Lg 42lh40ed[-Sa] 42lh45ed[-Sb] Chassis Lj92j

8/10/2019 Lg 42lh40ed[-Sa] 42lh45ed[-Sb] Chassis Lj92j

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LCD TV

SERVICE MANUAL

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

CHASSIS : LJ92J

MODEL : 42LH40ED 42LH40ED-SA

42LH45ED 42LH45ED-SB

North/Latin America http://aic.lgservice.comEurope/Africa http://eic.lgservice.comAsia/Oceania http://biz.lgservice.com

Internal Use Only

Printed in KoreaP/NO : MFL58893601 (0912-REV01)


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LGE Internal Use OnlyCopyright 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 ...............................................................14

TROUBLE SHOOTING............................................................................17

BLOCK DIAGRAM...................................................................................58

EXPLODED VIEW .................................................................................. 59

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


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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 Exploded View.It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent

Shock, Fire, or other Hazards.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 electrical

shock.

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, phone

jacks, etc.If the exposed metallic part has a return path to the chassis, themeasured resistance should be between 1M and 5.2M.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 voltage

measured 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 InstrumentsexposedMETALLIC PARTS

Good Earth Groundsuch as WATER PIPE,

CONDUIT etc.

AC Volt-meter

When 25A is impressed between Earth and 2nd Groundfor 1 second, Resistance must be less than 0.1*Base on Adjustment standard

IMPORTANT SAFETY NOTICE

0.15uF


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CAUTION: Before servicing receivers covered by this servicemanual and its supplements and addenda, read and follow theSAFETY PRECAUTIONSon page 3 of this publication.NOTE: If unforeseen circumstances create conflict between the

following servicing precautions and any of the safety precautions on

page 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 which

receivers 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) Devices

Some semiconductor (solid-state) devices can be damaged easily

by 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 500F to 600F.

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.

(500F to 600F)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

(500F to 600F)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 f lows 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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IC Remove/Replacement

Some 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.

Removal

1. Desolder and straighten each IC lead in one operation by gentlyprying 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.

Replacement

1. 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 Transistor

Removal/Replacement

1. Remove the defective transistor by clipping its leads as close aspossible to the component body.

2. Bend into a "U" shape the end of each of three leads remainingon 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 Device

Removal/Replacement

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

Diode Removal/Replacement

1. Remove defective diode by clipping its leads as close aspossible to diode body.

2. Bend the two remaining leads perpendicular y to the circuitboard.

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

Removal/Replacement

1. Clip each fuse or resistor lead at top of the circuit board hollowstake.

2. Securely crimp the leads of replacement component aroundnotch 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 Repair

Excessive 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 Connections

To 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 Connections

Use 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 the

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

4. Electrical specification

4.1 General Specification

1. Application rangeThis specification is applied to the LCD TV used LJ92Jchassis.

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

1) Temperature : 255C (779F), CST : 405C2) Relative Humidity : 6510%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 specification by part number inaccordance with BOM.

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

3. Test method1) Performance: LGE TV test method followed2) Demanded other specification

- Safety: UL, CSA, IEC specification, CE

- EMC: FCC, ICES, IEC specification, CE

No Item Specification Remark1. Receiving System 1) SBTVD / NTSC / PAL-M / PAL-N

2.

Available Channel 1) VHF : 02~132) UHF : 14~693) DTV : 02-694) CATV : 01~135

3. Input Voltage 1) AC 100 ~ 240V 50/60Hz Mark : 110V, 60Hz4. Market Central and South AMERICA

5.Screen Size 42 inch Wide (1920 X 1080)

47 inch Wide (1920 X 1080)42LH40ED-SA47LH40ED-SA

6. Aspect Ratio 16:97. Tuning System FS

8. Module LC420WUE-SBC1 (VITIAZ 4)LC470WUE-SBB1 (VITIAZ4)

42LH40ED-SA47LH40ED-SA

9.Operating Environment 1) Temp : 0 ~ 40 deg

2) Humidity : ~ 80 %

10.Storage Environment 1) Temp : -20 ~ 60 deg

2) Humidity : ~ 85 %


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

5. Chromiance & Luminance spec.

No Item Min Typ Max Unit RemarkModule cd/m LC420WUE-SBC11. Max Luminance

(Center 1-point / Full WhitePattern)

Set400 500

400 500 cd/m

2.3.

Luminance uniformity 77 % Full white0.638

0.334

4.5.

RED

0.2900.606

6.7.

GREEN

0.1440.064

8.9.

BLUE

0.27910.

Color

coordinate

WHITE

Y

X

YX

YX

YX

Typ.

-0.03

0.292

Typ.

+0.03

11. Color coordinate uniformity N/A700:1 1000:1 NORMALContrast ratio7000:1 10000:1 DCR

Cool

0.281

0.274 0.276

0.283

0.278

0.285

Standard0.2910.283

0.311

0.2850.293

0.2870.295

12. Color

Temperature

Warm0.327

0.3130.329

0.3150.331

85% Full white pattern** The W/B Tolerance is

0.015 for AdjustmentDynamic contrast : offDynamic color : offOPC : off

13. Color Distortion, DG 10.0 %14. Color Distortion, DP 10.0 deg15. Color S/N, AM/FM 43.0 dB16. Color Killer Sensitivity -80 dBm

6. Component Input (Y, CB/PB, CR/PR)No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed1. 720*480 15.73 60 13.5135 SDTV ,DVD 480I2. 720*480 15.73 59.94 13.5 SDTV ,DVD 480I3. 720*480 31.47 60 27.027 SDTV 480P4. 720*480 31.47 59.94 27.0 SDTV 480P5. 1280*720 45.00 60.00 74.25 HDTV 720P6. 1280*720 44.96 59.94 74.176 HDTV 720P7. 1920*1080 33.75 60.00 74.25 HDTV 1080I8. 1920*1080 33.72 59.94 74.176 HDTV 1080I9. 1920*1080 67.500 60 148.50 HDTV 1080P10. 1920*1080 67.432 59.939 148.352 HDTV 1080P11. 1920*1080 27.000 24.000 74.25 HDTV 1080P12. 1920*1080 26.97 23.94 74.176 HDTV 1080P13. 1920*1080 33.75 30.000 74.25 HDTV 1080P14. 1920*1080 33.71 29.97 74.176 HDTV 1080P15. 1920*1080 56.25 50.000 148.5 HDTV 1080P

16. 1920*1080 28.125 25.000 74.25 HDTV 1080P


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7. RGB Input (PC)

No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed

PC DDC

1. 640*350 31.468 70.09 25.17 EGA X

O

O

O

OO

O

O

O

O

O

2. 720*400 31.469 70.08 28.32 DOS

3. 640*480 31.469 59.94 25.17 VESA(VGA)

4. 800*600 35.156 56.25 36.00 VESA(SVGA)

5. 800*600 37.879 60.31 40.00 VESA(SVGA)6. 1024*768 48.363 60.00 65.00 VESA(XGA)

7. 1280*768 47.776 59.870 79.5 CVT(WXGA)

8. 1360*768 47.712 60.015 85.50 VESA (WXGA)

9. 1280*1024 63.981 60.020 108.00 VESA

10. 1600*1200 75.00 60.00 162 VESA (UXGA)

11 1920*1080 67.5 60 148.5 HDTV 1080P

** RGB PC Monitor Range Limits- Min Vertical Freq - 56 Hz- Max Vertical Freq - 62 Hz- Min Horiz. Freq - 30 kHz- Max Horiz. Freq - 80 kHz- Pixel Clock - 170 MHz

