LG 47LH40ED-SA Schematic

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

LCD TV

SERVICE MANUAL

CHASSIS : LJ92J

MODEL : 47LH40ED 47LH40ED-SA

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CONTENTS

CONTENTS ..............................................................................................	2
PRODUCT SAFETY ..................................................................................	3
SPECIFICATION ........................................................................................	6
ADJUSTMENT INSTRUCTION ...............................................................	14
TROUBLE SHOOTING ............................................................................	17
BLOCK DIAGRAM...................................................................................	58
EXPLODED VIEW ..................................................................................	59
SVC. SHEET ...............................................................................................

Copyright	LG Electronics. Inc. All right reserved.	- 2 -	LGE Internal Use Only
Only for training and service purposes

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 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)

Leakage Current Hot Check (See below Figure) Plug the AC cord directly into the AC outlet.

Do not use a line Isolation Transformer during this check.

Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor between a known good earth ground (Water Pipe, Conduit, etc.) and the exposed metallic parts.

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

Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS which is corresponds to 0.5mA.

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

Leakage Current Hot Check circuit

AC Volt-meter

To Instrument’s

Good Earth Ground such as WATER PIPE, CONDUIT etc.

exposed METALLIC PARTS

0.15uF

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.

1.5 Kohm/10W

When 25A is impressed between Earth and 2nd Ground for 1 second, Resistance must be less than 0.1 Ω

*Base on Adjustment standard

Copyright	LG Electronics. Inc. All right reserved.	- 3 -	LGE Internal Use Only
Only for training and service purposes

SERVICING PRECAUTIONS

CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication.

NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First.

General Servicing Precautions

1.Always unplug the receiver AC power cord from the AC power source before;

a.Removing or reinstalling any component, circuit board module or any other receiver assembly.

b.Disconnecting or reconnecting any receiver electrical plug or other electrical connection.

c.Connecting a test substitute in parallel with an electrolytic capacitor in the receiver.

CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard.

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, suctiontype 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.

Copyright	LG Electronics. Inc. All right reserved.	- 4 -	LGE Internal Use Only
Only for training and service purposes

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.

Copyright	LG Electronics. Inc. All right reserved.	- 5 -	LGE Internal Use Only
Only for training and service purposes

SPECIFICATION

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

1. Application range							3. Test method
	This specification is applied to the LCD TV used LJ92J							1) Performance: LGE TV test method followed
	chassis.							2) Demanded other specification
2. Requirement for Test								- Safety: UL, CSA, IEC specification, CE
								- EMC: FCC, ICES, IEC specification, CE
	Each part is tested as below without special appointment.
	1) Temperature : 25±5ºC (77±9ºF), CST : 40±5ºC
	2) Relative Humidity : 65±10%
	3) Power Voltage : Standard input voltage(100~240V@50/60Hz)
		* 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.
4. Electrical specification
	4.1 General Specification
	No		Item				Specification			Remark
	1.		Receiving System		1) SBTVD / NTSC / PAL-M / PAL-N
			Available Channel	1) VHF : 02~13
	2.				2) UHF : 14~69
					3) DTV : 02-69
					4) CATV : 01~135
	3.		Input Voltage		1) AC 100 ~ 240V 50/60Hz				Mark : 110V, 60Hz
	4.		Market		Central and South AMERICA
	5.		Screen Size		42 inch Wide (1920 X 1080)					42LH40ED-SA
					47 inch Wide (1920 X 1080)					47LH40ED-SA
	6.		Aspect Ratio	16:9
	7.		Tuning System	FS
	8.		Module		LC420WUE-SBC1 (VITIAZ 4)					42LH40ED-SA
					LC470WUE-SBB1 (VITIAZ4)					47LH40ED-SA
	9.		Operating Environment		1) Temp	:	0 ~ 40 deg
					2) Humidity :		~ 80 %
	10.		Storage Environment		1) Temp	: -20 ~ 60 deg
					2) Humidity :		~ 85 %

Copyright	LG Electronics. Inc. All right reserved.	- 6 -	LGE Internal Use Only
Only for training and service purposes

