LG 17LS5R Service Manual
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LG 17LS5R Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : LP68A
MODEL : 17LS5R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
17LS5R-ZA

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Summary of Contents for LG 17LS5R

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : LP68A MODEL : 17LS5R 17LS5R-ZA 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 ..............9 TROUBLE SHOOTING ................13 BLOCK DIAGRAM...................17 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.

  • Page 6: Specification

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. General Specification Item Content Remark User Model Name 17LS5R-ZA : PAL/SECAM (EU) Feature 17” LCD TV Chassis Name LP68A General Scope External SW ), VOL(...
  • Page 7 3. Engineering Specification ITEM Specification Remark ENERGY SYNC(V/H) VIDEO POWER LED COLOR Normal On/On Active ≤ 40W Green Sleep Mode Off/On ≤ 1W Off Mode ≤ 1W Audio output Source 2.7W 3.9W Min : -10% 2.7W 3.9W Max : +30% 2.7W 3.9W D-SUB...
  • Page 8 5. Outgoing Condition Item Condition Remark Power Volume Level Main Picture Input Main Last Channel Pr 01 Mute STATION Auto Programme To set System Storage from Search Manual Programme To set Storage System Band Channel Fine Search Name Programme Edit To set Favourite Programme PICTURE...

  • Page 9: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Range 5) After downloading, check “OK” message. These documents is applied to 17" LCD TV(chassis : LP68A) ( 4 ) f i l ex x x .bi n 2. Designation ( 6 ) ..OK 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 4. Total Assembly line process 4.6. Option data setting (SVC OSD setting) 4.1. Adjustment Preparation - Tool Option 20LS5R-ZA REMARK (1) Above 30 minutes Heat-run in RF no signal 8 9 6 (2)15 Pin D-Sub Jack is connected to the signal of Pattern Resolution Generator.
  • Page 11 5. Adjustment Command 5.2. EEPROM DATA READ (1) Signal Table 5.1. Adjustment Command (LENGTH=84) ST OP ST ART A DH A DL Adjustment Contents CMD(hex) Description Delay 100ms ST ART ST OP EEPROM ALL INIT. EEPROM all clear 128 Bytes EEPROM Read EEPROM Read EEPROM Write...
  • Page 12 6. Preset CH information SOUND PIF[MHz] SYSTEM VIDEO NAME System Mode PR 0 575.25 SECAM-DK DIGITAL DUAL C 34 LGE Gumi PR 1 45.25 PAL-BG PHILIPS MONO C 01 PR 2 175.25 PAL-BG PHILIPS STEREO FLOF C 05 PR 3 231.25 PAL-I FUBK...

  • Page 13: 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. Fail Q904. Pass Check Output of Change IC903. IC903. Fail Pass Check LED Assy. Change LED Assy.
  • Page 14 :[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 15 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 signal of Change R104, R106, R108, R104, R106, R108, R131 R131, L822, L800, L801.
  • Page 16 No Sound Check the Change source input. input source. Fail Pass Re-solder or Change the Check the input/output defect part. Fail of IC100 Check X301. Pass Re-solder or change the Check the input/output defect part. of IC400 Fail Pass Check the speaker Change the speaker Fail Pass...

  • Page 17: Block Diagram

    BLOCK DIAGRAM RS-232C (Option) - 17 -...
  • Page 18 BLOCK DIAGRAM DESCRIPTION Power Supply Block (LIPS) This Block Generates DC Voltage (5V,15V) to Main Control system from AC Power (100-240 V, 50/60 Hz, 1.0A) Also it has the inverter function that converts input voltage to AC Rms value for the LCD lamp. Voltage Regulator Voltage regulator convert the input 5V,15V to proper 1.8V, 3.3V, 5V, 12V for Main control system.
  • Page 19 MEMO - 19 -...

  • Page 20: Exploded View

    EXPLODED VIEW - 20 -...
  • Page 23 Feb., 2007 P/NO : MFL37159905 Printed in Korea...

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