LG 32LV2500, 32LV2500-UA Service Manual

LED LCD TV

SERVICE MANUAL

CAUTION

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

CHASSIS : LA01U

MODEL : 32LV2500 32LV2500-UA

North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com

Internal Use Only

Printed in KoreaP/NO : MFL66990004 (1102-REV00)

Only for training and service purposes

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CONTENTS

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

SAFETY PRECAUTIONS ......................................................................... 3

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

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

EXPLODED VIEW .................................................................................. 18

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

Only for training and service purposes

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SAFETY PRECAUTIONS

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in 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 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 1MΩ and 5.2MΩ. 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

1.5 Kohm/10W

To Instrument's exposed METALLIC PARTS

Good Earth Ground such as WATER PIPE, CONDUIT etc.

AC Volt-meter

IMPORTANT SAFETY NOTICE

0.15uF

Only for training and service purposes

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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.

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

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.)

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

type solder removal device or with solder braid.

CAUTION: Work quickly to avoid overheating the circuit

board printed foil.

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

(500°F to 600°F)

b. First, hold the soldering iron tip and solder the strand against

the component lead until the solder melts.

c. Quickly move the soldering iron tip to the junction of the

component lead and the printed circuit foil, and hold it 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.

SERVICING PRECAUTIONS

Only for training and service purposes

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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 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 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 Removal/Replacement

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.

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.

Only for training and service purposes

1. Application range

This spec sheet is applied LCD TV with LA01U chassis.

2. Requirement for Test

Each part is tested as below without special appointment.

1) Temperature: 25 ºC ± 5 ºC

2) Relative Humidity: 65 ± 10 %

3) Power Voltage : Standard input voltage(100-240V~, 50/60Hz) * Standard Voltage of each product is marked by models

4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM.

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

3. Test method

1) Performance: LGE TV test method followed

2) Demanded other specification

- Safety : UL, CSA, IEC specification

- EMC: FCC, ICES, IEC specification

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SPECIFICATION

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

4. General Specification(TV)

No Item Specification Remark

1 Receivable System 1) ATSC / 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 Mark : 110V, 60Hz (N.Ame 4 Market North America 5 Screen Size 32 inch Wide (1920x1080) FHD + 60Hz 32LV3500-UA / 32LV3520-UC

37 inch Wide (1920x1080) FHD + 60Hz 37LV3500-UA 42 inch Wide (1920x1080) FHD + 60Hz 42LV3500-UA / 42LV3520-UC 47 inch Wide (1920x1080) FHD + 60Hz 47LV3500-UA 55 inch Wide (1920x1080) FHD + 60Hz 55LV3500-UA

32 inch Wide (1366x768) HD + 60Hz 32LV2500-UA 6 Aspect Ratio 16:9 7 Tuning System FS 8 LCD Module T315HW07-V8 AUO 32LV3500-UA / 32LV3520-UC

LC320EUN-SDV2 LGD 32LV3500-UA / 32LV3520-UC

T370HW05-V1 AUO 37LV3500-UA

V420H20-LE5 CMI 42LV3500-UA / 42LV3520-UC

T420HW08-V1 AUO 42LV3500-UA / 42LV3520-UC

LC420EUN-SDV3 LGD 42LV3500-UA / 42LV3520-UC

LC470EUE-SDV1 LGD 47LV3500-UA

LC550EUF-SDA1 LGD 55LV3500-UA

LC320EXN-SDA1 LGD 32LV2500-UA

T315XW06-V3 AUO 32LV2500-UA

T546HW04-V0 AUO 55LV3500-UA

LC370EUN-SDV2 LGD 37LV3500-UA

V315H3-LE7 CMI 32LV3500-UA / 32LV3520-UC 9 Operating Environment Temp : 0 ~ 40 deg

Humidity : ~ 80 %

10 Storage Environment Temp : -20 ~ 60 deg

Humidity : -85 %

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Only for training and service purposes

5. Chrominance & Luminance(Edge LED models)

No. Item Min Typ Max Unit Remarks

1 White brightness 288 360 cd/m

AUO 32LV3500-UA / 32LV3520-UC (10% decline of Module spec’) 288 360 AUO 37LV3500-UA (20% decline of Module spec’: only 47LV3500)

