LCD TV SERVICE MANUAL MODEL : 47LG5000 47LG5000-ZA

Internal Use Only

website:http://biz.LGservice.com

LCD TV

SERVICE MANUAL

CHASSIS : LD84D

MODEL : 47LG5000

47LG5000-ZA

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CONTENTS

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

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

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

ADJUSTMENT INSTRUCTION ...............................................................13

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

BLOCK DIAGRAM...................................................................................23

EXPLODED VIEW .................................................................................. 24

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

Only for training and service purposes

- 2 LGE Internal Use Only

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

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

Schematic Diagram and Replacement Parts List.

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

Shock, Fire, or other Hazards.

Do not modify the original design without permission of manufacturer.

General Guidance

An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks.

It will also protect the receiver and it's components from being damaged by accidental shorts of the circuitry that may be inadvertently 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 exposed metallic parts of the cabinet, such as antennas, terminals, etc., to be 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 an electrical jumper across the two AC plug prongs. Place the AC switch in the on position, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meter lead in turn to each exposed metallic parts such as antenna terminals, phone jacks, etc.

If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1M

Ω and 5.2M

Ω

.

When the exposed metal has no return path to the chassis the reading must be infinite.

An other abnormality exists that must be corrected before the receiver 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 capacitor between a known good earth ground (Water Pipe, Conduit, etc.) and the exposed metallic parts.

Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt or more sensitivity.

Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS which is corresponds to

0.5mA.

In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer.

Leakage Current Hot Check circuit

AC Volt-meter

To Instrument's exposed

METALLIC PARTS

0.15uF

1.5 Kohm/10W

Good Earth Ground such as WATER PIPE,

CONDUIT etc.



SERVICING PRECAUTIONS

CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the

SAFETY PRECAUTIONS on 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 Precautions

1. 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 polarity installation of electrolytic capacitors may result in an explosion hazard.

unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

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

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

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

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it.

(Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

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 as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device.)

2. Test high voltage only by measuring it with an appropriate high voltage 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 its assemblies.

4. Unless specified otherwise in this service manual, clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable non-abrasive applicator; 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%-99% strength)

CAUTION: This is a flammable mixture.

Unless specified otherwise in this service manual, lubrication of contacts 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 its electrical assemblies unless all solid-state device heat sinks are correctly installed.

7. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead.

Always remove the test receiver ground lead last.

8. Use with this receiver only the test fixtures specified in this

service manual.

CAUTION: Do not connect the test fixture ground strap to any heat sink in this receiver.

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called

Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by static by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground.

Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the

General Soldering Guidelines

1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500 ° F.

2. Use an appropriate gauge of RMA resin-core solder composed of 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 wirebristle (0.5 inch, or 1.25cm) brush with a metal handle.

Do not use freon-propelled spray-on cleaners.

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

(500

°

F) b. Heat the component lead until the solder melts.

c. Quickly draw the melted solder with an anti-static, suctiontype solder removal device or with solder braid.

CAUTION: Work quickly to avoid overheating the circuitboard printed foil.

6. Use the following soldering technique.

a. Allow the soldering iron tip to reach a normal temperature

(500 ° F) 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 there only until the solder flows onto and around both the component lead and the foil.

CAUTION: Work quickly to avoid overheating the circuit board printed foil.

d.

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



IC Remove/Replacement

Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above.

Removal

1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts.

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

IC.

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 as possible to the component body.

2. Bend into a "U" shape the end of each of three leads remaining on the circuit board.

3. Bend into a "U" shape the replacement transistor leads.

4. Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the "U" with long nose pliers to insure metal to metal contact then solder each connection.

Power Output, Transistor Device


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 circuit board.

4. Insert new transistor in the circuit board.

5. Solder each transistor lead, and clip off excess lead.

6. Replace heat sink.

Diode Removal/Replacement

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

2. Bend the two remaining leads perpendicular y to the circuit board.

3. Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board.

4. Securely crimp each connection and solder it.

5.

Inspect (on the circuit board copper side) the solder joints of the two "original" leads. If they are not shiny, reheat them and if necessary, apply additional solder.

Fuse and Conventional Resistor


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

2. Securely crimp the leads of replacement component around notch at stake top.

3. Solder the connections.

CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures.

- 5 -

Circuit Board Foil Repair

Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or "lift-off" the board. The following guidelines and procedures should be followed whenever this condition is encountered.

At IC Connections

To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections).

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

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

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

4. Route the jumper wire along the path of the out-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area and clip off any excess jumper wire.

At Other Connections

Use the following technique to repair the defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board.

1. Remove the defective copper pattern with a sharp knife.

Remove at least 1/4 inch of copper, to ensure that a hazardous condition will not exist if the jumper wire opens.

2. Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly connected 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 lead of the nearest component on the other side.

Carefully crimp and solder the connections.

CAUTION: Be sure the insulated jumper wire is dressed so the it does not touch components or sharp edges.

LGE Internal Use Only


SPECIFICATION

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

1. Application Range.

This spec sheet is applied to the 37"/42"/47"/52" LCD TV used

LA84A chassis.

3. Test method

2. Specification

Each part is tested as below without special appointment

3.1 Performance : LGE TV test method followed.

3.2 Demanded other specification

Safety : CE, IEC specification

EMC : CE, IEC

2.1 Temperature : 25±5°C(77±9°F), CST : 40±5°C

2.2 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 followed each drawing and specification by part number in accordance with BOM .

