LC300W01-A5(QRM)_EN[1]

Quick Repair [ T-CON Board & Inverter ]

Quick Repair Manual

CAUTION : BEFORE SERVICING THE MODULE, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

MODEL : LC300W01-A5 [ RoHS Verified ]

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Badness Condition ................2

Safety Precautions ................4

Servicing Precautions ...........5

Replace Of T-CON Board ......7

Replace Of Inverter(Master) ..9

Replace Of Inverter(Slave) ..11

Check the T-CON Board &Inverter P/N ........................13

CONTENTS

- Exchange Inverter : Case.15 ~Case18 - Exchange T-CON Board : Cace.1~ Case14

No. Symptom Defect Cause

Case 1 Abnormal Display

T-CON, Solder defect, CNT Broken

Case 2 Abnormal DisplayCase 3 Abnormal DisplayCase 4 Abnormal DisplayCase 5 Abnormal DisplayCase 6 Abnormal Display Abnormal Power section Case 7 Noise Solder defect, Short / CrackCase 8 Abnormal Display Abnormal Power section Case 9 Noise Solder defect, Short / CrackCase 10 Abnormal Display Abnormal Power section Case 11 Abnormal Display Abnormal Power section Case 12

Noise Solder defect, Short / CrackCase 13Case 14 No Display Fuse Open, Abnormal power sectionCase 15 No Light Inverter (one or both)Case 16 dim Light Inverter (one or both)Case 17 dim Light Inverter (one or both)Case 18 dim Light Inverter (one or both

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No. Symptom Defect Cause

Case 19 Panel Mura CELL DefectCase 20 Panel Mura CELL DefectCase 21 Panel Mura Press damageCase 22 Crosstalk CELL DefectCase 23 Crosstalk CELL DefectCase 24 Panel Mura Press damage

No. Symptom Defect Cause

Case 25 Vertical-block D-IC Crack / TCP/COF abnormal bondingCase 26 Vertical-line D-IC abnormal outputCase 27 Vertical-block D-IC Crack / TCP/COF abnormal bondingCase 28 Vertical-block D-IC Crack / TCP/COF abnormal bondingCase 29 Horizontal-block D-IC Crack / TCP/COF abnormal bondingCase 30 Horizontal-block D-IC Crack / TCP/COF abnormal bondingCase 31 Horizontal-line D-IC abnormal outputCase 32 Horizontal-block D-IC Crack / TCP/COF abnormal bondingCase 33 Horizontal-block D-IC Crack / TCP/COF abnormal bonding

- Exchange Source TAB : Case 25~ Case28- Exchange Gate TAB : Case 29~ Case33

- Unrepairable : Case.19~ Case24

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Warning?

Warning statements identify conditions orpractices that could result in injury or loss oflife if the warning is ignored and the product ishandled incorrectly.

Caution?

Caution statements identify conditions orpractices that could result in damage to thisproduct or other property if the caution isignored and the product is handledincorrectly.

WARNING

(1) Do not supply a voltage higher than that specified to thisproduct. This may damage the product and may cause afire.

(2) Do not use this product in locations where the humidity isextremely high, where it may be splashed with water, orwhere flammable materials surround it.

(3) Do not install or use the product in a location that dosenot satisfy the specified environmental conditions. Thismay damage the product and may cause a fire.

(4) If a foreign substance (such as water, metal, orliquid)gets inside the product, immediately turn off thepower.Continuing to use the product and cause fire or electricshock.

(5) If the product emits smoke or abnormal noise,immediately turn off the power. Continuing to use the

product cause fire or electric shock.

(6) Do not disconnect or connect the connector while thepower is on.

(7) Do not pull out or insert the power cable from/to an outletwith wet hands. It may cause electric shock.

(8) If the power cable is damaged or the connector is loose,do not use the product : otherwise this can lead to fire orelectric shock.

(9) Backlight Inverter uses a high voltage for Lamp. Do nottouch circuit substrate and caution on electric shockwhen handling the LCD Module Backlight Inverter unit.

