LG 19LS4D-ZB Schematic

LCD TV

SERVICE MANUAL

CAUTION

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

CHASSIS : LD73B

MODEL : 19LS4D 19LS4D-ZB

website:http://biz.LGservice.com

Internal Use Only

Only for training and service purposes

- 2 -

CONTENTS

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

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

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

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

TROUBLE SHOOTING ............................................................................14

BLOCK DIAGRAM...................................................................................21

EXPLODED VIEW .................................................................................. 22

REPLACEMENT PARTS LIST ............................................................... 24

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 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

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

- 4 -

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

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SPECIFICATION

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

1. General Specification(TV)

No Item Specification Remark

1. Video input applicable system PAL-D/K, B/G, I, SECAM

2. Receivable Broadcasting System 1) PAL/SECAM BG EU(PAL Market)

2) PAL/SECAM DK

3) SECAM L/L'

4) DVB-T

3. RF Input Channel VHF : E2 ~ E12 PAL

UHF : E21 ~ E69

CATV : S1 ~ S20

HYPER : S21~ S47

4. Input Voltage 100-240V~ / 50Hz, 60Hz

5. Market EU

6. Picture Size 19 inch

7. Tuning System FVS 100 program PAL, 200 PR.(Option)

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

2) Humidity : 10~90 %

9. Storage Environment 3) Temp : -20 ~ 50 deg

4) Humidity : 10~90 %

10. Display LCD Module LPL

2. General Specification(LCD Module)

No Item Specification Remark

1 Panel 19” TFT WXGA LCD

2 Frequency range H : 45.771 ~ 72.553 kHz

V : 50 ~ 75Hz

3 Power consumption 24.6 W

4 LCD Module- LPL Type Size 427.2 x 277.4 x 15.3

(mm)

(H)x(V)x(D)

Pixel Pitch 0.285 x 0.285 (mm)

Pixel Format 1440 horiz. By 900 vert. Pixels

RGB strip arrangement

Coating Hard coating (3H), Anti-glare (Haze

25%) treatment of the front polarizer,

Back Light 4 CCFL

Only for training and service purposes

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3. Optical Feature

4. Component Video Input (Y, P

B, PR)

No Item Specification Min. Typ. Max. Remark

1 Viewing Angle [CR>10] R/L, U/D 140, 130

2 Luminance Luminance(cd/m

) 190 250

Variation 75% Min/Max

3 Contrast Ratio CR 400 700 All White/All Black

4 CIE Color Coordinates White Wx Typ 0.313 Typ

Wy -0.03 0.329 +0.03

Red Xr 0.635

Yr 0.342

Green Xg 0.292

Yg 0.611

Blue Xb 0.147

Yb 0.070

Specification

Proposed

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

1. 720X480 15.73 60.00 SDTV, DVD 480i

2. 720X480 15.63 59.94 SDTV, DVD 480i

3. 720X480 31.47 59.94 480p

4. 720X480 31.50 60.00 480p

5. 720X576 15.625 50.00 SDTV, DVD 625 Line

6. 720X576 31.25 50.00 HDTV 576p

7. 1280X720 45.00 50.00 HDTV 720p

8. 1280X720 44.96 59.94 HDTV 720p

9. 1280X720 45.00 60.00 HDTV 720p

10. 1920X1080 31.25 50.00 HDTV 1080i

11. 1920X1080 33.75 60.00 HDTV 1080i

12. 1920X1080 33.72 59.94 HDTV 1080i

13. 1920X1080 67.50 60.00 HDTV 1080p

Only for training and service purposes

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6. RGB PC INPUT Mode Table

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

1. 720X400 31.468 70.08 28.321

2. 640X480 31.469 59.94 25.17 VESA

37.684 75.00 31.50

3. 800X600 37.879 60.31 40.00 VESA

46.875 75.00 49.50

4. 832X624 49.725 74.55 57.283 Macintosh

5. 1024X768 48.363 60.00 65.00 VESA(XGA)

56.470 70.00 75.00

60.123 75.029 78.75

6. 1280X768 47.693 59.99 80.125 VESA(WXGA)

7. 1360X768 47.649 59.94 84.625 VESA(WXGA)

8. 1366X768 47.649 59.94 84.625 Supported

9. 1280X1024 63.981 60.020 108.00 VESA(SXGA)