2.5 The receiver must be operated for about 5 minutes prior to the adjustment.

4. General Specification

No

1

2

3

Item

Display Screen Device

Aspect Ratio

LCD Module

LCD

Remark

4 Operating Environment

5 Storage Environment

6

7

Input Voltage

Power Consumption

8 Type Size

9 Pixel Pitch

10 Back Light

11 Display Colors

12 Coating

Specification

37/42/47/52" wide Color Display Module

16:9

37" TFT LCD FHD

42" TFT LCD FHD

47" TFT LCD FHD

52" TFT LCD FHD

Temp. : 0 ~ 40 deg

Humidity : 0 ~ 85%

Temp. : -20 ~ 60 deg

Humidity : 0 ~ 85 %

AC100 ~ 240V, 50/60Hz

Power on (Green)

37"

42"

47"

52"

≤

132W ( 7.86 + 125 W)

≤

197W (13.2 + 184 W)

≤

242W (26.4 + 216.1 W)

≤

335W (20.16 + 315 W)

37" 877(H) x 516.8(V) x 55.5(D)

42" 983.0(H) x 576.0(V) x 52.7(D)

47"

52"

37"

42"

47"

52"

37"

42"

1096.0(H) x 640.0(V) x 51.0(D)

1219.0(H) x 706.7(V) x 64.6(D)

0.42675(H) x 0.42675(V)

0.4845

0.5415 (H) x 0.1805(V)

0.600(H) x 0.600(V)

TBD(EEFL), Straight type

18pcs, Straight type

47"

52"

20CCFL, Straight type

24CCFTs, direct type

16.7M (16,777,216)

3H, AG

- 6 -

MAKER : 37"- LPL

42"- AUO

47"- CMO

52"- SHARP

LGE SPEC

LG5000

LCD + Backlight

LG5000

With inverter

LG5000

LG5000



5. MODEL General Specification

No

1

Item

Broadcasting system

2 Receiving system

3 Scart Jack (2EA)

1) PAL-BG

2) PAL-DK

3) PAL-I/I’

4) SECAM L/L’

Specification

5) DVB-T (ID TV)

Analog : Upper Heterodyne

Digital : COFDM

PAL, SECAM

4 Video Input RCA(1EA)

5 S-Video Input (1EA)

6 Component Input (1EA)

7

8

RGB Input

HDMI Input (3EA)

9 Audio Input (3EA)

10

11

SDPIF out (1EA)

Earphone out (1EA)

12 USB (1EA)

Remarks

PAL, SECAM, NTSC

PAL, SECAM, NTSC

Y/Cb/Cr

Y/Pb/Pr

RGB-PC

HDMI1-DTV/DVI

HDMI2-DTV

HDMI3-DTV

RGB/DVI Audio

Component

AV

SPDIF out

Antenna, AV1, AV2, AV3, Component,

RGB, HDMI1, HDMI2, HDMI3

Scart 1 Jack is Full scart and support

RF-OUT(analog)

Scart 2 jack is Half scart and support

MNT/DTV-OUT.

4 System :

PAL, SECAM, NTSC, PAL60

4 System :

PAL, SECAM, NTSC, PAL60

Analog(D-SUB 15PIN)

PC(HDMI version 1.3)

Support HDCP

L/R Input

For service only



6. Chroma & Brightness

6.1 37"LCD Module

No.

1.

2.

3.

4.

Viewing Angle<CR>10>

Luminance

Contrast Ratio

Item

CIE Color Coordinates

Specification

Right/Left/Up/Down

Luminance (cd/m2)

Variation

CR

White WX

RED

Green

Blue

WY

Xr

Yr

Xg

Yg

Xb

Yb

Min.

89

400

1000

Typ

-0.03

1) Standard Test Condition (The unit has been ‘ON’)

2) Stable for approximately 30 minutes in a dark environment at 25±2_

3) The values specified are at approximate distance 50Cm from the LCD surface

4) Ta= 25±2°C, VLCD=12.0V, fV=60Hz, Dclk=148.5MHz VBR_A=1.6V, ExtVBR_B=100%

Typ.

500

-

1400

0.279

0.292

0.641

0.334

0.291

0.614

0.145

0.062

6.2 42"LCD Module

No.

1.

2.

3.

4.

Luminance

Contrast Ratio

Item



Specification

Right/Left/Up/Down

Luminance (cd/m2)

Variation

CR

White

RED

WX

WY

Xr

Green

Blue

Yr

Xg

Yg

Xb

Yb

1000

Typ

-0.03

1) Standard Test Condition(The unit has been ‘ON’)

2) Stable for approximately 60 minutes in a dark environment at 25_


Min.

400

Typ.

89

500

-

1500

0.280

0.290

0.640

0.330

0.290

0.600

0.150

0.060

Max.

Max.

Remark

1.3

MAX / MIN

Typ

+0.03

LPL(37")

Remark

1.3

MAX / MIN

Typ

+0.03

AUO(42")



6.3 47"LCD Module

No.

1.

2.

3.

4.


Luminance

Contrast Ratio

Item


Specification

Right/Left/Up/Down

Luminance (cd/m2)

Variation

CR

White WX

RED

Green

Blue

WY

Xr

Yr

Xg

Yg

Xb

Yb

Min.

80

450

1800

Typ

-0.03

1) Stable for approximately 60 minutes in a dark environment at 25±2_ and windless room

2) Ambient Humidity: 50±1%RH

3) Supply Voltage: 12V

4) Lamp Current: 5.2±0.5mA

5) Oscillating Frequency: 66±3KHz

6) Frame rate: 60Hz

0.285

0.638

0.331

0.272

0.590

0.144

0.068

Typ.