8. HDMI Input (PC/DTV)

No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) ProposedPC DDC

1 640*350 31.468 70.09 25.17 EGA X

OOOOOOO

OOO

2 720*400 31.469 70.08 28.32 DOS3 640*480 31.469 59.94 25.17 VESA(VGA)4 800*600 35.156 56.25 36.00 VESA(SVGA)5 800*600 37.879 60.31 40.00 VESA(SVGA)6 1024*768 48.363 60.00 65.00 VESA(XGA)7 1280*768 47.776 59.870 79.5 CVT(WXGA)8 1360*768 47.712 60.015 85.50 VESA (WXGA)

9 1280*1024 63.981 60.020 108.00 VESA (SXGA)10 1600*1200 75.00 60.00 162 VESA (UXGA)11 1920*1080 66.587 59.934 138.5 HDTV 1080P

DTV1 720*480 31.47 60 27.027 SDTV 480P2 720*480 31.47 59.94 27.00 SDTV 480P3 1280*720 45.00 60.00 74.25 HDTV 720P4 1280*720 44.96 59.94 74.176 HDTV 720P5 1920*1080 33.75 60.00 74.25 HDTV 1080I6 1920*1080 33.72 59.94 74.176 HDTV 1080I7 1920*1080 67.500 60 148.50 HDTV 1080P8 1920*1080 67.432 59.939 148.352 HDTV 1080P9 1920*1080 27.000 24.000 74.25 HDTV 1080P

10 1920*1080 26.97 23.94 74.176 HDTV 1080P11 1920*1080 33.75 30.000 74.25 HDTV 1080P12 1920*1080 33.71 29.97 74.176 HDTV 1080P

17. 1920*1080 56.25 50.000 148.5 HDTV 1080P18. 1920*1080 28.125 25.000 74.25 HDTV 1080P

** HDMI Monitor Range Limits- Min Vertical Freq - 56 Hz- Max Vertical Freq - 62 Hz- Min Horiz. Freq - 30 kHz- Max Horiz. Freq - 80 kHz- Pixel Clock - 170 MHz


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9. Consignment Setting (OUTGOING CONDITION)

10. Mechanical Specification

No Item Condition1. Input Mode TV02CH2. Volume Level 103. Mute Off4. Aspect Ratio 16:95. System Color PAL-M

6 Booster OnPicture Mode Vivid

BacklightContrastBrightnessSharpnessColor 70

70

0

0

10010050

TintColor Temperature Cool

7. Picture

Picture ResetSound Mode StandardAuto Volume OffClear Voice OffSRS TruSurround XT Off

Balance

8. Audio

TV Speaker On

On

Clock Auto9. TimeOff Timer / On TimerSleep Timer / Auto Sleep

Off

Language (Menu/Audio) PortuguesSimpLinkKey Lock Off

OffCaption

10. Option

Set ID 111. Channel Memory RF : 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,

14, 30, 51, 63CATV : 15, 16, 17

No. Item Content Unit RemarkWidth (W) Length (D) Height (H) mm

721.31036 296.2

1036 89.8

1330 228

mm With StandBefore Packing

655.4 mm Without Stand1.

ProductDimension

After Packing 770 mm With Stand

19.5kg With StandOnly SET

17.7Kg Without Stand2.ProductWeight

With BOX 24.0kg Kg

Kg

Kg

With Stand

40ft 40ft(H-CUBIC)

Indi. Woo den Indi. Wooden3.

ContainerLoadingQuantity

Individual or Palletizing

270 - 270 -

4. Stand AssySwivel Degree

Swivel ForceSwivel(+/- 20degree)

1.5 Kgf(0.8Kgf ~ 2.5Kgf)5. Appearance General Refer to Standard of LG(56)G4-9002


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ADJUSTMENT INSTRUCTION

1. Application Range

This specification sheet is applied all of the LJ91D, LJ92JLCD TV models, which produced in manufacture departmentor similar LG TV factory.

2. Notice

1) Because this is not a hot chassis, it is not necessary to usean isolation transformer. However, the use of isolationtransformer will help protect test instrument.

2) Adjustment must be done in the correct order. But it isflexible when its factory local problem occurs. .

3) The adjustment must be performed in the circumstance of25 5C of temperature and 6510% of relative humidity ifthere is no specific designation.

4) The input voltage of the receiver must keep 100~220V,50/60Hz.

5) Before adjustment, execute Heat-Run for 5 minutes.

After Receive 100% Full white pattern (06CH) then processHeat-run

(or 8. Test pattern condition of Ez-Adjust status) How to make set white pattern

1) Press Power ON button of Service Remocon2) Press ADJ button of Service remocon. Select 8. Test

pattern and, after select White using navigation button,and then you can see 100% Full White pattern.

* In this status you can maintain Heat-Run useless anypattern generator

* Notice: if you maintain one picture over 20 minutes

(Especially sharp distinction black with white pattern 13Ch, or Cross hatch pattern 09Ch) then it can appearimage stick near black level.

3. Adjustment Items

3.1 PCB Assembly adjustment CPLD DOWNLOAD Adjust 480i Comp1 Adjust 1080p Comp1/RGB

- If it is necessary, it can adjustment at Manufacture Line- You can see set adjustment status at 1. ADJUST

CHECK of the In-start menu

3.2 Set Assembly Adjustment EDID (The Extended Display Identification Data ) / DDC

(Display Data Channel) download Color Temperature (White Balance) Adjustment Make sure RS-232C control Selection Factory output option

4. PCB Assembly Adjustment

4.1. CPLD DOWNLOAD : JTAG MODE

4.2. > PIN MAP

Pin JTAG Mode Signal Name2 TCK

3 TMS

8 TDI

11 TDO

13 -

15 VCC

18 TO 25 GND


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4.3. > PIN MAP


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4.4. Using RS-232CAdjust 3 items at 3.1 PCB assembly adjustments 4.1.3

sequence one after the order.

O Adjustment protocol

See ADC Adjustment RS232C Protocol_Ver1.0

O Adjustment protocol- Pattern Generator : (MSPG-925FA)- Adjust 480i Comp1 (MSPG-925FA : model :209 , pattern

: 65)- Adjust 1080p Comp1/RGB(MSPG-925FA:model : 225 ,

pattern : 65)

- Adjust RGB (MSPG-925FA:model :225 , Pattern :65) RGB-PC Mode

* If you want more information then see the below Adjustmentmethod (Factory Adjustment)

O Adjustment sequence- ad 00 00 : Enter the ADC Adjustment mode.- xb 00 40: Change the mode to Component1 (No actions)- ad 00 10: Adjust 480i Comp- ad 00 10: Adjust 1080p Comp- xb 00 60: Change to RGB-PC mode(No action)- ad 00 10: Adjust 1080p RGB- ad 00 90: End of the adjustment

Order Command Set response

1. Inter the ad 00 00 d 00 OK00x

Adjustment mode

2. Change the kb 00 40 b 00 OK40x (Adjust 480i Comp1/1080p Comp1)

Source kb 00 60 b 00 OK60x (Adjust 1080p RGB)

3.Start Adjustment ad 00 10

4.Return the OKx ( Success condition )

Response NGx ( Failed condition )

5.Read (main) (main : component1 480i, RGB 1080p)

