LG LA51D, 37LC2D, 32LC2D Service Manual

LCD TV

SERVICE MANUAL

CAUTION

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

CHASSIS : LA51D FACTORY NAME : 32LC2D-UD/37LC2D-UD

MODEL : 32LC2D/37LC2D

website:http://biz.LGservice.com

e-mail:http://www.LGEservice.com/techsup.html

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CONTENTS

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

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

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

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

TROUBLE SHOOTING............................................................................15

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

WIRING DIAGRAM..................................................................................23

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

REPLACEMENT PARTS LIST ............................................................... 28

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

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SAFETY PRECAUTIONS

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

IMPORTANT SAFETY NOTICE

0.15uF

To Instrument's exposed METALLIC PARTS

AC Volt-meter

Good Earth Ground such as WATER PIPE, CONDUIT etc.

1.5 Kohm/10W

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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 circuitboard printed foil.

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

(500

F to 600 F)

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

the component lead until the solder melts.

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

component lead and the printed circuit foil, and hold it 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

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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.

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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. Receiving System ATSC/64 & 256 QAM/ NTSC-M

2. Available Channel 1) VHF : 02~13

2) UHF : 14~69

3) DTV : 02-69

4) CATV : 01~135

5) CADTV : 01~135

3. Input Voltage 1) AC 100 ~ 240V 50/60Hz DU-37LZ55 : 120V, 60Hz

4. Market NORTH AMERICA

5. Screen Size 32 inch Wide For 32LC2D 37 inch Wide

6. Aspect Ratio 16:9

7. Tuning System FS

8. LCD Module LC320W01-SL11 For 32LC2D LC370WX1-SL11 For 37LC2D

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

2) Humidity : ~ 80 %

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

2) Humidity : 0 ~ 90 %

1. Application range

1.1 This spec sheet is applied all of the 32/37" LCD TV with

LA51D chassis.

1.2 Not included spec and each product spec in this spec

sheet apply correspondingly to the following each country standard and requirement of Buyer

2. Specification

Each part is tested as below without special appointment.

2.1 Temperature : 20±5°C

2.2 Relative Humidity : 65±10%

2.3 Power Voltage : Standard input voltage

(110~240V@50/60Hz)

* Standard Voltage of each product 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 20 minutes prior

to the adjustment.

3. Test method

3.1 Performance : LGE TV test method followed

3.2 Demanded other specification Safety : UL, CSA, IEC specification EMC : FCC, ICES, IEC specification

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5. Chroma & Brightness

5.1 FOR 32LC2D-UD CONDITION : EZ-Picture "Normal"

No Item Min Typ Max Unit Remark

1. White peak brightness 400 500 cd/m

HDMI input, full white

2. Contrast Ratio 600:1 800:1

3. Brightness uniformity 1.3 Refer to LCD SPEC.

4. Color coordinate RED X 0.640 +/- 0.03 Y 0.341 +/- 0.03

GREEN X 0.287 +/- 0.03

Y 0.610 +/- 0.03

BLUE X 0.146 +/- 0.03

Y 0.069 +/- 0.03

WHITE X 0.285 +/- 0.03

Y 0.293 +/- 0.03

5. Viewing angle 176 R/L, U/D

6. Color Temperature Standard 8,300 9,300 10,300 <Test Signal>

Cool 11,000 12,000 13,000 HDMI input, With 16-gray

Warm 5,500 6,500 7,500 pattern, 6th bar from right

7. Color Distortion, DG %

8. Color Distortion, DP deg

9. Color S/N, AM/FM dB

No Item Min Typ Max Unit Remark

1. White peak brightness 400 500 600 cd/m

HDMI input, full white

2. Contrast Ratio 600:1 800:1

3. Brightness uniformity 1.3 Refer to LCD SPEC.

4. Color coordinate RED X 0.640 +/- 0.03 Y 0.341 +/- 0.03

GREEN X 0.287 +/- 0.03

Y 0.610 +/- 0.03

BLUE X 0.146 +/- 0.03

Y 0.069 +/- 0.03

WHITE X 0.285 +/- 0.03

Y 0.293 +/- 0.03

5. Viewing angle 176 R/L, U/D

6. Color Temperature Standard 8,300 9,300 10,300 <Test Signal>

Cool 11,000 12,000 13,000 HDMI input, With 16-gray

Warm 5,500 6,500 7,500 pattern, 6th bar from right

7. Color Distortion, DG %

8. Color Distortion, DP deg

9. Color S/N, AM/FM dB

5.2 FOR 37LC2D-UD

CONDITION : EZ-Picture "Normal"

