Lg La73e Chassis 32lc7d C-ub Lcd Tv Sm

8/11/2019 Lg La73e Chassis 32lc7d C-ub Lcd Tv Sm

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LCD TV

SERVICE MANUAL

CAUTIONBEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : LA73E

MODEL : 32LC7D(C) 32LC7D(C)-UB

website:http://biz.LGservice.com


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CONTENTS

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

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

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

ADJUSTMENT INSTRUCTION ...............................................................10

TROUBLE SHOOTING & BLOCK DIAGRAM ........................................16

EXPLODED VIEW .................................................................................. 42

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

Shock, Fire, or other Hazards.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

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 unpackaged

replacement 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. General Specification(TV)

No. Item Specification Remark1. Receiving System ATSC/64 & 256 QAM/ NTSC-M

2. Available Channel 1) VHF : 02~13

2) UHF : 14~69

3) DTV : 02-69

4) CATV : 01~135

5) CADTV : 01~135

3. Input Voltage 1) AC 100 ~ 240V 50/60Hz

4. Market NORTH AMERICA

5. Screen Size 26 inch Wide 26 inches(582.96mm) For 26LC7D-UB

32 inch Wide - 31.51inches(800.4mm) For 32LC7D-UB,32LC4D-UA

37 inch Wide 32.02 inches(940.3mm) For 37LC7D-UB42 inch Wide 42.02 inches(1067.308mm) For 42LC7D-UB,42LC4D-UA

6. Aspect Ratio 16:9

7. Tuning System FS

8. LCD Module T260XW02-V5 For 26LC7D-UE

LC320WX4-SLA1 For 32LC7D-UB,32LC4D-UA

LC370WX3-SLA1 For 37LC7D-UB

LC420WX6-SLA1 For 42LC7D-UB,42LC4D-UA

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

2) Humidity : ~ 80 %

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

2) Humidity : 0 ~ 90 %

1. Application Range.This spec sheet is applied to the 26"/32" LCD TV used LA73Echassis.

2. EspecificacinEach part is tested as below without special appointment

2.1. Temperature : 20 5C2.2. Relative Humidity : 65 10%2.3. Power Voltage : Standard input voltage

(100~240V@ 50/60Hz) Standard Voltage of each products is marked by models

2.4. Specification and performance of each parts are followedeach drawing and specification by part number inaccordance with BOM .

2.5. The receiver must be operated for about 20 minutes priorto the adjustment.

3. Test method

3.1. Performance : LGE TV test method followed.3.2. Demanded other specification

Safety : UL, CSA, IEC specification3.3. EMC : FCC, ICES, IEC specification


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5. Chroma & BrightnessCONDITION : EZ-Picture "Daylight"

No Item Min. Typ. Max. Unit Remark

1 White peak brightness 360 450 cd/m2 HDMI input, full white,

Video Black level=High

400 500 cd/m2 SLD1 module spec

2 Contrast ratio 600:1 800:1 Non dimming mode

(PC Mode)3000:1 4000:1 5000:1 Dimming mode

1. Input full black , wait 10

minute , measure black level

2. Input full white , wait 10

minute , measure white level

3 Brightness uniformity 1.3 Refer to LCD SPEC.

4 Color coordinate RED X 0.640 +/- 0.03

Y 0.343 +/- 0.03

GREEN X 0.280 +/- 0.03

Y 0.605 +/- 0.03

BLUE X 0.145 +/- 0.03

Y 0.065 +/- 0.03WHITE X 0.276 +/- 0.03

Y 0.283 +/- 0.03

5 Viewing angle 178 R/L, U/D

6 Color Temperature Standard 8,300 9,300 10,300

Cool 10,000 11,000 12,000 HDMI input,

Warm 5,500 6,500 7,500 Daylight/Cool over 85 IRE


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6. Component Video Input (Y, PB, PR)

No.Specification

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

1. 720*480 15.73 59.94 SDTV ,DVD 480I

2. 720*480 15.73 60.00 SDTV ,DVD 480I

3. 720*480 31.47 59.94 SDTV 480P

4. 720*480 31.50 60.00 SDTV 480P5. 1280*720 44.96 59.94 HDTV 720P

6. 1280*720 45.00 60.00 HDTV 720P

7. 1920*1080 33.72 59.94 HDTV 1080I

8. 1920*1080 33.75 60.00 HDTV 1080I

9. 1920*1080 27 24 HDTV 1080P

10. 1920*1080 33.75 30 HDTV 1080P

No.Specification

Remark

Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz)PC DDC

1. 640*350 31.469 70.08 25.17 DOS

2. 720*400 31.469 70.08 28.32 DOS O

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

4. 800*600 37.879 60.31 40.00 VESA(SVGA) O

5. 1024*768 48.363 60.00 65.00 VESA(XGA) O

6. 1280*768 47.776 59.87 79.50 CVT(WXGA) O

7. 1360*768 47.720 59.799 84.75 CVT(WXGA) O

8. 1366*768 47.13 59.65 72

7. RGB PC- RGB PC INPUT Mode Table

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

PC DDC

1. 640*480 31.469 59.94 25.17 VESA(VGA) O

2. 800*600 37.879 60.31 40.00 VESA(SVGA) O

3. 1024*768 48.363 60.00 65.00 VESA(XGA) O

4. 1280*768 47.776 59.87 79.50 CVT(WXGA) O

5. 1360*768 47.720 59.799 84.75 CVT(WXGA) O

6. 1366*768 47.13 59.65 72

DTV

7. 720*480 31.469 59.94 27.00 SDTV 480P

8. 720*480 31.500 60.00 27.03 SDTV 480P

9. 1280*720 44.96 59.94 74.17 HDTV 720P

10. 1280*720 45.00 60.00 74.25 HDTV 720P

11. 1920*1080 33.72 59.94 74.17 HDTV 1080I

12. 1920*1080 33.75 60.00 74.25 HDTV 1080I

13. 1920*1080 27 24.00 74.25 HDTV 1080P

14. 1920*1080 33.75 30.00 74.25 HDTV 1080P


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8. Customer Menu Setup (Shipment Condition)

No Item Condition Remark

1. Input Mode TV02CH

2. Volume Level 30

3. Mute Off

4. Aspect Ratio 16:9

5. Video EZ Picture DaylightContrast 100

Brightness 40

Color 70

Sharpness 70

Tint 0

Color-temperature Cool

XD Auto(On)

Advanced Cinema3:2 Mode(Off)

Black Level(RF,HDMI=>Low),(AV=>High)( RGB-PC,Component=>Disable)

6. Audio Audio Language Off

EZ Sound NormalBalance 0

Bass 50

Front Surround Off

TV Speaker On

7. Timer Auto clock Off

Manual Clock Off

Off Timer Off

On Timer Off

Sleep Timer Off

Auto Off Off

8. Option Aspect Ratio 16:9

Caption/Text Off

Caption Option Set By Program

Language English

Simplink On

9. Lock Lock System Off

Set password On (Default:0000)

Block channel None

Movie Rating Off

TV Rating-Children None

TV Rating-General None

Input Block Off

10. Channel Memory RF : 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 30, 51, 63

CATV : 15, 16, 17


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ADJUSTMENT INSTRUCTION

1. Application ObjectThese instructions are applied to all of the LCD TV, LA73E.

2. Notes(1) Because this is not a hot chassis, it is not necessary to use

an isolation transformer. However, the use of isolationtransformer will help protect test equipment.