Adjustment data ad 00 20 000000000000000000000000007c007b006dx

(main) (main : component1 1080p)

ad 00 30 000000070000000000000000007c00830077x

6.Confirm ad 00 99 NG 03 00x (Failed condition)

Adjustment NG 03 01x (Failed condition)

NG 03 02x (Failed condition)

OK 03 03x (Success condition)

7. End of Adjustment ad 00 90 d 00 OK90x


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5. Factory Adjustment

5.1 Manual Adjust Component 480i/1080pRGB 1080p

O Summary : Adjustment component 480i/1080i and RGB1080p is Gain and Black levelsetting at Analog

to Digital converter, and compensate the RGBdeviation

O Using instrument- Adjustment remocon, 801GF(802B, 802F, 802R) or

MSPG925FA pattern generator (It can output 480i/1080ihorizontal 100% color bar pattern signal, and its outputlevel must setting 0.7V0.1V p-p correctly)

* You must make it sure its resolution and pattern cause everyinstrument can have different setting

O Adjustment method 480i Comp1, Adjust 1080pComp1/RGB (Factory adjustment) ADC 480i Component1 adjustment- Check connection of Component1- MSPG-925FA Model: 209, Pattern 65

Set Component 480i mode and 100% Horizontal ColorBar Pattern(HozTV31Bar), then set TV set toComponent1 mode and its screen to NORMAL

ADC 1080p Component1 / RGB adjustment- Check connection both of Component1 and RGB- MSPG-925FA Model: 225, Pattern 65

Set Component 1080p mode and 100% Horizontal ColorBar Pattern(HozTV31Bar), then set TV set toComponent1 mode and its screen to NORMAL

After get each the signal, wait more a second and enterthe IN-START with press IN-START key of Serviceremocon. After then select 7. External ADC withnavigator button and press Enter.

After Then Press key of Service remocon RightArrow(VOL+)

You can see ADC Component1 Success Component1 1080p, RGB 1080p Adjust is samemethod.

Component 1080p Adjustment in Component1 inputmode

RGB 1080p adjustment in RGB input mode If you success RGB 1080p Adjust. You can see ADC

RGB-DTV Success

5.2 EDID (The Extended Display

Identification Data) / DDC (Display DataChannel) Download.

O Summary It is established in VESA, for communication between

PC and Monitor without order from user for building usercondition. It helps to make easily use realize Plug andPlay function.

For EDID data write, we use DDC2B protocol.

O Auto Download After enter Service Mode by pushing ADJ key, Enter EDID D/L mode.

Enter START by pushing OK key.

Caution: - Never connect HDMI & D-sub Cable when the userdownloading .

- Use the proper cables below for EDID Writing.


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O Manual Download

Write HDMI EDID data- Using instruments

=> Jig. (PC Serial to D-Sub connection) for PC, DDCadjustment.

=> S/W for DDC recording (EDID data write andread)

=> D-sub jack=> Additional HDMI cable connection Jig.

- Preparing and setting.=> Set instruments and Jig. Like pic.5), then turn on

PC and Jig.=> Operate DDC write S/W (EDID write & read)=> It will operate in the DOS mode.

Pic.3) For write EDID data, setting Jig and another instruments.

EDID data for LJ91D Chassis (Model name = LG TV)- HDMI-1 EDID table (0x33, 0x2C)

- HDM2 EDID table (0x33, 0x1C)

- HDMI-3 EDID table (0x33, 0x0C)

- Analog (RGB) EDID table (0x9B, 0x25)

PC

Download jig

RGB cable

Main

B/D

Edid data and Model option download (RS232)

NO Item CMD 1 CMD 2 Data 0

Enterdownload MODE

DownloadMode In A E 0 0

When transfer the Mode In ,

Carry the command.

Edid data andModeloption

downloadDownload A E *Note1 *Note2

Automatically download

(The use of a internal Data)

Adjust Mode Out A E 9 0

AdjustmentConfirmation A E 9 9

To check Downloadon Assembly line.

See Working Guide if you want more information aboutEDID communication.


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5.3 Adjustment Color Temperature(Whitebalance)

O Using Instruments Color Analyzer: CA-210 (CH 9)

- Using LCD color temperature, Color Analyzer (CA-210)must use CH 9, which Matrix compensated (White, Red,Green, Blue compensation) with CS-2100. See theCoordination bellowed one.

Auto-adjustment Equipment (It needs when Auto-adjustment It is availed communicate with RS-232C :Baud rate: 115200)

Video Signal Generator MSPG-925F 720p, 216Gray(Model: 217, Pattern 78)

O Connection Diagram (Auto Adjustment) Using Inner Pattern

Using HDMI input

.

O White Balance AdjustmentIf you cant adjust with inner pattern, then you can adjustit using HDMI pattern. You can select option at "Ez-AdjustMenu 7. White Balance" there items "NONE, INNER,HDMI". It is normally setting at inner basically. If you cantadjust using inner pattern you can select HDMI item, andyou can adjust.

In manual Adjust case, if you press ADJ button of service

remocon, and enter "Ez-Adjust Menu 7. WhiteBalance", then automatically inner pattern operates. (Incase of "Inner" originally "Inner" will be selected.

Connect all cables and equipments like Pic.5) Set Baud Rate of RS-232C to 115200. It may set

115200 orignally. Connect RS-232C cable to set Connect HDMI cable to set

RS-232C Command (Commonly apply)

wb 00 00 White Balance adjustment start.wb 00 10 Start of adjust gain (Inner white

pattern)wb 00 1f End of gain adjustwb 00 20 Start of offset adjust(Inner white

pattern)wb 00 2f End of offset adjustwb 00 ff End of White Balance adjust(Inner

pattern disappeared)

"wb 00 00": Start Auto-adjustment of white balance. "wb 00 10": Start Gain Adjustment (Inner pattern) "jb 00 c0" : "wb 00 1f": End of Adjustment

* If it needs, offset adjustment (wb 00 20-start, wb 002f-end)

"wb 00 ff": End of white balance adjustment (innerpattern disappear)


CA-100+

C O L O R

A N A L Y Z E R

T Y P E ; C A - 10 0+

F u l l W h i t e P a t t er n

RS-232C


16/76


O White Balance Adjustment (Manual adjustment) Test Equipment: CA-210

- Using LCD color temperature, Color Analyzer (CA-210) must use CH 9, which Matrix compensated(White, Red, Green, Blue compensation) with CS-2100. See the Coordination bellowed one.

Manual adjustment sequence is like bellowed one.- Turn to "Ez-Adjust" mode with press ADJ button of

service remocon.

- Select "10.Test Pattern" with CH+/- button and pressenter. Then set will go on Heat-run mode. Over 30minutes set let on Heat-run mode.

- Let CA-210 to zero calibration and must has gap more10cm from center of LCD module when adjustment.

- Press "ADJ" button of service remocon and select"7.White-Balance" in "Ez-Adjust" then press " "button of navigation key.

(When press " " button then set will go to full whitemode)

- Adjust at three mode (Cool, Medium, Warm)- If "cool" modeLet B-Gain to 192 and R, G, B-Cut to 64 and thencontrol R, G gain adjustment High Light adjustment.

- If "Medium" and "Warm" modeLet R-Gain to 192 and R, G, B-Cut to 64 and thencontrol G, B gain adjustment High Light adjustment.

- All of the three modeLet R-Gain to 192 and R, G, B-Cut to 64 and thencontrol G, B gain adjustment High Light adjustment.

