LG 40LX570H-UA Schematic

Internal Use Only

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LED TV

SERVICE MANUAL

CHASSIS : LA5CJ

MODEL : 40LX570H/560H

MODEL : 40LX570H/560H-UA

CAUTION

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

Printed in KoreaP/NO : MFL69175102 (1504-REV00)

CONTENTS

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

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

SERVICING PRECAUTIONS ................................................................... 4

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

ADJUSTMENT INSTRUCTION ............................................................... 8

TROUBLE SHOOTING GUIDE ............................................................... 17

BLOCK DIAGRAM ................................................................................. 25

EXPLODED VIEW .................................................................................. 26

SCHEMATIC CIRCUIT DIAGRAM ........................................... APPENDIX

Only for training and service purposes

- 2 -

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and 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 1 W), keep the resistor 10 mm 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 1 MΩ and 5.2 MΩ. 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 1.5 K / 10 watt resistor in parallel with a 0.15 uF 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

0.5 mA. 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

Only for training and service purposes

- 3 -

SERVICING PRECAUTIONS

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

SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conict 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 specied 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 ammable mixture. Unless specied 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 xtures specied in this

service manual.

CAUTION: Do not connect the test xture 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 eld-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 sol-

der removal devices not classied as “anti-static” can generate electrical charges sufcient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate

electrical charges sufcient 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 oor can generate static electricity sufcient 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 1.25 cm) 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 ows 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.

Only for training and service purposes

- 4 -

IC Remove/Replacement

Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent at 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.

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.

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.

Only for training and service purposes

- 5 -

SPECIFICATION

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

1. Application range

This specification is applied to the LED TV used LA5CJ chassis.

2. Requirement for Test

Each part is tested as below without special appointment.

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

2) Relative Humidity: 65 % ± 10 %

3) Power Voltage : Standard input voltage (AC 100-240 V~, 50/60 Hz) * Standard Voltage of each products 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 : CE, IEC specification

- EMC : CE, IEC

4. Model General Specification

No. Item Specication Remarks

1 Receiving System ATSC / NTSC-M / 64 QAM / 256 QAM North America

1) VHF : 02~13

2) UHF : 14~69

2 Available Channel

3 Input Voltage North America

4 Market North America

5 Screen Size 28 inch Wide (1366 × 768) HD + 60Hz

6 Aspect Ratio 16:9

7 Tuning System FS

8 Module

9 Operating Environment

10 Storage Environment

3) DTV : 02-69

4) CATV : 01~135

5) CADTV : 01~135

AC 100 ~ 240V@ 50/60Hz

32 inch Wide (1920 × 1080) FHD + 60Hz

40 inch Wide (1920 × 1080) FHD + 60Hz

43 inch Wide (1920 × 1080) FHD + T120Hz

49 inch Wide (1920 × 1080) FHD + T120Hz

55 Inch Wide (1920 × 1080) FHD + T120Hz

65 Inch Wide (1920 x 1080) FHD + T240Hz

HC275EXN-VSDP1 28LX570H-UA

LC320DUE-FHA3 32LX570H/560H-UA

HC400DUN-VCKN5 40LX570H/560H-UA

LC430EUE-FHM3 43LX570H/560H-UA

LC490EUE-FHM3 49LX570H/560H-UA

LC550EUE-FHM3 55LX570H-UA

LC650EUF-FHM3 65LX570H-UA

1) Temp : 0 ~ 40 deg

2) Humidity : ~ 80 %

1) Temp. : -20 ~ 60 deg

2) Humidity : ~ 85%

Mark : 110V, 60Hz (N.America)

