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LCD TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS : LB81C MODEL : 42LG61YD 42LG61YD-AC website:http://biz.LGservice.com Internal Use Only

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Page 1: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

LCD TVSERVICE MANUAL

CAUTIONBEFORE SERVICING THE CHASSIS,READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : LB81C

MODEL : 42LG61YD 42LG61YD-AC

website:http://biz.LGservice.comInternal Use Only

Page 2: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

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CONTENTS

CONTENTS .............................................................................................. 2

PRODUCT SAFETY ..................................................................................3

SPECIFICATION ........................................................................................6

ADJUSTMENT INSTRUCTION ...............................................................12

TROUBLE SHOOTING ............................................................................18

BLOCK DIAGRAM...................................................................................22

EXPLODED VIEW .................................................................................. 34

SVC. SHEET ...............................................................................................

Page 3: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

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SAFETY PRECAUTIONS

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in theSchematic 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 preventShock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.

General Guidance

An isolation Transformer should always be used during theservicing of a receiver whose chassis is not isolated from the ACpower line. Use a transformer of adequate power rating as thisprotects the technician from accidents resulting in personal injuryfrom electrical shocks.

It will also protect the receiver and it's components from beingdamaged by accidental shorts of the circuitry that may beinadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this TV receiver is blown,replace it with the specified.

When replacing a high wattage resistor (Oxide Metal Film Resistor,over 1W), keep the resistor 10mm away from PCB.

Keep wires away from high voltage or high temperature parts.

Before returning the receiver to the customer,

always perform an AC leakage current check on the exposedmetallic parts of the cabinet, such as antennas, terminals, etc., tobe sure the set is safe to operate without damage of electricalshock.

Leakage Current Cold Check(Antenna Cold Check)With the instrument AC plug removed from AC source, connect anelectrical jumper across the two AC plug prongs. Place the ACswitch in the on position, connect one lead of ohm-meter to the ACplug prongs tied together and touch other ohm-meter lead in turn toeach exposed metallic parts such as antenna terminals, phonejacks, etc. If the exposed metallic part has a return path to the chassis, themeasured resistance should be between 1MΩ and 5.2MΩ. When the exposed metal has no return path to the chassis thereading must be infinite.An other abnormality exists that must be corrected before thereceiver is returned to the customer.

Leakage Current Hot Check (See below Figure) Plug the AC cord directly into the AC outlet.

Do not use a line Isolation Transformer during this check.Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitorbetween a known good earth ground (Water Pipe, Conduit, etc.)and the exposed metallic parts.Measure the AC voltage across the resistor using AC voltmeterwith 1000 ohms/volt or more sensitivity.Reverse plug the AC cord into the AC outlet and repeat AC voltagemeasurements for each exposed metallic part. Any voltagemeasured must not exceed 0.75 volt RMS which is corresponds to0.5mA.In case any measurement is out of the limits specified, there ispossibility of shock hazard and the set must be checked andrepaired before it is returned to the customer.

Leakage Current Hot Check circuit

1.5 Kohm/10W

To Instrument'sexposed METALLIC PARTS

Good Earth Groundsuch as WATER PIPE,CONDUIT etc.

AC Volt-meter

IMPORTANT SAFETY NOTICE

0.15uF

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LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

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CAUTION: Before servicing receivers covered by this servicemanual and its supplements and addenda, read and follow theSAFETY PRECAUTIONS on page 3 of this publication.NOTE: If unforeseen circumstances create conflict between thefollowing servicing precautions and any of the safety precautions onpage 3 of this publication, always follow the safety precautions.Remember: Safety First.

General Servicing Precautions1. Always unplug the receiver AC power cord from the AC power

source before;a. Removing or reinstalling any component, circuit board

module or any other receiver assembly.b. Disconnecting or reconnecting any receiver electrical plug or

other electrical connection.c. Connecting a test substitute in parallel with an electrolytic

capacitor in the receiver.CAUTION: A wrong part substitution or incorrect polarityinstallation of electrolytic capacitors may result in anexplosion hazard.

2. Test high voltage only by measuring it with an appropriate highvoltage meter or other voltage measuring device (DVM,FETVOM, etc) equipped with a suitable high voltage probe.Do not test high voltage by "drawing an arc".

3. Do not spray chemicals on or near this receiver or any of itsassemblies.

4. Unless specified otherwise in this service manual, cleanelectrical contacts only by applying the following mixture to thecontacts with a pipe cleaner, cotton-tipped stick or comparablenon-abrasive applicator; 10% (by volume) Acetone and 90% (byvolume) isopropyl alcohol (90%-99% strength)CAUTION: This is a flammable mixture.Unless specified otherwise in this service manual, lubrication ofcontacts in not required.

5. Do not defeat any plug/socket B+ voltage interlocks with whichreceivers covered by this service manual might be equipped.

6. Do not apply AC power to this instrument and/or any of itselectrical assemblies unless all solid-state device heat sinks arecorrectly installed.

7. Always connect the test receiver ground lead to the receiverchassis ground before connecting the test receiver positivelead.Always remove the test receiver ground lead last.

8. Use with this receiver only the test fixtures specified in thisservice manual.CAUTION: Do not connect the test fixture ground strap to anyheat sink in this receiver.

Electrostatically Sensitive (ES) DevicesSome semiconductor (solid-state) devices can be damaged easilyby static electricity. Such components commonly are calledElectrostatically Sensitive (ES) Devices. Examples of typical ESdevices are integrated circuits and some field-effect transistors andsemiconductor "chip" components. The following techniquesshould be used to help reduce the incidence of componentdamage caused by static by static electricity.1. Immediately before handling any semiconductor component or

semiconductor-equipped assembly, drain off any electrostaticcharge on your body by touching a known earth ground.Alternatively, obtain and wear a commercially availabledischarging wrist strap device, which should be removed toprevent potential shock reasons prior to applying power to the

unit under test.2. After removing an electrical assembly equipped with ES

devices, place the assembly on a conductive surface such asaluminum foil, to prevent electrostatic charge buildup orexposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ESdevices.

4. Use only an anti-static type solder removal device. Some solderremoval devices not classified as "anti-static" can generateelectrical charges sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generateelectrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protectivepackage until immediately before you are ready to install it.(Most replacement ES devices are packaged with leadselectrically shorted together by conductive foam, aluminum foilor comparable conductive material).

7. Immediately before removing the protective material from theleads of a replacement ES device, touch the protective materialto the chassis or circuit assembly into which the device will beinstalled.CAUTION: Be sure no power is applied to the chassis or circuit,and observe all other safety precautions.

8. Minimize bodily motions when handling unpackagedreplacement ES devices. (Otherwise harmless motion such asthe brushing together of your clothes fabric or the lifting of yourfoot from a carpeted floor can generate static electricitysufficient to damage an ES device.)

General Soldering Guidelines1. Use a grounded-tip, low-wattage soldering iron and appropriate

tip size and shape that will maintain tip temperature within therange or 500°F to 600°F.

2. Use an appropriate gauge of RMA resin-core solder composedof 60 parts tin/40 parts lead.

3. Keep the soldering iron tip clean and well tinned.4. Thoroughly clean the surfaces to be soldered. Use a mall wire-

bristle (0.5 inch, or 1.25cm) brush with a metal handle.Do not use freon-propelled spray-on cleaners.

5. Use the following unsoldering techniquea. Allow the soldering iron tip to reach normal temperature.

(500°F to 600°F)b. Heat the component lead until the solder melts.c. Quickly draw the melted solder with an anti-static, suction-

type solder removal device or with solder braid.CAUTION: Work quickly to avoid overheating the circuitboard printed foil.

6. Use the following soldering technique.a. Allow the soldering iron tip to reach a normal temperature

(500°F to 600°F)b. First, hold the soldering iron tip and solder the strand against

the component lead until the solder melts.c. Quickly move the soldering iron tip to the junction of the

component lead and the printed circuit foil, and hold it thereonly until the solder flows onto and around both thecomponent lead and the foil.CAUTION: Work quickly to avoid overheating the circuitboard printed foil.

d. Closely inspect the solder area and remove any excess orsplashed solder with a small wire-bristle brush.

SERVICING PRECAUTIONS

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LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

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IC Remove/ReplacementSome chassis circuit boards have slotted holes (oblong) throughwhich the IC leads are inserted and then bent flat against thecircuit foil. When holes are the slotted type, the following techniqueshould be used to remove and replace the IC. When working withboards using the familiar round hole, use the standard techniqueas outlined in paragraphs 5 and 6 above.

Removal1. Desolder and straighten each IC lead in one operation by gently

prying up on the lead with the soldering iron tip as the soldermelts.

2. Draw away the melted solder with an anti-static suction-typesolder removal device (or with solder braid) before removing theIC.

Replacement1. Carefully insert the replacement IC in the circuit board.2. Carefully bend each IC lead against the circuit foil pad and

solder it.3. Clean the soldered areas with a small wire-bristle brush.

(It is not necessary to reapply acrylic coating to the areas).

"Small-Signal" Discrete TransistorRemoval/Replacement1. Remove the defective transistor by clipping its leads as close as

possible to the component body.2. Bend into a "U" shape the end of each of three leads remaining

on the circuit board.3. Bend into a "U" shape the replacement transistor leads.4. Connect the replacement transistor leads to the corresponding

leads extending from the circuit board and crimp the "U" withlong nose pliers to insure metal to metal contact then soldereach connection.

Power Output, Transistor DeviceRemoval/Replacement1. Heat and remove all solder from around the transistor leads.2. Remove the heat sink mounting screw (if so equipped).3. Carefully remove the transistor from the heat sink of the circuit

board.4. Insert new transistor in the circuit board.5. Solder each transistor lead, and clip off excess lead.6. Replace heat sink.

Diode Removal/Replacement1. Remove defective diode by clipping its leads as close as

possible to diode body.2. Bend the two remaining leads perpendicular y to the circuit

board.3. Observing diode polarity, wrap each lead of the new diode

around the corresponding lead on the circuit board.4. Securely crimp each connection and solder it.5. Inspect (on the circuit board copper side) the solder joints of

the two "original" leads. If they are not shiny, reheat them and ifnecessary, apply additional solder.

Fuse and Conventional ResistorRemoval/Replacement1. Clip each fuse or resistor lead at top of the circuit board hollow

stake.2. Securely crimp the leads of replacement component around

notch at stake top.3. Solder the connections.

CAUTION: Maintain original spacing between the replacedcomponent and adjacent components and the circuit board toprevent excessive component temperatures.

Circuit Board Foil RepairExcessive heat applied to the copper foil of any printed circuitboard will weaken the adhesive that bonds the foil to the circuitboard causing the foil to separate from or "lift-off" the board. Thefollowing guidelines and procedures should be followed wheneverthis condition is encountered.

At IC ConnectionsTo repair a defective copper pattern at IC connections use thefollowing procedure to install a jumper wire on the copper patternside of the circuit board. (Use this technique only on ICconnections).

1. Carefully remove the damaged copper pattern with a sharpknife. (Remove only as much copper as absolutely necessary).

2. carefully scratch away the solder resist and acrylic coating (ifused) from the end of the remaining copper pattern.

3. Bend a small "U" in one end of a small gauge jumper wire andcarefully crimp it around the IC pin. Solder the IC connection.

4. Route the jumper wire along the path of the out-away copperpattern and let it overlap the previously scraped end of the goodcopper pattern. Solder the overlapped area and clip off anyexcess jumper wire.

At Other ConnectionsUse the following technique to repair the defective copper patternat connections other than IC Pins. This technique involves theinstallation of a jumper wire on the component side of the circuitboard.

1. Remove the defective copper pattern with a sharp knife.Remove at least 1/4 inch of copper, to ensure that a hazardouscondition will not exist if the jumper wire opens.

2. Trace along the copper pattern from both sides of the patternbreak and locate the nearest component that is directlyconnected to the affected copper pattern.

3. Connect insulated 20-gauge jumper wire from the lead of thenearest component on one side of the pattern break to the leadof the nearest component on the other side.Carefully crimp and solder the connections.CAUTION: Be sure the insulated jumper wire is dressed so theit does not touch components or sharp edges.

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LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

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SPECIFICATIONNOTE : Specifications and others are subject to change without notice for improvement.

4. General specificationItem Specification Remark

Broadcasting system PAL-BG, DTV:DVB-T

Available Channel 1) VHF : 00~12

2) UHF : 20~75

3) CATV : 02~44

4) DTV : 06~12, 27~69

Tuner IF 1) PAL : 38.90MHz(Picture),

34.40MHz(Sound)

2) DVB-T : 36.125MHz

Input Voltage AC 100~240V, 50/60Hz

Screen Size 42 inch Wide (1920 x 1080)

47 inch Wide (1920 x 1080)

52 inch Wide (1920 x 1080)

Aspect Ratio 16:9

Module LC420WUE-SAB1 42LG60FD-AB

LC470WUE-SAB1 47LG60FD-AB

LC420WUF-SAB1 42LG65YD-AA

LC470WUF-SAB1 47LG65YD-AC

LK520D3LZ9X 52LG65YD-AC

LC420WUF-SSA 42LG61YD-AC

LC470WUF-SAT1 47LG61YD-AC

Operating Environment 1) Temp : 0 ~ 40 deg LGE Spec

2) Humidity : ~ 80 %

Storage Environment 1) Temp : -20 ~ 60 deg

2) Humidity : ~ 85 %

1. Application rangeThis specification is applied to the LCD TV used LB81B/Cchassis.

2. Requirement for TestEach part is tested as below without special appointment.

1) Temperature : 25±5ºC (77±9ºF), CST : 40±5ºC2) Relative Humidity : 65±10%3) Power Voltage : Standard input voltage(100~240V@50/60Hz)

* Standard Voltage of each products is marked by models.4) Specification and performance of each parts are followed

each drawing and specif ication by part number inaccordance with BOM.

5) The receiver must be operated for about 20 minutes prior tothe adjustment.

3. Test method1) Performance: LGE TV test method followed 2) Demanded other specification

- Safety: CB specification- EMC: CISPR 13 specification

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- 7 - LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

5. Chrominance & Luminance Specification5-1. 42LG65YD-AC

5-2. 47LG65YD-AC

No Item Min Typ Max Unit Remark

1. White peak brightness 400 500 cd/m2

2. Contrast ratio cd/m2 N/A

3. Brightness uniformity 70 % Full white

4. Color coordinate RED X Typ. 0.640 Typ. Color coordinate

Y -0.03 0.335 +0.03

GREEN X 0.289

Y 0.610

BLUE X 0.144

Y 0.066

WHITE X 0.279

Y 0.292

5. Color coordinate uniformity N/A

6. Contrast ratio 1000 1400 All mode execpt RGB/HDMI-PC

(With PWM Dimiming)

RGB/HDMI-PC

(Without PWM Dimining)

7. Color Distortion, DG TBD %

8. Color Distortion, DP TBD deg

9. Color S/N, AM/FM TBD dB

10. Color Killer Sensitivity TBD dBm

No Item Min Typ Max Unit Remark

1. White peak brightness 400 500 cd/m2

2. Contrast ratio cd/m2 N/A

3. Brightness uniformity 70 % Full white

4. Color coordinate RED X Typ. 0.638 Typ. Color coordinate

Y -0.03 0.335 +0.03

GREEN X 0.289

Y 0.609

BLUE X 0.145

Y 0.063

WHITE X 0.279

Y 0.292

5. Color coordinate uniformity N/A

6. Contrast ratio 900 1300 All mode execpt RGB/HDMI-PC

(With PWM Dimiming)

RGB/HDMI-PC

(Without PWM Dimining)

7. Color Distortion, DG TBD %

8. Color Distortion, DP TBD deg

9. Color S/N, AM/FM TBD dB

10. Color Killer Sensitivity TBD dBm

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5-3. 52LG65YD-AC

No Item Min Typ Max Unit Remark

1. White peak brightness 360 450 cd/m2

2. Contrast ratio cd/m2 N/A

3. Brightness uniformity 70 % Full white

4. Color coordinate RED X Typ. 0.640 Typ. Color coordinate

Y -0.03 0.330 +0.03

GREEN X 0.280

Y 0.600

BLUE X 0.150

Y 0.060

WHITE X 0.272

Y 0.277

5. Color coordinate uniformity N/A

6. Contrast ratio All mode execpt RGB/HDMI-PC

(With PWM Dimiming)

RGB/HDMI-PC

(Without PWM Dimining)

7. Color Distortion, DG TBD %

8. Color Distortion, DP TBD deg

9. Color S/N, AM/FM TBD dB

10. Color Killer Sensitivity TBD dBm

5-4. 42LG61YD-AC

No Item Min Typ Max Unit Remark

1. White peak brightness 360 450 cd/m2

2. Contrast ratio cd/m2 N/A

3. Brightness uniformity 70 % Full white

4. Color coordinate RED X Typ. 0.640 Typ. Color coordinate

Y -0.03 0.335 +0.03

GREEN X 0.289

Y 0.610

BLUE X 0.144

Y 0.066

WHITE X 0.279

Y 0.292

5. Color coordinate uniformity N/A

6. Contrast ratio 1000 1400 All mode execpt RGB/HDMI-PC

(800) (1000) (With PWM Dimiming)

RGB/HDMI-PC

(Without PWM Dimining)