(2) Adjustments must be done in the correct order.(3) The adjustments must be performed in the circumstance of

205C of temperature and 6510% of relative humidity ifthere is no specific designation.

(4) The input voltage of the receiver be must kept 110V, 60Hzwhen adjusting.

(5) The receiver must be operational for about 15 minutesprior to the adjustments.

* Perform preliminary operation after receiving 100% WhitePattern (06CH).

(Or 3. White Pattern status of Ez-Adjust)* White Pattern entry methodA) Enter into Ez-Adjust by pressing the ADJ key on the

adjustment R/C.B) 100% FULL WHITE PATTERN appears if pressing the

OK (A) key after selecting the 3.WHITE PATTERN withthe CH + / - KEY.

* It is possible to heat run the set without a separatesignal generator in this mode.

Caution : Care must be taken as afterimagephenomena may occur about the black level part ofscreen If leaving pause image turned on for morethan 20 minutes (especially inner digital pattern (13

CH), Cross Hatch Pattern (09CH) with significantblack/white contrast).

3. MICOM Download(Option)

3-1. Required Test Equipment(1) JIG-LEVER TYPE for adjusting: 1EA(2) PC & MONITOR: 2EA(3) BOARD for INTERFACE: IIC & ISP BOARD: 2EA

(4) 15P D-SUB CABLE: 2EA(5) Using the 12/15 line of D-SUB 15P

12-SDA/15-SCL

3-2. JIG Connection

3-3. Establishment Program(1) Establish LGE Monitor Tools v1.1(2) The program work and it is opened program window as

seen below.

connection

to PCconnection

to PC


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(3) Click the first icon shown in fig.9. The window seen infig.10 should appear.

3-4. Set Method(1) MCU Select: MTV512M64(2) Option

R/W Option: Auto Write(Verity)Jig Option: MysonTransmit Speed: Medium

(3) Check: Just do it with blank micom.(4) PORT

Chose Parallel Port (normal LPT1)

Attention: You must chose EPP when select Rom BIAS atLPT

3-5. Download Method(1) Click the Load File.

(2) Locate and select the correct file from your computer.(*.hex).

(3) Click the Send.

(4) When you see (ISP COMPLETE) the download iscomplete.


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6. ADC-Set Adjustment

6-1. SynopsisADC-Set adjustment to set the black level and the Gain tooptimum.

6-2. Test EquipmentService R/C, 801GF(802V, 802F, 802R) or MSPG925FA

Pattern Generator(480i/1080i The Horizontal 100% Color Bar Pattern adjust towithin 0.70.1Vp-p)

[ADC adjustment (MSPG-925Fx series) Model No. & Pattern No.]

- Model No.: #209(480i adjustment), #223(1080i adjustment)- Pattern No.: #65(7ColorBar Pattern)

6-3. Adjustment(1) Select Component1 as the input with 100% Horizontal

Color Bar Pattern(HozTV31Bar) in 480i Mode(2) After receiving signal for at least 1 second, press the ADJ

Key on the Service R/C to enter the Ez - Adjust and selectthe 2. ADC 480i Comp1.Pressing the Enter Key to adjust automatically.

(3) When the adjustment is over, 'MST3361 ComponentSuccess is displayed. If the adjustment has errors,'MST3361 Configuration Error is displayed.

(4) Select Component1 as the input with 100% HorizontalColor Bar Pattern(HozTV31Bar) in 1080i Mode.

(5) After receiving signal for at least 1 second, press the ADJKey on the Service R/C to enter the Ez - Adjust and selectthe 3. ADC 1080i Comp1/RGB.Pressing the Enter Key to adjust automatically.

(6) When the adjustment is over, 'MST3361 ComponentSuccess is displayed. If the adjustment has errors,'MST3361 Configuration Error is displayed.

(7) After the Component MST3361 adjustment is over, convertthe RGB-DTV Mode and display Pattern.When the adjustment is over, 'MST3361 RGB_DTVSuccess is displayed.

(8) Readjust after confirming the case Pattern or adjustmentcondition where the adjustment errors.(9) After adjustment is complete, exit the adjustment mode by

pressing the ADJ KEY.

Adjustment Mode

Adjustment Pattern: 480i/1080i 60Hz HozTV30 BarPattern


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7. EDID(The Extended DisplayIdentification Data)/DDC(Display Data Channel) Download

This is the function that enables Plug and Play".

7-1. HDMI EDID Data Input(1) Required Test Equipment

1) PC, Jig for adjusting DDC. (PC serial to D-subConnection equipment)

2) S/W for writing DDC(EDID data write & read)3) D-Sub cable4) Jig for HDMI Cable connection

(2) Preparation for Adjustments & Setting of Device1) Set devices as below and turn on the PC and JIG.2) Open S/W for writing DDC (EDID data write & read).