5. Chromiance & Luminance spec.

No			Item			Min		Typ		Max			Unit	Remark
1.		Max Luminance			Module	400		500					cd/m	LC470WUE-SBB1
		(Center 1-point / Full White			Set	400		500					cd/m
		Pattern)
2.		Luminance uniformity				77						%		Full white
3.		Color	RED		X	Typ.		0.636		Typ.
4.		coordinate			Y	-0.03		0.334		+0.03
5.			GREEN		X			0.290
6.					Y			0.608
7.			BLUE		X			0.145
8.					Y			0.064
9.			WHITE		X			0.279
10.					Y			0.292
11.		Color coordinate uniformity												N/A
		Contrast ratio				700:1		1000:1						NORMAL
						7000:1		10000:1						DCR
12.		Color	Cool			0.274		0.276		0.278				<Test Condition>
		Temperature				0.281		0.283		0.285
														85% Full white pattern
			Standard			0.283		0.285		0.287
														** The W/B Tolerance is
						0.291		0.293		0.295
														–0.015 for Adjustment
			Warm			0.311		0.313		0.315
														Dynamic contrast : off
						0.327		0.329		0.331
														Dynamic color : off
														OPC : off
13.		Color Distortion, DG								10.0		%
14.		Color Distortion, DP								10.0			deg
15.		Color S/N, AM/FM				43.0							dB
16.		Color Killer Sensitivity				-80							dBm

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

No	Resolution	H-freq(kHz)	V-freq.(kHz)	Pixel clock	Proposed
1.	720*480	15.73	60	13.5135	SDTV ,DVD 480I
2.	720*480	15.73	59.94	13.5	SDTV ,DVD 480I
3.	720*480	31.47	60	27.027	SDTV 480P
4.	720*480	31.47	59.94	27.0	SDTV 480P
5.	1280*720	45.00	60.00	74.25	HDTV 720P
6.	1280*720	44.96	59.94	74.176	HDTV 720P
7.	1920*1080	33.75	60.00	74.25	HDTV 1080I
8.	1920*1080	33.72	59.94	74.176	HDTV 1080I
9.	1920*1080	67.500	60	148.50	HDTV 1080P
10.	1920*1080	67.432	59.939	148.352	HDTV 1080P
11.	1920*1080	27.000	24.000	74.25	HDTV 1080P
12.	1920*1080	26.97	23.94	74.176	HDTV 1080P
13.	1920*1080	33.75	30.000	74.25	HDTV 1080P
14.	1920*1080	33.71	29.97	74.176	HDTV 1080P
15.	1920*1080	56.25	50.000	148.5	HDTV 1080P
16.	1920*1080	28.125	25.000	74.25	HDTV 1080P

Copyright	LG Electronics. Inc. All right reserved.	- 7 -	LGE Internal Use Only
Only for training and service purposes

7. RGB Input (PC)

No

Resolution

H-freq(kHz)

V-freq.(Hz)

Pixel clock(MHz)

Proposed

	PC					DDC
1.	640*350	31.468	70.09	25.17	EGA	X
2.	720*400	31.469	70.08	28.32	DOS	O
3.	640*480	31.469	59.94	25.17	VESA(VGA)	O
4.	800*600	35.156	56.25	36.00	VESA(SVGA)	O
5.	800*600	37.879	60.31	40.00	VESA(SVGA)	O
6.	1024*768	48.363	60.00	65.00	VESA(XGA)	O
7.	1280*768	47.776	59.870	79.5	CVT(WXGA)	O
8.	1360*768	47.712	60.015	85.50	VESA (WXGA)	O
9.	1280*1024	63.981	60.020	108.00	VESA	O
10.	1600*1200	75.00	60.00	162	VESA (UXGA)	O
11	1920*1080	67.5	60	148.5	HDTV 1080P	O