270 360 CMI 42LV3500-UA / 42LV3520-UC 288 360 AUO 42LV3500-UA / 42LV3520-UC 232 288 LGD 47LV3500-UA 288 360 LGD 55LV3500-UA 324 415 AUO 55LV3500-UA 261 324 LGD 37LV3500-UA 324 415 CMI 32LV3500-UA / 32LV3520-UC 250 315 AUO 32LV2500-UA 270 342 LGD 32LV2500-UA 261 324 LGD 32LV3500-UA / 32LV3520-UC

261 324 LGD 42LV3500-UA / 42LV3520-UC 2 Luminance uniformity 75 % 3 Color coordinate RED X Typ. 0.630 Typ. 32LV3500-UA (AUO)

(Default) Y -0.03 0.330 +0.03 32LV3520-UC (AUO)

GREEN X 0.320

Y 0.620

BLUE X 0.150

Y 0.040

WHITE X 0.280

Y 0.290

RED X Typ. 0.640 Typ. 37LV3500-UA (AUO)

Y -0.03 0.330 +0.03

GREEN X 0.320

Y 0.620

BLUE X 0.150

Y 0.050

WHITE X 0.280

Y 0.290

RED X Typ. 0.644 Typ. 42LV3500-UA (CMI)

Y -0.03 0.331 +0.03

GREEN X 0.295

Y 0.617

BLUE X 0.148

Y 0.053

WHITE X 0.280

Y 0.290

RED X Typ. 0.630 Typ. 42LV3500-UA (AUO)

Y -0.03 0.330 +0.03 42LV3520-UC (AUO)

GREEN X 0.320

Y 0.620

BLUE X 0.150

Y 0.040

WHITE X 0.280

Y 0.290

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Only for training and service purposes

No. Item Min Typ Max Unit Remarks

RED X Typ. 0.648 Typ. 47LV3500-UA (LGD)

Y -0.03 0.333 +0.03

GREEN X 0.308

Y 0.600

BLUE X 0.149

Y 0.059

WHITE X 0.279

Y 0.292

RED X Typ. 0.649 Typ. 55LV3500-UA (LGD)

Y -0.03 0.332 +0.03

GREEN X 0.307

Y 0.595

BLUE X 0.149

Y 0.059

WHITE X 0.279

Y 0.292

RED X Typ. 0.640 Typ. 55LV3500-UA (AUO)

Y -0.03 0.330 +0.03

GREEN X 0.300

Y 0.620

BLUE X 0.150

Y 0.050

WHITE X 0.280

Y 0.290

RED X Typ. 0.637 Typ. 37LV3500-UA (LGD)

Y -0.03 0.341 +0.03

GREEN X 0.319

Y 0.605

BLUE X 0.154

Y 0.051

WHITE X 0.279

Y 0.292

RED X Typ. 0.637 Typ. 32LV3500-UA (LGD)

Y -0.03 0.341 +0.03 32LV3520-UC (LGD)

GREEN X 0.320

Y 0.606

BLUE X 0.152

Y 0.055

WHITE X 0.279

Y 0.292

RED X Typ. 0.637 Typ. 42LV3500-UA (LGD)

Y -0.03 0.341 +0.03 42LV3520-UC (LGD)

GREEN X 0.325

Y 0.600

BLUE X 0.152

Y 0.051

WHITE X 0.279

Y 0.292

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Only for training and service purposes

No. Item Min Typ Max Unit Remarks

RED X Typ. 0.635 Typ. 32LV3500-UA (CMI)

Y -0.03 0.323 +0.03

GREEN X 0.288

Y 0.600

BLUE X 0.148

Y 0.050

WHITE X 0.280

Y 0.290

RED X Typ. TBD Typ. 32LV2500-UA (LGD)

Y -0.03 TBD +0.03

GREEN X TBD

Y TBD

BLUE X TBD

Y TBD

WHITE X 0.279

Y 0.292

RED X Typ. 0.640 Typ. 32LV2500-UA (AUO)