10 1440X900 55.469 59.901 88.750 CVT Red. Blanking

11. 1440X900 55.935 59.887 106.5 CVT

12. 1400X1050 64.744 59.948 101.00 CVT Red. Blanking

13. 1400X1050 65.317 59.978 121.750 CVT

14. 1680X1050 64.674 59.883 119.00 CVT Red. Blanking

15. 1680X1050 65.290 59.954 146.25 CVT

16. 1920X1080 66.647 59.988 138.625 WUXGA

7. HDMI DTV Table

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

1. 720X480 31.47 59.94 27.00 SDTV 480p 60Hz(4:3)

2. 720X480 31.50 60 27.027 SDTV 480p 60Hz(4:3)

3. 640X480 31.50 59.94 25.175 SDTV 480p 60Hz(4:3)

4. 640X480 31.50 60 25.20 SDTV 480p 60Hz(4:3)

5. 720X480 31.47 59.94 27.00 SDTV 480p 60Hz(16:9)

6. 720X480 31.47 60 27.027 SDTV 480p 60Hz(16:9)

7. 720X576 31.25 50.00 27.000 SDTV 576p 50Hz

8. 1280X720 45.00 50.00 74.176 HDTV 720p 50Hz HDCP

9. 1280X720 44.96 59.94 74.176 HDTV 720p 60Hz HDCP

10. 1280X720 44.96 60 74.250 HDTV 720p 60Hz HDCP

11. 1920X1080 28.13 50.00 74.250 HDTV 1080i 50Hz HDCP

12. 1920X1080 33.72 59.94 74.176 HDTV 1080i 60Hz HDCP

13. 1920X1080 33.75 60 74.250 HDTV 1080i 60Hz HDCP

14. 1920X1080 27 24 74.250 HDTV 1080P 24Hz HDCP

15. 1920X1080 56.25 50.00 148.500 HDTV 1080P 50Hz HDCP

16. 1920X1080 67.43 59.94 148.352 HDTV 1080P 60Hz HDCP

17. 1920X1080 67.50 60 148.500 HDTV 1080P 60Hz HDCP

Only for training and service purposes

- 9 -

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

1. 720X400 31.468 70.08 28.321

2. 640X480 31.469 59.94 25.17 VESA

37.500 75.00 31.50

3. 800X600 37.879 60.31 40.00 VESA

46.875 75.00 49.50

4. 832X624 49.725 74.55 57.283

5. 1024X768 48.363 60.00 65.00 VESA(XGA)

56.476 70.00 75.00

60.023 75.03 78.75

6. 1280X768 47.693 59.99 80.125 VESA(WXGA)

7. 1360X768 47.649 59.94 84.625 VESA(WXGA)

8. 1366X768 47.649 59.94 84.625 Supported

9. 1280X1024 63.981 60.020 108.00 VESA(SXGA)

10 1440X900 55.469 59.901 88.750 CVT Red. Blanking

11. 1440X900 55.935 59.887 106.5 CVT

12. 1400X1050 64.744 59.948 101.00 CVT Red. Blanking

13. 1400X1050 65.317 59.978 121.750 CVT

14. 1680X1050 64.674 59.883 119.00 CVT Red. Blanking

15. 1680X1050 65.290 59.954 146.25 CVT

16. 1920X1080 66.647 59.988 138.625 WUXGA

8. HDMI PC Table

Only for training and service purposes

- 10 -

ADJUSTMENT INSTRUCTION

1. Application Range

This spec. sheet is applied to all of the LD73B chassis manufactured at LG TV Plant all over the world.

2. Specification.

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 to protect test instruments

2) Adjustment must be done in the correct sequence.

3) The adjustment must be performed at 25±5°C temperature and 65±10% relative humidity if there is no specified designation.

4) The input voltage of the receiver must be kept between 100-220V~, 50/60Hz.

5) Before adjustment, execute Heat-Run for 30 minutes at RF no signal.

3. Channel Memory

3.1. Setting up the LGIDS

1) Press ADJ key in Adjust remote control.

2) Select “Channel Recover” by using

D/E (CH+/-) key, and

press

G (VOL+).

3) When Channel Recover is completed, set will be turned off and LED light go to stand-by mode.

4. EDID

* Caution

1) Use the proper signal cable for EDID Download

- Analog EDID : Pin3 exists

- Digital EDID : Pin3 exists

2) Never connect HDMI & D-sub Cable at the same time.