Only for training and service purposes

- 6 -

5. Video resolutions

5.1. HDMI Input(PC/DTV)

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

PC DDC

DTV

1 720*480 31.500 60.000 27.027 SDTV 480P

2 720*480 31.470 59.940 27.000 SDTV 480P

3 1280*720 45.000 60.000 74.250 HDTV 720P

4 1280*720 44.960 59.940 74.176 HDTV 720P

5 1920*1080 33.750 60.000 74.250 HDTV 1080I

6 1920*1080 33.720 59.940 74.176 HDTV 1080I

7 1920*1080 67.500 60.000 148.500 HDTV 1080P

8 1920*1080 67.4320 59.940 148.352 HDTV 1080P

9 1920*1080 27.000 24.000 74.250 HDTV 1080P

10 1920*1080 26.970 23.976 74.176 HDTV 1080P

11 1920*1080 33.750 30.000 74.250 HDTV 1080P

12 1920*1080 33.710 29.970 74.176 HDTV 1080P

640*350 31.468 70.09 25.17

720*400 31.469 70.08 28.32

640*480 31.469 59.94 25.17

800*600 37.879 60.31 40.00

1024*768 48.363 60.00 60.00

1152*864 54.348 60.053

1280*1024 63.981 60.020 108.0

1360*768 47.712 60.015 85.50

1920*1080 67.50 60.00 148.5

EGA X

DOS O

VESA(VGA) O

VESA(SVGA) O

VESA(XGA) O

VESA X

VESA (SXGA) O

VESA (WXGA) O

HDTV 1080P O

5.2. RGB input(PC)

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

PC DDC

1 640*350 31.468 70.09 25.17 EGA Х

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) Х

7 1360*768 47.712 60.015 85.50 VESA (WXGA) Х

8 1600*1200 75.00 60.00 162.0 VESA (UXGA) X

9 1920*1080 67.50 60.00 148.5 HDTV 1080P O

Only for training and service purposes

- 7 -

ADJUSTMENT INSTRUCTION

1. Application Range

This specification sheet is applied to all of the LED TV with LA5CJ chassis.

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 protect test instrument. (2) Adjustment must be done in the correct order. (3) The adjustment must be performed in the circumstance of

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

there is no specific designation (4) The input voltage of the receiver must keep 100~240V,

50/60Hz (5) At first Worker must turn on the SET by using Power Only

key. (6) The receiver must be operated for about 5 minutes prior to

the adjustment when module is in the circumstance of over

ºC

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 still image is displayed for a period of 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. Main PCBA Adjustments

(1) Adjust RGB (ADC) : RGB-PC 1080P (2) EDID/DDC download : HDMI and RGB-PC

* Remark

Above adjustment items can be also performed in Final Assembly if needed. Both Board-level and Final assembly adjustment items can be check using In-Start Menu 1. ADJUST CHECK. RGB-PC Adjust will be calculated by 480i adjust value.

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) (5) GND and HI-POT test

3.3. Appendix

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

4. MAIN PCBA Adjustments

4.1. ADC Adjustment

4.1.1. ADC

■ Enter Service Mode by pushing “ADJ” key,

■ Enter Internal ADC mode by pushing “►” key at “8. ADC

Calibration”

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* ADC Calibration Protocol (RS232)

NO Item CMD 1 CMD 2 Data 0

Enter Adjust MODE

ADC adjust

Adjust ‘Mode In’

ADC Adjust

A A 0 0

A D 1 0

Adjust Sequence

▪aa 00 00 [Enter Adjust Mode] ▪xb 00 40 [Component1 Input (480i)] ▪ad 00 10 [Adjust 480i Comp1] ▪xb 00 60 [RGB Input (1024*768)] ▪ad 00 10 [Adjust 1024*768 RGB] ▪aa 00 90 End Adjust mode

* Required equipment : Adjustment R/C.

4.2. EDID 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

(1) Since EDID data is embedded, EDID download JIG, HDMI

cable and D-sub cable are not need.

(2) Adjust by using remote controller.

4.2.3. Download method

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

(2) Select EDID D/L (PCM) menu. (3) By pressing Enter key, EDID download will begin (4) If Download is successful, OK is displayed, but If

Download is failure, NG is displayed.

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

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G G

When transfer the ‘Mode In’, Carry the command.

Automatically adjustment (The use of a internal pattern)

Only for training and service purposes

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

Cable.

- 8 -

4.2.4. EDID DATA (PCM)

- HDMI1 HD 8BIT (C/S : 6E08), Only for 28LX570H-UA

- HDMI1 FHD 8BIT (C/S : E608),

32/40/43/49LX560H, 32/40/43/49/55LX570H

- HDMI2 HD 8BIT (C/S : 6EF8) , Only for 28LX570H-UA

- HDMI3 HD 8BIT (C/S : 6EE8) , Only for 28LX570H-UA

- HDMI2 FHD 8BIT (C/S : E6F8),

32/40/43/49LX560H, 32/40/43/49/55LX570H

- HDMI3 FHD 8BIT (C/S : E6E8),

32/40/43/49LX560H, 32/40/43/49/55LX570H

- RGB-HD 8BIT (C/S : 87) , Only for 28LX570H-UA

Only for training and service purposes

- 9 -

- RGB-FHD 8BIT (C/S : FF), 32/40/43/49LX560H, 32/40/43/49/55LX570H

- RGB-FHD 10BIT (C/S : FF), Only for 65LX570H-UA

- HDMI1 FHD 10BIT (C/S : E6C1), Only for 65LX570H-UA

- HDMI2 FHD 10BIT (C/S : E6B1), Only for 65LX570H-UA

- HDMI3 FHD 10BIT (C/S : E6A1), Only for 65LX570H-UA

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.