7. Color Distortion, DG TBD %

8. Color Distortion, DP TBD deg

9. Color S/N, AM/FM TBD dB

10. Color Killer Sensitivity TBD dBm

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5-5. 47LG61YD-AC

No Item Min Typ Max Unit Remark

1. White peak brightness 360 450 cd/m2

2. Contrast ratio cd/m2 N/A

3. Brightness uniformity 70 % Full white

4. Color coordinate RED X Typ. 0.638 Typ. Color coordinate

Y -0.03 0.335 +0.03

GREEN X 0.289

Y 0.610

BLUE X 0.145

Y 0.063

WHITE X 0.279

Y 0.292

5. Color coordinate uniformity N/A

6. Contrast ratio 900 1300 All mode execpt RGB/HDMI-PC

(With PWM Dimiming)

RGB/HDMI-PC

(Without PWM Dimining)

7. Color Distortion, DG TBD %

8. Color Distortion, DP TBD deg

9. Color S/N, AM/FM TBD dB

10. Color Killer Sensitivity TBD dBm

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7. RGB PC INPUTNo Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark

1 720*400 31.468 70.08 28.321

2 640*480 31.469 59.94 25.17 VESA Input 848*480 60Hz, 852*480 60Hz

=> 640*480 60Hz Display

3 800*600 37.879 60.31 40.00 VESA

4 1024*768 48.363 60.00 65.00 VESA(XGA)

5 1280*768 47.78 59.87 79.5 WXGA

6 1360*768 47.72 59.8 84.75 WXGA

7 1366*768 47.56 59.6 84.75 WXGA

8 1280*1024 63.595 60.0 108.875 SXGA FHD Model only

9 1920*1080 66.647 59.988 138.625 WUXGA FHD Model only

6. Component Video Input (Y, CB/PB, CR/PR)

NoSpecification

RemarkResolution H-freq(kHz) V-freq(Hz)

1 720x480 15.73 59.94 SDTV, DVD 480i

2 720x480 15.75 60 SDTV, DVD 480i

3 720x480 31.47 59.94 SDTV 480p

4 720X480 31.5 60 SDTV 480p

5 720x576 15.625 50 SDTV, DVD 576i

6 720x576 31.25 50 SDTV 576p

7 1280x720 44.96 59.94 HDTV 720p

8 1280x720 45 60.36 HDTV 720p

9 1280x720 37.5 50 HDTV 720p

10 1920x1080 28.125 50 HDTV 1080i

11 1920x1080 33.75 60 HDTV 1080i

12 1920x1080 33.72 59.94 HDTV 1080i

13 1920x1080 56.25 50 HDTV 1080p

14 1920x1080 67.433 59.94 HDTV 1080p

15 1920x1080 67.5 60 HDTV 1080p

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8. HDMI Input (PC/DTV)No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark

PC

1 720*400 31.468 70.08 28.321 HDCP

2 640*480 31.469 59.94 25.17 VESA HDCP

3 800*600 37.879 60.31 40.00 VESA HDCP

4 1024*768 48.363 60.00 65.00

5 1280*768 47.78 59.87 79.5 WXGA HDCP

6 1360*768 47.72 59.8 84.75 WXGA HDCP

7 1366*768 47.56 59.6 84.75 WXGA HDCP

8 1280*1024 63.595 60.0 108.875 SXGA FHD Model only, HDCP

9 1920*1080 66.647 59.988 138.625 WUXGA FHD Model only, HDCP

DTV

1 720*480 31.47 59.94 27.00 SDTV 480P(4:3)

2 720*480 31.50 60 27.027 SDTV 480P(4:3)

3 640*480 31.469 59.94 25.175 SDTV 480P(4:3)

4 640*480 31.469 60.00 25.20 SDTV 480P(4:3)

5 720*480 31.47 59.94 27.000 SDTV 480P(16:9)

6 720*480 31.50 60.00 27.027 SDTV 480P(16:9)

7 720*576 31.25 50.00 27.000 SDTV 576P

8 1280*720 37.50 50.00 74.176 HDTV 720P HDCP

9 1280*720 44.96 59.94 74.176 HDTV 720P HDCP

10 1280*720 45.00 60.00 74.250 HDTV 720P

11 1920*1080 33.72 59.94 74.176 HDTV 1080I HDCP

12 1920*1080 33.75 60.00 74.250 HDTV 1080I HDCP

13 1920*1080 28.125 50.00 74.250 HDTV 1080I 50 Hz HDCP

14 1920*1080 27.000 24.00 74.250 HDTV 1080P 24Hz HDCP

15 1920*1080 56.250 50 148.500 HDTV 1080P 50Hz HDCP

16 1920*1080 67.433 59.94 148.352 HDTV 1080P HDCP

17 1920*1080 67.500 60 148.500 HDTV 1080P HDCP

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ADJUSTMENT INSTRUCTION

1. Application RangeThis specification sheet is applied to all of the LCD TV withLB81C chassis.

2. Designation1) The adjustment is according to the order which is

designated and which must be followed, according to theplan which can be changed only on agreeing.

2) Power Adjustment: Free Voltage3) Magnetic Field Condition: Nil.4) Input signal Unit: Product Specification Standard5) Reserve after operation: Above 5 Minutes (Heat Run)

Temperature : at 25±5ºC Relative humidity : 65±10%Input voltage : 220V, 60Hz

6) Adjustment equipments: Color Analyzer (CA-210 or CA-110), Pattern Generator (MSPG-925L or Equivalent), DDCAdjustment Jig equipment, SVC remote controller

7) Don’t push The “IN STOP KEY” after completing thefunction inspection.

3. Main PCB check process* APC - After Manual-Insult, executing APC

* Download 1) Execute ISP program “Mstar ISP Utility” and then click

“Config” tab.2) Set as below, and then click “Auto Detect” and check “OK”

message. If display “Error”, Check connect computer, jig,and set.

3) Click “Connect” tab. If display “Can’t”, Check connectcomputer, jig, and set.

4) Click “Read” tab, and then load download file(XXXX.bin) byclicking “Read”.

5. Click “Auto” tab and set as below6. Click “Run”.7. After downloading, check “OK” message.

* USB DOWNLOAD1) Put the USB Stick to the USB socket

2) Automatically detecting update file in USB Stick- If your downloaded program version in USB Stick is Low,

it didn’t work. But your downloaded version is High, USBdata is automatically detecting

3) Show the message “Copying files from memory”

4) Updating is staring.

5) Fishing the version uploading, you have to put USB stickand “AC Power” off.

6) After putting “AC Power” on and check updated version onyour TV.

USB

(1) (3)

(2) OK

Please Check Speed :To us speed between from 200 KHzto 400 KHz

(4)

filexxx.bin

(5)

(7) ........ OK

(6)

filexxx.bin

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* After downloading, have to adjust Tool Option again.1) Push "IN-START" key in service remote controller 2) Select "MODEL SELECT" and Push “OK” button.3) Go To “INCH” and choice proper inch.4) TV power turn off and on.5) Completed selecting Tool option

3.1. ADC Process (1) PC input ADC

1) Auto RGB Gain/Offset Adjustment- Convert to PC in Input-source- Signal equipment displays

Output Voltage : 700 mVp-pImpress Resolution XGA (1024 x 768 @ 60Hz) Model : 60 in Pattern GeneratorPattern : 65 in Pattern Generator (MSPG-925 Series,MPSG-1025D) - 7 color bar.[gray pattern that left & right is black and center iswhite signal(Refer below picture)]

- Adjust by commanding AUTO_COLOR_ADJUST.

2) Confirmation- We confirm whether “0xAA (RGB)” address of

EEPROM “0xA2” is “0xAA” or not. - If “0xAA (RGB)” address of EEPROM “0xA2” isn’t

“0xAA”, we adjust once more- We can confirm the ADC values from “0xA4~0XA9

(RGB)” addresses in a page “0xA2”

* Manual ADC process using Service Remocon. Afterenter Service Mode by pushing “ADJ” key,execute “ADC Adjust” by pushing “G” key at “ADCCALIBRATION: RGB-PC”.

(2) COMPONENT input ADC 1) Component Gain/Offset Adjustment

- Convert to Component in Input-source- Signal equipment displays

Impress Resolution 480iMODEL : 209 in Pattern Generator(480i Mode)Pattern : 65 in Pattern Generator (MSPG-925 Series,MPSG-1025D) - 7 color bar.

Impress Resolution 1080iModel : 223 in Pattern Generator(1080i Mode)Pattern: 65 in Pattern Generator (MSPG-925 Series,MPSG-1025D) - 7 color bar.

- Adjust by commanding AUTO_COLOR_ADJUST.

2) Confirmation- We confirm whether “0xB3 (480i)/0xBC (1080i)”

address of EEPROM “0xA2” is “0xAA” or not.- If “0xB3 (480i)/0xBC(1080i)” address of EEPROM

“0xA2” isn’t “0xAA”, we adjust once more.- We can confirm the ADC values from “0xAD~0XB2

(480i)/0XB6~BB (1080i)” addresses in a page “0xA2”.

* Manual ADC process using Service Remocon. Afterenter Service Mode by pushing “ADJ” key, execute “ADCAdjust” by pushing “G” key at “ADC CALIBRATION :COMPONENT”.

Impress Resolution 480i

Impress Resolution 1080i

3.2. Function Check(1) Check display and sound

- Check Input and Signal items. (cf. work instructions) 1) TV2) AV 3) COMPONENT (480i)4) RGB (PC : 1024 x 768 @ 60hz)5) HDMI6) PC Audio In * Display and Sound check is executed by Remote

controller.

<Fig. 1> Adjustment pattern(PC)

Page 14: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

4. Total Assembly line process4.1. Adjustment Preparation

(1) W/B Equipment conditionCA210: CH 9, Test signal: Inner pattern (85IRE)

(2) Above 5 minutes H/run in the inner pattern. (“power on”key of adjust remote control)

(3) 15 Pin D-Sub Jack is connected to the AUTO W/BEQUIPMENT.

(4) Adjust Process will start by execute I2C Command (Innerpattern (0xF3, 0xFF).

(5) Adjust Process will finish by execute I2C Command (Innerpattern (Inner pattern (0xF3,0x00)).

** Caution ** Color Temperature: COOL, Medium, WarmOne of R Gain/G Gain/ B Gain should be kept on 0xC0, andadjust other two lower than C0.(when R/G/B Gain are all C0, it is the FULL Dynamic Rangeof Module)

* Manual W/B process using adjusts Remote control. - After enter Service Mode by pushing “ADJ” key,- Enter White Pattern off of service mode, and change off

---> on.- Enter “W/B ADJUST” by pushing “G” key at “3.W/B

ADJUST”.- The default value of RGB-GAIN is 192 at cool, Medium,

Warm(There is a difference between picture image and set)

* After done all adjustments, Press “In-start” button andcompare Tool option and Area option value with its BOM, if itis correctly same then unplug the AC cable.If it is not same, then correct it same with BOM and unplugAC cable.For correct it to the model’s module from factory JIG model.

* Don’t push The “IN STOP KEY” after completing the functioninspection.

4.2. DPM operation confirmation(Only Apply for MNT Model)

Check if Power LED Color and Power Consumption operateas standard. - Set Input to RGB and connect D-sub cable to set- Measurement Condition: (100-240V@ 50/60Hz)- Confirm DPM operation at the state of screen without Signal

4.3. DDC EDID Write (RGB 128Byte)- Connect D-sub signal cable to D-sub Jack.- Write EDID Data to EEPROM(24C02) by using DDC2B

protocol.- Check whether written EDID data is correct or not.

4.4. DDC EDID Write (HDMI 256Byte) In case of 2008 year new model for Australia and Taiwanwhich is developed with Mstar scaler, Manufacture gave nouse for downlad of EDID for HDMI 1/2/3/4 because HDMIEDID data is in the Application Program.

4.5. LB81C EDID Data (42LG60FD-AA, 47LG60FD-AA, 42LG65YD-AC, 47LG65YD-AA. 52LG65YD-AA, 42LG61YD-AC, 47LG61YD-AC)No USE the EDID data of Digital data(HDMI 1, 2, 3, 4) andAnalog EDID data (RGB) As EDID data is recorded in theMstar (Main IC).

4.5.1 Analog data 128Byte(2Bi) - Not USE

EDID block 0, Bytes 0-127[00H-7FH]Block Type : EDID 1.3

4.5.2 Digital data(HDMI-1) 256Byte

EDID block 0, Bytes 0-127[00H-7FH]Block Type : EDID 1.3

- 14 - LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

Color Cool 11,000 ºK X=0.276(±0.002) <Test Signal>

Temperature Y=0.283(±0.002) Inner patern

Medium 9,300 ºK X=0.285(±0.002) (216gray,85IRE)

Y=0.293(±0.002)

Warm 6,500 ºK X=0.313(±0.002)

Y=0.329(±0.002)

0 1 2 3 4 5 6 7 8 9 A B C D E F0 00 FF FF FF FF FF FF 00 1E 6D FB 9C 01 01 01 0110 0A 12 01 03 01 46 27 78 EA D9 B0 A3 57 49 9C 2520 11 49 4B A5 4E 00 31 40 45 40 61 40 81 80 01 0130 01 01 D1 C0 01 01 1A 36 80 A0 70 38 1F 40 30 2040 35 00 E8 26 32 00 00 1A 1B 21 50 A0 51 00 1E 3050 48 88 35 00 BC 86 21 00 00 1C 00 00 00 FD 00 3960 4B 1F 54 12 00 0A 20 20 20 20 20 20 00 00 00 FC70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 00 E4

0 1 2 3 4 5 6 7 8 9 A B C D E F0 00 FF FF FF FF FF FF 00 1E 6D F 9C 01 01 01 0110 0A 12 01 03 80 46 27 78 EA D9 B0 A3 57 49 9C 2520 11 49 4B A1 0C 00 31 40 45 40 61 40 81 80 01 0130 01 01 D1 C0 01 01 1A 36 80 A0 70 38 1F 40 30 2040 35 00 E8 26 32 00 00 1A 1B 21 50 A0 51 00 1E 3050 48 88 35 00 BC 86 21 00 00 1C 00 00 00 FD 00 3960 4B 1F 54 12 00 0A 20 20 20 20 20 20 00 00 00 FC70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 A9

0 1 2 3 4 5 6 7 8 9 A B C D E F0 02 03 23 F1 4E 81 02 03 15 12 13 04 14 05 20 2110 22 1F 10 23 15 07 50 83 01 00 00 67 03 0C 00 1020 00 B8 2D 01 1D 00 80 51 D0 1C 20 40 80 35 00 BC30 88 21 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 9640 00 13 8E 21 00 00 18 02 3A 80 18 71 38 2D 40 5850 2C 45 00 06 44 21 00 00 1E 01 1D 80 18 71 1C 1660 20 58 2C 25 00 C4 8E 21 00 00 9E 4E 1F 00 80 5170 00 1E 30 40 80 37 00 BC 88 21 00 00 18 00 00 DF

Page 15: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

4.5.3 Digital data(HDMI-2) 256Byte - Not USEEDID Block 0, Byte 0-127[00H-7FH]Block Type : EDID 1.3

EDID block 1, Bytes 128-255[80H- FFH]Block Type : CEA EDID Timing Extension Version 3.

4.5.4 Digital data(HDMI-3) 256Byte - Not USEEDID Block 0, Byte 0-127[00H-7FH]Block Type : EDID 1.3

EDID block 1, Bytes 128-255[80H- FFH]Block Type : CEA EDID Timing Extension Version 3.

4.5.5 Digital data(HDMI-4) 256Byte - Not USEEDID Block 0, Byte 0-127[00H-7FH]Block Type : EDID 1.3

EDID block 1, Bytes 128-255[80H- FFH]Block Type : CEA EDID Timing Extension Version 3.