**RGB PC Monitor Range Limits

-Min Vertical Freq - 56 Hz

-Max Vertical Freq - 62 Hz

-Min Horiz. Freq - 30 kHz

-Max Horiz. Freq - 80 kHz

-Pixel Clock - 170 MHz

8. HDMI Input (PC/DTV)

No	Resolution	H-freq(kHz)	V-freq.(Hz)	Pixel clock(MHz)	Proposed
	PC					DDC
1	640*350	31.468	70.09	25.17	EGA	X
2	720*400	31.469	70.08	28.32	DOS	O
3	640*480	31.469	59.94	25.17	VESA(VGA)	O
4	800*600	35.156	56.25	36.00	VESA(SVGA)	O
5	800*600	37.879	60.31	40.00	VESA(SVGA)	O
6	1024*768	48.363	60.00	65.00	VESA(XGA)	O
7	1280*768	47.776	59.870	79.5	CVT(WXGA)	O
8	1360*768	47.712	60.015	85.50	VESA (WXGA)	O
9	1280*1024	63.981	60.020	108.00	VESA (SXGA)	O
10	1600*1200	75.00	60.00	162	VESA (UXGA)	O
11	1920*1080	66.587	59.934	138.5	HDTV 1080P	O
	DTV
1	720*480	31.47	60	27.027	SDTV 480P
2	720*480	31.47	59.94	27.00	SDTV 480P
3	1280*720	45.00	60.00	74.25	HDTV 720P
4	1280*720	44.96	59.94	74.176	HDTV 720P
5	1920*1080	33.75	60.00	74.25	HDTV 1080I
6	1920*1080	33.72	59.94	74.176	HDTV 1080I
7	1920*1080	67.500	60	148.50	HDTV 1080P
8	1920*1080	67.432	59.939	148.352	HDTV 1080P
9	1920*1080	27.000	24.000	74.25	HDTV 1080P
10	1920*1080	26.97	23.94	74.176	HDTV 1080P
11	1920*1080	33.75	30.000	74.25	HDTV 1080P
12	1920*1080	33.71	29.97	74.176	HDTV 1080P
17.	1920*1080	56.25	50.000	148.5	HDTV 1080P
18.	1920*1080	28.125	25.000	74.25	HDTV 1080P

**HDMI Monitor Range Limits

-Min Vertical Freq - 56 Hz

-Max Vertical Freq - 62 Hz

-Min Horiz. Freq - 30 kHz

-Max Horiz. Freq - 80 kHz

-Pixel Clock - 170 MHz

Copyright	LG Electronics. Inc. All right reserved.	- 8 -	LGE Internal Use Only
Only for training and service purposes

9. Consignment Setting (OUTGOING CONDITION)

No			Item		Condition
1.	Input Mode				TV02CH
2.	Volume Level				10
3.	Mute				Off
4.	Aspect Ratio				16:9
5.	System Color				PAL-M
6	Booster				On
7.	Picture		Picture Mode		Vivid
				Backlight	100
				Contrast	100
				Brightness	50
				Sharpness	70
				Color	70
				Tint	0
			Color Temperature		Cool
			Picture Reset
8.	Audio		Sound Mode		Standard
			Auto Volume		Off
			Clear Voice		Off
			SRS TruSurround XT		Off
			Balance		0
			TV Speaker		On
9.	Time		Clock		Auto
			Off Timer / On Timer		Off
			Sleep Timer / Auto Sleep
10.	Option		Language (Menu/Audio)		Portugues
			SimpLink		On
			Key Lock		Off
			Caption		Off
			Set ID		1
11.	Channel Memory				RF : 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
					14, 30, 51, 63
					CATV : 15, 16, 17

10. Mechanical Specification

No.

Item

Content

Unit

Remark

Width (W)

Length (D)

Height (H)

mm

Product

Before Packing

1153.2

337.4

791.5

mm

With Stand

1.

Dimension

1153.2

99.8

719

mm

Without Stand

After Packing

1485

255

860

mm

With Stand

Only SET

22.8kg

Kg

With Stand

2.

Product

20.2Kg

Kg

Without Stand

Weight

With BOX

28.6kg

Kg

With Stand

Container

40ft

40ft(H-CUBIC)

3.

Individual or Palletizing

Loading

Indi.

Woo den

Indi.

Wooden

Quantity

144

-

216

-

4.