3) Use the proper cables below for EDID Writing.

4.1. EDID Data

4.2. Data

(1) ANALOG (128 bytes)

(2) HDMI 1 (256 bytes)=>

=> Detail EDID Options are below (a, b, c, d, e-1, e-2)

(a) Product ID (b) Serial No: Controlled on production line. (c) Month, Year: Controlled on production line:

ex) Monthly : ‘09’ -> ‘09’

Year : ‘2006’ -> ‘10’ (d) Model Name(Hex): (e-1, e-2, f) Checksum: Changeable by total EDID data.

D-sub to D-sub DVI-D to HDMI or HDMI or HDMI

For HDMI EDIDFor Analog EDID

Item

Manufacturer ID

Version

Revision

Condition

GSM

Digital : 1

Digital : 3

Data(Hex)

1E6D

0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F

0x00 00 FF FF FF FF FF FF 00 1E 6D (a) (b)

0x01 (c) 01 03 08 2F 1E 78 0A AE C5 A2 57 4A 9C 25

0x02 12 50 54 A5 6E 00 81 80 95 00 D1 C0 01 01 01 01

0x03 01 01 01 01 01 01 7C 2E 90 A0 60 1A 1E 40 30 20

0x04 36 00 D9 28 11 00 00 1C 21 39 90 30 62 1A 27 40

0x05 68 B0 36 00 D9 28 11 00 00 1C 00 00 00 FD 00 38

0x06 4B 1C 53 0F 00 0A 20 20 20 20 20 20 00 00 00 FC

0x07 00 32 32 4C 53 34 44 2D 5A 42 0A 20 20 20 00 (e-2)

0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F

0x00 00 FF FF FF FF FF FF 00 1E 6D (a) (b)

0x01 (c) 01 03 80 2F 1E 78 0A AE C5 A2 57 4A 9C 25

0x02 12 50 54 A5 6E 00 81 80 95 00 D1 C0 01 01 01 01

0x03 01 01 01 01 01 01 7C 2E 90 A0 60 1A 1E 40 30 20

0x04 36 00 D9 28 11 00 00 1C 21 39 90 30 62 1A 27 40

0x05 68 B0 36 00 D9 28 11 00 00 1C 00 00 00 FD 00 38

0x06 4B 1C 53 0F 00 0A 20 20 20 20 20 20 00 00 00 FC

0x07 00 32 32 4C 53 34 44 2D 5A 42 0A 20 20 20 01 (e-2)

0x00 02 03 21 F1 4E 81 02 03 15 12 13 04 14 05 20 21

0x01 22 1F 10 23 09 07 07 83 01 00 00 65 03 0C 00 10

0x02 00 01 1D 00 80 51 D0 1C 20 40 80 35 00 BC 88 21

0x03 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 13

0x04 8E 21 00 00 18 02 3A 80 18 71 38 2D 40 58 2C 45

0x05 00 06 44 21 00 00 1E 01 1D 80 18 71 1C 16 20 58

0x06 2C 25 00 C4 8E 21 00 00 9E 4E 1F 00 80 51 00 1E

0x07 30 40 80 37 00 BC 88 21 00 00 18 00 00 00 00 (f)

* Before AV ADC Calibration, should be executed the “Tool option 1”

5. Select method of Tool option 1

1) Press ADJ Key in the Adjust remote control.

2) Select “Tool option 1” by using

D/E (CH+/-) key, and press

A(ENTER).

3)Select “Maker” by using D/E (CH+/-) key, and change the

module maker and. applied module classification by using

F/G (VOL+/-).

4) Select “Inch” by using

D/E (CH+/-) key, and change the

module according to the inch of model.

5) Select “Tool” by using

D/E (CH+/-) key, and change the

tool name according to the model.

(Inch of model : 26”, 32”, 37”, 42”, Applied module under the classification)

6) After changing Tool option 1, push the EXIT key.

6. ADC Calibration

- System control RS-232 Host should be “PC” for adjustment.

- Before AV ADC Calibration, execute the “Module selection”.

6.1. Adjustment of RF/AV/S-VIDEO

(1) Required Equipments

- Remote controller for adjustment

- MSPG-925FS Pattern Generator (Which has Video

Signal: 7 Color Bar Pattern shown in Fig. 1) => Model: 202 / Pattern: 65

(2) Method of Auto RF/AV/S-VIDEO Color Balance.