88

500

-

2000

0.280

6.4 52"LCD Module

No.

1.

2.

3.

4.

Item


Luminance

Contrast Ratio


Specification

Right/Left/Up/Down

Luminance (cd/m2)

Variation

CR

White

RED

WX

WY

Xr

Green

Blue

Yr

Xg

Yg

Xb

Yb

1) Standard Test Condition (The unit has been ‘ON’)

2) Stable for approximately 30 minutes in a dark environment at 25±2_


4) Ta=25°C, Vcc=12.0V, VINV =24.0V, VBRT=3.3V, Timing: 60Hz (typ. value)

5) Measurement condition: Set the value of VBRT to maximum luminance of white.

Min.

70

360

1000

Typ

-0.03

Typ.

88

450

-

1500

0.272

0.277

0.640

0.330

0.280

0.600

0.150

0.060

Max.

Remark

1.3

MAX / MIN

Typ

+0.03

CMO(47")

Max.

Remark

1.25

MAX / MIN

Typ

+0.03

SHARP(52")



- 9 -

8

9

6

7

10

7. SET Optical Feature

(Measurement Condition: Full white/ Dynamic) -> Measure the black luminance after 30 seconds.

No

1

3

3

4

Item

37 inch

42 inch

47 inch

52 inch module

LPL

AUO

CMO

SHARP

Luminance (min)

AV, COMPONENT, HDMI

400cd/m 2

400cd/m

2

400cd/m 2

360cd/m 2

C/R(min)

AV, COMPONENT, HDMI

1000

1000

1000

1000

Remark

LG5000

C/R is excepted for PC mode.

8. Component Video Input (Y, P

B

, P

R

)

No.

1. 720x480

2. 720x480

3. 720x480

4. 720x480

Specification

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

15.73

15.63

31.47

31.50

60.00

59.94

59.94

60.00

SDTV, DVD 480i

SDTV, DVD 480i

Remark

SDTV, DVD 625 Line 5. 720x576

6. 720x576

7. 1280x720

8. 1280x720

9. 1280x720

10. 1920x1080

11. 1920x1080

12. 1920x1080

15.625

31.25

45.00

44.96

37.50

31.25

33.75

33.72

50.00

50.00

60.00

59.94

50

50.00

60.00

59.94

HDTV 720p 50Hz

13.

1920x1080

14.

1920x1080

15.

1920x1080

56.25

67.433

67.50

50.00

59.94

60

HDTV 1080P

HDTV 1080P

HDTV 1080P

9. RGB PC

No

1.

2.

Resolution

720*400

640*480

3 800*600

4.

5

832*624

1024*768

1280*768

1360*768

1366*768

1280*1024

1920*1080

H-freq(kHz)

31.468

31.469

37.684

37.879

46.875

49.725

48.363

56.470

60.123

47.78

47.72

47.56

63.595

66.647

V-freq.(Hz)

70.08

59.94

75.00

60.31

75.00

74.55

60.00

70.00

75.029

59.87

59.8

59.6

60.0

59.988

Pixel clock(MHz)

28.321

25.17

31.50

40.00

49.50

57.283

65.00

75.00

78.75

79.5

84.75

84.75

108.875

138.625

Proposed

VESA

VESA

Macintosh

VESA(XGA)

WXGA

WXGA

WXGA

SXGA

WUXGA

Remarks

Input 848x480 60Hz, 852x480 60Hz

=> 640x480 60Hz Display

FHD Model only

FHD Model only



10. HDMI Input (DTV)

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

1.

720*480

2.

720*480

3.

640*480

4.

640*480

31.47

31.50

31.469

31.469

59.94

60

59.94

60.00

27.00

27.027

25.175

25.20

5.

720*480

6.

720*480

7.

720*576

8.

1280*720

9.

1280*720

10.

1280*720

11 1920*1080

12 1920*1080

31.47

31.50

31.25

37.50

44.96

45.00

33.72

33.75

59.94

60.00

50.00

50.00

59.94

60.00

59.94

60.00

27.000

27.027

27.000

74.176

74.176

74.250

74.176

74.250

13 1920*1080

14 1920*1080

15 1920*1080

16 1920*1080

17 1920*1080

28.125

27.000

56.250

67.433

67.500

50.00

24.00

50

59.94

60

74.250

74.250

148.500

148.352

148.500

Proposed

SDTV 480P(4:3)

SDTV 480P(4:3)

SDTV 480P(4:3)

SDTV 480P(4:3)

SDTV 480P(16:9)

SDTV 480P(16:9)

SDTV 576P

HDTV 720P

HDTV 720P

HDTV 720P

HDTV 1080I

HDTV 1080I

HDTV 1080I 50Hz

HDTV 1080P 24Hz

HDTV 1080P 50Hz

HDTV 1080P

HDTV 1080P

11. HDMI Input (PC)

NoResolution

1.

720*400

2.

640*480

3 800*600

4.