(operated in DOS mode)

7-2. EDID DATA for LA73E

O EDID for HDMI-1 (DDC (Display Data Channel) Data)EDID Block 0 table =

EDID Block 1 table =

O EDID for HDMI-2 (DDC (Display Data Channel) Data)EDID Block 0 table =

EDID Block 1 table =

O EDID for RGB-PCEDID Block 0 table =

0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01

10 | 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23

20 | 09 48 4C 2F CE 00 31 40 45 40 61 40 01 01 01 01

30 | 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70

40 | 36 00 C4 8E 21 00 00 1E 0E 1F 00 80 51 00 1E 3050 | 40 80 37 00 C4 8E 21 00 00 1C 00 00 00 FD 00 38

60 | 4B 1F 3C 09 00 0A 20 20 20 20 20 20 00 00 00 FC

70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 98

0 | 02 03 16 F1 46 84 05 03 02 20 22 23 15 07 50 66

10 | 03 0C 00 10 00 80 01 1D 00 72 51 D0 1E 20 6E 28

20 | 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C 16 20

30 | 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 8A 20 E0

40 | 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A D0 8A

50 | 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18 00 0060 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

70 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 25

0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01

10 | 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23

20 | 09 48 4C 2F CE 00 31 40 45 40 61 40 01 01 01 01

30 | 01 01 01 01 01 01 01 1D 00 72 51 D0 1E 20 6E 28

40 | 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C 16 20

50 | 58 2C 25 00 C4 8E 21 00 00 9E 00 00 00 FC 00 4C

60 | 47 20 54 56 0A 20 20 20 20 20 20 20 00 00 00 FD

70 | 00 38 4B 1F 3C 09 00 0A 20 20 20 20 20 20 01 66

0 | 02 03 16 F1 46 84 05 03 02 20 22 23 15 07 50 66

10 | 03 0C 00 20 00 80 8C 0A D0 8A 20 E0 2D 10 10 3E

20 | 96 00 C4 8E 21 00 00 18 8C 0A D0 8A 20 E0 2D 10

30 | 10 3E 96 00 13 8E 21 00 00 18 00 00 00 00 00 00

40 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

50 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

60 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

70 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 B3

0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01

10 | 00 11 01 03 68 73 41 96 0A CF 30 A3 57 4C B0 23

20 | 09 50 4E A1 08 00 01 01 01 01 01 01 01 01 01 01

30 | 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70

40 | 36 00 C4 8E 21 00 00 1E 0E 1F 00 80 51 00 1E 30

50 | 40 80 37 00 C4 8E 21 00 00 1C 00 00 00 FD 00 38

60 | 4B 1F 3C 09 00 0A 20 20 20 20 20 20 00 00 00 FC

70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 00 D0

LCD TV SET

(or Digital Board)


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8. Adjustment of White Balance

8-1. The Purpose and Principal of ColorTemperature Adjustment

(1) Purpose: to reduce the difference in color temperatureamong modules

(2) Principal: A module is in full dynamic range when RGB

Gain on OSD is 192. To adjust the white balance withoutcausing full dynamic range and full data, fix one of RGBGains at 192 and control the other two by reducing themfrom 192.

8-2. Required Equipment(1) Color Analyzer : CA-110 or CA-210

(2) Automatic adjustor (with automatic adjustment necessityand the RS-232C communication being possible)

8-3. Connection Diagram of Equipmentfor Measuring (Automatic Adjustment)

Use the internal pattern to adjust White Balance. The patternis automatically given when the automatic adjustment deviceis connected or when a user presses ADJ on the remotecontroller to start Ez Adjust and then selects 6.White-Balance.

* Requirements for Automatic Adjustment

(1) The illuminance of surroundings10 lux or less; preventing light in surroundings as much aspossible

(2) The location of the Probe1) For PDP: place the color analyzer (CA-110, CA-210)

close to the surface of a module and start theadjustment.

2) For LCD: place the color analyzer (CA-110, CA-210)close to the surface of a module within 10 cm and keepthe probe of the color analyzer at 80 to 100 angle fromthe surface of a module.

(3) Aging time1) Once Aging is started, keep the power on without power

supply interruption for at least 15 minutes for heat run.2) For PDP, use the internal pattern to adjust White

Pattern.3) For LCD, use NO SIGNAL or Full White Pattern to

ensure the backlight is turned on.

8-4. Adjustment of White Balance(Automatic Adjustment)

(1) Turn on the POWER ON() of the remote controller to setthe adjustment and then start the automatic adjustment orset the Baud Rate to 115200.) of the remote controller to

(2) Start the adjustment from wb 00 00 and complete it atwb 00 ff. (Adjust the offset if necessary)

wb 00 00 the automatic adjustment of White Balance isstarted.wb 00 10 adjusting gain (internal pattern appears) isstarted.ja 00 ff adjusting datajb 00 c0

...wb 00 1f adjusting gain is completed.Adjust the offset (from wb 00 20 to wb 00 2f) if necessary.wb 00 ff the automatic adjustment of White Balance(internal pattern disappears) is completed.

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 te P a tt er n

RS-232C

Connection Diagram of Automatic Adjustment


15/45

- 15 -

* RS-232C Command (Automatic Adjustment)

LA73E Chassis Model All]

8-5. Adjustment of White Balance(Manual Adjustment)

Required Equipment : CA-210

(1) Enter Ez - Adjust by pressing ADJ KEY on the ServiceRemote Control.

(2) Select "9. TEST PATTERN" using CH +/- Key and HEATRUN at least 30 minutes by pressing the ENTER Key.

(3) Zero Calibrate of the Color Analyzer, then attach sensor toLCD module surface when you adjust.

(4) Select 6. White-Balance of Ez - Adjust by pressing theADJ KEY on the Service R/C. Then enter adjustment modeby pressing the Right KEY (G) .(The internal pattern of full white appears by pressing G)

(5) The adjustment is conducted in three levels of colortemperature; COOL, MEDIUM, and WARM.

* Color temperature: Cool, Medium, Warm

(1) When R Gain is fixed at 192,Control G Gain and B Gain by reducing them from 192.

(2) When B Gain is fixed at 192,Control R Gain and G Gain by reducing them from 192.

(3) When G Gain is fixed to 192,Control R Gain and B Gain by reducing them from 192.

Fix one of three Gains (R Gain, G Gain, and B Gain) at 192and control the other two by reducing values from 192 to

prevent it from increasing.

(When RGB Gains are all 192, the module is in full dynamicrange.)

9. USB S/W Download (Option)

9-1. OverviewUSB Download enables quick response to S/W upgrading andhelps to configure the panel to the latest updates.

9-2. How to Download(1) Before starting USB download, ensure that the power is

turned off and the display is turned on.(2) Once the USB memory stick containing the upgraded fileis connected to the USB port on the main board, thefollowing picture appears on the screen.

(3) Check the current version at [Current TV Software VersionInformation] and the target version at [New Found TVSoftware Version Information]. Press Enter on the remotecontroller to confirm the upgrade.

(4) The following picture shows the downloading in progress.Once the download is completed, the power isautomatically turned on and off. (Otherwise, please turn thepower on and off)

(5) Once the download is completed, remove the USBmemory stick from the USB port. Press IN-START on theremote controller to check the upgraded S/W version at thetop of the screen while the display is turned on.