Y -0.03 0.330 +0.03

GREEN X 0.310

Y 0.620

BLUE X 0.150

Y 0.060

WHITE X 0.280

Y 0.290 4 Color coordinate uniformity N/A 5 Contrast ratio (Module) 3200 4000

32/37/42LV3500(20)-UA(C) (AUO) 4200 6000 42LV3500-UA (CMI) 1100 1600 55LV3500-UA (LGD) 2400 3000 32LV2500-UA (AUO) 3750 5000 32LV2500-UA (CMI) 1000 1400 47LV3500-UA (LGD) 3200 4000 55LV3500-UA (AUO) 1100 1600 37LV3500-UA (LGD) 2400 3000 32LV3500-UA (AUO) 1000 1400 32LV3500(20)-UA(C) (LGD) 1000 1400 42LV3500(20)-UA(C) (LGD)

Contrast ratio (DCR)

2,000,000:1 3,000,000:1

All

Global Dimming (Normal Dimming )

800,000:1

1,000,000:1

Only

32LV2500

6 Color COOL 0.254 0.269 0.284 13000K

** The W/B Tolerance is ±0.015 for

Temperature 0.258 0.273 0.288 picture quality by DQA.

MEDIUM 0.270 0.285 0.300 9300K

0.278 0.293 0.308

WARM 0.298 0.313 0.324 6500K

0.314 0.329 0.344

7 Response time 3 ms Only 55LV3500 N/A

6.5 32LV2500 AUO 6 9 32LV2500 LGD

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Only for training and service purposes

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

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

1. 720*480 15.73 60 13.5135 SDTV ,DVD 480I

2. 720*480 15.73 59.94 13.5 SDTV ,DVD 480I

3. 720*480 31.50 60 27.027 SDTV 480P

4. 720*480 31.47 59.94 27.0 SDTV 480P

5. 1280*720 45.00 60.00 74.25 HDTV 720P

6. 1280*720 44.96 59.94 74.176 HDTV 720P

7. 1920*1080 33.75 60.00 74.25 HDTV 1080I

8. 1920*1080 33.72 59.94 74.176 HDTV 1080I

9. 1920*1080 67.500 60 148.50 HDTV 1080P

10. 1920*1080 67.432 59.94 148.352 HDTV 1080P

11. 1920*1080 27.000 24.000 74.25 HDTV 1080P

12. 1920*1080 26.97 23.976 74.176 HDTV 1080P

13. 1920*1080 33.75 30.000 74.25 HDTV 1080P

14. 1920*1080 33.71 29.97 740176 HDTV 1080P

7. RGB Input (PC)

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

PC DDC

1. 640*350 31.468 70.09 25.17 EGA X

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 59.870 79.5 CVT(WXGA) X

7. 1360*768 47.712 60.015 85.50 VESA(WXGA) X

8. 1280*1024 63.981 60.020 108.00 Except LV2500 VESA(SXGA) O

9. 1600*1200 75.00 60.00 162 Except LV2500 VESA (UXGA) X

10. 1920*1080 66.587 59.934 148.5 Except LV2500 HDTV 1080P O

Only for training and service purposes

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8. HDMI input (PC/DTV)

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

PC DDC

1. 640*350 31.468 70.09 25.17 EGA X

2. 720*400 31.469 70.08 28.32 DOS O

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

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 59.870 79.5 CVT(WXGA) X

7. 1360*768 47.712 60.015 85.50 VESA (WXGA) O

8. 1280*1024 63.981 60.020 108.00 Except LV2500 VESA (SXGA) O

9. 1600*1200 75.00 60.00 162 Except LV2500 VESA (UXGA) X

10. 1920*1080 67.500 60.000 148.50 Except LV2500 HDTV 1080P O DTV

1 720*480 31.47 60 27.027 SDTV 480P O 2 720*480 31.47 59.94 27.00 SDTV 480P O 3 1280*720 45.00 60.00 74.25 HDTV 720P O 4 1280*720 44.96 59.94 74.176 HDTV 720P O 5 1920*1080 33.75 60.00 74.25 HDTV 1080I O 6 1920*1080 33.72 59.94 74.176 HDTV 1080I O 7 1920*1080 67.500 60 148.50 HDTV 1080P O 8 1920*1080 67.432 59.939 148.352 HDTV 1080P O