SAFETY PRECAUTIONS

Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified.Only qualified personnel should perform service procedures.LCD Module is a display device to be divided into Board Ass’y and Backlight Ass’y. Board Ass’y consists of electric circuitry, PCB and two sheets of glass. Polarizer films areattached on each surface. The space between two sheets of glass are filled with Liquid Crystal. And the Backlight Ass’y includes Lamp Ass’y, optical sheets(Diffuser, Prism),LGP(Light Guide Panel), supporter main. When using / handing this LCD Module, pay attention to the below warning and cautions.

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CAUTION

(1) Do not place this product in a location that issubject to heavy vibration, or an unstablesurface such as an inclined surface. Theproduct may fall off or fall over, causing injuries.

(2) Before disconnecting cable from the product, besure to turn off the power. Be sure to hold theconnector when disconnecting cables. Pulling acable with excessive force may cause the coreof the cable to be exposed or break the cable,and this can lead to fire or electric shock.

(3) This product contains glass. If shock, vibration,heat or distortion is applied to the product, theglass may be broken.

(4) If glass surface of the display breaks or isscratched, do not touched the broken pieces orthe scratched with bare hands. You may beinjured.

(5) LCD Module requires to be handled with specialcare. LCD Module is not to be touched withmetal or hard materials. Must not be stressed byheat or mechanical impact.

(6) There are some particular components on therear panel of this product. Skin contact withthese components may cause an electric shock.So, handle with care.

(7) While moving the product, be sure to turn off thepower, disconnect all cables and watch yourstep. Dropping the product may cause injuriesfrom electric shock. So, while moving theproduct handle with care.

(8) When cleaning the panel is necessary, wipe itwith a soft and moistened cloth a neuraldetergent. Caution on connector area. Do notuse chemicals such as thinner or benzene.

(9) LCD Module emits heat from the Lamp,Backlight lamp, component parts. Therefore,the environmental temperature must not exceed50 . LCD Module Backlight Inverter system isdriven by high voltage, so it must avoidconductive materials.

(10) If repairing components with a lead line, highvoltage or high temperature components mustbe put out from a lead line and fix.

(11) Do not place an object on the surface of thedisplay. The glass may break or be scratched.

(12) This product may be damaged if it is subject toexcessive stresses (such as excessive voltage,current, or temperature). The absolutemaximum ratings specify the limits of thesestresses.

(13) Do not cover or wrap with any coveringmaterials while power is applied to the product.

(14) This product is made from various materialsuch as glass, metal, and plastic. Whendiscarding it, be sure to contact a purchaseplace.

(15) If a discrepancy occurs due to any arbitrarymodification or disassembly, LG.Philips LCD isnot responsible for function, quality or otheritems.

(16) Within the warranty period, general faults maybe charged for depending on responsibility forthe faults. You handle with care.

SERVICING PRECAUTIONS

Color TFT LCD Module is apt to be damaged by both electrical andmechanical stresses.

Users, therefore, are requested to follow the “Servicing precautionsof color TFT LCD Module” on the followings.

System Assembler

(1) Follow power sequence.Abnormal power sequence may cause critical malfunction orelectrical damage.

(2) Prevent physical stress.

(3) Prevent overheat.High temperature on the surface of the screen may cause poorquality. Please make LCD Module used on specified temperature. Low temperature under 10 makes LCD Module respond slowly,make Backlight worse operated and shorten very much thelifetime accordingly.

(4) Keep LCD Module dust-free.LCD Module is sensitive against dust.Dust can cause visual or functional problem.

(5) Do not touch TCP area.Do not touch TCP area at any case. It causes Driver IC crack, filmcrack etc. TCP is the weakest point of LCD Module.

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(6) Do not pull Backlight wire.Please do not pull the Backlight wire it can cause thewire disconnected or damaged.