R Gain

G Gain

B Gain

R Cut

G Cut

B Cut

jg

jh

ji

Cool

ja

jb

jc

Mid

RS-232C COMMAND

[CMD ID DATA]

CENTER

(DEFAULT)(Decimal)

jd

je

jf

00

00

00

192

192

192

Warm

Min

Max

(Deci

mal)

64

64

64

Cool

64

64

64

Mid

64

64

64

Warm

Do not plug off.

Press EXIT to cancel the upgrade.

The software upgrade is now in progress.

Until the whole process if completed, please.

- Do not remove the memory card from the slot.

- Do not plug off.

Reading the file---Done

Upgrading---Done

The TV will restart automatically in 0 seconds.


16/45

- 16 -

NoRGB DTV

YesAdaptiv e Picture Mode

Audio Outp ut10W*2

Freeze NoOthers

Phase, Siz eAdjust

DOS70,VGA60,S

VGA60,XGA60,WXGA60,SXGA60

RGB In (15 Pin)

YesAuto Nav igation (Link)

YesBBE

YesSRS Trusurround TX

Yes(2D)Enhanced Noise Reduction

USE scalie r On/Off OSD MenuYesXD EngineUse Br ief Inf oO(PSIP)Progr am Guide Type

1 RF1 RF(Air /Cable)RF

RemarkBroadcomFeature

TROUBLESHOOTING & BLOCK DIAGRAM

- Prouct Brief spec


17/45

-Bloc

kdiagram

for

CIDTV

- 17 -

Side

AV

V,L

R

Rear

AV

V,

LR

Rear

S

YC

,LR

Side

S

YC

,LR

MNT

_V

_Ou

t

IN1

OUT1

IN4

IN1

IN4

IN5

OUT3

Comp

_1YCbCr

Comp

_2YCbCr

IN3

IN4

CVBS

CVBS

ATSC/NT

SCTuner

Ca

ble

ANT

.

64-B

it

I/F

BCM3560

12

LVDS

Trans

CXA2069(AVS

/W)

VDEC

_CVBS/S

_Y

VSB/QAM/NTSC/SI

F

SPD

IFOu

t

I2S

Ou

tpu

t

SPDIF

_OUT

FlashMemory

16MB

HDMI/DVI

RS-2

32C

X-ta

l

54MHz

R

ese

tIC

Au

dio

PWML/R

Su

bMic

om

(MTV416)

EEP

ROM

HDMI&Co

mponen

t

RGB-P

C

Au

dio

Tuner

Comp

_1

LR

Comp

_2

LR

RGB(Phone

)

LR

AUDIOADC

Au

dioR/L

I2S

I2SAu

dioInpu

t

MST3361

R/G/B

H/VSync

DVIInpu

t

Digita

lOu

tpu

t.

SDRAM

256Mbit

DDS

Data

[24]

Hsync/V

sync

/DE/Clk

2X

1

S/W

2X

1

S/W

HDCP

IIC

TMD

S

DDS

S

PDIF

Y,C

IFP/Nfor

DTV

SIFfor

NTSC

SIFfor

NTSC

US

Bforupgra

de

S/W

LR

MNT_Ou

t

AUDIODAC

IIS

TMD

S


18/45

- 18 -

-Powr

flow

diagram

+12

.0V

+12

.0V

KIA78R09

K

IA78R09

FAN1

,2,3

FAN1

,2,3

FAN4

FAN4

SI492

5DY

SI492

5DY

MP1593

MP1593

CMO

,AUO

CMO

,AUO

+9

.0V

+9

.0V

MC3307

MC3307

CXA2069

CXA2069

ST

_5V

ST

_5V

BA033FP

BA033FP

MTV416GMF

MTV416GMF

3.3

VST

_MICOM

A3

.3V

_BCM

A3

.3V

_BCM

BCM3560

BCM3560

P_

+19V

P_

+19V

TPA3100

TPA3100

+3

.3V

+3

.3V

SC1566-2.5

S

C1566-2.5

BCM3560

BCM3560

HY

DU561622

HY

DU561622

SC1566-2.5

SC1566-2.5

D2

.6V

_BCM

A2

.6V

_BCM B

CM3560

BCM3560

SC1566-2.5

SC1566-2.5+

2.5

V_

MST

MST3361

MST3

361

BCM3560

BCM3560

S29GL128M

S29GL128M

THC63LVD

THC63

LVD

74LVC14A

74LVC14A

MST3361

MST33613

.3V

_MST

DDC

DDC

A1

.2V

_BCM

,D1

.2V

_BCM

BCM3560

BCM3560

+6

.0V

+6

.0V

PQ05DZ1U

PQ05DZ1U

CS4344

CS4344

+5

.0V

MM1732

MM1732

CS533

1A

CS5331A

FMS6407

FMS6407

FMS6400

FMS6400

TPS2042

TPS2042

7

4F08D

74F08D

M62320FP

M62320FP

TUNER

TUNER

FSA1156

FSA1156

+5V

_TU

LM75CIMX

LM75CIMX

AZ1117H-3.3

AZ1117H-3.3

BCM3560

BCM3560

D3

.3V

_BCM

KIA78R09

KIA7

8R09

5V

_PANEL

AT24C512W

AT24C512W

AT24C02N

A

T24C02N


19/45

- 19 -

-12CCon

tro

lbloc

kdiagram

BCM3560

AV

S/W(CXA2069)

Ma

inEEPROM

4.7

K5

.0V

I2C

_Channe

l0

I2C

_Channe

l1

ATSC/NTSCTuner

I2C

_Channe

l2

I2C

_Channe

l3

Su

b-M

icom

I2C0

_5V

I2C1

_5V

I2C1

_3

.3

V

I2C2

_3

.3V

I2C3

_3

.3V

2.7

K

2.7

K3

.3V

M62320

4.7

K5

.0V

P

DPMo

du

le

I2CAddress

0x

90

0x

C2

0x

74

0x

A6

0x

1C

0x

50

0x

9C

MST3361

3.3

V


20/45

- 20 -

-Videos

igna

lpa

thfor

Compos

ite

/S-V

ideo

/IF

MNT_V

_Ou

t

SD

_CVBS

CXA2069

OUT3

Side

AV

V,LR

Rear

AV

V,LR

Rear

S

YC

,L

R

Side

S

YC,L

R

IN1

IN4

IN1

IN4

IN3

IN4

Comp

_1

LR

Comp

_2

LR

RGB(Phone

)