Stand Assy

Swivel Degree

Swivel(+/- 20degree)

Swivel Force

1.5 Kgf(0.8Kgf ~ 2.5Kgf)

5.

Appearance

General

Refer to Standard of LG(56)G4-9002

Copyright	LG Electronics. Inc. All right reserved.	- 9 -	LGE Internal Use Only
Only for training and service purposes

ADJUSTMENT INSTRUCTION

1. Application Range	4. PCB Assembly Adjustment
This specification sheet is applied all of the LJ91D, LJ92J	4.1. CPLD DOWNLOAD : JTAG MODE
LCD TV models, which produced in manufacture department
or similar LG TV factory.

2.Notice

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. But it is flexible when its factory local problem occurs. .

3)The adjustment must be performed in the circumstance 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 must keep 100~220V, 50/60Hz.

5)Before adjustment, execute Heat-Run for 5 minutes.

• After Receive 100% Full white pattern (06CH) then process Heat-run

(or “8. Test pattern” condition of Ez-Adjust status)

•How to make set white pattern

1)Press Power ON button of Service Remocon

2)Press ADJ button of Service remocon. Select “8. Test pattern” and, after select “White” using navigation button, and then you can see 100% Full White pattern.

*In this status you can maintain Heat-Run useless any pattern generator

*Notice: if you maintain one picture over 20 minutes (Especially sharp distinction black with white pattern – 13Ch, or Cross hatch pattern – 09Ch) then it can appear image stick near black level.

3.Adjustment Items

3.1 PCB Assembly adjustment

•CPLD DOWNLOAD

•Adjust 480i Comp1

•Adjust 1080p Comp1/RGB

-If it is necessary, it can adjustment at Manufacture Line

-You can see set adjustment status at “1. ADJUST CHECK” of the “In-start menu”

3.2Set Assembly Adjustment

•EDID (The Extended Display Identification Data ) / DDC (Display Data Channel) download

•Color Temperature (White Balance) Adjustment

•Make sure RS-232C control

•Selection Factory output option

4.2. << PRINT PORT >> PIN MAP

Pin	JTAG Mode Signal Name
2	TCK
3	TMS
8	TDI
11	TDO
13	-
15	VCC
18 TO 25	GND

Copyright	LG Electronics. Inc. All right reserved.	- 10 -	LGE Internal Use Only
Only for training and service purposes

4.3. << 10P WAFER >> PIN MAP

Copyright	LG Electronics. Inc. All right reserved.	- 11 -	LGE Internal Use Only
Only for training and service purposes

4.4. Using RS-232C

Adjust 3 items at 3.1 PCB assembly adjustments “4.1.3 sequence” one after the order.

O Adjustment protocol

Order	Command	Set response
1. Inter the	ad 00 00	d 00 OK00x
Adjustment mode
2. Change the	kb 00 40	b 00 OK40x (Adjust 480i Comp1/1080p Comp1)
Source	kb 00 60	b 00 OK60x (Adjust 1080p RGB)
3.Start Adjustment	ad 00 10
4.Return the		OKx ( Success condition )
Response		NGx ( Failed condition )
5.Read	(main)	(main : component1 480i, RGB 1080p)
Adjustment data	ad 00 20	000000000000000000000000007c007b006dx
	(main)	(main : component1 1080p)
	ad 00 30	000000070000000000000000007c00830077x
6.Confirm	ad 00 99	NG 03 00x (Failed condition)
Adjustment		NG 03 01x (Failed condition)
		NG 03 02x (Failed condition)
		OK 03 03x (Success condition)
7. End of Adjustment	ad 00 90	d 00 OK90x

See ADC Adjustment RS232C Protocol_Ver1.0

OAdjustment protocol

-Pattern Generator : (MSPG-925FA)

-Adjust 480i Comp1 (MSPG-925FA : model :209 , pattern : 65)

-Adjust 1080p Comp1/RGB(MSPG-925FA:model : 225 , pattern : 65)

-Adjust RGB (MSPG-925FA:model :225 , Pattern :65) – RGB-PC Mode

*If you want more information then see the below Adjustment method (Factory Adjustment)

OAdjustment sequence

-ad 00 00 : Enter the ADC Adjustment mode.

