Related Manuals for LG RM-20LA66K
Summary of Contents for LG RM-20LA66K
-
Page 1: Service Manual
LCD TV SERVICE MANUAL CHASSIS : ML-041B MODEL : RM-20LA66K CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. -
Page 2: Table Of Contents
CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............10 TROUBLE SHOOTING ................12 BLOCK DIAGRAM...................17 WIRING DIAGRAM ..................19 EXPLODED VIEW .................. 20 EXPLODED VIEW PARTS LIST ..............21 REPLACEMENT PARTS LIST ............... 22 SVC. SHEET ....................- 2 -... -
Page 3: Product Safety
SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in 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 unit under test. manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or... - Page 5 IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit should be used to remove and replace the IC.
-
Page 6: Specification
SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range This specification is applied to ML-041B chassis. 2. Requirement for Test Testing for standard of each part must be followed in below condition. (1) Temperature: 25°C ±... - Page 7 4. Feature and Function Item Specification Remark Teletext Top(option) TOP, FLOF REMOCON NEC Code PAL/ NTSC CVBS VIDEO Input Rear S-VIDEO Input Rear Component input Rear (option, NT) PERI TV Connector Full SCART : 1 Rear (option,EU) H/p input Rear RS-232 Discrete IR 2 Carrier Stereo...
- Page 8 6.Engineering Specification Item Specification Remark Power Supply H/V Sync Video Power Consumption LED Color Normal On/On Active GREEN Stand By Off/On Suspend Mode On/Off DPM Off Mode Off/Off Cut-off Switch off PBP SWAP ON/OFF ITEM Spectification Remark D-SUB Pin Configuraion 1: RED 2: Green 3: Blue:...
- Page 9 6-2.Power Item Unit Remark AC Power Shut Down Voltage DC Voltage, Inverter 22.8 25.2 DC Voltage, LCD Panel 11.4 12.6 DC Voltage, Audio 14.0 16.0 DC Voltage, Tuner(5) DC Voltage, Tuner(9) Japan only DC Voltage, Tuning(31) DC Voltage, VCTi(5) DC Voltage, VCTi(8) DC Voltage, VCTi(3.3) DC Voltage, VCTi(1.8) DC Voltage, GM2221 (3.3)
-
Page 10: Adjustment Instruction
ADJUSTMENT INSTRUCTION 2.2.2 Component Mode adjustment 1. Application Object 2.2.2.1 Adjustment preparation This instruction is for the application to the LCD TV. Conduct Heat Run at the RF fog signals for more than 2. Adjustment 30 minutes. Connect the Pattern Generator to the Component 2.1 Adjustment overview Jack (Y, Pb, Pr) of LCD TV. -
Page 11: Svc Remocon
SVC REMOCON To turn the TV on or off POWER To turn the TV on automatically if the power is supplied to the TV. (Use the POWER ON POWER key to deactivate): It should be deactivated when delivered. To activate the mute function. MUTE To check TV screen image easily. -
Page 12: Troubleshooting
TROUBLESHOOTING No power :[A]Process (LED indicator off) Check short of main B/D Check 15V or 5V or Change Lips Fail of Lips Pass Check Output of Change Q1100 Fail Q1100 Pass Check Output of Change IC1107, IC1104 IC1107, IC104 Fail Pass Change LED Assy Check LED Assy... - Page 13 No Raster :[B]Process Check LED Status Repeat A PROCESS on display unit Fail Check L900,L901 Change L900,L901, L902,L903 L902,L903 Fail Pass Check the input/ Change IC901 Output of IC901 Fail Pass Change inverter Check inverter connector or inverter Connector or inverter Fail Pass Change panel link...
- Page 14 No Raster on Component signal Repeat [A] Process Pass Check the signal of Check JA1200 or L1200, L1202, L1203 RCA CABLE Fail Pass Re-soldering or Check the input/ Change the defect part, Fail output of IC1 Check X11 Re-soldering or Check the input/output Change the defect part Fail...