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

Specification

Proposed

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

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

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

3. 720*480 31.50 60 SDTV 480P

4. 720*480 31.47 59.94 SDTV 480P

5. 1280*720 45.00 60.00 HDTV 720P

6. 1280*720 44.96 59.94 HDTV 720P

7. 1920*1080 33.75 60.00 HDTV 1080I

8. 1920*1080 33.72 59.94 HDTV 1080I

7. RGB Iinput (PC/DTV)

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

PC 1 720*400 31.469 70.08 28.32 DOS O 2 640*480 31.469 59.94 25.17 VESA(VGA) O 3 640*480 37.861 72.80 31.50 VESA(VGA) O 4 640*480 37.500 75.00 31.50 VESA(VGA) O 5 800*600 35.156 56.25 36.00 VESA(SVGA) O 6 800*600 37.879 60.31 40.00 VESA(SVGA) O 7 800*600 48.077 72.18 50.00 VESA(SVGA) O 8 800*600 46.875 75.00 49.50 VESA(SVGA) O 9 1024*768 48.363 60.00 65.00 VESA(XGA) O

10 1024*768 56.476 70.06 75.00 VESA(XGA) O 11 1024*768 60.023 75.02 78.75 VESA(XGA) O

DTV

1. 720*480 31.47 59.94 SDTV 480P

2. 720*480 31.50 60 SDTV 480P

3. 1280*720 45.00 60.00 HDTV 720P

4. 1280*720 44.96 59.94 HDTV 720P

5. 1920*1080 33.75 60.00 HDTV 1080I

6. 1920*1080 33.72 59.94 HDTV 1080I

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

PC DDC

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

2. 640*480 37.861 72.80 31.50 VESA(VGA) O

3. 640*480 37.500 75.00 31.50 VESA(VGA) O

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

5. 800*600 37.879 60.31 40.00 VESA(SVGA) O

6. 800*600 48.077 72.18 50.00 VESA(SVGA) O

7. 800*600 46.875 75.00 49.50 VESA(SVGA) O

8. 1024*768 48.363 60.00 65.00 VESA(XGA) O

9. 1024*768 56.476 70.06 75.00 VESA(XGA) O

10. 1024*768 60.023 75.02 78.75 O

DTV

11. 720*480 31.500 60 27.03 SDTV 480P

12. 720*480 31.469 59.94 27.00 SDTV 480P

13. 1280*720 45.00 60.00 HDTV 720P

14. 1280*720 44.96 59.94 HDTV 720P

15. 1920*1080 33.75 60.00 HDTV 1080I

16. 1920*1080 33.72 59.94 HDTV 1080I

8. HDMI Input (PC/DTV)

9. Mechanical specification

<32LC2D>

<37LC2D>

No, Item Content Remark

1 Product Dimenson Width(W) Length(D) Height(H)

Before Packing 944 286 726 With Stand After Packing 1052 383 855

2 Product Weight Only SET 31Kg With Stand

With Box 33.3Kg

No, Item Content Remark

1 Product Dimenson Width(W) Length(D) Height(H)

Before Packing 811 235 630 With Stand After Packing 896 300 720

2 Product Weight Only SET 22Kg With Stand

With Box 25.5Kg

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ADJUSTMENT INSTRUCTION

1. Application Object

These instructions are applied to all of the LCD TV, AF-05FD.

2. Notes

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

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

there is no specific designation. (4) The input voltage of the receiver be must kept 110V, 60Hz

during adjustment. (5) The receiver must be operational for about 15 minutes

prior to the adjustments.

1) After receiving 100% white pattern, the receiver must be operated 15 minutes prior to adjustment. (or 8. White Pattern condition in EZ - Adjust)

2) Enter into White Pattern

- Pressing POWER ON Key on Service Remote Control

(S R/C)

- Enter the Ez - Adjust by pressing ADJ Key on Service

Remote Control (S R/C).