-xb 00 40: Change the mode to Component1 (No actions)

-ad 00 10: Adjust 480i Comp

-ad 00 10: Adjust 1080p Comp

-xb 00 60: Change to RGB-PC mode(No action)

-ad 00 10: Adjust 1080p RGB

-ad 00 90: End of the adjustment

Copyright	LG Electronics. Inc. All right reserved.	- 12 -	LGE Internal Use Only
Only for training and service purposes

5. Factory Adjustment

5.1Manual Adjust Component 480i/1080p RGB 1080p

O Summary : Adjustment component 480i/1080i and RGB 1080p is Gain and Black levelsetting at Analog to Digital converter, and compensate the RGB deviation

OUsing instrument

-Adjustment remocon, 801GF(802B, 802F, 802R) or MSPG925FA pattern generator (It can output 480i/1080i horizontal 100% color bar pattern signal, and its output level must setting 0.7V±0.1V p-p correctly)

<Pic.4 Adjustment pattern : 480i / 1080p 60Hz Pattern >

*You must make it sure its resolution and pattern cause every instrument can have different setting

O Adjustment method 480i Comp1, Adjust 1080p Comp1/RGB (Factory adjustment)

•ADC 480i Component1 adjustment - Check connection of Component1

- MSPG-925FA Ë Model: 209, Pattern 65

•Set Component 480i mode and 100% Horizontal Color Bar Pattern(HozTV31Bar), then set TV set to Component1 mode and its screen to “NORMAL”

•ADC 1080p Component1 / RGB adjustment

-Check connection both of Component1 and RGB

-MSPG-925FA Model: 225, Pattern 65

•Set Component 1080p mode and 100% Horizontal Color Bar Pattern(HozTV31Bar), then set TV set to Component1 mode and its screen to “NORMAL”

•After get each the signal, wait more a second and enter the “IN-START” with press IN-START key of Service remocon. After then select “7. External ADC” with navigator button and press “Enter”.

•After Then Press key of Service remocon “Right Arrow(VOL+)”

•You can see “ADC Component1 Success”

•Component1 1080p, RGB 1080p Adjust is same method.

•Component 1080p Adjustment in Component1 input mode

•RGB 1080p adjustment in RGB input mode

•If you success RGB 1080p Adjust. You can see “ADC RGB-DTV Success”

5.2EDID (The Extended Display Identification Data) / DDC (Display Data Channel) Download.

OSummary

•It is established in VESA, for communication between PC and Monitor without order from user for building user condition. It helps to make easily use realize “Plug and Play” function.

•For EDID data write, we use DDC2B protocol.

OAuto Download

•After enter Service Mode by pushing “ADJ” key,

•Enter EDID D/L mode.

•Enter “START” by pushing “OK” key.

Caution: - Never connect HDMI & D-sub Cable when the user downloading .

- Use the proper cables below for EDID Writing.

Copyright	LG Electronics. Inc. All right reserved.	- 13 -	LGE Internal Use Only
Only for training and service purposes

Edid data and Model option download (RS232)

	NO	Item	CMD 1	CMD 2	Data 0
	Enter	Download	A	E	0	0	When transfer the ’Mode In’ ,
	download MODE	ModeIn					Carry the command.
	Edid data and						Automatically download
	Model option	Download	A	E	*Note1	*Note2
	download						(The use of a internal Data)
		Adjust Mode Out	A	E	9	0
		Adjustment	A	E	9	9	To check Download
		Confirmation					on Assembly line.

O Manual Download

•Write HDMI EDID data

-Using instruments

=> Jig. (PC Serial to D-Sub connection) for PC, DDC adjustment.

=> S/W for DDC recording (EDID data write and read)

=> D-sub jack

=> Additional HDMI cable connection Jig.

- Preparing and setting.

=> Set instruments and Jig. Like pic.5), then turn on PC and Jig.

=> Operate DDC write S/W (EDID write & read) => It will operate in the DOS mode.

Download jig

Main

PC

B/D

RGB cable

Pic.3) For write EDID data, setting Jig and another instruments.