- Page 15 No Raster on AV Signal No Raster on TV(RF) signal (Video, S-Video) Check 5V, 33V of TU1000 Repeat Check the output of Re-soldering or [A] Process TU1000 Fail Fail Change the defect part Pass Check the signal of Change L1209, L1210, L1209, L1210, L1212 L1212 Fail...
- Page 16 No Sound Check the Change source input input source Fail Pass Re-soldering or Check the input/output Change the defect part of IC1 Fail Check X11 Pass Re-soldering or Check the input/output Change the defect part of IC100,IC101 Fail Pass Check the speaker Change speaker Fail Pass...
-
Page 17: Block Diagram
BLOCK DIAGRAM SIDE_AV POWER - 17 -... - Page 18 BLOCK DIAGRAM DESCRIPTION 1. Video Controller Unit & Display Data Conversion Unit The video controller unit receives the video signals inputted through the tuner, AV port (AV1, AV2, S-Video, component), and converts them into an analog RGB signal through the microcomputer (VCTI) combined with the video decoder that integrates various functions in one chip.
-
Page 19: Wiring Diagram
LOCAL KEY IR_LED - 19 -... -
Page 20: Exploded View
- 20 -... -
Page 21: Exploded View Parts List
LCD(LIQUID CRYSTAL DISPLAY), LC201V02-A3K3 LG PHILPS TFT COLOR 20.1" VGA,IPS,450NITS,LVDS or 6304FLP188A LCD(LIQUID CRYSTAL DISPLAY), LC201V02-A3KA LG PHILPS TFT COLOR PB FREE MODULE , SS D-IC 6304FLP188A LCD(LIQUID CRYSTAL DISPLAY), LC201V02-A3KA LG PHILPS TFT COLOR PB FREE MODULE , SS D-IC 3809TKD003W BACK COVER ASSEMBLY, RM-20LA66K 3808V00366 FOR N.AMERICA, N/BLACK... -
Page 22: Replacement Parts List
REPLACEMENT PARTS LIST For Capacitor & Resistors, the CC, CX, CK, CN, CH : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit in the CQ : Polyestor RS : Metal Oxide Film P/No. means as follows; CE : Electrolytic RN : Metal Film CF : Fixed Film RH : CHIP, Metal Glazed(Chip) - Page 23 DATE: 2005. 01.28. DATE: 2005. 01.28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C902 0CH3103K516 10000PF 50V 10% B(Y5P) 2012 C955 0CH5390K416 39PF 50V 5% NP0 2012 R/TP C1001 0CK103CK51A 0.01UF 1608 50V 10% R/TP B(Y C121...
- Page 24 DATE: 2005. 01.28. DATE: 2005. 01.28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - Q603 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - IC905 0IZZTSA047A "ML-041B VGA NT 20"" LPL ATMEL" Q900 0TR387500AA CHIP 2SC3875S(ALY) BK KEC -...
- Page 25 DATE: 2005. 01.28. DATE: 2005. 01.28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1152 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% D 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP R1154 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D...
- Page 26 3.3UH CERATECH R/TP R2208 0RN2000F409 200 1/6W 1% TA52 R1226 0RH0472D622 47 1/10W 5 D.R/TP SW2200 140-313A TACT 2LEAD 100G(TA) LG C&D N R1227 0RH0752D622 75 1/10W 5 D.R/TP SW2200 140-313B TACT 2LEAD 160G(TA) LG C&D N R1228 0RH0752D622 75 1/10W 5 D.R/TP SW2201 140-313A TACT 2LEAD 100G(TA) LG C&D N...
- Page 27 Date: 2004. 05. 07 P/No.:3854TN1001A...
- Page 28 Date: 2004. 05. 07 P/No.:3854TN1001A...
- Page 29 Jan., 2005 P/NO : 3828TSL108Z Printed in Korea...