Related Manuals for LG 20LS1R-ZG
Summary of Contents for LG 20LS1R-ZG
- Page 1 LCD TV SERVICE MANUAL CHASSIS : CL-81 MODEL : 20LS1R-ZG CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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Page 2: Table Of Contents
CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............10 ISP MANUAL ...................12 SVC REMOCON ..................14 TROUBLE SHOOTING ................17 BLOCK DIAGRAM...................21 EXPLODED VIEW .................. 23 REPLACEMENT PARTS LIST ............... 25 SVC. SHEET ....................- 2 -... - Page 3 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 Shock, Fire, or other Hazards.
- Page 4 SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service prevent potential shock reasons prior to applying power to the manual and its supplements and addenda, read and follow the unit under test. SAFETY PRECAUTIONS on page 3 of this publication. 2.
- Page 5 IC Remove/Replacement 3. Solder the connections. Some chassis circuit boards have slotted holes (oblong) through CAUTION: Maintain original spacing between the replaced which the IC leads are inserted and then bent flat against the component and adjacent components and the circuit board to prevent excessive component temperatures.
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Page 6: Contents
NOTE : Specifications and others are subject to change without notice for improvement. 1. General Specification Item Content Remark User Model Name 20LS1R-ZG : PAL/SECAM (EU) Feature 20.1" LCD TV Chassis Name CL-81 General Scope External SW &Adj. PR(E /D ), VOL(F / G ), OK, MENU, INPUT, POWER... - Page 7 Tilt Degree -3(-0/+3) ~ +10(±2) Degree Tilt force Target 1.5Kgf (0.8Kgf ~ 2.0Kgf) Swivel Degree —NON Swivel Force —NON Appearance General Refer to Standard of LG(55)G1-1020 3. Engineering Specification ITEM Specification Remark ENERGE SYNC(V/H) VIDEO POWER CONSUMPTION LED COLOR ≤ 60W...
- Page 8 4. Optical Characteristic Item Specification Remark Viewing Angle Horizontal <CR≥10> Hydis Vertical Hydis 1.TV, AV : Luminance Luminance PSM : Dynamic CSM : Normal 2.PC Contrast : 100 Hydis Brightness : 50 Contrast Ratio All white/All black Hydis CIE Color Coordinates In AV input White 0.283...
- Page 9 5. Outgoing Condition Item Condition Remark Power Volume Level Main Picture Input Main Last Channel Pr 01 Mute STATION Auto Programme Manual Programme Programme Edit Favourite Programme None PICTURE Dynamic Normal Cool (PAL Multi) Dynamic Contrast Brightness Colour Sharpness Tint NTSC OPTION SOUND Flat...
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Page 10: Adjustment Instruction
ADJUSTMENT INSTRUCTION 1. Application 3.3 ADC Process "IIC_ SW" must set "0" for Auto Adjust (After ISP, This document is applied to 20.1" LCD TV(or Monitor TV) automatically set "0") which is manufactured in Monitor (or TV) Factory or is 3.3.1 DCXO setting in Video produced on the basis of this data Signal equipment displays... - Page 11 4.3 Confirmation of Color Coordinate Input : Full white pattern RGB-PC(Model : 37 Pattern : 04 MSPG-925) AV2-CVBS(Model : 202 Pattern : 04 MSPG-925) PSM : Dynamic Confirm whether x±0.03, y±0.03 or not (Color Temp.9300K) After Confirming color coordinate and luminance, "IIC_ SW" set "1"...
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Page 12: Isp Manual
ISP Manual 1. Connect between PC for ISP and Parallel port Jig though parallel port and USB cable. Parallel port Jig and Down-Load JIG though D-sub port. D-Sub Cable Supply AC220 V. Parallel port (Directly connection) Parallel port JIG 2. After set on Main board on pull the Lever at right, turn on ISP Down-Load JIG.(Push the MAIN POWER ON/OFF.) Lever MAIN Power ON/OFF LOC ISP Mode. - Page 13 # If you can’t use service remocon or enter ISP mode, please follow the method. (The method uses manual WISP program) 1. Change from WISP Automatic mode on to manual mode and then push Enter ISP Mode. 2. As soon as turn on AC power, push Send quickly and again. Check the following message in ISP status. *If ISP status is not ready, try again from AC power on.
- Page 14 4. After Erase Flash, Push Write Flash. Then select hex file after push Browse. Check file loading. Push Send and wait for writing flash. (Take turns (5)~(7) ) Check all OK! filename.hex 5. Push Verify Flash and Send.(Take turns (8)~(9).) Finally, Turn off and on Main AC Power and wait for ending LED blinking. SEDNA ISP Mode.