• EDID data for LJ91D Chassis (Model name = LG TV) - HDMI-1 EDID table (0x33, 0x2C)

- HDM2 EDID table (0x33, 0x1C)

- HDMI-3 EDID table (0x33, 0x0C)

- Analog (RGB) EDID table (0x9B, 0x25)

See Working Guide if you want more information about EDID communication.

Copyright	LG Electronics. Inc. All right reserved.	- 14 -	LGE Internal Use Only
Only for training and service purposes

5.3Adjustment Color Temperature(White balance)

OUsing Instruments

•Color Analyzer: CA-210 (CH 9)

-Using LCD color temperature, Color Analyzer (CA-210) must use CH 9, which Matrix compensated (White, Red, Green, Blue compensation) with CS-2100. See the Coordination bellowed one.

•Auto-adjustment Equipment (It needs when Autoadjustment – It is availed communicate with RS-232C : Baud rate: 115200)

•Video Signal Generator MSPG-925F 720p, 216Gray (Model: 217, Pattern 78)

OConnection Diagram (Auto Adjustment)

•Using Inner Pattern

O White Balance Adjustment

If you can’t adjust with inner pattern, then you can adjust it using HDMI pattern. You can select option at "Ez-Adjust Menu – 7. White Balance" there items "NONE, INNER, HDMI". It is normally setting at inner basically. If you can’t adjust using inner pattern you can select HDMI item, and you can adjust.

In manual Adjust case, if you press ADJ button of service remocon, and enter "Ez-Adjust Menu – 7. White Balance", then automatically inner pattern operates. (In case of "Inner" originally "Inner" will be selected.

•Connect all cables and equipments like Pic.5)

•Set Baud Rate of RS-232C to 115200. It may set 115200 orignally.

•Connect RS-232C cable to set

•Connect HDMI cable to set

		C A -100+
F u l l W h i t e Pat t er n

C O L O R

A N A L Y Z E R

T Y PE ; C A -100+

RS-232C

•Using HDMI input

<Pic.5 Connection Diagram for Adjustment White balance> .

		¢ RS-232C Command (Commonly apply)
wb	00	00	White Balance adjustment start.
wb	00	10	Start of adjust gain (Inner white
			pattern)
wb	00	1f	End of gain adjust
wb	00	20	Start of offset adjust(Inner white
			pattern)
wb	00	2f	End of offset adjust
wb	00	ff	End of White Balance adjust(Inner
			pattern disappeared)

•"wb 00 00": Start Auto-adjustment of white balance.

•"wb 00 10": Start Gain Adjustment (Inner pattern)

•"jb 00 c0" :

•…

•"wb 00 1f": End of Adjustment

*If it needs, offset adjustment (wb 00 20-start, wb 00 2f-end)

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

Copyright	LG Electronics. Inc. All right reserved.	- 15 -	LGE Internal Use Only
Only for training and service purposes

OWhite Balance Adjustment (Manual adjustment)

•Test Equipment: CA-210

-Using LCD color temperature, Color Analyzer (CA-

210)must use CH 9, which Matrix compensated (White, Red, Green, Blue compensation) with CS2100. See the Coordination bellowed one.

•Manual adjustment sequence is like bellowed one.

-Turn to "Ez-Adjust" mode with press ADJ button of service remocon.

-Select "10.Test Pattern" with CH+/- button and press enter. Then set will go on Heat-run mode. Over 30 minutes set let on Heat-run mode.

-Let CA-210 to zero calibration and must has gap more 10cm from center of LCD module when adjustment.

-Press "ADJ" button of service remocon and select

"7.White-Balance" in "Ez-Adjust" then press " " button of navigation key.

(When press " " button then set will go to full white mode)

-Adjust at three mode (Cool, Medium, Warm)

-If "cool" mode

Let B-Gain to 192 and R, G, B-Cut to 64 and then control R, G gain adjustment High Light adjustment.

-If "Medium" and "Warm" mode

Let R-Gain to 192 and R, G, B-Cut to 64 and then control G, B gain adjustment High Light adjustment.