- With volume button (+/-) you can adjust.- After all adjustment finished, with Enter ( key) turn

to Ez-Adjust mode. Then with ADJ button, exit fromadjustment mode

Attachment: White Balance adjustment coordination and colortemperature.

O Using CS-1000 Equipment.

- COOL : T=11000K, uv=0.000, x=0.276 y=0.283- MEDIUM : T=9300K, uv=0.000, x=0.285 y=0.293

- WARM : T=6500K, uv=0.000, x=0.313 y=0.329

5.4 Test of RS-232C control.Press In-Start button of Service Remocon then set the 4.BaudRate to 115200. Then check RS-232C control and

5.5 Selection of Country option.Selection of country option is allowed only North American model(Not allowed Korean model). It is selection of Country aboutRating and Time Zone.

Models: All models which use LA75A Chassis (See the firstpage.) Press In-Start button of Service Remocon, then enter the

Option Menu with PIP CH- Button Select one of these three (USA, CANADA, MEXICO)

defends on its market using Vol. +/-button.

6. GND and ESD Testing

6.1 Prepare GND and ESD Testing. Check the connection between set and power cord

6.2 Operate GND and ESD auto-test. Fully connected (Between set and power cord) set enterthe Auto-test sequence.

Connect D-Jack AV jack test equipment. Turn on Auto-controller(GWS103-4) Start Auto GND test. If its result is NG, then notice with buzzer. If its result is OK, then automatically it turns to ESD Test. Operate ESD test If its result is NG, then notice with buzzer. If its result is OK, then process next steps. Notice it with

Good lamp and STOPER Down.

6.3 Check Items. Test Voltage

- GND: 1.5KV/min at 100mA- Signal: 3KV/min at 100mA

Test time: just 1 second. Test point

- GND test: Test between Power cord GND and Signalcable metal GND.

- ESD test: Test between Power cord GND and Live andneutral.

Leakage current: Set to 0.5mA(rms)


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Copyright 2009 LG Electronics. Inc. All right reserved.Only for training and service purposes

1. Power-Up Boot Fail Trouble Shooting

Replace Power board

N Y

Check Micom IC407

Redownload or replace

Check P800 All Voltage Level

(20V, 12V, 5V_ST)Check Power connector

Y

Check Voltage Level 3.3V at L815N Replace one of

IC807/IC802/L815/L823/L810/L826

& Recheck

Y

N

Check Voltage Level 2.5V at L827N Replace one of IC803/L824/L827

& Recheck

N

Y

Check Voltage Level 1.8V

at IC804 #6 pin

N Replace one of IC804/L825

& Recheck

N

Y

Check Voltage Level 1.2V at L803N Replace one of

IC809/IC800/L803/L816/L819/L801

& Recheck

N

Y

Check X201 Clock 54MHzN

Replace X201

Y

Check signal transition

at IC101 #9 pin

N

Maybe BCM3556 has troubles

Replace IC101 Flash Memory

Y

Check All Voltage Level

at L804/L807/L808

N Replace one of L804/L807/L808

& Recheck

Y


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2. No OSD Trouble Shooting

Replace Power board

N YCheck 12V Voltage Level

at P800 #13 PinCheck Power connector

Y

Check 12V Voltage Level at L903N Replace one of

Q900/Q901/Q902/L903

& Recheck

Y

Check P903

#16(TXAC-), #17(TXAC+),

#32(TXBC-), #33(TXBC+)

N

Y

Check LVDS CableN

Replace Cable

Y

Check Voltage LCD Module

Check 12V Voltage Level

at L902

N Replace one of L804/L902

& Recheck

Y

Maybe BCM3556(IC100)

has troubles


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3. Digital TV Video Trouble Shooting

Check RF Cable

Y

Check TP Clock, Data, Sync

R1111, R1103, R1102

N Maybe Tuner(TU1100) has

problems

Y


has problems

Check Tuner(TU1100) Power

(5.0V, 2.5V, 3.3V, 1.2V)

N Replace one of

L1111/L1101/L1102/L1103/L1104

& Recheck

Y


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4. Analog TV Video Trouble Shooting

Check RF Cable

Y

Check CVBS Signal

TU1100 #9 Pin

N

Y

Check CVBS Signal

CXA2069(IC1102) #62 Pin

N Replace one of

C1160/R1139/C1128

& Recheck

Y

Check CVBS Signal

CXA2069(IC1102) #53 Pin

N Replace CXA2069(IC1102)

& Recheck

Y

Check CVBS Signal

C137

N Replace one of

R1190/Q1110/R195/C137

& Recheck

Y

N

Y

Check Tuner Power

(5.0V, 2.5V, 3.3V, 1.2V)

Replace one of

L1111/L1101/L1102/L1103/L1104

& Recheck

Maybe Tuner(TU1100) has

problems


has problems


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5. Component Video Trouble Shooting

Check Signal Format

Is it supported signal?

Y

Check Component Jack JK700N

Y

Check Component Signal

R774, R775, R776

R777, R778, R779

N Replace one of

R774/R775/R776/L700/L701/L702

R777/R778/R779/L703/L704/L705

& Recheck

Y

Check Component Signal

C127, C128, C129

C130, C131. C132

N Replace it

Y

Y

Check Component Cable

Replace Jack


has problems


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6. RGB Video Trouble Shooting

Check Signal Format


Y

Check RGB Jack JK701N

Y

Y

Check RGB Cable

Replace Jack

Check RGB Signal

L706, L707, L708

NReplace It & Recheck

Y

Check Sync Signal

IC1701 #11, #3

N Replace one of R747/R751/IC701

& Recheck

Y

Check EEPROM (IC700)N Replace it or re-burn

& Recheck

Y


has problems


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7. AV Video Trouble Shooting

Y

Check Jack JK700/JK704N

Y

Check CVBS Signal

CXA2069(IC1102) #1 Pin

CXA2069(IC1102) #22 Pin

N

Y

Check CVBS Signal

CXA2069(IC1102) #53 Pin

NReplace IC1102 & Recheck

Y

Check CVBS Signal

C137

N Replace one of

R1190/Q1110/R195/C137

& Recheck

Y

Y

Replace Jack


has problems

Check Signal Format


Check AV Cable

Replace one of

R721/R1142/C1134

R760/R1161/C1149

& Recheck

Checl IC1102 Power Level 9Vat L1110

N Replace It

Y


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8. HDMI Video Trouble Shooting

Check Signal Format


Y

Check HDMI Jack

JK500, JK501, JK503

N

Y

Y

Check HDMI Cable

Replace Jack

Check IC601 Voltage Level

+1.8V_HDMI, +3.3V_HDMI

N Replace one of

L601/L602/R665/R663

Y

Check I2C Signal

R670/R671/R605/R606/R616/R617

/R639/R642


Y


has problems


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9. All Source Audio Trouble Shooting

Make sure you cant hear any audio

Y

Check Connector P500N

Y

Y

Check Speaker

Replace Connector

Check Signal

L504, L506

N Replace one of

L508/L509/L510/L511/L504/L506

& Recheck

Y

Check IC500 Power

20V, 3.3V, 1.8V

L500,L501,L502,L503,IC504


Y

Check BCM3556 I2S Output

R148, R149, R150


Y


has problems

Replace SpeakerN

N Maybe NTP3100 has problems.