- Select the 8. White Pattern using CH +/- Key and

press the Enter(Y) Key. Display the 100% Full White Pattern.

[The set will display white screen without a signal

generator in this mode.]

If you turn on a still screen more than 20 minutes (Especially Digital pattern, Cross Hatch Pattern), an afterimage may occur in the black level part of the screen.

3. EPLD Download

(1) Test Equipment : PC, Jig for download (2) Connect the power of VSC B/D. (3) Execute download program(iMPACK) of PC. (4) After executing the hot key on the Programmer, click icon (5) End after confirming

4. EDID(The Extended Display

Identification Data)/DDC (Display Data Channel) download

This is the function that enables “Plug and Play".

4-1. HDMI EDID Data Input

(1) Required Test Equipment

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

2) S/W for writing DDC(EDID data write & read)

3) D-Sub cable

4) Jig for HDMI Cable connection

(2) Preparation for Adjustments &

Setting of Device

1) Set devices as below and turn on the PC and JIG.

2) Open S/W for writing DDC (EDID data write & read). (operated in DOS mode)

4-2. EDID DATA for LA51D

[32LC2D] EDID for HDMI 1 (DDC (Display Data Channel) Data) EDID table =

VSC

B/D

<Fig 1> Connection Diagram of EPLD Download

<Fig. 2>

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 00 0E 01 03 80 52 2E 78 0A D4 6C A3 57 49 9C 25 20 11 48 4B 4F CE 00 31 4F 45 4F 61 4F 01 01 01 01 30 01 01 01 01 01 01 64 19 00 40 41 00 26 30 18 88 40 36 00 BA 88 21 00 00 18 00 00 00 FD 00 38 4B 1E 50 3D 08 00 0A 20 20 20 20 20 20 00 00 00 FC 00 33 60 32 4C 43 32 44 2D 55 44 0A 20 20 20 00 00 00 00 70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 D3

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00 02 03 13 F1 44 84 05 03 02 23 15 07 50 65 03 0C 10 00 10 00 01 1D 00 72 51 D0 1E 20 DC 28 45 04 BA 20 88 21 00 00 1E 01 1D 80 18 71 1C 16 20 94 2C F5 30 00 BA 88 21 00 00 1E 8C 0A D0 8A 20 E0 2D 10 3C 40 3E E6 04 BA 88 21 00 00 18 8C 0A D0 8A 20 E0 2D 50 10 3C 3E E6 04 BA 88 21 00 00 18 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 8E

PDP TV SET

(or Digital Board)

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EDID DATA for RGB EDID table =

[37LC2D] EDID for HDMI 1 (DDC (Display Data Channel) Data) EDID table =

EDID DATA for RGB EDID table =

5. MST9883-Set Adjustment

5-1. Synopsis

MST9883-Set adjustment to set the black level and the Gain of optimum with an automatic movement from the analog => digital converter.

5-2. Test Equipment

Service R/C, MSPG925FA Pattern Generator(720P The Horizontal 100% Color Bar Pattern output will be possible and the output level will accurately have to be adjusted to

0.7±0.1Vp-p)

5-3. Adjustment

(1) Select Component1 or Component2 as the input with

100% Horizontal Color Bar Pattern(HozTV31Bar) in 720p Mode and select ‘Normal’ on screen.

(2) After receiving signal for at least 1 second, press the ADJ

Key on the Service R/C to enter the ‘Ez - Adjust’ and select the ‘2. MST9883-Set’. Pressing the Enter Key to adjust with automatic movement.

(3) When the adjustment is over, 'MST9883 Component

Success’ is displayed. If the adjustment has errors, 'MST9883 Configuration Error’ is displayed.

(4) After the Component MST9883 adjustment is over, convert

the RGB-DTV Mode and display Pattern. When the adjustment is over, 'MST9883 RGB_DTV Success’ is displayed. If the adjustment has errors, 'MST9883 Configuration Error’ is displayed.

(5) Readjust after confirming the case Pattern or adjustment

condition where the adjustment had errors.

(6) After adjustment is complete, exit the adjustment mode by

pressing the ADJ KEY.