-All of the three mode

Let R-Gain to 192 and R, G, B-Cut to 64 and then control G, B gain adjustment High Light adjustment.

-With volume button (+/-) you can adjust.

-After all adjustment finished, with Enter (■ key) turn to Ez-Adjust mode. Then with ADJ button, exit from adjustment mode

Attachment: White Balance adjustment coordination and color temperature.

OUsing CS-1000 Equipment.

-COOL : T=11000K, uv=0.000, x=0.276 y=0.283

-MEDIUM : T=9300K, uv=0.000, x=0.285 y=0.293

-WARM : T=6500K, uv=0.000, x=0.313 y=0.329

5.4 Test of RS-232C control.

Press In-Start button of Service Remocon then set the “4.Baud Rate” to 115200. Then check RS-232C control and

5.5 Selection of Country option.

Selection of country option is allowed only North American model (Not allowed Korean model). It is selection of Country about Rating and Time Zone.

•Models: All models which use LA75A Chassis (See the first page.)

•Press “In-Start” button of Service Remocon, then enter the “Option” Menu with “PIP CH-“Button

•Select one of these three (USA, CANADA, MEXICO) defends on its market using “Vol. +/-“button.

6.GND and ESD Testing

6.1 Prepare GND and ESD Testing.

• Check the connection between set and power cord

6.2 Operate GND and ESD auto-test.

•Fully connected (Between set and power cord) set enter the Auto-test sequence.

•Connect D-Jack AV jack test equipment.

•Turn on Auto-controller(GWS103-4)

•Start Auto GND test.

•If its result is NG, then notice with buzzer.

•If its result is OK, then automatically it turns to ESD Test.

•Operate ESD test

•If its result is NG, then notice with buzzer.

•If its result is OK, then process next steps. Notice it with Good lamp and STOPER Down.

6.3 Check Items.

•Test Voltage

-GND: 1.5KV/min at 100mA

-Signal: 3KV/min at 100mA

•Test time: just 1 second.

•Test point

-GND test: Test between Power cord GND and Signal cable metal GND.

-ESD test: Test between Power cord GND and Live and neutral.

•Leakage current: Set to 0.5mA(rms)

Copyright	LG Electronics. Inc. All right reserved.	- 16 -	LGE Internal Use Only
Only for training and service purposes

Block Diagram

(Front-end)			(System + DVR + Scalar)
Cable	ISDB-T/	Serial	CVBS_LIVE
	PAL/NTSC	TP1
		CVBS1/	2069_L/R_OUT1
			TP1
		SIF1

TP2

	ISDB-T/		MPEG_TS
		Serial	EXT_IN
	PAL/NTSC
		TP2
			HDMI0_BCM
	CVBS2/		SIF_LIVE
	SIF2
	(External Input)

NANDFlash	DDR2
NANDFlash	DDR2
128MB	256MB
128MB	256MB
		1080P
		LVDS
		SPDIF
		MNT_VOUT_DVR
BCM3556		MONITOR_LR+/-_OUT
BCM3556

(400M MIPS)
(400M MIPS)	I2S_BCM
	USB2.0

MNT_LOUT

AMP

AMP MNT_ROUT

Not Stuffed

					SPIF225A	HDD
MSPI	RMX				SPIF225A	HDD
BCM_SPI_CSb/				SPI BUS
BCM_SPI_MISO					BCM_SPI_MOSI/
						SCK
	TP REMUX PORT				BCM_SPI_
						(Etc)
(Analog DVR)

CVBS1		CVBS_LIVE				I2C
CVBS2		TU_CVBS_DVR			CVBS/Y_DVR			I2S_BCM
AV1				EXT_IN			Flash		NTP3100L
									NTP3100L
AV2		CVBS/Y_DVR		(Comp1/2, RGB)	TU_CVBS_DVR		Flash
	CXA2069						256KB
COMP1_LR	CXA2069				SIF_DVR		256KB
		2069_L/R_OUT1					DDR1
COMP2_LR						SAA7164
RGB_LR		2069_L/R_OUT2			2069_L/R_OUT2	SAA7164	256Mb	SIF1		SIF_LIVE
							256Mb
					MNT_VOUT_DVR			SIF2	SW	SIF_DVR
									SW
SIDE HDMI_PORT4			HDMI4		MNT_L/ROUT
			HDMI2	HDMI0_BCM		Parallel TS
				TDA9996
UI_HW_PORT1				TDA9996		CPLD
						CPLD