9 1920*1080 27.000 24.000 74.25 HDTV 1080P O 10 1920*1080 26.97 23.976 74.176 HDTV 1080P O 11 1920*1080 33.75 30.000 74.25 HDTV 1080P O 12 1920*1080 33.71 29.97 74.176 HDTV 1080P O

Only for training and service purposes

- 12 -

ADJUSTMENT INSTRUCTION

1. Application range

This spec. sheet applies to LA01U / LA01T / LA01S Chassis

applied LED LCD TV all models manufactured in TV factory.

2. Specification

2.1 Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument.

2.2 Adjustment must be done in the correct order.

2.3 The adjustment must be performed in the

circumstance of 25±5°C of temperature and 65±10% of relative humidity

2.4 The input voltage of the receiver must keep 100~240V~, 50/60Hz.

2.5 At first Worker must turn on the SET by using Power

Only key.

2.5 The receiver must be operated for about 5 minutes

prior to the adjustment when module is in the circumstance of over 15.

In case of keeping module is in the circumstance of 0°C, it should be placed in the circumstance of above 15°C for 2 hours

In case of keeping module is in the circumstance of below -20°C, it should be placed in the circumstance of above 15°C for 3 hours.

• Caution

When a still image is displayed for 20 minutes or longer (especially where W/B scale is strong. Digital pattern 13ch and/or Cross hatch pattern 09ch), there can some afterimage in the black level area.

3. Adjustment items

3.1 Board Level Adjustment

(1) ADC adjustment: Component 480i, 1080p / RGB-PC 1080p (2) EDID downloads for HDMI and RGB-PC

• Remark

- Above adjustment items can be also performed in Final Assembly if needed. Adjustment items in both PCBA and final assembly stages can be checked by using the INSTART Menu 1.ADJUST CHECK.

3.2 Final Assembly adjustment

(1) White Balance adjustment (2) RS-232C functionality check (3) Factory Option setting per destination (4) Shipment mode setting (IN-STOP)

3.3 Etc

(1) Ship-out mode (2) Service Option Default (3) USB Download(S/W Update, Option, Service only) (4) ISP Download (Optional)

4. Board Level Adjustment

4.1. ADC Adjustment

4.1.1. Overview

• ADC adjustment is needed to find the optimum black level and gain in Analog-to-Digital device and to compensate RGB deviation.

4.1.2. Equipment & Condition

1) Jig (RS-232C protocol)

2) Inner Pattern

- Resolution : 1080p (Inner Pattern)

- Resolution : 1024*768 RGB (Inner Pattern)

- Pattern : Horizontal 100% Color Bar Pattern

- Pattern level : 0.7±0.1 Vp-p

4.1.3. Adjustment

4.1.3.1 Adjustment method

• Using RS-232, adjust items listed in 3.1 in the other shown in “4.1.3.3”

4.1.3.2 Adj. protocol

Ref.) ADC Adj. RS232C Protocol_Ver1.0

4.1.3.3. Adj. order

• aa 00 00 [Enter ADC adj. mode]

• xb 00 40 [Change input source to Component1(1080i)]

• ad 00 10 [Adjust 480i Comp1]

• xb 00 60 [Change input source to RGB(1024*768)]

• ad 00 10 [Adjust 1024*768 RGB]

• ad 00 90 End adj.

