. VIDEO VIDEO OK F F VOL G G E E PR D D ON/OFF r r MENU VIDEO AUDIO §...
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Page 10: Adjustment
ADJUSTMENT Safety Precautions Option Code Function Remark 1. It is safe to adjust after using insulating transformer W/O TBS between the power supply line and chassis input to WITH TBS prevent the risk of electric shock and protect the instrument. W/O EYE 2. - Page 11 Table below. 5) Press the OK( ) button to memorize the data. Status Initial Data Remark 6700VPF009G Tuner P/N 6700VPF016A LG Innotek(W/S TUNER) Marker DAEWOO(W/S TUNER) 2.7! 0.05V AGC Voltage 2.7! 0.05V 6700VPF009S Tuner P/N BLO-R...
- Page 12 2. Deflection Initial Setup Data Status Default 21" FLAT S/S 21" FLAT LG 3. Deflection Adjustment Procedure VL (Vertical Linearity) Adjust so that the boundary line between upper and lower half is in accord with geometric horizontal center of the CPT.
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Page 13: Purity & Convergence Adjustment
PURITY & CONVERGENCE ADJUSTMENT Caution: 5. Reconnect the internal degaussing coil. Convergence and Purity have been factory aligned. Do not attempt to tamper with these alignments. 6. Position the beam bender locking rings at the 9 o'clock However, the effects of adjacent receiver components, or position and the other three pairs of tabs (2,4 and 6 pole replacement of picture tube or deflection yoke may require the magnets) at the 12 o'clock position. - Page 14 1.ADJUST YOKE Z-AXIS FIRST 2 .ADJUST BEAM BENDER 2 POLE TO GET EQUAL BLUE MAGNET TO GET FOUR EQUAL COLOR CIRCLES COLOR CIRCLES MAGNETS 8. Referring to above, perform the following two steps: 6. Reconnect the internal degaussing coil and apply AC power. a.
- Page 15 ROTATION DIRECTION RING MOVEMENT OF RED OF BOTH TABS PAIRS AND BLUE BEAMS OPPOSITE POLE SAME OPPOSITE POLE SAME UP/DOWN ROCKING OF THE YOKE LEFT/RIGHT ROCKING OF THE YOKE UP/DOWN ROCKING OF THE YOKE LEET/RIGHT ROCKING OF THE YOKE CAUSES OPPOSITE ROTATION OF RED CAUSES OPPOSITE SIZE CHANGE OF THE CAUSES OPPOSITE ROTATION OF RED CAUSES OPPOSITE SIZE CHANGE OF...
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Page 16: Block Diagram
BLOCK DIAGRAM - 16 -... - Page 17 MEMO - 17 -...
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Page 18: Exploded View
EXPLODED VIEW - 18 -... -
Page 19: Exploded View Parts List
2426VSD0018 CPT SET, 2055-00670H A51QAE320X000MBB BARE(0.0-0.5) 120-C77G SPEAKER,FULLRANGE C122P02K1459 MOTOR JOY 8 OHM 10/15W 130 57*117 6400VF5001B SPEAKER,MID-RANGE LG FOSTER 16 OHM 5/7W 83DB 1 150-D02K COIL,DEGAUSSING, DEGAUSSING,CU 19 235T 80 OHM 150-D02N COIL,DEGAUSSING, DEGAUSSING,CU 21 60T 12 OHM 150-D02X COIL,DEGAUSSING CU 21”... -
Page 20: Replacement Parts List
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION 0DR210009AC BAV21 TP DO35 200V 0.2A 1A 50SEC 100A D902 D903 0DR210009AC BAV21 TP DO35 200V 0.2A 1A 50SEC 100A IC01 0ICTMPH004D TDA9381PS/N2/3I,0782 PHILIPS 64P ST D904 0DR140049AC 1N4004A T-81 TP DO41 500V 1.0A 30A - 10UA 0IMCRAU001A... - Page 21 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 22 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 23 4.7K OHM 1/6 W 5% TA52 R554 R556 0RD1500F609 150 OHM 1/6 W 5.00% TA52 SW01 140-315A TACT SKHV17910B LG C&D NON 12V R572 0RD5600F609 560 OHM 1/6 W 5% TA52 140-315A TACT SKHV17910B LG C&D NON 12V SW02 R573 0RD2403F609 240K OHM 1/6 W 5.00% TA52...
- Page 24 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION PJ201 6612VJH004F PJ6056F PARK ELEC AV 4P PJ201 6612VJH004H PJ6056A PARKELEC 6P ACCESSORIES 3828VA0376A MANUAL,OWNERS MC019A 090A/D TX 3828VA0376G MANUAL,OWNERS MC019A 090A/D TX 052A 6710V00090D REMOTE CONTROLLER MC019A W/O TXT 21FA3 MISCELLANEOUS F801 0FS4001B53C...
- Page 26 PRINTED CIRCUIT BOARD COMPONENT LOCATION GUIDE SIDE A/V MAIN & CPT C01..B4 C404 ..G4 C612..B3 C814 ..D1 D904..B2 P541..C3 R09..B4 R226..E5 R601..B3 R908..A1 C02..B4 C405 ..G4 C621..A2 C815..E3 DB801..G2 P601..B2 R10..B4 R227 ..D5 R602..B3 R909..A1 C03..B3 C406 ..G4 C622..A3 C816..E3 HIC01..D3 P602..B2 R11..B4...
- Page 27 Mar.,2004 P/NO : 3828VD0137U Printed in Korea...
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