Replace It


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10. Digital TV Audio Trouble Shooting

Check video output

Y

Follow procedure All source audio

trouble shooting

Maybe BCM3556 internal audio

DSP has problems. Replace It

N

Follow procedure digital TV video

trouble shooting

N


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11. Analog TV Audio Trouble Shooting

Follow procedure analog TV video

trouble shooting

NCheck video output

Y

Check SIF Signal

TU1100 #8 Pin

N

Y

N

Y

Check SIF Signal

C141

N Replace one of R113/C141

& Recheck

Y


trouble shooting

N Maybe BCM3556 audio block has

problems. Replace It

N

Y

Check Tuner Power

(5.0V, 2.5V, 3.3V, 1.2V)

Replace one of

L1111/L1101/L1102/L1103/L1104

& Recheck


problems

Replace one of

L505/L514/C502/C511/Q500/Q502

IC501 & Recheck

Check SIF Signal

IC501 #4 Pin


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12. Component / RGB / AV Audio Trouble Shooting

Y

Check Jack JK700/JK703/JK704N

Y

Check Signal

CXA2069 #9, #11 Pin (Comp1)

CXA2069 #16, #18 Pin (Comp2)

CXA2069 #29, #31 Pin (RGB)

CXA2069 #2, #4 Pin (AV1)

CXA2069 #23, #25 Pin (AV2)

N

Replace Jack

Check Video Output

Replace one of

C1143/R1156/C1142/R1155

C1141/R1154/C1140/R1153

C1152/R1176/C1151/R1175

C1126/R1140/C1127/R1141

C1154/R1182/C1155/R1183

& Recheck

N Follow procedure external input

video trouble shooting

Y

Check Signal

CXA2069(IC1102) #52, #54 Pin

N

Y

Check Signal

C204, C205

N Replace one of

Q1100/Q1102/R202/C204/

R203/C205& Recheck

Checl IC1102 Power Level 9V

at L1110

NReplace It

Y

Replace IC1102 & Recheck

Y


trouble shooting




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13. HDMI Audio Trouble Shooting

Check video output

Y


trouble shooting

N

Y

Re-download EDID data

Maybe BCM3556 audio block has

problems. Replace it

NFollow procedure HDMI video

trouble shooting

NReplace IC601


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14. USB Trouble Shooting

Exception

- USB power could be disabled by inrushing current

- In this case, remove the device and try to reboot the TV (AC power off/on)

Check USB 2.0 Cable

Y

Check JK201N

Y

Y

Check USB device

If devuce is 2.5 inch HDD,

Check power adaptor

Replace Jack

Check 5V voltage level at L205N Replace one of

L205/IC3400 & Recheck

Y


has problems. Replace It.


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47/76


N

Y

Check Wafer P1201N

Replace It

Y

Check 1.8V voltage level

At IC1201 #2 Pin

N

Y

Check 25MHz Clock Frequency

at X1200

NReplace It

Y

Maybe IC1200 has problems

Replace It.

Check HDDN

Replace HDD

Y

Replace It

15. Digital TV Recording Fail Trouble Shooting

Check video/audio outputFollow procedure digital TV

video/audio trouble shooting

N Maybe BCM3556(IC100) USB

block has problems. Replace It.


48/76


49/76


Y

N

Y

Check CVBS Signal

C1007

N Replace one of

R1151/Q1106/R1149/C1007

& Recheck

Y

Check SIF Signal

C1015

N

Replace CXA2069(IC1102)

& Recheck

Y


R1313/R1305/R1307

N Re-Download PLD(IC1302) or

Replace it

Y

N

Y

Check Digital TV recordingFollow Digital TV recording fail

trouble shooting


at L1002/L1004

16. Analog TV Recording Fail Trouble Shooting

NFollow procedure analog TV

video/audio trouble shootingCheck video/audio output

Check CVBS Signal

CXA2069(IC1102) #41 Pin

Replace one of

L507/L518/C510/C549/Q501/Q503

IC503/C1015 & Recheck

NReplace it

Y


at L820

N Replace one of

L821/Q804/L820

Y


at

L1000/L1001/L1003/L1005/L1006

NReplace It

Y

Y

Maybe BCM3556(IC100) has some

problems. Replace It.

Reburn or replace IC1303

Check 54MHz Clock

at X1000

Check Signal Level 5V

at R1022


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51/76


Y

N

Y

Check CVBS Signal

C1070

N Replace one of

R1150/Q1105/R1145/C1070

& Recheck

Y

Check SIF Signal

C1015

N

Replace CXA2069(IC1102)

& Recheck

Y

N

Y

N

Y

Check Digital TV recordingFollow Digital TV recording fail

trouble shooting

Check 3.3V voltage levelat L1002/L1004

NFollow procedure AV video/audio

trouble shootingCheck video/audio output

Check CVBS Signal

CXA2069(IC1102) #44 Pin

Replace one of

L507/L518/C510/C549/Q501/Q503

IC503/C1015 & Recheck

NReplace it

Y


at L820

N Replace one of

L821/Q804/L820


at

L1000/L1001/L1003/L1005/L1006

Y

Y

Maybe BCM3556(IC100) has some

problems. Replace It.

Reburn or replace IC1303

Check 54MHz Clock

at X1000

Check Signal Level 5V

at R1022

17. AV Video Recording Fail Trouble Shooting

Check Signal

CXA2069(IC1102) #43, #45 Pin

Check Signal

R1008/R1009

N Replace one of

Q1107/Q1108/C1035/

C1037/R1008/R1009 & Recheck

Replace IC1102 & Recheck

Y

Y


52/76


53/76


Check RF Cable

Y


R1115, R1114, R1118

N Maybe Tuner(TU1101) has

problems

Y


has problems


(5.0V, 2.5V, 3.3V, 1.2V)

N Replace one of

L1106/L1105/L1107/L1109

& Recheck

Y

18. Digital TV Video Trouble Shooting while recording (Watch & Record)


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55/76


Check video output

Y


trouble shooting

Maybe BCM3556 internal audio

DSP has problems. Replace It

N

Follow procedure digital TV video

trouble shooting while recording

(watch & record)

N

19. Digital TV Audio Trouble Shooting while recording (Watch & Record)


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57/76


Check RF Cable

Y

Check CVBS Signal

TU1100 #7 Pin

N

Y

Check CVBS Signal

CXA2069(IC1102) #30 Pin

N Replace one of

C1159/R1161/C1149

& Recheck

Y

Check CVBS Signal

CXA2069(IC1102) #53 Pin

N Replace CXA2069(IC1102)

& Recheck

Y

Check CVBS Signal

C137

N Replace one of

R1190/Q1110/R195/C137

& Recheck

Y

Y


problems


has problems

20. Analog TV Video Trouble Shooting while recording (Watch & Record)


(5.0V, 2.5V, 3.3V, 1.2V)

N Replace one of

L1106/L1105/L1107/L1109

& Recheck


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59/76


Follow procedure analog TV video

trouble shooting while recording

NCheck video output

Y

Check SIF Signal

TU1100 #6 Pin

N

Y

N

Y

Check SIF Signal

C141

N Replace one of R113/C141

& Recheck

Y


trouble shooting



Y


problems

Replace one of

L512/L514/C550/C553/Q504/Q506

Q508/IC501 & Recheck

Check SIF Signal

IC501 #4 Pin

21. Analog TV Audio Trouble Shooting while recording (Watch & Record)


(5.0V, 2.5V, 3.3V, 1.2V)

N Replace one of

L1106/L1105/L1107/L1109

& Recheck


60/76

LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.