1) All Data : HEXA Value2) Changeable Data :

*: Serial No : Controlled / Data:01**: Month : Controlled / Data:00***:Year : Controlled****:Check sum

- 15 - LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

0 1 2 3 4 5 6 7 8 9 A B C D E F0 00 FF FF FF FF FF FF 00 1E 6D FC 9C 01 01 01 01

10 0A 12 01 03 80 46 27 78 EA D9 B0 A3 57 49 9C 2520 11 49 4B A1 0C 00 31 40 45 40 61 40 81 80 01 0130 01 01 D1 C0 01 01 1A 36 80 A0 70 38 1F 40 30 2040 35 00 E8 26 32 00 00 1A 1B 21 50 A0 51 00 1E 3050 48 88 35 00 BC 86 21 00 00 1C 00 00 00 FD 00 3960 4B 1F 54 12 00 0A 20 20 20 20 20 20 00 00 00 FC70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 A9

0 1 2 3 4 5 6 7 8 9 A B C D E F0 02 03 23 F1 4E 81 02 03 15 12 13 04 14 05 20 21

10 22 1F 10 23 15 07 50 83 01 00 00 67 03 0C 00 2020 00 B0 2D 01 1D 00 80 51 D0 1C 20 40 80 35 00 BC30 88 21 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 9640 00 13 8E 21 00 00 18 02 3A 80 18 71 38 2D 40 5850 2C 45 00 06 44 21 00 00 1E 01 1D 80 18 71 1C 1660 20 58 2C 25 00 C4 8E 21 00 00 9E 4E 1F 00 80 5170 00 1E 30 40 80 37 00 BC 88 21 00 00 18 00 00 CF

0 1 2 3 4 5 6 7 8 9 A B C D E F0 00 FF FF FF FF FF FF 00 1E 6D FC 9C 01 01 01 01

10 0A 12 01 03 80 46 27 78 EA D9 B0 A3 57 49 9C 2520 11 49 4B A1 0C 00 31 40 45 40 61 40 81 80 01 0130 01 01 D1 C0 01 01 1A 36 80 A0 70 38 1F 40 30 2040 35 00 E8 26 32 00 00 1A 1B 21 50 A0 51 00 1E 3050 48 88 35 00 BC 86 21 00 00 1C 00 00 00 FD 00 3960 4B 1F 54 12 00 0A 20 20 20 20 20 20 00 00 00 FC70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 A9

0 1 2 3 4 5 6 7 8 9 A B C D E F0 02 03 23 F1 4E 81 02 03 15 12 13 04 14 05 20 21

10 22 1F 10 23 15 07 50 83 01 00 00 67 03 0C 00 3020 00 B0 2D 01 1D 00 80 51 D0 1C 20 40 80 35 00 BC30 88 21 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 9640 00 13 8E 21 00 00 18 02 3A 80 18 71 38 2D 40 5850 2C 45 00 06 44 21 00 00 1E 01 1D 80 18 71 1C 1660 20 58 2C 25 00 C4 8E 21 00 00 9E 4E 1F 00 80 5170 00 1E 30 40 80 37 00 BC 88 21 00 00 18 00 00 BF

0 1 2 3 4 5 6 7 8 9 A B C D E F0 00 FF FF FF FF FF FF 00 1E 6D FC 9C 01 01 01 0110 0A 12 01 03 80 46 27 78 EA D9 B0 A3 57 49 9C 2520 11 49 4B A1 0C 00 31 40 45 40 61 40 81 80 01 0130 01 01 D1 C0 01 01 1A 36 80 A0 70 38 1F 40 30 2040 35 00 E8 15 21 00 00 1A 1B 21 50 A0 51 00 1E 3050 48 88 35 00 BC 86 21 00 00 1C 00 00 00 FD 00 3960 4B 1F 54 12 00 0A 20 20 20 20 20 20 00 00 00 FC70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 A9

0 1 2 3 4 5 6 7 8 9 A B C D E F0 02 03 23 F1 4E 81 02 03 15 12 13 04 14 05 20 2110 22 1F 10 23 15 07 50 83 01 00 00 67 03 0C 00 4020 00 B8 2D 01 1D 00 80 51 D0 1C 20 40 80 35 00 BC30 88 21 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 9640 00 13 8E 21 00 00 18 02 3A 80 18 71 38 2D 40 5850 2C 45 00 06 44 21 00 00 1E 01 1D 80 18 71 1C 1660 20 58 1C 14 00 C4 8E 21 00 00 9E 4E 1F 00 80 5170 00 1E 30 40 80 37 00 BC 88 21 00 00 18 00 00 AF

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4.6. HDCP (High-Bandwidth Digital Contents Protection)

SETTING (Scaler : Mstar)Because HDCP keyis built in HDCP exclusive EEPROM,Download progress is not needed.

HDCP-KEY0:0x8089 38 AE 0D ED 40 E6 BB FA 4E DE 51 FB 8E D9 AA34 A8 C4 EA D8 6C DC 5C 91 5C B1 A6 13 2B 8B 8BF7 46 CC 1C 88 20 A3 27 0E E1 28 84 89 39 A3 E236 86 CE 67 EB A0 F2 35 6B 86 F5 21 71 95 8A 77A1 28 77 97 D3 7B EF 5C 15 48 AA 9E 97 39 CD 9840 5E 68 56 66 EF C1 3C E1 8F 2A 82 DE 8F 52 CCA8 1F 37 D9 D4 C6 24 16 7E 42 FF 57 CD 6B E0 8600 1A F1 19 5A AF 37 97 86 BA 83 29 FE 41 A8 D5

A1:0x00F4 73 43 03 23 22 C5 28 96 9E 35 0D 67 A8 8B DD7A 89 38 E0 94 F0 FF F5 8F F3 4E 5C 82 09 F3 97EB 01 52 EC D8 98 5C 4F 43 2E E7 9F F5 85 6D 15B1 83 20 F8 5E D0 33 4F F0 C1 8F 65 77 3D 31 B2FB A1 6E CA A6 D3 A2 35 1D 16 41 C3 89 86 98 788E 3E C1 64 01 79 05 21 47 AF 6A 6F 5B E1 4D 2B2F CC 18 8E 42 DC 9A F8 3C D0 D0 57 04 FB 14 428C 54 9D A9 06 EB E7 48 E2 29 EF 7E FD F6 45 12AC E4 BC 45 67 A3 9B 65 A1 0E ED 1A 84 AD 49 87A2 77 3F 11 A7 1B D1 7F 25 36 6C 6F D3 DF 25 D0FB

4.7 Outgoing condition Configuration- fffff and make ship condition- When pressing IN-STOP key by Service remocontrol, Red

LED are blinked alternatively. And then Automatically turnoff. (Must not AC power OFF during blinking)

4.8 Internal pressureConfirm whether is normal or not when between powerboard's ac block and GND is impacked on 1.5kV(dc) or2.2kV(dc) for one second

5. Adjustment Command

5.1. I2C(100K BPS)5.2. COMMUNICATION START

# Until ACK BIT goes LOW, Repeat it.

5.3. Command formCommand form use DDC2AB standard communicationprotocol.

a. LEN : DATA BYTE number to sendb. CMD : Command language theat monitor executes.c. VAL : FOS DATAd. CS : Dada’s CHECKSUM that transmite. DELAY : 50Msf. A : Acknowledge

- 16 - LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

START 6E A STOP 50Ms

START 6E A 50 A A A A A A A30 00 CS STOPLEN CMD VAL

Page 17: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

5.4. Adjustment Commands(LENGTH=84) 5.5. EEPROM DATA READ(1) Signal TABLE

(2) Command Set

* Purpose : To read(84h) the appointment Address ofE2PROM by 128(80h)-byte

5.6. E2PROM Data Write(1) Signal TABLE

LEN : 84h+BytesCMD : 8EhADH : E2PROM Slave Address(A0,A2,A4,A6,A8), Not 00h

(Reserved by Buffer To EEPROM)ADL : E2PROM Sub Address(00~FF)Data : Write data

(2) Command Set

* Purpose1) EDID write : 16-byte by 16-byte, 8 order (128-byte)

write(TO “00 – 7F” of “EEPROM Page A4”).2) FOS Default write : 16-mode data (HFh, HFl, VF, STD,

HP, VP, Clk, ClkPh, PhFine) write3) Random Data write : write the appointment Address of

E2PROM.

5.7. VRAM Read- Send CMD(70h) to read Video RAM value from MICOM And

save its value to 128-Bytes Buffer(Common Buffer for theuse of EDID)

- Delay 500ms (Time to Wait and Read Video RAM from

MICOM)- Be transmitted the contents of MICOM’s 128-bytes Buffer to

PC. (128th Data is the CheckSum of 127-bytes data : That’s OK if the value of adding 128-bytes Data is Zero)

- 17 - LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

Adjustment Contents CMD(hex) ADR VAL[HEX] Description

FACTORY ON E0 00 00 Factory mode on

FACTORY OFF E2 00 00 Factory mode off

EEPROM ALL INIT. E4 00 00 EEPROM All clear

EEPROM Read E7 00 00 EEPROM Read

EEPROM Write E8 00 data EEPROM Write by

some values

COLOR SAVE EB 00 00 Color Save

(R/G/B cutoff, Drive,

Contrast, Bright)

H POSITION 20 00 00 – 64 They have different

V POSITION 30 00 00 – 64 range each mode,

CLOCK 90 00 00 – 64 FOS Adjustment

PHASE 92 00 00 – 64

R DRIVE 16 00:cool 00 – 80 Drive adjustment

01:medium

02:warm

G DRIVE 18 00 :cool 00 – 80

01:medium

02:warm

B DRIVE 1A 00:cool 00 – 80

01:medium

02:warm

R CUTOFF 80 00 00 – 7F Offset adjustment

G CUTOFF 82 00 00 – 7F

B CUTOFF 84 00 00 – 7F

BRIGHT 10 00 00 – 3F Bright adjustment

CONTRAST 12 00 00 - 64 Luminance adjustment

AUTO_COLOR_ F1 00 02 Auto COLOR

ADJUST Adjustment

CHANGE_COLOR_ F2 00 0,1,2,3 0: Cool

TEMP 1: Medium

2: Warm

3: User

White Pattern F3 00 00,FF 00: White pattern off

FF: White pattern on

AUTO_ F4 00 0,10,20,30, 0 : TV

INPUTCHANGE 40,60,90 10 : DTV

20 : SCART1

30 : SCART2

40 : Component

60 : RGB

90 : HDMI

128 Bytes

Delay 100ms

EEPROM READ E7 A0 0 0-Page 0~7F Read

80 0-Page 80~FF Read

A2 0 1-Page 0~7F Read

80 1-Page 80~FF Read

A4 0 2-Page 0~7F Read

80 2-Page 80~FF Read

A6 0 3-Page 0~7F Read

80 3-Page 80~FF Read

Adjustment item CMD(hex) ADH(hex) ADL(hex) Details

EEPROM WRITE E8 94 16-Byte Write

84+n n-byte Write

Adjustment item CMD(hex) LEN Remark

70 00 00

6F A AData 1START Data 128 STOPNACS...

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LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

- 18 -

1. TV/CATV doesn’t display

2. DTV doesn’t display

TROUBLESHOOTING

Check TU401 Pin15(Video output), Pin16(Sound output)

Can you see the normal sign al?

Check th e output of TR(Q503).Can you see the normal waveform?

Check th e output of Main IC(IC100).Especially you should check

The H,V sync and c lock.Can you see the normal waveform?

YES

YES

NO Could you measu re voltag e of TU800 & IIC lines?

Are they all normal?

YES

NO You should ch eck p ower lin e & IIC li nes.

YES

You should rep lace TUNER.

NOYou should decid e to rep lace TR(Q503) or not.

NOAfter ch eckin g the Power of Main IC(IC100) you

should decide to replace Main IC or not .

This bo ard has b ig problem because Main IC(IC100) have some troubles.

After checking thoro ugh ly all pa th onc e again, You should decid e to rep lace Main Board or not.

Check th e output data o f TU800 Pin 24~34Can you see the normal sign al?

NO Could you measu re voltag e of TU800 & IIC lines?

Are they all normal?

NO You should ch eck p ower lin e & IIC li nes.

YES

You should rep lace TUNER.YES

Check th e output of Main IC(IC100).Especially you should check

The H,V sync and c lock.Can you see the normal waveform?

YES

NO After ch eckin g the Power of Main IC(IC100) you should decide to replace Main IC or not .

This bo ard has b ig problem because Main IC(IC100) have some troubles.

After checking thoro ugh ly all pa th onc e again, You should decid e to rep lace Main Board or not.

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LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

- 19 -

3. AV 1/2/3 doesn’t display

Check J6 00,J600,JK607,JK618Can you see the normal waveform?

Check th e input o f Video switch (IC700).Can you see the normal waveform?

YES

NOJ600,J601 or SIDE AV may have problem.

Replace th is Jack o r SIDE AV.

NOAfter ch eckin g the Power of AV switch you should decide to replace AV switch or not.

Check th e output of Main IC(IC100).Especially you should check

The H,V sync and c lock.Can you see the normal waveform?

YES

NO After ch eckin g the Power of Main IC(IC100) you should decide to replace Main IC or not .

This bo ard has b ig problem because Main IC(IC100) have some troubles.

After checking thoro ugh ly all pa th onc e again, You should decid e to rep lace Main Board or not.

YES

4. Component doesn’t display

Check J7 01.Can you see the normal waveform?

Check th e input o f Compo nent Audio switch (IC1001) ,

Can you see the normal waveform?

Check th e output of Component Audio switch (IC1001) ,

Can you see the normal waveform?

YES

YES

YES

NOJ701

may have problem. Rep lace th is Jack.

NO After checking the Power of compone nt Audio switch, y ou should decide to replace component

Audio s witch or not.

NO After checking the Power of compone nt Audio switch y ou should decide to replace component

Audio s witch or not.

Check th e output of Main IC(IC100).Especially you should check

The H,V sync and c lock.Can you see the normal waveform?

YES

NO After ch eckin g the Power of Main IC(IC100) you should decide to replace Main IC or not .

This bo ard has b ig problem because Main IC(IC100) have some troubles.

After checking thoro ugh ly all pa th onc e again, You should decid e to rep lace Main Board or not.

Page 20: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

- 20 -

5. RGB PC doesn’t display

Check J7 03 ,Can you see the normal waveform?

Check th e input o f RGB Audio switch (IC1001) ,

Can you see the normal waveform?

Check th e output of RGB Audio switch (IC1001) ,

Can you see the normal waveform?

YES

YES

YES

NOJ703

may have problem. Rep lace th is Jack.

NO After ch eckin g the Power of RGB Audio sw itc h, you should decide to replace RGB Audio s witch

or not.

NO After ch eckin g the Power of RGB Audio sw itc h you should decide to replace RGB Audio s witch

or not.

Check th e output of Main IC(IC100).Especially you should check

The H,V sync and c lock.Can you see the normal waveform?

YES

NO After ch eckin g the Power of Main IC(IC100) you should decide to replace Main IC or not .

This bo ard has b ig problem because Main IC(IC100) have some troubles.

After checking thoro ugh ly all pa th onc e again, You should decid e to rep lace Main Board or not.

Check th e input o f RGB Video switch (IC700) ,

Can you see the normal waveform?

NO After ch eckin g the Power of RGB Vid eo switc h, you should decide to replace RGB Video switch

or not.

YES

Page 21: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

- 21 - LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

6. HDMI doesn’t display

Check input c onnect J900 , J901, J902Can you see the normal waveform?

Check DDC commu nication lin es(IC900, IC901, IC903 Pin5,6)

Check th e input o f HDMI Seitch (IC902)This sign al is TMDS.

Can you see the normal waveform?

YES

YES

NOJ900 , J901, J902

may have problem. Rep lace th is Jack.

Check th e output of HDMI Switc h(IC902).Can you see the normal waveform?

YES

YES

NO

After ch eckin g the trace o f TMDS lin es and power of HDMI Switch, you should decide to replace HDMI

Switch or not .

NO

NO

After ch eckin g the Power of th is ch ip , you should decide to replace this or not.

After ch eckin g the Power of HDMI Switch y ou should decide to replace MST3361 or not.

YES

Check HDCP commu nicatio n lin es(IC902)

NOAfter ch eckin g the Power of th is ch ip , you

should decide to replace this or not.

Check th e output of Main IC(IC100).Especially you should check

The H,V sync and c lock.Can you see the normal waveform?

YES

NO After ch eckin g the Power of Main IC(IC100) you should decide to replace Main IC or not .

This bo ard has b ig problem because Main IC(IC100) have some troubles.

After checking thoro ugh ly all pa th onc e again, You should decid e to rep lace Main Board or not.

Page 22: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

LGE

Internal Use O

nlyC

opyright ©2008 LG

Electronics. Inc. A

ll right reserved. O

nly for training and service purposes- 22

-

BL

OC

K D

IAG

RA

M

Side Y/C

Rear CVBS

CVBS_Out

IN1

IN3

IN1

IN3

OUT1

Side CVBS

ANT

DVB/PAL Tuner(TDVS-H702P)

LG Innot ek

M-STAR(MST2379A/LGE7363C)

D-AMP(YDA138)

0IPRPTI030B

HeadPhone

LVDS(8Bit)

X-TAL 12Mhz6212AA2004F

TV_CVBS+(1.8Vp-p)

$0.86

Audio_L Audio_R

SIF+(96dBuV)

IN2

Air : DVB/PALïRGB/YPbYr*2ïCVBS*2ïYC*1ïL/R-IN*3ïSIFïCVBS OUT*1

R OUT

L OUT

0IMMR00141A

HeadPhone

PC(VGA)

RS232C(Debug)

LCD

USB(SW Upgrade)

CVBS0P

SIF_IN1P

SCL_D_TUSDA_D_TUTU_TS_CLKTU_TS_SYNCTU_TS_VAL

TS1_CLKTS1_SYNCTS1_VLD

IN[A2]OUT[A1]

2

3.3V1.8V

HP_OUT_L[42]HP_OUT_R[1]

OUT_P_R[8]OUT_N_R[14]

OUT_P_L[35]OUT_N_L[29]

IN_L[38] IN_R[5]

HP_DET[37]

MUTE[6]

AUOUTR0[80]AUOUTL0[79] GPIO12[45]

LVDS[177-190,194-199]

RXE/RXO

BIN[1]SOGIN[2]GIN[3]RIN[4]VS_RGB[7]HS_RGB[8]SCL/RX[33]SDA/TX[34]DM_DET[

PB_IN[11]SOY[13]Y_IN[14]PR_IN[16]AUL_IN1[70]AUR_IN1[71]

CVBS1[30]AUL_IN0[68]AUR_IN[69]

SV_C0[25]SV_Y0[26]GPIO15[48]

6612F00099A $0.27617

EAG31022001$0.185

Tx/Rx(IC603)

MAX3232CDRTx_Out

Rx_InR232C_TXD

R232C_RXD

EEPROMAT24C028N DDC_SDA/UART_Tx

DDC_SCL/UART_Rx

IR_RX[57]SAR0[201]SAR1[202]SAR2[203]SAR3[204]

EEPROM(32K)24C32

EEPROM(32K)24C32

0IMMRAL025A

ROMSCK[35]ROMSD[36]

5V

Flash(8 M*2)Flash(8 M*2)SPI_CK[171]SPI_DI[172]

SPI_DO[173]SPI_CZ[174]

EAN32213401

3.3V

KEY_CTL[1,2,3]