1) Case : Cool Mode

- To adjust the white balance without the saturation, G gain should be adjust at least 172 and change the others (R,B Gain)

* When R or B gain is over 255, G gain can be adjust

below 172)

2) Case : Medium / Warm Mode

- To adjust the white balance without the saturation, Fix the one of R/G/B gain to 192 (default data) and decrease the others.

(3) Adj. condition: normal temperature

- Surrounding Temperature: 25±5 ºC

- Warm-up time: About 5 Min

- Surrounding Humidity: 20% ~ 80%

- Before White balance adjustment, Keep power on status, don’t power off

5.1.1.2. 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.

Only for training and service purposes

- 10 -

5.1.2. Equipment

* If TV internal pattern is used, not needed

(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)

→ Only when internal pattern is not available

※ Color Analyzer Matrix should be calibrated using

CS-1000

5.1.3. Equipment connection

Color Analyzer

Probe

RS- 232C

Pattern Generator

Signal Source

RS-232C

Computer

RS-232C

5.1.4. Adjustment Command (Protocol)

(1) RS-232C Command used during auto-adj

RS-232C

COMMAND

CMD ID D ATA

Wb 00 00 Begin White Balance adj.

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

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.

▪Adj. Map - Applied Model :

32/40/43/49/55/65LX570H-UA, 32/40/43/49LX560H-UA.

R Gain j G 00 C0 172 G Gain j H 00 C0 172

Cool

Medium

Warm

B Gain j I 00 C0 192 R Cut 64 G Cut 64 B Cut 64 R Gain j A 00 C0 192 G Gain j B 00 C0 192 B 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

B Cut 64

Adj. item

Explanation

Command

(lower caseASCII)

CMD1 CMD2 MIN MAX

Data Range

(Hex.)

Default

(Decimal)

5.1.5. Adjustment method

5.1.5.1. Auto WB calibration (1) Set TV in ADJ mode using P-ONLY key (or POWER ON

key)

(2) Place optical probe on the center of the display

- It need to check probe condition of zero calibration before

adjustment. (3) Connect RS-232C Cable (4) Select mode in ADJ Program and begin a adjustment. (5) When WB adjustment is completed with OK message,

check adjustment status of pre-set mode (Cool, Medium,

Warm) (6) Remove probe and RS-232C cable. * 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. White-

Balance then press the cursor to the right (KEY►).

(When KEY(►) is pressed 204 Gray(80IRE) internal

pattern will be displayed)

(4) Adjust modes

1) Cool : Fix the G gain at least 172 and change the others (R/B Gain).

* If R or B gain is over 255, G gain can be adjust below

172.

2) Adjust two modes (Medium / Warm) :

Fix the one of R/G/B gain to 192 (default data) and

decrease the others.

* CASE : Cool mode

First adjust the coordinate far away from the target value(x, y).B

1. x, y >target

2. x, y < target

3. x > target , y < target

4. x < target , y > target

- Every 4 case have to fit y value by adjusting B Gain and then fit x value by adjusting R-Gain

- In this case, increasing/decreasing of B Gain and R Gain can be adjusted.

► How to adjust

1. Fix G gain at least 172 : Adjust R, B Gain ( In Case of Mostly Blue Gain Saturation )

2. When R or B Gain > 255, Release Fixed G Gain and

Readjust

Only for training and service purposes

- 11 -

* CASE : Medium / Warm mode

First adjust the coordinate far away from the target value(x, y).

1. x, y > target i) Decrease the R, G.

2. x, y < target i) First decrease the B gain, ii) Decrease the one of the others.

3. x > target, y < target i) First decrease B, so make y a little more than the

target.

ii) Adjust x value by decreasing the R

4. x < target , y > target i) First decrease B, so make x a little more than the target. ii) Adjust x value by decreasing the G

5.1.6. Reference (White Balance Adj. coordinate and color

temperature)

▪ White balance adjustment for 28inch (Do not adjust white

balance)

* RGB Gains are fixed data for each model.