Only for training and service purposes- 59 -

300

200

801

200T

120 1

21

122

500

330

510

805

804

803

802

806

550

900

530

540

400

521

A2

A10

LV1

EXPLODED VIEW

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These

parts are identified by in the Schematic Diagram and EXPLODED VIEW.

It is essential that these special safety parts should be replaced with the same components as

recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.

Do not modify the original design without permission of manufacturer.

IMPORTANT SAFETY NOTICE


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THE

SYMBOLMARKOFTHISSCHE

METICDIAGRAMINCORPORATES

SPECIALFEATURESIMPORTANTFORPROTECTIONFROMX-RADIATION.

FILREANDELECTRICALSHOCKHAZ

ARDS,WHENSERVICING

IFIS

ESSENTIALTHATONLYMANUFATUR

ESSPECFIEDPARTSBEUSEDFOR

THECRITICALCOMPONENTSINTHE

SYMBOLMARKOFTHESCHEMETIC.

LVDS

_TX

_OUT

_TA3+

10:D

1

LVDS

_TX

_OUT

_TB3-

10:D

2

BCMPWM

_VBR

_B

P901

GIL-G-03-S3T2

ENG

1 2 3

LVDS

_TX

_OUT

_TB3+

10:D

2

LVDS

_TX

_OUT

_TAC+

10:D

2

LVDS

_TX

_OUT

_TAC-

10:D

2

+12

.0V

LVDS

_TX

_OUT

_TB1+

10:D

2

LVDS

_TX

_OUT

_TB4-

10:D

2

R905

0

OPT

LVDS

_TX

_OUT

_TBC-

10:D

2

LVDS

_TX

_OUT

_TA1+

10:D

1

R9330

OPT

LVDS

_TX

_OUT

_TB4+

10:D

2

L903CB3216PA501E

OPC

_OUT

R941

0

OPC

_EN

LVDS

_TX

_OUT

_TA2-

10:D

1

GND

LVDS

_TX

_OUT

_TBC+

10:D

2

LVDS

_TX

_OUT

_TA1-

10:D

1

OPC

_EN

LVDS

_TX

_OUT

_TB2+

10:D

2

C912

1000p

F50V

GND

LVDS

_TX

_OUT

_TA0-

10:D

1

C913

0.1

uF

50V

C914

22u

F

16V

GND

R9380

R934

0

OPC

_EN

R942

0

R940

0

OPC

_EN

LVDS

_TX

_OUT

_TA4-

10:D

2

LVDS

_TX

_OUT

_TA3-

10:D

1

GND

LVDS

_TX

_OUT

_TA2+

10:D

1

LVDS

_TX

_OUT

_TB0+

10:D

2

LVDS

_TX

_OUT

_TB0-

10:D

2

LVDS

_TX

_OUT

_TA4+

10:D

1

+12.0V

_LCD

LVDS

_TX

_OUT

_TB1-

10:D

2

R9370

OPT

LVDS

_TX

_OUT

_TA0+

10:D

1

D3

.3V

LVDS

_TX

_OUT

_TB2-

10:D

2

B

IT_

SEL

LVDS

_SEL

R935499

R9043.3K

OPT

R9363.3K

OPTR931

0 OPT

P903

TF05-5

1S

1 2 3 4 5 6 7 8 910

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

41

42

43

44

45

46

47

48

49

50

51

52

+12

.0V

_LCD

+12

.0V

_LCD

LVDS

_SEL

BIT

_SEL

V4Pull-Uplis

t

OPC_

EN:500Ohm

LVDS_

SEL/BIT_

SE:3

.3k

LVDS_

SEL

R938:VESA

R936:JEIDA

Copyright LG Electronics. Inc. All right reserved.Only for training and service purposes

LGE Internal Use Only


68/76


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THE

SYMBOLMARKOFTHISSCHEMETICDIAGRAMINCORPORATES

SPECIALFEATURESIMPORTANTFORPROTECTIONFROM

X-RADIATION.

FILREANDELECTRICALSHOCKHAZARDS,WHENSERVIC

ING

IFIS

ESSENTIALTHATONLYMANUFATURESSPECFIED

PARTS

BEUSEDFOR

THECRITICALCOMPONENTSIN

THE

SYMBOLMARKOF

THESCHEMETIC.