1) Input the Video Signal : 7 Color Bar signal into AV1 or

AV2.

2) Set the PSM to Dynamic mode in the Picture menu.

3) Press IN-START key on R/C for adjustment.

4) Press the

G(Vol.+) key to operate the set, then it

becomes automatically.

5) Auto-RGB OK means the adjustment is completed.

6.2. Adjustment of Component

(1) Required Equipments

- Remote controller for adjustment

- MSPG-925FS Pattern Generator (Which has 720p/50Hz

YPbPr output Pattern shown in Fig.1) => Model:215/Pattern: 65

(2) Method of Auto Component Color Balance

1) Input the Component 720p/50Hz 7 Color Bar(MSPG-

925FS model:215, pattern:65) signal into Component.

2) Set the PSM to Dynamic mode in the Picture menu

3) Press the IN-START key on R/C for adjustment.

4) Press the

G(Vol.+) key to operate the set , then it

becomes automatically.

5) Auto-RGB OK means the adjustment is completed.

6.3 Adjustment of RGB

(1) Required Equipments

- Remote controller for adjustment

- MSPG-925F Pattern Generator

(Which has XGA [1024*768] 60Hz 8 Color Bar 100% pattern shown in Fig.1)

(2) Method of Auto RGB Color Balance

1) Input the PC 1024x768@60Hz 100% Color Bar pattern

(MSPG-925F model:37, pattern:33) into RGB. (Using D-sub to D-sub cable)

2) Set the PSM to Dynamic mode in Picture menu.

3) Press the IN-START key on R/C for adjustment

4) Press the

G(Vol.+) key operate To set , then it becomes

automatically.

5) Auto-RGB OK means adjustment is completed.

- 11 -

Only for training and service purposes

ADC RF/AV/S-VIDEO Component RGB-PC

MSPG925FS PALJ Model:215 (720P) Model: 60

INPUT SELECT AV2 Pattern:65 (1024*768 60Hz)

Model: 202 (PAL-BGDHI) 720P/50Hz Pattern: 65

Pattern: 65 7 Color Bar

PAL 7 Color Bar

<Fig. 1>

Only for training and service purposes

- 12 -

* Before White-balance, the AV ADC should be done.

7. White Balance

* Test Equipment

Color Analyzer (CA-210/CH.9)

-> When you adjust LCD color temperature, on Color analyzer (CA-210), you should use Channel 9 which is Matrix compensated (White, Red, Green, Blue revised) by CS-1000 and adjust in accordance with White balance adjustment coordinate which is specified on the next.

* Color temperature standards according to CSM and Module

Cool : 11,000k Medium : 9,300k Warm : 6,500k

* White balance adjustment coordinate and color temperature

- PC (for communication through RS-232C)

-> UART Baud rate : 115200 bps

- Luminance Y AV : upper 100 cd/m2(Typ : 250 cd/m2)

-> Applying to Cool, Medium, Warm mode

* Connecting picture of the measuring instrument (On

Automatic control ) Inside PATTERN is used when W/B is controlled. Connect to auto controller or push control R/C IN-START

-> Enter the mode of White-Balance, the pattern will come out.

* Auto adjustment Map (RS-232C)

* Auto-control interface and directions

1) Adjust in the place where the influx of light like floodlight around is blocked. (illumination is less than 10ux).

2) Adhere closely the Color Analyzer ( CA-210 ) to the module less than 10cm distance, keep it with the surface of the Module and Color Analyzer’s Prove vertically.(80~100°).

3) Aging time

- After aging start, keep the power on (no suspension of

power supply) and heat-run over 15 minutes.

- Using ‘no signal’ or ‘full white pattern’ or the others,

check the back light on.

7.1. Auto white Balance

(Set:RS-232, Host:PC, Baud Rate:115200bps, Download:Cortez)

Inside pattern is used when balance is controlled. Connect as below figure and click the start button on W/B execution program. W/B is automatically processing Cool --> Medium --> Warm in order. When W/B is completed, you can see ‘OK’ on PC monitor.