MP1593DN-LF0IPMG00063A

$0.46

12V

5V

Power/LIPSPower/LIPS

20îBCM : $2023îBCM : $1820îBB3 : $1223îBB3 : $18

Power

Changed 32K 512K

TU_TS_DATA[0]

2.5V

TS1_D0

SCL_A_TUSDA_A_TU

Video SW(IC500,

STMAV340)

Comp_1 YPbPr

Comp_2 YPbPr

Comp_YComp_Pb

Comp_Pr

3

3

HY5DU561622(DDR)

HY5DU561622(DDR)

2.5_DDR

HY5DU561622(DDR)

HY5DU561622(DDR)

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Internal Use O

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Side A V_3 V,LR

Rear CVBS_1V, LR

Side S_3 YC

MNT_V,LR_Out

IN1

IN3

IN1

IN3

OUT1

Comp_1 YPbPr/LR

Comp_2 YPbPr/LR

Rear AV_2 V, LR

ANT

DVB/PAL Tuner(TDVS-H702P)

LG Innot ek

M-STAR(MST2379A/LGE7363C)

$4.66

D-AMP(NTP3000)

0IPRPTI030B

LVDS(8Bit)

CLK_14.3L6AF6212AA2004F

CVBS(ATV)

$0.86

$0.0623

Audio_L Audio_R

SIF

IN2

Comp1

Comp2

Air : 8VSBCable : 256/64QAMïRGB/YPbYr*2ïCVBS*3ïYC*2ïL/R-IN*3ïSIFïCVBS OUT*1

R OUT

L OUT

HeadPhone

PC EarPhone

PC(VGA)

RS232C(Debug)

PC IN

LCD

USB(SW Upgrade)

1.8Vp-p 1.0Vp-p

96dBuV

CVBS0[31]Buffer

SIF_IN1P

SIF_IN1M

SIF_IN1P

SIFP0[51]

Buffer

[11]

TS0-7[96,97,98,99,100,101,102,103]

SCL[48]SCL[49]

MSCL

MSDA

SCLM1[59]SDAM1[60]

TPCLK[46]TPSOP[44]

TPVALID[43]nTPERR[41]

TSCLK[95]TSSYNC[105]TSVALID[104]

IN[256]OUT[255]

2

3.3V1.8V

HP_OUT_L[42]HP_OUT_R[1]

OUT_P_R[8]OUT_N_R[14]

OUT_P_L[35]OUT_N_L[29]

IN_L[38] IN_R[5]

HP_DET[37]

MUTE[6]

12VAUOUTR0[80]AUOUTL0[79] GPIO12[45]

LVDS[177-190,194-199]

RXE/RXO

BIN[1]SOGIN[2]GIN[3]RIN[4]VS_RGB[7]HS_RGB[8]SCL/RX[33]SDA/TX[34]DM_DET[

AUR_IN3[76]AUL_IN3[75]

PB_IN[11]SOY[13]Y_IN[14]PR_IN[16]AUL_IN1[70]AUR_IN1[71]

CVBS1[30]AUL_IN0[68]AUR_IN[69]

SV_C0[25]SV_Y0[26]GPIO15[48]

6630G70016A

$0.23975

6630G70017A $0.21984

6612F00099A $0.27617

6612F00099A $0.27617

EAG31022001$0.185

6612J10031A $0.25744

Tx/Rx(ICL3232)0IPRP00009A0IMX232162A

$0.32$0.4

ST-5V

Tx_Out

Rx_In

R232C_Tx

R232C_Rx

EEPROM0IMMR00014A

$0.076 DDC_SDADDC_SCL

IR_RX[57]SAR0[201]SAR1[202]SAR2[203]SAR3[204]

EEPROM(32K)24C32

EEPROM(32K)24C32

0IMMRAL025A

ROMSCK[35]ROMSD[36]

5V

$0.145- $0.76

Flash(16 M)SST25VF016B

Flash(16 M)SST25VF016B

SPI_CK[171]SPI_DI[172]

SPI_DO[173]SPI_CZ[174]

EAN32213401

$0.67

3.3V

KEY_CTL[1,2,3]

MP1593DN-LF0IPMG00063A

$0.46

12V

5V

Power/LIPSPower/LIPS

Power

Changed 32K 512K

SIF

HY5DU561622(DDR)

HY5DU561622(DDR)

2.5_DDR

HY5DU561622(DDR)

HY5DU561622(DDR)

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- 24-

LGE

Internal Use O

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MSD2379A[MSTAR]

DDC_I2C

E2PROM_I2C E2PROM

EDID / ISP

I2C MSCL / MSDA

IF_P

IF_N

SIF

TUNER_CVBS

IF_AGC

Buffer

Buffer

LPF

TS[0-7]

TS_CLK

TS_SYNC

TS_VALID

I2C MSCL / MSDA

MAIN I2C

CVBS_0

SIF

TS_DATA

Add sy nc p attern of each input/output

Add deta il bloc k diagram of VSB

Page 25: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

- 25-

LGE

Internal Use O

nlyC

opyright ©2008 LG

Electronics. Inc. A

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nly for training and service purposes

MSD2379A[MSTAR]

DDC_I2C

E2PROM_I2C E2PROM

EDID / ISP

TUNER SCL / SDA

IF_P

IF_N

SIF

TUNER_CVBS

IF_AGC

Buffer

Buffer

LPF

TS[0-7]

TS_CLK

TS_SYNC

TS_VALID

I2C MSCL / MSDA

MAIN I2C

CVBS_0

SIF

TS_DATA

Add sy nc p attern of each input/output

Add deta il bloc k diagram of VSB

Page 26: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

- 26-

LGE

Internal Use O

nlyC

opyright ©2008 LG

Electronics. Inc. A

ll right reserved. O

nly for training and service purposes Signal Video

AV

S-Video

AT_TU_V

Y/Cb/Cr_IN

Y/C IN

CVBS1

CVBS0

CVBS1

MStar[MSD2379A](From Tuner)

SVIDEO ( Y/C )

Component ( Y/Cb/Cr )

RGBRGB_IN

Component

RGB

LGDT3303 LGDT3303 TS DataDTV_IN

Add sy nc p attern of each input/output

Add deta il bl ock diagram of each Video input

Page 27: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

- 27-

LGE

Internal Use O

nlyC

opyright ©2008 LG

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nly for training and service purposes

NTP3000

MSD2379A[MSTAR]

SPEAKER Output

SIF

TS_DATA

AU_OUT0_ L/R

AV1_L/R

COMPONENT_L/R

DSUB RGB_L/R

Add sy nc p attern of each input/output

Add deta il bl ock diagram of each Audio input

Page 28: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

- 28-

LGE

Internal Use O

nlyC

opyright ©2008 LG

Electronics. Inc. A

ll right reserved. O

nly for training and service purposes

M-STAR[MSD2379

A]IR

LocalKey

57IR IN

SAR is lo w speed 6-Bits ADC in put and also for GP IO functio n use.

The I/O tol erance is 3.3V maximum for use.

The application of A/ D key, the conversion voltage for full scale of MSD1226L is 1.8V.

201SAR0

202SAR1

KEY_CTL_0

KEY_CTL_1

Page 29: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

- 29-

LGE

Internal Use O

nlyC

opyright ©2008 LG

Electronics. Inc. A

ll right reserved. O

nly for training and service purposes

Sound AmpYDA138

MSD1226L

VDDC

AVDD_ADCAVDD_SIFAVDD_AUAVDD_MemPLLAVDD_XTALVDD_LPLL

VDDPVDDQ

LGDT3303VDDAVDD

Vdd33avdd33

1

2

3

4

5

6

7

8

9

10

11

12

15V

15V

GND

5V

ACD

PWR_ON

INV_CTL

DIM

INV_BR

6.3V

GND

5V

1

2

3

4

5

6

7

8

9

10

11

15V

15V

GND

5V

NC

INV_CTL

DIM

INV_BR

GND

5V

GND

IC800MP1583DN-Z

12V

Sound Mute12V Option

Pannel23î

Outp ut Curr ent : 3AInput : 4.75V to 23VOutput : 1.22V to 21V

0.6A

0.4A

TUNERIC800MP1583DN-Z

5V

12V$0.46

265mA

IC807KIA78R05F

Outp ut Curr ent : 1AInput : 7V(Max 35V)Outp ut : 5V

$0.17

IC803AZ1117H-3.3V

IC804AZ1117H-3.3V

ST_3.3V

ST_3.3V

Flash MemoryMX25L1605AM2C

SDRAMHY57V641620ETP

IC802KD1084ADT-R

ST_1.8V

IR

IC806AZ1117H-1.8

IC805AZ1117H-3.3

1.8V

3.3V

Pannel20î

FET5203

0.4A

EEPROMAT24C32AN

EEPROMAT24C02BN

Outp ut Curr ent : 1A

Outp ut Curr ent : 1A

Outp ut Curr ent : 5A

Outp ut Curr ent : 0.6A

Outp ut Curr ent : 0.6A

274.6mA

465mA

72.4mA

148.8mA

570mA

248mA

800mA

Page 30: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

- 30-

LGE

Internal Use O

nlyC

opyright ©2008 LG

Electronics. Inc. A

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Sound AmpYDA138

MSD1226L

VDDC

AVDD_ADCAVDD_SIFAVDD_AUAVDD_MemPLLAVDD_XTALVDD_LPLL

VDDPVDDQ

MSD809VDD

VDD

1

2

3

4

5

6

7

8

9

10

11

12

15V

15V

GND

5V

ACD

PWR_ON

INV_CTL

DIM

INV_BR

6.3V

GND

5V

1

2

3

4

5

6

7

8

9

10

11

15V

15V

GND

5V

NC

INV_CTL

DIM

INV_BR

GND

5V

GND

IC800MP1583DN-Z

12V

Sound Mute12V Option

Pannel23î

Outp ut Curr ent : 3AInput : 4.75V to 23VOutput : 1.22V to 21V

0.6A

0.4A

TUNERIC800MP1583DN-Z

5V

12V$0.46

265mA

IC807KIA78R05F

Outp ut Curr ent : 1AInput : 7V(Max 35V)Outp ut : 5V

$0.17

IC803AZ1117H-3.3V

IC804AZ1117H-3.3V

ST_3.3V

ST_3.3V

Flash MemoryMX25L1605AM2C

SDRAMHY57V641620ETP

IC802KD1084ADT-R

ST_1.8V

IR

IC807AZ1117H-1.2

IC805AZ1117H-3.3

1.2V

3.3V

Pannel20î

FET5203

0.4A

EEPROMAT24C32AN

EEPROMAT24C02BN

Outp ut Curr ent : 1A

Outp ut Curr ent : 1A

Outp ut Curr ent : 5A

Outp ut Curr ent : 0.6A

Outp ut Curr ent : 0.6A

274.6mA

465mA

72.4mA

148.8mA

570mA

248mA

800mA

Page 31: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

- 31-

LGE

Internal Use O

nlyC

opyright ©2008 LG

Electronics. Inc. A

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ATSC/NTSCTUNER

I2C

MSD1226LSCLM1[59]LGDT3303

3.3V IIC

I2C_SDAI2C_SCL

SDA[5]

SCL[6]

SDAM1[60]MSCLMSDA

SCL[48]SDA[49]

5V IIC

DDC_SCK[33]DDC_SD[34]SCL/RX

SDA/TX

VGA_RXVGA_TX

EEPROM24C32

DDC_ROMSCK[35]DDC_ROMSD[36]

ROMSCKROMSD

FLASH SST25VF016B

SPI_CKSPI_DISPI_DOSPI_CZ

SPI_CK[171]SPI_DI[172]

SPI_DO[173]SPI_CZ[174]

VGAD-SUB

VGAD-SUB

EEPROM24C21A

DDC_SCLDDC_DSA

UATX1[55]UARX1[56]

SDRAM4M*16Bit

SDRAM4M*16Bit

SDRAM4M*16Bit

M2_CKEM2_MCLK

M2_A[0:11]M2_DQ[0:15]M2_DQM0M2_DQM1

CKEMCLK

AR[0:11]MDATA[0:15]DQM0DQM1CKEMCLK

AR[0:11]MDATA[16:31]DQM0DQM1

Debug Port

RXD

TXD

GND

5V

Page 32: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

- 32-

LGE

Internal Use O

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Mstar[MSD1226L]

ATSC/NTSC Tuner

LGDT 3303

MSCL/MSDAI2C_5V

4.7K

5VST

NVRAM

I2C Address

0xC2

0x1C

Mstar[MSD1226L] MX25L1605

[Serial Flash]

SCK

SDI

SDO

CSZ

SPI_CK

SPI_DI

SPI_DO

SPI_CSZ

SCLK

SI

SO

CS#

4.7K

+3.3V

DDC_ROMSCL/SDA 0xA0

Page 33: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

300200

801

400

900

540

530810

120500

570

121

560

510803

804

840

520521

830805802

EXPLOD

ED VIEW

Many electrical and m

echanical parts in this chassis have special safety-related characteristics. These partsare identified by in the Schem

atic Diagram

and EXPLOD

ED VIEW

. It is essential that these special safety parts should be replaced w

ith the same com

ponents as recomm

endedin this m

anual to prevent X-RAD

IATION

, Shock, Fire, or other Hazards.

Do not m

odify the original design without perm

ission of manufacturer.

EXPLOD

ED VIEW

Many electrical and m

echanical parts in this chassis have special safety-related characteristics. These partsare identified by in the Schem

atic Diagram

and EXPLOD

ED VIEW

. It is essential that these special safety parts should be replaced w

ith the same com

ponents as recomm

endedin this m

anual to prevent X-RAD

IATION

, Shock, Fire, or other Hazards.

Do not m

odify the original design without perm

ission of manufacturer.

EXPLOD

ED VIEW

Many electrical and m

echanical parts in this chassis have special safety-related characteristics. These partsare identified by in the Schem

atic Diagram

and EXPLOD

ED VIEW

. It is essential that these special safety parts should be replaced w

ith the same com

ponents as recomm

endedin this m

anual to prevent X-RAD

IATION

, Shock, Fire, or other Hazards.

Do not m

odify the original design without perm

ission of manufacturer.

EXPLOD

ED VIEW

Many electrical and m

echanical parts in this chassis have special safety-related characteristics. These partsare identified by in the Schem

atic Diagram

and EXPLOD

ED VIEW

. It is essential that these special safety parts should be replaced w

ith the same com

ponents as recomm

endedin this m

anual to prevent X-RAD

IATION

, Shock, Fire, or other Hazards.

Do not m

odify the original design without perm

ission of manufacturer.

IMPO

RTA

NT SA

FETY NO

TICE

Page 34: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

MS_LRCK008:H16

LED_G010:E8

SDA_EYEQ/AMP008:H16;007:AD7;010:O14

R1056 100

C139 0.047uF

C1470.1uF

R1078100

C1460.1uF

C10110uF16V3216

C117 0.047uF

R105147

RS232C_TXD

C1450.1uF

C126 2.2uF 16V

R10051M

+3.3V_VDDP_ST

C116 0.047uF

SIDE_L_IN

R1045 100

C1440.1uF

R11174.7K

SIDE_C_IN

R106247

HDMI_RX1-

R110722

C140 0.047uF

BOOSTER

R10573.3KOPT

R1106100

R1075100

MUTE008:S16

R1090100

C131 2.2uF 16V

R10821KOPT

HDMI_RX2-

R1093100

C127 2.2uF 16V

PANEL_CTL

SPI_SCK

AC_DET

SCL_A_TU

KEY2010:H13

HDMI_RX0+

A_DIM001:B6;009:H14

C114 0.047uF

HDMI_RX0-

SYSTEM_SDA001:S5;001:AB11

LED_R010:E7

EYEQ_RESET010:P9

R1097100

HDMI_CLK+

TU_RESET_N004:J11

R1003

22K

R1102100

R1068100

R1055 100

Flash_WP_1001:AC18

5V_HDMI_2

R1027 47

C130 2.2uF 16V

R1037 47

R1047100

DSUB_G

R11110

R105210KOPT

R1086100

C141 0.047uF

R106722

R1028 47

R1069100

R1079100

DSUB_B

X10012MHz

USB_CTL006:AE24

R1095100

HDMI_SDA007:AG24

R106347

R1073100

C125 2.2uF 16V

PC_L_IN

C1510.1uF

SCL_EYEQ/AMP

R101810K

R1101100

+3.3V_AVDD_DVI009:AB11

R1108100 OPT

R1074100

MS_SCK008:H16

R10161K

R1024 0

R1032 47

A_DIM 001:G12;009:H14

C120 0.047uF

C123 0.1uF

R1064 100

R1060100

C1064.7uF16V3216

C115 0.047uF

R101710K

OPT

+5V_ST

C124 2.2uF 16V

R1042 47

R1119

100

R107022

R1096100

C135 0.047uF

R10151KOPT

INV_CTL009:H14;009:K17

R1058100

R1066100

C137 0.047uF

C121 0.047uF

C1091uF25V

R108022

R11164.7K

SPI_SDI

PWM_LED 001:G12;010:P10

SIF+

R11103.3KOPT

COMP_Pr005:M17

R1092100

DDC_SDA/UART_TX

SPDIF_OUT008:C27

R1030 47

C119 0.047uFR1033 47

C129 2.2uF 16V

AUDIO_MASTER_CLK008:H22

R1009 0

R1054100

R1038 470

R1109100

SPI_SDO

COMP_Y

R1072100

+3.3V_VDDP_ST

EEPROM_WP

R11150

COMP_R

5V_HDMI_3

R1100100

DSUB_VSYNC

HDMI_RX1+007:AI23

C128 2.2uF 16V

R1022100

SYSTEM_SCL001:H28;001:AB11

PWM_DIM009:D13

DSUB_HSYNC005:R16

IR010:H10

DDC_SCL/UART_RX005:AB18

C138 1000pF

SDA_A_TU004:K16;004:L3;004:R8

R10509101%

R1046 100

RL_ON009:B5;009:E16

R10040

2012

R1094100

R1040 470

RS232C_RXD006:M22

R10121KOPT

HDMI_CLK-007:AG23

HDMI_SCL

C1480.047uF

R1059100

R11140

OPT

R1104100

C1490.047uF

SYSTEM_SDA001:H28;001:AB11

R1077100

KEY1010:H14

IC103AT24C512W-10SI-2.7

3NC

2A1

4GND

1A0

5SDA

6SCL

7WP

8VCC

R108122

PWM_LED001:B6;010:P10

R1088100

SIDE_CVBS_IN

R1084100

AMP_RST008:H22

PC_R_IN

SPI_CSN_2001:W15

DSUB_R

MODULE_SEL001:J6

C118 0.047uF

+3.3V_VDDP_ST

MS_LRCH008:H17

+3.3V_VDDP_ST

R1035 100

R1061

47

R1002

22K

R1083100

Flash_WP_2001:AD15

SDA_D_TU

SCL_D_TU003:M14;004:H13;001:AB5;001:AM5

R1021100

COMP_L

C104

0.01uF

R1039 47

C122 0.1uF

R1118100

R1043 47

R11120

HDMI_CEC

COMP_SEL005:L18;008:E6;008:O10

R1034 47

R1113

0

OPT

R1031 47

R1023 0

R1065 100

USB_DM

R108522

USB_DP006:X25

SIDE_R_IN

R1041 47

C1500.047uF

R10111K

HPD007:AF24

R1048100

R1071100

R1029 47

5V_MNT009:J15

R1044 47

SYSTEM_SCL

C142 0.047uF

SPI_CSN_1001:X18

C1020.1uF50V

COMP_Pb

R1105100 OPT

TV_CVBS+

HDMI_RX2+

5V_HDMI_1

SIDE_Y_IN

MODULE_SEL001:J12

C136 1000pF

C105

0.01uF

Q1002SC3052

E

B

C

+3.3V_VDDP_ST

C14322pF50VOPT

C13422pF50V

OPT

C11322pF50VOPT

C11222pF50VOPT

R1076390

R10870R10890

R10980R10990

MDATA[13]