R424

220

R426

4.7

K

C424

0.1uF

GND

IC404

AZ1117H-

3.3

2

OUTPUT

3

INPUT

1

ADJ/GND

R429

22

R436 3

3K

R435

4.7K

GND

+5.0

V_

ST

C430

0.1uF

R418

4.7

K

R4501K

GND

C405

22uF

UCOM

_RX

14:R8

R440

100

R433

4.7K

R4005

1K

R460

4.7K

LED_POWER_ON

R4006

4.7

K

C431

0.1uF

C426

0.1uF

+3.3

V_

ST

R421

22

R404100

R417

100

R415

100

R437

22

+3.3

V_

ST

GND

/W_

PROTECT

1:I7

R425

4.7

K

R430

22

R449

4.7K

OPT

C425

0.1uF

R42347K

IC406

M24C16-WMN6T

3

3

2

2

4

4

1

1

5

5

6

6

7

7

8

8

GND

+3.3

V_

ST

R431

4.7

K

R456

33K

R428 4.7K

C427

22pF

R439100

RL

_ON

4:D7;14:X19

C404

10uF

Q400

2SC3052

E

B

C

OPC_EN

7:E2

KEY1

14:AA25

IC405

KIA7029AF

2G

3

O

1

I

R438

22

R4551K

C423

0.1uF

R416

1K

X400

24MHz

LED_WARM_STBY

SDA3_3.3V9:I4

+3.3

V_

ST

Q401

RT1N141C-T112-1

E

B

C

ERROR_OUT4:C5

SCL3_3.3V

9:I4

R40322

MUTE1

3:D4

R414

0

OPT

R407

4.7

K

R400100

D3.3

V

HDMI_CEC

2:AD27

R42710K

R402

100

R459

22

R401

100

R452 4

.7K

R451

4.7K

R442

4.7K

C428

22pF

GND

LVDS

_PANEL

_CTRL

4:G1

R453

68K

R4541K

KEY2

14:AA25

C429

0.1uF

MICOM

_RESET

3:A6

GND

R413

0

C422

0.1uF

IR

1:C1;14:U23

R434

15K

+5.0

V_

ST

GND

R448

4.7

K

GND

GND

DDC

_SCL

1:J7

+3.3

V_

ST

+3.3

V_

ST

+5.0

V

GND

DDC

_SDA

1:J7

+3.3

V_

ST

R420

22

IC

407

MT

V416GMF

1

HSYNC/P1.5

2

VSYNC/P1.6

3

P1.7

/SOGI

4

RST

5

HSCL1/P3.0

/RXD

6

P4.3

/AD3

7

HSDA1/P3.1

/TXD

8

P3.2

/INT0

9

P3.3

/INT1

10

ISDA/P3.4

/T0

11

ISCL/P7.5

12 HSDA2/P7.4

13 HSCL2/P7.3

14 X2

15 X1

16 VSS

17 P4.0/AD0

18 P6.0/CLKO1

19 P6.1

20 P6.2

21 P6.3

22 P6.4

23

P6.5

24

P6.6

25

P6.7

26

P7.2

/HCLAMP

27

P7.1

/VBLANK

28

P4.1

/AD1

29

P7.0

/HBLANK

30

P5.7

/CLKO2

31

P5.6

32

P5.5

33

P5.4

34P5.335P5.236P5.1

37P5.0

38VDD

39P4.2/AD2

40P1.0/ET241P1.1/DA0

42P1.2/DA1

43P1.3/DA2

44P1.4/DA3

GND

INV

_ON/OFF

4:C6

GND

EYEQ_SDA_3.3V

R462100

EYEQ_SCL_3.3V

R461100

+3.3

V_

ST

R432

220

UCOM

_TX

14:X6

+12.0

V

Q460

2SC3052

OPT

E

B

C

R469

OPT

R470

OPT

R472

10K

Q461

2SC3052

OPT

E

B

C

R480

15K

R474

OPT

+20.0

V

+3.3

V_

ST

R473

OPT

R467

OPT

R475

30K

1/10W

1%

R468

OPT

POWER

_DET

R476

5.1

K

1/10W

5%

R477

OPT

R471

OPT

+5.0

V

POWER

_DET

9:A7;B3

R481

7.5

K

R4009

0OPT

R4010

0

IC460

NCP803SN293

1GND3

VCC

2

RESET

R463

2K

R464

2K

C415

0.1uF

C417

0.1uF

C418

0.1uF

R441100

R443

33K

+5.0

V_

ST

PDP:

LCD:

AI_ON/OFF

POD

3.3V_

VDDP_

ST,MICOM

POWERDETECT




72/76

THE


SPEC

IALFEATURESIMPORTANTFOR

PROTECTIONFROMX-RADIATION.

FILRE

AND

ELECTRICALSHOCKHAZARDS,WHEN

SERVICING

IFIS

ESSENTIALTHATONLYMANUFATURESSPECFIEDPARTSBEUSEDFOR

THEC

RITICALCOMPONENTSINTHE

SYMBOLMARKOFTHESCHEMETIC.

C2003

0.1uF

C24

7

0.1uF

C286

33uF

C249

4.7uF

D3.3

V

A3.3

V

C283

1000pF

C278

4.7uF

C297

4.7uF

C245

4.7uF

C2006

0.0

1uF

C287

33uF

C270

0.1uF

C2005

0.0

1uF

D1.8

V

D1.8

V

C281

1000pF

C256

0.1uF

C265

0.1uF

D1.2

V

C285

0.0

1uF

C280

4.7uF

C243

0.1uF C

248

1

000pF

C263

4.7uF

C289

0.1uF

C272

0.1uF

C275

0.1uF

D3.3

V

D1.2

V

C2004

33uF

C261

0.1uF

C294

0.1uF

D3.3

V

C267

0.0

1uF

C284

0.0

1uF

D1.8

V

C282

1000pF

C216

0.1uF

C276

0.1uF

C252

0.1uF

C257

0.0

1uF

D1.2

V

C255

0.1uF

C264

0.1uF

C292

0.1uF

C259

0.1uF

C246

0.1uF

C290

0.1uF

C244

0.1uF

C251

0.1uF

C254

0.1uF

C266

0.1uF

C253

0.1uF

C262

0.1uF

C258

0.1uF

C250

0.1uF

C288

0.1uF

IC100

BCM3556

DVSS

_1

AD5

DVSS

_2

AD6

DVSS

_3

J7

DVSS

_4

K7

DVSS

_5

L7

DVSS

_6

M7

DVSS

_7

AB7

DVSS

_8

AC7

DVSS

_9

G8

DVSS

_10

D9

DVSS

_11

AA9

DVSS

_12

G10

DVSS

_13

A11

DVSS

_14

L11

DVSS

_15

M11

DVSS

_16

N11

DVSS

_17

P11

DVSS

_18

R11

DVSS

_19

T11

DVSS

_20

U11

DVSS

_21

V11

DVSS

_22

D12

DVSS

_23

G12

DVSS

_24

L12

DVSS

_25

M12

DVSS

_26

N12

DVSS

_27

P12

DVSS

_28

R12

DVSS

_29

T12

DVSS

_30

U12

DVSS

_31

V12

DVSS

_32

L13

DVSS

_33

M13

DVSS

_34

N13

DVSS

_35

P13

DVSS

_36

R13

DVSS

_37

T13

DVSS

_38

U13

DVSS

_39

V13

DVSS

_40

G14

DVSS

_41

L14

DVSS

_42

M14

DVSS

_43

N14

DVSS

_44

P14

DVSS

_45

R14

DVSS

_46

T14

DVSS

_47

U14

DVSS

_48

V14

DVSS

_49

L15

DVSS

_50

M15

DVSS

_51

N15

DVSS

_52

P15

DVSS

_53

R15

DVSS

_54

T15

DVSS

_55

U15

DVSS

_56

V15

DVSS

_57

A16

DVSS

_58

G16

DVSS

_59

L16

DVSS

_60

M16

DVSS

_61

N16

DVSS

_62

P16

DVSS

_63

R16

DVSS

_64

T16

DVSS

_65

U16

DVSS

_66

V16

DVSS

_67

AA16

DVSS

_68

D17

DVSS

_69

L17

DVSS

_70

M17

DVSS

_71

N17

DVSS

_72

P17

DVSS

_73

R17

DVSS

_74

T17

DVSS

_75

U17

DVSS

_76

V17

DVSS

_77

AA17

DVSS

_78

AC19

DVSS

_79

G18

DVSS

_80

L18

DVSS

_81

M18

DVSS

_82

N18

DVSS

_83

P18

DVSS

_84

R18

DVSS

_85

T18

DVSS

_86

U18

DVSS

_87

V18

DVSS

_88

D20

DVSS

_89

G20

DVSS

_90

H20

DVSS

_91

A21

DVSS

_92

E21

DVSS

_93

F21

DVSS

_94

G21

DVSS

_95

E22

DVSS

_96

F22

DVSS

_97

G22

DVSS

_98

H22

DVSS

_99

J22

DVSS

_100

K22

DVSS

_101

L22

DVSS

_102

M22

DVSS

_103

N22

DVSS

_104

P22

DVSS

_105

R22

DVSS

_106

T22

DVSS

_107

U22

DVSS

_108

V22

DVSS

_109

W22

DVSS

_110

Y22

DVSS

_111

AA22

DVSS

_112

W23

DVSS

_113

AB23

DVSS

_114

F28

DVSS

_115

M28

DVSS

_116

T28

DVSS

_117

AC28

IC100

BCM

3556

VDDC

_1

H8

VDDC

_2

J8

VDDC

_3

K8

VDDC

_4

L8

VDDC

_5

M8

VDDC

_6

N8

VDDC

_7

P8

VDDC

_8

R8

VDDC

_9

AA8

VDDC

_10

H9

VDDC

_11

H10

VDDC

_12

H11

VDDC

_13

H12

VDDC

_14

H13

VDDC

_15

H14

VDDC

_16

H15

VDDC

_17

H16

VDDC

_18

H17

VDDC

_19

H18

VDDC

_20

H19

VDDC

_21

H21

VDDC

_22

J21

VDDC

_23

K21

VDDC

_24

L21

VDDC

_25

M21

VDDC

_26

N21

VDDC

_27

P21

VDDC

_28

R21

VDDC

_29

T21

VDDC

_30

U21

VDDC

_31

V21

VDDC

_32

W21

VDDC

_33

Y21

AGC

_VDDO

AH27

VDDO

_1

AA12

VDDO

_2

AA13

VDDO

_3

AA18

VDDO

_4

AA19

VDDO

_5

E28

VDDO

_6

L28

VDDO

_7

U28

VDDO

_8

AB28

DDRV

_1

A9

DDRV

_2

G9

DDRV

_3

G11

DDRV

_4

G13

DDRV

_5

A14

DDRV

_6

G15

DDRV

_7

G17

DDRV

_8

A19

DDRV

_9

G19




73/76


74/76


75/76

THE


SPECIALFEATURESIMPORTANTFORPROTECTIONFR

OMX-RADIATION.