832*624

5 1024*768

6 1280*768

7 1360*768

8 1366*768

9 1280*1024

10 1920*1080

56.470

60.123

47.78

47.72

47.56

63.595

66.647

H-freq(kHz)

31.468

31.469

37.684

37.879

46.875

49.725

48.363

70.00

75.029

59.87

59.8

59.6

60.0

59.988

V-freq.(Hz)

70.08

59.94

75.00

60.31

75.00

74.55

60.00

Pixel clock(MHz)

28.321

25.17

31.50

40.00

49.50

57.283

65.00

75.00

78.75

79.5

84.75

84.75

108.875

138.625

Proposed

VESA

VESA

Macintosh

VESA(XGA)

WXGA

WXGA

WXGA

SXGA

WUXGA

HDCP

HDCP

HDCP

HDCP

HDCP

HDCP

HDCP

HDCP

HDCP

HDCP

HDCP

HDCP

Remarks

HDCP

HDCP

HDCP

Remark

HDCP

HDCP

HDCP

FHD Model only, HDCP

FHD Model only, HDCP



12. Mechanical specification

12-1. 37LG5000

No. Item

1. Product

Dimension

2. Product

Before Packing

After Packing

Only SET

With BOX

Widt(W) Length(D) Height(H) mm

936.4

293.8

684.4 mm With Stant

1195 253

18.3

665 mm

Kg

23 Kg

12-2. 42LG5000

No. Item

1. Product

Dimension

2. Product

Before Packing

After Packing

Only SET

With BOX


1034 293.4

735 mm With Stant

1330 257

23.5

772 mm

Kg

26.2

Kg

12-3. 47LG50

No. Item

1. Product

Dimension

2. Product

Before Packing

After Packing

Only SET

With BOX


1156.2 342.9

813.1

mm With Stant

1266 460

29.5

887 mm

Kg

35.4 Kg

12-4. 52LG5000

No. Item

1. Product

Dimension Before Packing

2. Product

After Packing

Only SET

With BOX


1291.7

342.9

892.2

mm With Stant

1386 976 411

39.5

46.2 mm

Kg

Kg



ADJUSTMENT INSTRUCTION

1. Application Range

These instructions are applied to all of the LCD TV, LD84D

Chassis.

file(XXXX.bin) by clicking "Read"

(4) filexxx.bin

2. Notice

2.1 The adjustment is according to the order which is designated and which must be followed, according to the plan which can be changed only on agreeing.

2.2. Power Adjustment: Free Voltage

2.3. Magnetic Field Condition: Nil.

2.4. Input signal Unit: Product Specification Standard

2.5. Reserve after operation: Above 5 Minutes (Heat Run)

Temperature : at 25°C±5°C

Relative humidity : 65 ±10%

Input voltage : 220V, 60Hz

2.6. Adjustment equipments: Color Analyzer (CA-210 or CA-

110), Pattern Generator (MSPG-925L or Equivalent),

DDC Adjustment Jig equipment, SVC remote controller

2.7. Don’t push The "IN STOP KEY" after completing the function inspection.

5. Click "Auto" tab and set as below

6. Click "Run".

7. After downloading, check "OK" message.

filexxx.bin

(5)

(6)

(8)...........OK

3. Main PCB check process

(7)

O

APC - After Manual-Insult, executing APC

O

Download

1. Execute ISP program "Mstar ISP Utility" and then click

"Config" tab.

2. Set as below, and then click "Auto Detect" and check

"OK" message.

If display "Error", Check connect computer, jig, and set.

3. Click "Connect" tab.

If display "Can’t ", Check connect computer, jig, and set.

(1) (3)

(2) OK

Controllare la frequenza:

Usare una frequenza da

200KHz a 400KHz



O

USB DOWNLOAD

1. Put the USB Stick to the USB socket

2. Automatically detecting update file in USB Stick

- If your downloaded program version in USB Stick is

Low, it didn’t work. But your downloaded version is High,

USB data is automatically detecting

3. Show the message "Copying files from memory"

3.1 ADC Process

3.1.1 PC input ADC

3.1.1.1 Auto RGB Gain/Offset Adjustment

- Convert to PC in Input-source

- Signal equipment displays

Output Voltage: 700 mVp-p

Impress Resolution XGA (1024 x 768 @ 60Hz)

Model : 60 in Pattern Generator

Pattern : 65 in Pattern Generator (MSPG-925 SERISE)

4. Updating is staring.

5. Updating Completed, The TV will restart automatically.

6. If your TV is turned on, check your updated version and

Tool option. (explain the Tool option, next stage)

* If downloading version is more high than your TV have, TV can lost all channel data. In this case, you have to channel recover. if all channel data is cleared, you didn’t have a

DTV/ATV test on production line.

O

After downloading, have to adjust TOOL OPTION again.

1. Push "IN-START" key in service remote controller

2. Select "Tool Option 1" and Push "OK" button

3. Punch in the number. (Each model has their number.)

4. Completed selecting Tool option

Adjustment pattern (PC )

- Adjust by commanding AUTO_COLOR_ADJUST.

3.1.1.2 Confirmation

- We confirm whether "0xAA (RGB)" address of EEPROM

"0xA2" is "0xAA" or not.

- If "0xAA (RGB)" address of EEPROM "0xA2" isn’t "0xAA", we adjust once more

- We can confirm the ADC values from "0xA4~0XA9 (RGB)" addresses in a page "0xA2"

*Manual ADC process using Service Remocon. After enter

Service Mode by pushing "ADJ" key, execute "ADC Adjust" by pushing " " key at "ADC

CALIBRATION: RGB-PC".