- Page 15 3. Push "Select Intel HEX File" and select hex file.(1) 4. Push "Erase" => "Program" => "Verify" => "Restart System" after loading file. (Take turns (2)~(5) ). 5. Check whether each stage (2)~(5) is successful in message box. 6. After finishing ISP, turn OFF Main Power AC switch and then turn ON the switch. - 15 -...
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Page 16: Svc Remocon
SVC REMOCON FUNTION REMARK POWER To turn the TV on or off MUTE To activate the mute function. P-CHECK To check TV screen image easily. Shortcut keys S-CHECK To check TV screen sound easily Shortcut keys ARC(23inch) To select size of the main screen Shortcut keys (Auto, 4:3, 16:9, 14:3, Zoom, Cinema Zoom) CAPTION... -
Page 17: 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 Q402 Fail Q402 Pass Check Output of Change U406 U406 Fail Pass Change LED Assy Check LED Assy Fail Pass... - Page 18 :[B]Process No Raster Check LED Status Repeat [A] PROCESS on display unit Fail Pass Check Change U401~U405, U401~U405, U407, U409 U407, U409 Fail Pass Check the input/ Change U301 Output of U301 Fail Pass Check inverter Change inverter Connector or inverter connector or inverter Fail Pass...
- Page 19 No Raster on AV Signal No Raster on TV(RF) signal (Component, CVBS, S-VHS) Check 5V, 33V of TU701 Repeat Check the output of Re-soldering or [A] Process Fail TU701 Fail Change the defect part Pass Check the signal of Change Q113, Q114, Q113, Q114, Q115 Q115, R194, R198, R184 Fail...
- Page 20 No Sound Check the Change source input input source Fail Pass Re-soldering or Check the input/output Change the defect part of U301 Fail Check X301 Pass Re-soldering or Check the input/output Change the defect part of U201 Fail Pass Check the speaker Change speaker Fail Pass...
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Page 21: Block Diagram
BLOCK DIAGRAM - 21 -... - Page 22 BLOCK DIAGRAM DESCRIPTION Power Supply Block (LIPS) LVDS Rx (DTC34LF86L) This Block Generates DC Voltage (5V,15V) to Main It is composed of DTC34LF86L/THC63LVDF84B. Control system from AC Power (100-240 V, 50/60 Hz, The LVDS Rx converts the LVDS data streams back 1.0A) into 24bits of CMOS/TTL data with Also it has the inverter function that converts input...
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Page 23: Exploded View
EXPLODED VIEW - 23 -... - Page 24 ABJ30635005 Cabinet Assembly, 20LS1R CL-81 20" 51SF CABINET ASSY,BK, LPL/CPT ,MA_LOCAL EAJ30338001 LCD,Module-TFT, LC201V02-SDA1 VGA 20.1INCH 640X480 450CD COLOR 72% 4/3 800 P7 Module(0RT-Pol., NEC D-IC TTL/Mini LVDS) LG PHILIPS LCD ACQ30637706 Cover Assembly, 20LS1R CL-81 20" BACK_51SF_BK_LPL, PAL_SECAM, MA_LOCAL...
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Page 25: 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 26 DATE: 2006. 08. 03. DATE: 2006. 08. 03. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C334 0CH3104K566 0805B104K500CT 100nF 10% 50 C202 0CK104CK56A 0603B104K500CT 100nF 10% 50 C335 0CH3104K566 0805B104K500CT 100nF 10% 50 C203 0CK104CK56A...
- Page 27 DATE: 2006. 08. 03. DATE: 2006. 08. 03. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C380 0CK104CK56A 0603B104K500CT 100nF 10% 50 U403 0IPMGSG018D LD1086DT18TR-LF 30V 1.8V - C381 0CK104CK56A 0603B104K500CT 100nF 10% 50 U201 0IPRP00007A...
- Page 28 DATE: 2006. 08. 03. DATE: 2006. 08. 03. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION TRANSISTOR R129 0RH1002D622 MCR10EZHJ103 10KOHM 5% 1/8W R149 0RH4701D622 MCR10EZHJ472 4.7KOHM 5% 1/8 Q203 0TFRH80001A RK7002T116 N-CHANNEL MOSFET R151...
- Page 29 DATE: 2006. 08. 03. DATE: 2006. 08. 03. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R347 0RH8202D622 MCR10EZHJ823 82KOHM 5% 1/8W R157 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R348 0RH1201D622 MCR10EZHJ122 1.2KOHM 5% 1/8 R159 0RJ4701D677...
- Page 30 DATE: 2006. 08. 03. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R739 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R743 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R744 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R745 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R746 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R747 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10...
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- Page 36 Aug., 2006 P/NO : MFL30105541 Printed in Korea...