LVA_1M

DQM2

LVB_0M

MDATA[22]

MADR[5]

LVB_4M

LVB_CKP

MADR[4]

MDATA[16]

CLKE

MDATA[1]

MDATA[23]

MDATA[7]

LVB_3P

LVB_2M

R1155 56

MDATA[0]

LVB_CKM

AR102

22 1/16W

R1153 56

MADR[8]

M_CAS

LVA_CKM

R1142 56

R1146 56

MDATA[5]

LVA_2M

AR101

22 1/16W

BA1

MDATA[19]

MCLK+

MDATA[21]

DQM3

DQM1

MDATA[28]

MADR[3]

MADR[10]

R1149 56

R1143 56

R1148 56

LVB_0P

M_RAS

LVA_4M

DQS1

MDATA[10]

MDATA[3]

MDATA[17]

MDATA[11]

LVA_1P

MDATA[30]

MDATA[8]

M_WE

AR104

22 1/16W

MDATA[31]

LVB_1M

LVA_0P

R1147 56

LVA_CKP

R1145 56

R1157 56

R1144 56

R1154 56

1

LVA_3P

MDATA[4]

R1152 56

MDATA[27]

AR106

22 1/16W

MDATA[26]

MADR[0]

R1156 56

MDATA[25]

LVB_2P

LVB_4P

MADR[1]

MDATA[2]

DQS2

BA0

MCLK-DQS0

MADR[9]

MDATA[14]

LVA_3M

LVB_1P

MDATA[29]

LVB_3M

MDATA[9]

LVA_0M

R1150 56

AR103

22 1/16W

MDATA[6]

MDATA[12]

DQM0

MDATA[15]

MADR[6]MADR[7]

MADR[2]

R1158 56

R1141 56

MADR[11]MADR[12]

LVA_2P

MDATA[20]

MDATA[24]

MDATA[18]

R1151 56

DQS3

LVA_4P

AR105

22 1/16W

R1121

1K 1%

+3.3V_AVDD_OTG

C1600.1uF50V

+3.3V_AVDD_LPLL

C1631000pF

+3.3V_AVDD_SIF

+1.25V_VDDC

C1680.1uF50V

+3.3V_AVDD_ADC

+3.3V_AVDD_AU

C1550.1uF50V

+2.5V_VDD_DDR

C1520.1uF50V

+1.25V_AVDD_DVI

C1570.1uF50V

C164

0.1uF

+3.3V_AVDD_MPLL

C1690.1uF50V

C1530.1uF50V

C1560.1uF50V

C1540.1uF50V

C1670.1uF50V

R11201K

1%

C1620.1uF50V

+3.3V_VDDP

C1580.1uF50V

C1590.1uF50V

+3.3V_AVDD_MEMPLL

C1610.1uF50V

+2.5V_VDD_DDR

C1650.1uF50V

R1008100

R1007

100

C132 0.047uFC133 0.047uF

R1025 47R1026 47

AV_L_OUT006:AN10

AV_R_OUT

006:AN5

AV_CVBS_OUT

C1110.1uF

IC101

KIA7027AF

2

G

3 O1I

+3.3V_VDDP_ST+3.3V_VDDP_ST

C1031uF10V

IC10274LX1G14CTR

3GND

21A

41Y

1NC

5VCC

SW100TMUE312GAB

OPT1 2

43

5

R10011K

MUTE_AV_L/R006:AM7

+3.3V_VDDP_ST

SPI_CSN_1

Flash_WP_2

R1122100

SPI_SDIC166

0.1uF

R1123

4.7K

Flash_WP_1

+3.3V_VDDP_ST

SPI_SCK

SPI_SDO

+3.3V_VDDP_ST

R1126100

C1700.1uF

R1125100

SPI_CSN_2

R1133100

R1132100

FRC_RESET

C100247uF16V

SDA_D_TU003:M14;004:H13;001:H25;001:AB6

DSUB_DET005:AB15

R1178100FRC

EN_3.3VF

SDA_D_TU003:M14;004:H13;001:H25;001:AM6

R1134100

R1173100

FRC

R1172100

FRC

R1180100OPT

R11740

OPT

SIDE_CVBS_DET

006:I21

R11750

OPT

R1135100

R1167100

R118322FRCSCL_D_TU

003:M14;004:H13;001:H25;001:AB5EN_2.5VF

R1137100

R1170100

FRC

C10010.1uF

EN_1.8VF

USB_OCD006:AK24

IC106JLC1562BFEL

3 A2

2 A1

4 D0

1 A0

6 D2

5 D1

7 D3

8 Vss 9D4

10D5

11D6

12D7

13VDAC

14SCL

15SDA

16VDD

SCL_D_TU

003:M14;004:H13;001:H25;001:AM5 R1171100

FRC

R1179100OPT

LVDS_SEL

EN_1.3VFR1136

100

FRC_RESET

R116822

R11760

FRC

R1166100

EN_1.3PLL

R116922

R1164100

COMP2_DET005:G11

+5V_TU

COMP1_DET005:R9

IC108

JLC1562BFEL

FRC

3 A2

2 A1

4 D0

1 A0

6 D2

5 D1

7 D3

8 Vss 9D4

10D5

11D6

12D7

13VDAC

14SCL

15SDA

16VDD

R118222FRC

R1163100

R1181100FRC

BIT_SEL

R1165100

OPT

SIDE_Y/C_DET006:H13

R1177100FRC

R10192.7K

R10202.7K

R110322

R109122

R10144.7KAUS_ONLYR1013

10K

OPT

R100610KOPT

R11314.7K

+3.3V_VDDP_ST

SPK_N

SPK_P

TU_TS_VALTU_TS_SYNC

TU_TS_DATA[0]

TU_TS_CLK

IC105S25FL064A

Flash_Memory

EAN42961201

3NC_1

2VCC

4NC_2

1HOLD

6NC_4

5NC_3

7CS

8SO

9W

10GND

11NC_5

12NC_6

13NC_7

14NC_8

15SI

16SCK

IC107S25FL064A

Flash_Memory

EAN42961201

3NC_1

2VCC

4NC_2

1HOLD

6NC_4

5NC_3

7CS

8SO

9W

10GND

11NC_5

12NC_6

13NC_7

14NC_8

15SI

16SCK

R11842.2K NON_YAMAHA

R1185

10K

NON_YAMAHA

C1003

0.01uF

NON_YAMAHA

R1186

10K

OPT

R118722

R118822+5V_ST

R1124

4.7K

FRC

+3.3V_CI

R1127

4.7K

FRC

R1128

4.7K

FRC

R1129

4.7K

FRC

R1140

4.7K

FRC

+3.3V_CI

R1130

4.7K

OPT

R1138

4.7K

OPT

R1139

4.7K

FRC

IC100

LGE7363C-LF

SDR_CKEA14

SDR_CKL+C15

SDR_CLK-B15

SDR_DQS_0B7

SDR_DQM_0A7

SDR_DQ_0B3

SDR_DQ_1A3

SDR_DQ_2B4

SDR_DQ_3A4

SDR_DQ_4B5

SDR_DQ_5A5

SDR_DQ_6B6

SDR_DQ_7A6

SDR_DQS_1B12

SDR_DQM_1A12

SDR_DQ_8B8

SDR_DQ_9A8

SDR_DQ_10B9

SDR_DQ_11A9

SDR_DQ_12B10

SDR_DQ_13A10

SDR_DQ_14B11

SDR_DQ_15A11

SDR_DQS_2A20

SDR_DQM_2B20

SDR_DQ_16B16

SDR_DQ_17A16

SDR_DQ_18B17

SDR_DQ_19A17

SDR_DQ_20B18

SDR_DQ_21A18

SDR_DQ_22B19

SDR_DQ_23A19

SDR_DQS_3G19

SDR_DQM_3G20

SDR_DQ_24C19

SDR_DQ_25C20

SDR_DQ_26D19

SDR_DQ_27D20

SDR_DQ_28E19

SDR_DQ_29E20

SDR_DQ_30F19

SDR_DQ_31F20

SDR_CASZE10

SDR_RASZD10

SDR_WEZC10

SDR_BA0E11

SDR_BA1D11

SDR_AD12E13

SDR_AD11D13

SDR_AD10E12

SDR_AD9D12

SDR_AD8C12

SDR_AD7C11

SDR_AD6C13

SDR_AD5B13

SDR_AD4A13

SDR_AD3E14

SDR_AD2D14

SDR_AD1C14

SDR_AD0D15

RXO0-H19

RXO0+H20

RXO1-J19

RXO1+J20

RXO2-K19

RXO2+K20

RXOC-L19

RXOC+L20

RXO3-M19

RXO3+M20

RXO4-N19

RXO4+N20

RXE0-P19

RXE0+P20

RXE1-R19

RXE1+R20

RXE2-T19

RXE2+T20

RXEC-U19

RXEC+U20

RXE3-V19

RXE3+V20

RXE4-W19

RXE4+W20

TS1_CLKJ16

TS1_SYNCH16

TS1_VLDH17

TS1_D0K18

TS0_CLKY7

TS0_SYNCW7

TS0_VLDV7

TS0_D7U7

TS0_D6T7

TS0_D5Y6

TS0_D4W6

TS0_D3V6

TS0_D2U6

TS0_D1T5

TS0_D0T6

PCM_A0Y12

PCM_A1W12

PCM_A2V12

PCM_A3U12

PCM_A4Y11

PCM_A5W11

PCM_A6V11

PCM_A7U11

PCM_A8T11

PCM_A9Y10

PCM_A10W10

PCM_A11V10

PCM_A12U10

PCM_A13T10

PCM_A14Y9

PCM_D0V9

PCM_D1U9

PCM_D2T9

PCM_D3Y8

PCM_D4W8

PCM_D5V8

PCM_D6U8

PCM_D7T8

PCM_IORDP16

PCM_IOWRR16

PCM_OE_NM17

PCM_WE_NN17

PCM_REG_NT17

PCM_CE_NV18

PCM_IRQAP18

PCM_WAIT_NT18

PCM_RESETN16

PCM_CD_NK16

IC100LGE7363C-LF

GPIO0/UART_RX1/CECC4

GPIO1/UART_TX1D4

DDCR_DATV15

DDCR_CLKW15

DDC_SDA/UART-TXT15

DDC_SCL/UART-RXU15

GPIO3E4

SD/MS_D0U16

SD/MS_D1R17

SD/MS_D2U18

SD/MS_D3N18

SD_SPDZR18

SD_CMDT16

SD/MS_CLKP17

SD_OCDTU17

SD_PWRCTLV17

SD_MS_INSM16

SD_CDZL16

INT/GPIO4T14

GPIO14/UART_TX1E16

I2S_IN_BCK/GPIO24G18

I2S_IN_WS/GPIO23F18

LVSYNC/GPIO22K17

LHSYNC/GPIO21J17

LDE/GPIO20M18

LCK/GPIO19L18

DOUT_CLK/GPIO20Y3

DIN_D3/GPIO28V5

DIN_D2/GPIO27U5

DIN_D1/GPIO26Y4

DIN_D0/GPIO25W4

DOUT_3/GPIO24V4

DOUT_2/GPIO23U4

DOUT_1/GPIO22W3

DOUT_0/GPIO21V3

TCON_EXT3/GPIO19D6

TCON_EXT2/GPIO18C6

TCON_EXT1/GPIO17D5

TCON_EXT0/GPIO16C5

INT2/GPIO26H18

IRIN2/GPIO25J18

TESTPINE6

XTALIA2

XTALOA1

USB_DPP4

USB_DMN4

USB_REXTC7

RESETY15

XIN_RTCW5

XOUT_RTCY5

IRIN/GPIO3T13

RXCNB2

RXCPB1

RX0NC2

RX0PC1

RX1ND2

RX1PD1

RX2NE2

RX2PE1

HOTPLUGAG5

REXTE3

DDCDA_DAE5

DDCDA_CKF5

I2S_OUT_MUTE/CECE17

HSYNC1G1

VSYNC1G2

VCLPF3

REFPF2

REFMF1

BIN1P_1H1

SOGIN1H2

GIN1PH3

BIN1P_2J1

BIN0MJ2

BIN0PJ3

GIN0MK1

GIN0PK2

SOGIN0MF4

RIN0MK3

RIN0PL1

HSYNC0J4

VSYNC0K4

C1(CVBS7P)L4

Y1(CVBS5P)L2

C0(CVBS6P)L3

Y0(CVBS4P)M1

CVBS3PG4

CVBS2PN3

CVBS1PM4

VCOM1N2

CVBS0PG3

VCOM0M2

CVBS_OUTN1

SIF_IN1PP1

SIF_IN1MP2

LINE_IN_0LR1

LINE_IN_0RR2

LINE_IN_1LR3

LINE_IN_1RR4

LINE_IN_2LT1

LINE_IN_2RT2

LINE_IN_3LT3

LINE_IN_3RT4

VIM0R5

AUVRMU3

AUVRPU2

AUVAGU1

LINE_OUT_2LV1

LINE_OUT_2RV2

LINE_OUT_1LW1

LINE_OUT_1R(DACO_S)W2

LINE_OUT_0L(DACO_L)Y1

LINE_OUT_0R(DACO_R)Y2

SAR0W13

SAR1Y13

SAR2W14

SAR3Y14

PWM0U13

PWM1V13

PWM2U14

PWM3V14

SPDIF_ING17

SPDIF_OUTE15

I2S_OUT_SDD17

I2S_OUT_BCKC17

I2S_OUT_WSG16

I2S_OUT_MCKF16

I2S_IN_SDF17

NC_1M3

NC_2W9

SPI_CK1Y18

SPI_DI1Y16

SPI_DO1Y19

SPI_CZ1Y17

IC100LGE7363C-LF

VSS_1M12

VSS_2M11

VSS_3M10

VSS_4M9

VSS_5M8

VSS_6L12

VSS_7L11

VSS_8L10

VSS_9L9

VSS_10L8

VSS_11K12

VSS_12K11

VSS_13K10

VSS_14K9

VSS_15K8

VSS_16J12

VSS_17J11

VSS_18J10

VSS_19J9

VSS_20J8

VSS_21C3

VSS_22D3

VSS_23H4

VSS_24C8

VSS_25C9

VSS_26D8

VSS_27D9

VSS_28E8

VSS_29E9

VSS_30C16

VSS_31D16

VSS_32C18

VSS_33D18

VSS_34E18

VSS_35T12

VSS_36V16

VSS_37W16

VSS_38W17

VSS_39W18

VSS_40Y20

IC100LGE7363C-LF

VD33_1P11

VD33_2P12

VD33_3P13

VD33_4P14

VD33_2_1P9

VD33_2_2P10

AVDD_33_1G6

AVDD_33_2H6

AVDD_33_3J6

AVDD_33_4K6

AVDD_33_5L6

AVDD_33_6G7

AVDD_MPLLE7

AVDD_MEMPLLB14

AVDD_USBD7

AVDD_LPLL_1G12

AVDD_LPLL_2L17

AVDD_AUP6

AVDD_SIFP3

AVDD_DDR_1G13

AVDD_DDR_2G11

AVDD_DDR_3G10

MVREFA15

AVDD_DVI_1G8

AVDD_DVI_2G9

VDDC_1M6

VDDC_2N6

VDDC_3G14

VDDC_4H14

VDDC_5J14

VDDC_6K14

VDDC_7L14

VDDC_8M14

VDDC_9N14

VDD_PWRP7

AVDD_RTCP8

R1036 0

MUTE_YAMAHA008:AL9

YAMAHA_GAIN0008:AK10

R101010K

C1104.7uF6.3V

5V_HDMI_4007:R11;007:W23;007:AD24

YAMAHA_GAIN1008:AK11

R10490

C10727pF

C10827pF

PS421/NTP_SCLPS421/NTP_SDA

FRAME_SEL

+3.3V_CIR1159 4.7K

OPT

+3.3V_VDDP_ST

SYSTEM_SCL001:H28;001:S5

SYSTEM_SDA001:H28;001:S5

IC109CAT24WC08W-T

3A2

2A1

4VSS

1A0

5 SDA

6 SCL

7 WP

8 VCCR1274.7K

C171

0.1uF

R126 22

R125 22

PS421_RST008:AK10

X

//BOOTSTRAP PWM[1:0]=10

R1055

EEPROM

R1081

VIDEO IN

O

0

V

AUDIO IN

O

O

42"/47" FHD

O X

R1110

26'HD

X

R1051

O

0.77

R1109MODULE SELECT

X

I2S

52" Sharp

GPIO

AUDIO OUT

XO

1.65X X

X X X

X

X2.48X

O32/37/42/47HD

FLASH

HDMI

DDR MEMORY

LVDS

TS SIGNAL

ST_BY 3.3V

VIDEO OUT

FLASH MEMORY

I/0 EXPANSION-2I/0 EXPANSION-1

HDCP EEPROM

SCH

EMATIC

DIA

GR

AM

Copyright ©

2008 LG E

lectronics. Inc. All right reserved.