LR

BCM3

550

SD

_Y

SD

_C

ANT/Ca

ble

TVIN

CVBSfrom

TUNER

FMS6400

Y/CVBS

C

OUT1/Y

OUT1/C

M_

CVBS/Y

C

M_

CVBS

C

Y

LPFfor

CVBS

TUNER

IF_

P

IF_

N

IF_

Pfrom

TUNERfor

DTV

IF_

Nfrom

TUNERfor

DTV


21/45

- 21 -

-Videos

igna

lpa

thfor

Compos

ite

Comp1

_Y

8(3A)

Comp1

_Pb11(2A)

Comp1

_Pr

16(1A)

Comp2

_Y

9(3B)

Comp2

_Pb14(2B)

Comp2

_Pr

1(1B)

2

12

7

SW1SW2SW36

(Ou

t3)

Comp

_Y

5(Ou

t2)

Comp

_Pb

3(Ou

t1)

Comp

_Pr

L H

8(3A)

11(2A)

16(1A)

RGB

_G

9(3B)

RGB

_B

14(2B)

RGB

_R

1(1B)

2

12

7

SW1SW2SW3

6(Ou

t3)

Y/GtoLPF

5(Ou

t2)

Pb/BtoLPF

3(Ou

t1)

Pr/

RtoLPF

L H

IC5001

IC5002

Y/G

3(Y

IN)

Pb/B

5(P

BIN)

Pr/

R

7(P

BIN)

1(EXT

_SYNC)

18(SYNC

_IN)

16Comp

_Y

15Comp

_Pb

14Comp

_Pr

44(GIN+

)

43(SOGIN)

41(BIN+

)

46(RIN+

)IC704

IC4009

RGB

_G

HSync

7404

VSync

RGB

_B

RGB

_R

BCM

3550

GPIO

G

PIOforsyncse

lec

tion

HD-D

VI

Da

ta[24]

Hsync

/Vsync

/DE/Cloc

k

H,V

Sync

/Cloc

k

RGB

_HS

GPIOforsyncse

lec

tion

RGB

_HS

RGB

_VS

RGB

_HS

RGB

_VS

GPIO

G

PIOfor

Componen

t1

GPIO

G

PIOfor

Componen

t2

GPIOfor

Componen

t2

GPIOfor

Componen

t1

IC1

001

FMS6407

MST3361

MM1731

MM1732

DATA

_OUT

H/V/DE/CLK

LPF

_CTRL0

LPF

_CTRL1

LPF

_CTRL0

LPF

_CTRL1


22/45

- 22 -

-Videos

igna

lpa

thfor

HDMI

IC704

BCM

3550

GPIO

GPIOfor

Interrup

t

HD-D

VI

Da

ta[0:

23]

Hsync

/Vsync

/DE/Cloc

k

H,V

Sync

/Clock

GPIO

GPIOfo

rPower

de

tec

tion

1

GPIO

GPIOfo

rHo

tp

lug

de

tec

tion

1

IC1001

M

ST3361

TMDS

1RX0+

/-

TMDS

1RX1+

/-

TMDS

1RX2+

/-

TMDS

1RX3+

/-

DDCSDA1

DDCSCL1

EEPROM

For

EDID

DDCSDA1

DDCSCL1

TMDS1

INPUT

DDC1

INPUT

TMDS

2RX0+

/-

TMDS

2RX1+

/-

TMDS

2RX2+

/-

TMDS2RX3+

/-

DDCSDA2

DDCSCL2

EEPROM

For

EDID

DDCSDA2

DDCSCL2

TMDS2

INPUT

DDC2

INPUT

HDCPSDA

HDCPSCL

EEPROM

For

HDCP

NDA

NCL

INT

DATA

_OUT

H,V

Sync

/DE

/Cloc

k

HDMI1

HDMI2

GPIO

GPIOfo

rPower

de

tec

tion

2

GPIO

GPIOfo

rHo

tp

lug

de

tec

tion

2

GPIOfor

Powe

rde

tec

tion

2

GPIOfor

Hotp

lug

de

tec

tion

2

GPIOfor

Power

de

tec

tion

1

GPIOfor

Ho

tplu

gde

tec

tion

1


23/45

- 23 -

-Au

dios

igna

lpa

thfora

ll

SIFfrom

TUNER

CXA2069

Side

AV

V,LR

Rear

AV

V,L

R

Rear

S

YC,

LR

Side

S

YC,

LR

IN1

IN4

IN1

IN4

IN3

IN4

Comp

_1

LR

Comp

_2

LR

RGB(Phone

)

L

R

OUT1/R

OUT1/L

ANT/Cab

le

TUNER

AUDIOADC

(CS5331)

A

udioR

I2S

_SCK

_IN

Au

dioL

BCM3550

SIF

I2S

_LRCH

_IN

I2S

_LRCK

_IN

I2S

_SCK

_IN

I2S

_LRCH

_IN

I2S

_LRCK

_IN

SPDIF

_IN

_P

SPDIFfrom

MST3361

_R

MNT

_Ou

t

AUDIODAC

(CS4344)

I2S

_SCK

_OUT

I2S

_LRCH

_OUT

I2S

_LRCK

_OUT

I2S

_SCK

_OUT

I2S

_LRCH

_O

UT

I2S

_LRCK

_O

UT

_L

MNT

_Ou

t

Ana

log

L_

OUT

Au

dio

AMP

(TPA3100)

SPDIFOu

t

SPDIF

_OUT

_P

AUD

_LEFT

_P

AUD

_LEFT

_N

AUD

_RIGHT

_N

AUD

_RIGHT

_P

SPK

_L

_P

SPK

_L

_N

SPK

_R

_N

SPK

_R

_P

Ana

log

R_

OUT

MC3307

(OP-A

MP)

IF

_P

from

TUNER

for

DTV

IF

_N

from

TUNERfor

DTV

IF_

P

IF_

N


24/45

- 24 -

-Au

dioLinksys

tem

BCM3550

CXA2069

+5V

4.7

k(R5097)

22(R3126)

COMP1

_SW

+5V

4.7

k

22(R3125)

COMP2

_SW

AE1

AC4

0(R3072

)2.7

k

(R5128)

HDMI_POWER

_1

AD24

0(R3075

)

HDMI_POWER

_2

AC22

Y23

5

(GND)

+9V

100k

(R5027)

AV1

_SW

+9V

100k

(R5069)

AV2

_SW

6(S2-1)

13(S2-2)

0(R5088)

100(R5079)

J5005

J5004

J5007

P5001

22(R305

2)

/RGB-PC

5V

_HIGH

5V

_HIGH

9V

_HIGH

9V

_HIGH

5V

_HIGH

5V

_HIGH

0V

_HIGH

IncaseofRGB-PC,

ItrequireH/W

work.