Insert RS-232C Jack which is connected with PC for White Balance or equivalent device.

-> Total Assembly line should be check whether the color coordinate(x,y) data refer to below table were meet or not.

Color coordinate is differ from panel’s characteristics of

color temperature.

Please check panel characteristics about color

temperature.

- Cool Panel (28LX570H-UA)

Mode

Cool 0.271 0.270 13,000 -0.003 Upper C50

Medium 0.286 0.289 9300 -0.003 Lower 0

Warm 0.313 0.329 6500 0.003 Lower W50

▪ Luminance: 204 Gray, 80IRE ▪ Standard color coordinate and temperature using CA-210(CH

14)

Mode

Cool 0.271±0.002 0.270±0.002 13000 K -0.003

Medium 0.286±0.002 0.289±0.002 9300 K 0.0000

Warm 0.313±0.002 0.329±0.002 6500 K 0.0000

x y CCT duv Method

W/Balance Adjust

Coordinate

x y

W/B UI

Temp ∆uv

(normal line) LGD Cell (LX5xxx)

▪ Standard color coordinate and temperature using CA-210(CH

14) – by aging time

Aging time (Min)

1 0-2 282 289 297 308 324 348

2 3-5 281 287 296 306 323 346

3 6-9 279 284 294 303 321 343

4 10-19 277 280 292 299 319 339

5 20-35 275 277 290 296 317 336

6 36-49 274 274 289 293 316 333

7 50-79 273 272 288 291 315 331

8 80-119 272 271 287 290 314 330

9 Over 120 271 270 286 289 313 329

* INX, AUO, Sharp, CSOT Models (Cool Mode Spec : 13000K)

▪ Standard color coordinate and temperature using

CA-210(CH-14) – by aging time

spec 271 270 286 289 313 329

target 278 280 293 299 320 339

Cool Medium Warm

x y x y x y

271 270 286 289 313 329

Cool med warm

x y x y x y

5.2. Tool Option setting & Inspection per countries

5.2.1. Overview

(1) Tool option selection is only done for models in Non-USA

North America due to rating

(2) Applied model: LA4BX Chassis applied to CANADA and

MEXICO

5.2.2. Country Group selection

(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

5.2.3. Tool Option Inspection

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

Only for training and service purposes

- 12 -

5.2.3. Tool Option Inspection

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

Model Tool option

1 2 3 4 5 6

28LX570H-UA 7173 1331 43584 8736 531 265

32LX570H-UA 679 1075 43456 8736 1555 267

32LX560H-UA 679 1075 43456 9760 1555 267

40LX570H-UA 1706 3123 43712 8736 531 265

40LX560H-UA 1706 3123 43712 9760 531 265

43LX570H-UA 684 3123 43584 8736 1555 265

43LX560H-UA 684 3123 43584 9760 1555 265

49LX570H-UA 686 3123 43584 8736 1555 265

49LX560H-UA 686 3123 43584 9760 1555 265

55LX570H-UA 688 3123 43584 8736 1555 265

65LX570H-UA 8882 3123 43840 8736 3603 265

Commercial Tool Option : 3

5.3. Ship-out mode check (In-stop)

▪ After final inspection, press In-Stop key of the Adj. R/C and

check that the unit goes to Stand-by mode.

6. GND and HI-POT Test

6.1. GND & HI-POT auto-check preparation

(1) Check the POWER CABLE and SIGNAL CABE insertion

condition.

6.2. 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.

6.3. Checkpoint

(1) Test voltage

1) 3 Poles

- GND: 1.5 KV/min at 100 mA

- SIGNAL: 3 KV/min at 100 mA

2) 2 Poles

- SIGNAL: 3 KV/min at 100 mA (2) TEST time: 1 second (3) TEST POINT

1) 3 Poles

- GND Test = POWER CORD GND and SIGNAL

CABLE GND.

- Hi-pot Test = POWER CORD GND and LIVE & NEUTRAL.