Only for training and service purposes

LGE

Internal Use O

nly

Page 35: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

DDR

MADR[6]

MDATA[3]C208

0.1uF

MDATA[5]

MADR[8]

MADR[11]

C20922uF16V3225

C206

0.1uF

MDATA[9]

MDATA[12] MDATA[0]

MADR[9]

BA0

M_RAS

MDATA[11]

MADR[10]

MDATA[13]

C2100.1uF50V

DQS0

C207

0.1uF

+2.5V_DDR

M_CAS

MADR[4]

MADR[2]

+2.5V_DDR

MADR[12]

MADR[1]

MADR[5]

R2061K1%

MDATA[2]

MDATA[8]

+2.5V_DDR

MADR[0]

MADR[3]

MDATA[1]

MADR[7]

+2.5V_DDR

M_WE

BA1

MDATA[4]MDATA[10]

R2071K

1%

MADR[7]

MADR[11]

MADR[12]

DQS2

MDATA[18]

C220

0.1uF

BA1

+2.5V_DDR

C219

0.1uF

MDATA[17]

+2.5V_DDR

MDATA[27]

MDATA[19]

MDATA[26]

MDATA[28]

MADR[8]MADR[10]

DQS3

MADR[2]

MDATA[29]

MADR[5]

C217

0.1uF

MADR[6]

MDATA[25]

MADR[3]

R2121K

1%

C2180.1uF50V

M_RAS

+2.5V_DDR

M_CAS

R2111K1%

MADR[0]

MADR[4]

MADR[1]

M_WE

MDATA[16]

BA0

MADR[9]

MDATA[24]

+2.5V_DDR

AR200221/16W

AR201221/16W

AR202221/16W

AR203221/16W

AR204221/16W

AR205221/16W

AR20722

AR20622

DQS1

DQM1

MDATA[14]MDATA[15]

R20022

1%DQM0

MDATA[7]MDATA[6]

R20122

1%

CLKE

MCLK+

MCLK-

C22122uF16V3225

MDATA[30]

DQM3

C222

0.1uF50V

C2240.1uF50V

MDATA[31]

R20322

1%

CLKE

DQM2MCLK-

MCLK+

MDATA[21]

MDATA[23]

MDATA[20]

MDATA[22]

R21922

1%

C20122uF16V3225

C21122uF16V3225

IC201HY5DU561622FTP-4-C

26BA0

27BA1

28A10/AP

29A0

30A1

31A2

32A3

33VDD_3

34VSS_1

35A4

36A5

37A6

38A7

39A8

40A9

41A11

42A12

43NC_4

44CKE

45CLK

46/CLK

47UDM

48VSS_2

49VREF

50NC_5

17NC_2

3VDDQ_1

6VSSQ_1

16LDQS

15VDDQ_3

14NC_1

13DQ7

12VSSQ_2

11DQ6

10DQ5

9VDDQ_2

8DQ4

7DQ3

4DQ1

5DQ2

25NC_3

24/CS

23/RAS

2DQ0

22/CAS

21/WE

1VDD_1

20LDM

19NC

18VDD_2

51UDQS

52VSSQ_3

53NC_6

54DQ8

55VDDQ_4

56DQ9

57DQ10

58VSSQ_4

59DQ11

60DQ12

61VDDQ_5

62DQ13

63DQ14

64VSSQ_5

65DQ15

66VSS_3

IC200HY5DU561622FTP-4-C

26BA0

27BA1

28A10/AP

29A0

30A1

31A2

32A3

33VDD_3

34VSS_1

35A4

36A5

37A6

38A7

39A8

40A9

41A11

42A12

43NC_4

44CKE

45CLK

46/CLK

47UDM

48VSS_2

49VREF

50NC_5

17NC_2

3VDDQ_1

6VSSQ_1

16LDQS

15VDDQ_3

14NC_1

13DQ7

12VSSQ_2

11DQ6

10DQ5

9VDDQ_2

8DQ4

7DQ3

4DQ1

5DQ2

25NC_3

24/CS

23/RAS

2DQ0

22/CAS

21/WE

1VDD_1

20LDM

19NC

18VDD_2

51UDQS

52VSSQ_3

53NC_6

54DQ8

55VDDQ_4

56DQ9

57DQ10

58VSSQ_4

59DQ11

60DQ12

61VDDQ_5

62DQ13

63DQ14

64VSSQ_5

65DQ15

66VSS_3

C2150.1uF50V

C202

470pF

C203

470pF

C204

470pF

C205

470pF

C212

470pF

C213

470pF

C214

470pF

C216

470pF

R2200

R2210

R2220

R2230

C223

0.1uF16V

R20856

1%

R216

561%R21356

R20256

1%

R20556

1%

R204300

1% R209300

1%

R21056

1%

ADDRESS TOTAL LENGTH < 3000 mil (76.2mm)

DDR1 & DDR2 different length range = +/- 25 mil (max +/- 50 mil)

1 mil = 0.0254 mm20 mil = 0.508 mm40 mil = 1.016 mm

Copyright ©

2008 LG E

lectronics. Inc. All right reserved.

Only for training and service purposes

LGE

Internal Use O

nly

Page 36: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

MODUEL&CTL

LVA_0M

LVB_2P

+3.3V_CI

C3021000pF50V

EN_1.3VF

R3074.7K

FHD&NON-FRC

L302 FRC

LVA_CKP

EN_3.3VF

LVB_0M

LVA_3M

LVA_3P

L301 FRC

R3101.3K

BIT_SEL

P301

SMAW200-40C

FHD_LVDS_wafer

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

+5V_GENERAL

C3010.1uF50V

LVB_4M

L303 FRC

R309 0OPT

+3.3V_CI

EN_1.3PLL

P302

SMAW200-26C

HD

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

LVB_CKP

R3131.3K

LVA_4P

+3.3V_VDDP_ST

LVB_3P

+12V

R3111.3K

LVA_0P

LVB_1M

R306 4.7K

NON-FRC

LVB_3M

LVB_2M

+3.3V_CI

FRC_RESET

P303

SMAW200-13 FRC

1

2

3

4

5

6

7

8

9

10

11

12

13

LVA_CKM

LVB_0P

R3050

OPT

LVA_4M

R308

0OPT

LVDS_SEL

LVB_CKM

R302 0 OPT

R3030

HD

EN_2.5VF

LVA_2P

+15V

LVB_4P

LVA_2M

PANEL_POWER003:T8;009:K5

EN_1.8VFLVA_1P

L304

OPT

LVA_1M

R301 0 FRC

R3121.3K

R304 0 OPT

LVB_1P

R314 0 OPT

SDA_D_TU

R316 0 FRCSCL_D_TU

R315 0 FRC

PANEL_POWER003:L19;009:K5 +3.3V_CI

R1189

0

OPT

R1190

0

OPT

R1191

0

OPT

R11920

OPT

JP3007

JP3006

JP3005

JP3001

JP3002

JP3003

JP3004

FRAME_SELR317 0 OPT

JP3008

C303100uF16V

PANEL_POWER DEVIDER

Copyright ©

2008 LG E

lectronics. Inc. All right reserved.

Only for training and service purposes

LGE

Internal Use O

nly

Page 37: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

TUNER

TU_TS_SYNC

TU_TS_VAL

TU_TS_DATA[0]

TU_TS_CLK

C4160.1uF

50V

+3.3V_TU

R415 33

C40847pF50V

C40447pF50V

SDA_D_TU003:M14;001:H25;001:AB6;001:AM6

SCL_D_TU

003:M14;001:H25;001:AB5;001:AM5

+3.3V_TU

L401LEMC3225T-6R8M

C421100uF16V

C420100uF16V

C4170.1uF50V

C4140.1uF50V

C4050.1uF50V

+5V_TU BOOSTER

+5V_TU

R4502.2K

R45510K

C427100uF16V

C4260.01uF50V

R444OPT

L402

LEMC3225T-6R8M

Q405

2SA1530A-T112-1RE

B

C

R402 0

OPT

C42347pF50VOPT

R401 0 AUS_ONLY

R451

OPT

Q4042SA1530A-T112-1R

E

B

C

C4290.01uF50V

R454

220

Q4062SA1530A-T112-1R

E

B

C

R4680

TV_CVBS+

+5V_TU

C403

100pF 50V

AUS_ONLY

R4434.7K

Q403

2SA1530A-T112-1R

E

B

C

R446470 R449

82SIF+

+5V_TU

C41347pF50V

AUS_ONLY

C41247pF50V AUS_ONLY

R420 47

AUS_ONLY

R419 47

AUS_ONLY

+3.3V_TU

R4224.7K

OPTR4244.7K

OPT+5V_TU

C4020.1uF50V

C4010.1uF50V

+1.8V_TU

C419100uF

16V

C4100.1uF

50V

C4150.1uF

50V

C4090.1uF

50V

C418100uF

16V

R441 0

R442 0

R440 0

R439 0

GND_1

R435 0

R437 0

R438 0

GND_2

R436 0

R430 0

R432 0

R433 0

GND_3

R431 0

R425 0

R427 0

R428 0

GND_4

R426 0

SCL_A_TU 004:L4;004:R8;001:H26

GND GNDGNDGND

R452

10KOPT

+5V_TU

R403 0 AUS_ONLY

C4254700pF50V R445

1K

R4481K

C4284700pF50V

TU_RESET_N

R429100

+3.3V_TU

R4184.7K

C4111000pF

50V

C4061000pF50V

C4071000pF50V

R4344.7K

R457

0

C4220.1uF50VOPT

R465330

R447

0

R461100

R466330

Q4022SC3052

E

B

C

Q4072SC3052

E

B

C

C4240.1uF50VOPT

LD400

TU401

TDFV-G135D1

AUS_Tuner

EBL42367001

1ANT[5V]

2BB[CTR]

3GND_1

4+B[5V]

5NC_1

6RF_AGC

7TP[VT]

8NC_2

9GND_2

10SDA_T

11SCL_T

12AIF_1

13AIF_2

14NC_3

15VIDEO

16AUDIO

17SIF

18SDA

19SCL

20RST

213.3V

221.8V

23ERR

24MCL

25D7

26D6

27D5

28D4

29D3

30D2

31D1

35

SHIELD

32D0

33VAL

34SYNC

R41633

R41733 R421

1.2K

R423

1.2K

R462 0

TAIWAN

R463 0

TAIWAN

R467 0

TAIWAN

R469 0

OPT

C43227pF

TAIWAN

+5V_TU

R4584.7K

OPT

C43127pF

TAIWAN

R4564.7K

OPT

SDA_A_TU004:K16;004:L3;001:H26

SCL_A_TU004:K15;004:L4;001:H26

TU_TS_DATA[0]

TU_TS_VAL

TU_TS_SYNC

TU_TS_CLK

R472

4.7K

OPT

SCL_A_TU

Q408

2N7002(F)

G

DS

Q409

2N7002(F)

G

DS

+3.3V_TU

R471 0

SCL_A_TU_5V

SDA_A_TU

+5V_TU

SDA_A_TU_5V

R474

2K R475

2K

R477

5.6K

R470 0R476

5.6K

R473

4.7KOPT

R481 0 AUS_ONLY

R480 0 OPT

SCL_A_TU_5V

SDA_A_TU_5VR479 0 AUS_ONLY

R478 0 OPTSDA_A_TU 004:L3;004:R8;001:H26

R483 0TAIWAN

SCL_A_TU_5V

R484 0 OPT

R485 0TAIWAN

R482 0 OPT

SDA_A_TU_5V

C4330.1uF16V R464

100pFTAIWAN

50V

R459100TAIWAN

R460100TAIWAN

TU402TAFT-H005FTAIWAN

EBL35311216

14AFT

13V-OUT

5RF_AGC

12NC_4

11AS

2GND_1

19NC_7

18NC_6

10CLOCK

4NC_2

1NC_1

17NC_5

9DATA

8GND_2

3+B[5V]

16SIF-OUT

7NC_3

6TP[33V_OPTION]

15A-OUT

21

SHIELD

20NC_8

TP465

TP466

TP470

R412 100

R413 100

R414 100

R404 100

TU401-*1

TDFV-D135F

TAIWAN_TUNER

1ANT[5V]

2BB[CTR]

3GND_1

4+B[5V]

5NC_1

6RF_AGC

7TP[VT]

8NC_2

9GND_2

10

SDA_T

11

SCL_T

12

AIF_1

13

AIF_2

14

NC_3

15

NC_4

16

NC_5

17

NC_6

18

SDA

19

SCL

20

RST

21

3.3V

22

1.8V

23

ERR

24

MCL

25

D7

26

D6

27

D5

28

D4

29

D3

30

D2

31

D1

35

SHIELD

32

D0

33

VAL

34

SYNC

C4340.1uF

C4350.1uF

OPT

R453-*1220TAIWAN

R453270AUS

C430680pF50VOPT

AM_AUDIO

Copyright ©

2008 LG E

lectronics. Inc. All right reserved.

Only for training and service purposes

LGE

Internal Use O

nly

Page 38: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

COMP1_Pr005:T6

R5050

L501MBW3216-501TF

COMP1_Pb005:T6

R522 22

R5060 R524 22

R523 22

R5020

R5040

R5120

R5030

COMP1_Y005:T7

COMP_Pb 001:F18

IC500STMAV340

EAN32724702

32B

21C

42C

11B

63C

53B

74B

84C

9GND

104A

113A

122A

131A

14S

15OE_N

16VCC

C506

0.01uF

COMP2_Pr005:J7

C50747uF16V

COMP_Pr 001:F18

+5V_GENERAL

R5070

R525 22COMP_Y 001:F18

COMP_SEL008:E6;008:O10;001:H24

COMP2_Pb005:J8

COMP2_Y005:J9

COMP2_Pr C508

0.1uF50V

R53710K

R532470K

D506

5.6VCDS3C05GTA

OPT

COMP1_R_IN

R51175

R51622

D510

5.6VCDS3C05GTA

OPT

R514470K

COMP1_DET 001:W4

R513470K

R50110K

D503

30VCDS3C30GTH

OPT

R53322

D501

30VCDS3C30GTH

OPT

D512

5.6VCDS3C05GTA

OPT

C512100pF

50V

COMP1_Pb

R5081K

R52875

D507

30VCDS3C30GTH

OPT

COMP2_DET 001:W4

R52610K

+5V_GENERAL

R50975

D505

5.6VCDS3C05GTA

OPT

D502

30VCDS3C30GTH

OPT R51722

D504

5.6VCDS3C05GTA

OPT

C504100pF

50V

R52112K

C505100pF

50V

D509

30VCDS3C30GTH

OPT

R51522

JK501

PPJ209-02

6612J10031A

4A [GN]CONTACT

2A [GN]1P_CAN

3A [GN]O_SPRING

2B [BL]1P_CAN

5B [BL]C_LUG_L

2C [RD]1P_CAN1

5C [RD]C_LUG_L

2D [WH]1P_CAN

5D [WH]C_LUG_L

2E [RD]1P_CAN2

4E [RD]CONTACT

3E [RD]O_SPRING

R52012K

R53075

R52975

R51075

C511100pF

50V

C503

0.1uF50V

R53610K

COMP1_Pr

D508

30VCDS3C30GTH

OPT

COMP2_R_IN

R53812K

C510

0.1uF50V

COMP2_Y

R53912K

COMP1_L_IN

R53422C509

0.1uF50V

R531470K

COMP2_L_IN

C501

0.1uF50V

R51810K

D511

5.6VCDS3C05GTA

OPT

C502

0.1uF50V

R53522

+5V_GENERAL

JK502

PPJ209-02

6612J10031A 4A [GN]CONTACT

2A [GN]1P_CAN

3A [GN]O_SPRING

2B [BL]1P_CAN

5B [BL]C_LUG_L

2C [RD]1P_CAN1

5C [RD]C_LUG_L

2D [WH]1P_CAN

5D [WH]C_LUG_L

2E [RD]1P_CAN2

4E [RD]CONTACT

3E [RD]O_SPRING

R5271K

R51910K

COMP1_Y

COMP2_Pb

D520

5.6VCDS3C05GTA

OPT

JP5015

R54875

D517

30VCDS3C30GTH

R54322

C517OPT

OPTP501

KCN-DS-1-0089

1 2 3 4 5

6 7 8 9 10

11

12

13

14

15

16

D51330V

EEPROM_WP

DSUB_HSYNC

JP5013

+5V_GENERAL

JP5017

R55222

D519ENKMC2838-T112

A1

C

A2

C5180.1uF50V

R55710K

R5514.7K R556

100

JP5014

DSUB_B

C516OPT

OPTR54675

R54422

C52018pF50V

DSUB_GJP5016

C51918pF50V

R55310K

D521

5.6VCDS3C05GTA

OPT

DSUB_R

R5504.7K

IC501

AT24C02BN-10SU-1.8

0IMMRAL014D

3A2

2A1

4GND

1A0

5SDA

6SCL

7WP

8VCC

D516

30VCDS3C30GTH

R5550

OPT

D518

5.6VCDS3C05GTA

OPT

DSUB_DET

C514

22pF50V

R54210K

DDC_SCL/UART_RX

D515

30VCDS3C30GTH

R54775

D51430V

CDS3C30GTH

DSUB_VSYNC

C515OPT

OPT

R54522

R558

1K

DDC_SDA/UART_TX

R541100

R54910K

C51322pF50V

R55422

R540100

R7017100

R7018100

+5V_ST

JP5020

JP5021

TP551

HIGH:COMP1

COMPONENT-SW

LOW :COMP2

COMPONENT1

COMPONENT2

D-SUB

Copyright ©

2008 LG E

lectronics. Inc. All right reserved.