Plug-IN(LOW),Plug-OUT(HIGH)

P700

7

P700

8

P700

4

+5V 1

0k

1k


25/45

- 25 -

-Au

dioInpu

tleve

lfor

RF/AV

700m

V

700m

V

Inpu

t

ICspec

Measuremen

t

wave

form

700m

V

700m

V

Measuremen

t

da

ta

PAL

NTSCan

dPAL

NTSCan

dPAL

Sys

tem

SCART-C

VBS

AV

RF

Inpu

ts

igna

l

*Measuremen

tda

tafor

RF/AVampli

tudea

tthepo

into

fBCM3550inpu

tp

in


26/45

- 26 -

-Video

Inpu

tleve

lfor

S-V

ide

o/Componen

t

500m

V~

1V

700m

V

800m

V

700m

V

480i@60Hz,5

76i@50Hz

NTSCan

dPAL

Componen

t

S-V

ideo

Inpu

t

ICspec

Measuremen

t

wave

form

Measuremen

t

da

ta

Sys

tem

Inpu

ts

igna

l

*Measuremen

tda

tafor

S-v

ideo

/Com

ponen

tinpu

tamp

litu

dea

tthepo

into

f

BCM3550in

pu

tp

in


27/45

- 27 -

-Ma

infea

tureo

fBCM3550


28/45

- 28 -

-Ma

infea

tureo

fBCM3550


29/45

- 29 -

-Who

lec

hipinterna

lbloc

k


30/45

- 30 -

-Brie

fdiagram

foroursys

tem

Video

Networ

k Swith

Front

Lbox

Detect

Video

Netw

orkSwith

Back

N

ULL

N

ULL

2DHDS

caler

2DH

DS

caler

MAD

MAD

CRC

Capture2

TNT/

PEP

VBP

VBP

NULL

NULL

FeedBack

Compositor

MPEG

Feeder

VideoFeede

r

ITU656

HD-DVI

VDEC0

FeedBac

k

DNR

DNR

2D

SDS

caler

VEC

Up

Scaler

UpScaler

Graphic

Graphic

VDEC1

HDMI-RX

Digital

Input


31/45

- 31 -

-ADC/IFDemo

du

lator

InbandAFE

12BitA/D

InbandAFE

12BitA/D

AGCControl

ATSCVSB

Advanced

Receiver

ATSCVSB

Advanced

Receiver

ATSC

FEC

ATSC

FEC

Inband

Output

Interface

Inband

Output

Interface

OOBQPSK

Receiver

OOBQPSK

Receiver

OOB

Output

Interface

OOB

Output

Interface

DVS-167FEC

DVS-178FEC

DVS-167FEC

DVS-178FEC

OOBAFE

6BitA/D

OOBAFE

6BitA/D

AGCControl

QAMV

SB

Advanced

Receiver

QAMV

SB

Advanced

Receiver

ITU-TJ.83

Annex

A/B/CFEC

ITU-TJ.83

Annex

A/B/CFEC

NTSCIF

Demodulator

NTSCIF

Demodulator

InputBan

d

InputBan

d

InputBan

d

InputBand

InputBan

d

InputBand

Inp

ut

Band

Input

Ban

d

MUX

MUX

InputBan

d

InputBand

BCM3560DATA

TransportModule

BCM3560DATA

TransportModule

MemoryController

MemoryController

V

ideoOutput

V

ideoOutput

A

udioOutput

A

udioOutput

HSX1Serial

HSX1Serial

MPEG-2Transport

Demuxw/DVB,DES

MPEG-2Transport

Demuxw/DVB,DES


32/45

- 32 -

-Be

fore

Videone

twork

Video

Netwo

rkSwith

Front

AFE

AFE

Front

End

Front

End

Y/C

Separation

Y/C

Separatio

n

Chroma

Demo

Chroma

Demo

Back

End

Back

End

VDEC

Block

BV

B

Inter

face

BV

B

Interface

MemoryInterface(SCB)

MemoryInterface(SCB)

SCB

BUS

SCB

BUS

Croma

Conversion

Croma

Conversion

Horizon

P

anScan

Horizon

P

anScan

Frame

Buffer

Frame

Buffer

De-Inter

De-Inter

MPEG

Feeder

B

VB

Interface

B

VB

Inte

rface

SCB

DATA

Buffer

SCB

DATA

Buffer

Pixel

Cropping

Pixel

Cropping

Color

Expansion

Color

Expansion

C

olor

Key

C

olor

K

ey

Alpha

Pre-

Multipl

Alpha

Pre-

Multipl

GraphicFeederBlock

Horizon

Scaler

Horizon

Scaler

Gamma

Correction

Color

Convertor

BVB

Interface

CLUT

CLUT

???

???

RGB

Converter

RGB

Converter

Input

Timing

Adjust

Input

Timing

Adjust

DVI-Secondary

BVB

Int

erface

B

VB

Inte

rface

???

???