(7) Check a connection of the Inverter & Backlightconnectors.Incomplete connection with can cause burnt in Backlightconnector or damage the inverter.

(8) Handle with care.Please do not drop, bend or hit the LCD Module.Physical stress can cause the defect such as broken.

(9) Keep mounting screw length and motor driver’storque.Strong weaken motor driver’s torque can make amechanical defect on LCD Module. Please keep thespecification.

(10) Do not operate for a long time under the samepattern.

Operating LCD Module for a long time under the samepattern can cause image persistence and can damage it.

(11) Defect panel also handled with care.To prevent making another defect, please handle thedefective LCD Module as a good one.Defective LCD Module should be repaired.

(12) Do not stack LCD Modules.LCD Module consists of fragile components such asTCPs or Glasses.Stacking LCD Module can cause undesired defects.

(13) Do not provide strong pressure at connecting.Strong pressure can transfer the force to TCP which is

the weakest parts of LCD Module. Eventually can makeTCP crack or other unexpected defect.

(14) Let the Backlight Wire backside of LCD Module.If let the Backlight wire front side of LCD Module, theBacklight connector can hurt the surface of polarizer.

(15) Never connect/disconnect at power on.LCD Module consists of CMOS which is known as weakcomponent against EOS. It can hurt the product.

(16) Electro-static discharge can make damage.Semi-assembled product should be handled with wriststrap.Earth human body when handle the LCD Module. Please do not touch the interface connector pin.

System Assembler/End User

(1) Keep clean the surface.Please wear rubber glove when touch the surface of LCDModule screen.Please use soft and anti-static material with n-Hexane ascleaner.

(2) Be careful not to make polarizer scratch.Surface of polarizer is soft, so it’s easily scratched.Please do not touch, press or rub on polarizer surfacewith materials over HB hardness.

(3) Be careful swift Temperature & Humidity change.Swift temperature and or humidity change can make dewcondensation or ice which cause nonconformance suchas malfunction.

(4) Keep out of water.Water on in the LCD Module can cause electrical short orcorrosion.Please wipe out or dry water carefully.

(5) Keep LCD Module corrosive gases free.Corrosive gas makes the polarizer and the circuitry partschemical damages and eventually cause defects.

(6) Keep the suitable temp. & suitable humidity.High temp. & high humidity shorten the lifetime.

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Prepare the LCM. Separate the Screw(6EA) Separate the Cover Shield

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Separate the 20pin FFC. Separate the 50pin FFC. Separate the T-CON Board.

Attach the Cover Shield and Assemble the Screw(6EA).

Assemble the 20pin FFC. Replace of T-CON Board and Assemble the 50pin FFC.* Guide Pin station keeping check.

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Prepare the LCM. Separate the Screw(6EA) Separate the Cover Shield

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Unlock of Connector and sperate the Wire Connector(2pin).

Separate the (8pin) FFC. Separate the Inverter.

Attach the Cover Shield and Assemble the Screw(6EA).

Assemble the Wire Connector(2pin). Replace of Inverter and Assemble the FFC(8pin).

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Prepare the LCM. The first, separate the FFC 20pinSeparate the Screw(4EA)

Separate the Cover Shield

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Unlock of Connector and sperate the Wire Connector(2pin).

Separate the (11pin) FFC. Separate the Inverter.

Assemble the Wire Connector(2pin). Replace of Inverter and Assemble the FFC(11pin).

Attach the Cover Shield and Assemble the Screw(4EA).

Assemble the FFC 20pin.

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Number of order progress.

The Marking position could be different each model of T-Con or inverter P/N.

This picture is different from origin model.Please Use it only as a reference.

The P/N that you can see on it is LG Philips. LCD’s P/N.

Please make sure that T-CON Board & Inverter needs to be ordered aftercerifying LGE P/N.

Case 1

Case 2

(Master)

(Slave)

T-CON Board

Inverter

Quick Repair Manual

MODEL : LC300W01-A5

March 2007Printed in Korea