3.2.1 COMPONENT input ADC

3.2.1.1 Component Gain/Offset Adjustment

- Convert to Component in Input-source

- Signal equipment displays

Impress Resolution 480i



MODEL: 209 in Pattern Generator(480i Mode)

PATTERN : 65 in Pattern Generator( MSPG-925 SERISE)


MODEL: 223 in Pattern Generator(1080i Mode)

PATTERN: 65 in Pattern Generator( MSPG-925 SERISE)

3.2 Function Check

3.2.1 Check display and sound

-Check Input and Signal items. (cf. work instructions)

1. TV

2. AV (SCART1/SCART2/S-VHS/CVBS)

3. COMPONENT (480i)

4. RGB (PC : 1024 x 768 @ 60hz)

5. HDMI

6. PC Audio In

* Display and Sound check is executed by Remote controller.

Adjustment pattern (COMPONENT )

- Adjust by commanding AUTO_COLOR_ADJUST.

3.2.1.2 Confirmation

- We confirm whether "0xB3 (480i)/0xBC (1080i)" address of

EEPROM "0xA2" is "0xAA" or not.

- If "0xB3 (480i)/0xBC(1080i)" address of EEPROM "0xA2" isn’t "0xAA", we adjust once more

- We can confirm the ADC values from "0xAD~0XB2

(480i)/0XB6~BB (1080i)" addresses in a page "0xA2"

*Manual ADC process using Service Remocon. After enter

Service Mode by pushing "ADJ" key, execute "ADC Adjust" by pushing " " key at "ADC

CALIBRATION :COMPONENT".


4. Total Assembly line process

4.1 Adjustment Preparation

- W/B Equipment condition

CA210: CH 9, Test signal: Inner pattern (85IRE)

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

- 15 Pin D-Sub Jack is connected to the AUTO W/B

EQUIPMENT.

- Adjust Process will start by execute I2C Command (Inner pattern (0xF3, 0xFF).

Color Cool 11,000k

°

K X=0.276 (±0.002) LG5000 <Test Signal>

Temperature Y=0.283 (±0.002) Inner pattern

Medium 9,300k

°

K X=0.285 (±0.002)

Y=0.293 (±0.002)

Warm 6,500k

°

K X=0.313 (±0.002)

Y=0.329 (±0.002)

(216gray,85IRE)

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

** Caution **

Color Temperature: COOL, Medium, Warm

One of R Gain/G Gain/ B Gain should be kept on 0xC0, and adjust other two lower than C0.

(when R/G/B Gain are all C0, it is the FULL Dynamic Range of

Module)

*Manual W/B process using adjusts Remote control.

- After enter Service Mode by pushing "ADJ" key,

- Enter White Pattern off of service mode, and change off -> on.

- Enter "W/B ADJUST" by pushing " " key at "3. W/B ADJUST".




- After done all adjustments, Press "In-start" button and compare

Tool option and Area option value with its BOM, if it is correctly same then unplug the AC cable. If it is not same, then correct it same with BOM and unplug AC cable. For correct it to the model’s module from factory JIG model.

- Don’t push The "IN STOP KEY" after completing the function inspection.

4.2 DPM operation confirmation (Only Apply for MNT Model)

• Check if Power LED Color and Power Consumption operate as standard.

- Set Input to RGB and connect D-sub cable to set

- Measurement Condition: (100~240V@ 50/60Hz)

- Confirm DPM operation at the state of screen without Signal

4.3 DDC EDID Write (RGB 128Byte)

- Connect D-sub Signal Cable to D-Sub Jack.

- Write EDID DATA to EEPROM (24C02) by using DDC2B protocol.

- Check whether written EDID data is correct or not.

4.4. DDC EDID Write (HDMI 256Byte)

- Connect HDMI Signal Cable to HDMI Jack.

- Write EDID DATA to EEPROM(24C02) by using DDC2B protocol.

- Check whether written EDID data is correct or not

4.5. Serial number (RS-232C)

- Press "Power on" key of service remocon.(Baud rate :

115200 bps)

- Connect RS232 Signal Cable to RS-232 Jack.

- Write Serial number by use RS-232.

- Must check the serial number at the Diagnostics of SET UP menu. (Refer to below).



4.5 EDID DATA

Note) Because downloading can be down at the power on mode only, if it is not set, press the Power ON key of the remote controller to proceed.

O

HDMI1 EDID (DDC (Display Data Channel) Data

0 1 2 3 4 5 6 7 8 9 A B C D E F

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 AF CF 00 31 40 45 40 61 40 81 80 A9 40

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 02 3A 80 18 71 38 2D 40

50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30

60 58 1F 64 11 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 8A

0 1 2 3 4 5 6 7 8 9 A B C D E F

0 02 03 18 F1 47 84 05 03 02 20 22 10 23 15 07 50

10 67 03 0C 00 10 00 B8 2D 01 1D 00 72 51 D0 1E 20

20 6E 28 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C

30 16 20 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 8A

40 20 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A

50 D0 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18

60 26 36 80 A0 70 38 1F 40 30 20 25 00 C4 8E 21 00

70 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 00 27

O


0 1 2 3 4 5 6 7 8 9 A B C D E F

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 AF CF 00 31 40 45 40 61 40 81 80 A9 40

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 02 3A 80 18 71 38 2D 40

50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30

60 58 1F 64 11 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 8A

0 1 2 3 4 5 6 7 8 9 A B C D E F

0 02 03 18 F1 47 84 05 03 02 20 22 10 23 15 07 50

10 67 03 0C 00 30 00 98 25 01 1D 00 72 51 D0 1E 20

20 6E 28 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C

30 16 20 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 8A

40 20 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A

50 D0 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18

60 26 36 80 A0 70 38 1F 40 30 20 25 00 C4 8E 21 00

70 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 00 2F

O


0 1 2 3 4 5 6 7 8 9 A B C D E F

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 AF CF 00 31 40 45 40 61 40 81 80 A9 40