2) 2 Poles

- Hi-pot Test = Accessible Metal and LIVE & NEUTRAL. (4) LEAKAGE CURRENT: At 0.5 mArms

Only for training and service purposes

7. Audio

7.1. Audio input condition

(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation (2) CVBS, Component: 1KHz sine wave signal (0.4Vrms) (3) RGB PC: 1KHz sine wave signal (0.7Vrms)

7.2. Specification

Item Min Typ Max Unit Remark

9.0 10.0 12 W

4.5 5 6 W

8.5 8.9 9.8 Vrms

4.25 4.65 4.9 Vrms

10.0 14.0 W Measurement

5 7 W

- 13 -

Audio practical

max Output,

L/R

(Distortion=10%

max Output)

Speaker

(8Ω Impedance)

* Measurement condition: (1) RF input: Mono, 1KHz sine wave signal, 100% Modulation (2) CVBS, Component: 1KHz sine wave signal 0.4Vrms (3) RGB PC: 1KHz sine wave signal 0.7Vrms

Measurement condition EQ Off AVL Off Clear Voice Off

condition EQ On AVL On Clear Voice On

DRC operation under 12W (LX series)

Only for 28LX570H-UA

(LX series)

Only for 28LX570H-UA

8. USB S/W Download(Service only)

[picture 1]

(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 Lower, it didn’t work. But your downloaded version is Higher, USB data is automatically detecting (Download Version High & Power only mode, Set is automatically Download)

(3) Show the message “Copying files from memory”

(4) Updating is starting.

9. Test factor for Commercial features

Model info. Commercial Feature

Model Name inch RJP

28 32

LX570H-UA

LX560H-UA

40 43 49 55 65

32 40 43 49

Ext SPK

Out

O O O O O

X O X O O

b-LAN MPI

Pro:

Idiom

(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 control. (2) Select "Tool Option 1" and push "OK" key. (3) Punch in the number. (Each model has their number)

9.1. RJP TEST

ᐭ

ᐮ

Only for training and service purposes

9.1.1. Equipment & Condition

▪ Jig (Speaker out JIG) or Oscilloscope ▪ Power only mode

9.1.2. Test sequence

(1) Operate switches on Jig as above

1) Select Power supply mode (Adapter/TV, 5V/12V)

2) Select check mode (Pin 5 : RJP Pin Check) (2) Press p-only button using the adjust remocon. (3) Connect TV set and Jig with RJ-45 cable. (4) You can see the test result of it on TV screen.

- If shown “OK” it’s normal “NG” it’s defect.

- If defect, check the connection once again as done

above.

- 14 -

9.2. External Speaker Out

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 5)N+]6LQHZDYH

Measuring point

Waveform of Oscilloscope

(1) Connect external speaker to speaker out port with phone

jack on TV rear bracket.

(2) Check the Max. speaker output is 1W or not. Sine wave

with 1KHz will be displayed (3) Check Both of the signal in speaker. (only Power -> Fived 1W Default)

-> Check the input signal(1KHZ, Sine wave) and the

waveform of output by utilizing oscilloscope.

9.3. b_LAN Main board Check

[Only for XXLX570H series]

* Below b-LAN test procedure can be performed in DFTs of

SMT lines not Final Assembly.

9.3.1. Overview

It is LNET RF modem & FTG card

9.3.2. Equipment

(1) b-LAN Checker: UTC-1000 (with Cable accessory) (2) Computer(for test result monitoring) (3) Connection JIG

(4) Check

- Setting JIG

1) Connect UTC-1000 Equipment to JIG device as a like left picture

- Connection Line: UTC-1000 TOP1 <--> Game port(RJ21)

-> TV-LINK CFG (Phone Jack) UTC-1000 TOP2 -> JIG 11pin Connection UTC-1000 RF1 <--> b-LAN RF IN UTC-1000 LAN <--> PC LAN Port

- Working procedure

1) Connection UTC-1000 LAN <--> PC LAN Port UTC-1000 TOP1 <--> Game port(RJ21)

-> TV-LINK CFG (Phone Jack) UTC-1000 RF1 <--> b-LAN RF IN

2) Power on JIG : Switch on front of the JIG

3) Test Start

UTC-1000 TOP2 <--> JIG 11pin Connection

4) Checking b-LAN MAC Address

Check whether it is same their address numbers or not

between b-LAN Label and on the pc address numbers.

-Equipment connection map & b_LAN Check

Only for training and service purposes

- 15 -

* Checking JIG contents

(1) Check whether displaying all “Pass” or not at the number

3.4.6.7.9 contents of UTC-1000 on the PC (2) Check “Version 6.27” of the 1. b-LAN Application version (3) Check whether it is same their address numbers or not

between b-LAN Label and

(4) MAC Address on the pc.

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