<Fig. 3> Adjustment Pattern : 720P/60Hz HozTV31Bar Pattern

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00 00 FF FF FF FF FF FF 00 1E 6D 5D 46 01 01 01 01 10 07 0F 01 03 68 46 28 96 0A D4 6C A3 57 49 9C 25 20 11 48 4B AF CE 00 31 4F 45 4F 61 4F 01 01 01 01 30 01 01 01 01 01 01 64 19 00 40 41 00 26 30 18 88 40 36 00 BC 88 21 00 00 18 00 00 00 FD 00 38 4B 1E 50 3D 08 00 0A 20 20 20 20 20 20 00 00 00 FC 00 33 60 32 4C 43 32 44 2D 55 44 0A 20 20 20 00 00 00 00 70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 34

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00 00 FF FF FF FF FF FF 00 1E 6D 5D 46 01 01 01 01 10 07 0F 01 03 68 46 28 96 0A D4 6C A3 57 49 9C 25 20 11 48 4B AF CE 00 31 4F 45 4F 61 4F 01 01 01 01 30 01 01 01 01 01 01 64 19 00 40 41 00 26 30 18 88 40 36 00 BC 88 21 00 00 18 00 00 00 FD 00 38 4B 1E 50 3D 08 00 0A 20 20 20 20 20 20 00 00 00 FC 00 33 60 37 4C 43 32 44 2D 55 44 0A 20 20 20 00 00 00 00 70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 34

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 00 0E 01 03 80 52 2E 78 0A D4 6C A3 57 49 9C 25 20 11 48 4B 4F CE 00 31 4F 45 4F 61 4F 01 01 01 01 30 01 01 01 01 01 01 64 19 00 40 41 00 26 30 18 88 40 36 00 BA 88 21 00 00 18 00 00 00 FD 00 38 4B 1E 50 3D 08 00 0A 20 20 20 20 20 20 00 00 00 FC 00 33 60 37 4C 43 32 44 2D 55 44 0A 20 20 20 00 00 00 00 70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 D3

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6. Adjustment of White Balance

6-1. Required Equipment

(1) Color analyzer (CA-110, CA-210 or similar product) (2) Automatic adjustor (with automatic adjustment hour

necessity and the RS-232C communication being possible)

(3) Pattern Generator(MSPG-925FA): DVI Output

[ RS-232C Command (Automatic Adjustment)

6-2. Adjustment of White Balance

Operate the Zero-calibration of the CA-210, then attach sensor to module surface when you adjust.

Manual adjustment is also possible by the following sequence.

(1) Enter ‘Ez - Adjust’ by pressing ADJ KEY on the Service

Remote Control.

(2) Select "8. WHITE PATTERN" using CH +/- Key and HEAT

RUN at least 30 minutes by pressing the ENTER Key.

(3) Receive the Window pattern signal from Digital Pattern

Generator. (AV Input: connect the ‘HDMI’)

(4) After attaching sensor to center of screen, select ‘5. White-

Balance’ of ‘Ez - Adjust’ by pressing the ADJ KEY on the Service R/C. Then enter adjustment mode by pressing the Right KEY (

) .

(5) Adjust the Hight Light using R Gain/G Gain(Cool).

Adjust the Hight Light using G Gain/B Gain(Medium). Adjust the Hight Light using G Gain/B Gain(Warm).

(6) Adjust using Volume +/- KEY.

After adjustment is complete, exit the adjustment mode by pressing the ADJ KEY.

High Level: 216gray

[Cool]

X; 0.274±0.002 Y; 0.275±0.002 Color temperature: 12000°K±1000°K

[Medium]

X; 0.287±0.002 Y; 0.289±0.002 Color temperature: 9300°K±1000°K

[Warm]

X; 0.315±0.002 Y; 0.316±0.002 Color temperature: 6500°K±1000°K

7. Video(uPD)

7-1. Required Equipment

MSPG925FA Pattern Generator-connector with Video Input

7-2. MSG925FA Adjustment

(1) After select the model, input the #201(NTSC-M). (2) Receive the 100% Color Bar Pattern.(Pattern #33) (3) Select the Reverse button and select the signal as below

figure.

7-3. Adjustment

(1) After receive signal to Ant input, CVBS output of

MSPG925FA to Video and confirm the signal receiving.

(2) Enter the ‘EZ-ADJUST’ by pressing the ADJ Key on the

Service R/C.