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 02 3A 80 18 71 38 2D 40

50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30

60 58 1F 64 11 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 8A

0 1 2 3 4 5 6 7 8 9 A B C D E F

0 02 03 18 F1 47 84 05 03 02 20 22 10 23 15 07 50

10 67 03 0C 00 20 00 B8 2D 01 1D 00 72 51 D0 1E 20

20 6E 28 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C

30 16 20 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 8A

40 20 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A

50 D0 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18

60 26 36 80 A0 70 38 1F 40 30 20 25 00 C4 8E 21 00

70 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 00 17

O

Analog (RGB) EDID table

0 1 2 3 4 5 6 7 8 9 A B C D E F

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

10 00 11 01 03 18 73 41 96 0A CF 74 A3 57 4C B0 23

20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40

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 1A 02 3A 80 18 71 38 2D 40

50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30

60 58 1F 64 11 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 F6

0 1 2 3 4 5 6 7 8 9 A B C D E F

0 02 03 04 00 0E 1F 00 80 51 00 1E 30 40 80 37 00

10 C4 8E 21 00 00 1C F1 27 00 A0 51 00 25 30 50 80

20 37 00 C4 8E 21 00 00 1C 26 36 80 A0 70 38 1F 40

30 30 20 25 00 C4 8E 21 00 00 0A 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 BC



5. Adjusting the White Balance

5.1 Overview

- Purpose and principle for adjusting the white balance

- Purpose : Adjust the white balance to reduce the deviation of the module.

- Principle: The full dynamic range of the module when the

RGB gain on the OSD is 192. In order to adjust the white balance with no saturation of the full dynamic range and the data, fix one of the RGB gains to 192 and decrease the remaining two gains to adjust

5.2 Device to use

1) Color Analyzer : CA-210 (NCG: CH 9 / WCG: CH12)

2) Computer to adjust (needed for the automatic adjustment, possible to communicate with the RS-232C)

3) Adjustment remote controller

4) Video Signal Generator MSPG-925F 720p/216Gray

(Model:217, Pattern:78)

=> Applied only when the inner pattern cannot be used

*Use the Color Analyzer with the matrix calibrated by the CS-

1000

5.3 Measuring instrument wiring diagram

5.4 RS-232C Command used for the automatic adjustment

wb wb wb wb wb

RS-232C COMMAND

[CMD ID DATA] wb 00 00

Meaning

White Balance adjustment start.

00

00

00

00

00

10

1f

20

2f ff

Start of adjust gain (Inner white pattern)

End of gain adjust

Start of offset adjust(Inner white pattern)

End of offset adjust

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 00 2fend)

- "wb 00 ff": End of white balance adjustment (inner pattern disappear)

6. How to adjust

6.1 How to adjust automatically

1) The adjustment condition should be set by the Power On key.

2) Perform the zero calibration of the Color Analyzer and place the probe close to the display center.

3) Connect the communication cable (RS-232C).

4) Select the desired model of the adjustment program and perform the adjustment.

5) After the adjustment is ended (check the OK sign), check the adjustment condition for each mode of the set.

(Warm, Medium, Cool)

6) Disconnect the probe and the communication cable to end the adjustment.

* The adjustment should be started with "wb 00 00" and ended with "wb 00 ff", and the offset should be adjusted when necessary.

6.2 How to adjust manually

1) The adjustment condition should be set by the Power On key.

2) Press the ADJ of the R/C to enter into 'EZ-ADJUST'.

3) Select '10.TEST PATTERN' with the CH +/- key and press the Enter key for 30 minutes or longer to perform the heat run.

4) Perform the zero calibration of the Color Analyzer and fix the sensor with the 10cm or less distance at the center of the LCD module surface when adjusting.

5) Press the ADJ of the R/C to select '7.White-Balance' of the

Ez-Adjust and press the right arrow key(

G

) to enter into the adjustment mode.

(As soon as you press '

G

', the screen is entered into the full white inner pattern.)

6) Fix one of the R/G/B gains to 192 and decrease the remaining two gains to adjust not to exceed 192.

7) The adjustment is done at three white balances of Cool,

Medium and Warm.

* The inner pattern is basically used, and if it is not possible, the adjustment can be done by selecting the HDMI input. NONE,

INNER or HDMI can be selected by the bottom option at the Ez

Adjust Menu 7.White Balance menu and it is set to INNER as default. If the adjustment cannot be done by the inner pattern, select the HDMI to adjust.

* Adjustment environment and reference

1) Environment illuminance

Adjust it to 10 LUX or less at the place where the light source such as lamp should be blocked at maximum.

2) Probe location

- PDP: Locate the Color Analyzer (CA-100, CA-100+,

CA210) close to the module surface to measure and adjust

- LCD: Maintain the Color Analyzer (CA-210) close to the module surface by 10cm or less and keep the probe of the Color Analyzer perpendicular to the module surface (80°~ 100°).

3) Aging time

- Keep the power on after the aging start (with no power off) to perform the heat run for 15 minutes or longer.

- Keep the white pattern with the inner pattern for the PDP.

- For the LCD, make sure that the back light is turned on by using no signal and the full white pattern or others.