FILREAND

ELECTRICALSHOCKHAZARDS,WHEN

SERVICING

IFIS

ESSENTIALTHATONLYMANUFATURESSPECFIEDPAR

TSBEUSEDFOR

THECRITICALCOMPONENTSINTHE

SYMBOLMARK

OFTHESCHEMETIC.

MPEG_TS[6]

MPEG_TS[7]

MPEG

_TS[1]

MPEG

_TS[3]

MPEG

_TS[5]

MPEG

_TS[0-7]

MPEG_TS[4]

MPEG

_TS[2]

MPEG

_TS[0]

SAA

_ADDR[3]

SAA

_DATA[2]

SAA

_DATA[9]

SAA

_ADDR[8]

SAA

_ADDR[0-12]

SAA

_ADDR[12]

SAA_ADDR[0-12]SAA

_DATA[6]

SAA

_DATA[10]

SAA

_DATA[12]

SAA

_ADDR[2]

SAA

_ADDR[9]

SAA

_DATA[8]

SAA

_DATA[13]

SAA

_DATA[1]

SAA

_ADDR[10]

SAA

_DATA[7]

SAA

_DATA[0-15]

SAA

_ADDR[11]

SAA

_DATA[15]

SAA

_DATA[4]

SAA

_DATA[0]

SAA

_ADDR[7]

SAA

_DATA[3]

SAA

_ADDR[0]

SAA

_DATA[11]

SAA

_DATA[14]

SAA

_DATA[5]

SAA

_ADDR[5]

SAA

_ADDR[6]

SAA

_ADDR[4]

SAA

_ADDR[1]

SAA

_M

_BA1

16:AL5

CPLD

_TDO

H6

GND

R1318

33

SAA

_VREF

16:G16

D3.3V

SAA

_M

_LDM

16:AL4

R132010K

SAA

_M

_BA0

16:AL5

R1310

33

R1308 4.7K

SAA7163

_MISO

16:G13

C1306

0.1uF

D3.3V

D2.6

V

MPEG

_TS[0-7]

16

:AK17

SAA7163

_SCK

16:G13

SAA

_M

_UDQS

16:AL3

SAA

_M

_CSb

16:AL4

BCM_SPI_MOSI 10:B1;A7

GND

SAA7163

_MOSI

16:G13

R1314

4.7

KOPT

R13042.7K

GND

R13020

C1303

0.1uF

R130522MPEG_SDATA9:H7R130622

C1300

0.0

47uF

R1309

4.7

K

SAA

_M

_CLKE

16:AL6

SAA

_DATA[0-15]

16:E22

R1315

10K

MPEG_CLK 16:AK16

SF

_HOLDb

9:H6

R1312

4.7K

JP1301

R1311

33

JP1304

BCM

_SPI_MISO

9:H5;C6

D3.3V

SAA

_M

_WEb

16:AL4

BCM

_SPI_MISO

9:H5;A6

R130722

R1300

1K1%

BCM

_SPI_C

Sb

9:H5;A7

SAA7163

_CSb

16:G13

BCM

_SPI_SCK

10:B1;A7

CPLD

_TDI

H6

GND

SAA

_M

_UDM

16:AL5

CPLD

_TDO

I3

P1300

YFDW254-10S

ENG

9

4 8

3 7

2 6

1

10

5

SAA

_M

_CLKN

16:AL5

SAA

_M

_CLKP

16:AL5

R13211K

OPT

MPEG_SYNC9:H7

D3.3

V

BCM

_SPI_CSb

9:H5;C6

BCM

_SPI_SCK

10:B1;E7

C1305 0.1uFJP1302

C1307

0.1uF

R1301

1K1%

SAA

_ADDR[0-12]

16:E25

JP1303

BCM

_SPI_MOSI

10:B1;E7

SAA

_M

_CASb

16:AL4

SAA

_M

_RASb

16:AL4

R131610K

CPLD

_TDI

G3

MPEG

_SOP

16:AK15

C1302

0.1uF

GND

C1301

2.2uF

SAA

_M

_LDQS

16:AL3

C1304

0.1uF

C1308

100pF

CPLD

_TCK

H7

IC1300

HY5DU561622FTP-D43-C

26

BA0

27

BA1

28

A10/AP

29

A0

30

A1

31

A2

32

A3

33

VDD

_3

34

VSS

_1

35

A4

36

A5

37

A6

38

A7

39

A8

40

A9

41

A11

42

A12

43

NC

_5

44

CKE

45

CK

46

/CK

47

UDM

48

VSS

_2

49

VREF

50

NC

_6

17

NC

_2

3

VDDQ

_1

6

VSSQ

_1

16

LDQS

15

VDDQ

_3

14

NC

_1

13

DQ7

12

VSSQ

_2

11

DQ6

10

DQ5

9

VDDQ

_2

8

DQ4

7

DQ3

4

DQ1

5

DQ2

25

NC

_4

24

/CS

23

/RAS

2

DQ0

22

/CAS

21

/WE

1

VDD

_1

20

LDM

19

NC

_3

18

VDD

_2

51

UDQS

52

VSSQ

_3

53

NC

_7

54

DQ8

55

VDDQ

_4

56

DQ9

57

DQ10

58

VSSQ

_4

59

DQ11

60

DQ12

61

VDDQ

_5

62

DQ13

63

DQ14

64

VSSQ

_5

65

DQ15

66

VSS

_3

CPLD

_TMS

G3

GND

MPEG_SCLK9:H7

CPLD

_TCK

I3

JP1300

C1309

0.1uF

R131710K

CPLD

_TMS

H6

R1313 33

MPEG_VAL 16:AK17

SAA7163_54M_CLK16:G10

R13192.7K

R1303

33

D3.3

V

IC1302

EPM3032ATC44-10N

1

TDI

2

I/O

_1

3

I/O

_2

4

GNDIO

_1

5

I/O

_3

6

I/O

_4

7

TMS

8

I/O

_5

9

VCCIO

_1

10

I/O

_6

11

GNDIO

_2

12 I/O_7

13 I/O_8

14 I/O_9

15 I/O_10

16 GNDINT_1

17 VCCINT_1

18 I/O_11

19 I/O_12

20 I/O_13

21 I/O_14

22 I/O_15

23

I/O

_16

24

GNDIO

_3

25

I/O

_17

26

TCK

27

I/O

_18

28

I/O

_19

29

VCCIO

_2

30

GNDIO

_4

31

I/O

_20

32

TDO

33

I/O

_21

34I/O_2235I/O_2336GNDINT_2

37I/GCLK1

38I/OE1

39I/GCLRN

40I/OE2/GCLK2

41VCCINT_2

42I/O_24

43I/O_25

44I/O_26

C1310

0.1uF

IC1303

W25X20AVSNIG

3

WP

2

DO

4

GND

1

CS

5

DIO

6

CLK

7

HOLD

8

VCC

GND

D3.3

V

CPLD

ProgramI

/F

MPGE_VALID




76/76

Documents

Lg 42lh40ed[-Sa] 42lh45ed[-Sb] Chassis Lj92j