Ref) ADC adj. RS232C Protocol_Ver1.0

Protocol Command Set ACK Enter adj. mode aa 00 00 a 00 OK00x Source change xb 00 40

xb 00 60

b 00 OK40x (Adjust 480i/1080p Comp1 ) b 00 OK60x (Adjust 1920*1080 RGB)

Begin adj. ad 00 10 Return adj. result OKx (Case of Success)

NGx (Case of Fail)

Read adj. data (main)

ad 00 20

(sub ) ad 00 21

(main) 000000000000000000000000007c007b006dx

(Sub) 000000070000000000000000007c00830077x

Confirm adj. ad 00 99 NG 03 00x (Fail)

NG 03 01x (Fail) NG 03 02x (Fail) OK 03 03x (Success)

End adj. aa 00 90 a 00 OK90x

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Only for training and service purposes

4.2. EDID/DDC Download

4.2.1 Overview

• It is a VESA regulation. A PC or a MNT will display an optimal resolution through information sharing without any necessity of user input. It is a realization of “Plug and Play”.

4.2.2 Equipment

• Since embedded EDID data is used, EDID download JIG, HDMI cable and D-sub cable are not need.

• Adjust remocon.

4.2.3 Download method

1) Press Adj. key on the Adj. R/C,

2) Select EDID D/L menu.

3) By pressing Enter key, EDID download will begin

4) If Download is successful, OK is display, but If Download is

failure, NG is displayed.

5) If Download is failure, Re-try downloads.

* Caution) When EDID Download, must remove RGB/HDMI

Cable.

4.2.4 EDID DATA

1) North America

# HDMI1-EDID (C/S : 03CC) EDID Block 0

Block1

# HDMI2-EDID (C/S : 03BC) Block0

Block1

# HDMI3-EDID (C/S : 03AC) Block0

Block1

# RGB-EDID (C/S : 1C) Block0

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 | 01 15 01 03 80 10 09 78 0A EE 91 A3 54 4C 99 26

20 | 0F 50 54 A1 08 00 81 80 61 40 45 40 31 40 01 01 30 | 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C 40 | 45 00 A0 5A 00 00 00 1E 01 1D 00 72 51 D0 1E 20 50 | 6E 28 55 00 A0 5A 00 00 00 1E 00 00 00 FD 00 39 60 | 3F 1F 52 10 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 03

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

_______________________________________________________

0 | 02 03 1C F1 47 10 22 20 05 84 03 02 23 09 07 07 10 | 67 03 0C 00 10 00 B8 2D E3 05 03 01 02 3A 80 18 20 | 71 38 2D 40 58 2C 04 05 A0 5A 00 00 00 1E 01 1D 30 | 80 18 71 1C 16 20 58 2C 25 00 A0 5A 00 00 00 9E 40 | 01 1D 00 72 51 D0 1E 20 6E 28 55 00 A0 5A 00 00

50 | 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 A0 5A

60 | 00 00 00 18 26 36 80 A0 70 38 1F 40 30 20 25 00 70 | A0 5A 00 00 00 1A 00 00 00 00 00 00 00 00 00 CC

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 | 01 15 01 03 80 10 09 78 0A EE 91 A3 54 4C 99 26

20 | 0F 50 54 A1 08 00 81 80 61 40 45 40 31 40 01 01

30 | 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C 40 | 45 00 A0 5A 00 00 00 1E 01 1D 00 72 51 D0 1E 20 50 | 6E 28 55 00 A0 5A 00 00 00 1E 00 00 00 FD 00 39

60 | 3F 1F 52 10 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 03

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

_______________________________________________________

0 | 02 03 1C F1 47 10 22 20 05 84 03 02 23 09 07 07 10 | 67 03 0C 00 20 00 B8 2D E3 05 03 01 02 3A 80 18 20 | 71 38 2D 40 58 2C 04 05 A0 5A 00 00 00 1E 01 1D 30 | 80 18 71 1C 16 20 58 2C 25 00 A0 5A 00 00 00 9E 40 | 01 1D 00 72 51 D0 1E 20 6E 28 55 00 A0 5A 00 00

50 | 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 A0 5A

60 | 00 00 00 18 26 36 80 A0 70 38 1F 40 30 20 25 00

70 | A0 5A 00 00 00 1A 00 00 00 00 00 00 00 00 00 BC

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 | 01 15 01 03 80 10 09 78 0A EE 91 A3 54 4C 99 26