6.3 Reference

(White Balance adjustment coordinate and

White balance)

O

Brightness: Full white 216 Gray

O

Standard color coordinate and white balance when using the

CS-1000

Color temperature

COOL

MEDIUM

WARM

Color Coordination

Temp x y

0.276

0.283

11000K

0.285

0.313

0.293

0.324

9300K

6500K

UV

0.0000

0.0000

0.0000

O

Standard color coordinate and white balance when using the

CA-210 (CH 10)

Color temperature Test Equipment

COOL CA-210

Color Coordination x

0.276±0.002

y

0.283±0.002

MEDIUM CA-210 0.285±0.002

0.293±0.002

WARM CA-210 0.313±0.002

0.329±0.002

7. Select the option by country

7.1 Overview

- The option selection is applied to the North American model only, which selects the rating related country.

- Applied models: LA84A Chassis applied None USA

Model(Canada, Mexico)

7.2 How to select

1) Press the In-Start key of the R/C and press the red oval

OP1(PIP CH-) key to enter into the Factory Option menu.

2) Select 1.USA, 2.CANADA or 3.MEXICO from the country select according to the destination. At this time, use the volume +/- key to adjust

8. Set the shipping mode (In-stop)

- After completing the final test, in order to set the set to the shipping condition, press the In-Stop key of the R/C to make sure that the set is turned off.

9. GND and resisting pressure test

9.1 How to test

1) Preparing for the automatic test on the GND & resisting pressure

- Make sure that the power cord is completely inserted into the set. (When it is disconnected or loosened, test after inserting it)

2) Perform the automatic test on the GND & resisting pressure

- The set with power cord, the cord and the A/V completely inserted into the tuner is loaded on the pallet and entered into the automatic test process.

- Connect the D-terminal AV JACK tester

- Turn on the automatic (GWS103-4)

- Perform the GND TEST

- If it is not good, the buzzer is operated to notify the test result to the operator.

- If it is OK, it is automatically switched to the resisting pressure test. (Disconnect the cord and the A/V from the

AV JACK BOX)

- Perform the resisting pressure test

- If it is not good, the buzzer is operated to notify the test result to the operator.

- If it is OK, the GOOD LAMP is turned and the stopper is moves down, and it moves to the next process.

9.2 Items to manage

O

TEST voltage

- GND:1.5KV/min at 100mA

- SIGNAL:3KV/min at 100mA

O

TEST time:1 second

O

TEST POINT

- GND TEST = between POWER CORD GND and

SIGNAL CABLE METAL GND

- Resisting pressure TEST = between POWER CORD

GND and LIVE & NEUTRAL

O

LEAKAGE CURRENT: Set to 0.5mArms



10. ISP Download (option)

10.1 Overview

The Micom upgrade via the external port for the service for the customer.

10.2 Device to use

1) PC

2) B/D for the interface (IIC & ISP)

3) Jig for downloading (for the power supply)

10.3 Adjustment wiring diagram (Download device configuration diagram)

Main B/D

Interface B/D

10.4 Adjustment condition (Download condition)

- IC name & Circuit number: MYSON MTV416GMF & IC4015

- Power supply: 5V (P4004 Pin 3)

- SCL: D-sub Pin 10

- SDA: D-sub Pin 7

10.5 How to adjust (for downloading)

1) fter executing LGE Monitor Tools v1.1, click the first icon.

(See the figure)

3) Click the Load File Button, and select the desired Hex File to download.

(If no file is displayed, make sure that the file format is selected as Hex file (*.hex))

2) When the screen is displayed as shown at the below figure, set the items as follows:

- MCU Select: MTV512M64

- R/W Option: Auto Write(Verify)

- Jig Option: Myson

- Transmit Speed: Medium

- Check: blank

- PORT: Select the Parallel Port to use (LPT1 in general)

*caution: Select the EPP as LPT from the ROM BIAS setting.

4) Click 'Send Button'



11. USB S/W Download (option)

11.1 Overview

The USB download is for the quick service response via the S/W upgrade and for applying the S/W upgrade necessary for the board adjustment

11.2 How to dowunload

1) After turning on the set, make sure that the display screen is turned on.

2) When the USB Memory Stick with the upgrade file applied is inserted into the USB jack on the main board, the following screen (example) is displayed after several seconds

TV Software Upgrade

[ Current TV Software Version Information ]

HOMEFS(RELEASE): 00.01.01

[ New Found TV Software Version Information ]

MODEL : 42PX3D-UE

FILE : homefs-42PX3D-UE-RELEASE-0x0102.pak

HOMEFS(RELEASE) : 00.01.02

Press ENTER to start downloading the new software.

Until the whole process if completed, please

- Do not remove the memory card from the slot.

- Do not plug off.

Press EXIT to cancel the upgrade.

3) Check the current version at [Current TV Software Version

Information], check the S/W version to upgrade at [New

Found TV Software Version Information], and press the

Enter button of the TV remote controller.

4) Downloading is proceeded as shown at the below screen, and when it is ended, turning on/off is automatically done.

(When the automatic proceeding is not smoothly done, manually perform the power On/Off).

TV Software 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.

5) When downloading is ended, remove the USB Memory

Stick from the USB jack.

6) Press the IN-START button of the remote controller to check the upgraded S/W version.

- 21 -



TV/CATV doesn’t display

TROUBLESHOOTING

Check TU500 Pin15(Video output),

Pin16(Sound output)

Can you see the normal signal?

NO

YES

Check the output of TR(Q503).