Type LD73B

Baud Rate Data bit Stop bit Parity

115200 8 1 None

Index Cmd 1 Cmd 2 Data Min Value Max Value

R-Gain_Normal j a 00(00) 128(80)

G-Gain_Normal j b 00(00) 128(80)

B-Gain_Normal j c 00(00) 128(80)

R-Gain_Warm j d 00(00) 128(80)

G-Gain_Warm j e 00(00) 128(80)

B-Gain_Warm j f 00(00) 128(80)

R-Gain_Cool j g 00(00) 128(80)

G-Gain_Cool j h 00(00) 128(80)

B-Gain_Cool j i 00(00) 128(80)

R-Offset_Normal l j 00(00) 128(80)

G-Offset_Normal l k 00(00) 128(80)

B-Offset_Normal l l 00(00) 128(80)

R-Offset_Warm l m 00(00) 128(80)

G-Offset_Warm l n 00(00) 128(80)

B-Offset_Warm l o 00(00) 128(80)

R-Offset_Cool l p 00(00) 128(80)

G-Offset_Cool l q 00(00) 128(80)

B-Offset_Cool l r 00(00) 128(80)

Internal Pattern signal w b 00 Starting W/B ADJ

Internal Pattern signal w b 10 Using internal Pattern

Internal Pattern signal w b ff Ending W/B ADJ

Cool CS-1000 CA-210(CH 9)

x 0.276 0.276±0.002

y 0.283 0.283±0.002

Δuv 0.000 0.000

Medium CS-1000 CA-210(CH 9)

x 0.285 0.285±0.002

y 0.293 0.293±0.002

Δuv 0.000 0.000

Warm CS-1000 CA-210(CH 9)

x 0.313 0.313±0.002

y 0.329 0.329±0.002

Δuv 0.004 0.004

<Fig. 2> Connecting picture (On Automatic Control)

7.2. Manual white Balance

- One of R Gain / G Gain / B Gain should be kept on 80, and others are controlled lowering from 80

1) Press ‘power on’ of the control R/C, set heat run to white by

pressing

G, and heat run over 15 minutes. (Set : RS-233

Host : PC, Baud Rate : 115200bps, Download : Cortez)

2) Zero Calibrate CA-210, and when controlling, stick the

sensor to the center of LCD module surface.

3) Double click In-start key on Controlling R/C and get in

‘white balance’.

4) Set test-pattern on and display inside pattern. Control is

carried out on three color temperature, COOL, MEDIUM, WARM. (Control is carried out three times,)

5) When the R/G/B GAIN is 80 on OSD, it is the FULL

DYNAMIC Range of the Module. In order to control white balance without the saturation of FULL DYNAMIC Range and DATA, one of R Gain / G Gain / B Gain should be kept on 80, and other two is controlled lowering from 80.

* Color Temperature: Cool, Medium, Warm

1) When R GAIN is set to 80

- Control G GAIN and B GAIN by lowering from 80.

2) When B GAIN is set to 80

- Control R GAIN and G GAIN by lowering from 80.

3) When G GAIN is set to 80

- Control R GAIN and B GAIN by lowering from 80. One of R Gain / G Gain / B Gain should be kept on 80, and adjust other two lower than 80.

(When R/G/B GAIN are all 80, it is the FULL DYNAMIC Range of Module)

8. Set information(Serial No & Model name)

(1) Setting up like bottom figure (After setting white balance,

this is set)

1) Press ADJ Key in the Adjust remocon.

2) Select “System Control 2” by using

D/E(CH+/-) key,

and press

A(ENTER).

3) Using Adjust remocon, RS-232 Host & Baud Rate &

Download value change (RS-232 Host:Gprobe, Baud Rate:115200bps, Download:Cortez)

(2) Bar-code scanning

1) Push the menu button in DTV mode. Select the STATION -> Diagnostics -> To set

2) Check the Serial Number.

- 13 -

Only for training and service purposes

System Control2

System 4-SYS Spread on On RS-232 Host Gprobe Baud rate 115200bps Download Cortez AGC-L 0 140 Audio Delay 0 DVI EQ 2 EQ Gain OFF

LD73B Cortez 1.00 Sti 5100 1.00 UTT 40 Hr.

-----------------------------------------Tool Option1 197 Tool Option2 97 Area Option 0 OPTION1 14 OPTION2 2 OPTION3 3 OPTION4 192 System Control1

System Control2

System Control3 BlkLine Detector Power-off History Panel control Fan control

XSTUDIO Control

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