LG 15LS1RA Service Manual
Lcd tv, chassis: ln71a
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Also See for 15LS1RA:
- Owner's manual (56 pages) ,
- Manual de usuario (56 pages) ,
- Owner's manual (56 pages)
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Owner's Manual
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Table of Contents
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Summary of Contents for LG 15LS1RA
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Page 1: Service Manual
LCD TV SERVICE MANUAL CHASSIS : LN71A MODEL : 15LS1RA 15LS1RA-MK CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. -
Page 2: Table Of Contents
CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SERVICING PRECAUTIONS..............4 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................18 EXPLODED VIEW .................. 20 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 Shock, Fire, or other Hazards. -
Page 4: Servicing Precautions
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 circuit foil.
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Page 6: Specification
Base detachable Size (W x D x H) 302.2(W) x 166.3(D) x 68(H) Tilt Degree -3(-0/+3) ~ +10(±2) 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 - 6 -... - Page 7 3. Engineering Specification ITEM Specification Remark ENERGY VIDEO POWER CONSUMPTION LED COLOR Normal Active ≤ 40W Green Stand By ≤ 1W(110V) ≤ 1W(220V) D-SUB 1 : RED 2 : Green 10 : Digital GND Pin configuration 3 : Blue 4 : ID2 (GND) 5 : S.T (GND) 6 : RED GND 7 : Green GND...
- Page 8 5. Outgoing Condition Item Condition Remark Power Volume Level Main Picture Input Main Last Channel TV 2 Mute Channel Auto Programme To start Manual Programme TV 2 Memory Fine 0 Favourite Programme PICTURE Clear Optimum Soft User Contrast Brightness Color Sharpness Tint Cool...
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Page 9: Adjustment Instruction
ADJUSTMENT INSTRUCTION 1. Application Range 4) Click “Read” tab, and then load download file(XXXX.bin) by clicking “Read”. This document is applied to 15", 20” LCD TV.(chassis : LN71A) 2. Designation 1) The adjustment is according to the order which is designated and which must be followed, according to the plan which can be changed only on agreeing. - Page 10 2) Confirmation 3.2. Function Check (a) We confirm whether “0x8C” address of EEPROM (1) Check display and sound “0xB4” is “0xAA” or not. - Check Input and Signal items (b) If “0x8C” address of EEPROM “0xB4” isn’t “0xAA”, 1) TV we adjust once more.
- Page 11 G CUTOFF 00 – 7F Offset adjustment - NTSC Service Mode OPTION DATA(According to Suffix) B CUTOFF 00 – 7F BRIGHT 00 – 3F Bright adjustment 15LS1RA-MK 20LS1RA-MK CONTRAST 00 - 64 Luminance adjustment 3970 1920 AUTO_COLOR_ Auto COLOR Resolution...
- Page 12 5.2. EEPROM DATA READ (1) Signal Table ST OP ST ART A DH A DL Delay 100ms ST ART ST OP 128 Bytes (2) Command Set Adjustment Contents CMD(hex) ADR(hex) ADL(hex) Details EEPROM READ 0-Page 0~7F Read 0-Page 80~FF Read 1-Page 0~7F Read 1-Page 80~FF Read 2-Page 0~7F Read...
- Page 13 6. Signal Timing(Resolution) - 15” only Mode Section Polarity DOT CLOCK Frequency Total Period(E) Display(A) Front Sync.(D) Back Resolution Remark [MHz] [kHz]/ [Hz] Porch (B) Porch (F) H(Pixels) 25.175 31.469 640 x 480 V(Lines) 59.94 H(Pixels) 40.0 37.879 1056 800 x 600 V(Lines) 60.317 H(Pixels)
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Page 14: Troubleshooting
TROUBLESHOOTING No power :[A]Process (LED indicator off) Check short of main B/D Check 15V or 5V or Change LIPS. of LIPS. Fail Pass Check Output of Change Q904. Q904. Fail Pass Check Output of Change IC903. IC903. Fail Pass Check LED Assy. Change LED Assy. - Page 15 :[B]Process No Raster Check LED Status Repeat [A] PROCESS. on display unit. Fail Pass Check Change IC900, IC901, IC906, IC900, IC901, IC906, IC908, IC908, IC909, IC910. Fail IC909, IC910. Pass Check the input/ Change IC100. Output of IC100. Fail Pass Check inverter Change inverter connector or connector or inverter.
- Page 16 No Raster on AV Signal No Raster on TV(RF) signal (Component, CVBS, S-VHS) Check 5V of TU500. Repeat Check the output Re-solder or change the [A] Process . of TU500. Fail Fail defect part. Pass Check the Change R103, R104, R106, R108, signal of R103, R104, R132, L822, L800, L801.
- Page 17 No Sound Check the Change source input. input source. Fail Pass Re-solder or Change the defect part. Check the input/output Check X100. Fail of IC100 Pass Check the input/output Re-solder or change the defect part. of IC400 Fail Pass Check the speaker Change the speaker Fail Pass...
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Page 18: Block Diagram
BLOCK DIAGRAM RS-232C (Option) - 18 -... - Page 19 MEMO - 19 -...
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Page 20: Exploded View
EXPLODED VIEW - 20 -... -
Page 21: Exploded View Parts List
Cover MOLD HIPS 51SF HIPS 51SF 20/15 LS1R STAND BODY COVER , SILVER SPRAY MCK30233401 Cover MOLD HIPS 51SF LS1R HIPS 51SF LS1R-holder cable management EBU36682701 Main Total Assembly 15LS1RA-MK BRAND LN71A EBR31760601 PCB Assembly SUB T.T LP68A LS1R-ZK ALRDLFX BB3 control 6871TPT318E PCB Assembly,Power PLLM-M602A POWER T.T CMO L225W 22””Wide Scaler Dimming... - Page 24 Mar., 2007 P/NO : MFL37762601 Printed in Korea...