Only for training and service purposes

LGE

Internal Use O

nly

Page 39: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

USB DOWN STREAM

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

+12V_AVOUT

R628100

R6244.7K

D605

5.6VCDS3C05GTA

OPT

R6290

R623

4.7K

RS232C_TXD

001:H29

+3.3V_VDDP_ST

C603100pF

50V

+3.3V_VDDP_ST

C602100pF50V

JK603

PEJ024-01

6612F00099A

6B T_TERMINAL2

8 SHIELD_PLATE

7B B_TERMINAL2

5 T_SPRING

4 R_SPRING

7A B_TERMINAL1

6A T_TERMINAL1

3 E_SPRING

PC_R_IN 001:G15

RS232C_RXD

R626100

D604

5.6VCDS3C05GTA

OPT

D611

30VCDS3C30GTH

OPT

D610

30VCDS3C30GTH

OPT

R603470K

R608470K

PC_L_IN 001:G15

C6170.47uF

25V

R61310K

R61210K

D612

5.6V

OPT

+5V_USB

D613

5.6V

OPT

C622

10uF

16V

USB_DM

TP619

TP620

TP621

USB_DP

L606

MBW3216-501TF

P601KCN-DS-1-0088

1 2 3 4 5

6 7 8 9

10

R6155.1K

R6165.1K

IC601

MAX3232CDR

EAN41348201

3C1-

2V+

4C2+

1C1+

6V-

5C2-

7DOUT2

8RIN2

9ROUT2

10

DIN2

11

DIN1

12

ROUT1

13

RIN1

14

DOUT1

15

GND

16

VCC

R63551K

R636100K

JK606

PPJ200-07

3A

2A

4A

2B

5B

JP6018

ZD602OPT

JP6019

ZD601OPT

JK604

PPJ204-01

EAG35542201

1 O_SPRING

2 CONTACT

3 U_CAN

SIDE_C_IN

D60730V

CDS3C30GTH

+5V_GENERAL

R6101K

R61975

SIDE_CVBS_IN

D60930V

C608100pF50V

OPT

SIDE_Y_IN

R61122

L603

D60830V

CDS3C30GTH

D60630V

CDS3C30GTH

L601

SIDE_Y/C_DET

C604100pF50V

C605100pF50V

R61422

R617 10K

R60110K

C607100pF50V

OPT

R60775

C6010.1uF16V

+5V_GENERAL

R604470K

R60210K

L602

R62112K

SIDE_CVBS_DET

R60675

SIDE_L_IN

C606100pF50V OPT

SIDE_R_IN

R62212K

R605470K

R609 22

R618 10K

R6200

Q6042SA1530A-T112-1R

E

B

C

R6381.5K

Q6032SA1530A-T112-1R

E

B

C

L609BG2012B080TF

R6391K

C6270.1uF16V

C632

10uFAV_L_OUT

R6411K

R64647K

R64347K

Q6052SC3875S

E

B

C

+12V_AVOUT

006:X19;006:AE16

Q6062SC3875S

E

B

C

C623

1000pF50V

C6330.1uF16VOPT

C635OPT

C625

1000pF50V

R64715K

L608BG2012B080TF

C6260.1uF16V

C63110uF6.3V

R6371.5K

D6145.6VOPT

R64415K

AV_R_OUT

D6155.6VOPT

R62775

C615

100uF

16V

+12V_AVOUT

006:AE16;006:AI12

R63347K

C614100uF16V

R630680

C62047uF16V

R63415K

Q602

2SC3875S

E

B

C

R632470

C6210.1uF50V

Q6012SA1530A-T112-1R

E

B

C

AV_CVBS_OUT

R649

2K

+12V_AVOUT

006:X19;006:AI12

C6300.1uF50V

L610HH-1M3216-501

+12V

003:Z14;008:Z12;009:A8;009:F12;009:H19

P602

KJA-UB-4-0004 1

23

45

JK602PSJ018-01

EAG42206001

1 GND_TER

2 C_LUG_S1

3 C_LUG_L1

6 NC1

7 COM1

8 NO1

9 NC2

10 COM2

11 NO2

12

SHIELD

4 C_LUG_S2

5 C_LUG_L2

JK601

PPJ218-01

EAG42205801

5C [RD]CONTACT

2C [RD]U_CAN

4C [RD]O_SPRING

2B [WH]U_CAN

3B [WH]C_LUG

2A [YL]U_CAN

5A [YL]CONTACT

4A [YL]O_SPRING

C618

470pF

C619

470pF

C6100.1uF50V

C6120.1uF50V

C6130.1uF

50VC6160.1uF50V

C609220pF

50V

C611220pF

50V

USB_CTL

001:H28

R645560K

R651100K

OPT

C6340.1uF50V

+5V_USB

+5V

USB_OCD

001:AB4R650

10K

R625

0OPT

JP6017

JP6020

JP6021

JP6023JP6022

C629100uF16V

Q6072SC3875S

E

B

C

Q6082SC3875S

E

B

C

MUTE_AV_L/R

001:H27

R648

2K

TP660

TP664

TP665

TP666

TP667

IC602TPS2042ADRG4

3EN1

2IN

4EN2

1GND

5OC2

6OUT2

7OUT1

8OC1

ZD606

5.6B

ZD6035.6B

ZD6045.6B ZD607

5.6B

ZD6055.6B ZD608

5.6B

C6284.7uF35V

C6244.7uF35V

+3.3V_VDDP_ST

R652

4.7K

L6052.2uH

L6042.2uH

R642560

R640560

R631-*1200TAIWAN

R631220AUS

RS232C USB

PC-AUDIO

Monitor Out - CVBS

AV-OUT-AUDIO

AV-OUT-CVBS

Side AV

Copyright ©

2008 LG E

lectronics. Inc. All right reserved.

Only for training and service purposes

LGE

Internal Use O

nly

Page 40: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

HDMI

D2+_HDMI3

CK+_HDMI4

HDMI_SCL

R747 0

OPT

R7003

0

HPD4

R7490

OPT

R72547K

HPD3

R732 22OPT

R781

0

+3.3V_VDDP_ST

HPD1

DDC_SCL_4007:V9;007:AE24

CK+_HDMI1

R718 0

OPT

DDC_SCL_1

C711

0.1uF

C718

0.1uF

R779

0

R708 0

R794

4.7K

OPT

EEPROM_WP

D0-_HDMI4

DDC_SDA_4

D2+_HDMI4

+3.3V_HDMI_ST

D2+_HDMI2

R7500

OPT

R762 4.7KOPT+3.3V_VDDP_ST

HDMI_CLK+

R797

4.7K

R7007 36K

OPT+5V_ST

R702

3.6K

GND

R7031K

+5V_ST

+5V_ST

C7070.1uF

Q7032SC3052

E

B

C

+3.3V_VDDP_ST

R731 22OPT

CK+_HDMI2

GND

R7051K

C720

0.1uF

CK+_HDMI1

5V_HDMI_1

R745 0

R756 22OPT

5V_HDMI_4

D1+_HDMI3

C7050.1uF

D2-_HDMI2

R774

0OPT

R7280

OPT

R7900

IC702

AT24C02BN-10SU-1.8

OPT

3A2

2A1

4GND

1A0

5SDA

6SCL

7WP

8VCC

R755 22OPT

D2+_HDMI2

R701

3.6K

5V_HDMI_1

R784 100

OPT

C7040.1uF

R768

0

HDMI_RX0-

DDC_SCL_3

Q7042SC3052

E

B

C

R740

0

OPT

R772

0

R741

3.6K

D2-_HDMI1

HDMI_CEC

001:J20;007:AF11

CK-_HDMI4

HPD

CK-_HDMI2

R780

0

D1+_HDMI1

D1-_HDMI1

R743

27K

R7005 36K

OPT

R7006 0

D2+_HDMI1

R709 0

DDC_SCL_1

R788

0

OPT

D2-_HDMI4

R730 22

OPT

R766 0

DDC_SDA_3

R710 0

CK-_HDMI1

CK+_HDMI3

D705ENKMC2838-T112

A1

C

A2

DDC_SCL_3

R714 0

C716

0.1uF

R746 0

DDC_SDA_1

5V_HDMI_2

D1+_HDMI4

+3.3V_VDDP_ST

5V_HDMI_2

HDMI_RX0+

IC703

AT24C02BN-10SU-1.8

OPT

3A2

2A1

4GND

1A0

5SDA

6SCL

7WP

8VCC

D2-_HDMI3

D701ENKMC2838-T112

A1

C

A2

D0+_HDMI2

BSS83Q705

S B D

G

D0-_HDMI1

CK-_HDMI3

DDC_SCL_2

C709

0.1uF

DDC_SDA_3

DDC_SCL_2

R7290

OPT

D1-_HDMI4

R744 0

OPT

R7910

HDMI_CEC

GND

R72747K

PS421/NTP_SDA

008:H15;001:H24

D702ENKMC2838-T112

A1

C

A2

R711 0

R7061K

CK+_HDMI3

SDA_EYEQ/AMP

Q7012SC3052

E

B

C

R713 0

D0+_HDMI4

R716 0

OPT

D0-_HDMI2

D0+_HDMI1

C7010.1uF50V

HPD2

PS421/NTP_SCL

R765 36K

OPT

D1-_HDMI2

R7421K

DDC_SCL_2007:H17;007:AJ9

D0-_HDMI2

EEPROM_WP

CEC_REMOTE007:F26;007:F17;007:O16;007:T8

D704

MMBD301LT1G

30V

AC

D1+_HDMI2

CK-_HDMI4

D0+_HDMI1

DDC_SCL_3

EEPROM_WP

CK-_HDMI3

5V_HDMI_3001:H24;007:O23;007:AD13

D0-_HDMI3

D1+_HDMI1 HDMI_RX2-

GND

C712

0.1uF

R783 100

OPT

CEC_REMOTE

DDC_SDA_2

CEC_REMOTE

007:F8;007:F26;007:F17;007:T8

R773

0

D0-_HDMI3

D1+_HDMI4

HDMI_RX2+

R707 0

R764 0

HPD1

CK-_HDMI2

R775

0

OPT

D0-_HDMI1

D0-_HDMI4

R753 22OPT

R704

3.6K

D706ENKMC2838-T112

A1

C

A2

HPD2

DDC_SDA_4

R796

4.7K

OPT

5V_HDMI_4

DDC_SCL_1

R771

0

5V_HDMI_3

D2-_HDMI2

R754 22OPT

DDC_SCL_4

D1-_HDMI3

DDC_SDA_1

HDMI_RX1+

DDC_SCL_4

DDC_SDA_4

+5V_STR7008 0

R719 0

OPT

CK+_HDMI2

R770

0

5V_HDMI_3

R795

510

HPD4

HDMI_RX1-

R761 4.7KOPT

Q7022SC3052

E

B

C

R715 0

C7020.1uF50V

R776

4.7K

OPT

D2+_HDMI4

R769

0

D2+_HDMI3

D1-_HDMI2

R7920

C715

2.2uF

R7001

0

R789

0

OPT

R712 0

R787

0OPT

R737

68K

R798

0

5V_HDMI_2001:H23;007:W29;007:AM11

+3.3V_VDDP_ST

D1-_HDMI1

C7060.1uF50V

GND

D0+_HDMI4

D1+_HDMI2

CK-_HDMI1

DDC_SDA_3

HDMI_CLK-

C710

0.1uF

C714

0.1uF

HPD3007:AF11

R738

0 OPT

D1+_HDMI3

D2-_HDMI4

IC701

AT24C02BN-10SU-1.8

OPT

3A2

2A1

4GND

1A0

5SDA

6SCL

7WP

8VCC

D0+_HDMI2

R7002

0

EEPROM_WP

D703OPT

D1-_HDMI3

C717

0.1uF

5V_HDMI_1001:H23;007:O28;007:AK25

SCL_EYEQ/AMP

CEC_REMOTE

R763 36K

OPT

CEC_REMOTE

D0+_HDMI3

R786

0

OPT

D1-_HDMI4

R7004

0

D2-_HDMI3

D0+_HDMI3

D2-_HDMI1

GND

C7030.1uF50V

D2+_HDMI1

R767 4.7KOPT

R733 22OPT

DDC_SDA_2

R75247K

R72347K

IC704

AT24C02BN-10SU-1.8

OPT

3A2

2A1

4GND

1A0

5SDA

6SCL

7WP

8VCC

DDC_SDA_2

HDMI_SDA

JK704

DC1R019NBH

EAG42025501

14NC

13CEC

5DATA1_SHIELD

20

JACK_GND

12CLK-

11CLK_SHIELD

2DATA2_SHIELD

19HPD

18+5V_POWER

10CLK+

4DATA1+

1DATA2+

17DDC/CEC_GND

9DATA0-

8DATA0_SHIELD

3DATA2-

16SDA

7DATA0+

6DATA1-

15SCL

DDC_SDA_1

C719

0.1uF

R799

0

CK+_HDMI4

5V_HDMI_4

C713

0.1uF

C7080.1uF

R722

1K

R724

1K

R726

1K

R751

1K

JK702

EAG39789401

1D2+

2D2_GND

3D2-

4D1+

5D1_GND

6D1-

7D0+

8D0_GND

9D0-

10CK+

11

12

13

14

15

16

17

18

19

20GND

21GND

22

JK701

EAG39789401

1D2+

2D2_GND

3D2-

4D1+

5D1_GND

6D1-

7D0+

8D0_GND

9D0-

10CK+

11

12

13

14

15

16

17

18

19

20GND

21GND

22

JK703

EAG39789401

1D2+

2D2_GND

3D2-

4D1+

5D1_GND

6D1-

7D0+

8D0_GND

9D0-

10CK+

11

12

13

14

15

16

17

18

19

20GND

21GND

22

R7009

0R7010

0

OPT

+3.3V_CI

R777

3.3K

R778

3.3K

JP7010

JP7009

JP7003

JP7004

JP7005

JP7006

JP7002

JP7001

JP7007

JP7008JP7012

JP7011

R73510K

R739

10K

R75710K

R75810K

R759

10KR73410K

R760

10K

R736

10K

R7850

R7011

0

IC705

PS421

1SCL1

2SDA1

3GPD1

4POW1

5CEC

6DDCBUF_EN

7GND_1

8CEXT

9PC0/I2C_RST

10

PC1/I2C_ADDR1

11

TEST

12

VCC_1

13

ECE_IN

14

CEC_OUT

15

S1/SDA_CTL

16

S2/SCL_CTL

17

S3/I2C_ADDR0

18

OE#/POWDN

19

I2C_CTL_EN

20

REXT

21

GND_2

22

POW4

23

HPD4

24

SDA4

25

SCL4

26 GND_3

27 IN4D1N

28 IN4D1P

29 VCC_2

30 IN4D2N

31 IN4D2P

32 GND_4

33 IN4D3N

34 IN4D3P

35 VCC_3

36 IN4D4N

37 IN4D4P

38 GND_5

39 IN3D1N

40 IN3D1P

41 VCC_4

42 IN3D2N

43 IN3D2P

44 GND_6

45 IN3D3N

46 IN3D3P

47 VCC_5

48 IN3D4N

49 IN3D4P

50 GND_7

51

SCL3

52

SDA3

53

HPD3

54

POW3

55

GND_8

56

OUT_D4P

57

OUT_D4N

58

VCC_6

59

OUT_D3P

60

OUT_D3N

61

GND_9

62

OUT_D2P

63

OUT_D2N

64

VCC_7

65

OUT_D1P

66

OUT_D1N

67

GND_10

68

SCL_SINK

69

SDA_SINK

70

HPD_SINK

71

POW_SINK

72

POW2

73

HPD2

74

SDA2

75

SCL2

76GND_1177IN2D1N78IN2D1P79VCC_880IN2D2N81IN2D2P82GND_1283IN2D3N84IN2D3P85VCC_986IN2D4N87IN2D4P88GND_1389IN1D1N90IN1D1P91VCC_1092IN1D2N93IN1D2P94GND_1495IN1D3N96IN1D3P97VCC_1198IN1D4N99IN1D4P100GND_15

R793

0

R782

0

R7201K

R7211K

R7171K

R7481K

R7019

2.7K

R7020

2.7K

R7021

0

OPT

PS421_RST

SIDE HDMI

UI_HW_PORT3

UI_HW_PORT1

UI_HW_PORT2

UI_HW_PORT4

Copyright ©

2008 LG E

lectronics. Inc. All right reserved.