RGB

Converter

RGB

Converter

Input

Timing

Adjust

Input

Timing

Adjust

DVI-Primary

BVB

Int

erface

B

VB

Inte

rface

HDMI

Receive

Decode

HDMI

Receive

Decode

HDCP

Decrypt

HDCP

Decrypt

HDMIBlock

HDMI

TMDS

Pins

HDMI

TMDS

Pins

Lbox

Detect

Lbox

Detect

TAB

2D-Scaler

TAB

2D

-Scaler

2D-Scaler

2D

-Scaler

MAD-IT

MAD-IT

NULL

NULL

Fe

edBack

FeedBack

SCB

BUS

SCB

BUS

Croma

Conversion

Croma

Conversion

Horizon

PanScan

Horizon

P

anScan

Frame

Buffer

Frame

Buffer

De-Inter

De-Inter

VideoFeeder

B

VB

Interface

B

VB

Inte

rface

ANALOG

Pins

ANALOG

Pins

HDMI

Pins

HDMI

Pins

DVI

Pins

DVI

Pins

CoefTable


33/45

- 33 -

-Sca

leran

dMAD

Video

Netwo

rkSwith

Front

Lbox

Detect

Lbox

Detect

MUX

MUX

BVB

Receiver

BVB

Receiver

Vertical

Scaler

Vertical

Sca

ler

TAB

TAB

MUX

MUX

MUX

MUX

Hoarizonal

Scaler

Hoarizonal

Sca

ler

TAB2D-Scaler

MUX

MUX

BVB

Receiver

BVB

Receiver

Vertical

Scaler

Vertical

Sca

ler

MUX

MUX

MUX

MUX

Hoarizonal

Scaler

Hoarizonal

Sca

ler

2D-Scaler

BVB

Receiver

BVB

Receiver

Pixel

Distribution

Block

Pixel

Distribution

Block

Pixel

Processing

Block

Pixel

P

rocessing

Block

SCB

Output

SCB

Output

BVB

Interface

BVB

Interface

FieldContro

lBlock

FieldControlBlock

MAD

Video

Netwo

rkSwith

Back

CRC

CRC

Capture0

Ca

pture0

Capture1

Ca

pture1

Capture2

Ca

pture2

NULL

NULL

NULL

NULL

FeedBack

FeedBa

ck

VBP

VBPCo

mpositor

Compositor

PEP

PEP

GraphicFeeder

Block


34/45

- 34 -

-PEPan

dCompos

itor

Video

Ne

two

rkSw

ith

Fron

t

CRC

CRC

Video

Ne

two

rkSw

ith

Fron

t

BVB

Rece

iver

BV

B

Rece

iver

Pac

king

&

RDMATrig

Pac

king

&

RDMATrig

Burs

t

FIFO

Burs

t

FIFO

Cap

ture

Bloc

k

DMA

DMA

SCB

BUS

SCB

BUS

NULL

NULL

Fee

dBac

k

Fe

edBac

k

VBP

(Video

Bypass

)

V

BP

(Video

Bypass

)

Grap

hicFee

der

Bloc

k

BVB

Rec

iever

BVB

Rec

iever

CAB

CAB

422TO444

Convers

ion

422TO444

Convers

ion

LAB

LAB

Co

lor

CLIP

Co

lor

CLIP

Video

Intra-Surface

(WithPEP)

Luma

Key

ing

Luma

Key

ing

BVB

Interface

BVB

Interface

Co

lor

Br

ight

Adjus

t

(Ma

trix)

Co

lor

Br

ight

Adjus

t

(Ma

trix)

C

ropp

ing

Cr

opp

ing

Bac

kGroun

d

Co

lor

Y/C

b/Cr

Reg

ister

Y/C

b/Cr

Reg

ister

BVB

Rec

iever

BVB

Rec

ieverG

rap

hics

Intra-Surface

Croppin

g

Croppin

g

BVB

Interface

BVB

Interface

Screen

Compos

iter

Screen

Compos

iter

Su

rfaces

MUX

Su

rfaces

MUX

Blen

d0

Blen

d0

Blen

d1

Blen

d1

Blen

d2

Blen

d2

Fore

Groun

d

Fore

Groun

d

Fore

Groun

d

Bac

k

Groun

d

Bac

k

Groun

d

Bac

k

Groun

d

BVB

Interface

BVB

Interface

PEP

COMPOSITOR

BVB

R

ec

iever

BVB

R

ec

iever

422TO444

Convers

ion

422TO444

Convers

ion

Video

Intra-Surface

(Withou

tPEP

)

Co

lor

Br

ight

Adjus

t

(Ma

trix)

Co

lor

Br

ight

Adjus

t

(Ma

trix)

Luma

Key

ing

Luma

Key

ing

Cropp

ing

Cropp

ing

BVB

Interface

BVB

Interface


35/45

- 35 -

-Bac

ken

d(Digita

lan

dAnalog

)

VBP

(Video

Bypass)

VBP

(Video

Bypass

)

Video

Compos

itor

Video

Compos

itor

Mux

Mux

Mux

Mux

CSC

(Matrix)

CSC

(Matrix)

Digital

Video

Formatter

Digital

Video

Formatter

VIDEO

_ENC

_PRIM

_CONTROL.S

ELECT

656

656

CSC

(Matrix)

CSC

(Matrix)

Digital

Video

Formatter

Digital

Video

Formatter

DVI

Interface

DVI

Interface

Mux

Mux

Mux

Mux

Cross

Bar

Cross

Bar

CSC

(Matrix)

CSC

(Matrix)

Video

Fo

rmatter

V

ideo

Formatter

SUB-Carrier

Modulator

SUB-Carrier

Modulator

Input

Tim

ing

Inp

ut

Tim

ing

VIDEO

_ENC

_BYPASS

_CONTROL.S

ELE

CT

Digital

Timing

RAM

Digital

Timing

RAM

Digital

Timing

Generator

Digital

Timing

Gener

ator

Digital

Timing

Generator

Digital

Timing

Gener

ator

MISC

_ITU656

_IN

_MUX.S

ELECT

MISC

_DVI_IN

_MUX.S

ELECT

656

DVI

DAC3

DAC2

DAC1

DAC0


36/45

- 36 -

-Exp

lana

tion

Mpeg

Fee

derA

ndVideo

Fee

der

(MFDand

VFD)

-Mpeg

Fee

deris

ada

tapa

tho

fVSBor

QAMdeco

de

ds

igna

l.Theses

igna

lsgo

tothe

Minititano

fBCM3

550

.

-In

them

inititan

bloc

kdoprocess

ing

the

MPE

Gan

dv

ideo.

VDEC(VideoD

isp

lay

Deco

der)

-Thisbloc

khas

severa

lde

tailedbloc

k.

Itcan

han

dlethe

inpu

tcompos

ites

igna

lforexamp

le,

Y/Csepara

tion,

co

lor

deco

ding

,au

toga

incon

tro

l,e

tc.

AFE

AFE

Front

End

Front

End

Y/C

Separation

Y/C

Separation

Chroma

Demo

Chroma

Demo

Back

End

Back

End

VDECDe

tailBloc

k

BVB

Interface

BVB

Interface

Digita

lInpu

t

-Digita

linpu

tcan

han

dledigita

lv

ideos

ignal.

Inoursys

tem

throug

hthispa

th,

componen

t,RGBPC

,HDMI/DVIs

igna

ls

are

deco

de

d.S

othispa

thisvery

important

bloc

kinoursys

tem.

Exp

lana

tion


37/45

- 37 -

-TV/CATVdoesn

'tdisp

lay

CheckTU4001Pin9

(Videooutput)

Canyouseethen

ormalsignal?