20 | 0F 50 54 A1 08 00 81 80 61 40 45 40 31 40 01 01

30 | 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C 40 | 45 00 A0 5A 00 00 00 1E 01 1D 00 72 51 D0 1E 20 50 | 6E 28 55 00 A0 5A 00 00 00 1E 00 00 00 FD 00 39

60 | 3F 1F 52 10 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 03

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

_______________________________________________________

0 | 02 03 1C F1 47 10 22 20 05 84 03 02 23 09 07 07

10 | 67 03 0C 00 30 00 B8 2D E3 05 03 01 02 3A 80 18

20 | 71 38 2D 40 58 2C 04 05 A0 5A 00 00 00 1E 01 1D

30 | 80 18 71 1C 16 20 58 2C 25 00 A0 5A 00 00 00 9E 40 | 01 1D 00 72 51 D0 1E 20 6E 28 55 00 A0 5A 00 00 50 | 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 A0 5A

60 | 00 00 00 18 26 36 80 A0 70 38 1F 40 30 20 25 00

70 | A0 5A 00 00 00 1A 00 00 00 00 00 00 00 00 00 AC

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 | 01 15 01 03 68 10 09 78 0A EE 91 A3 54 4C 99 26

20 | 0F 50 54 A1 08 00 81 80 61 40 45 40 31 40 01 01

30 | 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C 40 | 45 00 A0 5A 00 00 00 1E 01 1D 00 72 51 D0 1E 20 50 | 6E 28 55 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A

60 | 3E 1E 53 10 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 1C

- 14 -

Only for training and service purposes

5. Final Assembly Adjustment

5.1. White Balance Adjustment

5.1.1. Overview

5.1.1.1. W/B adj. Objective & How-it-works (1) Objective: To reduce each Panel’s W/B deviation (2) How-it-works: When R/G/B gain in the OSD is at 192, it

means the panel is at its Full Dynamic Range. In order to prevent saturation of Full Dynamic range and data, one of R/G/B is fixed at 192, and the other two is lowered to find the desired value.

(3) Adj. condition: normal temperature

1) Surrounding Temperature: 25±5°C

2) Warm-up time: About 5 Min

3) Surrounding Humidity: 20% ~ 80%

5.1.2. Equipment (1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:

CH14)

(2) Adj. Computer (During auto adj., RS-232C protocol is

needed) (3) Adjust Remocon (4) Video Signal Generator MSPG-925F 720p/204-Gray

(Model: 217, Pattern: 49)

• Color Analyzer Matrix should be calibrated using CS-1000

5.1.3. Equipment connection

5.1.4. Adjustment Command (Protocol) (1) RS-232C Command used during auto-adj.

Ex) wb 00 00 -> Begin white balance auto-adj.

wb 00 10 -> Gain adj. ja 00 ff -> Adj. data jb 00 c0 ... ...

wb 00 1f -> Gain adj. complete

*(wb 00 20(start), wb 00 2f(end)) -> Off-set adj. wb 00 ff ->End white balance auto adj.

(2) Adj. Map Applied Model : 32/37/42/47/55LV3500-UA , 32/26/22/19LV2500-UA , 32/42/47LV3500-NA, 42/47LV4500-NA, 42/47/55LW4500-NA

5.1.5. Adjustment method

5.1.5.1 Auto WB calibration

1) Set TV in adj. mode using POWER ONLY (P-ONLY) key

2) Zero calibrate probe then place it on the center of the Display

3) Connect Cable(RS-232C)

4) Select mode in adj. Program and begin adj.

5) When adj. is complete (OK Sing), check adj. status pre mode (Cool, Medium, Warm)

6) Remove probe and RS-232C cable to complete adj.

• W/B Adj. must begin as start command “wb 00 00” , and

finish as end command “wb 00 ff”, and Adj. offset if need

5.1.5.2 Manual adj. method

1) Set TV in Adj. mode using POWER ON

2) Zero Calibrate the probe of Color Analyzer, then place it on the center of LCD module within 10cm of the surface..

3) Press ADJ key -> EZ adjust using adj. R/C 6. WhiteBalance then press the cursor to the right (KEY

G). (When

KEY(G) is pressed 204 Gray(80IRE) internal pattern will be displayed)

4) One of R Gain / G Gain / B Gain should be fixed at 192, and the rest will be lowered to meet the desired value.