	UI_HW_PORT2	HDMI1
		Serial	MPEG_TS

	Copyright 2009 LG Electronics. Inc. All right reserved.	LGE Internal Use Only
	Only for training and service purposes

1. Power-Up Boot Fail Trouble Shooting

(Front-end)			(System + DVR + Scalar)
Cable	ISDB-T/	Serial	CVBS_LIVE
	PAL/NTSC	TP1
		CVBS1/	2069_L/R_OUT1
			TP1
		SIF1

TP2

	ISDB-T/		MPEG_TS
		Serial	EXT_IN
	PAL/NTSC
		TP2
			HDMI0_BCM
	CVBS2/		SIF_LIVE
	SIF2
	(External Input)

NANDFlash	DDR2
NANDFlash	DDR2
128MB	256MB
128MB	256MB
		1080P
		LVDS
		SPDIF
		MNT_VOUT_DVR
BCM3556		MONITOR_LR+/-_OUT
BCM3556

(400M MIPS)
(400M MIPS)	I2S_BCM
	USB2.0

MNT_LOUT

AMP

AMP MNT_ROUT

Not Stuffed

					SPIF225A	HDD
MSPI	RMX				SPIF225A	HDD
BCM_SPI_CSb/				SPI BUS
BCM_SPI_MISO					BCM_SPI_MOSI/
						SCK
	TP REMUX PORT				BCM_SPI_
						(Etc)
(Analog DVR)

CVBS1		CVBS_LIVE				I2C
CVBS2		TU_CVBS_DVR			CVBS/Y_DVR			I2S_BCM
AV1				EXT_IN			Flash		NTP3100L
									NTP3100L
AV2		CVBS/Y_DVR		(Comp1/2, RGB)	TU_CVBS_DVR		Flash
	CXA2069						256KB
COMP1_LR	CXA2069				SIF_DVR		256KB
		2069_L/R_OUT1					DDR1
COMP2_LR						SAA7164
RGB_LR		2069_L/R_OUT2			2069_L/R_OUT2	SAA7164	256Mb	SIF1		SIF_LIVE
							256Mb
					MNT_VOUT_DVR			SIF2	SW	SIF_DVR
									SW
SIDE HDMI_PORT4			HDMI4		MNT_L/ROUT
			HDMI2	HDMI0_BCM		Parallel TS
				TDA9996
UI_HW_PORT1				TDA9996		CPLD
						CPLD

	UI_HW_PORT2	HDMI1
		Serial	MPEG_TS

	Copyright 2009 LG Electronics. Inc. All right reserved.	LGE Internal Use Only
	Only for training and service purposes

1. Power-Up Boot Fail Trouble Shooting

Check P800 All Voltage Level

(20V, 12V, 5V_ST)

Y

Check All Voltage Level

at L804/L807/L808

Y

Check Voltage Level 3.3V at L815

Y

Check Voltage Level 2.5V at L827

Y

Check Voltage Level 1.8V at IC804 #6 pin

Y

Check Voltage Level 1.2V at L803

Y

Check X201 Clock 54MHz

Y

Check signal transition at IC101 #9 pin

Y

Replace IC101 Flash Memory

N

Check Power connector

NReplace one of L804/L807/L808

&Recheck

	N	Replace one of
		IC807/IC802/L815/L823/L810/L826
		& Recheck

NReplace one of IC803/L824/L827

&Recheck

NReplace one of IC804/L825

&Recheck

	N	Replace one of
		IC809/IC800/L803/L816/L819/L801
		& Recheck

N

Replace X201

N

Maybe BCM3556 has troubles

Y

Replace Power board

N

N

Check Micom IC407 Redownload or replace

N

N

	Copyright 2009 LG Electronics. Inc. All right reserved.	LGE Internal Use Only
	Only for training and service purposes