Checktheinput(Pin63)ofAV

switch(IC5

003).

Canyouseethenor

malwaveform?

Checktheoutput(Pin56)ofAV

switch(IC5

003).

Canyouseethenor

malwaveform?

Checktheinput(Pin1

)ofLPF(IC4006).

Canyouseethenor

malwaveform?

YES

YES

YES

NO

C

ouldyoumeasurevoltageofTU4001&

IIClines?

Aretheyallnormal?

Checktheoutput(Pin8

)ofLPF(IC4006).

Canyouseethenor

malwaveform?

YES

Checktheinput

(PinH26)of

BCM3550(IC

4006).

Measurewaveforma

tC

1010becauseits

moreeasyto

check.

Canyouseethenor

malwaveform?

YES

NO

Youshouldchec

kpowerline

&IIClin

es.

YES

YoushouldreplaceTUNER.

NO

AftercheckingthePowerofAVswitchyou

shoulddecidetoreplaceAVswitchornot.

NO


shoulddecidetoreplaceAVswitchornot.

NO

AftercheckingthePowerofLPFy

oushould

decidetoreplaceLPF

orn

ot.

NO

AftercheckingthePowerofLPFy

oushould

decidetoreplaceLPF

orn

ot.

YEX

Thisboardhasbigproblembeca

useMain

chip(BCM3550)havesometro

ubles.

Aftercheckingthoroughlyallpathonceagain,

YoushoulddecidetoreplaceBCM3

550ornot.


38/45

- 38 -

-Video

doesn

'tdisp

lay

CheckJ5007Pin3C

Canyouseethenormalwaveform?

Checktheinput(Pin1orPin8)ofAV

switch(IC5003).Pin1isforvideo1,Pin8

is

forvideo2.


Checktheoutput(Pin56)ofAV

switch(IC5003).


C

hecktheinput(Pin1)ofLPF(IC4006).


YES

YES

YES

NO

J5007mayhave

problem.Replacethis

Jack.

Ch

ecktheoutput(Pin8)ofLPF(IC4006).


YES

Checktheinput(PinH26)of

BCM3550(IC4006).

Measurewaveforma

tC1010becauseits

moreeasytocheck.


YES

NO


shoulddecide

toreplaceAVswitchornot.

NO


shoulddecide

toreplaceAVswitchornot.

NO

Afterchecking

thePowerofLPFyoushould

decide

toreplaceLPF

ornot.

NO

Afterchecking

thePowerofLPFyoushould

decide

toreplaceLPF

ornot.

YEX

Thisboardha

sbigproblembecauseMain

chip(BCM3

550)havesometroubles.


Youshoulddec

idetoreplaceBCM3550ornot.


39/45

- 39 -

-Componen

tdoesn

'tdisp

lay

CheckJ5004,J5005.

C

anyouseethenormalwaveform?

ChecktheinputofComponent

switch(IC5001,IC5002).

C


ChecktheoutputofComponent

switch(IC5001,IC5002).

C


C

hecktheinputofMST3361(IC7004

Pin41,44,46).

C


YES

YES

YES

NO

J5004,J5005may

haveproblem.Replacethis

Jack.

Ch

ecktheoutputofMST3361(IC7004).

C


YES

Checktheinputandoutputof

BCM

3550(IC4006).Especiallyyoushould

check

TheH,Vsyncandclock.

C


YES

NO

Aftercheckingth

einputTRofcomponent,you

shoulddecideto

replacecomponentswitchor

not.

NO

NO

Afterchecking

thePowerofMST3361you

shoulddecide

toreplaceMST3361ornot.

NO

YEX

ThisboardhasbigproblembecauseMain

chip(BCM3550)havesometroubles.


Youshoulddeci

detoreplaceBCM3550ornot.

Afterchecking

thePowerofcomponentswitch

youshoulddecidetoreplacecomponentswitch

ornot.

Afterchecking


shoulddecide



40/45

- 40 -

-RGB

_PCdoesn

'tdisp

lay

CheckinputconnectP7004.

C


ChecktheinputofComponent

switch(IC5002).

C


ChecktheoutputofComponent

switch(IC5002).

C


C

hecktheinputofMST3361(IC7004

Pin41,44,46).

C


YES

YES

YES

NO

P7004

mayhaveproblem.ReplacethisJack.

Ch

ecktheoutputofMST3361(IC7004).

C


YES


BCM


check

TheH,Vsyncandclock.

C


YES

NO

Afterchecking

theinputTRofRGBHV,you

shoulddecideto

replacethesecomponentsor

not.

NO

NO

Afterchecking


shoulddecide


NO

YEX

ThisboardhasbigproblembecauseMain

chip(BCM3550)havesometroubles.


Youshoulddeci

detoreplaceBCM3550ornot.

Afterchecking

thePowerofRGBswitchyou

shoulddecidetoreplacecomponentswitchor

not.

Afterchecking


shoulddecide



41/45

- 41 -

-HDMIdoesn

'tdisp

lay

CheckinputconnectP7007.


Chec

kDDCcommunicationlines(IC7013

Pin5,6)

Che

cktheinputofMST3361(IC7004)

ThissignalisTMDS.


YES

YES

NO

P7007mayhavepro

blem.ReplacethisJack.

Chec

ktheoutputofMST3361(IC7004).


YES


BCM3


check

TheH,Vsyncandclock.


YES

NO

NO

Aftercheckingthe

traceofTMDSlinesandpowerof

MST3361,yousho

ulddecidetoreplaceMST3361or

not.

NO

YEX

Thisboardhasb

igproblembecauseMain

chip(BCM355

0)havesometroubles.

Aftercheckingtho

roughlyallpathonceagain,

Youshoulddecide

toreplaceBCM3550ornot.

Afterchecking

thePowerofthischip,you

shoulddecidetoreplacethisornot.

AftercheckingthePowerofMST3361you

shoulddecidetoreplaceMST3361ornot.

YES

Chec

kHDCPcommunicationlines(IC700

5

Pin5,6)

NO

Aftercheckin

gthePowerofthischip,you

shoulddecidetoreplacethisornot.


42/45

- 42 -

EXPLODED VIEW

430

600

301

300

200

590

120

530

201

580

520

400

521

203

204

205

202

206

591

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


43/45


44/45


45/45

Mar., 2007

Printed in KoreaP/NO : MFL36768813

Lg La73e Chassis 32lc7d C-ub Lcd Tv Sm

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Transcript of Lg La73e Chassis 32lc7d C-ub Lcd Tv Sm