5) Adj. is performed in COOL, MEDIUM, WARM 3 modes of color temperature.

• If internal pattern is not available, use RF input. In EZ Adj.

menu 6.White Balance, you can select one of 2 Test-pattern: ON, OFF. Default is inner(ON). By selecting OFF, you can adjust using RF signal in 204 Gray pattern.

Colo r Analyzer

Comp ut er

Pattern Ge n e r ator

RS-232C

Probe

Signal Source

* If TV internal pattern is used, not needed

Connection Diagram of Automatic Adjustment

RS-232C COMMAND

[CMD ID DATA]

Explanation

Wb 00 00 Begin White Balance adj. Wb 00 ff End White Balance adj. (internal pattern disappears )

Adj. item Command

(lower case ASCII)

Data Range (Hex.)

Default (Decimal)

CMD1 CMD2 MIN MAX

R Gain j g 00 C0 172 G Gain j h 00

i 00

C0 172 B Gain j C0 192 R Cut 64 G Cut 64

Cool

B Cut 64

Medium j a 00 C0 192

G Gain j b 00 C0 192 B Gain

R Gain

j c 00 C0 192 R Cut 64 G Cut 64 B Cut 64 R Gain j d 00 C0 192 G Gain j e 00 C0 192 B Gain j f 00 C0 172 R Cut 64 G Cut 64

Warm

B Cut 64

- 15 -

Only for training and service purposes

• Adj. condition and cautionary items

1) Lighting condition in surrounding area Surrounding lighting should be lower 10 lux. Try to isolate adj. area into dark surrounding.

2) Probe location : Color Analyzer (CA-210) probe should be

within 10cm and perpendicular of the module surface (80°~ 100°)

3) Aging time

- After Aging Start, Keep the Power ON status during 5

Minutes.

- In case of LCD, Back-light on should be checked using no

signal or Full-white pattern.

5.1.6 Reference (White Balance Adj. coordinate and color

temperature) (1) Luminance: 204 Gray, 80IRE (2) Standard color coordinate and temperature using CS-1000

(over 26 inch)

• Standard color coordinate and temperature using CA-

210(CH 9)

• Standard color coordinate and temperature using CA-

210(CH 14) – by aging time Edge LED models (applied only LGD Module)

5.2 HDCP (High-Bandwidth Digital Contents Protection) SETTING

5.3 Option selection per country

5.3.1 Overview

• Option selection is only done for models in Non-USA North America due to rating

• Applied model: LA01U Chassis applied None USA model(CANADA, MEXICO)

5.3.2 Method

(1) Press ADJ key on the Adj. R/C, and then select Country

Group Menu

(2) Depending on destination, select KR or US, then on the

lower Country option, select US, CA, MX. Selection is done using +, - KEY

5.4 Tool Option selection

• Method: Press Adj. key on the Adj. R/C, then select Tool option.

Mode Color Coordination Temp ∆UV

COOL 0.269 0.273 13000K 0.0000

MEDIUM 0.285 0.293 9300K 0.0000

WARM 0.313 0.329 6500K 0.0000

Mode Color Coordination Temp ∆UV

COOL 0.269±0.002 0.273±0.002 13000K 0.0000

MEDIUM 0.285±0.002 0.293±0.002 9300K 0.0000

WARM 0.313+0.002 0.329±0.002 6500K 0.0000

Cool Medium Warm

x y x y x y

GP2G

Aging time

(Min)

269 273 285 293 313 329 1 0-2 276 285 2 3-5 274 282 3 6-9 273 280 4 10-19 272 278 5 20-35 271 276 6 36-49 269 274 7 50-79 269 273 8 Over 80 269 273

292 305 315 334 290 302 313 332 289 300 312 330 288 298 311 328 287 296 310 326 286 294 309 324 286 293 308 323 285 293 308 323