Only for training and service purposes

LGE

Internal Use O

nly

Page 41: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

Fiber Optic

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

AMP

COMP1_R_IN

R805680K

R816680K

+5V_GENERALR81810K

+5V_GENERAL

C8032.2uF50V

COMP_L

C8122.2uF50V

COMP2_L_IN

+5V_GENERAL

R812680K

COMP1_L_IN

IC801MC74HC4066ADR2G

3YB

2YA

4XB

1XA

6CONTROL_C

5CONTROL_B

7GND

8XC

9YC

10YD

11XD

12CONTROL_D

13CONTROL_A

14VCC

+5V_GENERAL

COMP2_R_IN

+5V_GENERAL

C8042.2uF50V

R813680K

R815680K

R806680K

COMP_SELR817 0

COMP_R

C8132.2uF50V

+5V_GENERAL

R807680K

R814680K

R80310K

Q8002SC3052

E

B

C

+5V_GENERAL

R8040

R80210K

COMP_SEL

0.1uFC843

50V

C823

22000pF50V

R808

100

SDA_EYEQ/AMP

001:B25;007:AD7;010:O14

C8050.1uF50V

R830

5.6

L804DA-8580EAP38319001

2S

1S 1F

2F

R831

5.6

AUDIO_MASTER_CLK

R829

5.6

C82022000pF50V

0.1uFC827

50V

+1.8V_AMP

+3.3V_CI

C8181uF10V

+1.8V_AMP

R836

4.7K

L802

MLB-201209-0120P-N2

D804

100V

1N4148W

R828

5.6

AMP_RST

C8351000pF50V

0.1uFC842

50V

R840

3.3

R823

0

OPT

R827

5.6OPT

0.1uFC822

50V

+5V

C8321000pF50V

OPT

0.1uF

C829

50V

+5V

D801

100V

1N4148W

0.01uFC817

50V

R811 100

OPT

R825

5.6

OPT

SCL_EYEQ/AMP

C8211uF16V

+15V_AMP

MS_LRCK

SPK_R+

C8380.47uF50V

0.1uFC808

50V

0.01uFC854

50V

R809

3.3K

0.01uFC852

50V

C8341000pF50V

MS_LRCH

L803MBW3216-501TF

R834

4.7K

C80610uF6.3V

+15V_AMP

C819330uF25V

SPDIF_OUT

0.1uF

C828

50V

R8011K

C8390.47uF50V

JK801

JST1223-001

1

GND

2

VCC

3

VINPUT

4

FIX_POLE

C81622000pF

50V

SPK_L+

MUTE 001:H25

+15V_AMP

C8371000pF50V

ZD801

OPT

0.1uFC811

50V

SPK_L-

R8193.3

R810 100

OPT

R835

4.7K

D803

100V

1N4148W

R838

3.3

+1.8V_AMP

P801

SMAW250-04

1

2

3

4

R822

0

R841

3.3

+1.8V_AMP

R837

4.7K

0.01uFC851

50V

L801

C8101000pF50V

L805DA-8580EAP38319001

2S

1S 1F

2F

+15V_AMP

SPK_R-

0.1uF

C845

50V

C8361000pF50V

+15V_AMP

R820120K

OPT

AC_DET 001:H23;009:E15

D802

100V

1N4148W

MS_SCK

+15V

C807

100pF50V

0.1uF

C844

50V

0.1uFC815

50V

0.01uF

C853

50V

C82622000pF

50V

C8331000pF50V

OPT

R826

5.6

OPT

C8020.1uF50V

R839

3.3

+15V_AMP

C8091000pF

50V

+15V_AMP

+15V_AMP

R824

5.6

OPT

C80110uF6.3V

C8311000pF50V

OPT

C8301000pF50V

OPT

C8251uF16VC814

1uF 10V

0.1uFC824

50V SPK_R-

SPK_R+

SPK_L-

SPK_L+

R859

0

OPT

R860

0

IC802

NTP3000A

EAN41584001

1BST1A

2VDR1A

3/RESET

4AD

5VSS_IO

6CLK_I

7CLK_O

8VDD_IO

9DGNDPLL

10AGNDPLL

11LFM

12AVDDPLL

13DVDDPLL

14NC_1

15

DVSS

16

DVDD

17

SDATA

18

WCK

19

BCK

20

SDA

21

SCL

22

PWM_3B/PWM_HP2

23

PWM_3A/PWM_HP1

24

PROTECT

25

FAULT

26

VDR2B

27

BST2B

28

PGND2B_1

29 PGND2B_230 OUT2B_131 OUT2B_232 PVDD2B_133 PVDD2B_234 PVDD2A_135 PVDD2A_236 OUT2A_137 OUT2A_238 PGND2A_139 PGND2A_240 BST2A41 VDR2A42 NC_2

43

VDR1B

44

BST1B

45

PGND1B_1

46

PGND1B_2

47

OUT1B_1

48

OUT1B_2

49

PVDD1B_1

50

PVDD1B_2

51

PVDD1A_1

52

PVDD1A_2

53

OUT1A_1

54

OUT1A_2

55

PGND1A_1

56

PGND1A_2

C8460.1uFYAMAHA

GND

P_+16V_AMP_IN

R857 0

YAMAHA

C848 0.1uFYAMAHA

C850

1uF

25V

YAMAHA

R854

100OPT

R855 0

YAMAHA

MUTE_YAMAHA

GND

+3.3V_CI

C856

1uF

25V

YAMAHA

P_+16V_AMP_IN

GND

C840 1uF 25V

YAMAHA

R853 0

YAMAHA

R851200K

YAMAHA

R85068K

YAMAHA

R856 0

YAMAHA

C855

1uF

25V

YAMAHA

C841 1uF 25VYAMAHA

GND

R844120K1%

YAMAHA

C847 1uFYAMAHA

P_+16V_AMP_IN

P_+16V_AMP_IN

SPK_N

R845100K1%

YAMAHA

L_SOUND_N

P_+16V_AMP_IN

P_+16V_AMP_IN

R_SOUND_P

P_+16V_AMP_IN

GND

L810YAMAHA

R_SOUND_N

C849

1uF

25V

YAMAHA

+15V

GND

L_SOUND_P

SPK_P

IC803YDA148-EZ

YAMAHA

1PVDDREG

3INLP

7INRP

9PLIMIT

10

PVDDPR

11

OUTPR_1

12

OUTPR_2

13

PVSSR

14

OUTMR_1

15

OUTMR_2

16

PVDDMR

17 SLEEPN

18 PROTN

19 MUTEN

20 CKOUT

21 CKIN

22 NCDRC0

23 NCDRC1

24 GAIN0

25 GAIN1

26

PVDDML

27

OUTML_1

28

OUTML_2

29

PVSSL

30

OUTPL_1

31

OUTPL_2

32

PVDDPL

5VREF

8AVSS

6INRM

4INLM

2AVDD

R842 68K

1%YAMAHA

R843 1K

1%YAMAHA

R83210K

YAMAHA

R83310K

YAMAHA

R852

100OPT

L_SOUND_N

L_SOUND_P

R_SOUND_P

R_SOUND_N

R849

0

YAMAHA

R846

0

YAMAHA

R847

0

YAMAHA

R848

0

YAMAHA

YAMAHA_GAIN1 001:H26

YAMAHA_GAIN0 001:H27

+12V

L811

OPT

JP8005

JP8007

JP8006

JP8008

JP8003

JP8004

JP8001

JP8002

C121110uF6.3V

OPT

R8211.1K

GND

R8611K

YAMAHA

PS421/NTP_SDA

001:H24;007:AD5

PS421/NTP_SCL

R862 100

R863 100

L806120-ohm

L808120-ohm

L809120-ohm

L807120-ohm

AUDIO SWITCH

SPEAKER_R

SPEAKER_L

SPDIF OPTIC JACK

L

L

H,H

SPK LL,H

H

46dB

Output

Gain

GAIN[1:0]

34dB

HP

28dB

H,L

Speaker

AMPL,L

SPK R

40dB

Mute

X

MUTEN

Copyright ©

2008 LG E

lectronics. Inc. All right reserved.

Only for training and service purposes

LGE

Internal Use O

nly

Page 42: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

POWER

C938100uF16V

C9330.1uF50V

C983

0.01uF50V

C9640.01uF50V

+3.3V_AVDD_ADC

C9810.01uF50V

C9870.1uF50V

+3.3V_AVDD

+5V

C9860.1uF50V

C9130.1uF50V

+3.3V_AVDD_MEMPLL

+2.5V_DDR

C982

0.01uF50V

C9400.1uF50V

C9710.1uF50V

C990100uF16V

C9910.1uF50V

PANEL_POWER

+3.3V_AVDD_LPLL

+5V_ST

+3.3V_VDDP_ST

+5V

006:AG26;008:D28;008:E28;009:M14;009:V11;009:Y8+2.5V

Q905SI4925BDY

3S2

2G1

4G2

1S1

5 D2_1

6 D2_2

7 D1_1

8 D1_2

+3.3V_IR

+12V

+3.3V_AVDD_SIF

C9800.1uF50V

C9780.01uF50V

C9720.1uF50V

+3.3V_AVDD_AU

C9690.1uF50V

C9630.01uF50V

C9680.1uF50V

+3.3V_AVDD_MPLL

PANEL_CTL

001:E29

C9790.1uF50V

C9660.01uF50V

C9890.1uF50V

+3.3V_AVDD_DVI

+5V_ST

+5V_ST

C9390.1uF50V

R90310K

OPT

C930100uF16V

R90210K

C9670.1uF50V

C9110.01uF

50V

C9880.1uF50V

+3.3V_VDDP

C9850.1uF50V

+2.5V

IC904

AZ1085S-3.3TR/E1

1

ADJ/GND

2 OUTPUT3INPUT

C9620.01uF50V

C918100uF16V

RL_ON

001:B27;009:E16

C9840.01uF50V

C9260.1uF50V

+5V_GENERAL

+5V

C9750.1uF50V

C9610.1uF50V

C973100uF16V

C960100uF16V

+3.3V_AVDD

C9650.01uF50V

C9700.1uF50V

+3.3V_AVDD_OTG

+2.5V_VDD_DDR

C9760.1uF50V

C9770.1uF50V

C9360.1uF50V

+3.3V_TU

C935100uF16V

C941100uF16V

C9430.1uF50V

+5V

R927

OPT

+3.3V_CI

C9510.1uF50V

C9520.1uF50V

C9460.1uF50V

+1.8V_TU

+3.3V_VDDP_ST

+3.3V_VDDP_ST C9550.1uF50V

C95610uF16V3216

C9490.01uF50V

C9540.1uF50V

+1.25V_VDDC

C9530.01uF50V

+1.25V_AVDD_DVI

+1.25V_ST

+1.25V_ST

R9250

3216

R9240

3216

C9480.1uF50V

C97410uF16V

R9230

+5V_GENERAL

C942100uF16V

R926

0

R90722K

R90822K

R90410K

IC903

AZ1085S-ADJTR/E1

1

ADJ/GND

2 OUTPUT3INPUT

C931100uF16V

C9340.1uF50V

C9290.1uF50V

C937330uF16V

C9320.1uF50V

C928100uF16V

C9570.1uF50V

+3.3V_VDDP_ST

+3.3V_VDDP_ST

+3.3V_VDDP_STIC905

AZ1117D-3.3TRE1

1

ADJ/GND

2 OUTPUT3INPUT

IC909

AZ1117D-3.3TRE1

1

ADJ/GND

2 OUTPUT3INPUT

IC910

AZ1117D-2.5TRE1

1

ADJ/GND

2 OUTPUT3INPUT

IC907

AZ1117D-1.8TRE1

1

ADJ/GND

2 OUTPUT3INPUT

C958100uF16V

+1.8V_AMP

C9450.1uF50V

IC908

AZ1117D-1.8TRE1

1

ADJ/GND

2 OUTPUT3INPUT

C9590.1uF50V

L910MBW3216-501TF

L906MBW3216-501TF

L919MBW3216-501TF

L908MBW3216-501TF

L907MBW3216-501TF

L914MBW3216-501TF

L909MBW3216-501TFL905

MBW3216-501TF

OPT

L917MBW3216-501TF

L915MBW3216-501TF

L918MBW3216-501TF

L911MBW3216-501TF

L913MBW3216-501TF

L916MBW3216-501TF

L904MBW3216-501TF

L912MBW3216-501TF

Q9022SC3052

E

B

C

Q9042SC3052

E

B

C

Q9032SC3052

E

B

C

R906560

R90510K

C916

10uF

OPT

C921

0.1uF50V

OPT

C922

0.1uF50V

C90847uF16V

C9010.1uF50V

C9124.7uF10VOPT

C9090.1uF16V

IC902KIA7805AF

2

C

3 O1I

+5V_TU

C9100.1uF16V

+12V003:Z14;006:AB17;008:Z12;009:A8;009:H19

P902

SMAW200-24C

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

L903

C9050.1uF

16V

C919100uF16V

C9230.1uF16V

+12V

L901CB4532UK121E

+5V_ST

C907330uF25V

C9201uF25V

C904330uF25V

+15VL902CB4532UK121E

R9110

5V_MNT

001:H26

4.7K R916NON_52"Sharp

C9030.1uF

16V

AC_DET

008:S16;001:H23

RL_ON

001:B27;009:B5

0R912 OPTINV_CTL

001:H25;009:K17

INV_CTL

001:H25;009:H14

R91810KOPT

+5V_GENERAL

R913100

R91410K

+5V_GENERAL

Q9012SC3052

E

B

C

R91710K

R91510K

PWM_DIM

001:G12

0R901

R90947K

R91047K

C9171uF

35V

C9930.1uF50V

C9920.01uF50V

+3.3V_HDMI_STL921

MBW3216-501TF

R9220

1/4W5%

R9210

1/4W5%

R9280

C92710uF16V

L920MBW3216-501TF

C902100uF16V

1uF

C90616V

R929 5.1K A_DIM

001:B6;001:G12

C914100uF16V

JP9010

JP9011

JP9009

JP9008

JP9012

JP9002 JP9005

JP9004

JP9001

JP9006

R91951

5%

R9203.3K1%

JP902

JP901

C9250

52"Sharp

C924100uF16V

C915100uF16V

DC-DC CONVERTER

Stand-by +3.3V_+1.25V_MST_Core

TUNER_CI +3.3V_+1.8V_+1.5V

+5V_+12V

+2.5V_DDR

+3.3V_MST

R1R2

V0 = 1.25(1+R2/R1)

Copyright ©

2008 LG E

lectronics. Inc. All right reserved.

Only for training and service purposes

LGE

Internal Use O

nly

Page 43: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FORTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

C12041000pF50V

OPT

C12050.1uF50V

R1203100 1%

C1206100pF50V

R12080

OPT

L1004BG2012B080TF

OPT

C12081000pF50V

LED_R001:G12

SDA_EYEQ/AMP

KEY1

001:J13

EYEQ_RESET001:H27

GND-EMI

R12090

C12070.1uF

50V PWM_LED001:B6;001:G12

C12030.1uF50V

L1010BG2012B080TF

L1008BG2012B080TF

L1003BG2012B080TF

OPT

GND-EMI

R1204100 1%

R12020

OPT

R12010

OPT

L1005BG2012B080TF

+3.3V_VDDP_ST

+5V_ST

IR001:H22

L1009BG2012B080TF

L1002BG2012B080TF

R12110

OPT

LED_G001:H24

KEY2

L1006BG2012B080TF

SCL_EYEQ/AMP

008:H16;001:B25;007:AD7

C1202

1000pF

50V

+3.3V_IR009:X18

C1201

0.1uF50V

SPK_N

SPK_P

R12140

L1001BLM18AG221SN1D

L1007BLM18AG221SN1D

C1209100pF50V

OPT

R12054.7K

R12064.7K

ZD1200

5.6B

P1001

12505WS-15A00

1 NC SCL

2 NC SDA

3 GND

4 GND

5 KEY1

6 KEY2

7 NC 3.3V_SW

8 5V_ST

9 PWM_LED

10 IR

11 NC RESET

12 GND

13 LED_G

14 LED_R/PWM

16

GND

15 GND

R1212100

R1213100

JP1007

JP1001

JP1008

JP1004

JP1005

JP1010

JP1011

JP1003

JP1002

JP1009

JP1012

ZD12075.6B

C12125pF50V

C12135pF50V

R1207

100KYAMAHA

R1210

100KYAMAHA

JP1006

R1210-*110K NON_YAMAHA

IR & LED

CONTROL

Copyright ©

2008 LG E

lectronics. Inc. All right reserved.

Only for training and service purposes

LGE

Internal Use O

nly

Page 44: LCD TV SERVICE MANUAL - Turuta Electronics World · LCD TV SERVICE MANUAL CAUTION ... When the exposed metal has no return path to the chassis the ... Remove the defective transistor

Jun., 2008Printed in KoreaP/NO : MFL42276206