Table of Contents
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COLOR TV
SERVICE MANUAL
CHASSIS : MC-019A
MODEL : RF-15FB50ME/MX/VE/VX
MODEL :
RF-21FB50RX/VX
MODEL :
RT-15FB50M/ME/VE
MODEL :
RT-21FB50RQ/V/VE/VQ/VX/VW
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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Table of Contents
Related Manuals for LG RF-15FB50ME/MX/VE/VX
Summary of Contents for LG RF-15FB50ME/MX/VE/VX
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Page 1: Service Manual
COLOR TV SERVICE MANUAL CHASSIS : MC-019A MODEL : RF-15FB50ME/MX/VE/VX MODEL : RF-21FB50RX/VX MODEL : RT-15FB50M/ME/VE MODEL : RT-21FB50RQ/V/VE/VQ/VX/VW CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. -
Page 2: Table Of Contents
CONTENTS Contents ......................... 2 Safety Precautions ....................3 Servicing Precautions ..................4 Specifications ..................... 6 Description of Controls .................. 7 Disassembly Instructions ................10 Adjustment ......................11 Purity & Convergence Adjustment ............14 Block Diagram ......................17 Exploded View ....................18 Exploded View Parts List ................19 Replacement Parts List ................ -
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
DECRIPTIONS 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: Battery Installation
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 RF/RT-21FB20 series RF/RT-21FA30/31/32 series MENU OK MENU ON/OFF ON/OFF 9 10 1 2 3 CF/CT-21Q20K/21K/22K series CF/CT-21Q64K/65K/66K series TV/AV VIDEO AUDIO TV/AV VIDEO AUDIO ON/OFF ON/OFF 1 2 3 6 7 9 10 10 9 6 7 8 CF/CT-21Q60K/61K/62K series CF/CT-15Q90K/91K/92K series TV/AV ON/OFF...
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Page 10: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS Important note Chassis Assy Removal This set is disconnected from the power supply through the Grasp both side of Frame and pull it backward smoothly. converter transformer. An isolating transformer is necessary for service operations on the primary side of the converter transformer. -
Page 11: 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 12: Screen Voltage Adjustment
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 2.7! 0.05V AGC Voltage 6700VPF009S Tuner P/N BLO-R... - Page 13 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 14: 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 15 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 16 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 17: Block Diagram
BLOCK DIAGRAM - 17 -... -
Page 18: Exploded View
EXPLODED VIEW - 18 -... -
Page 19: Exploded View Parts List
EXPLODED VIEW PARTS LIST Replace only with part number specified. PART NO LOCA. NO DESCRIPTIONS 21" 15" 6334V21004B 6334V15001A 6334V21004A 6334V15001C 6334V21005A CPT,A51QDJ470X 00Q7NR LG-PHILIPS 15KHZ 120-C77M 120-C93G SPEAKER,FULLRANGE 4810V00088B 4810V00685A BRACKET,SPEAKER 150-D02X 150-D02Z COIL,DEGAUSSING 6150V-1014J 6150V-1014F 6150V-1019C... -
Page 20: Replacement Parts List
The components identified by mark critical for safety. REPLACEMENT PARTS LIST Replace only with part number specified. LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D807 0DD300009AC DIODE,RECTIFIER RU3AMV(1) TP SANKEN D808 0DR060009AA DIODE,RECTIFIERS TVR06J DO41 600V 0.6A IC01 0ICTMPH008C TDA9381PS/N2/3I,0837 PHILIPS 64P ST MC019A CHINA OSD... - Page 21 The components identified by mark For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film critical for safety. digit in the P/No. means as CE : Electrolytic RN : Metal Film Replace only with part number specified.
- Page 22 The components identified by mark For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film critical for safety. the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film Replace only with part number specified.
- Page 23 0RD1001F609 1K OHM 1/6 W 5% TA52 CONNECTOR 0RD1000F609 100 OHM 1/6 W 5% TA52 P01A 366-921B CONNECTOR,2.5MM 3P GIL-G LG CABLE . 0RD1203F609 120K OHM 1/6 W 5% TA52 P301 366-043K CONNECTOR,PLUG(4P) 0RD1000F609 100 OHM 1/6 W 5% TA52...
- Page 24 The components identified by mark For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film critical for safety. the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film Replace only with part number specified.
- Page 25 ACCESSORIES R801 0RD2701F609 2.7K OHM 1/6 W 5% TA52 R802 0RD2201F609 2.2K OHM 1/6 W 5.00% TA52 3828VA0375B MANUAL,OWNERS MC019A SY LG CH 069C TX R803 0RD1001F609 1K OHM 1/6 W 5% TA52 3828VA0375E MANUAL,OWNERS MC019A NAGHI LG R804 0RD4701F609 4.7K OHM 1/6 W 5% TA52...
- Page 26 6613V00006C JACK ASSYPJ6062C 2P<YL(SW)WH SK901 6620VBC003A SOCKET (CIRC),CPT PCS030A 8PIN 14/360 TH801 163-051F THERMISTOR,J503P84D140M290Q “ 163-054F THERMISTOR,J502P84D140M290Q TU101 6700VPF009Z TUNER,TAEM-G001D LG PAL FS “ 6700VPF009S TUNER,TAEL-G672D LG MULTI FS W/S VD801 164-003G VARISTOR TVR621D14A THINKING 620V 10% - 26 -...
- Page 27 PRINTED CIRCUIT BOARD WIRING DIAGRAM COMPONENT LOCATION GUIDE MAIN & CPT C01..B4 C403 ..G4 C607..B3 C811 ..G3 F812 ..E2 L801 ..E4 R05..B4 R218 ..D5 R554 ..D4 R820..F4 C02..B4 C404 ..G4 C611..B3 C812..E2 F801A ..G2 L802 ..E3 R06..B3 R219 ..D5 R555 ..D4 R822..F4 C03..B3 C405 ..G4...
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Page 28: Svc. Sheet
SVC. SHEET : 3854V A0083A-S SVC. SHE... - Page 29 Mar,2004 P/NO : 3828VD0126N Printed in Korea...