(3) Select ‘3. Video(uPD)-Set’ and enter the adjustment mode

by pressing the right key(

(4) When enter the adjustment mode, displayed the TV 2CH

Screen automatic at picture and appear as below figure.

(5) When the automatic adjustment is over, 'RF Configuration

Success’ is displayed. If the adjustment has errors, 'Video Configuration Error’ is displayed.

(6) After the RF signal automatic adjustment is over, convert

the Video Mode as below figure and adjust with automatic movement the Video Mode. When the automatic adjustment is over, 'Video Configuration Success’ is displayed. If the adjustment has errors, 'Video Configuration Error’ is displayed.

R Gain G Gain B Gain

R Cut

G Cut

B Cut

Jg Jh

Cool

Ja Jb Jc

Med

RS-232C COMMAND CENTER(DEFAULT)

Jd Je

00 00 00

ff ff

ff 7f 7f 7f

Warm

Min Max

AE BB C0

70 67 64

Cool

B6 B2 9A 64 64 64

Med

C0 A5 5E

64 64 64

Warm

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8. Shipping Conditions

No Item Condition Remark

1 Input Mode TV02CH 2 Volume Level 30 3 Mute Off 4 Aspect Ratio 16:9

5. Video EZ Picture Daylight Contrast 100 Brightness 40 Color 70 Sharpness 70 Tint 0 Color-temperature Cool

6. Audio Audio Language Off EZ SoundRite Off EZ Sound Normal Balance 0 Treble 50 Bass 50 Front Surround Off TV Speaker On BBE Off

7. Timer Auto clock On Manual Clock Off Off Timer Off On Timer Off Sleep Timer Off Auto Off Off

8. Option Aspect Ratio 16:9 Cinema 3:2 mode Off Caption Off Caption/Text CC1 Caption Option Off Language English

9. Lock Lock System Off Set password On (Default:0000 ) Block channel None Movie Rating Off TV Rating-Children None TV Rating-General None Input Block Off

10. Channel Memory RF : 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 30, 51, 63 CATV : 15, 16, 17

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SVC REMOCON

1 POWER 2 POWER ON 3 MUTE

4 P-CHECK 5 S-CHECK 6 ARC 7 CAPTION 8 TXT 9 TV/AV 10 TURBO SOUND 11 TURBO PICTURE

12 IN-START

13 ADJ 14 MPX 15 EXIT 16 APC(PSM) 17 ASC(SSM) 18 MULTIMIDIA 19 FRONT-AV 20 CH 21 VOL 22 ENTER

23 PIP CH-(OP1)

24 PIP CH+(OP2)

25 PIP SWAP(OP3)

26 PIP INPUT(OP4)

27 EYE 28 MENU

29 IN-STOP 30 STILL

31 TIME

32 SIZE

33 MULTI PIP

34 POSITION

35 MODE 36 PIP 37 TILT 38 0~9

To turn the TV on or off To turn the TV on automatically if the power is supplied to the TV. (Use the POWER key to deactivate): It should be deactivated when delivered. To activate the mute function. To check TV screen image easily. To check TV screen sound easily To select size of the main screen (Normal, Spectacle, Wide or Zoom) Switch to closed caption broadcasting To toggle on/off the teletext mode To select an external input for the TV screen To start turbo sound To start turbo picture To enter adjustment mode when manufacturing the TV sets. To adjust the screen voltage (automatic): In-start

mute Adjust AV(Enter into W/B adjustment mode) W/B adjustment (automatic): After adjusting the screen W/B adjustment Exit two times (Adjustment completed) To enter into the adjustment mode. To adjust horizontal line and sub-brightness. To select the multiple sound mode (Mono, Stereo or Foreign language) To release the adjustment mode To easily adjust the screen according to surrounding brightness To easily adjust sound according to the program type To check component input To check the front AV To move channel up/down or to select a function displayed on the screen. To adjust the volume or accurately control a specific function. To set a specific function or complete setting. To move the channel down in the PIP screen. To use as a red key in the teletext mode To move the channel in the PIP screen To use as a green key in the teletext mode To switch between the main and sub screens To use as a yellow key in the teletext mode To select the input status in the PIP screen To use as a blue key in the teletext mode To set a function that will automatically adjust screen status to match the surrounding brightness so natural color can be displayed. To select the functions such as video, voice, function or channel. To set the delivery condition status after manufacturing the TV set. To halt the main screen in the normal mode, or the sub screen at the PIP screen. Used as a hold key in the teletext mode (Page updating is stopped.) Displays the teletext time in the normal mode Enables to select the sub code in the teletext mode Used as the size key in the PIP screen in the normal mode Used as the size key in the teletext mode Used as the index key in the teletext mode (Top index will be displayed if it is the top text.) To select the position of the PIP screen in the normal mode Used as the update key in the teletext mode (Text will be displayed if the current page is updated.) Used as Mode in the teletext mode To select the simultaneous screen To adjust screen tilt To manually select the channel.