Can you see the normal waveform?

YES

Check the output of Main IC(IC100).

Especially you should check

The H,V sync and clock.


YES

This board has big problem because

Main IC(IC100) have some troubles.

After checking thoroughly all path once again, You should decide to replace

Main Board or not.

NO

NO

Could you measure voltage of

TU800 & IIC lines?

Are they all normal?

YES

You should replace TUNER.

NO

You should decide to replace TR(Q503) or not.

You should check power line

& IIC lines.

After checking the Power of Main

IC(IC100) you should decide to replace

Main IC or not.



DTV doesn't display

Check the output data of TU800

Pin 24~34

Can you see the normal signal?

NO

YES

Could you measure voltage of

TU800 & IIC lines?

Are they all normal?

YES

You should replace TUNER.

NO

You should check power line

& IIC lines.





YES





NO



Main IC or not.



AV1/2/3 doesn't display

Check J600,J600,JK607,JK618


YES

NO

J600,J601 or SIDE AV may have problem. Replace this Jack or SIDE

AV.

Check the input of Video switch(IC700).


YES

NO





YES





NO

After checking the Power of AV switch you should decide to replace AV switch or not.



Main IC or not.



Component doesn't display

Check J701.


YES

NO

J701 may have problem. Replace this Jack.

Check the input of Component

Audio switch(IC1001) ,


YES

Check the output of Component

Audio switch(IC1001) ,


YES





YES





NO

NO

NO

After checking the Power of component

Audio switch, you should decide to replace component Audio switch or not.

After checking the Power of component

Audio switch you should decide to replace component Audio switch or not.



Main IC or not.



RGB PC doesn't display

Check J703 ,


YES

Check the input of RGB Video switch(IC700) ,


YES

Check the input of RGB Audio switch(IC1001) ,


YES

Check the output of RGB Audio switch(IC1001) ,


YES





YES





NO

NO

NO

NO

NO

J703 may have problem. Replace this Jack.

After checking the Power of RGB Video switch, you should decide to replace

RGB Video switch or not.

After checking the Power of RGB Audio switch, you should decide to replace

RGB Audio switch or not.

After checking the Power of RGB Audio switch you should decide to replace

RGB Audio switch or not.



Main IC or not.



HDMI doesn't display

Check input connect J900 , J901,

J902


YES

NO

Check DDC communication lines(IC900, IC901, IC903 Pin5,6)

YES

NO

NO

Check HDCP communication lines(IC902)

YES

Check the input of HDMI

Seitch(IC902)

This signal is TMDS.


YES

Check the output of HDMI

Switch(IC902).


YES





YES





NO

NO

NO

J900 , J901, J902 may have problem. Replace this Jack.

After checking the Power of this chip, you should decide to replace this or not.

After checking the Power of this chip,

After checking the trace of TMDS lines and power of HDMI Switch, you should decide to replace HDMI Switch or not.

After checking the Power of HDMI



Main IC or not.

Switch you should decide to replace

MST3361 or not.

you should decide to replace this or not.



BLOCK DIAGRAM

PCM_CD_ON

TS_Parallel

PCM_ADD

PCM_DATA

TS_Serial

SPDIF Out

Head phone Out

Side_Y/C/V/L/R


TV Tuner


EXPLODED VIEW

IMPORTANT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and 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.

Copyright LG Electronics. Inc. All right reserved.


- 29 -


P/NO : MFL41333501

Feb., 2008

Printed in Korea

LCD TV SERVICE MANUAL MODEL : 47LG5000 47LG5000-ZA

Internal Use Only

LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CONTENTS

SAFETY PRECAUTIONS

General Guidance

Before returning the receiver to the customer,

Leakage Current Cold Check(Antenna Cold Check)

Leakage Current Hot Check

Leakage Current Hot Check circuit

SERVICING PRECAUTIONS

SPECIFICATION

1. Application Range.

3. Test method

2. Specification

4. General Specification

5. MODEL General Specification

6. Chroma & Brightness

7. SET Optical Feature

8. Component Video Input (Y, P

, P

)

9. RGB PC

10. HDMI Input (DTV)

11. HDMI Input (PC)

12. Mechanical specification

ADJUSTMENT INSTRUCTION

1. Application Range

2. Notice

3. Main PCB check process

4. Total Assembly line process

4.5 EDID DATA

5. Adjusting the White Balance

5.1 Overview

5.2 Device to use

5.3 Measuring instrument wiring diagram

5.4 RS-232C Command used for the automatic adjustment

6. How to adjust

6.1 How to adjust automatically

6.2 How to adjust manually

6.3 Reference

(White Balance adjustment coordinate and

White balance)

7. Select the option by country

7.1 Overview

7.2 How to select

8. Set the shipping mode (In-stop)

9. GND and resisting pressure test

9.1 How to test

9.2 Items to manage

10. ISP Download (option)

10.1 Overview

10.2 Device to use

10.3 Adjustment wiring diagram (Download device configuration diagram)

10.4 Adjustment condition (Download condition)

10.5 How to adjust (for downloading)

11. USB S/W Download (option)

11.1 Overview

11.2 How to dowunload

TV/CATV doesn’t display

TROUBLESHOOTING

DTV doesn't display

AV1/2/3 doesn't display

Component doesn't display

RGB PC doesn't display

HDMI doesn't display

BLOCK DIAGRAM

EXPLODED VIEW

Related manuals

LG Electronics

425030

LG Electronics

47LT380C/380H-ZA

Table of contents