Model Tool 1 Tool 2 Tool 3 Tool 4 Tool 5 Menu

32LV3500(20)-UA(B) 18280 19478 55337 2844 16738 AUO

37LV3500-UA 22376 19478 55338 2844 16738 AUO

42LV3500(20)-UA(B) 26472 19478 55338 2844 16736 AUO

42LV3500-UA 26468 19478 55337 2844 16425 CMI 47LV3500-UA 34656 19478 55337 2844 16640 LGD 55LV3500-UA 46944 19478 55338 2844 24832 LGD 32LV2500-UA 18213 18954 55332 2829 16425 CMI 32LV2500-UA 18216 19478 55337 2844 16738 AUO 42LV4500-NA 26406 19478 55337 2840 24576 LGD

47LV4500-NA 34688 19478 55337 2840 24576 LGD 42LW4500-NA 26528 19478 55337 2968 8192 LGD 47LW4500-NA 34720 19478 55337 2968 8192 LGD 55LW4500-NA 47008 19478 55337 2968 8192 LGD

47LV3500(1,20)-NA(B,C) 34656 19478 55337 2840 16384 LGD 42LV3500(1,20)-NA(B,C) 26464 19478 55337 2840 16416 LGD

32LV3500-NA 18272 19478 55337 2840 16418 LGD

26LV2500-UA 14120 18954 55338 2844 16640 AUO

22LV2500(20)-UA(C) 10024 18954 55337 2844 16640 AUO 19LV2500(20)-UA(C) 5928 18954 55337 2844 16640 AUO

37LV3500-UA 22368 19478 55337 2844 16674 LGD

55LV3500(1,20)-NA(B,C) 46944 19478 55337 2840 24576 LGD

32LV3500(20)-UA(B) 18272 19478 55339 2844 16418 LGD 42LV3500(20)-UA(B) 26464 19478 55339 2844 16672 LGD

32LV3500(1,20)-NA(B,C) 18288 19478 55337 2840 16416 IPS-A

42LV3400-NA 26592 9226 53289 2840 16416 LGD

32LV3400-NA 18400 9226 53289 2332 16418 LGD

32LV2500-UA 18208 19478 55337 2844 16674 LGD

26LV2500(20)-UA(C) 14112 18954 55337 2844 16640 LGD

- 16 -

Only for training and service purposes

6. GND and Hi-pot Test

6.1. Method

6.1.1. GND & HI-POT auto-check preparation (1) Check the POWER CABLE and SIGNAL CABE

insertion condition

6.1.2. GND & HI-POT auto-check

(1) Pallet moves in the station. (POWER CORD / AV CORD is tightly inserted) (2) Connect the AV JACK Tester. (3) Controller (GWS103-4) on. (4) GND Test (Auto)

- If Test is failed, Buzzer operates.

- If Test is passed, execute next process (Hi-pot test). (Remove A/V CORD from A/V JACK BOX)

(5) HI-POT test (Auto)

- If Test is failed, Buzzer operates.

- If Test is passed, GOOD Lamp on and move to next process automatically.

6.2. Checkpoint

• TEST voltage

- GND: 1.5KV/min at 100mA

- SIGNAL: 3KV/min at 100mA

• TEST time: 1 second

• TEST POINT

- GND TEST = POWER CORD GND & SIGNAL CABLE METAL GND

- Internal Pressure TEST = POWER CORD GND & LIVE & NEUTRAL

• LEAKAGE CURRENT: At 0.5mArms

7. EYE-Q Check

Step 1) Turn on the TV. Step 2) Press EYE button in adjust remote control. Step 3) Stay 6 seconds with Eye Q sensor hidden located on

the front of the set.

Step 4) Check the “Sensor Data” on the screen and check

whether the value is lower thanafter 6 seconds, the value does not go below 10, Eye Q sensor is not working properly. Then, change the sensor.

Step 5) Remove hand from the Eye Q II sensor and stay for 6

seconds.

Step 6) Check whether the “Back Light (xxx)” value has risen

on the screen. If after 6 seconds and the value still does not go high, the eye Q II sensor is not working properly. Replace the sensor.

- 17 -

Only for training and service purposes

8. USB S/W Download (Option, Service only)

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”

4. Updating is starting.

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.

* 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.)

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