Shortcut keys Shortcut keys Shortcut keys

Use the AV key to enter the screen W/B adjustment mode.

Shortcut keys Shortcut keys

Shortcut keys

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TROUBLESHOOTING

1. Power Board

1-1. General Power Flow

Start check

Manufacture enterprise

meaning of a passage

1. Check the Power Off condition.

Doesn't the

screen whole come

out?

It is identical

with Power Off

condition?

Yes

2. Check the Interface signal condition.

Is the Interface

signal operated?

Yes

3. Check the 5VST signal circuit.

Doesn't the

low pressure output

come out?

Doesn't the

St-by 5V signal

come out?

Yes

4. Check the 5V-MNT signal circuit.

Doesn't the

5V Monitor signal

come out?

Yes

7. Check the VSC Vs-ON signal

Doesn't the

high tension output

come out?

Doesn't the

VSC signal Vs-ON

come out?

Yes

8. Check the Vs, Va

voltage output circuit.

Doesn't the

Vs, Va voltage output

come out?

Yes

5. Check the VSC RL-ON signal.

Doesn't the

VSC signal RL-ON

come out?

Yes

6. Check the VSC low pressure output

Doesn't the

VSC low pressure

output come out?

Yes

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2. No Power

(1) Symptom

ﬂ Does’t minute discharge at module. ﬂ No front LED.

(2) Check follow

Power cord connected? Plug in power cord.

Yes

Cable connecting the Line Filter

and Power Board connected?

Connect Cable.

Yes

Is Fuse(F101) on Power Board

good?

Replace Fuse.

Yes

Is the Power Board connected to

7P of VSC Board?

Connect Cable.

Yes

When ST-BY 5V does not operate,

replace Power Board.

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3. Abnormal Display

3-1. Does’t display the OSD

(1) Symptom

ﬂ LED is green ﬂ The minute discharge continuously becomes

accomplished from module

(2) Check follow

Check the LVDS

cable?

Is the VSC Digital

Board good?

Is the LVDS cable

connected well?

Reset cable.

Yes

Operates the Thine

IC(IC100)?

Replace Thine

IC(IC100).

Is the T-Con Board

good?

Replace T-Con B/D.

Check

IEP(IC902)?

Replace

IEP(IC902).

Yes

Check

Scaler(IC400)?

Replace

VSC Digital

B/D.

Replace

Scaler(IC400).

Yes Yes

Replace cable.

Yes

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3-2. In case of does’t display the screen into specific mode

(1) Symptom

ﬂ The screen does not become the display from specific input mode

(RF, AV, Component, RGB, DVI).

(2) Check follow

ﬂ Check the all input mode should become normality display

(3) Abnormal display in RF mode

(4) Abnormal display in AV mode

Is the Tuner normal?

Is IC103 (Switch)

CXA2069Q good?

Is the Tuner Cable

connected well?

Reset cable.

Yes

Is the Video Decoder

IC302 UPD64011

good?

Replace Tuner

Are the Input voltage, IIC Comm.

and CVBS outputs good?

Yes

Are the Input voltage, IIC

Comm. and HV sync good?

Replace IC103

Are the Input voltage, IIC

Comm. and HV sync good?

Replace IC302

Is IC103 (Switch)

CXA2069Q good?

Yes

Is the Video Decoder

IC302 UPD64011

good?

Is normal the Input voltage, IIC Communication and HV sync?

Replace IC103

Are the Input voltage, IIC

Comm. and HV sync good?

Replace IC302

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